United States Office of Water EPA-821-R-00-012

Environmental Protection (4303) June 2000

Agency

Final Development Document For

Effluent Limitations Guidelines and

Standards for the Transportation

Equipment Cleaning Category
FINAL

DEVELOPMENT DOCUMENT

FOR

EFFLUENT LIMITATIONS GUIDELINES AND STANDARDS

FOR THE

TRANSPORTATION EQUIPMENT CLEANING

POINT SOURCE CATEGORY

Carol M. Browner

Administrator

J. Charles Fox

Assistant Administrator, Office of Water

Geoff Grubbs

Director, Office of Science and Technology

Sheila E. Frace

Director, Engineering and Analysis Division

Ronald Jordan

Acting Chief, Chemicals Branch

John Tinger

Project Manager

June 2000

U.S. Environmental Protection Agency

Office of Water

Washington, DC 20460
Acknowledgments and Disclaimer

This document has been reviewed and approved for publication by the Engineering and Analysis

Division, Office of Science and Technology. This document was prepared with the support of

Eastern Research Group, Inc. (Contract No. 68-C5-0033), under the direction and review of the

Office of Science and Technology.

EPA would like to acknowledge the exceptional efforts and contributions of Eastern Research

Group, Inc. in the development of this document. ERG has provided invaluable support for the

data collection, data analysis, and engineering assessments and materials contained in this

document.

Neither the U.S. government nor any of its employees, contractors, subcontractors, or their

employees make any warranty, expressed or implied, or assume any legal liability or responsibility

for any third party’s use of, or the results of such use of, any information, apparatus, method,

product, or process discussed in this report, or represent that its use by such a third party would

not infringe on privately owned rights.
i

TABLE OF CONTENTS

Page

1.0 LEGAL AUTHORITY ................................................... 1-1

1.1 Clean Water Act (CWA) ........................................ 1-1

1.1.1 Best Practicable Control Technology Currently Available (BPT) 

(Section 304(b)(1) of the CWA) ............................. 1-1

1.1.2 Best Conventional Pollutant Control Technology (BCT) 

(Section 304(b)(4) of the CWA) ............................. 1-2

1.1.3 Best Available Technology Economically Achievable (BAT) 

(Section 304(b)(2) of the CWA) ............................. 1-2

1.1.4 New Source Performance Standards (NSPS) 

(Section 306 of the CWA) ................................. 1-3

1.1.5 Pretreatment Standards for Existing Sources (PSES) 

(Section 307(b) of the CWA) ............................... 1-3

1.1.6 Pretreatment Standards for New Sources (PSNS) 

(Section 307(b) of the CWA) ............................... 1-4

1.2 Section 304(m) Requirements ..................................... 1-4

1.3 Pollution Prevention Act ......................................... 1-4

2.0 SUMMARY AND SCOPE ................................................ 2-1

2.1 Applicability of the Regulation .................................... 2-1

2.2 Subcategorization .............................................. 2-3

2.3 Summary of Rule .............................................. 2-3

2.3.1 Best Practicable Control Technology Currently Available (BPT) ..... 2-3

2.3.2 Best Conventional Pollutant Control Technology (BCT) ........... 2-4

2.3.3 Best Available Technology Economically Achievable (BAT) ........ 2-4

2.3.4 New Source Performance Standards (NSPS) .................... 2-4

2.3.5 Pretreatment Standards for Existing Sources (PSES) ............. 2-5

2.3.6 Pretreatment Standards for New Sources (PSNS) ................ 2-5

3.0 DATA COLLECTION ACTIVITIES .......................................... 3-1

3.1 Summary of TECI Information Collected Prior to 1992 ................. 3-1

3.2 Summary of the TECI Questionnaires ............................... 3-2

3.2.1 Identification of Potential TECI Population ..................... 3-2

3.2.2 1993 Screener Questionnaire for the Transportation Equipment 

Cleaning Industry (Screener Questionnaire) ..................... 3-5

3.2.2.1 Development of the Screener Questionnaire Sample 

Frame ..................................... 3-5

3.2.2.2 Development of the Screener Questionnaire ......... 3-8

3.2.2.3 Administration of the Screener Questionnaire ........ 3-8

3.2.2.4 Calculation of National Estimates ................ 3-10

3.2.3 1994 Detailed Questionnaire for the Transportation Equipment 

Cleaning Industry (Detailed Questionnaire) .................... 3-11
TABLE OF CONTENTS (Continued)

Page

ii

3.2.3.1 Development of the Detailed Questionnaire Sample 

Frame .................................... 3-12

3.2.3.2 Development of the Detailed Questionnaire ........ 3-15

3.2.3.3 Administration of the Detailed Questionnaire ....... 3-18

3.2.3.4 Calculation of National Estimates ................ 3-20

3.3 Summary of EPA's TECI Site Visit Program from 1993 Through 1999 ..... 3-21

3.3.1 Criteria for Site Selection ................................. 3-22

3.3.2 Information Collected .................................... 3-23

3.4 Summary of EPA's TECI Sampling Program from 1994 through 1996 ..... 3-24

3.4.1 Criteria for Site Selection ................................. 3-24

3.4.2 Information Collected .................................... 3-25

3.4.3 Sample Collection and Analysis ............................. 3-26

3.5 Summary of Post-Proposal Data Collected .......................... 3-26

3.6 Existing Data Sources ......................................... 3-28

3.6.1 EPA's Risk Reduction Engineering Laboratory Treatability 

Database .............................................. 3-28

3.6.2 EPA's Fate of Priority Pollutants in Publicly Owned Treatment Works

Database .............................................. 3-29

3.6.3 State and Local Agencies ................................. 3-29

3.6.4 EPA's Permit Compliance System and Industrial Facilities Discharge

Databases ............................................. 3-30

3.6.5 U.S. Navy Bilge Wastewater Characterization Data ............. 3-30

3.7 Summary of Publicly Owned Treatment Works Data .................. 3-30

3.8 References .................................................. 3-31

4.0 INDUSTRY DESCRIPTION ............................................... 4-1

4.1 Operational Structure ........................................... 4-1

4.2 Cleaning Purpose .............................................. 4-2

4.3 TEC Operations ............................................... 4-3

4.3.1 Tank and Hopper Truck, IBC, and Intermodal Tank Container 

Cleaning ............................................... 4-5

4.3.2 Rail Tank and Hopper Car Cleaning .......................... 4-6

4.3.3 Tank and Hopper Barge and Ocean/Sea Tanker Cleaning .......... 4-6

4.3.4 Special Cleaning Processes ................................. 4-7

4.4 Tank Types Cleaned ............................................ 4-8

4.5 Cargo Types Cleaned .......................................... 4-10

4.6 Heel Removal and Disposal ..................................... 4-11

4.7 Chemical Cleaning Solutions ..................................... 4-13

4.8 Non-TEC Operations .......................................... 4-15

4.9 Geographic Profile ............................................ 4-16

4.10 References .................................................. 4-18
TABLE OF CONTENTS (Continued)

Page

iii

5.0 INDUSTRY SUBCATEGORIZATION ........................................ 5-1

5.1 Factors Considered for Basis of Subcategorization ..................... 5-2

5.1.1 Cleaning Processes (Production Processes) ..................... 5-2

5.1.2 Tank Type Cleaned ....................................... 5-4

5.1.3 Cargo Type Cleaned ...................................... 5-6

5.1.4 Water Use and Wastewater Reuse Practices .................... 5-9

5.1.5 Wastewater Characteristics ................................ 5-10

5.1.6 Facility Age ........................................... 5-12

5.1.7 Facility Size ........................................... 5-13

5.1.8 Geographical Location ................................... 5-13

5.1.9 Water Pollution Control Technologies ........................ 5-15

5.1.10 Treatment Costs ........................................ 5-15

5.1.11 Non-Water Quality Environmental Impacts .................... 5-15

5.2 Selection of Subcategorization Approach ........................... 5-16

5.3 References .................................................. 5-19

6.0 WATER USE, WASTEWATER CHARACTERIZATION, AND POLLUTANTS OF INTEREST .... 6-1

6.1 Water Use and Wastewater Generation .............................. 6-2

6.2 Sources of Wastewater .......................................... 6-5

6.3 Wastewater Discharge Practices ................................... 6-7

6.4 Water Reuse and Recycling ...................................... 6-8

6.5 Wastewater Characterization .................................... 6-10

6.6 Pollutants of Interest .......................................... 6-12

6.6.1 Truck/Chemical & Petroleum, Rail/Chemical & Petroleum, and

Barge/Chemical & Petroleum Subcategories ................... 6-14

6.6.2 Food Subcategory ....................................... 6-15

6.6.3 Truck/Hopper, Rail/Hopper, and Barge/Hopper Subcategories ..... 6-15

7.0 POLLUTION PREVENTION AND WASTEWATER TREATMENT TECHNOLOGIES ......... 7-1

7.1 Pollution Prevention Controls ..................................... 7-1

7.1.1 Use of Dedicated Tanks ................................... 7-2

7.1.2 Heel Reduction .......................................... 7-3

7.1.3 Reduction in the Amount and Toxicity of Chemical Cleaning 

Solutions ............................................... 7-6

7.2 Flow Reduction Technologies ..................................... 7-8

7.2.1 High-Pressure, Low-Volume Cleaning Equipment ................ 7-8

7.2.2 Monitoring TEC Water Use ................................ 7-9

7.2.3 Equipment Monitoring Program ............................. 7-9

7.2.4 Cleaning Without Use of Water .............................. 7-9

7.2.5 Cascade Tank Cleaning ................................... 7-10

7.2.6 Wastewater Recycle and Reuse ............................. 7-10
TABLE OF CONTENTS (Continued)

Page

iv

7.3 End-of-Pipe Wastewater Treatment Technologies ..................... 7-11

7.3.1 Gravity Settling ......................................... 7-12

7.3.2 pH Adjustment ......................................... 7-13

7.3.3 Equalization ........................................... 7-13

7.3.4 Oil/Water Separation .................................... 7-14

7.3.5 Sludge Dewatering ...................................... 7-15

7.3.5.1 Sludge Drying Bed ........................... 7-15

7.3.5.2 Plate-and-Frame Filter Press ................... 7-16

7.3.5.3 Rotary Vacuum Filter ........................ 7-16

7.3.5.4 Centrifuge ................................. 7-17

7.3.6 Dissolved Air Flotation ................................... 7-17

7.3.7 Coagulation/Flocculation ................................. 7-18

7.3.8 Filtration .............................................. 7-19

7.3.9 Clarification ........................................... 7-20

7.3.10 Biological Oxidation ..................................... 7-20

7.3.11 Chemical Precipitation/Separation ........................... 7-21

7.3.12 Grit Removal .......................................... 7-22

7.3.13 Chemical Oxidation ...................................... 7-22

7.3.14 Activated Carbon Adsorption .............................. 7-23

7.3.15 Membrane Filtration ..................................... 7-24

7.3.15.1 Microfiltration .............................. 7-25

7.3.15.2 Ultrafiltration ............................... 7-25

7.3.15.3 Reverse Osmosis ............................ 7-25

7.4 References .................................................. 7-26

8.0 DEVELOPMENT OF CONTROL AND TREATMENT OPTIONS ....................... 8-1

8.1 Introduction .................................................. 8-1

8.2 Best Practicable Control Technology Currently Available (BPT) ........... 8-3

8.2.1 BPT Options for the Truck/Chemical & Petroleum Subcategory ..... 8-4

8.2.2 BPT Options for the Rail/Chemical & Petroleum Subcategory ....... 8-6

8.2.3 BPT Options for the Barge/Chemical & Petroleum Subcategory ..... 8-8

8.2.4 BPT Options for the Food Subcategory ...................... 8-10

8.2.5 BPT Options for the Truck/Hopper, Rail/Hopper, and Barge/Hopper

Subcategories .......................................... 8-11

8.3 Best Conventional Pollutant Control Technology (BCT) ................ 8-12

8.4 Best Available Technology Economically Achievable (BAT) ............. 8-12

8.5 New Source Performance Standards (NSPS) ........................ 8-13

8.6 Pretreatment Standards for Existing Sources (PSES) .................. 8-13

8.6.1 PSES Options for the Truck/Chemical & Petroleum Subcategory ... 8-14

8.6.2 PSES Options for the Rail/Chemical & Petroleum Subcategory ..... 8-15

8.6.3 PSES Options for the Barge/Chemical & Petroleum Subcategory ... 8-17
TABLE OF CONTENTS (Continued)

Page

v

8.6.4 PSES Options for the Food Subcategory ...................... 8-18

8.6.5 PSES Options for the Truck/Hopper, Rail/Hopper, and Barge/Hopper

Subcategories .......................................... 8-19

8.6.6 Pollution Prevention Alternative ............................ 8-20

8.7 Pretreatment Standards for New Sources (PSNS) ..................... 8-21

9.0 COSTS OF TECHNOLOGY BASES FOR REGULATIONS ........................... 9-1

9.1 Development of Cost Model Inputs ................................ 9-3

9.1.1 Model Site Development ................................... 9-3

9.1.2 Supplemental Model Site Development ........................ 9-4

9.1.3 Pollutant Control Technology Development .................... 9-6

9.1.4 Model Sites with Production in Multiple Subcategories ............ 9-7

9.2 Costing Methodology ........................................... 9-8

9.2.1 Wastewater Streams Costed ................................ 9-9

9.2.2 Influent Pollutant Concentrations ........................... 9-10

9.2.3 Cost Model Development ................................. 9-10

9.2.4 Components of Compliance Costs ........................... 9-12

9.2.4.1 Capital Costs ............................... 9-12

9.2.4.2 Annual Costs ............................... 9-15

9.2.5 Treatment-in-Place Credit ................................. 9-16

9.2.6 Calculation of Baseline Parameters .......................... 9-18

9.2.7 Good Water Conservation Practices and Flow Reduction ......... 9-19

9.2.7.1 Flow Reduction Control Technologies ............ 9-20

9.2.7.2 Development of Target Flows .................. 9-22

9.2.8 Contract Haul in Lieu of Treatment .......................... 9-23

9.2.9 Costing Methodology for Direct Dischargers in the Barge/Chemical &

Petroleum Subcategory ................................... 9-23

9.3 Design and Cost Elements for Pollutant Control Technologies ........... 9-24

9.3.1 Cost Model Components .................................. 9-24

9.3.2 Flow Reduction ........................................ 9-26

9.3.3 Equalization ........................................... 9-28

9.3.4 Oil/Water Separation (Vertical Tube Coalescing) ............... 9-29

9.3.5 Oil/Water Separation (American Petroleum Institute 

[API] Separator) ........................................ 9-31

9.3.6 Oil/Water Separation (Gravity) ............................. 9-32

9.3.7 Gravity Separation ...................................... 9-34

9.3.8 Chemical Oxidation, Neutralization, Coagulation, and Clarification . . 9-35

9.3.9 DAF (with pH Adjustment and Chemical Addition) .............. 9-36

9.3.10 DAF (without Chemical Addition) .......................... 9-39

9.3.11 Filter Press (for Wastewater Clarification and Biological Treatment Sludge

Dewatering) ........................................... 9-40
TABLE OF CONTENTS (Continued)

Page

vi

9.3.12 Biological Treatment ..................................... 9-41

9.3.13 Biological Treatment with Extended Aeration and/or Polymer-Assisted

Clarification ........................................... 9-42

9.3.14 Activated Carbon Adsorption (Vessels) ....................... 9-44

9.3.15 Organo-Clay/Activated Carbon Adsorption .................... 9-45

9.3.16 Reverse Osmosis ........................................ 9-46

9.3.17 Sludge Dewatering (Plate-and-Frame Filter Press) ............... 9-47

9.3.18 Contract Hauling of Wastewater in Lieu of Treatment ............ 9-49

9.3.19 Compliance Monitoring ................................... 9-49

9.3.20 Waste Hauling ......................................... 9-50

9.4 Summary of Costs by Regulatory Option ........................... 9-50

9.5 References .................................................. 9-51

10.0 POLLUTANT REDUCTION ESTIMATES ..................................... 10-1

10.1 Methodology Used to Identify Pollutants Included in the Load Removal 

Estimates ................................................... 10-2

10.2 General Methodology Used to Calculate Pollutant Loadings and Pollutant

Reductions .................................................. 10-3

10.3 General Methodology Used to Estimate Untreated Pollutant Loadings ..... 10-5

10.4 Multiple Subcategory Facility PNPLs .............................. 10-9

10.5 TECI Untreated Pollutant Loadings ............................... 10-9

10.6 TECI Baseline Pollutant Loadings ............................... 10-10

10.7 TECI Post-Compliance Pollutant Loadings by Regulatory Option ........ 10-10

10.8 TECI Pollutant Loading Reduction Estimates ....................... 10-11

10.8.1 BPT ................................................ 10-11

10.8.2 BCT ................................................ 10-12

10.8.3 BAT ................................................ 10-12

10.8.4 PSES ............................................... 10-13

10.9 References ................................................. 10-14

11.0 NON-WATER QUALITY ENVIRONMENTAL IMPACTS .......................... 11-1

11.1 Energy Impacts .............................................. 11-1

11.2 Air Emission Impacts .......................................... 11-2

11.3 Solid Waste Impacts ........................................... 11-4

11.3.1 Wastewater Treatment Sludge ............................. 11-4

11.3.2 Waste Oil ............................................. 11-5

11.4 References .................................................. 11-6

12.0 OPTION SELECTION AND REGULATED POLLUTANTS .......................... 12-1

12.1 Option Selection for Direct Dischargers ............................ 12-2

12.1.1 Truck/Chemical & Petroleum .............................. 12-2
TABLE OF CONTENTS (Continued)

Page

vii

12.1.2 Rail/Chemical & Petroleum ................................ 12-3

12.1.3 Barge/Chemical & Petroleum .............................. 12-5

12.1.4 Food ................................................ 12-6

12.1.5 Truck/Hopper and Rail/Hopper ............................. 12-7

12.1.6 Barge/Hopper .......................................... 12-7

12.2 Indirect Discharging Options .................................... 12-8

12.2.1 Truck/Chemical & Petroleum .............................. 12-8

12.2.2 Rail/Chemical & Petroleum ............................... 12-10

12.2.3 Barge/Chemical & Petroleum ............................. 12-11

12.2.4 Food ................................................ 12-13

12.2.5 Truck/Hopper, Rail/Hopper, and Barge/Hopper ............... 12-13

12.3 Rationale for Selecting Regulated Pollutants ........................ 12-14

12.4 Regulated Pollutants for Direct Dischargers ........................ 12-16

12.4.1 Truck/Chemical & Petroleum ............................. 12-17

12.4.2 Rail/Chemical & Petroleum ............................... 12-18

12.4.3 Barge/Chemical & Petroleum ............................. 12-19

12.4.4 Food ................................................ 12-20

12.5 Regulated Pollutants for Indirect Dischargers ....................... 12-20

12.5.1 Truck/Chemical & Petroleum ............................. 12-23

12.5.2 Rail/Chemical & Petroleum ............................... 12-23

12.5.3 Barge/Chemical & Petroleum ............................. 12-23

12.6 References ................................................. 12-23

13.0 IMPLEMENTATION OF EFFLUENT LIMITATIONS GUIDELINES AND STANDARDS ...... 13-1

13.1 Facilities Excluded from the TECI Regulation ....................... 13-2

13.1.1 Low Flow Exclusion - Unregulated Wastewater ................ 13-2

13.1.2 Manufacturing Facility Covered by Another Point Source Category . 13-3

13.1.3 Manufacturing Facility Not Covered by Another Point Source

Category .............................................. 13-4

13.1.4 Facility That Cleans Tanks and IBCs ......................... 13-5

13.2 Numerical Effluent Limitations ................................... 13-6

13.2.1 Single Subcategory Facility ................................ 13-6

13.2.2 Multiple Subcategory Facility .............................. 13-7

13.2.3 Regulated and Unregulated Wastewater at a Facility ............. 13-9

13.3 Pollutant Management Plan .................................... 13-11

14.0 ANALYTICAL METHODS .............................................. 14-1

14.1 Semivolatile Organic Compounds ................................. 14-2

14.2 Metals ..................................................... 14-3

14.3 Hexane Extractable Material and Silica-Gel Treated Hexane 

Extractable Material ........................................... 14-3
TABLE OF CONTENTS (Continued)

Page

viii

14.4 Biochemical Oxygen Demand .................................... 14-3

14.5 Total Suspended Solids ........................................ 14-4

14.6 References .................................................. 14-4

15.0 GLOSSARY ........................................................ 15-1
ix

LIST OF TABLES

Page

2-1 Subcategorization for the Transportation Equipment Cleaning Industry ..... 2-6

2-2 Summary of Rules for the Transportation Equipment Cleaning Industry Point

Source Category ............................................... 2-7

2-3 Summary of Technology Basis for BPT, BCT, BAT, and NSPS ........... 2-8

2-4 Truck/Chemical & Petroleum Subcategory: BPT, BCT, BAT, and NSPS

Concentration-Based Limitations for Discharges to Surface Waters ........ 2-9

2-5 Rail/Chemical & Petroleum Subcategory: BPT, BCT, BAT, and NSPS

Concentration-Based Limitations for Discharges to Surface Waters ....... 2-10

2-6 Barge/Chemical & Petroleum Subcategory: BPT, BCT, BAT, and NSPS

Concentration-Based Limitations for Discharges to Surface Waters ....... 2-11

2-7 Food Subcategory: BPT, BCT, and NSPS Concentration-Based 

Limitations for Discharges to Surface Waters ........................ 2-12

2-8 Summary of Technology Basis for PSES and PSNS ................... 2-13

2-9 Truck/Chemical & Petroleum Subcategory: PSES and PSNS 

Concentration-Based Limitations for Discharges to POTWs ............. 2-14

2-10 Rail/Chemical & Petroleum Subcategory: PSES and PSNS ConcentrationBased Limitations for Discharges to POTWs ........................ 2-15

2-11 Barge/Chemical & Petroleum Subcategory: PSES and PSNS ConcentrationBased Limitations for Discharges to POTWs ........................ 2-16

3-1 Major Sources Used to Identify Potential TEC Facilities by

Tank Type and Business Operational Structure ....................... 3-33

3-2 Sources Used to Identify Potential TEC Facilities ..................... 3-34

3-3 Original Screener Questionnaire Sample Frame and Distribution of 

Facilities in the TECI Screener Questionnaire Mailing List by Facility 

Type and Level of Assurance .................................... 3-37

3-4 Summary of TECI Screener Questionnaire Mail-Out and 

Follow-Up Activities .......................................... 3-38
LIST OF TABLES (Continued)

Page

x

3-5 Final Screener Questionnaire Sample Frame Strata and Total Population 

Estimates ................................................... 3-39

3-6 Detailed Questionnaire Sample Frame and Distribution of Facilities in 

the TECI Detailed Questionnaire Mailing List by Strata ................ 3-40

3-7 Summary of TECI Detailed Questionnaire Mail-Out and Follow-Up 

Activities ................................................... 3-41

3-8 Detailed Questionnaire Sample Frame Strata and Weights .............. 3-42

4-1 Number of Tanks Cleaned by Cargo Type – Discharging and Zero 

Discharge Facilities ............................................ 4-19

4-2 Distribution of Facilities That Clean a Single Cargo Type – Discharging 

and Zero Discharge Facilities .................................... 4-20

4-3 Average Volume of Heel Removed per Tank Cleaning by Cargo Group 

and Tank Type – Discharging and Zero Discharge Facilities ............. 4-21

4-4 Total Volume of Heel Discharged/Disposed by Cargo Group and

Discharge/Disposal Method – Discharging and Zero Discharge Facilities ... 4-22

6-1 Estimates of Total Annual Volume of Wastewater Generated 

by Facility Type – Discharging Facilities Only ........................ 6-17

6-2 Average Volume of Interior Cleaning Wastewater Generated per Tank 

Cleaning by Cargo Group and Tank Type – Discharging Facilities Only .... 6-18

6-3 Average Volume of Wastewater Generated per Facility per Day by 

Wastewater Stream Type and Facility Type – Discharging Facilities Only ... 6-19

6-4 Total Volume of Wastewater Generated per Day by Wastewater Stream 

Type and Facility Type – Discharging Facilities Only .................. 6-20

6-5 Discharge Status by Facility Type ................................. 6-21

6-6 Estimates of Total Annual Volume of Wastewater Discharged

By Facility Type and Discharge Status ............................. 6-22

6-7 Number of Facilities That Reuse All or Part of TEC Wastewater as 

Source Water for TEC Operations ................................ 6-23
LIST OF TABLES (Continued)

Page

xi

6-8 Priority Pollutant List (a) ....................................... 6-24

6-9 Summary of Raw Wastewater Characterization Data for Truck/Chemical 

Facilities .................................................... 6-25

6-10 Summary of Raw Wastewater Characterization Data for Rail/Chemical 

Facilities .................................................... 6-34

6-11 Summary of Raw Wastewater Characterization Data for Barge/Chemical &

Petroleum Facilities ........................................... 6-42

6-12 Summary of Raw Wastewater Characterization Data for Truck/Food 

Facilities .................................................... 6-49

6-13 Summary of Raw Wastewater Characterization Data for Rail/Food 

Facilities .................................................... 6-53

6-14 Summary of Raw Wastewater Characterization Data for Barge/Food 

Facilities .................................................... 6-56

6-15 Summary of Raw Wastewater Characterization Data for Truck/Petroleum

Facilities .................................................... 6-60

6-16 Summary of Raw Wastewater Characterization Data for Barge/Hopper 

Facilities .................................................... 6-64

6-17 Summaries of the Raw Wastewater Characterization Data 

for Each Facility Type ......................................... 6-67

6-18 Pollutants Of Interest By Subcategory ............................. 6-68

9-1 Number of Costed Technology Options for Each TECI Subcategory ...... 9-55

9-2 Direct Capital Costs Used by the TECI Cost Model ................... 9-56

9-3 Components of Total Capital Investment ........................... 9-62

9-4 Operation and Maintenance Unit Costs Used by the TECI Cost Model ..... 9-63

9-5 Target Wastewater Flow by Facility Type ........................... 9-67

9-6 Cost Summary of Regulatory Options for BPT/BAT/BCT (a) ............ 9-68
LIST OF TABLES (Continued)

Page

xii

9-7 Cost Summary of Regulatory Options for PSES (a) ................... 9-69

10-1 Truck/Chemical & Petroleum Subcategory – Direct Dischargers

Summary of Pollutant Loadings and Reductions by Technology 

Option (a) .................................................. 10-15

10-2 Rail/Chemical & Petroleum Subcategory – Direct Dischargers

Summary of Pollutant Loadings and Reductions by Technology 

Option (a) .................................................. 10-20

10-3 Barge/Chemical & Petroleum Subcategory – Direct Dischargers

Summary of Pollutant Loadings and Reductions by Technology 

Option (a) .................................................. 10-25

10-4 Barge/Hopper Subcategory – Direct Dischargers

Summary of Pollutant Loadings and Reductions by Technology 

Option (a) .................................................. 10-26

10-5 Truck/Chemical & Petroleum Subcategory – Indirect Dischargers

Summary of Pollutant Loadings and Reductions by Technology 

Option (a) .................................................. 10-27

10-6 Rail/Chemical & Petroleum Subcategory – Indirect Dischargers

Summary of Pollutant Loadings and Reductions by Technology 

Option (a) .................................................. 10-32

10-7 Food Subcategory – Indirect Dischargers

Summary of Pollutant Loadings and Reductions by Technology 

Option (a) .................................................. 10-37

10-8 Truck/Hopper Subcategory – Indirect Dischargers

Summary of Pollutant Loadings and Reductions by Technology 

Option (a) .................................................. 10-38

10-9 Rail/Hopper Subcategory – Indirect Dischargers

Summary of Pollutant Loadings and Reductions by Technology 

Option (a) .................................................. 10-39

10-10 Barge/Hopper Subcategory – Indirect Dischargers

Summary of Pollutant Loadings and Reductions by Technology 

Option (a) .................................................. 10-40
LIST OF TABLES (Continued)

Page

xiii

10-11 BPT Pollutant Loading Reductions ............................... 10-41

10-12 PSES Pollutant Loading Reductions .............................. 10-42

12-1 Pass-Through Analysis for the Truck/Chemical & Petroleum 

Subcategory ................................................ 12-25

12-2 Pass-Through Analysis for the Rail/Chemical & Petroleum Subcategory ... 12-25

12-3 Pass-Through Analysis for the Barge/Chemical & Petroleum 

Subcategory ................................................ 12-25
xiv

LIST OF FIGURES

Page

4-1 Diagram of General TEC Operations .............................. 4-23

4-2 Distribution of TEC Facilities by Number of Cargo Types Cleaned – 

Discharging and Zero Discharge Facilities ........................... 4-24

4-3 Geographic Profile of Discharging and Zero Discharge Facilities in the 

TECI Detailed Questionnaire Sample Population ..................... 4-25

4-4 Geographic Profile of Discharging and Zero Discharge Truck Facilities 

in the TECI Detailed Questionnaire Sample Population ................. 4-26

4-5 Geographic Profile of Discharging and Zero Discharge Rail Facilities 

in the TECI Detailed Questionnaire Sample Population ................. 4-27

4-6 Geographic Profile of Discharging and Zero Discharge Barge Facilities 

in the TECI Detailed Questionnaire Sample Population ................. 4-28

4-7 Geographic Profile of Discharging and Zero Discharge Facilities in the TECI

Detailed Questionnaire Sample Population that Clean Chemical Cargos .... 4-29

4-8 Geographic Profile of Discharging and Zero Discharge Facilities in the TECI

Detailed Questionnaire Sample Population that Clean Food Grade Cargos . . 4-30

4-9 Geographic Profile of Discharging and Zero Discharge Facilities in the TECI

Detailed Questionnaire Sample Population that Clean Petroleum Cargos .... 4-31

6-1 Water Use Diagram for TEC Operations ........................... 6-75

7-1 API Oil/Water Separator ....................................... 7-27

7-2 Coalescing Oil/Water Separator .................................. 7-28

7-3 Plate-and-Frame Filter Press ..................................... 7-29

7-4 Rotary Vacuum Filter .......................................... 7-30

7-5 Dissolved Air Flotation Unit with Pressurized Recycle ................. 7-31

7-6 Clarifier .................................................... 7-32

7-7 Activated Sludge System ....................................... 7-33
LIST OF FIGURES (Continued)

Page

xv

7-8 Batch Chemical Precipitation Unit ................................ 7-34

7-9 Membrane Filtration Unit ....................................... 7-35
Section 1.0 - Legal Authority

In the initial stages of EPA CWA regulation, EPA efforts emphasized the achievement of BPT limitations for control of 1

the “classical” pollutants (e.g., TSS, pH, BOD5). However, nothing on the face of the statute explicitly restricted BPT

limitation to such pollutants. Following passage of the Clean Water Act of 1977 with its requirement for points sources

to achieve best available technology limitations to control discharges of toxic pollutants, EPA shifted its focus to address

the listed priority pollutants under the guidelines program. BPT guidelines continue to include limitations to address all

pollutants.

1-1

1.0 LEGAL AUTHORITY

Effluent limitations guidelines and standards for the Transportation Equipment

Cleaning Industry (TECI) are being promulgated under the authority of Sections 301, 304, 306,

307, 308, and 501 of the Clean Water Act, 33 U.S.C. 1311, 1314, 1316, 1317, 1318, and 1361.

1.1 Clean Water Act (CWA)

The Federal Water Pollution Control Act Amendments of 1972 established a

comprehensive program to “restore and maintain the chemical, physical, and biological integrity of

the Nation’s waters” (Section 101(a)). To implement the Act, the United States Environmental

Protection Agency (EPA) is to issue effluent limitations guidelines, pretreatment standards, and

new source performance standards for industrial dischargers. These guidelines and standards are

summarized briefly in the following sections.

1.1.1 Best Practicable Control Technology Currently Available (BPT)

(Section 304(b)(1) of the CWA)

In the guidelines for an industry category, EPA defines BPT effluent limits for

conventional, priority, and nonconventional pollutants. In specifying BPT, EPA looks at a 1

number of factors. EPA first considers the cost of achieving effluent reductions in relation to the

effluent reduction benefits. The Agency also considers: the age of the equipment and facilities;

the processes employed and any required process changes; engineering aspects of the control

technologies; non-water quality environmental impacts (including energy requirements); and such

other factors as the Agency deems appropriate (CWA 304(b)(1)(B)). Traditionally, EPA

establishes BPT effluent limitations based on the average of the best performances of facilities
Section 1.0 - Legal Authority

1-2

within the industry of various ages, sizes, processes, or other common characteristics. Where,

however, existing performance is uniformly inadequate, EPA may require higher levels of control

than currently in place in an industrial category if the Agency determines that the technology can

be practically applied.

1.1.2 Best Conventional Pollutant Control Technology (BCT) (Section 304(b)(4) of

the CWA)

The 1977 amendments to the CWA required EPA to identify effluent reduction

levels for conventional pollutants associated with BCT technology for discharges from existing

industrial point sources. In addition to other factors specified in Section 304(b)(4)(B), the CWA

requires that EPA establish BCT limitations after consideration of a two part “costreasonableness” test. EPA explained its methodology for the development of BCT limitations in

July 1986 (51 FR 24974).

Section 304(a)(4) designates the following as conventional pollutants: biochemical

oxygen demand (BOD ), total suspended solids (TSS), fecal coliform, pH, and any additional 5

pollutants defined by the Administrator as conventional. The Administrator designated oil and

grease as an additional conventional pollutant on July 30, 1979 (44 FR 44501).

1.1.3 Best Available Technology Economically Achievable (BAT)

(Section 304(b)(2) of the CWA)

In general, BAT effluent limitations guidelines represent the best economically

achievable performance of plants in the industrial subcategory or category. The factors

considered in assessing BAT include the cost of achieving BAT effluent reductions, the age of

equipment and facilities involved, the process employed, potential process changes, and non-water

quality environmental impacts, including energy requirements. The Agency retains considerable

discretion in assigning the weight to be accorded these factors. BAT limitations may be based on

effluent reductions attainable through changes in a facility's processes and operations. As with
Section 1.0 - Legal Authority

1-3

BPT, where existing performance is uniformly inadequate, BAT may require a higher level of

performance than is currently being achieved based on technology transferred from a different

subcategory or category. BAT may be based upon process changes or internal controls, even

when these technologies are not common industry practice.

1.1.4 New Source Performance Standards (NSPS) (Section 306 of the CWA)

NSPS reflect effluent reductions that are achievable based on the best available

demonstrated control technology. New facilities have the opportunity to install the best and most

efficient production processes and wastewater treatment technologies. As a result, NSPS should

represent the most stringent controls attainable through the application of the best available

control technology for all pollutants (i.e., conventional, nonconventional, and priority pollutants). 

In establishing NSPS, EPA is directed to take into consideration the cost of achieving the effluent

reduction and any non-water quality environmental impacts and energy requirements.

1.1.5 Pretreatment Standards for Existing Sources (PSES) (Section 307(b) of the

CWA)

PSES are designed to prevent the discharge of pollutants that pass through,

interfere with, or are otherwise incompatible with the operation of publicly-owned treatment

works (POTWs). The CWA authorizes EPA to establish pretreatment standards for pollutants

that pass through POTWs or interfere with treatment processes or sludge disposal methods at

POTWs. Pretreatment standards are technology-based and analogous to BAT effluent limitations

guidelines.

The General Pretreatment Regulations, which set forth the framework for the

implementation of categorical pretreatment standards, are found at 40 CFR Part 403. Those

regulations contain a definition of pass-through that addresses localized rather than national

instances of pass-through and establish pretreatment standards that apply to all nondomestic

dischargers (see 52 FR 1586, January 14, 1987).
Section 1.0 - Legal Authority

1-4

1.1.6 Pretreatment Standards for New Sources (PSNS) (Section 307(b) of the

CWA)

Like PSES, PSNS are designed to prevent the discharges of pollutants that pass

through, interfere with, or are otherwise incompatible with the operation of POTWs. PSNS are

to be issued at the same time as NSPS. New indirect dischargers have the opportunity to

incorporate into their plants the best available demonstrated technologies. The Agency considers

the same factors in promulgating PSNS as it considers in promulgating NSPS.

1.2 Section 304(m) Requirements

Section 304(m) of the CWA, added by the Water Quality Act of 1987, requires

EPA to establish schedules for (1) reviewing and revising existing effluent limitations guidelines

and standards (“effluent guidelines”) and (2) promulgating new effluent guidelines. On January 2,

1990, EPA published an Effluent Guidelines Plan (55 FR 80) that established schedules for

developing new and revised effluent guidelines for several industry categories. One of the

industries for which the Agency established a schedule was the TECI.

In 1992, EPA entered into a Consent Decree requiring proposal and final agency

action of effluent limitations guidelines and standards final rule for the TECI (NRDC vs. Browner

D.D.C. 89-2980). In December of 1997, the Plaintiffs and EPA agreed to modify the deadlines

for proposal to May 15, 1998 and a deadline of June 15, 2000 for final action.

1.3 Pollution Prevention Act

In the Pollution Prevention Act (PPA) of 1990 (42 U.S.C. 13101 et seq., Pub.

Law 101-508, November 5, 1990), Congress declared pollution prevention a national policy of

the United States. The PPA declares that pollution should be prevented or reduced at the source

whenever feasible; pollution that cannot be prevented should be recycled in an environmentally

safe manner whenever feasible; pollution that cannot be prevented or recycled should be treated;
Section 1.0 - Legal Authority

1-5

and disposal or other release into the environment should be chosen only as a last resort and

should be conducted in an environmentally safe manner. The PPA directs EPA to, among other

things, “review regulations of the Agency prior and subsequent to their proposal to determine

their effect on source reduction” (Sec. 6604; 42 U.S.C. 13103(b)(2)). This regulation for the

TECI was reviewed for its incorporation of pollution prevention as part of the Agency effort.
Section 2.0 - Summary and Scope

2-1

2.0 SUMMARY AND SCOPE

The final regulations for the Transportation Equipment Cleaning Industry (TECI)

include effluent limitations guidelines and standards for the control of pollutants in wastewater. 

This document presents the information and rationale supporting the final effluent limitations

guidelines and standards. Section 2.0 highlights the applicability, subcategorization, and

technology bases of the final rule.

2.1 Applicability of the Regulation

Transportation equipment cleaning (TEC) facilities are defined as those facilities

that generate wastewater from cleaning the interior of tank trucks, closed-top hopper trucks, rail

tank cars, closed-top hopper rail cars, intermodal tank containers, tank barges, closed-top hopper

barges, and ocean/sea tankers used to transport materials or cargos that come into direct contact

with the tank or container interior. Facilities that do not engage in cleaning the interior of tanks

are not within the scope of this rule.

The wastewater flows covered by the final rule include all washwaters that have

come into direct contact with the tank or container interior including prerinse cleaning solutions,

chemical cleaning solutions, and final rinse solutions. Additionally, the rule covers wastewater

generated from washing vehicle exteriors, equipment and floor washings, and TEC-contaminated

stormwater for those facilities covered by the guidelines. These wastewater streams are defined

as TEC process wastewater.

The TEC rule includes a low flow exclusion that applies to any facility that

discharges less than 100,000 gallons per year of TEC process wastewater. Facilities discharging

less than 100,000 gallons per year of TEC process wastewater will remain subject to limitations

and standards established on a case-by-case basis using Best Professional Judgement by the

permitting authority.
Section 2.0 - Summary and Scope

2-2

The focus of this rule is on TEC facilities that function independently of other

industrial activities that generate wastewater. The final TEC limitations do not apply to

wastewaters associated with tank cleanings operated in conjunction with other industrial, 

commercial, or publicly-owned treatment works (POTW) operations so long as the facility only

cleans tanks that have contained raw materials, by-products and finished products that are

associated with the facility’s on-site processes. (On-site means the contiguous and noncontiguous property within the established boundaries of the facility.)

Facilities that clean tank interiors solely for purposes of shipping products (i.e.,

cleaned for purposes other than maintenance and repair) would be regulated solely under the TEC

guideline. On the other hand, wastewater generated from cleaning tank interiors for the purposes

of maintenance and repair on the tank is not considered TEC process wastewater. It is possible

that some facilities or wastewater generated from some unit operations at these facilities will be

subject to the Metals Products & Machinery (MP&M) effluent guidelines currently being

developed by EPA. Facilities that clean tank interiors solely for the purposes of repair and

maintenance would not be regulated under the TEC guideline. If a facility discharges wastewater

from MP&M activities that are subject to the MP&M guideline and also discharges wastewater

from cleaning tanks for purposes other than repair and maintenance of those tanks, then that

facility may be subject to both guidelines.

If a facility generates TEC process wastewater, but also accepts wastewater

generated off site, then that facility may be subject to either the TEC rule or the Centralized

Waste Treatment rule, depending on the nature of the off-site wastewater. If the off-site

wastewater is solely TEC process wastewater, then the facility would be regulated solely under

the TEC rule. If the off-site wastewater is non-TEC process wastewater, or a combination of

TEC and non-TEC process wastewater, then the facility may be considered a Centralized Waste

Treatment facility and may be subject to the standards established in 40 CFR 437.
Section 2.0 - Summary and Scope

2-3

EPA has identified an estimated population of 1,239 TEC facilities that are not

already covered by other CWA effluent guidelines. EPA estimates that 341 facilities will be

affected by this rule.

2.2 Subcategorization

EPA has subcategorized the TEC point source category into 7 subcategories based

on types of cargos carried and transportation mode. The subcategories are listed below and are

described in Table 2-1 at the end of this section.

C Truck/Chemical & Petroleum;

C Rail/Chemical & Petroleum;

C Barge/Chemical & Petroleum;

C Food;

C Truck/Hopper;

C Rail/Hopper; and

C Barge/Hopper.

2.3 Summary of Rule

The components of the final rules applicable to each subcategory of the TECI are

shown in Table 2-2 and are described in the following subsections.

2.3.1 Best Practicable Control Technology Currently Available (BPT)

EPA has promulgated BPT for the three chemical and petroleum subcategories of

the TECI to control priority, nonconventional, and conventional pollutants in wastewater from

direct dischargers. EPA is also promulgating BPT for the Food Subcategory of the TECI to

control conventional pollutants in wastewater from direct dischargers. The specific pollutants

controlled vary for each subcategory. Table 2-3 summarizes the technology basis for BPT for

each regulated subcategory. Tables 2-4 through 2-7 present the effluent limitations guidelines for

each regulated subcategory.
Section 2.0 - Summary and Scope

2-4

2.3.2 Best Conventional Pollutant Control Technology (BCT)

EPA is promulgating BCT equivalent to BPT for the three chemical and petroleum

subcategories and the Food Subcategory of the TECI to control conventional pollutants in

wastewater from direct dischargers. Table 2-3 summarizes the technology basis for BCT for each

regulated subcategory. Tables 2-4 through 2-7 present the effluent limitations guidelines for each

regulated subcategory.

2.3.3 Best Available Technology Economically Achievable (BAT)

EPA is promulgating BAT equivalent to BPT for the three chemical and petroleum

subcategories of the TECI to control priority and nonconventional pollutants in wastewater from

direct dischargers. EPA is not promulgating BAT for the Food Subcategory because EPA is not

regulating any priority pollutants in these subcategories. The specific pollutants controlled vary

for each subcategory. Table 2-3 summarizes the technology basis for BAT for each regulated

subcategory. Tables 2-4 through 2-6 present the effluent limitations guidelines for each regulated

subcategory.

2.3.4 New Source Performance Standards (NSPS)

EPA is promulgating NSPS for the three chemical and petroleum subcategories of

the TECI to control priority, nonconventional, and conventional pollutants in wastewater from

new direct dischargers. EPA is also promulgating NSPS for the Food Subcategory of the TECI

to control conventional pollutants in wastewater from new direct dischargers. The specific

pollutants controlled vary for each subcategory. Table 2-3 summarizes the technology basis for

NSPS for each regulated subcategory. Tables 2-4 through 2-7 present the effluent limitations

guidelines for each regulated subcategory.
Section 2.0 - Summary and Scope

2-5

2.3.5 Pretreatment Standards for Existing Sources (PSES)

EPA is promulgating PSES for the three chemical and petroleum subcategories of

the TECI to control priority and nonconventional pollutants in wastewater from indirect

dischargers. The specific pollutants controlled vary for each subcategory. Table 2-8 summarizes

the technology basis for PSES for each regulated subcategory. Tables 2-9 through 2-11 present

the pretreatment standards for each regulated subcategory for discharges to POTWs.

EPA is also promulgating an enforceable pollution prevention alternative, referred

to as the Pollutant Management plan. The requirements of the Pollutant Management Plan are

specified in 40 CFR Part 442 and described in section 8.6.6 of this document.

2.3.6 Pretreatment Standards for New Sources (PSNS)

EPA is promulgating PSNS for the three chemical and petroleum subcategories of

the TECI to control priority and nonconventional pollutants in wastewater from new indirect

dischargers. The specific pollutants controlled vary for each subcategory. Table 2-8 summarizes

the technology basis for PSNS for each regulated subcategory. Tables 2-9 through 2-11 present

the pretreatment standards for each regulated subcategory for discharges to POTWs.

EPA is also promulgating an enforceable pollution prevention alternative, referred

to as the Pollutant Management Plan. The requirements of the Pollutant Management Plan are

specified in 40 CFR Part 442 and described in Section 8.6.6 of this document.
Section 2.0 - Summary and Scope

2-6

Table 2-1

Subcategorization for the Transportation Equipment Cleaning Industry

Subcategory Subcategory Description

Truck/Chemical & TEC facilities that clean tank trucks and intermodal tank containers that

Petroleum contained chemical and/or petroleum cargos.

Rail/Chemical & TEC facilities that clean rail tank cars that contained chemical and/or petroleum

Petroleum cargos.

Barge/Chemical & TEC facilities that clean tank barges or ocean/sea tankers that contained

Petroleum chemical and/or petroleum cargos.

Food TEC facilities that clean tank trucks, intermodal tank containers, rail tank cars,

tank barges, or ocean/sea tankers that contained food grade cargos.

Truck/Hopper TEC facilities that clean closed-top hopper trucks.

Rail/Hopper TEC facilities that clean closed-top hopper rail cars.

Barge/Hopper TEC facilities that clean closed-top hopper barges.
Section 2.0 - Summary and Scope

2-7

Table 2-2

Summary of Rules for the Transportation Equipment Cleaning Industry Point

Source Category

Subcategory PSES BPT BAT BCT PSNS NSPS

Truck/Chemical & T T T T T T

Petroleum

Rail/Chemical & T T T T T T

Petroleum

Barge/Chemical & T T T T T T

Petroleum

Food T T T

Truck/Hopper No regulations

Rail/Hopper

Barge/Hopper
Section 2.0 - Summary and Scope

2-8

Table 2-3

Summary of Technology Basis for BPT, BCT, BAT, and NSPS

Subcategory Technology Basis

Truck/Chemical BPT Equalization; Oil/water separation; Turn-key treatment system including

& Petroleum BCT chemical oxidation, neutralization, coagulation, and clarification;

BAT Biological treatment; Activated carbon adsorption; and Sludge

NSPS dewatering.

Rail/Chemical & BPT Oil/water separation; Equalizaton; Dissolved air flotation; Biological

Petroleum BCT treatment; and Sludge dewatering.

BAT

NSPS

Barge/Chemical BPT Oil/water separation; Dissolved air flotation; Filter press; Biological

& Petroleum BCT treatment; and Sludge dewatering.

BAT

NSPS

Food BPT Oil/water separation; Equalization; Biological treatment; and Sludge

BCT dewatering.

NSPS
Section 2.0 - Summary and Scope

2-9

Table 2-4

Truck/Chemical & Petroleum Subcategory: BPT, BCT, BAT, and NSPS

Concentration-Based Limitations for Discharges to Surface Waters

Pollutant or 

Pollutant Daily Monthly Daily Monthly Daily Monthly Daily Monthly

Property Maximum Average Maximum Average Maximum Average Maximum Average

[mg/L]

BPT BCT BAT NSPS

BOD5 (a) 61 22 61 22 NA NA 61 22

TSS (b) 58 26 58 26 NA NA 58 26

Oil and Grease 36 16 36 16 36 16 36 16

(HEM) (c)

pH Within 6 to 9 at all times. NA NA Within 6 to 9 at all times.

Copper 0.84 NA NA NA 0.84 NA 0.84 NA

Mercury 0.0031 NA NA NA 0.0031 NA 0.0031 NA

(a) BOD - Biochemical oxygen demand (5-day). 5

(b) TSS - Total suspended solids.

(c) HEM - Hexane extractable material.

NA - Not applicable.
Section 2.0 - Summary and Scope

2-10

Table 2-5

Rail/Chemical & Petroleum Subcategory: BPT, BCT, BAT, and NSPS

Concentration-Based Limitations for Discharges to Surface Waters

Pollutant or

Pollutant Daily Monthly Daily Monthly Daily Monthly Daily Monthly

Property Maximum Average Maximum Average Maximum Average Maximum Average

[mg/L]

BPT BCT BAT NSPS

BOD5 (a) 61 22 61 22 NA NA 61 22

TSS (b) 58 26 58 26 NA NA 58 26

Oil and Grease 36 16 36 16 36 16 36 16

(HEM) (c)

pH Within 6 to 9 at all times. NA NA Within 6 to 9 at all times.

Fluoranthene 0.076 NA NA NA 0.076 NA 0.076 NA

Phenanthrene 0.34 NA NA NA 0.34 NA 0.34 NA

(a) BOD - Biochemical oxygen demand (5-day). 5

(b) TSS - Total suspended solids.

(c) HEM - Hexane extractable material.

NA - Not applicable.
Section 2.0 - Summary and Scope

2-11

Table 2-6

Barge/Chemical & Petroleum Subcategory: BPT, BCT, BAT, and NSPS

Concentration-Based Limitations for Discharges to Surface Waters

Pollutant or

Pollutant Daily Monthly Daily Monthly Daily Monthly Daily Monthly

Property Maximum Average Maximum Average Maximum Average Maximum Average

[mg/L]

BPT BCT BAT NSPS

BOD5 (a) 61 22 61 22 NA NA 61 22

TSS (b) 58 26 58 26 NA NA 58 26

Oil and Grease 36 16 36 16 NA NA 36 16

(HEM) (c)

pH Within 6 to 9 at all times. NA NA Within 6 to 9 at all times.

Cadmium 0.020 NA NA NA 0.020 NA 0.020 NA

Chromium 0.42 NA NA NA 0.42 NA 0.42 NA

Copper 0.10 NA NA NA 0.10 NA 0.10 NA

Lead 0.14 NA NA NA 0.14 NA 0.14 NA

Mercury 0.0013 NA NA NA 0.0013 NA 0.0013 NA

Nickel 0.58 NA NA NA 0.58 NA 0.58 NA

Zinc 8.3 NA NA NA 8.3 NA 8.3 NA

(a) BOD - Biochemical oxygen demand (5-day). 5

(b) TSS - Total suspended solids.

(c) HEM - Hexane extractable material.

NA - Not applicable.
Section 2.0 - Summary and Scope

2-12

Table 2-7

Food Subcategory: BPT, BCT, and NSPS Concentration-Based Limitations for

Discharges to Surface Waters

Pollutant or Daily Monthly Daily Monthly Daily Monthly

Pollutant Property Maximum Average Maximum Average Maximum Average

[mg/L]

BPT BCT NSPS

BOD5 (a) 56 24 56 24 56 24

TSS (b) 230 86 230 86 230 86

Oil and Grease 20 8.8 20 8.8 20 8.8

(HEM) (c)

pH Within 6 to 9 at all times.

(a) BOD - Biochemical oxygen demand (5-day). 5

(b) TSS - Total suspended solids.

(c) HEM - Hexane extractable material.
Section 2.0 - Summary and Scope

2-13

Table 2-8

Summary of Technology Basis for PSES and PSNS

Subpart Subcategory Technology Basis

A Truck/Chemical PSES & Equalization; Oil/water separation; Turn-key treatment system

& Petroleum PSNS including chemical oxidation, neutralization, coagulation, and

clarification; and Sludge dewatering.

B Rail/Chemical PSES & Oil/water separation; Equalization; Dissolved air flotation; and Sludge

& Petroleum PSNS dewatering.

C Barge/Chemical PSES & Oil/water separation; Dissolved air flotation; Filter press; Biological

& Petroleum PSNS treatment; and Sludge dewatering.
Section 2.0 - Summary and Scope

2-14

Table 2-9

Truck/Chemical & Petroleum Subcategory: PSES and PSNS Concentration-Based

Limitations for Discharges to POTWs

Pollutant or Pollutant Property PSES PSNS

Daily Maximum [mg/L]

Non-polar Material (SGT-HEM) (a) 26 26

Copper 0.84 0.84

Mercury 0.0031 0.0031

(a) SGT-HEM - Silica-gel treated hexane extractable material.
Section 2.0 - Summary and Scope

2-15

Table 2-10

Rail/Chemical & Petroleum Subcategory: PSES and PSNS Concentration-Based

Limitations for Discharges to POTWs

Pollutant or Pollutant Property PSES PSNS

Daily Maximum [mg/L]

Non-polar Material (SGT-HEM) (a) 26 26

Fluoranthene 0.076 0.076

Phenanthrene 0.34 0.34

(a) SGT-HEM - Silica-gel treated hexane extractable material.
Section 2.0 - Summary and Scope

2-16

Table 2-11

Barge/Chemical & Petroleum Subcategory: PSES and PSNS Concentration-Based

Limitations for Discharges to POTWs

Pollutant or Pollutant Property PSES PSNS

Daily Maximum [mg/L]

Non-polar Material (SGT-HEM) (a) 26 26

Cadmium 0.020 0.020

Chromium 0.42 0.42

Copper 0.10 0.10

Lead 0.14 0.14

Mercury 0.0013 0.0013

Nickel 0.58 0.58

Zinc 8.3 8.3

(a) SGT-HEM - Silica-gel treated hexane extractable material.
Section 3.0 - Data Collection Activities

3-1

3.0 DATA COLLECTION ACTIVITIES

EPA collected data from a variety of sources including existing data from previous

EPA and other governmental data collection efforts, industry provided information, data collected

from questionnaire surveys, and field sampling data. Each of these data sources is discussed

below, as well as the quality assurance/quality control (QA/QC) and other data editing

procedures. Summaries and analyses of the data collected by EPA are presented in Sections 4.0

through 12.0.

3.1 Summary of TECI Information Collected Prior to 1992

Prior to 1992, EPA conducted two studies of the Transportation Equipment

Cleaning Industry (TECI). The first study was performed during the 1973-74 period for the

Transportation Industry Point Source Category. This broad study of the transportation industry

was not specific to transportation equipment cleaning (TEC) processes and wastewaters and did

not result in any regulations for the TECI. Information from the first study was obtained from

only a few TEC facilities and was limited to conventional pollutants. Because of the age of this

study, EPA did not use any data from this study in the development of the rule.

In 1989, EPA published the Preliminary Data Summary for the Transportation

Equipment Cleaning Industry (1). This second study was performed in response to the Domestic

Sewage Study, which identified TEC facilities as potentially discharging high levels of

conventional, toxic, and nonconventional pollutants in raw and treated wastewaters (2). The

study was a preliminary investigation to determine the size of the TECI and to estimate the total

discharge of priority pollutants. EPA used this data to perform an environmental impact analysis

which formed the basis for EPA's decision to develop effluent guidelines specifically for the TECI.

For the second study, the Agency sampled eight TEC facilities between 1986-87,

including one aircraft, three tank truck, two rail tank car, and two tank barge cleaning facilities. 

Raw TEC wastewater, treated effluent, and sludge were collected and analyzed at each facility. 
Section 3.0 - Data Collection Activities

3-2

The samples were analyzed for analytes on the 1987 Industrial Technology Division List of

Analytes. This list contains conventional pollutants, EPA's priority pollutants (excluding fecal

coliform bacteria and asbestos), and 285 additional organic and inorganic nonconventional

pollutants or pollutant characteristics.

3.2 Summary of the TECI Questionnaires

A major source of information and data used in developing effluent limitations

guidelines and standards was industry responses to technical and economic questionnaires

distributed by EPA under the authority of Section 308 of the Clean Water Act. These

questionnaires requested information concerning tank cleaning operations and wastewater

generation, treatment and discharge, as well as wastewater characterization data. Questionnaires

also requested financial and economic information for use in assessing economic impacts and the

economic achievability of technology options.

3.2.1 Identification of Potential TECI Population

In order to characterize the TECI, EPA first developed a potential list of TEC

facilities by identifying all potential segments within the industry. EPA characterized the TECI

into industry segments based on tank type cleaned (truck, rail, barge, etc.) and business

operational structure (independents, carriers, shippers, and builder/leasers) as described in Section

4.0. Since transportation facilities may clean a variety of tank types and may perform a variety of

business operations, TEC facilities may have been classified under more than one of these tank

type and operational structure segments. 

The Agency was unaware of any single source or set of sources that specifically

identify facilities that perform TEC operations. Likewise, there is no single Standard Industrial

Classification (SIC) code or set of SIC codes that specifically identify facilities that perform TEC

operations. Therefore, a variety of sources were identified and evaluated including transportation
Section 3.0 - Data Collection Activities

3-3

industry directories, Dun and Bradstreet's Information Services, several Agency databases, trade

journals, trade associations, and contacts with state and local authorities.

The Agency performed an exhaustive search to identify all available sources listing

facilities that potentially perform TEC operations. In addition to obtaining lists of facilities

known to perform TEC activities, data sources were also used to identify potential TEC facilities

by one or more of the following criteria: (1) they own, operate, or maintain transportation

equipment (tank trucks, rail tank cars, tank barges); (2) they own, operate, or maintain equipment

used by the transportation segments applicable to the TECI (truck haulage, rail transportation,

and water transportation); or (3) they report under an SIC code that includes facilities that have

the potential to own, operate, or maintain transportation equipment (e.g., local liquid haulage,

marine cargo handling, loading or unloading vessels). Table 3-1 lists the major sources identified

by EPA by tank type and business operational structure.

The list of facilities obtained from different sources varied in terms of the

probability that the facilities on the list actually perform TEC operations. For example, EPA

considered facilities identified through trade association lists or telephone contacts to have a high

probability of performing TEC operations, while facilities identified through the various SIC

codes had a lower likelihood of actually performing TEC operations. In order to account for the

variation in the quality of data sources, each facility in the TECI site identification database was

assigned a level of assurance representing the probability that the facility performs TEC

operations. 

Facilities were assigned level of assurances of either high, medium, or low based

upon the Agency's evaluation of information provided by each facility source, including

information provided by industry and trade association representatives, research of industrial

practices, and information obtained during telephone conversations. In general, a high level of

assurance indicated that a facility was specifically identified as performing TEC operations. 

Facilities assigned a medium level of assurance were identified as either owning, operating, or

maintaining transportation equipment or performing cleaning of transportation equipment (not
Section 3.0 - Data Collection Activities

3-4

specifically tanks) in the transportation segments applicable to the TECI (e.g., SIC Codes 4789-

0402 Railroad Car Repair and 4789-0401 Cleaning Railroad Trailers). A low level of assurance

was assigned to facilities identified as owning, operating, or maintaining equipment related to the

transportation industry with no indication of whether cleaning operations are performed (e.g., SIC

Code 4491-0101 Marine Cargo Handling, Loading Vessels). Table 3-2 includes a complete list of

sources and source level of assurance used to identify potential TEC facilities. 

EPA identified a total potential industry population of 30,280 facilities by

compiling the lists from all sources. EPA then constructed a database, called the TECI site

identification database, of 7,940 facilities that potentially clean tank interiors. For some data

sources, only a portion (i.e., a statistical sample) of the total available records were entered into

the database. Therefore, the 7,940 facilities contained in TECI site identification database

represents a total potential industry population of 30,280 facilities. For each potential TEC

facility identified, the following data were entered into the database: facility type (e.g., truck,

rail), facility name, facility address, facility telephone numbers, primary and secondary facility

contacts, source(s) of facility information, and level of assurance. 

Since multiple sources were used to identify the TEC population, duplicate

searches were performed on the database to ensure that there were no duplicate records in the

TECI site identification database. This database served as the initial population for EPA to collect

industry provided data.

During identification of the potential TECI population and development of the

Screener Questionnaire sample frame (see Section 3.2.2.1), the Agency included facilities that

clean the exteriors of aircraft and facilities that deice/anti-ice aircraft and/or pavement in the scope

of the TECI. As such, the Agency endeavored to identify the population of facilities that perform

these operations and entered information for these facilities into the TECI site identification

database. The TECI site identification database includes information for an additional 3,960

facilities that potentially clean the exteriors of aircraft or deice/anti-ice aircraft and/or pavement. 

These 3,960 facilities represent a total potential industry population of 4,781 facilities. However,
Section 3.0 - Data Collection Activities

3-5

the Agency decided to postpone consideration of developing effluent limitations guidelines and

standards for this segment. Therefore, references to the aircraft segment in this section are limited

to those required to accurately describe the statistical sampling performed to develop the TECI

Screener Questionnaire mailing list (see Section 3.2.2.3).

3.2.2 1993 Screener Questionnaire for the Transportation Equipment Cleaning

Industry (Screener Questionnaire)

The objectives of the Screener Questionnaire were to:

C Identify facilities that perform TEC operations;

C Evaluate TEC facilities based on wastewater, economic, and/or operational

characteristics;

C Develop technical and economic profiles of the TECI;

C Select a statistical sample of screener respondents to receive a Detailed

Questionnaire (see Section 3.2.3) such that the sample responses may be

used to characterize the TECI; and

C Select facilities for EPA's TECI engineering site visit and sampling

program.

3.2.2.1 Development of the Screener Questionnaire Sample Frame

In order to gather all available information on the TECI, the Agency could have

mailed Screener Questionnaires to all 11,900 facilities in the TECI site identification database;

however, the Agency decided that a sample size of 4,000 would sufficiently represent the variety

of technical and economic characteristics of the TECI and meet the objectives of the Screener

Questionnaire while minimizing the burden to both industry and government. Therefore, a

database containing information on potential TEC facilities was developed from a sample of 4,000

facilities (including both tank interior cleaning and aircraft deicing facilities). Development of the

statistical sample frame for the Screener Questionnaire is discussed below.
nh

' n

NnPh Qh

'NhPh Qh

Section 3.0 - Data Collection Activities

3-6

Facilities were selected from the TECI site identification database to receive a

Screener Questionnaire based upon two factors: (1) facility type (i.e., tank truck cleaning, rail

tank car cleaning, tank barge cleaning, transfer facilities, and aircraft segment), and (2) probability

of performing TEC operations (level of assurance, as discussed in Section 3.2.1). This selection

approach divides the TECI into 15 distinct categories or cells (i.e., five facility types times three

levels of assurance). 

Since facilities that were specifically identified as performing TEC operations were

assigned a high level of assurance, all records in the TECI site identification database with a high

level of assurance were selected for the mailing list. The initial sample size selected from the

remaining cells was calculated using the following equation, which minimizes the statistical

variance for a fixed total sample size (3):

(1)

where:

h = Cell (e.g., barge-medium)

n = Total number of facilities remaining to be allocated [4,000 - 1,211

(high) = 2,789]

n = Sample size for each cell h

Nh = Total number of facilities in each cell for which records are

available

P = Probability of performing TEC operations h

Qh = 1 - P h

The Agency estimated that 15% of facilities with a low level of assurance perform TEC

operations, and assigned a Ph value of 0.15 to these facilities. This estimate was based on

contacts with a representative sample of facilities in the TECI, contacts with trade associations,
Section 3.0 - Data Collection Activities

3-7

and information contained in facility identification sources. Similarly, a P value of 0.50 was h

assigned to the medium level-of-assurance facilities since the Agency estimated that 50% of these

facilities perform TEC operations.

The Agency performed statistical precision estimates based on the sample cell sizes

determined by equation (1) and the assigned Ph value for the medium and low level-of-assurance

cells. These precision estimates predicted unacceptably high statistical variances for cells with a

medium level of assurance and less than 400 records in the TECI site identification database (railmedium, transfer-medium, and barge-medium). Therefore, all records within these cells were

selected for the mailing list.

Equation (1) was then reapplied to the remaining cells from which random samples

would be selected. The total number of facilities to be allocated, n, was revised from 2,789 to

2,205 after eliminating the three additional census cells (i.e., 4,000 - 1,211 (high) - 218 (railmedium) - 357 (barge-medium) - 9 (transfer-medium) = 2,205). Table 3-3 summarizes the final

distribution of facilities in the TECI Screener Questionnaire mailing list by facility type and level

of assurance.

Facilities in the TECI site identification database were then randomly selected for

the noncensus cells, with the exceptions of the truck-medium and transfer-low cells. For the

truck-medium cell, a “stratified” random selection of facilities, based on source, was required

because the truck-medium cell includes facilities identified by several sources from which only a

fraction of the potential records available were received, as well as by several sources for which

all available records were received (i.e., randomly selecting facilities from this cell, without

consideration of source, would bias sources for which a larger percentage of the records available

were received). To develop an accurate statistical representation of this cell, the Agency

calculated a sample size for each source. Facilities in the truck-medium cell were then selected

randomly within each source using the individually calculated, source-specific sample size, with

the sum of the source-specific sample sizes equalizing to the total number of facilities to be

selected from the truck-medium cell as calculated using equation (1).
Section 3.0 - Data Collection Activities

3-8

Only two facilities were available for selection from the transfer-low cell. Due to

the low probability that the transfer-low facilities perform TEC operations, EPA chose only one

of the two facilities to receive a questionnaire.

3.2.2.2 Development of the Screener Questionnaire

The Agency requested the following site-specific information for calendar year

1992 in the four-page Screener Questionnaire:

C Facility name and address;

C Contact person;

C Business entity that owns the facility;

C Number of TEC facilities operated by the business entity;

C Whether the facility performs TEC operations;

C Whether the facility generates TEC process wastewater;

C TEC process wastewater discharge information;

C Number of tank interior cleanings performed by tank type;

C Percentage of tank interior cleanings performed by cargo type;

C Types of cleaning processes performed;

C Facility total average daily wastewater discharge;

C Wastewater treatment technologies or disposal methods;

C Facility operational structure (e.g., carrier, independent);

C Number of employees - total and TEC-related; and

C Annual revenues - total and TEC-related.

3.2.2.3 Administration of the Screener Questionnaire

In December 1993, the Agency mailed 3,240 Screener Questionnaires to potential

tank interior cleaning facilities. This Screener Questionnaire mail-out comprised the statistical

sample frame described in Section 3.2.2.1. Additionally, EPA mailed out Screener Questionnaires

to 28 facilities that transport hazardous waste in order to obtain additional data for use in

determining their applicability under the TECI guideline. For the same reason, EPA mailed one

Screener Questionnaire to a facility that cleans the interiors of ocean/sea tankers. This facility had

been identified subsequent to development of the TECI site identification database. Since these

29 facilities were not included in the statistical sample population, responses from these facilities
Section 3.0 - Data Collection Activities

3-9

were not used in calculating national estimates for the TECI. Table 3-4 summarizes the Screener

Questionnaire mail-out, follow-up, and receipt activities.

EPA established a toll-free helpline to assist Screener Questionnaire recipients in

completing the questionnaire. The helpline received calls from 698 questionnaire recipients.

Following receipt of the Screener Questionnaire responses, an initial review was

performed to determine whether the facility indicated that TEC operations were performed at

their location. Facilities that indicated that TEC operations were performed at their location and

that they generated TEC wastewater were preliminarily designated “in-scope” facilities. Facilities

that indicated that TEC operations were performed at their location but that they did not generate

TEC wastewater were designated “dry” facilities. Facilities that indicated that TEC operations

were not performed at their location were designated “out-of-scope” facilities. Responses from a

total of 754 in-scope facilities and 24 dry facilities were received by the Agency. An additional

245 Screener Questionnaires for which responses were not received were determined to be either

inactive or out-of-scope based on telephone calls or other follow-up activities. Responses for 90

facilities, approximately two percent of the mailing list, were unaccounted for (i.e., certified mail

cards not returned, Screener Questionnaire returned as undeliverable, and follow-up phone calls

not returned). The remaining responses were from out-of-scope facilities.

Screener Questionnaire responses from in-scope facilities were then entered into

the Screener Questionnaire database. The quality of responses in the database was evaluated by

performing a number of database range and logic checks. For example, one check verified that

the total number of facility employees exceeded the number of employees that perform TECrelated activities. The Agency followed up with facilities that “failed” a prioritized list of range

and logic checks to resolve missing or contradictory information. 
Stratum Weight '

Nh

nh

Section 3.0 - Data Collection Activities

3-10

3.2.2.4 Calculation of National Estimates

Each source used to develop the TECI site identification database was considered

a statistical “stratum” during development of the Screener Questionnaire sample frame. Each

surveyed facility in a stratum represents a specific number of facilities in the national population. 

For example, if a surveyed facility falls within stratum “A” and the “weight” of that stratum is 5,

the responses received from that facility represent a total of five facilities in the overall TECI

population. Following receipt of the Screener Questionnaire responses (to account for

nonrespondents), EPA determined a weight associated with each stratum using the following

equation:

(2)

where:

Nh = Total number of facilities in stratum

nh = Number of facilities that responded to the Screener Questionnaire

Subsequent to administration of the Screener Questionnaire, the Agency reviewed

the Screener Questionnaire strata and specific facility assignments within the strata and

determined that post-stratification of certain sources (strata) and adjustment of certain facility

assignments within the strata would improve the statistical confidence of the strata and reduce

sample bias within the original sample frame. Post-stratification adjustments made are described

below. Additional details concerning post-stratification of the Screener Questionnaire sample

frame are included in reference 4. 

C Some facilities were identified by multiple sources in multiple

transportation types applicable to the TECI (e.g., truck facility in one

source and rail facility in another source). For the Screener Questionnaire

sample frame, these facilities were classified as “transfer” facilities. During

post-stratification, since these facilities are not characteristically different

from other facilities in the primary source (facilities identified by multiple

sources were assigned a primary source, generally based on the source
Section 3.0 - Data Collection Activities

3-11

level of assurance), they were reassigned to the original tank type in the

primary source for scale-up purposes.

C Facilities identified as performing TEC operations based on telephone

contacts during development of source level-of-assurance assignments had

been classified as “high,” regardless of the original source, because EPA

knew (i.e., had a high level of assurance) that these facilities performed

TEC operations. Classifying these facilities as “high” biased the national

estimates; therefore, these facilities were post-stratified to their original

source, facility type, and level of assurance group.

C In order to reduce the variability of the national estimates, several Screener

Questionnaire strata with similar weighting factors were collapsed into a

single strata and assigned a conglomerated weighting factor for the entire

collapsed strata. For example, all censused Screener Questionnaire strata

(e.g., truck-high, rail-high, barge-medium), with a few exceptions, were

collapsed into a single stratum.

After incorporating the post-stratification adjustments described above, the

Screener Questionnaire sample frame included 13 strata, which are listed in Table 3-5. EPA

recalculated the survey weighting factors for each of the revised Screener Questionnaire strata

and estimated that the total number of facilities in the TECI was 2,739 facilities. These data are

also listed in Table 3-5.

3.2.3 1994 Detailed Questionnaire for the Transportation Equipment Cleaning

Industry (Detailed Questionnaire)

EPA designed and administered a Detailed Questionnaire to a statistical sample of

eligible TEC facilities from the Screener Questionnaire respondents. The objectives of the

Detailed Questionnaire were to collect detailed site-specific technical and economic information

pertaining to the year 1994 to:

C Develop an industry profile;

C Characterize TEC processes, industry production (i.e., number and type(s)

of tanks cleaned), and water usage and wastewater treatment;
Section 3.0 - Data Collection Activities

3-12

C Perform an industry subcategorization analysis;

C Develop pollutant loadings and reductions estimates;

C Develop compliance cost estimates; and

C Determine the impacts of the rulemaking on the TECI.

3.2.3.1 Development of the Detailed Questionnaire Sample Frame

Facilities responding to the Screener Questionnaire were preliminarily identified as

“in-scope” if they performed TEC operations that generated wastewater in 1992. As shown in

Table 3-4, EPA received Screener Questionnaire responses from 754 in-scope facilities. Twentyfour of these responses were from the second mailing to 29 facilities described in Section 3.2.2.3

that were not part of the statistical sampling effort. Another 16 facilities indicated that although

they performed TEC operations in 1992, they would not be performing these operations in the

future. Therefore, 40 in-scope respondents were ineligible for selection to receive a Detailed

Questionnaire and were not included in the Detailed Questionnaire sample design. The 714

remaining in-scope respondents were then used as a basis for the sample design.

Based on responses to the Screener Questionnaire, four variables were considered

in designing the Detailed Questionnaire sample draw. The four variables were tank type,

operational structure, number of employees, and wastewater treatment in place. Each of the 714

potential Detailed Questionnaire recipients was classified based on these four variables as listed

below. Facilities with multiple classifications were assigned a primary classification based on their

predominant tank type cleaned, predominant operational structure, and highest level of

wastewater treatment with some exceptions noted below.

Tank Type

Truck

Rail

Barge
Section 3.0 - Data Collection Activities

3-13

Intermodal Tank Container

Intermediate Bulk Container

Tanker

Land-Water (clean barges or tankers and any other tank types)

Water (clean barges and tankers and no other tank types)

Land (clean any combination of trucks, intermodal tank containers, intermediate

bulk containers, or rail cars with no predominant tank type cleaned)

Operational Structure

Builder/Leaser

Carrier

Independent

Shipper

Not Elsewhere Classified (i.e., no predominant operational structure or operational

structure not provided)

Number of Employees

Small (varies by operational structure)

Large (varies by operational structure)

Level of Wastewater Treatment in Place

None or Pretreatment

Primary

Secondary

Advanced

Recycle/Reuse

Additional details concerning the methodology used to classify facilities within these four

variables are included in references 5 and 6.

The following criteria were used to select the 275 Detailed Questionnaire

recipients:

C Select a random sample of facilities, stratified by tank type, from the TECI

Screener Questionnaire census stratum;
Section 3.0 - Data Collection Activities

3-14

C Select all facilities in the TECI Screener Questionnaire noncensus strata

considered to be primarily composed of operational structures other than

“shippers”;

C Select a random sample of facilities in the TECI Screener Questionnaire

noncensus strata considered to be primarily shippers;

C Select all facilities with the tank type “land-water,” “tanker,” and “water”; 

C Select a random sample of at least 20 barge facilities; and

C Select all facilities in strata with two or fewer facilities comprising small

businesses (i.e., with small number of employees for the operational

structure).

The sampling strategy was designed to meet two objectives most effectively: (1) to

ensure that at least one facility was sampled from most cells (i.e., combinations of the four

variables previously listed), and (2) to ensure that the variance around the national estimates

would not be grossly inflated in attempting to meet the first objective. The design sampled

relatively fewer facilities in strata primarily composed of shippers than in strata primarily

composed of nonshippers, because, in most cases, the TEC wastewater generated by shippers

would be covered by other effluent guidelines. The last criterion described above was included to

evaluate cost impacts on small businesses.

To achieve the sample draw criteria listed above, the Detailed Questionnaire

stratification consisted of 23 strata created from the 13 Screener Questionnaire strata described in

Section 3.2.2.4. Table 3-6 lists the 23 Detailed Questionnaire strata and the distribution of

facilities in the TECI Detailed Questionnaire mailing list by these strata.

As part of the standard process of developing the Detailed Questionnaire, nine

facilities were selected and sent pretest questionnaires. EPA decided that data from the pretest

Detailed Questionnaire responses would not be used in national estimates because they

represented data from the year 1993 rather than 1994, the baseline year for the Detailed

Questionnaire data. The Detailed Questionnaire sample design treated the facilities that received

a pretest questionnaire as eligible for sample selection with the understanding that, if selected, a
Section 3.0 - Data Collection Activities

3-15

replacement facility would be chosen. Four questionnaire pretest facilities were selected during

the sample draw and were replaced. One of the four facilities was a member of a stratum from

which all facilities were to receive a Detailed Questionnaire (i.e., a census stratum). For this

stratum, the responses of the facilities remaining in the stratum were used to represent responses

from the pretest facility (i.e., the survey weight for the census stratum was revised from 1 to a

weight of more than 1).

3.2.3.2 Development of the Detailed Questionnaire

The Agency developed the Detailed Questionnaire to collect information necessary

to develop effluent limitations guidelines and standards for the TECI. The questionnaire was

developed in conjunction with EPA's Office of Pollution Prevention and EPA's Office of Solid

Waste. A draft version of the questionnaire was sent to nine pretest facilities to complete and to

several industry trade associations and companies for review and comment. Comments from

these facilities, trade associations, and companies were incorporated into the final version of the

Detailed Questionnaire.

The Detailed Questionnaire included two parts:

1. Part A: Technical Information

— Section 1: General Facility Information

— Section 2: TEC Operations

— Section 3: Wastewater Generation, Treatment, and Discharge

— Section 4: Wastewater Characterization Data

— Section 5: Pollution Prevention and Water Conservation

— Section 6: Questionnaire Certification for Part A - Technical

Information

2. Part B: Financial and Economic Information

— Section 1: Facility Identification

— Section 2: Facility and TEC Financial Information

— Section 3: Business Entity Financial Information

— Section 4: Corporate Parent Financial Information
Section 3.0 - Data Collection Activities

3-16

Part A, Section 1 requested information necessary to identify the facility and to

determine wastewater discharge locations. The information collected by this section included

facility name, mailing and physical facility address, technical contract person and address, facility

layout diagram, age of facility, major modifications made to the facility, environmental permits

held by the facility, wastewater discharge location(s), and whether the facility is regulated by any

existing or upcoming national categorical limitations or standards.

Part A, Section 2 requested information necessary to develop an industry profile,

characterize TEC processes, determine industry production (i.e., number and type(s) of tanks

cleaned), and perform an industry subcategorization analysis. The information collected included

a TEC process flow diagram, description of TEC processes, TEC operating days per year and

hours per day, types and numbers of tanks cleaned, cleaning processes performed, cleaning

solutions used and disposition of spent cleaning solutions, general cargo types and specific cargos

cleaned, heel generation and disposition, other operations performed (e.g., tank hydrotesting,

exterior washing), and air emissions from TEC operations.

Part A, Section 3 requested information regarding wastewater generation,

recycle/reuse, and discharge and to determine wastewater treatment in place. This information

was used to develop regulatory compliance cost estimates. The information collected in this

section included a wastewater generation, treatment, and discharge diagram; wastewater streams

generated and volume; wastewater streams discharged, volume, and destination; wastewater

recycle/reuse streams and destination; wastewater treatment unit operations; wastewater

treatment residuals generated, volume, disposition, and costs; wastewater treatment system

capital and annual costs; and space availability at the facility.

Part A, Section 4 requested information concerning the availability of wastewater

stream characterization data and/or treatability data. This information was used to determine

whether supplemental analytical data requests would be required.
Section 3.0 - Data Collection Activities

3-17

Part A, Section 5 requested information concerning pollution prevention and water

conservation activities. This information was used to identify applicable pollution prevention and

water conservation technologies for consideration in developing regulatory technology options. 

The information collected included submittal of any facility pollution prevention policies or plans,

wastewater pollution prevention activities performed and their impacts, water conservation

practices used and their impacts, solid waste pollution prevention activities performed and their

impacts, and air pollution prevention activities performed and their impacts.

Part A, Section 6 included a certification form indicating that information

submitted to EPA was true, accurate, and complete; a check box indicating whether any portion

of questionnaire responses were considered confidential business information; and a check box

indicating whether contract personnel perform TEC operations or whether TEC operations are

performed by a mobile facility.

Part B, Section 1 requested information necessary to identify the facility and

identify the facility's corporate hierarchy. The information collected by this section included

facility name, mailing and physical facility address, county, street names of closest intersection,

contact person and address, types of TEC operations performed, corporate hierarchy, corporation

type, and facility type.

Part B, Section 2 requested information necessary to develop an industry

economic profile and to assess facility-level economic impacts associated with TECI effluent

guidelines. The information collected by this section included primary and secondary SIC codes,

first month of facility fiscal year, whether the facility performs non-TEC operations and types,

purpose of TEC and non-TEC operations, cost increase that would lead to using commercial tank

cleaning sources, percentage of commercial tank interior cleanings performed, and how TEC

costs are recovered. The section also requested why clients use TEC services, whether the facility

rejects cargos, who accepts rejected cargos, factors that affect TEC operations used, number and

types of tanks cleaned, impact of 1993 flooding on TEC revenues and costs, distance to nearest

commercial TEC facility, sensitivity of clients to price increases, discount rate of borrowed
Section 3.0 - Data Collection Activities

3-18

money, balance sheet information including assets and liabilities, TEC revenue and cost

information, income statement information, assessed value, number of employees, and financial

statements.

Part B, Section 3 requested information necessary to assess business entity-level

economic impacts associated with TECI effluent guidelines. The information collected by this

section included name and mailing address, primary and secondary SIC codes, business entity

type, list of TEC facilities operated by the business entity and TEC operations performed, year the

business entity gained control of facility, and first month of fiscal year. The section also requested

top revenue-generating activities, discount rate of borrowed money, balance sheet information

including assets and liabilities, TEC revenue and cost information, financial statement information,

number of employees, and financial statements.

Part B, Section 4 requested information necessary to assess corporate parent-level

economic impacts associated with potential TECI effluent guidelines. The information collected

by this section included name and mailing address, primary and secondary SIC codes, year the

corporate parent gained control of the business entity, corporate parent type, and financial

statements.

A blank copy of the Detailed Questionnaire and copies of the Detailed

Questionnaire responses (nonconfidential portions) are contained in the administrative record for

this rulemaking. Further details on the types of information collected and the potential use of the

information are contained in the Information Collection Request for this project (7). Detailed

information on Part B is presented in the economic analysis report (8).

3.2.3.3 Administration of the Detailed Questionnaire

In April 1995, the Agency mailed 275 Detailed Questionnaires to in-scope TEC

facilities identified from Screener Questionnaire responses. This Detailed Questionnaire mail-out

comprised the statistical sample. EPA evaluated the specific facilities selected to receive the
Section 3.0 - Data Collection Activities

3-19

Detailed Questionnaire and determined that the Detailed Questionnaire sample population would

not include a sufficient number of facilities that operate potential BAT end-of-pipe treatment

technologies. To obtain additional detailed wastewater treatment information for use in

developing regulatory options and estimating compliance cost, EPA mailed an additional 12

Detailed Questionnaires to facilities that operate potential BAT end-of-pipe treatment

technologies. Since these 12 facilities were not included in the statistical sample population,

responses from these facilities were not used in calculating national estimates for the TECI. Table

3-7 summarizes the Detailed Questionnaire mail-out, follow-up, and receipt activities.

EPA established toll-free helplines, one for Part A and one for Part B, to assist

Detailed Questionnaire recipients in completing the questionnaire. The Part A helpline received a

total of 477 calls from 192 facilities. The Part B helpline received a total of 161 calls.

The Agency completed a detailed engineering review of Part A of the Detailed

Questionnaire responses to evaluate the completeness, accuracy, and consistency of information

provided by the respondents, and to perform additional response coding to facilitate data entry

and analysis of questionnaire responses. The TEC Questionnaire Part A Coding/Review Checklist

(9) outlines the processes used by engineering reviewers to evaluate and code the questionnaire

responses. The Data Element Dictionary for Part A of the U.S. Environmental Protection Agency

1994 Detailed Questionnaire for the Transportation Equipment Cleaning Industry Database (10)

contains information codes reported either by the respondents or added by the engineering

reviewers during questionnaire response evaluation. The Agency contacted respondents by

telephone or letter who provided inaccurate, incomplete, or contradictory technical information.

The Agency entered the questionnaire responses into the Detailed Questionnaire

database, the structure of which is documented in the Detailed Questionnaire Data Element

Dictionary referenced above. The database was developed in FoxProTM; however, the database

was converted to SAS for other users to access. After engineering review and coding, ®

questionnaire responses were double key entered using a data entry and verification system, also

developed in FoxProTM. Additional documentation concerning the data entry and verification
Section 3.0 - Data Collection Activities

3-20

system is contained in the administrative record for this rulemaking. Inconsistencies in double key

entry were verified by the questionnaire reviewers.

After population of the questionnaire database, the Agency performed range and

logic checks to ensure that the database was complete and accurate. During questionnaire

analysis, additional questionnaire database “cleanup” was performed to identify and resolve any

additional data that were questionable based on engineering judgement. Responses not

standardized during coding were standardized, where appropriate, to facilitate questionnaire

analysis.

3.2.3.4 Calculation of National Estimates

Each surveyed facility in a stratum represents a specific number of facilities in the

national population. Therefore, EPA determined a weight associated with each stratum. For

example, if a surveyed facility falls within stratum “A” and the weight of that stratum is 5, the

responses received from that facility represent a total of five facilities in the overall TECI

population. EPA calculated the survey weighting factors for each of the Detailed Questionnaire

strata using equation (2) in Section 3.2.2.4. Details concerning calculation of the Detailed

Questionnaire survey weights are included in reference 13. Table 3-8 shows the Detailed

Questionnaire strata and their associated strata weights. Calculation of survey weighting factors,

which account for nonrespondents, is described in reference 11.

During review of the Detailed Questionnaire responses, the Agency classified each

facility within one of the following three categories:

1. Direct and Indirect Discharge Facilities: TEC facilities that discharge

wastewater to surface waters of the United States (direct discharge) or to a

publicly-owned treatment works (POTW) (indirect discharge).

2. Zero Discharge Facilities: TEC facilities that do not discharge wastewater to

surface waters or to a POTW, and may instead haul wastewater off site to a
Section 3.0 - Data Collection Activities

3-21

centralized waste treater, practice total waste water recycle/reuse, or land apply

wastewater.

3. Previously Regulated (also called captive facilities): TEC facilities that are

covered by existing or upcoming effluent guidelines. TEC operations are a very

small part of their overall operations. These facilities include facilities regulated

under the Organic Chemicals, Plastics, and Synthetic Fibers Effluent Guideline, the

Dairies Effluent Guideline, the Centralized Waste Treaters Effluent Guideline, and

the Industrial Waste Combustors (Incinerators) Effluent Guideline. These facilities

will not be covered by the TECI effluent guideline as long as they commingle and

treat the TEC wastewater with their major source wastewater.

National estimates of the total population of these three TEC facility types are listed in the

following table:

Facility Type Responses Received Total Population

Number of Sample Population Estimated Number of Facilities in

Direct and Indirect Discharge 93 692

Facilities

Zero Discharge Facilities 49 547

Previously Regulated Facilities 34 1,166

3.3 Summary of EPA's TECI Site Visit Program from 1993 Through 1999

The Agency conducted 44 engineering site visits (13 of which were conducted

concurrently with sampling) at 43 facilities to collect information about TEC processes, water use

practices, pollution prevention practices, wastewater treatment technologies, and waste disposal

methods. These facilities were also visited to evaluate potential sampling locations (as described

in Section 3.4). In general, the Agency visited facilities that encompass the range of TEC

facilities. The following table summarizes the number of site visits performed by primary tank

type cleaned.
Section 3.0 - Data Collection Activities

3-22

Primary Tank Type Cleaned Number of Facilities Visited

Truck/Intermediate Bulk Container 22

Rail 10

Barge 9 (one facility visited twice)

Tanker 1

Closed-Top Hopper Barge 1

3.3.1 Criteria for Site Selection

The Agency based site selection on information submitted in response to the TECI

Screener and Detailed Questionnaires. The Agency also contacted trade association

representatives to identify representative TEC facilities for site visits. The Agency used the

following five criteria to select facilities that encompassed the range of TEC operations,

wastewater characteristics, and wastewater treatment practices within the TECI.

1. Tank Types Cleaned: Truck, Rail, Barge, Intermodal Tank Container,

Intermediate Bulk Container, Tanker, Closed-Top Hoppers;

2. Operational Structure: Independent, Carrier, Shipper, Combinations;

3. Treatment: Advanced, Secondary, Primary, None;

4. Cargo Types Cleaned: Chemicals, Food grade, Petroleum, Combinations; and

5. Discharge Status: Direct, Indirect, 100% Wastewater Recycle/Reuse, Contract

Haul.

Facility-specific selection criteria are contained in site visit reports (SVRs) prepared for each

facility visited by EPA. Exceptions include site visits performed concurrently with sampling in

which case facility-specific selection criteria are contained in sampling episode reports (SERs)

prepared for each facility sampled by EPA. The SVRs and SERs are contained in the

administrative record for this rulemaking.
Section 3.0 - Data Collection Activities

3-23

3.3.2 Information Collected

During the site visits, EPA collected the following types of information:

C General facility information including size and age of facility, number of

employees, operating hours per day and days per year, number of cleaning

bays or docks, facility clients, and non-TEC operations;

C Types of tanks and cargos cleaned, number of tanks cleaned by cargo type,

reasons for tank cleaning, most difficult cargos to clean, whether and why

tanks are rejected;

C Typical cleaning processes used by tank and cargo type;

C Types of cleaning equipment used and operating volume and pressure;

C Heel removal, management, volume, and disposition;

C Cleaning solutions used, temperature, whether cleaning solutions are

recirculated, and disposition of spent cleaning solutions;

C Types and disposition of wastewater generated;

C Volumes of wastewater generated per tank cleaned by tank and cargo type;

C Types of in-process source reduction and recycling performed;

C Wastewater treatment units and operation including volume, flow rate, and

treatment chemicals used, amounts, and purpose;

C Wastewater discharge location and monitoring requirements;

C Types, volume, and disposition of wastewater treatment residuals;

C Identification of potential sampling points and sampling methodologies; and

C Logistical and health and safety information required for sampling.

This information is documented in the SVRs or SERs for each visited facility.
Section 3.0 - Data Collection Activities

3-24

3.4 Summary of EPA's TECI Sampling Program from 1994 through 1996

The Agency conducted 20 sampling episodes at 18 facilities (two facilities were

sampled twice). Twelve of these sampling episodes were conducted to obtain untreated TEC

process wastewater and treated final effluent characterization data from facilities representative of

the variety of TEC facilities. Wastewater treatment sludge was also characterized at two of these

twelve facilities to determine whether the sludge was hazardous. Each of these “characterization”

sampling episodes encompassed one sampling day. Eight additional sampling episodes were

conducted to obtain both untreated TEC process wastewater characterization data and to evaluate

the effectiveness and variability of wastewater treatment units used to treat TEC wastewater. Of

these 8 sampling episodes, 1 was conducted for 1 day, 2 were conducted for 3 days each, 4 were

conducted for 4 days each, and 1 was conducted for 5 days. The following table summarizes the

number of sampling episodes performed by primary tank type cleaned.

Primary Tank Type Cleaned Number of Facilities Sampled

Truck 7

Rail 5

Barge 7 (two facilities sampled twice)

Closed-Top Hopper Barge 1

At several facilities, sampled TEC waste streams were commingled with other wastewater sources

including exterior cleaning wastewater, boiler wastewater, and contaminated stormwater. 

Samples were typically analyzed for volatile organics, semi-volatile organics, organo-halide

pesticides, organo-phosphorus pesticides, phenoxy-acid herbicides, dioxins and furans, metals,

and classical wet chemistry parameters. The results of this data collection are discussed in

Sections 6.0, 7.0, and 12.0.

3.4.1 Criteria for Site Selection

The Agency based site selection on information submitted in response to the TECI

Screener and Detailed Questionnaires or information collected during TECI engineering site
Section 3.0 - Data Collection Activities

3-25

visits. The Agency used the same five general criteria to select facilities for sampling as that used

to select facilities for site visits:

1. Tank Types Cleaned: Truck, Rail, Barge, Closed-Top Hoppers;

2. Operational Structure: Independent, Carrier, Shipper;

3. Cargo Types Cleaned: Chemicals, Food grade, Petroleum;

4. Treatment: Advanced, Secondary, Primary, None; and

5. Discharge Status: Direct, Indirect, 100% Wastewater Recycle/Reuse.

Facilities sampled during the “characterization” sampling episodes were selected primarily based

on tank type and cargo type cleaned, for the overall purpose of characterizing wastewater that

was typical of the TECI and representative of the variety of technical and economic characteristics

of the TECI. Facilities sampled during the wastewater treatment evaluation sampling episodes

were selected primarily based on use of potential BAT and PSES control technologies and widest

possible coverage of the TECI effluent guidelines subcategories. Facility-specific selection

criteria are contained in SERs and/or sampling and analysis plans (SAPs) prepared for each

facility sampled by EPA. The SERs and SAPs are contained in the administrative record for this

rulemaking.

3.4.2 Information Collected

In addition to wastewater and solid waste samples, the Agency collected the

following information during each sampling episode:

C Dates and times of sample collection;

C Flow data corresponding to each sample;

C Production data (i.e., number of tanks cleaned per sampling day)

corresponding to each wastewater sample;

C Design and operating parameters for source reduction, recycling, and

treatment technologies evaluated during sampling; and
Section 3.0 - Data Collection Activities

3-26

C Temperature, free chlorine, and pH of the sampled waste streams.

All data collected during sampling episodes are documented in the SER prepared for each

sampled facility. SERs are included in the administrative record for this rulemaking. The SERs

also contain technical analyses of treatment system performance (where applicable).

3.4.3 Sample Collection and Analysis

During the sampling episode, teams of EPA personnel and EPA contractor

engineers, scientists, and technicians collected and preserved samples and shipped them to EPA

contract laboratories for analysis. Sample collection and preservation were performed according

to EPA protocols as specified in the TEC Quality Assurance Project Plan (QAPP) (12) and the

EAD Sampling Guide (13).

In general, composite samples were collected from wastewater streams with

compositions that were expected to vary over the course of a production period (e.g., untreated

TEC process wastewater prior to equalization). Grab samples were collected from streams that

were not expected to vary over the course of a production period (e.g., wastewater streams

collected subsequent to extended equalization). Composite samples of wastewater treatment

sludge were also collected. EPA collected the required types of quality control samples as

specified in the TEC QAPP, such as trip blanks, equipment blanks, and duplicate samples, to

verify the precision and accuracy of sample analyses. The list of analytes for each waste stream,

analytical methods used, and the analytical results, including quality control samples, are included

in the SERs prepared for each facility sampled.

3.5 Summary of Post-Proposal Data Collected

EPA received 50 comment submissions on the TEC proposed rule. From these

comments, EPA obtained additional data and information from the industry and POTWs,

including monitoring data and information related to cost of treatment and pass through of
Section 3.0 - Data Collection Activities

3-27

pollutants at POTWs. The monitoring data submitted included 5 days of effluent data from two

truck/chemical facilities and 11 days of final effluent data from an indirect discharger than cleans

IBCs; however, these data were not used because the following were not provided: paired

influent data; specific flow production data for the sampling point; the treatment technologies

used at the facility; and the specific waste streams treated. EPA also received five days of SGTHEM data from a POTW for raw wastewater, primary effluent, and secondary effluent waste

streams. EPA acquired additional information regarding IBCs as well as data critiques on the

pesticide/herbicide data. The specific data, information, and comments provided to EPA are

located in the administrative record for this rulemaking.

The Agency obtained self-monitoring data from two additional Barge/Chemical &

Petroleum facilities operating BPT/BAT treatment. The data consisted of effluent data for

conventional pollutants over a one-year period from both facilities, and effluent data for priority

pollutants over a one-year period from one facility, totaling approximately 190 effluent data

points. The facilities also provided self-monitoring data for chemical oxygen demand (COD) at

the influent to biological treatment over the same time period. Complete site visit reports, raw

data results, and statistical methodology are located in the administrative record for this

rulemaking. EPA used these data to calculate effluent limitations for BOD and TSS for the

Barge/Chemical & Petroleum Subcategory as discussed in the Final Statistical Support Document

(14).

EPA also received 17 comment submissions on the Notice of Availability (NOA). 

From these comments, EPA obtained additional self-monitoring data for truck/chemical facilities

from one commenter. These data were more representative of the effluent levels at a facility over

a much longer period than was represented by EPA’s original data set. Therefore, these data

were used to calculate final limitations. EPA used the data from one Truck/Chemical &

Petroleum Subcategory facility for the calculation of variability factors for copper and mercury. 

The complete data set, including lab reports and certified monitoring reports, can be found in

Section 15.2.2 in the administrative record for this rulemaking.
Section 3.0 - Data Collection Activities

3-28

3.6 Existing Data Sources

In developing the TECI effluent guidelines, EPA evaluated the following existing

data sources:

C The Office of Research and Development (ORD) Risk Reduction

Engineering Laboratory (RREL) treatability database; 

C The Fate of Priority Pollutants in Publicly Owned Treatment Works (50

POTW Study) database;

C Lists of potential TEC facilities from state and local agencies;

C EPA's Permit Compliance System and Industrial Facilities Discharge and

Databases; and

C U.S. Navy bilge wastewater characterization data.

These data sources and their uses for the development of the TECI effluent guidelines are

discussed below.

3.6.1 EPA's Risk Reduction Engineering Laboratory Treatability Database

EPA's Office of Research and Development (ORD) developed the Risk Reduction

Engineering Laboratory (RREL) treatability database to provide data on the removal and

destruction of chemicals in various types of media, including water, soil, debris, sludge, and

sediment. One component of the RREL database is treatability data from POTWs for various

pollutants. This database includes physical and chemical data for each pollutant, the types of

treatment used to treat the specific pollutants (predominantly activated sludge and aerobic

lagoons for POTWs), the type of media treated (domestic wastewater for POTWs), the scale of

the treatment system (i.e., full-, pilot-, or bench-scale), treatment concentrations achieved,

treatment efficiency, and source of treatment data. EPA used this database to assess removal by

POTWs of TECI pollutants of interest and to select pollutants to be regulated (see Section 12.0).
Section 3.0 - Data Collection Activities

3-29

3.6.2 EPA's Fate of Priority Pollutants in Publicly Owned Treatment Works

Database

In September 1982, EPA published the Fate of Priority Pollutants in Publicly

Owned Treatment Works (15), referred to as the 50 POTW Study. The purpose of this study was

to generate, compile, and report data on the occurrence and fate of the 129 priority pollutants in

50 POTWs. The report presents all the data collected, the results of preliminary evaluations of

these data, and the results of calculations to determine the following:

C The quantity of priority pollutants in the influent to POTWs;

C The quantity of priority pollutants discharged from POTWs;

C The quantity of priority pollutants in the effluent from intermediate process

streams; and

C The quantity of priority pollutants in the POTW sludge streams.

EPA used the data from this study to assess removal by POTWs of TECI pollutants of concern.

3.6.3 State and Local Agencies

A number of state and local agencies provided the Agency with lists of facilities

within their jurisdiction that directly discharge wastewaters and were identified as either

performing TEC operations or reporting under an SIC code for facilities that own and/or operate

transportation equipment. The following agencies supplied lists of potential TEC facilities: 

Alabama Department of Environmental Management, Baton Rouge Department of Public Works,

City of Houston Industrial Wastewater Service, Kentucky Department of Environmental

Protection, Metropolitan Water Reclamation District of Chicago, and State of Mississippi

Permitted Facilities.
Section 3.0 - Data Collection Activities

3-30

3.6.4 EPA's Permit Compliance System and Industrial Facilities Discharge

Databases

The Agency searched the Permit Compliance System (PCS) and the Industrial

Facilities Discharge (IFD) databases to identify facilities that potentially perform TEC operations

(see Section 3.2.1). These databases identify facilities that discharge wastewater by four-digit

SIC code. Facilities in SIC codes potentially applicable to the TECI were entered into the TECI

site identification database.

3.6.5 U.S. Navy Bilge Wastewater Characterization Data

Several facilities in the Barge/Chemical & Petroleum Subcategory for which

compliance costs were estimated commingle non-TEC wastewater with TEC wastewater prior to

treatment. The non-TEC wastewater of concern consists primarily of marine wastewaters such as

bilge wastewater and ship-building wastewater. The U.S. Navy published a report titled “The

Characterization of Bilge Water Aboard Navy Ships.” EPA reviewed the report for bilge

wastewater characterization data and determined that these data were appropriate for use in

characterizing marine wastewater streams treated by facilities in the Barge/Chemical & Petroleum

Subcategory. A detailed description of the source of the bilge wastewater data and EPA's

rationale for transfer of the data to the TECI effluent guidelines development effort is provided in

reference 16.

3.7 Summary of Publicly Owned Treatment Works Data

In October 1993 the Association of Metropolitan Sewerage Authorities (AMSA)

provided EPA with data from POTW members on industrial users that conducted TEC operations

in 1992. The POTWs provided the following information: (1) POTW contact, location, and

limits; (2) industrial user information including TEC facility contact, location, average wastewater

discharged in gallons per day, and the types of TEC operations performed; (3) industrial user

sampling point information; (4) industrial user treatment technologies employed; (5) industrial
Section 3.0 - Data Collection Activities

For those references included in the administrative record supporting the TECI rulemaking, the document control 1

number (DCN) is included in parentheses at the end of the reference.

3-31

user pollution prevention practices; and (6) industrial user sampling data collected by the POTW

or the industrial user.

EPA considered using the AMSA data as a source in developing the TECI site

identification database (see Section 3.2.1); however, because the AMSA data were not received

until after the TECI site identification database was finalized, EPA decided not to use these data

in developing the database. In addition, the sampling data were not used because very little

sampling data were provided and because influent and effluent data were not paired, precluding

use to determine treatment performance efficiencies. For these reasons, EPA decided not to use

the AMSA data in the development of the final rule.

3.8 References1

1. U.S. Environmental Protection Agency, Office of Water Regulations and

Standards. Preliminary Data Summary for the Transportation Equipment Cleaning

Industry. EPA 440/1-89/104, September 1989 (DCN T10201).

2. U.S. Environmental Protection Agency, Office of Water Regulations and

Standards, February 1986, Report to Congress on the Discharge of Hazardous

Wastes to Publicly-Owned Treatment Works (referred to as the Domestic Sewage

Study “DSS”).

3. Cochran, W.S. Sampling Techniques. John Wiley & Sons, 1977. p. 108.

4. Eastern Research Group, Inc., Development of Survey Weights for the U.S.

Environmental Protection Agency Tank and Container Interior Cleaning Screener

Questionnaire. May 15, 1998 (DCN T11000).

5. Radian Corporation. Transportation Equipment Cleaning Industry (TECI) Tank

and Aircraft Screener Database Postings. Memorandum from Debbie Falatko,

Radian Corp., to Gina Matthews, U.S. EPA, June 30, 1995 (DCN T10269).

6. Science Applications International Corporation (SAIC). Final Transportation

Equipment Cleaning Industry Detailed Questionnaire Sample Design Report. 

May, 1998 (DCN T11100).
Section 3.0 - Data Collection Activities

3-32

7. U.S. Environmental Protection Agency. Information Collection Request, 1994

Detailed Questionnaire for the Transportation Equipment Cleaning Industry. 

November 1994 (DCN T09843).

8. U.S. Environmental Protection Agency. Economic Analysis of Final Effluent

Limitations Guidelines and Standards for the Transportation Equipment Cleaning

Category. EPA 821-R-00-013, June 2000.

9. Radian Corporation. TEC Questionnaire Part A Coding/Review Checklist. 

September 12, 1995 (DCN T10249).

10. Eastern Research Group, Inc. Data Element Dictionary for Part A of the U.S.

Environmental Protection Agency 1994 Detailed Questionnaire for the

Transportation Equipment Cleaning Industry. April 4, 1997 (DCN T10271).

11. SAIC. Statistical Methods for Calculating National Estimates. May 1998 (DCN

T11101).

12. Radian Corporation. Draft Quality Assurance Project Plan for the Transportation

Equipment Cleaning Industry. January 19, 1995 (DCN T10233).

13. Viar and Company. EAD Sampling Guide. June 1991 (DCN T10218).

14. U.S. Environmental Protection Agency. Statistical Support Document of Final

Effluent Limitations Guidelines and Standards for the Transportation Equipment

Cleaning Category. June 2000 (DCN 20636).

15. U.S. Environmental Protection Agency. Fate of Priority Pollutant in PubliclyOwned Treatment Works. EPA 440/1-82/303, September 1982 (DCN T10311).

16. Eastern Research Group, Inc. Development of Transportation Equipment

Cleaning Industry Production Normalized Pollutant Loadings. Memorandum from

Grace Kitzmiller, Eastern Research Group, Inc. to the TECI Rulemaking Record. 

May 6, 1998 (DCN T09981).
Section 3.0 - Data Collection Activities

3-33

Table 3-1

Major Sources Used to Identify Potential TEC Facilities by

Tank Type and Business Operational Structure

Tank Trucks, Closed-Top Hopper

Trucks, Intermodal Tank Containers, Rail Tank Cars and Closed- Tank Barges, Closed-Top Hopper Transfer Facilities (Multiple

and Intermediate Bulk Containers Top Hopper Rail Cars Barges, and Ocean/Sea Tankers Modes of Transportation)

Independent Modern Bulk Transporter, 1993 Tank 1993 Repair Car Directory 1993 Inland River Guide Modern Bulk Transporter, 1993

Cleaners Directory 1992 Pocket List of Railroad Dun & Bradstreet Tank Cleaners Directory

Modern Bulk Transporter, 1993 Tank Officials 1993 American Waterways Shipyard 1993 Inland River Guide

Trailer Repair Directory Dun & Bradstreet Conference Shipyard Services

Dun & Bradstreet Directory

Carrier Dun & Bradstreet Dun & Bradstreet Dun & Bradstreet 1993 National Motor Carriers

1993 National Motor Carriers Directory 1993 Inland River Guide Directory

Modern Bulk Transporter, 1993 Tank 1993 Industrial and Hazardous Waste Modern Bulk Transporter, 1992

Cleaners Directory Transporters Bulk Transfer Directory

Modern Bulk Transporter, 1992 Tank

Container Depot Directory

Shipper TRINC Users File 1992 Pocket List of Railroad Dun & Bradstreet TRINC Users File

1993 Private Fleet Directory Officials 1992 Pocket List of Railroad

1993 Private Fleet Directory Officials

TRINC Users File 1993 National Motor Carriers

Directory

Builder/Leaser Modern Bulk Transporter, 1993 Tank 1992 Pocket List of Railroad 1993 Inland River Guide Modern Bulk Transporter, 1993

Trailer Repair Directory Officials Tank Trailer Repair Directory

Union Tank Car List of Facilities
Section 3.0 - Data Collection Activities

3-34

Table 3-2

Sources Used to Identify Potential TEC Facilities

Source Assurance Source Code

Level of

Potential Tank Barge Cleaning Facilities

Telephone Contacts (All sources) high All

1993 Inland River Guide (Tank barge cleaning operations specifically high 14

identified)

1993 American Waterways Shipyard Conference (AWSC) Shipyard Services high 1

Directory (Tank barge cleaning operations specifically identified)

Metropolitan Water Reclamation District of Chicago List high 25

1993 Inland River Guide (Perform tank barge operations) medium 14

1993 AWSC Shipyard Services Directory (Perform tank barge operations) medium 1

Kentucky Department for Environmental Protection List medium 15

Dun and Bradstreet (Second order of SIC codes) (Assessed based on SIC code medium 12

descriptions)

Dun and Bradstreet (First order of SIC codes) (Assessed based on SIC codes medium 11

descriptions)

1993 Industrial and Hazardous Waste Transporters medium 13

TRINC Users File medium 23

Dun and Bradstreet (First order of SIC codes) (Assessed based on SIC code low 11

descriptions)

Dun and Bradstreet (Second order of SIC codes) (Assessed based on SIC code low 12

descriptions)

EPA's Permit Compliance System low 18

Potential Rail Tank Car Cleaning Facilities

1992 Pocket List of Railroad Officials high 19

Telephone Contacts (All sources) high All

Union Tank Car List of Facilities high 24

Repair Car Directory, February, 1993 high 21

Repair Car Directory, February, 1992 high 20

Modern Bulk Transporter, February, 1993, Tank Trailer Repair Directory high 5

1993 Industrial and Hazardous Waste Transporters medium 13

Alabama Department of Environmental Management List medium 3

Kentucky Department for Environmental Protection List medium 15

Mississippi Permitted Facilities medium 16
Table 3-2 (Continued)

Section 3.0 - Data Collection Activities

Source Assurance Source Code

Level of

3-35

Dun and Bradstreet (First order of SIC codes) (Assessed based on SIC code medium 11

descriptions)

Dun and Bradstreet (Second order of SIC codes) (Assessed based on SIC code medium 12

descriptions)

Dun and Bradstreet (First order of SIC codes) (Assessed based on SIC code low 11

descriptions)

Dun and Bradstreet (Second order of SIC codes) (Assessed based on SIC code low 12

descriptions)

EPA's Permit Compliance System low 18

Potential Transfer Facilities

1993 Inland River Guide high 14

Modern Bulk Transporter, December 1992, Bulk Transfer Directory high 6

Dun and Bradstreet (First order of SIC codes) (Assessed based on SIC code medium 11

descriptions)

Dun and Bradstreet (Second order of SIC codes) (Assessed based on SIC code medium 12

descriptions)

Dun and Bradstreet (First order of SIC codes) (Assessed based on SIC code low 11

descriptions)

Dun and Bradstreet (Second order of SIC codes) (Assessed based on SIC code low 12

descriptions)

EPA's Permit Compliance System low 18

Potential Tank Truck Cleaning Facilities

Telephone Contacts (All sources) high All

Modern Bulk Transporter, March 1993, Tank Cleaners Directory high 4

Modern Bulk Transporter, February 1993, Tank Trailer Repair Directory high 5

Modern Bulk Transporter, December 1992, Tank Container Depot Directory high 6

Modern Bulk Transporter, March 1992, Tank Cleaners Directory high 7

Modern Bulk Transporter, January 1992, Advertisement high 8

Modern Bulk Transporter, September 1992, Advertisement high 9

City of Houston Industrial Wastewater Service List high 26

Metropolitan Water Reclamation District of Chicago List high 25

1993 Industrial and Hazardous Waste Transporters medium 13

1993 National Motor Carriers Directory medium 17

TRINC Owners File medium 22

TRINC Users File (Facilities operate tank trucks) medium 23
Table 3-2 (Continued)

Section 3.0 - Data Collection Activities

Source Assurance Source Code

Level of

3-36

Alabama Department of Environmental Management List medium 3

Mississippi Permitted Facilities

Kentucky Department for Environmental Protection List medium 15

Dun and Bradstreet (Second order of SIC codes) (Assessed by SIC code medium 12

descriptions)

Dun and Bradstreet (First order of SIC codes) (Assessed by SIC code medium 11

descriptions)

1993 Private Fleet Directory low 2

TRINC Users File (Assessed by SIC code descriptions) low 23

Dun and Bradstreet (Second order of SIC codes) (Assessed by SIC code low 12

descriptions)

Dun and Bradstreet (First order of SIC codes) (Assessed by SIC code low 11

descriptions)

EPA's Permit Compliance System low 18
Section 3.0 - Data Collection Activities

3-37

Table 3-3

Original Screener Questionnaire Sample Frame and Distribution of Facilities in the TECI Screener

Questionnaire Mailing List by Facility Type and Level of Assurance

Level of Assurance

(Probability of

Performing TEC Aircraft Rail Tank Car Tank Barge Tank Truck Total

Operations) Segment (a) Cleaning Cleaning Cleaning Transfer Facilities Facilities

Facility Type

High 266 157 78 604 106 1,211

Medium 487 218 357 433 9 1,504

Low 7 30 114 1,133 1 1,285

TOTAL Facilities 760 405 549 2,170 116 4,000

(a) The Agency has postponed consideration of developing effluent limitations guidelines and standards for the aircraft segment. Data for the aircraft segment are

included only to describe the statistical sampling performed to develop the TECI site identification database and the TECI screener mailing list. 
Section 3.0 - Data Collection Activities

3-38

Table 3-4

Summary of TECI Screener Questionnaire Mail-Out and Follow-Up Activities

Activity Number of Facilities

Screeners mailed 3,269

Screeners remailed 184

Screeners returned undelivered 244

Follow-up letters mailed 450

Follow-up phone calls completed 755

Number of dry facilities 26

Screener responses received 2,963

In-scope responses 754

Helpline calls 698

Inactive facilities 268

Screeners unaccounted for 60
Section 3.0 - Data Collection Activities

3-39

Table 3-5

Final Screener Questionnaire Sample Frame Strata and Total Population

Estimates

Screener Number of In- Survey Estimated Total

Questionnaire Screener Questionnaire Scope Screener Weighting Number of Facilities

Strata Strata Code (Source) (a) Responses Factor in TECI

1 Census (multiple) 509 1.049 533.94

2 Barge-Low (1,12) 1 7.400 7.40

3 Truck-Low (2) 38 10.619 403.51

4 Transfer-Low (11,12,18) 1 9.500 9.50

5 Truck-Low (12) 11 8.762 96.38

6 Truck-Medium (12) 13 8.532 110.91

7 Truck-Medium (13); Non- 15 6.308 94.62

Census

8 Truck-Medium (17) 23 8.033 184.77

9 Rail-High (19) 63 2.093 131.86

10 Truck-Medium (22) 7 3.074 21.52

11 Truck-Low (23) 25 33.749 843.73

12 Truck-Medium (23) 17 17.272 293.62

13 Truck-Medium (13); Census 7 1.00 7.00

TOTAL 2,738.76

(a) Source code listed in Table 3-2.
Section 3.0 - Data Collection Activities

3-40

Table 3-6

Detailed Questionnaire Sample Frame and Distribution of Facilities in the

TECI Detailed Questionnaire Mailing List by Strata

Detailed Number of Facilities Selected for

Questionnaire Detailed Questionnaire Mailing

Strata Detailed Questionnaire Strata Code (Source) (a) List

1 Census - Barge; Census 4

2 Census - Barge; Random 16

3 Census - Land-Water; Census 9

4 Census - Rail; Census 9

5 Census - Rail; Random 11

6 Census - Truck-Land; Census 3

7 Census - Truck-Land; Random 75

8 Census - Tanker-Water; Census 6

9 Barge-Low (1,12); Nonshipper 1

10 Truck-Low (2); Nonshipper 8

11 Truck-Low (2); Shipper 12

12 Transfer-Low (11,12,18); Nonshipper 1

13 Truck-Low (12); Nonshipper 11

14 Truck-Medium (12); Nonshipper 12

15 Truck-Medium (13); Nonshipper; Random 15

16 Truck-Medium (13); Nonshipper; Census 7

17 Truck-Medium (17); Nonshipper 22

18 Rail-High (19); Nonshipper 18

19 Rail-High (19); Shipper 8

20 Rail-High (19); Shipper; Land-Water 3

21 Truck-Medium (22); Nonshipper 7

22 Truck-Low (23); Shipper 10

23 Truck-Medium (23); Shipper 7

TOTAL 275

(a) Source code listed in Table 3-2.
Section 3.0 - Data Collection Activities

3-41

Table 3-7

Summary of TECI Detailed Questionnaire Mail-Out and Follow-Up Activities

Activity Number of Facilities

Detailed Questionnaires Mailed 287

Reminder Phone Calls 156

Delinquent Response Phone Calls or Letters 75

Questionnaire Responses Received

— Part A 200

— Part B 195

Responses Received, Insufficient for Analyses

— Part A 1

— Part B 5

Out-of-Scope Responses 40 (3 Dry Facilities)

Helpline Calls 

— Part A 192 (477 Total Calls)

— Part B (161 Total Calls)

Follow-up Calls During Questionnaire Review

— Part A 171

— Part B 142
Section 3.0 - Data Collection Activities

3-42

Table 3-8

Detailed Questionnaire Sample Frame Strata and Weights

Detailed Questionnaire Survey Weighting

Strata Detailed Questionnaire Strata Code (Source) (a) Factor

1 Census - Barge; Census 1.31

2 Census - Barge; Random 2.10

3 Census - Land-Water; Census 1.05

4 Census - Rail; Census 1.05

5 Census - Rail; Random 4.86

6 Census - Truck-Land; Census 1.05

7 Census - Truck-Land; Random 5.37

8 Census - Tanker-Water; Census 1.05

9 Barge-Low (1,12); Nonshipper 7.40

10 Truck-Low (2); Nonshipper 10.62

11 Truck-Low (2); Shipper 25.66

12 Transfer-Low (11,12,18); Nonshipper 9.50

13 Truck-Low (12); Nonshipper 8.76

14 Truck-Medium (12); Nonshipper 8.53

15 Truck-Medium (13); Nonshipper; Random 6.31

16 Truck-Medium (13); Nonshipper; Census 1.00

17 Truck-Medium (17); Nonshipper 8.03

18 Rail-High (19); Nonshipper 2.09

19 Rail-High (19); Shipper 10.20

20 Rail-High (19); Shipper; Land-Water 2.09

21 Truck-Medium (22); Nonshipper 3.07

22 Truck-Low (23); Shipper 84.37

23 Truck-Medium (23); Shipper 41.95
Section 4.0 - Industry Description

 Does not include an additional estimated 10 facilities represented by a single nonrespondent. 1

4-1

4.0 INDUSTRY DESCRIPTION

The Transportation Equipment Cleaning Industry (TECI) includes facilities that

use water to clean the interiors of tank trucks, closed-top hopper trucks, intermodal tank

containers, rail tank cars, closed-top hopper rail cars, tank barges, closed-top hopper barges,

ocean/sea tankers, and other similar tanks (excluding intermediate bulk containers (IBCs) and

drums). This section describes and provides a profile of the TECI. Information presented in this

section is based on data provided by facilities in response to the Detailed Questionnaire (1) and

obtained by EPA’s site visit and sampling programs. The Detailed Questionnaire database (2)

includes information necessary to develop an industry profile, characterize transportation

equipment cleaning (TEC) processes, and perform an industry subcategorization analysis. Note

that the data contained in the Detailed Questionnaire database reflect TECI operations in calendar

year 1994. 

Information presented in this section is based on operations performed by the

estimated total TECI population of 1,229 facilities. This total includes an estimated 692 1

discharging facilities and 537 zero discharge facilities. 1

4.1 Operational Structure

The TECI is characterized by four business operational segments: independents,

carriers, shippers, and builder/leasers. Independent facilities provide commercial cleaning

services, either as a primary or secondary business, for tanks that they do not own or operate. 

Carrier-operated facilities, or “for-hire facilities,” own, operate, and clean tank fleets used to

transport cargos for other companies. Shipper-operated facilities transport their own cargos or

engage carriers to transport their cargos, and clean the fleets used for such transport. Builder/

leaser facilities manufacture and/or lease tanks, and clean the interiors of these tanks after
Section 4.0 - Industry Description

4-2

equipment has been placed in service. Since transportation facilities may perform a variety of

business operations, TEC facilities may be classified under more than one operational segment.

The TECI is additionally classified based on the relationship between the cleaning

facility and the customer: commercial and in-house. The first category, commercial facilities,

includes independent tank wash facilities and builder/leaser-operated facilities, at which customers

pay a fee for tank cleaning. The second category comprises shipper-operated or carrier-operated

facilities that provide tank cleaning facilities to support in-house operations. These facilities are

considered private because tank cleaning services may not be offered to nonaffiliated

transportation equipment.

Approximately two-thirds of the TECI are shipper-operated or carrier-operated

facilities that provide tank cleaning services to support in-house operations. Tank trucks and rail

tank cars that last transported food grade products are most likely to be cleaned by in-house

facilities because these tanks usually transport the same cargos for the same food processing

facility and because quality control measures are more stringent for cleaning food-grade tanks. In

contrast, tank and hopper barges are typically cleaned by independent tank wash facilities located

on their travel routes, because these carriers usually transport cargos in both directions to

maximize their large capacities and minimize the effects of the slower travel. 

4.2 Cleaning Purpose

Tank and container interiors are cleaned for two primary purposes: (1) to prevent

contamination of materials from one cargo shipment to the next and (2) to facilitate inspection

and repair. Facility responses to the Detailed Questionnaire indicate that tanks are used to

transport more than 700 unique cargos. Tanks that are not in dedicated service (i.e., tanks that

carry a variety of products) are generally cleaned before each product changeover to prevent

contamination of the new cargo. Some tanks in dedicated service also require cleaning to prevent

contamination of subsequent cargos if product purity is a concern, such as for certain process
Section 4.0 - Industry Description

4-3

chemicals and food products, including milk, vegetable oils, molasses, and corn syrup. Sections

4.4 and 4.5 discuss in detail the tank types and cargo types cleaned, respectively.

Tank interiors are also cleaned to facilitate internal inspection of the tank and/or

inspection of fittings and valves that may be required as part of a routine inspection and

maintenance program. In addition, the interior of the tank must be rendered nonexplosive and

nonflammable through a cleaning process called “gas-freeing” to provide a safe environment for

manual cleaning and for tank repairs that require “hot work” (e.g., welding or cutting).

4.3 TEC Operations

Although different types of tanks are cleaned in various manners, the basic

cleaning process for each tank is similar. A typical sequence is as follows:

C Review shipping manifest forms to determine the cargo last transported in

the tank;

C Determine the next cargo to be transported in the tank;

C Drain the tank heel (residual product) and, if necessary, segregate the heel

for off-site disposal;

C Rinse the tank with water;

C Wash the tank using one or more cleaning methods and solutions;

C Rinse the tank with water; and

C Dry the tank.

Figure 4-1 illustrates the general TEC processes performed. The following paragraphs further

describe these processes.
Section 4.0 - Industry Description

4-4

The cleaning facility determines the cargo last transported in the tank to: 

(1) assess the facility's ability to clean the tank efficiently; (2) determine the appropriate cleaning

sequence and cleaning solutions; (3) evaluate whether the residue cleaned from the tank will be

compatible with the facility's wastewater treatment system; and (4) establish an appropriate level

of health and safety protection for the employees who will clean the tank. The next cargo to be

transported in the tank is identified to determine if the available level of cleaning at the facility is

adequate to prevent contamination of the next cargo. The facility may decide to reject a tank

based on any of the preceding concerns. 

Once a tank has been accepted for cleaning, the facility checks the volume of heel

(residual cargo) in the tank and determines an appropriate heel disposal method. Any watersoluble heels that are compatible with the facility's treatment system and the conditions of the

facility's wastewater discharge permit are usually combined with other wastewaters for treatment

and discharge at the facility. Incompatible heels are segregated into drums or tanks for disposal

or reuse by alternative means, which may include reuse on site, return to the consignee, sale to a

reclamation facility, landfilling, or incineration. The TEC facility may reuse heels comprising

soaps, detergents, solvents, acids, or alkalis as tank cleaning solutions or as neutralizers for future

heels and for wastewater treatment. Section 4.6 discusses heel removal and disposal in detail.

Cleaning processes vary among facilities depending on available cleaning

equipment and the cargos last transported in the tanks to be cleaned. Certain residual materials

(such as sugar) only require a water rinse, while other residual materials (such as latexes or resins)

require a detergent or strong caustic solution followed by a final water rinse. Other cleaning

processes include presolve (application of solvent or diesel to the tank interior for cargos that are

difficult to remove), steam cleaning, and forced air drying. The state of the product last

transported in the tank affects the cleaning processes used. For example, hardened or caked-on

products sometimes require an extended processing time. Some tanks require manual cleaning

with scouring pads, shovels, or razor blades to remove residual materials. The cleaning of tanks

used to transport gases or volatile material sometimes requires filling the tank to capacity with
Section 4.0 - Industry Description

4-5

water to displace vapors, followed by flushing of the wastewater. Section 4.7 discusses chemical

cleaning solutions in detail.

Tanks are typically washed using one of two methods: (1) low- or high-pressure

spinner nozzles or (2) hand-held wands and nozzles. Spinner nozzles, which are inserted through

the main tank hatch, operate at pressures between 100 pounds per square inch (psi) and 600 psi to

deliver hot or cold water rinses and a variety of cleaning solutions. They are designed to rotate

around both their vertical and horizontal axes to create an overlapping spray pattern that cleans

the entire interior of the tank. Operating cycles range from rinse bursts of a few seconds to

recirculating detergent or caustic washes of 20 minutes or longer for caked or crystallized

residues. Washing with hand-held wands and nozzles achieves the same result as with highpressure spinner nozzles, but requires facility personnel to manually direct the wash solution

across the interior surface of the tank. 

After cleaning, tanks may be dried by applying ambient or heated air using a

blower. Cleaning personnel may enter and inspect tank interiors and perform manual cleaning as

required. Valves, fittings, and other tank components may be removed and cleaned by hand. 

Hoses are generally cleaned in a separate hose bath using the same cleaning solutions as those

used to clean tank interiors.

4.3.1 Tank and Hopper Truck, IBC, and Intermodal Tank Container Cleaning

Tank trucks, IBCs, and intermodal tank containers are generally considered empty

when they arrive at the facility, but may contain between one quart and twenty gallons of heel

(typically less than 1% of tank capacity). Closed-top hopper trucks generally contain less than

five pounds of residual material. Tank interior cleaning is typically performed in wash racks (or

cleaning bays), but may also be performed in designated wash areas that are not constructed

specifically for tank interior cleaning. Tank exterior cleaning is often performed in the same wash

racks with the wastewater commingled with tank interior cleaning wastewater. Facilities may

have separate, dedicated cleaning bays, cleaning solutions, and equipment for cleaning tanks that
Section 4.0 - Industry Description

4-6

previously contained chemical and food grade cargos. On average, tank and hopper truck, IBC,

or intermodal tank container cleaning requires two hours: one-half hour for equipment handling

(i.e., moving the tank in and out of the cleaning bay and preparation for cleaning), and one and

one-half hours for cleaning, which includes visual inspection and any manual cleaning.

4.3.2 Rail Tank and Hopper Car Cleaning

Rail tank cars are generally considered empty when they arrive at the facility, but 

cars typically contain approximately 60 gallons of heel (typically less than 1% of tank capacity). 

Rail tank and hopper car cleaning processes are similar to the processes used for tank and hopper

truck cleaning described above; however, rail cars are more likely to be cleaned using steam rather

than caustic or detergent cleaning solutions. Rail car exteriors are less likely to be cleaned. Of

particular concern during rail tank car cleaning is the potential to damage the interior tank lining,

which is designed to protect the tank wall from corrosion by the tank contents. 

4.3.3 Tank and Hopper Barge and Ocean/Sea Tanker Cleaning

Tank barges are generally considered empty when they arrive at the facility, but

typically contain approximately 1,000 gallons of heel (typically less than 1% of tank capacity). 

Tank barge cleaning facilities typically perform six basic operations: strip liquid free, strip and

blow, clean for a Marine Chemist's Certificate, cold water manual wash, cold water Butterworth®

(low-pressure, high-volume spinner) wash, and hot water Butterworth wash. Depending on the ®

specifications of the cleaning request, any one of these operations is performed or repeated, and

cleaning solutions may be used. The most common cleaning operation involves heel stripping

followed by a Butterworth wash and rinse. Heel, wash, and rinse waters are removed from the ®

tanks using vacuum pumps. The barge is then certified for entry by a Marine Chemist and facility

personnel enter the tanks to inspect the interior. If necessary, a manual wash is performed. 

Cleaning time for tank barges typically ranges from four to eight hours. 
Section 4.0 - Industry Description

4-7

Hopper barges require more manual cleaning than tank barges because of the

dense nature of the dry bulk cargos last transported. Hopper barges have covers that are easily

removed by a crane to facilitate tank entry by personnel and equipment, and eliminate confinedspace entry concerns. Typically, a skid loader (e.g., Bobcat ) is lowered by crane into the barge ®

and collects the heel into a large container. The skid loader and container are then removed and

personnel manually wash the inside of the barge using a high-pressure, high-volume fire hose. 

Wash water is continually stripped from the barge using a vacuum pump. The barge may then be

inspected by a grain inspector.

The cleaning operations performed for ocean/sea tankers are similar to those of

tank barges, although larger in scale. Cargo hold interiors are predominantly cleaned at sea by the

tanker crew, with wastewater either discharged shore side at ballast water treatment facilities or at

sea within the provisions of the International Convention for the Prevention of Pollution by Ships

(MARPOL). A relatively small percentage of cargo hold interiors are cleaned shore side to

facilitate inspection and repair and are performed concurrently with ballast tank and bunker (fuel)

tank cleanings.

4.3.4 Special Cleaning Processes

Tanks (particularly tank trucks) that last contained food grade products such as

corn and sugar sweeteners, juice, and chocolate are typically cleaned using a computer operated

and controlled washing system, which regulates the cleaning equipment for each step in the

selected cleaning sequence, including flow rate, pressure, temperature, and cleaning sequence

duration. The cleaning process is performed in dedicated food grade cleaning bays equipped with

stainless steel cleaning equipment. A hot water wash is performed according to standards

adopted by the Coca-Cola Company , which require certification that each tank has been washed ©

and sanitized at a temperature of at least 180EF for a minimum of 15 minutes as measured by the

temperature of the wash water exiting the tank. The system includes a temperature chart to

continuously record the temperature of the recirculating wash water and generates a cleaning
Section 4.0 - Industry Description

4-8

ticket for each tank certifying that the temperature and time requirements have been met. The

specification requires tank recleaning if not loaded within 24 hours of certification.

4.4 Tank Types Cleaned

Facilities responding to the TECI Detailed Questionnaire reported cleaning nine

primary tank types. These nine tank types can be subdivided into a total of 34 tank classifications

by tank capacity; however, only the primary tank type classifications were considered for this

discussion. The table below lists each of the nine primary tank types and number cleaned. A

definition of these tank types is located in the glossary in Section 15.0.

Tank Type Per Year of Tank Cleanings (%)

Number of Cleanings Percentage of Total Number

Tank Truck (T) 2,110,000 87

Intermediate Bulk Container (IBC) 84,500 3

Intermodal Tank Container (IM) 81,500 3

Closed-Top Hopper Truck (TH) 65,500 3

Rail Tank Car (R) 49,700 2

Ocean/Sea Tanker (NT) 14,800 <1

Closed-Top Hopper Barge (BH) 12,600 <1

Closed-Top Hopper Rail Car (RH) 8,990 <1

Tank Barge (B) 8,960 <1

TOTAL (a) 2,440,000 100

(a) Differences occur due to rounding.

The majority of facilities in the TECI reported cleaning only one primary tank type;

however, a total of twenty tank types and combinations of tank types were reported to be cleaned

by facilities in the TECI. The distribution of tank types cleaned is summarized below.
Section 4.0 - Industry Description

4-9

Facility Group Group the TECI (%)

Total Number of Facilities in Percentage of Total Facilities in

Facilities that clean only one primary tank 913 74

type (e.g., T only, R only)

Facilities that clean both tanks and closed- 142 12

top hoppers within the same mode of

transport only (e.g., T and TH, R and RH)

Facilities that clean tank types with multiple 13 1

modes of transport (e.g., T and R, R and B)

Facilities that clean miscellaneous 160 13

combinations of tank types (i.e., no

apparent tank type trends)

TOTAL (a) 1,229 100

(a) Differences occur due to rounding.

This distribution demonstrates that the TECI is mostly characterized by facilities

that clean only one primary tank type. Of the 913 facilities that clean only one primary tank type,

73% clean only tank trucks and 11% clean only rail tank cars. The remaining 16% of facilities

clean, in descending order by percentage of facilities, intermediate bulk containers, closed-top

hopper trucks, tank barges, closed-top hopper barges, and ocean/sea tankers. This distribution

corresponds closely to the total number of each type of tank cleaned. The Agency did not identify

any facilities that clean only either intermodal tank containers or closed-top hopper rail cars.

For facilities that clean both tanks and closed-top hoppers within the same mode of

transport (e.g., T and TH, R and RH, or B and BH), the percentage of tank cleanings performed

versus hopper cleanings performed was estimated. At 94% of the facilities that clean both tank

trucks and closed-top hopper trucks, tank truck cleanings account for at least 75% of all cleanings

performed. For the remaining 6% of facilities, hopper truck cleanings account for more than 99%

of all cleanings performed. At 91% of facilities that clean both rail tank cars and closed-top rail

hopper cars, rail tank car cleanings typically account for greater than 60% of all cleanings

performed. For the remaining 9% of facilities, rail hopper car cleanings account for nearly 86% of

all cleanings performed. For facilities that clean both tank barges and closed-top hopper barges,

tank barge cleanings comprise less than 1% of all cleanings performed. These distributions
Section 4.0 - Industry Description

4-10

suggest that facilities that clean both tanks and closed-top hoppers typically clean either

predominantly tanks or predominantly closed-top hoppers.

Only 1% of the TECI consists of facilities that clean tank types within multiple

modes of transportation and 13% cleans combinations of tank types. Of the 13%, all of these

facilities clean tank trucks and some combination of intermediate bulk containers and/or

intermodal tank containers. Some of these facilities also clean a relatively small percentage of

closed-top hopper trucks.

4.5 Cargo Types Cleaned

Facilities responding to the TECI detailed questionnaire reported cleaning 15

general cargo types listed below. Appendix A of the Detailed Questionnaire contains a more

detailed description of these cargo types.

C Group A - Food Grade Products, Beverages, and Animal and Vegetable

Oils;

C Group B - Petroleum and Coal Products;

C Group C - Latex, Rubber, and Resins;

C Group D - Soaps and Detergent;

C Group E - Biodegradable Organic Chemicals;

C Group F - Refractory (Nonbiodegradable) Organic Chemicals;

C Group G - Inorganic Chemicals;

C Group H - Agricultural Chemicals and Fertilizers;

C Group I - Chemical Products;

C Group J - Hazardous Waste (as defined by RCRA in 40 CFR Part 261);

C Group K - Nonhazardous Waste;
Section 4.0 - Industry Description

4-11

C Group L - Dry Bulk Cargos; and

C Group M, N, and O - Other (Not Elsewhere Classified).

Table 4-1 lists the number of tanks cleaned by the industry by cargo type. 

Figure 4-2 illustrates the distribution of TEC facilities by the number of cargo

types cleaned. As demonstrated by this distribution, the TECI is characterized by facilities that

clean either a single cargo type (48%) or a variety of cargo types (52%). 

The distribution of the facilities that clean a single cargo type is presented in Table

4-2. Of the facilities that reported cleaning only one cargo type, 81% clean either food grade

products, beverages, and animal and vegetable oils (65%) or petroleum and coal products (16%). 

Facilities that reported cleaning only “other” cargos (Groups M, N, and O) comprise 10% of

facilities that clean a single cargo type. Over half of these facilities that clean only “other” cargos

clean tanks that last contained drilling mud, drilling fluids, salt water, or frac-sand mix from oil

well drilling operations.

A cursory review of the facilities that clean two or more cargo types suggests no

apparent trends of cargo types cleaned, but rather a wide variety of combinations of “chemicaltype” cargos.

4.6 Heel Removal and Disposal

As noted in Section 4.3, heel is residual cargo remaining in a tank or container

following unloading, delivery, or discharge of the transported cargo. The amount of heel

removed per tank cleaning depends primarily on the type of tank being cleaned. Other significant

factors that impact residual heel volume include cargo viscosity, tank internal construction, tank

offloading system design, and consignee tank offloading system design. Table 4-3 provides a

detailed analysis of the average volume of heel removed per tank cleaning by cargo group and
Section 4.0 - Industry Description

4-12

tank type. (Note that ocean/sea tankers are not included in this analysis because that group of

tankers is represented by only one Detailed Questionnaire response and because the facility that

responded reported that no heel was removed from tanks cleaned). As shown in the table, tank

barges contain the largest amount of heel of all the tank types due to their large capacities. On

average, tank trucks, intermediate bulk containers, and intermodal tank containers contain less

than 10 gallons of heel and rail cars contain approximately 60 gallons of heel.

Listed below are the 10 discharge or disposal methods for heels reported in

responses to the Detailed Questionnaire:

C Discharged with tank cleaning wastewater (WW);

C Discharged or hauled separately from tank cleaning wastewater to a

treatment works (ID);

C Evaporation (EV);

C On-site or off-site land disposal (LD);

C On-site or off-site land application (LA);

C On-site or off-site incineration (IN);

C On-site or off-site heat recovery (HR);

C On-site or off-site reuse or recycle (RR);

C Deep well injection (DW); and

C Discharged or hauled separately from tank cleaning wastewater to a

hazardous waste treatment, storage, and disposal facility (HD).

Table 4-4 provides a distribution of the total volume of heel discharged or

disposed in 1994 by cargo group and by discharge/disposal method. As shown in the table, the

largest volume of heel (58%) is reused or recycled on or off site. The largest percentage of

reused or recycled heel consists of food grade products, petroleum and coal products, organic and
Section 4.0 - Industry Description

4-13

inorganic chemicals, and chemical products. Food grade products heel is often reused as animal

feed; petroleum and coal products heel is typically sold for product recovery. The second largest

volume of heel (15%) is land disposed; petroleum and coal products heel and dry bulk cargos heel

comprise 82% of heel that is land disposed.

Twelve percent of the total heel removed by the TECI is discharged with tank

interior cleaning wastewater and comprises primarily inorganic chemical products, food grade

products, and latex, rubber, and resin heels. Land application, deep well injection, and

incineration are used to dispose less than 2% of the total volume of heel removed.

Many facilities implement measures to reduce the amount of heel received. Of the

1,229 facilities in the TECI, 589 facilities (48% of the population) reported practicing one or

more heel minimization measures. The most commonly practiced of these measures is to refuse

or reject tanks for cleaning if excessive heel is present. Some facilities charge an extra fee per

weight or volume of heel received as an incentive to tank owners to minimize heel. Most TEC

facilities maintain good communications with their customers, and drivers are instructed to inspect

all tanks to ensure complete product offloading and to eliminate the need to reject tanks for

cleaning or to assess extra fees.

4.7 Chemical Cleaning Solutions

As noted in Section 4.3, many cargo types require the use of chemical cleaning

solutions in the tank cleaning process. Responses to the Detailed Questionnaire indicate that

facilities typically use four types of chemical cleaning solutions: (1) acid solution; (2) caustic

solution; (3) detergent solution; and (4) presolve solution. Acid solutions most commonly used

by TEC facilities are composed of hydrofluoric and/or phosphoric acid and water. In addition to

tank interior cleaning, these acid solutions are used as metal brighteners on aluminum and

stainless steel tank exteriors. Caustic solutions typically comprise a mixture of sodium hydroxide

and water in different proportions. The most common ingredients in detergent solutions are

sodium metasilicate and phosphate-based surfactants. Some facilities use off-the-shelf brands of
Section 4.0 - Industry Description

4-14

detergent solutions such as Tide , Arm & Hammer , and Pine Power . Often, concentrated ® ® ®

detergents (“boosters”) such as glycol ethers or esters are added to acid and caustic solutions to

improve their effectiveness. Presolve solutions usually consist of diesel fuel, kerosene, or some

other petroleum-based solvent. Other miscellaneous chemical cleaning solutions include

passivation agents (oxidation inhibitors), odor controllers such as citrus oils, and sanitizers; these

solutions are usually applied on a cargo-specific or tank-specific basis. Responses to the Detailed

Questionnaire indicate no obvious trends between the chemical cleaning solutions used and the

cargo types cleaned (i.e., each chemical cleaning solution category is reported as being used to

clean each cargo type noted in Section 4.5). The choice of chemical cleaning solutions used is

more likely a factor of wastewater treatment system compatibility, POTW limitations, facility

preference, and/or customer preference.

Of the 1,229 facilities in the TECI, 656 (53% of the population) reported using

one or more chemical cleaning solutions. The following table shows the number of facilities that

reported using each chemical cleaning solution.

Chemical Cleaning Solution Each Chemical Cleaning Solution (%)

Number of Facilities That Use Use Chemical Cleaning Solutions

Percentage of All Facilities That

Acid Solution 50 8

Caustic Solution 434 66

Detergent Solution 560 85

Presolve Solution 137 21

Other Chemical Cleaning Solution 134 20

As shown in the table, detergent solution is the most commonly used cleaning solution, used by

85% of all facilities that use chemical cleaning solutions. The second most commonly used

chemical cleaning solution is caustic solution, which is used by 66% of all facilities that use

chemical cleaning solutions. Acid solution is used by only 8% of all facilities that use chemical

cleaning solutions.
Section 4.0 - Industry Description

4-15

Chemical cleaning solutions are generally reused until they are no longer effective,

as determined by cleaning personnel. Make-up solution is periodically added to replace solution

lost in the final rinse or to boost efficacy. Spent cleaning solutions may be hauled off site for

disposal or discharged to the on-site wastewater treatment system, if compatible. Of the 656

facilities that reported using chemical cleaning solutions, 84% discharge one or more cleaning

solutions to their on-site wastewater treatment systems, 59% of these facilities reuse their

cleaning solutions before discharge to wastewater treatment, and 16% send their cleaning

solutions off site.

4.8 Non-TEC Operations

In addition to tank interior cleaning, TEC facilities often perform other operations

that may generate wastewater. Some of these operations support transportation equipment

operations such as tank exterior cleaning, tank hydrostatic testing, and tank repair and

maintenance. Other facilities perform processing or manufacturing operations as their primary

business and use transportation equipment as a component of their primary business. The

following table shows the number of facilities that generate wastewater from each of the non-TEC

operations noted above.

Non-TEC Operation Facilities Population (%) (gallons per day)

Number of Percentage of Total Generation

Total Wastewater

Tank Exterior Cleaning 735 60 1,050,000

Processing and Manufacturing 368 30 62,400,000

Tank Hydrotesting 197 16 900,000

Tank Repair and Maintenance 94 7 6,920

Approximately 60% of facilities generate wastewater from tank exterior cleaning

activities. Tank exterior cleaning is usually performed at the same wash rack as tank interior

cleaning; therefore, nearly all tank exterior cleaning wastewater is commingled with TEC interior

cleaning wastewater prior to treatment. Exterior cleaning wastewater may be contaminated by

wastes from a variety of sources, including the cargos last transported in the tank, spent cleaning
Section 4.0 - Industry Description

4-16

solutions, exterior surface dirt, soot from engine exhaust, metals from the tank components

(including rust), and engine fluids (including fuel, hydraulic fluid, and oil). 

Processing and manufacturing operations are performed at nearly one third of

facilities and generate relatively large volumes of wastewater. These wastewaters are usually

treated and/or discharged together with tank interior cleaning wastewater due to their similar

composition. 

Tank hydrotesting (i.e., hydrostatic pressure testing), a DOT requirement, is

performed to determine the integrity of a tank and is a component of routine tank inspection. 

Since tanks are usually cleaned before hydrotesting, hydrotesting wastewater contains minimal

contaminants and is easily reused or recycled. 

Seven percent of facilities in the TECI reported generating wastewater from repair

and maintenance activities.

4.9 Geographic Profile

EPA performed a geographical mapping analysis of the Detailed Questionnaire

sample population of 142 facilities (discharging facilities plus zero discharge facilities). Note that

a simple geographical mapping of these facilities may not accurately represent the TECI because

each facility in the sample population has a unique statistical survey weight, ranging from 1.0489

to 87.6106, which is not reflected in the maps. The mapping analysis, however, may be

appropriate to identify geographic trends within the TECI. Figures 4-3 through 4-9 illustrate the

following facility geographic distributions:

C Figure 4-3: All Facilities;

C Figure 4-4: Truck Facilities;

C Figure 4-5: Rail Facilities;

C Figure 4-6: Barge Facilities;

C Figure 4-7: Chemical Facilities;
Section 4.0 - Industry Description

4-17

C Figure 4-8: Food Grade Facilities; and

C Figure 4-9: Petroleum Facilities.

As illustrated in Figure 4-3, TEC facilities are distributed primarily within the

industrial portions of the United States, with relatively high concentrations in the area between

Houston and New Orleans and within specific urban areas such as Los Angeles, Chicago, and St.

Louis. The distribution of truck facilities illustrated in Figure 4-4 mirrors the distribution of all

facilities illustrated in Figure 4-3. The distribution of rail facilities (illustrated in Figure 4-5)

shows lower concentrations in the area between Houston and New Orleans and higher

concentrations across eastern Texas as compared to Figure 4-3. As illustrated in Figure 4-6,

barge facilities are located along inland waterways of the United States (note the location of an

ocean/sea tanker cleaning facility in Florida). Presumably, differences among the geographical

distributions illustrated in Figures 4-4 through 4-6 indicate major thoroughfares by road, rail, and

inland waterway, respectively.

The distribution of chemical facilities illustrated in Figure 4-7 resembles the

distribution of all facilities illustrated in Figure 4-3 except for a relatively lower concentration of

facilities in the northwestern region of the United States. As illustrated in Figure 4-8, food grade

facilities are specifically not located within the area between Houston and New Orleans, and

appear to be located primarily within agricultural areas of the United States. The distribution of

petroleum facilities does not include a concentration of facilities within the area between Houston

and New Orleans, an area typically associated with the petroleum industry. A possible

explanation is that petroleum tanks are loaded in the Houston/New Orleans area for transport to

other regions of the United States; the tanks may then be cleaned in the local area of the

consignee. Another possible explanation is that pipelines rather than tanks are the primary mode

of petroleum product transportation in this area. 
Section 4.0 - Industry Description

For those references included in the administrative record supporting the TECI rulemaking, the document control 2

number (DCN) is included in parentheses at the end of the reference.

4-18

4.10 References2

1. U.S. Environmental Protection Agency. Information Collection Request, 1994

Detailed Questionnaire for the Transportation Equipment Cleaning Industry. 

November 1994 (DCN T09843).

2. Eastern Research Group, Inc. Data Element Dictionary for Part A of the U.S.

Environmental Protection Agency 1994 Detailed Questionnaire for the

Transportation Equipment Cleaning Industry Database. April 4, 1997 (DCN

T10271).
Section 4.0 - Industry Description

4-19

Table 4-1

Number of Tanks Cleaned by Cargo Type – Discharging and Zero Discharge

Facilities

Cargo Type Cleaned Per Year Tank Cleanings (%)

Number of Cleanings Percentage of Total Number of

Food Grade Products, Beverages, and Animal

and Vegetable Oils (A) 908,000 37

Petroleum and Coal Products (B) 214,000 9

Latex, Rubber, and Resin (C) 299,000 12

Soaps and Detergents (D) 87,100 4

Biodegradable Organic Chemicals (E) 137,000 6

Refractory (Nonbiodegradable) Organic

Chemicals (F) 15,500 1

Inorganic Chemicals (G) 106,000 4

Agricultural Chemicals and Fertilizers (H) 14,000 1

Chemical Products (I) 218,000 9

Hazardous Waste (J) 6,330 <1

Nonhazardous Waste (K) 12,100 <1

Dry Bulk Cargos (L) 36,900 2

Other (M, N, or O) 80,300 3

Not specified 305,000 13

TOTAL (a) 2,440,000 100

(a) Differences occur due to rounding.
Section 4.0 - Industry Description

4-20

Table 4-2

Distribution of Facilities That Clean a Single Cargo Type – Discharging and

Zero Discharge Facilities

Cargo Type Cleaned Number of Facilities (%)

Percentage of Facilities That

Clean Only This Cargo Type

Food Grade Products, Beverages, and Animal 385 65

and Vegetable Oils (A)

Petroleum and Coal Products (B) 96 16

Latex, Rubber, and Resins (C) (a) (a)

Soaps and Detergents (D) NC NC

Biodegradable Organic Chemicals (E) NC NC

Refractory (Nonbiodegradable) Organic NC NC

Chemicals (F)

Inorganic Chemicals (G) 11 2

Agricultural Chemicals and Fertilizers (H) 20 3

Chemical Products (I) NC NC

Hazardous Waste (J) NC NC

Nonhazardous Waste (K) NC NC

Dry Bulk Cargos (L) 22 4

Other (M, N, or O) 60 10

TOTAL (b) 596 100

(a) The data in this cell represents three or fewer facilities and therefore is not shown here due to confidential business

information and/or other data disclosure considerations.

(b) Differences occur due to rounding.

NC - Facilities with this characteristic were not identified by responses to the Detailed Questionnaire. Therefore, data

for these facilities, if facilities with these characteristics do indeed exist, are not available for this analysis.
Section 4.0 - Industry Description

4-21

Table 4-3

Average Volume of Heel Removed per Tank Cleaning by Cargo Group and Tank Type – Discharging and

Zero Discharge Facilities

Cargo Group Tank Rail Tank Barge Hopper Hopper Hopper Container Container

Tank Type (gallons of heel/tank)

Truck Tank Truck Rail Barge Bulk Tank

Intermediate Intermodal

Food Grade Products (A) 20 58 924 6 165 13 NC 2

Petroleum and Coal Products (B) 2 128 1050 1 (a) 166 <1 <1

Latex, Rubber, and Resin (C) 3 29 (a) <1 (a) NC 2 2

Soaps and Detergent (D) 2 51 NC <1 (a) NC 1 <1

Biodegradable Organic Chemicals (E) 2 27 868 <1 7 NC 0 <1

Refractory Organic Chemicals (F) <1 22 683 <1 NC NC NC 0

Inorganic Chemicals (G) 1 19 562 <1 337 NC <1 0

Agricultural Chemicals and Fertilizers (H) <1 49 364 <1 15 112 NC 0

Chemical Products (I) <1 35 616 NC (a) NC 0 <1

Hazardous Waste (J) <1 (a) NC NC NC NC NC NC

Nonhazardous Waste (K) 9 23 (a) NC NC NC NC 0

Dry Bulk Cargos (L) <1 6 NC 2 90 446 NC NC

(a) The data in this cell represents three or fewer facilities and therefore is not shown here due to confidential business information and/or other data disclosure

considerations.

NC - Facilities with this characteristic were not identified by responses to the Detailed Questionnaire. Therefore, data for these facilities, if facilities with these

characteristics do indeed exist, are not available for this analysis.
Section 4.0 - Industry Description

4-22

Table 4-4

Total Volume of Heel Discharged/Disposed by Cargo Group and Discharge/Disposal Method –

Discharging and Zero Discharge Facilities

Cargo Group WW ID EV LD LA IN HR RR DW HD

Heel Discharge/Disposal Method Code (gallons/year)

Food Grade Products (A) 591,000 109,000 NC 212,000 NC NC 16,200 4,510,000 NC 7,000

Petroleum and Coal Products (B) 206,000 45,900 NC 2,100,000 659 67,000 1,300,000 5,420,000 3,450 91,500

Latex, Rubber, and Resin (C) 320,000 40,100 NC 216,000 (a) 66,900 26,200 36,500 239 44,100

Soaps and Detergent (D) 35,400 37,200 NC 42,200 2,230 3,660 13,200 2,020 3,450 181,000

Biodegradable Organic Chemicals (E) 193,000 15,600 15,900 12,100 2,790 66,100 15,700 1,470,000 11,700 247,000

Refractory Organic Chemicals (F) 2,340 12,500 NC NC NC 26,800 (a) 166,000 NC 67,000

Inorganic Chemicals (G) 951,000 168,000 NC 27,800 (a) 717 NC 569,000 31,200 73,800

Agricultural Chemicals and Fertilizers (H) 222,000 NC NC 16,100 138 807 NC 150,000 NC 285

Chemical Products (I) 41,600 (a) NC 53,400 (a) 29,900 9,360 542,000 634 36,100

Hazardous Waste (J) NC NC NC NC NC 344 NC NC NC 22,200

Nonhazardous Waste (K) 15,000 NC NC 2,050 (a) NC NC NC 96 10,600

Dry Bulk Cargos (L) 2,160 64,400 NC 561,000 NC NC NC 1,360 96 (a)

(a) The data in this cell represents three or fewer facilities and therefore is not shown here due to confidential business information and/or other data disclosure

considerations.

NC - Facilities with this characteristic were not identified by responses to the Detailed Questionnaire. Therefore, data for these facilities, if facilities with these

characteristics do indeed exist, are not available for this analysis.
Acid

Solution

Caustic

Solution

Detergent

Solution

Boiler

Chemical-Grade Wash Rack

Heel

storage

Heel removal

Wastewater

storage tank

Wastewater

collection

High pressure-low

volume spinner

To wastewater treatment

Recycle/reuse

Vapor recovery system

Forced-air drying

Spent cleaning

solutions

Fresh

water

Source

water

Treated wastewater recycled

to source water

Cleaning solution

recirculation loop

Off-site disposal

- Hot or cold water wash

- Hot or cold water rinse

- Steam clean

- Presolve treatment

- Detergent wash

- Caustic wash

- Acid wash

Section 4.0 - Industry Description

4-23

Figure 4-1. Diagram of General TEC Operations
0 

100 

200 

300 

400 

500 

600 

1 2 3 4 5 6 7 8 9 10 11 12 13 14

Number of Cargo Types Cleaned

Section 4.0 - Industry Description

4-24

Figure 4-2. Distribution of TEC Facilities by Number of Cargo Types Cleaned –

Discharging and Zero Discharge Facilities
Section 4.0 - Industry Description

4-25

Figure 4-3. Geographic Profile of Discharging and Zero Discharge Facilities in the TECI

Detailed Questionnaire Sample Population
Section 4.0 - Industry Description

4-26

Figure 4-4. Geographic Profile of Discharging and Zero Discharge Truck Facilities in the

TECI Detailed Questionnaire Sample Population
Section 4.0 - Industry Description

4-27

Figure 4-5. Geographic Profile of Discharging and Zero Discharge Rail Facilities in the

TECI Detailed Questionnaire Sample Population
Section 4.0 - Industry Description

4-28

Figure 4-6. Geographic Profile of Discharging and Zero Discharge Barge Facilities in the

TECI Detailed Questionnaire Sample Population
Section 4.0 - Industry Description

4-29

Figure 4-7. Geographic Profile of Discharging and Zero Discharge Facilities in the TECI

Detailed Questionnaire Sample Population that Clean Chemical Cargos
Section 4.0 - Industry Description

4-30

Figure 4-8. Geographic Profile of Discharging and Zero Discharge Facilities in the TECI

Detailed Questionnaire Sample Population that Clean Food Grade Cargos
Section 4.0 - Industry Description

4-31

Figure 4-9. Geographic Profile of Discharging and Zero Discharge Facilities in the TECI

Detailed Questionnaire Sample Population that Clean Petroleum Cargos
Section 5.0 - Industry Subcategorization

5-1

5.0 INDUSTRY SUBCATEGORIZATION

The division of a point source category into groups called “subcategories”

provides a mechanism for addressing variations among products, raw materials, processes, and

other parameters that can result in distinct effluent characteristics. This provides each

subcategory with a uniform set of effluent limitations guidelines that take into account technology

achievability and economic impacts unique to that subcategory. In developing effluent limitations,

EPA assesses several factors including manufacturing processes, products, the size and age of the

facility, water use, and wastewater characteristics. The Transportation Equipment Cleaning

Industry (TECI), however, is not typical of many of the other industries regulated under the Clean

Water Act (CWA) because it does not produce a product. Therefore, EPA developed additional

factors that specifically address the characteristics of transportation equipment cleaning (TEC)

operations. Similarly, several factors typically considered for subcategorization of manufacturing

facilities were not considered applicable to this industry. For this rulemaking, EPA considered the

following factors:

C Cleaning processes (production processes);

C Tank type cleaned;

C Cargo type cleaned;

C Water use practices;

C Wastewater characteristics;

C Facility age;

C Facility size;

C Geographical location;

C Water pollution control technologies;

C Treatment costs; and

C Non-water quality environmental impacts.

After evaluating the above factors, EPA determined that subcategorization of the

TECI is necessary.
Section 5.0 - Industry Subcategorization

5-2

5.1 Factors Considered for Basis of Subcategorization

EPA considered a number of potential subcategorization approaches for the TECI. 

EPA used information collected during 44 engineering site visits, the Screener Questionnaire for

the TECI (1), and the Detailed Questionnaire for the TECI (2) to develop potential

subcategorization approaches. EPA considered eleven factors in developing its subcategorization

scheme for the TECI. A discussion of each is presented below, and a detailed analysis can be

found in the Subcategorization Analysis for the Transportation Equipment Cleaning Industry (3).

Consistent with other effluent guidelines subcategorization efforts, information

presented in this section is based on operations performed by the estimated total TECI population

of 1,229 facilities. This total includes an estimated 692 discharging facilities and 537 zero

discharge facilities. Section 3.2.3.4 further discusses these facilities.

5.1.1 Cleaning Processes (Production Processes)

EPA interpreted “production processes” to be the cleaning processes used by TEC

facilities. Section 4.3 describes TEC operations and the various methods used to clean tank

interiors. In summary, the cleaning process descriptions provided in Section 4.3 show the

following characteristics within the TECI:

1. Fundamental cleaning processes are the same for all tanks;

2. Use of chemical cleaning solutions versus solely water washes is dependent

upon the type of cargo cleaned;

3. Cleaning equipment includes either low- or high-pressure spinner nozzles

or hand-held wands and nozzles;

4. Heel volumes vary significantly depending on the type of tank cleaned;

5. Time required for tank cleaning varies significantly depending on the tank

type and cargo type cleaned;
Section 5.0 - Industry Subcategorization

5-3

6. Rail car cleaning processes are more likely to include steam cleaning than

truck or barge cleaning processes;

7. Hopper barge cleaning processes differ significantly from tank barge

cleaning processes; and

8. Cleaning processes for food grade cargos differ significantly from cleaning

processes for other cargo types.

Characteristics 1 and 3 were not considered bases for industry subcategorization

and were not evaluated further.

Characteristics 2 and 8 suggest potential subcategorization of the TECI based on

use of chemical solutions and/or type of cargo cleaned. EPA analyzed the use of chemical

cleaning solutions in the TECI and the relationship between the use of chemical cleaning solutions

and type of cargo cleaned in the TECI. Approximately 56% of TEC facilities use chemical

cleaning solutions in one or more of their cleaning processes. Facilities that clean a variety of

cargo types (i.e., five or greater) are more likely to use chemical cleaning solutions than facilities

that clean four or fewer cargo types. EPA further evaluated facilities that clean four or fewer

cargo types to identify trends based on specific cargo types cleaned. Significantly, only 4% of

facilities that clean only petroleum and coal products use chemical cleaning solutions. For the

remaining facilities grouped by cargo types cleaned, the use of chemical cleaning solutions is not a

distinguishing factor. 

Characteristics 4, 5, 6, and 7 suggest potential subcategorization of the TECI

based on the type of tank cleaned. However, characteristics 4 and 5 were not analyzed further

because these characteristics are not anticipated to result in distinct effluent characteristics. For

example, the volume of heel removed is primarily an indication of product offloading efficiency by

the consignee rather than an indication of the efficiency of heel removal (an associated water

pollution prevention practice) by the cleaning facility. The time required for cleaning is often an

indication of the duration of recirculating wash cycles, which generally do not generate

wastewater.
Section 5.0 - Industry Subcategorization

5-4

EPA evaluated the relationship between the predominant type of tank cleaned and

the use of chemical cleaning solutions. This analysis revealed that none of the facilities that clean

predominantly closed-top hoppers uses chemical cleaning solutions, indicating that these facilities

use significantly different cleaning processes than tank truck, rail tank car, and tank barge cleaning

facilities. As determined from Detailed Questionnaire responses, typical cargos cleaned by

closed-top hopper facilities include dry bulk products such as agricultural chemicals, fertilizers,

and coal cargos not typically hauled in tank trucks, rail tank cars, and tank barges. Therefore,

closed-top hopper cleaning facilities are unique from other facilities based on both cleaning

processes used and cargo types transported.

In summary, these results indicate differences between certain types of facilities

based on cleaning processes used. Unique facility types include facilities that clean a wide variety

of cargo types, facilities that clean only food grade products, facilities that clean only petroleum

and coal products, and facilities that clean predominantly closed-top hoppers. However, these

differences are primarily related to cargo types and tank types cleaned. Further subcategorization

analyses related to cargo types and tank types cleaned are described below. Therefore, cleaning

processes alone were not considered an appropriate basis for subcategorization.

5.1.2 Tank Type Cleaned

EPA analyzed the distribution of TEC facilities by tank type and combinations of

tank types cleaned. Section 4.4 of this document discusses in detail the various tank types

cleaned. In general, facilities responding to the Detailed Questionnaire reported cleaning the nine

primary tank types listed below:

C Tank Truck (T);

C Rail Tank Car (R);

C Tank Barge (B);

C Intermediate Bulk Container (IBC);

C Intermodal Tank Container (IM);

C Ocean/Sea Tanker (NT);

C Closed-Top Hopper Truck (TH);
Section 5.0 - Industry Subcategorization

5-5

C Closed-Top Hopper Rail Car (RH); and

C Closed-Top Hopper Barge (BH).

The majority of facilities in the TECI (913 of 1,229 facilities) reported cleaning

only one primary tank type, indicating that the TECI is mostly characterized by facilities that clean

only one primary tank type. Of these 913 facilities, 73% clean only tank trucks and 11% clean

only rail tank cars. The remaining 16% of facilities clean, in descending order by percentage of

facilities, only intermediate bulk containers, closed-top hopper trucks, tank barges, closed-top

hopper barges, or ocean/sea tankers. None of the facilities (as represented by the Detailed

Questionnaire sample population) clean only either intermodal tank containers or closed-top

hopper rail cars.

EPA conducted 44 engineering site visits at facilities that clean tank trucks, rail

tank cars, or tank barges. Information collected during these visits suggests many distinct

physical and operational characteristics among these three facility types that warrant distinct

subcategories for these three facility types. First, although all three facility types use chemical

cleaning solutions in tank cleaning processes as discussed above, rail tank car cleaning facilities

are more likely than other facility types to use steam in place of, or in addition to, chemical

cleaning solutions in the cleaning process. Second, the specific cargos cleaned by the three facility

types vary significantly. Tank trucks are used to transport refined end-use products. This

contrasts with tank barges, which are used to transport predominantly crude, unrefined cargos and

major manufacturing feedstock cargos such as petrochemicals and bulk oils (including foodgrade

oils). Cargos transported by rail tank car include products primarily in the middle of this cargo

type range, between crude, unrefined products and refined end-use products. Third, volume and

characteristics of wastewater generated by these facility types differ significantly, as described in

Section 6.0. Finally, as a result of differences in the volume and characteristics of wastewater

generated, average wastewater treatment costs currently incurred by facilities differ significantly

for these facility types.
Section 5.0 - Industry Subcategorization

5-6

Facilities that clean ocean/sea tankers represent less than one percent of facilities

within the TECI. Cleaning operations performed and specific commodities cleaned are similar to

those of tank barges, although different in scale. Based on the size of the ocean/sea tanker

cleaning segment and its similarity to the tank barge segment, development of a separate

subcategory within the TECI for ocean/sea tankers is not warranted.

Thirteen percent of facilities clean combinations of tank types; all of these facilities

clean tank trucks and some combination of intermediate bulk containers and/or intermodal tank

containers. Information collected during engineering site visits at these facilities indicates that the

cargo types cleaned and cleaning operations performed are identical for tanks and containers, with

minor modifications for cleaning intermediate bulk containers due to their relatively small

capacity. Therefore, development of a separate subcategory within the TECI for intermediate

bulk and/or intermodal tank containers is not warranted.

An additional 12% of facilities clean both tanks and closed-top hoppers within the

same mode of transportation (i.e., T and TH, R and RH, or B and BH). An analysis of these

facilities indicates that they clean either predominantly tanks or predominantly closed-top hoppers. 

Based on this characterization, development of a separate subcategory within the TECI for these

facilities is not warranted. These facilities are best characterized and regulated as facilities with

operations in multiple subcategories.

In summary, these results indicate significant differences between facilities based

on tank types cleaned. Therefore, EPA determined that subcategorization based, in part, on tank

types cleaned is appropriate. 

5.1.3 Cargo Type Cleaned

EPA considered subcategorizing the TECI based on the cargo type cleaned. 

Respondents to the Detailed Questionnaire reported cleaning tanks which transported 15 general

cargo types. The reported cargo types are listed below:
Section 5.0 - Industry Subcategorization

5-7

C Group A - Food Grade Products, Beverages, and Animal and Vegetable

Oils;

C Group B - Petroleum and Coal Products;

C Group C - Latex, Rubber, and Resins;

C Group D - Soaps and Detergents;

C Group E - Biodegradable Organic Chemicals;

C Group F - Refractory (Nonbiodegradable) Organic Chemicals;

C Group G - Inorganic Chemicals;

C Group H - Agricultural Chemicals and Fertilizers;

C Group I - Chemical Products;

C Group J - Hazardous Waste (as defined by RCRA in 40 CFR Part 261);

C Group K - Nonhazardous Waste;

C Group L - Dry Bulk Cargos (i.e., hopper cars); and

C Group M, N, and O - Other (Not Elsewhere Classified).

Forty-eight percent of facilities in the TECI clean only one cargo type, while 52%

clean a variety of cargo types. Of the facilities that reported cleaning only one cargo type, 65%

reported cleaning food grade products, beverages, and animal and vegetable oils (Group A), 16%

reported cleaning petroleum and coal products (Group B), and 10% reported cleaning “other

cargos” (Groups M, N and O). A review of the data for facilities that clean two or more cargos

suggests no apparent trend in cargo types cleaned, but rather a wide variety of combinations of

“chemical-type” cargos.

EPA was not able to identify any other distinct segments of the TECI among the

remaining groups, which included Latex, Rubber, and Resins (Group C), Soaps and Detergents

(Group D), Biodegradable Organic Chemicals (Group E), Refractory (Nonbiodegradable)
Section 5.0 - Industry Subcategorization

5-8

Organic Chemicals (Group F), Inorganic Chemicals (Group G), Agricultural Chemicals and

Fertilizers (Group H), Chemical Products (Group I), Hazardous Waste (Group J), Nonhazardous

Waste (Group K), and Groups M, N, and O consisting of cargos not elsewhere classified. 

There are several reasons to consider subcategorization based on type of cargo. 

Facilities that clean tanks which contained only food grade products (Group A), petroleum grade

products (Group B), or dry bulk goods (Group L) represent distinct and relatively large segments

of the TECI that differ significantly from facilities that clean tanks containing a wide variety of

cargos. The type of cargo transported and the type of cleaning processes utilized influences

wastewater characteristics. EPA therefore concluded that subcategorization of the TECI based,

in part, on cargo type is an appropriate means of subcategorization.

Specifically, EPA developed a separate subcategory for facilities that clean tanks

that contained food grade cargos. EPA also developed separate subcategories for facilities that

clean closed-top hoppers (i.e., vessels that contained dry bulk goods). 

EPA considered developing separate subcategories for facilities that clean tanks

that contained “chemical” cargos and for facilities that clean tanks that contained “petroleum”

cargos. EPA compared raw wastewater characterization data collected for wastewaters

generated from barge/chemical and barge/petroleum facilities and concluded the wastewater

characteristics and treatability were similar. Therefore, EPA decided to combine these

subcategories.

EPA also compared raw wastewater characterization data for the truck/chemical

and truck/petroleum facilities, but found fewer similarities. For example, fewer pollutants were

detected at the truck/petroleum facility than at the truck/chemical facilities, and similarly detected

pollutants were found at lower concentrations at the truck/petroleum facility. However, EPA is

concerned that its wastewater characterization data for truck/petroleum facilities does not capture

all pollutant loadings attributable to these facilities (see discussion in Section 6.5) and that

apparent differences in wastewaters for these facilities are incorrect.
Section 5.0 - Industry Subcategorization

5-9

In addition, EPA found it difficult to clearly define “chemical” versus “petroleum”

cargos and was concerned that the rule incorporating separate subcategories would be difficult to

implement. EPA instead decided to develop combined “chemical and petroleum” subcategories in

order to provide unambiguous, straightforward definitions which provide clear direction for

implementation.

5.1.4 Water Use and Wastewater Reuse Practices

TEC facilities use water for cleaning and rinsing as well as for a number of

ancillary purposes such as hydrotesting, air pollution control, and process cooling water. Water

use varies based on a number of factors including type of tank cleaned, type of cleaning solution

utilized, type of cargo last contained in the tank, type of cargo to be transported, and tank

capacity. Significant observations of distinctions in water use include:

C Rail facilities use significantly larger volumes of water for tank hydrotesting

than truck facilities, presumably because rail tanks have larger capacities;

barge cleaning facilities do not report performing hydrotesting. 

C Truck facilities use significantly larger volumes of water for tank exterior

cleaning operations, presumably because tank exterior appearance is more

important for trucks, which are highly visible to the public.

C Rail facilities use significantly larger volumes of boiler water, presumably

because of their more extensive use of steam cleaning. (Virtually all

facilities, regardless of tank type, use boilers to heat cleaning solutions and

rinses and to heat air for tank drying.)

C Food grade facilities use significant volumes of cooling water, both for

TEC operations and for other on-site processes (e.g., juice processing,

rendering).

C Petroleum facilities use significantly larger volumes of tank hydrotesting

water, presumably because petroleum tanks are often in dedicated service

and are cleaned primarily to facilitate inspection, which typically includes

tank hydrotesting.
Section 5.0 - Industry Subcategorization

5-10

These observations indicate differences among facilities based on water use practices; however,

these differences are primarily related to types of tanks and cargos cleaned. 

EPA also investigated facilities that do not discharge TEC process wastewater to

surface waters or to POTWs (i.e., zero discharge facilities) to determine whether they exhibited

any unique water use characteristics that might represent a distinct subcategory. Of the estimated

537 zero discharge facilities, 46% achieved zero discharge by hauling their wastewater off site for

treatment and/or disposal. Facilities may haul wastewater off site because it is less expensive than

on-site treatment. An estimated 46% of zero discharge facilities disposed of their wastewater by

on-site land application, land disposal, deep-well injection, or evaporation. These alternative

disposal options are available to some facilities because of site-specific conditions which may

include being situated on land suitable for land-application, or being located close to an off-site

waste treatment facility. 

Only 8% of zero discharge facilities recycled or reused 100% of their TEC process

wastewater. Of these, 70% clean predominantly (i.e., 95% or greater) tanks that last contained

petroleum and coal products. As noted in Section 6.0, facilities that clean tanks containing 

petroleum and coal products discharge significantly less wastewater per tank cleaned than other

types of facilities.

In summary, the variations in water use practices among different types of facilities

demonstrate that the most appropriate method of subcategorization that encompasses water use

practices is based on the type of tank cleaned and type of cargo cleaned at a facility.

5.1.5 Wastewater Characteristics

EPA evaluated two wastewater characteristics for this subcategorization analysis: 

volume of tank interior cleaning wastewater generated per tank cleaned and concentration and

types of pollutants in TEC process wastewater. Section 6.0 provides additional information

concerning these two wastewater characteristics.
Section 5.0 - Industry Subcategorization

5-11

In order to evaluate wastewater volumes, EPA calculated the median wastewater

volume generated per tank cleaned from several different tank and cargo classifications. The

classifications selected represented cleaning processes performed, tank type cleaned, cargo type

cleaned, and water use and wastewater reuse practices described earlier in this section.

The median tank interior cleaning wastewater volumes generated by tank type

(gallons per tank) indicate significant differences, particularly for tank trucks (452) versus rail

tank cars (1,229) and tank barges (1,669); and for tanks (452 to 1,669) versus closed-top hoppers

(144 to 712). The median tank interior cleaning wastewater volumes generated by tank type and

cargo type (gallons per tank) also indicate significant differences, particularly for truck/chemical

(449) versus rail/chemical (1,701) versus barge/chemical (2,365); and for chemical (449 to 2,365)

versus petroleum (11 to 150).

EPA also evaluated available raw wastewater characterization data by tank type

and cargo classification. Significant observations from these analyses include:

C The number and types of pollutants detected at truck/chemical,

rail/chemical, and barge/chemical facilities were similar.

C Fewer pollutants were detected at the truck/petroleum facilities than at the

truck/chemical facilities, and similarly detected pollutants were found at

lower concentrations at the truck/petroleum facilities.

C The majority of pollutants detected at barge/chemical facilities were also

detected at the barge/petroleum facility. 

C The number and types of pollutants detected in the truck/food, rail/food,

and barge/food facilities were similar.

C The one closed-top hopper barge facility sampled was significantly different

from the other facility types in terms of the number of priority pollutants

detected, the total number of pollutants detected, and the specific

pollutants detected.
Section 5.0 - Industry Subcategorization

5-12

In conclusion, the distribution of median wastewater volume generated supports

the development of distinct subcategories within the TECI based on tank type and cargo type

cleaned. Analysis of raw wastewater characterization data collected during EPA's sampling

program also supports development of distinct subcategories within the TECI.

5.1.6 Facility Age

EPA evaluated the age of facilities as a possible means of subcategorization

because older facilities may have different processes and equipment that result in different

wastewater characteristics, and which therefore may require significantly greater or more costly

control technologies to comply with regulations.

EPA evaluated the treatment technologies in place as related to the year in which

the facility first conducted TEC operations. For this analysis, EPA characterized older facilities as

those that began TEC operations prior to 1980, and compared their wastewater treatment-inplace to that of facilities that began TEC operations after 1980. Treatment-in-place was evaluated

by whether facilities use treatment technologies classified as follows: no treatment, pretreatment,

primary treatment, secondary treatment, and advanced treatment. The specific treatment

technologies included within these technology classifications are listed in the Detailed

Questionnaire Data Element Dictionary (4). These analyses indicated that older facilities are as

likely to be currently operating treatment in place for each wastewater treatment classification as

are newer facilities. In addition, many older facilities have improved, replaced, or modified

equipment over time.

As described in Section 6.0, wastewater characteristics are predominantly

dependent on the type of cargos being cleaned, the type of tank being cleaned, and the types of

cleaning operations performed. The age of a facility does not have an appreciable impact on

wastewater characteristics and was not considered as a basis for subcategorization.
Section 5.0 - Industry Subcategorization

5-13

5.1.7 Facility Size

EPA considered subcategorization of the TECI on the basis of facility size. Three

parameters were identified as relative measures of facility size: number of employees, number of

tanks cleaned, and wastewater flow. EPA found that facilities of varying sizes generate similar

wastewaters and use similar treatment technologies within the subcategorization approach. A

detailed discussion of the pollutant loadings associated with small facilities can be found in the

“Final Cost-Effectiveness Analysis of Effluent Limitations Guidelines and Standards for the

Transportation Equipment Cleaning Category” (5). EPA determined that the industry should not

be subcategorized based on facility size. However, EPA is promulgating an exclusion for facilities

that discharge less than 100,000 gallons per year of TEC process wastewater to provide relief and

flexibility for facilities that perform a relatively small number of TEC operations and for permit

authorities.

5.1.8 Geographical Location

EPA performed a geographical mapping analysis of the Detailed Questionnaire

sample population of 142 facilities (discharging facilities plus zero discharge facilities). Note that

a simple geographical mapping of these 142 facilities may not accurately represent the TECI

because each facility in the sample population has a unique statistical survey weight, ranging from

1 to 87.6, which is not reflected in the maps; however, the mapping analysis may be appropriate

to identify potential geographic trends within the TECI. Maps were prepared to reflect all

surveyed facilities and to reflect facilities classified by tank type and by cargo type (these maps are

also presented and discussed in Section 4.9). The following geographic trends were observed:

C TEC facilities are located primarily within the industrial portions of the

United States, with relatively high concentrations in the area between

Houston and New Orleans and within specific urban areas, such as Los

Angeles, Chicago, and St. Louis;

C The distribution of truck facilities mirrors the distribution of all facilities;
Section 5.0 - Industry Subcategorization

5-14

C The distribution of rail facilities shows lower concentrations in the area

between Houston and New Orleans and higher concentrations across

eastern Texas as compared to all TEC facilities;

C Barge facilities are located along inland waterways of the United States;

C The distribution of chemical facilities resembles the distribution of all TEC

facilities except for a relatively lower concentration of facilities in the

northwestern region of the United States;

C Food grade facilities are specifically not located within the area between

Houston and New Orleans, and appear to be located primarily within

agricultural areas of the United States; and 

C Petroleum facilities are not concentrated in the area between Houston and

New Orleans, an area typically associated with the petroleum industry.

These trends suggest differences among facilities based on geographic distribution;

however, these differences are primarily related to types of tanks and cargos cleaned. Therefore,

geographic location alone is not an appropriate basis for subcategorization.

Geographic location may impact costs if additional land is required to install

treatment systems, since the cost of land will vary depending on whether the site is located in an

urban or rural location. The treatment systems used to treat TEC wastewaters typically do not

have large land requirements; therefore, subcategorization based on land availability is not

appropriate. Water availability is also a function of geographic location. However, limited water

supply encourages conservation by efficient use of water, including recycling and reuse, and

encourages the early installation of practices advisable for the entire category to reduce treatment

costs and improve pollutant removals. For this reason also, geographic location alone is not an

appropriate basis for subcategorization.
Section 5.0 - Industry Subcategorization

5-15

5.1.9 Water Pollution Control Technologies

EPA evaluated water pollution control technologies currently being used by the

industry as a basis for establishing regulations. The technologies are appropriate for the

wastewater characteristics typical of the TECI. As discussed in Section 5.1.5, TEC wastewater

characteristics (including wastewater volume generated and pollutant concentrations) are

dependent upon tank type and cargo type cleaned. Sections 5.1.2 and 5.1.3 discuss

subcategorization of the TECI based on tank type and cargo type cleaned, respectively. 

Therefore, water pollution control technologies alone are not considered an appropriate basis for

subcategorization.

5.1.10 Treatment Costs

Treatment costs vary significantly among facilities and are primarily dependent

upon water pollution control technologies being used and on facility wastewater flow rates. As

discussed in Section 5.1.9, water pollution control technologies used are based upon the facility

wastewater characteristics, which are dependent upon tank type and cargo type cleaned. 

Therefore, treatment costs alone are not considered an appropriate basis for subcategorization.

5.1.11 Non-Water Quality Environmental Impacts

Non-water quality environmental impacts from the TECI result from solid waste

disposal, transportation of wastes to off-site locations for treatment and disposal, and emissions of

volatile organic compounds to the air. However, as these impacts are a result of individual facility

practices and do not apply uniformly across different industry segments, non-water quality

environmental impacts are not an appropriate basis for subcategorization. Section 11.0 provides

further information concerning non-water quality environmental impacts of the TECI. 
Section 5.0 - Industry Subcategorization

5-16

5.2 Selection of Subcategorization Approach

Based on its evaluation of the above factors, EPA determined that

subcategorization of the TECI is necessary and that different effluent limitations and pretreatment

standards should be developed for subcategories of the industry. EPA concluded that the most

appropriate basis for subcategorization of the industry be based on tank type and cargo type

cleaned.

The tank type classifications for this rule include: (1) tank trucks and intermodal

tank containers; (2) rail tank cars; (3) tank barges and ocean/sea tankers; (4) closed-top hopper

trucks; (5) closed-top hopper rail cars; and (6) closed-top hopper barges. A description of each

of these tank type classifications is presented in Section 15.0. Containers defined as drums or

intermediate bulk containers (IBCs) are not covered by this guideline.

The cargo type classifications used as a basis for subcategorization include: (1)

food grade; (2) dry bulk; and (3) chemical and petroleum. A description of the cargo type

classifications is provided below.

Food Grade - “Food grade” cargos include edible and non-edible food products. 

Specific examples of food grade products include, but are not limited to, the

following cargos: alcoholic beverages, animal by-products, animal fats, animal

oils, caramel, caramel coloring, chocolate, corn syrup and other corn products,

dairy products, dietary supplements, eggs, flavorings, food preservatives, food

products that are not suitable for human consumption, fruit juices, honey, lard,

molasses, non-alcoholic beverages, salt, sugars, sweeteners, tallow, vegetable oils,

vinegar, and pool water. 

Dry Bulk - The dry bulk classification includes cargos containing dry bulk

products such as grain, soybeans, soy meal, soda ash, lime, fertilizer, plastic

pellets, flour, sugar, and similar commodities or cargos.

Chemical - Chemical cargos include, but are not limited to, the following cargos:

latex; rubber; plastic; plasticizers; resins; soaps; detergents; surfactants; agricultural

chemicals and pesticides; hazardous waste; organic chemicals including: alcohols,

aldehydes, formaldehydes, phenols, peroxides, organic salts, amines, amides, other
Section 5.0 - Industry Subcategorization

5-17

nitrogen compounds, other aromatic compounds, aliphatic organic chemicals,

glycols, glycerines, and organic polymers; refractory organic compounds including:

ketones, nitriles, organo-metallic compounds containing chromium, cadmium,

mercury, copper, zinc; and inorganic chemicals including: aluminum sulfate,

ammonia, ammonium nitrate, ammonium sulfate, and bleach. Cargos which are

not considered to be food grade, petroleum, or dry bulk goods are considered to

be chemical cargos.

Petroleum - Petroleum cargos include the products of the fractionation or straight

distillation of crude oil, redistillation of unfinished petroleum derivatives, cracking,

or other refining processes. For purposes of this rule, petroleum cargos also

include products obtained from the refining or processing of natural gas and coal. 

Specific examples of petroleum products include, but are not limited to: asphalt;

benzene; coal tar; crude oil; cutting oil; ethyl benzene; diesel fuel; fuel additives;

fuel oils; gasoline; greases; heavy, medium, and light oils; hydraulic fluids; jet fuel;

kerosene; liquid petroleum gases (LPG) including butane and propane; lubrication

oils; mineral spirits; naphtha; olefin, paraffin, and other waxes; tall oil; tar; toluene;

xylene; and waste oil.

Facilities that clean petroleum and/or chemical cargos are further subcategorized

by tank type as follows:

C Truck/Chemical & Petroleum;

C Rail/Chemical & Petroleum; and

C Barge/Chemical & Petroleum.

Definitions of these subcategories are provided at the end of this section.

Facilities that clean food grade cargos are combined into a single Food

Subcategory (definition provided at the end of this section). EPA determined that further

subcategorization of these facilities by tank type was not warranted for several reasons. First, the

pollutants of concern (i.e., conventional pollutants as discussed in Section 6.5 ) and achievable

effluent quality are identical for all three facility types. Second, large differences in wastewater

volumes generated are not significant because EPA has promulgated concentration-based rather

than mass-based effluent limitations. Note that EPA is regulating Food Subcategory wastewater

that is directly discharged but is not regulating wastewater that is indirectly discharged.
Section 5.0 - Industry Subcategorization

5-18

Facilities that clean closed-top hoppers (used to transport dry bulk cargos) are

further subcategorized by transportation mode as follows:

C Truck/Hopper;

C Rail/Hopper; and

C Barge/Hopper.

Definitions of these subcategories are provided at the end of this section. Note that EPA is not

regulating wastewater discharges from cleaning closed-top hoppers.

In summary, EPA has divided the TECI into the following 7 subcategories. 

Definitions of these subcategories are provided below:

Truck/Chemical & Petroleum

This subcategory applies to TEC facilities that clean tank trucks and intermodal

tank containers which have been used to transport chemical or petroleum cargos.

Rail/Chemical & Petroleum

This subcategory applies to TEC facilities that clean rail tank cars which have been

used to transport chemical or petroleum cargos.

Barge/Chemical & Petroleum

This subcategory applies to TEC facilities that clean tank barges or ocean/sea

tankers which have been used to transport chemical or petroleum cargos.
Section 5.0 - Industry Subcategorization

For those references included in the administrative record supporting the TECI rulemaking, the document control 1

number (DCN) is included in parentheses at the end of the reference.

5-19

Food

This subcategory applies to TEC facilities that clean tank trucks, intermodal tank

containers, rail tank cars, tank barges, or ocean/sea tankers which have been used to transport

food grade cargos.

Truck/Hopper

This subcategory applies to TEC facilities that clean closed-top hopper trucks.

Rail/Hopper

This subcategory applies to TEC facilities that clean closed-top hopper rail cars.

Barge/Hopper

This subcategory applies to TEC facilities that clean closed-top hopper barges.

5.3 References1

1. U.S. Environmental Protection Agency. Information Collection Request, Tank

and Container Interior Cleaning Screener Questionnaire. December 1993

(DCN T00312).

2. U.S. Environmental Protection Agency. Information Collection Request, 1994

Detailed Questionnaire for the Transportation Equipment Cleaning Industry. 

November 1994 (DCN T09843).

3. Eastern Research Group, Inc. Subcategorization Analysis for the Transportation

Equipment Cleaning Industry. May 5, 1998 (DCN T04653).
Section 5.0 - Industry Subcategorization

5-20

4. Eastern Research Group, Inc. Data Element Dictionary for Part A of the U.S.

Environmental Protection Agency 1994 Detailed Questionnaire for the

Transportation Equipment Cleaning Industry. April 4, 1997 (DCN T10271).

5. U.S. Environmental Protection Agency. Final Cost-Effective Analysis of Effluent

Limitations Guidelines and Standards for the Transportation Equipment Cleaning

Category. EPA 821-R-00-014, June 2000.
Section 6.0 - Water Use and Wastewater Characterization

6-1

6.0 WATER USE, WASTEWATER CHARACTERIZATION, AND

POLLUTANTS OF INTEREST

As part of the characterization of the Transportation Equipment Cleaning Industry

(TECI), EPA determined water use and wastewater generation practices associated with

transportation equipment cleaning (TEC) operations and assessed what constituents are typically

found in TEC wastewater. Information presented in this section is based on data provided by

facilities in response to the Detailed Questionnaire and obtained by EPA's site visit and sampling

programs. The Detailed Questionnaire database includes information regarding each facility’s

water use, wastewater discharge, and disposal practices. The following topics are discussed in

this section:

C Section 6.1: An overview of water use and wastewater generation in the

TECI;

C Section 6.2: The sources of wastewater identified in the TECI;

C Section 6.3: A discussion of the wastewater discharge practices within the

TECI;

C Section 6.4: An overview of water reuse and recycling in the TECI; 

C Section 6.5: Wastewater characterization data collected during EPA’s

sampling program; and

C Section 6.6: The pollutants of interest for the TECI.

Sections 6.1, 6.2, and 6.3 discuss water use and wastewater generation, sources of

wastewater, and wastewater discharge practices at only the estimated total TECI population of

692 discharging facilities. Section 6.4 includes water reuse and recycling information on the

discharging facilities as well as the zero discharge facilities. Section 6.5 presents EPA wastewater

characterization data collected from 20 sampling episodes, and Section 6.6 lists the pollutants of

interest, by subcategory, for the TECI.
Section 6.0 - Water Use and Wastewater Characterization

6-2

Some data summaries included in this section are presented by tank type and cargo

type cleaned. The combination of tank type and cargo type cleaned is referred to as the “facility

type.” To simplify data analyses by facility type, EPA assigned facilities that clean multiple cargo

types to a single, predominant cargo group. Therefore, for these facilities, facility characteristics

for all facility operations are attributed to the single predominant cargo group.

6.1 Water Use and Wastewater Generation

This section describes water use and wastewater generation practices of

discharging facilities which, by definition, use water or water-based cleaning solutions to clean or

rinse tank interiors. The amount of water required and wastewater generated to clean each tank

depends upon the cleaning process, as well as the tank type, tank size, and commodity last

transported. In addition, the TECI uses water and generates wastewater during other processes

related to TEC operations. The most significant uses of water associated with TEC operations

include:

C Tank interior prerinse, prior to cleaning;

C Tank interior cleaning hot or cold water washes and/or rinses;

C Tank exterior washing;

C Boiler feed water for conversion to steam for steam cleaning, for heating

cleaning solutions, or heating or drying tank interiors; and

C Formulation of cleaning solutions.

Following removal of the transported commodity from the tank, a residue or heel

remains, which is generally removed prior to tank cleaning. During or after heel removal, TEC

facilities may perform a rinse prior to commencing cleaning consisting of a short burst of water

applied to the tank interior to remove additional heel that adheres to the tank’s interior. Purposes

of the prerinse include (1) enhancing heel removal; (2) minimizing the amount of heel ultimately
Section 6.0 - Water Use and Wastewater Characterization

6-3

contained in tank cleaning wastewater (pollution prevention); (3) extending the service life of tank

cleaning solutions by reducing solution contamination from tank heel; and (4) protecting the

wastewater treatment system, which may not be acclimated or designed to treat residual heel. 

Prerinse wastewater is typically segregated from, rather than commingled with, subsequent TEC

wastewater.

TEC facilities perform hot or cold water washes and rinses to clean tank interiors. 

Water-soluble cargos and petroleum and coal products are typically cleaned using only hot or cold

water washes without chemical cleaning solutions. Virtually all cleaning sequences include a final

water rinse to remove cleaning solution residue, particularly when recirculated cleaning solutions

or water are used during the cleaning process. Steam cleaning is also performed, particularly by

rail tank car cleaning facilities. Tank interior cleaning is typically the largest use of water at TEC

facilities. 

Large volumes of water are typically used to clean tank exteriors, particularly at

tank truck cleaning facilities where appearance is important due to the high visibility on roadways. 

Soaps and hydrofluoric acid-based aluminum brighteners may also be used in this process. Onsite boilers may use significant volumes of water both as a feed stream and for maintenance, such

as during boiler blowdown. Finally, since cleaning solutions are often received in concentrated

form, water is used to formulate the cleaning solutions to appropriate concentrations. Water is

also used to “make up” cleaning solutions, due to loss by evaporation and solution carry-over into

subsequent tank rinse wastewater.

Table 6-1 summarizes the total annual volume of wastewater generated by the

TECI. Since many facilities perform both TEC and non-TEC operations, this table includes both

the amount of wastewater generated by TEC operations (total TEC wastewater) and the total

amount of wastewater reported to be generated by the TECI (total TEC and non-TEC

wastewater). Approximately 5.5 billion gallons of wastewater (both TEC and non-TEC

wastewater) is generated annually by the TECI. Facilities that clean tank trucks last containing

food cargos account for 70% of this volume, due to the large number of tanks cleaned, relatively
Section 6.0 - Water Use and Wastewater Characterization

6-4

greater use of exterior cleaning as part of the routine tank cleaning procedures, and wastewater

generated by food processing operations at many truck/food facilities. Truck/chemical facilities,

having the next largest volume, account for 17% of all wastewater generated by the TECI, while

13% of the total volume of wastewater generated is divided among the remaining nine facility

types.

Approximately 1.3 billion gallons of wastewater from interior cleaning operations

is generated annually, as shown in Table 6-1. Truck/chemical facilities account for 56% of the

total TEC wastewater volume, while truck/food facilities account for 19% of the total TEC

wastewater volume. These percentages differ significantly from those based on wastewater

generation volume. These differences indicate that truck/chemical facilities generate the majority

of their wastewater from cleaning the interiors of tanks, while truck/food facilities generate the

majority of their wastewater from cleaning tank exteriors and other processes. 

Table 6-2 provides a more detailed analysis of the average volume of TEC

wastewater generated per tank cleaning by commodity type and tank type. Truck tank, rail

tankcar, tank barge, truck hopper, rail hopper, barge hopper, intermediate bulk container (IBC),

and intermodal tank container (ITC) are the eight major tank types listed. In general, the tank

capacity decreases in the following order by tank type: tank barge, barge hopper, rail tank, rail

hopper, truck tank, truck hopper, ITC, and IBC. This decrease in tank size corresponds to a

decrease in the amount of wastewater generated per tank cleaning. The volume of wastewater

generated per tank cleaning for tank trucks is relatively similar for all commodity groups except

for the Latex, Rubber, and Resins Group; the Chemical Products Group; and the Hazardous

Waste Group. Facility personnel at facilities visited during engineering site visits and sampling

episodes indicated that resins are the most difficult commodity to clean. Chemical products such

as water treatment chemicals were also identified as difficult commodities to clean by facility

personnel. 
Section 6.0 - Water Use and Wastewater Characterization

6-5

6.2 Sources of Wastewater

EPA has identified the following operations as primary sources of wastewater

within the TECI:

C Tank interior cleaning;

C Tank exterior cleaning;

C Boiler blowdown;

C Tank hydrotesting;

C Safety equipment cleaning; and

C TEC-contaminated stormwater.

Tank interior cleaning wastewater includes water and steam condensate generated

by tank cleaning operations, prerinse solutions, chemical cleaning solutions, and final rinse

solutions. Tank exterior cleaning wastewater includes water and cleaning solutions generated by

tank exterior cleaning operations. Boiler blowdown is wastewater generated during maintenance

of on-site boilers used to heat tank cleaning solutions and rinses and to generate steam. Tank

hydrotesting (i.e., hydrostatic pressure testing) is performed by completely filling the tank with

water and applying a pressure of at least 150% of the maximum allowable working pressure. The

water is then typically discharged as a waste stream. Wastewater is also generated by cleaning

safety equipment. TEC-contaminated stormwater is commonly generated when rain water blows

or runs into the tank cleaning bay (most cleaning bays are enclosed or covered). In addition,

many wastewater treatment systems are not enclosed or covered resulting in generation of TECcontaminated stormwater from these areas.

Additional wastewater sources reported in responses to the Detailed Questionnaire

include air pollution control devices, maintenance and repair operations, laboratory wastewater,

TEC noncontact cooling water, and flare condensate; however, these sources were reported by

relatively few facilities and were generated in relatively small volumes.

Some facilities generate large volumes of non-TEC wastewater from food

processing or other manufacturing operations and from non-TEC process equipment cleaning. 
Section 6.0 - Water Use and Wastewater Characterization

6-6

Other facilities accept wastewater for treatment on site such as TEC wastewater from other

facilities or marine wastewater (e.g., bilge and ballast water). In these cases, wastewater

generated off site may comprise 50% or more of the total wastewater volume generated.

Table 6-3 summarizes the average volume of wastewater generated per day for the

six wastewater streams listed above. Average wastewater generation volumes were calculated

based on data from all the facilities within a specific cargo group. If a facility did not report

generating a wastestream, then that facility was assumed to generate zero gallons per day of that

wastestream. 

Tank interior cleaning wastewater comprises the largest wastewater stream

generated by facilities in eight of the eleven facility types (data for some facilities is not shown to

protect data confidentiality). For the remaining three facility types (rail/chemical,

truck/petroleum, and rail/food), either tank hydrotesting wastewater or tank exterior cleaning

wastewater comprise the largest wastewater stream.

Table 6-4 presents the total volume of wastewater generated per day by

wastewater stream type and facility type. This value is obtained by multiplying the average

volume of wastewater generated per facility per day (Table 6-3) by the total number of facilities

within each respective facility type. Truck/chemical and truck/food facilities generate the largest

volumes of interior wastewater and exterior wastewater because the largest number of tanks are

cleaned by facilities in these facility types.

Although barge/hopper and barge/chemical & petroleum facilities generate the

largest volume of TEC interior cleaning wastewater per facility as shown in Table 6-3, the total

volume of wastewater generated by these two facility types is significantly less than that

generated by truck/chemical and truck/food facilities. Although barge cleaning generates

significantly more wastewater per tank cleaning than truck cleaning, the total number of tank

trucks cleaned is much greater than the total number of tank barges cleaned.
Section 6.0 - Water Use and Wastewater Characterization

6-7

6.3 Wastewater Discharge Practices

EPA estimates that 692 facilities discharge TEC wastewater either directly or

indirectly. Table 6-5 summarizes the TECI discharge status by facility type. Approximately 97%

of the discharging facilities discharge wastewater indirectly, while only 3% discharge wastewater

directly. However, the majority of barge (tank and closed-top hopper) facilities (69%) discharge

directly to U.S. surface waters because these facilities are usually located on major waterways. In

addition, subsequent to 1994, the basis year of the detailed questionnaire, EPA learned of 4

barge/chemical and petroleum facilities that changed discharge status from direct to indirect. 

Where possible, EPA’s analyses reflect this change. EPA has identified direct discharging

facilities in addition to those shown in Table 6-5 (see Section 9.1.2); however, EPA has not

identified any direct discharging facilities of the following five facility types: truck/petroleum,

rail/petroleum, rail/food, truck/hopper, and rail/hopper.

Table 6-6 summarizes the total annual volume of wastewater discharged by the

TECI. Approximately 2.2 billion gallons of wastewater is discharged annually by TEC facilities. 

This volume includes all wastewater sources such as TEC and non-TEC wastewaters, but

excludes wastewaters that are not commingled with TEC wastewater such as sanitary wastewater

and noncontaminated stormwater. Truck/food facilities account for 41% of this volume, due to

the large number of tanks cleaned, relatively greater use of exterior cleaning as part of the routine

tank cleaning operations, and wastewater generated by food processing operations at many

truck/food facilities. Truck/chemical facilities, having the next largest volume, account for 39%

of all wastewater generated by the TECI, while 20% of the total volume of wastewater generated

is divided among the remaining nine facility groups.

EPA estimates that 547 facilities generate TEC wastewater but do not discharge

wastewater directly to surface waters or indirectly to POTWs. The majority of these facilities

achieve zero discharge of TEC wastewater by hauling the wastewater to a treatment, storage, and

disposal facility (TSDF), ballast water treatment facility, privately owned treatment works, or 

centralized waste treatment (CWT) facility, or disposing of the wastewater by land application,
Section 6.0 - Water Use and Wastewater Characterization

6-8

land disposal, or evaporation. An estimated 44 TEC facilities achieve zero discharge of TEC

wastewater by recycling or reusing 100% of TEC wastewater.

6.4 Water Reuse and Recycling

Water reuse and recycle activities commonly performed by discharging and zero

discharge facilities include:

C Recirculation of cleaning solutions, including chemical cleaning solutions

and water washes;

C Reuse of final rinse wastewater as initial rinse water; and

C Reuse of treated TEC wastewater as source water for TEC operations.

Other water reuse and recycle activities reported in responses to the Detailed Questionnaire

include:

C Reuse of hydrotest wastewater as source water for TEC operations;

C Use of TEC contaminated stormwater as source water for TEC operations;

and

C Reuse of final tank rinse wastewater as cleaning solution “make-up” water.

Additional information concerning water conservation and water recycle and reuse technologies

applicable to the TECI is included in Section 7.2.

Approximately 10% of facilities, including discharging and zero discharging

facilities, reuse all or part of treated TEC wastewater as source water for TEC operations. The

majority of these facilities are zero discharging facilities, as shown in Table 6-7. The highest

percentage of facilities that reuse wastewater in TEC operations are the truck/petroleum facilities. 
Section 6.0 - Water Use and Wastewater Characterization

6-9

For these facilities, 52 zero dischargers out of the total 104 truck/petroleum facilities reuse TEC

wastewater as source water for TEC operations. 

Wastewater streams that are recycled or reused for TEC operations include tank

interior cleaning wastewater and hydrotesting wastewater. Hydrotesting wastewater is typically

clean and does not require extensive treatment prior to recycle or reuse. Tank interior cleaning

wastewater generated by truck/petroleum or rail/petroleum facilities can typically be reused for

cleaning after treatment by simple oil/water separation. Tank interior cleaning wastewater

generated by facilities cleaning chemical cargos generally requires more extensive treatment prior

to reuse as source water in TEC operations. Accordingly, few facilities that clean chemical

cargos reuse treated TEC wastewater as source water for TEC operations. Finally, sanitation

requirements at many food grade facilities preclude the reuse of TEC wastewater as source water

for TEC operations at these facilities.

The Agency analyzed wastewater generation, treatment, and discharge diagrams

submitted in response to the Detailed Questionnaire to evaluate typical TEC wastewater

management practices and common wastewater recycle and reuse practices. Figure 6-1 illustrates

common wastewater management practices. The figure shows wastewater recycling that was

reported to be performed by one or more facilities within the Detailed Questionnaire sample

population. Review of the water flow diagrams submitted by facilities in responses to the

Detailed Questionnaire resulted in the following observations:

C Facilities that recycle one wastewater stream type do not necessarily

recycle additional wastewater stream types;

C Facilities that recycle wastewater streams generally segregate these streams

for treatment and recycle; and

C Wastewater stream recycle and reuse activities performed are dependent

upon the type of cargo cleaned.
Section 6.0 - Water Use and Wastewater Characterization

6-10

6.5 Wastewater Characterization

EPA conducted a study of TECI wastewaters to determine the presence or

absence of priority, conventional, and nonconventional pollutant parameters. Priority pollutants

parameters are defined in Section 307(a)(1) of the Clean Water Act (CWA). The list of priority

pollutant parameters, presented in Table 6-8, consists of 126 specific priority pollutants listed in

40 CFR Part 423, Appendix A. Section 301(b)(2) of the CWA obligates EPA to regulate priority

pollutants if they are determined to be present at significant concentrations and it is technically

and economically feasible. Section 304(a)(4) of the CWA defines conventional pollutant

parameters, which include biochemical oxygen demand (BOD ), total suspended solids (TSS), 5

pH, fecal coliform, and any additional pollutants defined by the administrator as conventional. 

The administrator designated oil and grease (referred to as hexane extractable material or HEM)

as an additional conventional pollutant on July 30, 1979 (44 FR 44501). These pollutant

parameters are subject to regulation as specified in Sections 304(b)(1)(A), 304(a)(4),

301(b)(2)(E), and 306 of the CWA. Nonconventional pollutant parameters are those that are

neither priority nor conventional pollutant parameters. Sections 301(b)(2)(F) and 301(g) of the

CWA give EPA the authority to regulate nonconventional pollutant parameters, as appropriate,

based on technical and economic considerations.

As discussed in Section 3.4, EPA conducted 20 sampling episodes at 18 facilities

representative of the variety of facilities in the TECI (2 facilities were sampled twice). As part of

this sampling program, EPA routinely analyzed wastewater samples for 4 conventional, 125

priority, and 348 nonconventional pollutant parameters, for a total of 477 pollutants analyzed. 

The nonconventional pollutants include organics, metals, pesticides, herbicides, dioxins, furans,

and classical wet chemistry parameters (classical pollutants) that do not appear on the list of

conventional or priority pollutants. 

Subsequent to sampling, wastewater characterization data from four facilities were

determined to not represent TEC wastewater, either because the facility was covered by another

effluent guideline or because the sampled waste stream was determined to not represent TEC
Section 6.0 - Water Use and Wastewater Characterization

6-11

wastewater. Tables 6-9 through 6-16 present available wastewater characterization data by tank

and cargo type cleaned. Data are available for the following: 

C Truck/chemical facilities (Table 6-9);

C Rail/chemical facilities (Table 6-10);

C Barge/chemical & petroleum facilities (Table 6-11);

C Truck/food facilities (Table 6-12);

C Rail/food facilities (Table 6-13);

C Barge/food facilities (Table 6-14);

C Truck/petroleum facilities (Table 6-15); and

C Barge/hopper facilities (Table 6-16).

Raw wastewater characterization data for truck/hopper, rail/hopper, and

rail/petroleum facilities were not collected during EPA’s sampling program. EPA believes that

characterization data from barge/hopper facilities represent truck/hopper and rail/hopper facilities

since these facilities clean similar cargos; however, the volume of TEC wastewater generated

during tank cleaning differs significantly among these facilities. EPA believes that characterization

data from truck/petroleum facilities represent rail/petroleum facilities since these facilities also

clean similar cargos.

However, in its analysis of the industry, EPA sampled one truck/petroleum facility. 

This facility treated only final rinse wastewater on site. Initial rinses and other TEC wastewaters

were contract hauled for off-site treatment and were consequently not included in the sampling

performed by EPA. Therefore, EPA did not use the data collected from this facility in further

analyses because the data are not considered to be representative of the Truck/Chemical &

Petroleum and Rail/Chemical & Petroleum Subcategories.

Tables 6-9 through 6-16 also present a statistical summary of the raw wastewater

characterization data, including the mean, minimum, and maximum concentration values for each

pollutant or parameter detected at least once in any raw wastewater characterization sample. For

samples in which individual pollutants were not detected, the sample detection limit was used in

calculating the mean concentration. The methodology used to calculate the mean concentration
Section 6.0 - Water Use and Wastewater Characterization

6-12

involved first calculating a mean concentration for each facility characterized and then calculating

a subcategory mean concentration using applicable mean facility concentrations. In addition, for

those samples in which individual pollutants were not detected, the sample detection limit is

reported as the minimum concentration. Also listed in these tables is the number of times each

pollutant or parameter was analyzed and detected in raw wastewater samples.

The summaries shown in Table 6-17 are derived from Tables 6-9 through 6-16. 

As expected, facilities cleaning chemical cargos have the highest number of priority pollutants

detected. In addition, the range of concentrations for the classical pollutants is highest for

barge/chemical & petroleum and truck/chemical facilities.

6.6 Pollutants of Interest

As discussed in Section 5.2, EPA subcategorized the TECI into 7 subcategories:

C Truck/Chemical & Petroleum Subcategory;

C Rail/Chemical & Petroleum Subcategory;

C Barge/Chemical & Petroleum Subcategory;

C Food Subcategory;

C Truck/Hopper Subcategory;

C Rail/Hopper Subcategory; and

C Barge/Hopper Subcategory.

Using the raw wastewater characterization data presented in Tables 6-9 through 6-

16, EPA determined those pollutants commonly present in TECI wastewater for each subcategory

and identified these pollutants as “pollutants of interest.” EPA considered a separate list of

pollutants of interest for each subcategory. EPA considered the following two general criteria to

identify pollutants of interest:

1. The frequency of detection in subcategory wastewater characterization

samples; and 
Section 6.0 - Water Use and Wastewater Characterization

6-13

2. The average raw wastewater concentration at those facilities sampled for

treatment performance. 

The first criterion indicates that the presence of the pollutant is representative of

the subcategory, rather than an isolated occurrence. The second criterion ensures that the

pollutant was present at treatable levels where EPA evaluated treatment performance. 

Application of these two general criteria is described in Sections 6.6.1 through 6.6.3.

If wastewater characterization samples were collected at two or more facilities

within a subcategory, then pollutants detected at least two times in wastewater characterization

samples were considered as pollutants of interest for that subcategory. If wastewater

characterization samples were collected at only one facility within a subcategory, then only one

detect was required for consideration as a pollutant of interest. Where EPA sampling data show

that a pollutant concentration is below the detection limit at all sampled facilities within a

subcategory, that pollutant is excluded from consideration as a pollutant of interest in that

subcategory.

EPA considered an average pollutant concentration of at least five times the

pollutant method detection limit to be a treatable level for all pollutants. To determine the

average pollutant concentration within each subcategory, EPA averaged both the detected and the

nondetected concentrations (nondetected concentrations were assumed to be equal to the

pollutant detection limit). For subcategories with treatment performance data from more than one

facility, pollutants present at treatable levels in the wastewater of at least one facility were

considered pollutants of interest for that subcategory. Table 6-18 shows pollutants of interest by

subcategory.
Section 6.0 - Water Use and Wastewater Characterization

6-14

6.6.1 Truck/Chemical & Petroleum, Rail/Chemical & Petroleum, and

Barge/Chemical & Petroleum Subcategories

Wastewater characterization samples were analyzed for all 477 pollutants for these

subcategories. As discussed in Section 5.2, facilities that clean petroleum and/or chemical cargos

are subcategorized by tank type (e.g., Truck/Chemical & Petroleum). However, for the purpose

of determining pollutants of interest for the Truck/Chemical & Petroleum Subcategory, EPA

excluded wastewater characterization data from the truck/petroleum facilities for the reasons

discussed in Section 6.5. Therefore, raw wastewater characterization data from only

truck/chemical facilities are used to identify pollutants of interest in the Truck/Chemical &

Petroleum Subcategory.

The same selection criteria were applied separately to the analytical data available

for the Truck/Chemical & Petroleum, Rail/Chemical & Petroleum, and Barge/Chemical &

Petroleum Subcategories to identify pollutants of interest. These include:

C The pollutant was detected in at least two TEC wastewater

characterization samples.

C The average raw wastewater concentration was at least five times the

method detection limit from at least one facility sampled for treatment

performance.

EPA conducted a rigorous analytical data review of all detects in Sampling

Episode 4676 and 4677 (Truck/Chemical & Petroleum Subcategory). Based on this review, EPA

determined that the presence of disulfoton and EPN are questionable in Truck/Chemical &

Petroleum Subcategory raw wastewater. These pesticides are not further considered in EPA’s

analyses for the Truck/Chemical & Petroleum Subcategory.
Section 6.0 - Water Use and Wastewater Characterization

6-15

6.6.2 Food Subcategory

Wastewater characterization samples were analyzed for all 477 pollutants. 

Available characterization data for the Food Subcategory include five days of sampling at a

barge/food facility, one day of sampling at a truck/food facility, and one day of sampling at a

rail/food facility.

EPA used wastewater treatment system performance data collected at one

barge/food facility to represent the Food Subcategory. Samples collected at this one facility were

analyzed for 190 pollutants including all 176 semivolatile organics and 14 classical pollutants. 

Volatile organics, pesticides, herbicides, dioxins, furans, metals, and six classical pollutants

(adsorbable organic halides, total cyanide, amenable cyanide, surfactants, total sulfide, and volatile

residue) were not analyzed because these analytes were not detected at significant levels in

wastewater characterization samples. The following selection criteria were applied to identify

pollutants of interest for the Food Subcategory. These include:

C The pollutant was detected in at least one TEC wastewater characterization

sample at any Food facility.

C The average raw wastewater concentration was at least five times the

method detection limit at the facility sampled for treatment performance.

6.6.3 Truck/Hopper, Rail/Hopper, and Barge/Hopper Subcategories

The Agency used the sampling data collected at one barge/hopper facility to

represent all three hopper subcategories. Samples collected during this sampling episode were

analyzed for 453 pollutants, 24 fewer than the usual 477 pollutants. These 24 pollutants include

the 17 dioxins and furans, 5 classical wet chemistry parameters (adsorbable organic halides,

surfactants, total phenols, total sulfide, and volatile residue), and 2 volatile organics (m-xylene and

o- + p-xylene). Except for xylenes, these pollutants were not analyzed because they were not

expected to be present in TEC wastewater based on an assessment of the cargos cleaned and the
Section 6.0 - Water Use and Wastewater Characterization

6-16

cleaning processes used by facilities in these subcategories. M-xylene and o- + p-xylene were not

analyzed because the laboratory inadvertently analyzed for m- + p-xylene and o-xylene instead,

both of which were not detected. The same selection criteria were applied to the Truck/Hopper,

Rail/Hopper, and Barge/Hopper Subcategories to identify pollutants of interest. These include:

C The pollutant was detected in the single TEC wastewater characterization

sample.

C The average raw wastewater concentration was at least five times the

method detection limit at the facility sampled for treatment performance.
Section 6.0 - Water Use and Wastewater Characterization

6-17

Table 6-1

Estimates of Total Annual Volume of Wastewater Generated 

by Facility Type – Discharging Facilities Only

Facility Type (gal/yr) (%) (gal/yr) (%)

Total Wastewater Generated Cleaning Operations

Wastewater Generated from Interior

Amount of Industry Total Amount Industry Total

Percentage Percentage of

Truck/Chemical 929,000,000 17 716,000,000 56

Rail/Chemical 262,000,000 5 91,900,000 7

Barge/Chemical & Petroleum 194,000,000 4 94,100,000 7

Truck/Petroleum 35,400,000 <1 2,500,000 <1

Rail/Petroleum 2,800 <<1 2,830 <<1

Truck/Food 3,850,000,000 70 245,000,000 19

Rail/Food 88,200,000 2 6,920,000 <1

Barge/Food 21,700 <<1 21,700 <<1

Truck/Hopper 23,900,000 <1 14,300,000 1

Rail/Hopper 208,000 <<1 17,500 <<1

Barge/Hopper 112,000,000 2 103,000,000 8

TOTAL (a) 5,490,000,000 100 1,270,000,000 100

(a) Differences occur due to rounding.
Section 6.0 - Water Use and Wastewater Characterization

6-18

Table 6-2

Average Volume of Interior Cleaning Wastewater Generated per Tank Cleaning by Cargo Group and

Tank Type – Discharging Facilities Only

Cargo Group Tank Tank Barge Hopper Hopper Hopper Container Container

Average Volume of Interior Cleaning Wastewater Generated (gallons/tank)

Truck Rail Tank Truck Rail Barge Bulk Tank

Intermediate Intermodal

Food Grade Products 360 1,200 19,000 520 1,800 17,000 NC 430

Petroleum and Coal Products 410 990 13,000 (a) (a) (a) 87 430

Latex, Rubber, and Resins 610 1,600 (a) (a) (a) NC 50 230

Soaps and Detergents 440 620 NC (a) (a) NC (a) 550

Biodegradable Organic Chemicals 330 1,200 9,100 (a) (a) NC (a) (a)

Refractory Organic Chemicals 400 1,200 11,000 NC NC NC NC NC

Inorganic Chemicals 410 1,300 12,000 (a) (a) NC (a) NC

Agricultural Chemicals and Fertilizers 330 1,700 3,600 (a) (a) 850 NC NC

Chemical Products 640 1,700 3,700 NC (a) NC (a) 810

Hazardous Waste 170 NC NC NC NC NC NC NC

Nonhazardous Waste 280 530 (a) NC NC NC NC NC

Dry Bulk Commodities or Cargos 580 (a) NC 470 1,900 (a) NC NC

(a) Not disclosed to prevent compromising confidential business information.

NC - Not characterized by the Detailed Questionnaire sample population.
Section 6.0 - Water Use and Wastewater Characterization

6-19

Table 6-3

Average Volume of Wastewater Generated per Facility per Day by Wastewater Stream Type and Facility

Type – Discharging Facilities Only

Facility Type (gallons/day) (gallons/day) (gallons/day) (gallons/day) (gallons/day) (gallons/day)

TEC Interior TEC Exterior Hydrotesting Safety Equipment TEC-Contaminated

Cleaning Washing Boiler Blowdown Wastewater Rinsate Stormwater 

Truck/Chemical 8,400 1,200 15 270 7.8 18

Rail/Chemical 8,700 870 250 8,900 4.8 240

Barge/Chemical & Petroleum 20,000 (a) (a) NC (a) (a)

Truck/Petroleum 420 37 NC 1,800 NC (a)

Rail/Petroleum (a) NC NC NC NC NC

Truck/Food 4,600 640 (a) NC NC (a)

Rail/Food (a) (a) NC NC NC NC

Barge/Food (a) NC NC NC NC NC

Truck/Hopper 1,400 500 NC NC NC NC

Rail/Hopper (a) NC NC (a) (a) NC

Barge/Hopper 34,000 NC NC NC NC (a)

(a) Not disclosed to prevent compromising confidential business information.

NC - Not characterized by the Detailed Questionnaire sample population.
Section 6.0 - Water Use and Wastewater Characterization

6-20

Table 6-4

Total Volume of Wastewater Generated per Day by Wastewater Stream Type and Facility Type –

Discharging Facilities Only

Facility Type (gallons/day) (gallons/day) (gallons/day) (gallons/day) (gallons/day) (gallons/day)

TEC Interior TEC Exterior Hydrotesting Safety Equipment TEC-Contaminated

Cleaning Washing Boiler Blowdown Wastewater Rinsate Stormwater 

Truck/Chemical 2,400,000 340,000 4,400 77,000 2,200 5,300

Rail/Chemical 330,000 33,000 9,400 340,000 180 9100

Barge/Chemical & Petroleum 300,000 (a) (a) NC (a) (a)

Truck/Petroleum 15,000 1,300 NC 62,000 NC (a)

Rail/Petroleum (a) NC NC NC NC NC

Truck/Food 800,000 110,000 (a) NC NC (a)

Rail/Food (a) (a) NC NC NC NC

Barge/Food (a) NC NC NC NC NC

Truck/Hopper 46,000 17,000 NC NC NC NC

Rail/Hopper (a) NC NC (a) (a) NC

Barge/Hopper 430,000 NC NC NC NC (a)

(a) Not disclosed to prevent compromising confidential business information.

NC - Not characterized by the Detailed Questionnaire sample population.
Section 6.0 - Water Use and Wastewater Characterization

6-21

Table 6-5

Discharge Status by Facility Type

Facility Type Facilities (%) Facilities (%)

Indirect Discharge Direct Discharge

Number of Industry Total Number of Industry Total

Percentage of Percentage of

Truck/Chemical 288 43 0 0

Rail/Chemical 38 6 0 0

Barge/Chemical & Petroleum (a) 5 <1 10 53

Truck/Petroleum 34 5 0 0

Rail/Petroleum 3 <1 0 0

Truck/Food 173 26 0 0

Rail/Food 86 13 0 0

Barge/Food 2 <1 0 0

Truck/Hopper 34 5 0 0

Rail/Hopper 5 <1 0 0

Barge/Hopper 3 <1 9 47

TOTAL (b) 673 100 19 100

(a) Subsequent to 1994, the basis year of the detailed questionnaire, EPA learned of 4 barge/chemical and petroleum

facilities that changed discharge status from direct to indirect.

(b) Differences occur due to rounding.
Section 6.0 - Water Use and Wastewater Characterization

6-22

Table 6-6

Estimates of Total Annual Volume of Wastewater Discharged

By Facility Type and Discharge Status

Facility Type Status (gal/yr) Total (%) (gal/yr) Total (%)

Discharge Amount of Industry Amount of Industry

Total Interior Cleaning Total Commingled

Wastewater Discharged Wastewater Discharged

Percentage Percentage

Truck/Chemical Indirect 708,000,000 57 845,000,000 39

Rail/Chemical Indirect 91,300,000 7 130,000,000 6

Barge/Chemical & Petroleum Direct 30,300,000 2 42,800,000 2

Barge/Chemical & Petroleum Indirect 28,100,000 2 28,700,000 1

Truck/Petroleum Indirect 2,500,000 <1 3,100,000 <1

Rail/Petroleum Indirect 2,830 <<1 2,830 <<1

Truck/Food Indirect 243,000,000 20 889,000,000 41

Rail/Food Indirect 19,500,000 2 131,000,000 6

Barge/Food Indirect 21,700 <<1 21,700 <<1

Truck/Hopper Indirect 14,300,000 1 19,500,000 <1

Rail/Hopper Indirect 17,400 <<1 80,200 <<1

Barge/Hopper Direct 100,000,000 8 100,000,000 5

Barge/Hopper Indirect 2,610,000 <1 2,610,000 <1

TOTAL (a) 1,240,000,000 100 2,190,000,000 100

(a) Differences occur due to rounding.
Section 6.0 - Water Use and Wastewater Characterization

6-23

Table 6-7

Number of Facilities That Reuse All or Part of TEC Wastewater as Source

Water for TEC Operations

Facility Type Discharging Facilities Facilities Discharge Facilities

Number of Facilities that Reuse TEC

Wastewater

Total Number of

Zero Discharge Discharging and Zero

Truck/Chemical 14 33 556

Rail/Chemical 1 15 67

Barge/Chemical & Petroleum 3 1 31

Truck/Petroleum 0 52 104

Rail/Petroleum 0 1 4

Truck/Food 0 0 318

Rail/Food 0 0 86

Barge/Food 0 0 2

Truck/Hopper 5 0 39

Rail/Hopper 0 0 5

Barge/Hopper 0 0 14
Section 6.0 - Water Use and Wastewater Characterization

6-24

Table 6-8

Priority Pollutant List (a)

1 Acenaphthene 66 Bis (2-ethylhexyl) Phthalate

 2 Acrolein 67 Butyl Benzyl Phthalate

 3 Acrylonitrile 68 Di-n-butyl Phthalate

 4 Benzene 69 Di-n-octyl Phthalate

 5 Benzidine 70 Diethyl Phthalate

 6 Carbon Tetrachloride (Tetrachloromethane) 71 Dimethyl Phthalate

 7 Chlorobenzene 72 Benzo(a)anthracene (1,2-Benzanthracene)

 8 1,2,4-Trichlorobenzene 73 Benzo(a)pyrene (3,4-Benzopyrene)

 9 Hexachlorobenzene 74 Benzo(b)fluoranthene (3,4-Benzo fluoranthene)

10 1,2-Dichloroethane 75 Benzo(k)fluoranthene (11,12-Benzofluoranthene)

11 1,1,1-Trichloroethane 76 Chrysene

12 Hexachloroethane 77 Acenaphthylene

13 1,1-Dichloroethane 78 Anthracene

14 1,1,2-Trichloroethane 79 Benzo(ghi)perylene (1,12-Benzoperylene)

15 1,1,2,2-Tetrachloroethane 80 Fluorene

16 Chloroethane 81 Phenanthrene

17 Removed 82 Dibenzo(a,h)anthracene (1,2,5,6-Dibenzanthracene)

18 Bis (2-chloroethyl) Ether 83 Indeno(1,2,3-cd)pyrene (2,3-o-Phenylenepyrene)

19 2-Chloroethyl Vinyl Ether (mixed) 84 Pyrene

20 2-Chloronaphthalene 85 Tetrachloroethylene (Tetrachloroethene)

21 2,4,6-Trichlorophenol 86 Toluene

22 Parachlorometa Cresol (4-Chloro-3-Methylphenol) 87 Trichloroethylene (Trichloroethene)

23 Chloroform (Trichloromethane) 88 Vinyl Chloride (Chloroethylene)

24 2-Chlorophenol 89 Aldrin

25 1,2-Dichlorobenzene 90 Dieldrin

26 1,3-Dichlorobenzene 91 Chlordane (Technical Mixture & Metabolites)

27 1,4-Dichlorobenzene 92 4,4'-DDT (p,p'-DDT)

28 3,3'-Dichlorobenzidine 93 4,4'-DDE (p,p'-DDX)

29 1,1-Dichloroethene 94 4,4'-DDD (p,p'-TDE)

30 1,2-Trans-Dichloroethene 95 Alpha-endosulfan

31 2,4-Dichlorophenol 96 Beta-endosulfan

32 1,2-Dichloropropane 97 Endosulfan Sulfate

33 1,3-Dichloropropylene (Trans-1,3-Dichloropropene) 98 Endrin

34 2,4-Dimethylphenol 99 Endrin Aldehyde

35 2,4-Dinitrotoluene 100 Heptachlor

36 2,6-Dinitrotoluene 101 Heptachlor Epoxide

37 1,2-Diphenylhydrazine 102 Alpha-BHC

38 Ethylbenzene 103 Beta-BHC

39 Fluoranthene 104 Gamma-BHC (Lindane)

40 4-Chlorophenyl Phenyl Ether 105 Delta-BHC

41 4-Bromophenyl Phenyl Ether 106 PCB-1242 (Arochlor 1242)

42 Bis (2-chloroisopropyl) Ether 107 PCB-1254 (Arochlor 1254)

43 Bis (2-chloroethoxy) Methane 108 PCB-1221 (Arochlor 1221)

44 Methylene Chloride (Dichloromethane) 109 PCB-1232 (Arochlor 1232)

45 Methyl Chloride (Chloromethane) 110 PCB-1248 (Arochlor 1248)

46 Methyl Bromide (Bromomethane) 111 PCB-1260 (Arochlor 1260)

47 Bromoform (Tribromomethane) 112 PCB-1016 (Arochlor 1016)

48 Dichlorobromomethane (Bromodichloromethane) 113 Toxaphene

49 Removed 114 Antimony (total)

50 Removed 115 Arsenic (total)

51 Chlorodibromomethane (Dibromochloromethane) 116 Asbestos (fibrous)

52 Hexachlorobutadiene 117 Beryllium (total)

53 Hexachlorocyclopentadiene 118 Cadmium (total)

54 Isophorone 119 Chromium (total)

55 Naphthalene 120 Copper (total)

56 Nitrobenzene 121 Cyanide (total)

57 2-Nitrophenol 122 Lead (total)

58 4-Nitrophenol 123 Mercury (total)

59 2,4-Dinitrophenol 124 Nickel (total)

60 4,6-Dinitro-o-Cresol (Phenol, 2-methyl-4,6-dinitro) 125 Selenium (total)

61 N-Nitrosodimethylamine 126 Silver (total)

62 N-Nitrosodiphenylamine 127 Thallium (total)

63 N-Nitrosodi-n-propylamine (Di-n-propylnitrosamine) 128 Zinc (total)

64 Pentachlorophenol 129 2,3,7,8-Tetrachlorodibenzo-p-Dioxin

65 Phenol

Source: Clean Water Act

(a) Priority pollutants are numbered 1 through 129 but include 126 pollutants since EPA removed three pollutants from the list (Numbers 17, 49, and

50).
Section 6.0 - Water Use and Wastewater Characterization

6-25

Table 6-9

Summary of Raw Wastewater Characterization Data for Truck/Chemical Facilities

Priority Mean Minimum Maximum Number Number of

Pollutant Concentration Concentration Concentration of Times Times

Code Analyte Units (a) (b) (c) Detected Analyzed

Volatile Organics

P011 1,1,1-Trichloroethane μg/L 710 10 2,700 9 10

P013 1,1-Dichloroethane μg/L 12 9.9 36 2 10

P029 1,1-Dichloroethene μg/L 14 10 40 2 10

1,2-Dibromoethane μg/L 17 10 86 2 10

P010 1,2-Dichloroethane μg/L 400 10 1,700 4 10

P032 1,2-Dichloropropane μg/L 11 9.9 19 1 10

1,4-Dioxane μg/L 19 9.9 150 1 10

Acetone μg/L 24,000 57 67,000 10 10

P004 Benzene μg/L 35 10 270 3 10

P048 Bromodichloromethane μg/L 10 9.9 12 1 10

P007 Chlorobenzene μg/L 16 10 29 4 10

P023 Chloroform μg/L 65 10 420 6 10

Diethyl Ether μg/L 110 50 900 1 10

P038 Ethylbenzene μg/L 440 10 3,900 6 10

m-Xylene μg/L 1,700 10 7,100 6 10

Methyl Ethyl Ketone μg/L 5,200 50 28,000 6 10

Methyl Isobutyl Ketone μg/L 1,600 50 8,200 7 10

P044 Methylene Chloride μg/L 12,000 29 63,000 10 10

o- + p-Xylene μg/L 860 10 3,600 6 10

P085 Tetrachloroethene μg/L 1,100 10 6,500 8 10

P006 Tetrachloromethane μg/L 14 9.9 49 1 10
6-26

Table 6-9 (Continued)

Section 6.0 - Water Use and Wastewater Characterization

Priority Mean Minimum Maximum Number Number of

Pollutant Concentration Concentration Concentration of Times Times

Code Analyte Units (a) (b) (c) Detected Analyzed

P086 Toluene μg/L 1,600 10 7,000 7 10

P047 Tribromomethane μg/L 10 9.9 14 1 10

P087 Trichloroethene μg/L 26 10 81 4 10

Semivolatile Organics

P025 1,2-Dichlorobenzene μg/L 190 10 1,000 2 10

1-Methylphenanthrene μg/L 140 10 1,000 2 10

2,3-Dichloroaniline μg/L 3,600 10 34,000 2 10

P021 2,4,6-Trichlorophenol μg/L 180 10 1,500 2 10

P031 2,4-Dichlorophenol μg/L 57 10 160 2 10

2,6-Dichlorophenol μg/L 56 10 160 1 10

P024 2-Chlorophenol μg/L 67 10 160 3 10

2-Isopropylnaphthalene μg/L 240 10 1,000 3 10

2-Methylnaphthalene μg/L 150 10 1,000 7 10

P057 2-Nitrophenol μg/L 110 20 320 1 10

3,6-Dimethylphenanthrene μg/L 160 10 1,000 2 10

P058 4-Nitrophenol μg/L 270 50 800 1 10

P001 Acenaphthene μg/L 130 10 1,000 1 10

alpha-Terpineol μg/L 340 10 2,000 4 10

Aniline μg/L 130 10 1,000 1 10

Benzoic Acid μg/L 24,000 1,500 110,000 10 10

Benzyl Alcohol μg/L 410 28 1,900 9 10

Biphenyl μg/L 140 10 1,000 2 10

P066 Bis (2-ethylhexyl) Phthalate μg/L 900 12 4,200 9 10

P069 Di-n-Octyl Phthalate μg/L 350 10 2,200 5 10

P063 Di-n-Propylnitrosamine μg/L 270 20 2,000 1 10
6-27

Table 6-9 (Continued)

Section 6.0 - Water Use and Wastewater Characterization

Priority Mean Minimum Maximum Number Number of

Pollutant Concentration Concentration Concentration of Times Times

Code Analyte Units (a) (b) (c) Detected Analyzed

Dimethyl Sulfone μg/L 150 10 1,000 2 10

Diphenylamine μg/L 140 10 1,000 1 10

P080 Fluorene μg/L 140 10 1,000 1 10

Hexanoic Acid μg/L 77 10 200 2 10

P054 Isophorone μg/L 140 10 1,000 1 10

n-Decane μg/L 350 10 1,100 2 10

n-Docosane μg/L 330 10 2,600 8 10

n-Dodecane μg/L 1,100 10 3,200 4 10

n-Eicosane μg/L 410 10 1,900 8 10

n-Hexacosane μg/L 810 10 7,600 8 10

n-Hexadecane μg/L 640 10 1,800 8 10

P062 n-Nitrosodiphenylamine μg/L 270 20 2,000 1 10

n-Octacosane μg/L 940 10 9,000 6 10

n-Octadecane μg/L 450 10 1,700 8 10

n-Tetracosane μg/L 640 10 5,400 9 10

n-Tetradecane μg/L 560 10 2,100 7 10

n-Triacontane μg/L 1,200 10 11,000 3 10

P055 Naphthalene μg/L 330 10 1,000 7 10

o-Cresol μg/L 160 10 1,000 2 10

p-Cresol μg/L 130 10 670 4 10

p-Cymene μg/L 150 10 1,000 2 10

P081 Phenanthrene μg/L 180 10 1,000 2 10

P065 Phenol μg/L 2,000 100 6,400 9 10

Styrene μg/L 3,300 10 27,000 7 10

Tripropyleneglycol Methyl Ether μg/L 1,300 99 9,900 1 10
6-28

Table 6-9 (Continued)

Section 6.0 - Water Use and Wastewater Characterization

Priority Mean Minimum Maximum Number Number of

Pollutant Concentration Concentration Concentration of Times Times

Code Analyte Units (a) (b) (c) Detected Analyzed

Phenoxy-Acid Herbicides

2,4,5-T μg/L 0.85 0.20 4.4 4 10

2,4,5-TP μg/L 0.59 0.20 3.2 3 10

2,4-D μg/L 2.5 1.0 10 2 10

2,4-DB (Butoxon) μg/L 6.6 2.0 31 2 10

Dalapon μg/L 0.81 0.20 5.7 2 10

Dichloroprop μg/L 2.8 1.0 10 2 10

Dinoseb μg/L 2.3 0.50 18 3 10

MCPA μg/L 680 50 3,500 7 10

MCPP μg/L 130 50 740 1 10

Picloram μg/L 1.2 0.50 5.0 2 10

Organo-Phosphorous Pesticides

Azinphos Methyl μg/L 4.4 1.0 22 3 10

Demeton B μg/L 5.4 2.0 35 1 10

Diazinon μg/L 3.9 2.0 16 2 10

Dichlofenthion μg/L 2.8 2.0 9.0 3 10

Dimethoate μg/L 2.3 1.0 6.8 1 10

Ethion μg/L 2.4 2.0 4.3 1 10

Leptophos μg/L 5.6 2.0 34 3 10

Merphos μg/L 2.5 2.0 5.4 1 10

Methyl Chlorpyrifos μg/L 3.3 2.0 14 1 10

Methyl Parathion μg/L 2.3 2.0 4.0 1 10

Tetrachlorvinphos μg/L 2.7 2.0 7.1 3 10

Organo-Halide Pesticides

P094 4,4'-DDD μg/L 0.59 0.20 2.0 1 10
6-29

Table 6-9 (Continued)

Section 6.0 - Water Use and Wastewater Characterization

Priority Mean Minimum Maximum Number Number of

Pollutant Concentration Concentration Concentration of Times Times

Code Analyte Units (a) (b) (c) Detected Analyzed

P092 4,4'-DDT μg/L 0.29 0.10 1.0 1 10

P103 beta-BHC μg/L 0.35 0.10 1.0 3 10

Bromoxynil Octanoate μg/L 1.5 0.50 5.0 1 10

Chlorobenzilate μg/L 3.5 1.0 10 4 10

Diallate A μg/L 6.9 2.0 20 2 10

Diallate B μg/L 10 2.0 62 2 10

P090 Dieldrin (d) μg/L 0.13 0.040 0.40 3 10

P096 Endosulfan II μg/L 2.9 1.0 10 1 10

P097 Endosulfan Sulfate μg/L 0.30 0.10 1.0 2 10

P099 Endrin Aldehyde μg/L 3.3 0.10 15 2 10

P104 gamma-BHC μg/L 0.20 0.050 0.50 2 10

P091 gamma-Chlordane μg/L 0.16 0.050 0.50 1 10

Nitrofen μg/L 0.60 0.20 2.0 1 10

Pentachloronitrobenzene (PCNB) μg/L 7.9 0.050 77 3 10

Propachlor μg/L 2.3 0.10 11 1 10

Simazine μg/L 28 8.0 84 1 10

Terbuthylazine μg/L 15 5.0 50 1 10

Metals

Aluminum μg/L 6,100 48 30,000 10 10

P114 Antimony μg/L 57 3.4 240 6 10

P115 Arsenic μg/L 15 4.6 28 9 10

Barium μg/L 530 73 1,200 10 10

P117 Beryllium μg/L 0.92 0.30 1.4 2 10

Bismuth μg/L 110 0.10 650 1 10

Boron μg/L 4,700 140 26,000 10 10
6-30

Table 6-9 (Continued)

Section 6.0 - Water Use and Wastewater Characterization

Priority Mean Minimum Maximum Number Number of

Pollutant Concentration Concentration Concentration of Times Times

Code Analyte Units (a) (b) (c) Detected Analyzed

P118 Cadmium μg/L 18 1.0 49 9 10

Calcium μg/L 300,000 71,000 540,000 10 10

P119 Chromium μg/L 2,400 3.1 19,000 9 10

Cobalt μg/L 85 6.0 330 8 10

P120 Copper μg/L 1,100 40 9,200 10 10

Dysprosium μg/L 46 26 100 2 10

Europium μg/L 24 2.9 100 3 10

Gadolinium μg/L 98 28 300 2 10

Gallium μg/L 280 8.6 1,100 2 10

Germanium μg/L 200 72 500 3 10

Gold μg/L 68 11 200 3 10

Hafnium μg/L 160 1.0 500 1 10

Hexavalent Chromium mg/L 0.29 0.010 3.3 3 9

Holmium μg/L 140 0.50 500 1 10

Iridium μg/L 580 42 4,400 4 10

Iron μg/L 30,000 270 150,000 10 10

Lanthanum μg/L 35 0.10 100 1 10

P122 Lead μg/L 25 2.8 76 3 10

Lithium μg/L 96 31 180 7 10

Lutetium μg/L 22 0.58 100 2 10

Magnesium μg/L 72,000 10,000 270,000 10 10

Manganese μg/L 800 2.3 6,300 10 10

P123 Mercury μg/L 1.8 0.20 5.0 8 10

Molybdenum μg/L 100 18 370 10 10

Neodymium μg/L 52 0.50 200 1 10
6-31

Table 6-9 (Continued)

Section 6.0 - Water Use and Wastewater Characterization

Priority Mean Minimum Maximum Number Number of

Pollutant Concentration Concentration Concentration of Times Times

Code Analyte Units (a) (b) (c) Detected Analyzed

P124 Nickel μg/L 360 9.0 2,100 10 10

Niobium μg/L 170 32 500 6 10

Osmium μg/L 91 0.10 490 1 10

Palladium μg/L 190 0.50 500 1 10

Phosphorus μg/L 42,000 1,300 190,000 8 8

Platinum μg/L 570 66 3,700 5 10

Potassium μg/L 19,000 6,100 34,000 8 8

Praseodymium μg/L 140 1.0 500 2 10

Rhenium μg/L 160 19 500 3 10

Rhodium μg/L 1,200 1.0 6,700 4 10

Ruthenium μg/L 320 62 590 6 10

Samarium μg/L 150 0.50 500 1 10

Scandium μg/L 21 0.10 100 4 10

P125 Selenium μg/L 11 1.0 23 3 10

Silicon μg/L 14,000 2,800 51,000 9 10

P126 Silver μg/L 3.5 2.2 6.4 3 10

Sodium μg/L 1,000,000 140,000 2,800,000 10 10

Strontium μg/L 2,300 140 5,500 10 10

Sulfur μg/L 360,000 68,000 780,000 8 8

Tantalum μg/L 200 0.50 500 4 10

Tellurium μg/L 270 1.0 1,000 3 10

Terbium μg/L 140 8.3 500 2 10

P127 Thallium μg/L 3.7 1.0 24 2 10

Thorium μg/L 170 1.0 500 1 10

Thulium μg/L 110 0.50 500 1 10
6-32

Table 6-9 (Continued)

Section 6.0 - Water Use and Wastewater Characterization

Priority Mean Minimum Maximum Number Number of

Pollutant Concentration Concentration Concentration of Times Times

Code Analyte Units (a) (b) (c) Detected Analyzed

Tin μg/L 12,000 23 85,000 7 10

Titanium μg/L 190 6.1 1,000 10 10

Tungsten μg/L 220 1.0 500 3 10

Uranium μg/L 610 1.0 1,000 1 10

Vanadium μg/L 31 1.9 150 7 10

Ytterbium μg/L 22 0.10 100 4 10

Yttrium μg/L 2.1 0.30 5.0 1 10

P128 Zinc μg/L 830 35 3,500 10 10

Zirconium μg/L 27 0.10 100 1 10

Dioxins and Furans

1,2,3,4,6,7,8-Heptachlorodibenzo-p-dioxin pg/L 690 50 2,400 7 10

1,2,3,4,6,7,8-Heptachlorodibenzofuran pg/L 220 50 1,100 5 10

1,2,3,6,7,8-Hexachlorodibenzofuran pg/L 120 50 500 3 10

1,2,3,7,8,9-Hexachlorodibenzo-p-dioxin pg/L 97 50 500 1 10

Octachlorodibenzo-p-dioxin pg/L 6,100 200 21,000 10 10

Octachlorodibenzofuran pg/L 560 99 1,900 2 10

Classical Pollutants

Adsorbable Organic Halides (AOX) μg/L 5,100 1,200 19,000 10 10

Amenable Cyanide mg/L 0.0033 5.0x10 0.010 1 17 -6

Ammonia as Nitrogen mg/L 79 0.29 650 10 10

BOD 5-day mg/L 2,300 320 6,000 10 10

Chemical Oxygen Demand (COD) mg/L 6,600 830 16,000 10 10

Chloride mg/L 900 83 4,800 10 10

Fluoride mg/L 21 0.30 180 10 10

Hexane Extractable Material mg/L 1,300 6.0 5,300 38 38
6-33

Table 6-9 (Continued)

Section 6.0 - Water Use and Wastewater Characterization

Priority Mean Minimum Maximum Number Number of

Pollutant Concentration Concentration Concentration of Times Times

Code Analyte Units (a) (b) (c) Detected Analyzed

Nitrate/Nitrite mg/L 2.6 0.26 9.5 10 10

SGT-HEM mg/L 150 5.0 450 29 38

Surfactants (MBAS) mg/L 16 0.85 33 10 10

P121 Total Cyanide mg/L 0.020 0.0050 0.077 13 29

Total Dissolved Solids mg/L 5,000 1,700 11,000 10 10

Total Organic Carbon (TOC) mg/L 1,500 160 3,200 10 10

Total Phenols mg/L 2.6 0.0059 6.8 9 10

Total Phosphorus mg/L 22 0.37 53 10 10

Total Sulfide (Iodometric) mg/L 0.92 0.83 1.0 1 3

Total Suspended Solids mg/L 1,600 38 4,800 10 10

Volatile Residue mg/L 2,900 1,900 6,400 4 4

(a) For samples in which individual pollutants were not detected, the sample detection limit was used in calculating the mean concentration.

(b) Minimum value of detected amounts or detection limits (for samples in which individual pollutants were not detected) from all analyses.

(c) Maximum value of detected amounts or detection limits (for samples in which individual pollutants were not detected) from all analyses.

(d) EPA conducted a rigorous analytical data review of all detects in Sampling Episodes 4676 and 4677. Based on this review, EPA determined that the two of the

detected dieldrin samples are questionable.
Section 6.0 - Water Use and Wastewater Characterization

6-34

Table 6-10

Summary of Raw Wastewater Characterization Data for Rail/Chemical Facilities

Priority Mean Minimum Maximum Number of Number of

Pollutant Concentration Concentration Concentration Times Times

Code Analyte Units (a) (b) (c) Detected Analyzed

Volatile Organics

Acetone μg/L 390 50 930 4 5

P004 Benzene μg/L 27 10 44 1 5

Carbon Disulfide μg/L 10 10 11 1 5

P038 Ethylbenzene μg/L 70 10 180 4 5

m-Xylene μg/L 120 10 390 4 5

Methyl Ethyl Ketone μg/L 130 50 310 4 5

Methyl Isobutyl Ketone μg/L 51 50 58 1 5

o- + p-Xylene μg/L 87 10 240 4 5

P086 Toluene μg/L 97 19 170 5 5

Semivolatile Organics

P008 1,2,4-Trichlorobenzene μg/L 80 10 130 1 5

1-Methylfluorene μg/L 37 10 230 1 5

1-Methylphenanthrene μg/L 61 10 350 2 5

2,3-Benzofluorene μg/L 23 10 110 1 5

2,4-Diaminotoluene μg/L 1,100 99 6,200 3 5

P031 2,4-Dichlorophenol μg/L 310 10 590 1 5

P034 2,4-Dimethylphenol μg/L 25 10 100 3 5

P035 2,4-Dinitrotoluene μg/L 3,400 10 27,000 1 5

P036 2,6-Dinitrotoluene μg/L 940 10 7,300 1 5

2-Isopropylnaphthalene μg/L 87 10 140 1 5

2-Methylnaphthalene μg/L 59 10 400 1 5
6-35

Table 6-10 (Continued)

Section 6.0 - Water Use and Wastewater Characterization

Priority Mean Minimum Maximum Number of Number of

Pollutant Concentration Concentration Concentration Times Times

Code Analyte Units (a) (b) (c) Detected Analyzed

5-Nitro-o-toluidine μg/L 430 10 3,300 1 5

7,12-Dimethylbenz(a)anthracene μg/L 24 10 120 1 5

P001 Acenaphthene μg/L 41 10 260 1 5

P078 Anthracene μg/L 82 10 500 3 5

P072 Benzo(a)anthracene μg/L 22 10 100 1 5

Benzoic Acid μg/L 1,700 50 6,500 3 5

Biphenyl μg/L 51 10 330 1 5

P018 Bis (2-chloroethyl) Ether μg/L 25 10 100 1 5

P066 Bis (2-ethylhexyl) Phthalate μg/L 22 10 100 1 5

Carbazole μg/L 69 20 370 3 5

P076 Chrysene μg/L 27 10 150 1 5

Dimethyl Sulfone μg/L 50 10 170 2 5

Diphenyl Ether μg/L 28 10 100 1 5

P039 Fluoranthene μg/L 69 10 480 2 5

P080 Fluorene μg/L 46 10 300 1 5

Hexanoic Acid μg/L 2,300 10 9,300 4 5

n-Decane μg/L 31 10 100 2 5

n-Docosane μg/L 170 10 1,200 3 5

n-Dodecane μg/L 260 10 1,400 4 5

n-Eicosane μg/L 740 17 4,800 5 5

n-Hexacosane μg/L 130 10 420 3 5

n-Hexadecane μg/L 1,500 10 8,300 4 5

n-Octacosane μg/L 55 10 330 2 5

n-Octadecane μg/L 790 15 5,700 5 5

n-Tetracosane μg/L 180 10 780 4 5
6-36

Table 6-10 (Continued)

Section 6.0 - Water Use and Wastewater Characterization

Priority Mean Minimum Maximum Number of Number of

Pollutant Concentration Concentration Concentration Times Times

Code Analyte Units (a) (b) (c) Detected Analyzed

n-Tetradecane μg/L 940 10 6,400 4 5

n-Triacontane μg/L 75 10 270 2 5

P055 Naphthalene μg/L 47 10 290 4 5

p-Cresol μg/L 35 10 110 2 5

Perylene μg/L 35 10 210 1 5

Phenacetin μg/L 21 10 100 1 5

P081 Phenanthrene μg/L 150 10 1,100 3 5

P065 Phenol μg/L 370 10 1,900 4 5

P084 Pyrene μg/L 56 10 380 2 5

Styrene μg/L 32 10 100 2 5

Phenoxy-Acid Herbicides

2,4,5-T μg/L 13 0.20 20 2 5

2,4,5-TP μg/L 13 0.20 20 2 5

2,4-D μg/L 73 1.0 180 1 5

2,4-DB (Butoxon) μg/L 130 2.2 200 3 5

Dalapon μg/L 17 0.20 53 1 5

Dicamba μg/L 630 0.54 1,300 4 5

Dichloroprop μg/L 70 8.4 100 3 5

Dinoseb μg/L 32 0.50 52 3 5

MCPP μg/L 42,000 50 82,000 2 5

Organo-Phosphorous Pesticides

Chlorpyrifos μg/L 2.0 2.0 2.0 1 5

Dioxathion μg/L 5.8 5.0 8.0 1 4

Disulfoton μg/L 2.0 2.0 2.0 1 5

Tetrachlorvinphos μg/L 2.1 2.0 3.0 1 5
6-37

Table 6-10 (Continued)

Section 6.0 - Water Use and Wastewater Characterization

Priority Mean Minimum Maximum Number of Number of

Pollutant Concentration Concentration Concentration Times Times

Code Analyte Units (a) (b) (c) Detected Analyzed

Tokuthion μg/L 2.5 2.0 4.0 1 4

Trichlorfon μg/L 7.2 5.0 18 1 4

Trichloronate μg/L 2.1 2.0 2.4 1 5

Trimethylphosphate μg/L 2.8 2.0 5.0 2 4

Organo-Halide Pesticides

P094 4,4'-DDD μg/L 0.21 0.050 0.44 1 5

P092 4,4'-DDT μg/L 0.25 0.10 1.3 1 5

Acephate μg/L 730 20 5,500 2 5

Alachlor μg/L 0.25 0.20 0.60 1 5

P102 alpha-BHC μg/L 0.19 0.050 0.27 2 5

P091 alpha-Chlordane μg/L 0.099 0.080 0.11 1 5

Atrazine μg/L 84 1.0 630 1 5

Benefluralin μg/L 2.2 0.20 12 2 5

P103 beta-BHC μg/L 26 0.10 200 3 5

Butachlor μg/L 0.48 0.30 0.53 1 5

Captafol μg/L 1.9 1.2 2.0 1 5

Carbophenothion μg/L 1.0 0.50 1.2 1 5

Chlorobenzilate μg/L 1.1 0.25 2.7 1 5

Chloroneb μg/L 22 0.30 170 1 5

Dacthal (DCPA) μg/L 0.40 0.050 1.8 2 5

P105 delta-BHC μg/L 0.46 0.050 3.0 4 5

Diallate μg/L 77 2.2 580 3 5

Dicofol μg/L 1.4 1.0 3.4 1 4

P090 Dieldrin μg/L 1.7 0.040 12 3 5

P095 Endosulfan I μg/L 0.11 0.10 0.14 1 5
6-38

Table 6-10 (Continued)

Section 6.0 - Water Use and Wastewater Characterization

Priority Mean Minimum Maximum Number of Number of

Pollutant Concentration Concentration Concentration Times Times

Code Analyte Units (a) (b) (c) Detected Analyzed

P097 Endosulfan Sulfate μg/L 0.26 0.070 1.3 2 5

P099 Endrin Aldehyde μg/L 0.28 0.10 1.6 1 5

Endrin Ketone μg/L 0.13 0.080 0.33 1 5

Ethalfluralin μg/L 4.2 0.050 33 1 5

P104 gamma-BHC μg/L 0.28 0.050 1.9 1 5

P091 gamma-Chlordane μg/L 0.085 0.050 0.26 2 5

Isodrin μg/L 0.16 0.10 0.52 1 5

Isopropalin μg/L 0.56 0.20 3.1 1 5

Metribuzin μg/L 0.15 0.050 0.20 1 5

Mirex μg/L 0.69 0.20 4.0 1 5

Nitrofen μg/L 0.92 0.20 6.0 1 5

Pendimethalin μg/L 0.71 0.30 2.4 1 5

Pentachloronitrobenzene (PCNB) μg/L 0.10 0.050 0.46 2 5

Perthane μg/L 41 10 250 1 5

Propachlor μg/L 13 0.10 100 3 5

Propazine μg/L 18 1.0 39 3 5

Simazine μg/L 24,000 0.80 190,000 1 5

Strobane μg/L 46 5.0 170 1 4

Terbacil μg/L 19 2.0 140 2 5

Terbuthylazine μg/L 2,100 5.0 13,000 3 5

Triadimefon μg/L 1.0 0.50 1.6 1 5

Trifluralin μg/L 1.6 0.10 12 1 5

Metals

Aluminum μg/L 12,000 2,200 64,000 5 5

P114 Antimony μg/L 16 4.7 61 3 5
6-39

Table 6-10 (Continued)

Section 6.0 - Water Use and Wastewater Characterization

Priority Mean Minimum Maximum Number of Number of

Pollutant Concentration Concentration Concentration Times Times

Code Analyte Units (a) (b) (c) Detected Analyzed

P115 Arsenic μg/L 39 12 120 5 5

Barium μg/L 590 100 1,800 5 5

P117 Beryllium μg/L 0.64 0.20 1.3 1 5

Bismuth μg/L 84 67 100 1 5

Boron μg/L 2,100 460 5,500 5 5

Calcium μg/L 31,000 18,000 56,000 5 5

Cerium μg/L 390 280 500 1 5

P119 Chromium μg/L 50 28 150 5 5

Cobalt μg/L 28 18 60 5 5

P120 Copper μg/L 110 81 180 5 5

Europium μg/L 52 3.8 100 1 5

Gold μg/L 120 46 200 1 5

Iron μg/L 16,000 6,700 26,000 5 5

Lanthanum μg/L 98 96 100 1 5

P122 Lead μg/L 32 12 59 2 5

Lithium μg/L 76 39 150 2 5

Magnesium μg/L 14,000 6,200 28,000 5 5

Manganese μg/L 750 540 1,400 5 5

P123 Mercury μg/L 0.24 0.20 0.38 2 5

Molybdenum μg/L 33 10 72 4 5

P124 Nickel μg/L 81 36 120 5 5

Niobium μg/L 290 71 500 1 5

Phosphorus μg/L 8,200 2,100 33,000 5 5

Platinum μg/L 300 110 500 1 5

Potassium μg/L 970,000 4,500 2,800,000 5 5
6-40

Table 6-10 (Continued)

Section 6.0 - Water Use and Wastewater Characterization

Priority Mean Minimum Maximum Number of Number of

Pollutant Concentration Concentration Concentration Times Times

Code Analyte Units (a) (b) (c) Detected Analyzed

P125 Selenium μg/L 11 1.6 20 1 5

Silicon μg/L 13,000 5,500 26,000 5 5

Sodium μg/L 1,700,000 290,000 6,100,000 5 5

Strontium μg/L 340 210 600 5 5

Sulfur μg/L 440,000 53,000 1,200,000 5 5

Tantalum μg/L 310 110 500 1 5

P127 Thallium μg/L 7.9 1.3 28 1 5

Tin μg/L 28 25 34 1 5

Titanium μg/L 67 8.3 400 5 5

Tungsten μg/L 310 130 500 1 5

Uranium μg/L 880 760 1,000 1 5

Vanadium μg/L 48 10 80 3 5

Ytterbium μg/L 51 2.7 100 1 5

Yttrium μg/L 2.2 0.50 6.4 1 5

P128 Zinc μg/L 550 77 1,200 5 5

Zirconium μg/L 60 19 100 1 5

Dioxins and Furans

1,2,3,4,6,7,8-Heptachlorodibenzo-p-dioxin pg/L 2,600 50 20,000 1 5

1,2,3,4,6,7,8-Heptachlorodibenzofuran pg/L 330 50 1,800 1 5

1,2,3,6,7,8-Hexachlorodibenzo-p-dioxin pg/L 190 50 720 1 5

2,3,7,8-Tetrachlorodibenzofuran pg/L 21 10 100 1 5

Octachlorodibenzo-p-dioxin pg/L 8,200 100 61,000 3 5

Octachlorodibenzofuran pg/L 1,500 100 7,500 3 5

Classical Pollutants

Adsorbable Organic Halides (AOX) μg/L 1,400 150 1,900 5 5
6-41

Table 6-10 (Continued)

Section 6.0 - Water Use and Wastewater Characterization

Priority Mean Minimum Maximum Number of Number of

Pollutant Concentration Concentration Concentration Times Times

Code Analyte Units (a) (b) (c) Detected Analyzed

Ammonia as Nitrogen mg/L 25 8.0 48 5 5

BOD 5-day mg/L 1,700 260 4,200 5 5

Chemical Oxygen Demand (COD) mg/L 4,000 810 20,000 5 5

Chloride mg/L 1,200 280 3,900 5 5

Fluoride mg/L 1.8 0.90 2.2 5 5

Hexane Extractable Material mg/L 810 56 5,200 14 14

Nitrate/Nitrite mg/L 5.8 0.050 40 4 5

SGT-HEM mg/L 210 18 750 14 14

Surfactants (MBAS) mg/L 2.5 1.7 5.0 5 5

P121 Total Cyanide mg/L 0.019 0.0050 0.10 1 6

Total Dissolved Solids mg/L 7,900 980 26,000 5 5

Total Organic Carbon (TOC) mg/L 970 150 3,300 5 5

Total Phenols mg/L 0.43 0.021 1.5 5 5

Total Phosphorus mg/L 9.5 1.4 45 5 5

Total Suspended Solids mg/L 530 230 1,400 5 5

Volatile Residue mg/L 480 480 480 1 1

(a) For samples in which individual pollutants were not detected, the sample detection limit was used in calculating the mean concentration.

(b) Minimum value of detected amounts or detection limits (for samples in which individual pollutants were not detected) from all analyses.

(c) Maximum value of detected amounts or detection limits (for samples in which individual pollutants were not detected) from all analyses.
Section 6.0 - Water Use and Wastewater Characterization

6-42

Table 6-11

Summary of Raw Wastewater Characterization Data for Barge/Chemical & Petroleum Facilities

Priority Mean Minimum Maximum Number of Number of

Pollutant Concentration Concentration Concentration Times Times

Code Analyte Units (a) (b) (c) Detected Analyzed

Volatile Organics

P013 1,1-Dichloroethane μg/L 11 10 20 1 10

P010 1,2-Dichloroethane μg/L 450 10 11,000 1 10

Acetone μg/L 87,000 780 500,000 10 10

P003 Acrylonitrile μg/L 41,000 50 120,000 3 10

P004 Benzene μg/L 11,000 45 110,000 10 10

Carbon Disulfide μg/L 12 10 31 1 10

P023 Chloroform μg/L 55 10 1,100 2 10

P038 Ethylbenzene μg/L 4,500 89 16,000 10 10

Isobutyl Alcohol μg/L 180 10 2,100 1 10

m-Xylene μg/L 3,200 10 25,000 9 10

Methyl Ethyl Ketone μg/L 110,000 50 600,000 8 10

Methyl Isobutyl Ketone μg/L 48,000 50 1,100,000 8 10

Methyl Methacrylate μg/L 47 10 910 1 10

P044 Methylene Chloride μg/L 38 10 570 5 10

o- + p-Xylene μg/L 2,500 150 21,000 10 10

P085 Tetrachloroethene μg/L 120 10 1,400 1 10

P086 Toluene μg/L 13,000 410 51,000 10 10

P087 Trichloroethene μg/L 13 10 55 4 10

P088 Vinyl Chloride μg/L 13 10 77 1 10

Semivolatile Organics

P025 1,2-Dichlorobenzene μg/L 9,400 10 56,000 1 10
6-43

Table 6-11 (Continued)

Section 6.0 - Water Use and Wastewater Characterization

Priority Mean Minimum Maximum Number of Number of

Pollutant Concentration Concentration Concentration Times Times

Code Analyte Units (a) (b) (c) Detected Analyzed

1-Methylfluorene μg/L 360 10 1,300 4 10

1-Methylphenanthrene μg/L 1,400 17 13,000 9 10

1-Phenylnaphthalene μg/L 63 10 200 1 10

2,3-Benzofluorene μg/L 100 10 580 3 10

P034 2,4-Dimethylphenol μg/L 98 10 470 1 10

2-Methylnaphthalene μg/L 7,800 130 81,000 10 10

2-Phenylnaphthalene μg/L 80 10 590 1 10

3,6-Dimethylphenanthrene μg/L 200 10 870 5 10

P001 Acenaphthene μg/L 660 10 9,500 6 10

P077 Acenaphthylene μg/L 610 10 13,000 3 10

Aniline μg/L 59 10 200 1 10

P078 Anthracene μg/L 390 10 7,400 2 10

Benzoic Acid μg/L 800 50 1,900 4 10

Benzyl Alcohol μg/L 66 10 200 1 10

Biphenyl μg/L 2,500 29 26,000 9 10

P066 Bis (2-ethylhexyl) Phthalate μg/L 700 12 7,500 8 10

P069 Di-n-Octyl Phthalate μg/L 790 10 12,000 4 10

P039 Fluoranthene μg/L 62 10 200 1 10

P080 Fluorene μg/L 970 10 13,000 6 10

P009 Hexachlorobenzene μg/L 67 10 390 1 10

P012 Hexachloroethane μg/L 65 10 200 1 10

Hexanoic Acid μg/L 130 10 570 1 10

n-Decane μg/L 75,000 10 1,200,000 9 10

n-Docosane μg/L 2,600 34 49,000 10 10

n-Dodecane μg/L 34,000 450 360,000 10 10
6-44

Table 6-11 (Continued)

Section 6.0 - Water Use and Wastewater Characterization

Priority Mean Minimum Maximum Number of Number of

Pollutant Concentration Concentration Concentration Times Times

Code Analyte Units (a) (b) (c) Detected Analyzed

n-Eicosane μg/L 7,700 93 110,000 10 10

n-Hexacosane μg/L 140 10 550 7 10

n-Hexadecane μg/L 34,000 110 370,000 10 10

n-Octacosane μg/L 82 10 290 5 10

n-Octadecane μg/L 14,000 95 170,000 10 10

n-Tetracosane μg/L 1,400 33 15,000 9 10

n-Tetradecane μg/L 84,000 630 1,100,000 10 10

n-Triacontane μg/L 340 10 1,500 2 10

P055 Naphthalene μg/L 74,000 530 1,100,000 10 10

o-Cresol μg/L 110 10 620 1 10

p-Cresol μg/L 120 10 740 1 10

p-Cymene μg/L 6,400 11 150,000 5 10

Pentachloroethane μg/L 120 20 400 1 10

Pentamethylbenzene μg/L 1,600 10 6,700 4 10

P081 Phenanthrene μg/L 1,500 10 16,000 7 10

P065 Phenol μg/L 170 10 990 3 10

P084 Pyrene μg/L 520 10 4,200 7 10

Styrene μg/L 96,000 570 630,000 10 10

Thianaphthene μg/L 60 10 200 1 10

Phenoxy-Acid Herbicides

2,4-D μg/L 150 1.9 1,000 1 6

Dalapon μg/L 33 0.20 200 2 6

MCPA μg/L 9,700 1,200 50,000 2 6

Organo-Phosphorous Pesticides

Malathion μg/L 3.6 2.2 5.1 2 2
6-45

Table 6-11 (Continued)

Section 6.0 - Water Use and Wastewater Characterization

Priority Mean Minimum Maximum Number of Number of

Pollutant Concentration Concentration Concentration Times Times

Code Analyte Units (a) (b) (c) Detected Analyzed

Parathion (Ethyl) μg/L 6.6 2.2 11 2 2

Sulfotep μg/L 2.2 2.0 2.3 1 2

Trichlorfon μg/L 7.1 5.0 9.2 1 2

Organo-Halide Pesticides

P094 4,4'-DDD μg/L 1.2 0.45 2.0 1 2

P089 Aldrin μg/L 1.4 0.20 2.6 1 2

P102 alpha-BHC μg/L 0.30 0.10 0.50 1 2

Chlorobenzilate μg/L 7.8 5.6 10 1 2

P090 Dieldrin μg/L 0.37 0.040 0.70 1 2

Ethalfluralin μg/L 2.7 0.10 5.3 1 2

P091 gamma-Chlordane μg/L 0.28 0.050 0.50 1 2

Metribuzin μg/L 1.6 1.1 2.0 1 2

Propachlor μg/L 2.1 1.0 3.3 1 2

Metals

Aluminum μg/L 25,000 100 360,000 6 6

P114 Antimony μg/L 9.8 1.6 30 4 6

P115 Arsenic μg/L 11 1.1 94 3 6

Barium μg/L 260 66 1,400 6 6

P117 Beryllium μg/L 1.4 0.20 15 2 6

Bismuth μg/L 120 46 900 1 6

Boron μg/L 910 550 1,500 6 6

P118 Cadmium μg/L 43 1.0 390 5 6

Calcium μg/L 140,000 60,000 320,000 6 6

Cerium μg/L 400 170 1,700 2 6

P119 Chromium μg/L 330 2.6 2,600 4 6
6-46

Table 6-11 (Continued)

Section 6.0 - Water Use and Wastewater Characterization

Priority Mean Minimum Maximum Number of Number of

Pollutant Concentration Concentration Concentration Times Times

Code Analyte Units (a) (b) (c) Detected Analyzed

Cobalt μg/L 37 2.1 280 2 6

P120 Copper μg/L 880 76 6,000 6 6

Europium μg/L 18 2.9 200 1 6

Germanium μg/L 280 78 1,000 2 6

Gold μg/L 100 34 400 2 6

Hafnium μg/L 240 100 1,000 1 6

Hexavalent Chromium mg/L 0.19 0.070 0.27 3 3

Iodine μg/L 39,000 2,000 210,000 1 6

Iridium μg/L 390 42 2,400 4 6

Iron μg/L 610,000 3,000 6,600,000 6 6

Lanthanum μg/L 170 24 2,000 1 6

P122 Lead μg/L 370 12 1,800 4 6

Lithium μg/L 170 31 390 4 6

Lutetium μg/L 23 3.2 200 2 6

Magnesium μg/L 70,000 19,000 240,000 6 6

Manganese μg/L 4,100 140 38,000 6 6

P123 Mercury μg/L 5.4 0.10 81 3 6

Molybdenum μg/L 330 20 860 5 6

Neodymium μg/L 59 19 400 1 6

P124 Nickel μg/L 1,900 58 14,000 6 6

Niobium μg/L 210 32 1,600 3 6

Osmium μg/L 800 36 12,000 2 6

Phosphorus μg/L 15,000 690 56,000 5 6

Platinum μg/L 380 66 1,000 3 6

Potassium μg/L 31,000 22,000 65,000 6 6
6-47

Table 6-11 (Continued)

Section 6.0 - Water Use and Wastewater Characterization

Priority Mean Minimum Maximum Number of Number of

Pollutant Concentration Concentration Concentration Times Times

Code Analyte Units (a) (b) (c) Detected Analyzed

Praseodymium μg/L 160 38 1,000 3 6

Rhenium μg/L 97 19 1,000 1 6

Ruthenium μg/L 3,400 110 40,000 4 6

Scandium μg/L 14 0.80 200 1 6

P125 Selenium μg/L 4.0 1.0 20 1 6

Silicon μg/L 21,000 28 130,000 4 6

P126 Silver μg/L 5.7 1.8 34 3 6

Sodium μg/L 1,700,000 990,000 5,800,000 6 6

Strontium μg/L 4,700 980 12,000 6 6

Sulfur μg/L 460,000 96,000 2,100,000 6 6

Tantalum μg/L 300 50 1,700 4 6

Thorium μg/L 440 120 3,400 2 6

Tin μg/L 56 22 220 1 6

Titanium μg/L 38 1.6 300 5 6

Tungsten μg/L 300 120 1,200 2 6

Uranium μg/L 1,200 610 6,100 1 6

Vanadium μg/L 43 1.7 410 3 6

Ytterbium μg/L 22 1.1 200 5 6

Yttrium μg/L 5.5 0.40 56 2 6

P128 Zinc μg/L 19,000 630 79,000 6 6

Zirconium μg/L 35 11 260 2 6

Dioxins and Furans

1,2,3,4,6,7,8-Heptachlorodibenzofuran pg/L 320 50 4,100 1 10

Octachlorodibenzo-p-dioxin pg/L 9,400 100 100,000 4 10

Octachlorodibenzofuran pg/L 960 100 8,200 3 10
6-48

Table 6-11 (Continued)

Section 6.0 - Water Use and Wastewater Characterization

Priority Mean Minimum Maximum Number of Number of

Pollutant Concentration Concentration Concentration Times Times

Code Analyte Units (a) (b) (c) Detected Analyzed

Classical Pollutants

Adsorbable Organic Halides (AOX) μg/L 940 82 3,500 10 10

Amenable Cyanide mg/L 0.092 0.0020 0.18 1 8

Ammonia as Nitrogen mg/L 54 0.60 150 10 10

BOD 5-day mg/L 5,700 120 26,000 10 10

Chemical Oxygen Demand (COD) mg/L 44,000 130 200,000 10 10

Chloride mg/L 1,100 40 2,800 10 10

Fluoride mg/L 1.4 0.74 3.9 9 9

Hexane Extractable Material mg/L 14,000 37 220,000 27 27

Nitrate/nitrite mg/L 22 0.16 55 10 10

SGT-HEM mg/L 6,300 21 98,000 25 25

Surfactants (MBAS) mg/L 9.0 0.12 13 6 6

P121 Total Cyanide mg/L 0.11 0.0040 0.21 5 8

Total Dissolved Solids mg/L 3,100 1.0 17,000 9 10

Total Organic Carbon (TOC) mg/L 10,000 30 53,000 10 10

Total Phenols mg/L 0.48 0.018 2.5 10 10

Total Phosphorus mg/L 6.4 0.080 31 10 10

Total Sulfide (Iodometric) mg/L 4.6 4.6 4.6 1 1

Total Suspended Solids mg/L 2,200 55 15,000 10 10

Volatile Residue mg/L 350 1.0 710 1 2

(a) For samples in which individual pollutants were not detected, the sample detection limit was used in calculating the mean concentration.

(b) Minimum value of detected amounts or detection limits (for samples in which individual pollutants were not detected) from all analyses.

(c) Maximum value of detected amounts or detection limits (for samples in which individual pollutants were not detected) from all analyses.
Section 6.0 - Water Use and Wastewater Characterization

6-49

Table 6-12

Summary of Raw Wastewater Characterization Data for Truck/Food Facilities

Priority Mean Minimum Maximum Number Number of

Pollutant Concentration Concentration Concentration of Times Times

Code Analyte Units (a) (b) (c) Detected Analyzed

Volatile Organics

Acetone μg/L 97 50 140 1 2

P023 Chloroform μg/L 93 10 180 1 2

Methyl Ethyl Ketone μg/L 55 50 60 1 2

Trichlorofluoromethane μg/L 1,500 10 2,900 1 2

Semivolatile Organics

Benzoic Acid μg/L 210 180 230 2 2

Dimethyl Sulfone μg/L 21 10 33 1 2

Hexanoic Acid μg/L 380 110 660 2 2

n-Hexacosane μg/L 85 10 160 1 2

n-Octacosane μg/L 74 10 140 1 2

n-Tetracosane μg/L 53 10 96 1 2

n-Triacontane μg/L 88 10 170 1 2

Phenoxy-Acid Herbicides

MCPA μg/L 170 50 300 1 2

Organo-Halide Pesticides

Diallate A μg/L 2.9 2.4 3.5 1 2

Metals

Aluminum μg/L 190 28 360 1 2

P114 Antimony μg/L 21 18 25 1 2

Barium μg/L 12 6.3 18 2 2

Bismuth μg/L 1.5 0.10 2.8 1 2

Boron μg/L 300 170 420 2 2
6-50

Table 6-12 (Continued)

Section 6.0 - Water Use and Wastewater Characterization

Priority Mean Minimum Maximum Number Number of

Pollutant Concentration Concentration Concentration of Times Times

Code Analyte Units (a) (b) (c) Detected Analyzed

Calcium μg/L 2,900 1,300 4,400 2 2

P120 Copper μg/L 170 34 300 2 2

Erbium μg/L 4.5 0.10 8.9 1 2

Europium μg/L 4.8 0.10 9.5 1 2

Gadolinium μg/L 1.9 0.50 3.2 1 2

Gallium μg/L 2.0 0.50 3.5 1 2

Germanium μg/L 46 0.50 91 1 2

Hafnium μg/L 7.6 1.0 14 1 2

Hexavalent Chromium mg/L 0.020 0.010 0.030 1 2

Indium μg/L 20 1.0 38 1 2

Iridium μg/L 24 1.0 46 1 2

Iron μg/L 670 7.0 1,300 2 2

Lanthanum μg/L 1.4 0.10 2.7 1 2

Lithium μg/L 4.7 0.10 9.2 1 2

Magnesium μg/L 2,900 370 5,400 2 2

Manganese μg/L 26 2.0 50 2 2

P123 Mercury μg/L 1.8 0.71 2.8 2 2

Neodymium μg/L 6.7 0.50 13 1 2

Niobium μg/L 150 150 150 2 2

Palladium μg/L 1.3 0.50 2.0 1 2

Platinum μg/L 67 35 98 2 2

Praseodymium μg/L 10 1.0 20 1 2

Rhenium μg/L 1.1 1.0 1.2 1 2

Ruthenium μg/L 6.6 1.0 12 1 2

Samarium μg/L 16 7.2 25 2 2

P125 Selenium μg/L 18 4.6 31 1 2
6-51

Table 6-12 (Continued)

Section 6.0 - Water Use and Wastewater Characterization

Priority Mean Minimum Maximum Number Number of

Pollutant Concentration Concentration Concentration of Times Times

Code Analyte Units (a) (b) (c) Detected Analyzed

Silicon μg/L 9,500 2,900 16,000 2 2

Sodium μg/L 280,000 220,000 340,000 2 2

Strontium μg/L 19 4.5 33 2 2

Tantalum μg/L 17 10 25 2 2

Tellurium μg/L 6.3 1.0 12 1 2

Terbium μg/L 18 16 21 2 2

Thorium μg/L 3.4 1.0 5.8 1 2

Titanium μg/L 11 10 12 2 2

Tungsten μg/L 7.9 1.0 15 1 2

Uranium μg/L 270 1.0 540 1 2

P128 Zinc μg/L 66 18 120 2 2

Zirconium μg/L 3.8 0.10 7.4 1 2

Dioxins and Furans

Octachlorodibenzo-p-dioxin pg/L 380 100 650 1 2

Classical Pollutants

Adsorbable Organic Halides (AOX) μg/L 2,000 190 3,900 2 2

Amenable Cyanide mg/L 0.0068 0.0050 0.016 1 7

Ammonia as Nitrogen mg/L 0.035 0.010 0.060 1 2

BOD 5-day mg/L 2,700 160 5,200 2 2

Chemical Oxygen Demand (COD) mg/L 3,000 380 5,600 2 2

Chloride mg/L 76 68 83 2 2

Fluoride mg/L 0.57 0.28 0.85 2 2

SGT-HEM mg/L 9.0 5.0 26 2 7

Nitrate/Nitrite mg/L 1.9 0.050 3.7 1 2

Hexane Extractable Material mg/L 130 5.2 270 7 7

Surfactants (MBAS) mg/L 10 0.49 20 2 2
6-52

Table 6-12 (Continued)

Section 6.0 - Water Use and Wastewater Characterization

Priority Mean Minimum Maximum Number Number of

Pollutant Concentration Concentration Concentration of Times Times

Code Analyte Units (a) (b) (c) Detected Analyzed

P121 Total Cyanide mg/L 0.0068 0.0050 0.016 1 7

Total Dissolved Solids mg/L 3,400 810 6,000 2 2

Total Organic Carbon (TOC) mg/L 1,300 86 2,500 2 2

Total Phenols mg/L 0.038 0.0050 0.070 1 2

Total Phosphorus mg/L 67 11 120 2 2

Total Sulfide (Iodometric) mg/L 3.5 1.0 6.0 1 2

Total Suspended Solids mg/L 420 28 800 2 2

Volatile Residue mg/L 4,300 310 8,300 2 2

(a) For samples in which individual pollutants were not detected, the sample detection limit was used in calculating the mean concentration.

(b) Minimum value of detected amounts or detection limits (for samples in which individual pollutants were not detected) from all analyses.

(c) Maximum value of detected amounts or detection limits (for samples in which individual pollutants were not detected) from all analyses.
Section 6.0 - Water Use and Wastewater Characterization

6-53

Table 6-13

Summary of Raw Wastewater Characterization Data for Rail/Food Facilities

Priority Mean Minimum Maximum Number of Number of

Pollutant Concentration Concentration Concentration Times Times

Code Analyte Units (a) (b) (c) Detected Analyzed

Semivolatile Organics

Benzoic Acid μg/L 78 78 78 1 1

P065 Phenol μg/L 58 58 58 1 1

Organo-Phosphorous Pesticides

Diazinon μg/L 31 31 31 1 1

Metals

Aluminum μg/L 150 150 150 1 1

Barium μg/L 18 18 18 1 1

Boron μg/L 39 39 39 1 1

P118 Cadmium μg/L 2.4 2.4 2.4 1 1

Calcium μg/L 31,000 31,000 31,000 1 1

Europium μg/L 10 10 10 1 1

Gadolinium μg/L 54 54 54 1 1

Holmium μg/L 140 140 140 1 1

Iridium μg/L 81 81 81 1 1

Iron μg/L 270 270 270 1 1

Lutetium μg/L 4.5 4.5 4.5 1 1

Magnesium μg/L 10,000 10,000 10,000 1 1

Manganese μg/L 4.8 4.8 4.8 1 1

Molybdenum μg/L 34 34 34 1 1

Neodymium μg/L 61 61 61 1 1

P124 Nickel μg/L 9.8 9.8 9.8 1 1
6-54

Table 6-13 (Continued)

Section 6.0 - Water Use and Wastewater Characterization

Priority Mean Minimum Maximum Number of Number of

Pollutant Concentration Concentration Concentration Times Times

Code Analyte Units (a) (b) (c) Detected Analyzed

Niobium μg/L 81 81 81 1 1

Phosphorus μg/L 1,800 1,800 1,800 1 1

Rhenium μg/L 26 26 26 1 1

Silicon μg/L 680 680 680 1 1

Sodium μg/L 6,400 6,400 6,400 1 1

Strontium μg/L 110 110 110 1 1

Sulfur μg/L 6,700 6,700 6,700 1 1

Tantalum μg/L 50 50 50 1 1

Thulium μg/L 23 23 23 1 1

Tungsten μg/L 320 320 320 1 1

Dioxins and Furans

1,2,3,4,6,7,8-Heptachlorodibenzofuran pg/L 300 300 300 1 1

Octachlorodibenzofuran pg/L 490 490 490 1 1

Classical Pollutants

Adsorbable Organic Halides (AOX) μg/L 15 15 15 1 1

Ammonia as Nitrogen mg/L 0.040 0.040 0.040 1 1

Chemical Oxygen Demand (COD) mg/L 34,000 34,000 34,000 1 1

Chloride mg/L 10 10 10 1 1

Fluoride mg/L 0.39 0.39 0.39 1 1

Nitrate/nitrite mg/L 0.16 0.16 0.16 1 1

Surfactants (MBAS) mg/L 0.011 0.011 0.011 1 1

P121 Total Cyanide mg/L 0.0043 0.0026 0.0061 2 4

Total Dissolved Solids mg/L 25,000 25,000 25,000 1 1

Total Organic Carbon (TOC) mg/L 13,000 13,000 13,000 1 1

Total Phenols mg/L 0.018 0.018 0.018 1 1
6-55

Table 6-13 (Continued)

Section 6.0 - Water Use and Wastewater Characterization

Priority Mean Minimum Maximum Number of Number of

Pollutant Concentration Concentration Concentration Times Times

Code Analyte Units (a) (b) (c) Detected Analyzed

Total Phosphorus mg/L 1.8 1.8 1.8 1 1

Total Sulfide (Iodometric) mg/L 11 11 11 1 1

Total Suspended Solids mg/L 27 27 27 1 1

(a) For samples in which individual pollutants were not detected, the sample detection limit was used in calculating the mean concentration.

(b) Minimum value of detected amounts or detection limits (for samples in which individual pollutants were not detected) from all analyses.

(c) Maximum value of detected amounts or detection limits (for samples in which individual pollutants were not detected) from all analyses.
Section 6.0 - Water Use and Wastewater Characterization

6-56

Table 6-14

Summary of Raw Wastewater Characterization Data for Barge/Food Facilities

Priority Mean Minimum Maximum Number Number of

Pollutant Concentration Concentration Concentration of Times Times

Code Analyte Units (a) (b) (c) Detected Analyzed

Volatile Organics

Acetone μg/L 180 180 180 1 1

Methyl Ethyl Ketone μg/L 130 130 130 1 1

Semivolatile Organics

1,3,5-Trithiane μg/L 280 50 500 1 5

Benzoic Acid μg/L 2,200 50 4,100 3 5

Hexanoic Acid μg/L 64,000 2,000 150,000 5 5

n-Tetradecane μg/L 55 10 100 1 5

o-Cresol μg/L 79 10 200 1 5

P065 Phenol μg/L 200 10 540 3 5

Phenoxy-Acid Herbicides

2,4-D μg/L 7.5 7.5 7.5 1 1

Organo-Halide Pesticides

Diallate A μg/L 21 21 21 1 1

Metals

Aluminum μg/L 1,700 1,700 1,700 1 1

Barium μg/L 88 88 88 1 1

P118 Cadmium μg/L 4.6 4.6 4.6 1 1

Calcium μg/L 21,000 21,000 21,000 1 1

P119 Chromium μg/L 47 47 47 1 1

Cobalt μg/L 19 19 19 1 1

P120 Copper μg/L 100 100 100 1 1
6-57

Table 6-14 (Continued)

Section 6.0 - Water Use and Wastewater Characterization

Priority Mean Minimum Maximum Number Number of

Pollutant Concentration Concentration Concentration of Times Times

Code Analyte Units (a) (b) (c) Detected Analyzed

Europium μg/L 12 12 12 1 1

Gadolinium μg/L 36 36 36 1 1

Gallium μg/L 170 170 170 1 1

Germanium μg/L 290 290 290 1 1

Hafnium μg/L 29 29 29 1 1

Hexavalent Chromium mg/L 0.31 0.31 0.31 1 1

Iron μg/L 42,000 42,000 42,000 1 1

P122 Lead μg/L 150 150 150 1 1

Lithium μg/L 8.5 8.5 8.5 1 1

Lutetium μg/L 1.8 1.8 1.8 1 1

Magnesium μg/L 17,000 17,000 17,000 1 1

Manganese μg/L 410 410 410 1 1

P123 Mercury μg/L 0.41 0.41 0.41 1 1

Molybdenum μg/L 18 18 18 1 1

Neodymium μg/L 5.4 5.4 5.4 1 1

P124 Nickel μg/L 210 210 210 1 1

Niobium μg/L 150 150 150 1 1

Osmium μg/L 12 12 12 1 1

Palladium μg/L 9.4 9.4 9.4 1 1

Platinum μg/L 520 520 520 1 1

Rhenium μg/L 18 18 18 1 1

Ruthenium μg/L 120 120 120 1 1

Samarium μg/L 29 29 29 1 1

Scandium μg/L 0.26 0.26 0.26 1 1

Silicon μg/L 7,400 7,400 7,400 1 1
6-58

Table 6-14 (Continued)

Section 6.0 - Water Use and Wastewater Characterization

Priority Mean Minimum Maximum Number Number of

Pollutant Concentration Concentration Concentration of Times Times

Code Analyte Units (a) (b) (c) Detected Analyzed

P126 Silver μg/L 20 20 20 1 1

Sodium μg/L 550,000 550,000 550,000 1 1

Strontium μg/L 110 110 110 1 1

Terbium μg/L 5.6 5.6 5.6 1 1

Thulium μg/L 17 17 17 1 1

Uranium μg/L 940 940 940 1 1

Vanadium μg/L 12 12 12 1 1

P128 Zinc μg/L 330 330 330 1 1

Dioxins and Furans

2,3,7,8-Tetrachlorodibenzofuran pg/L 11 11 11 1 1

Octachlorodibenzo-p-dioxin pg/L 110 110 110 1 1

Classical Pollutants

Ammonia as Nitrogen mg/L 3.0 0.77 9.3 5 5

BOD 5-day mg/L 4,600 890 6,800 5 5

Chemical Oxygen Demand (COD) mg/L 7,300 540 12,000 5 5

Chloride mg/L 150 88 180 5 5

Fluoride mg/L 0.34 0.28 0.46 5 5

Hexane Extractable Material mg/L 720 75 1,100 5 5

Nitrate/Nitrite mg/L 0.093 0.050 0.30 3 5

SGT-HEM mg/L 52 5.0 140 3 5

Surfactants (MBAS) mg/L 2.8 2.8 2.8 1 1

Total Dissolved Solids mg/L 3,000 1,800 3,700 5 5

Total Organic Carbon (TOC) mg/L 2,500 1,600 3,300 5 5

Total Phenols mg/L 0.50 0.26 1.2 5 5

Total Phosphorus mg/L 92 51 180 5 5
6-59

Table 6-14 (Continued)

Section 6.0 - Water Use and Wastewater Characterization

Priority Mean Minimum Maximum Number Number of

Pollutant Concentration Concentration Concentration of Times Times

Code Analyte Units (a) (b) (c) Detected Analyzed

Total Sulfide (Iodometric) mg/L 16 16 16 1 1

Total Suspended Solids mg/L 1,300 260 2,000 5 5

Volatile Residue mg/L 2,500 2,500 2,500 1 1

(a) For samples in which individual pollutants were not detected, the sample detection limit was used in calculating the mean concentration.

(b) Minimum value of detected amounts or detection limits (for samples in which individual pollutants were not detected) from all analyses.

(c) Maximum value of detected amounts or detection limits (for samples in which individual pollutants were not detected) from all analyses.
Section 6.0 - Water Use and Wastewater Characterization

6-60

Table 6-15

Summary of Raw Wastewater Characterization Data for Truck/Petroleum Facilities

Priority Mean Minimum Maximum Number of Number of

Pollutant Concentration Concentration Concentration Times Times

Code Analyte Units (a) (b) (c) Detected Analyzed

Volatile Organics

Acetone μg/L 180 99 310 5 5

m-Xylene μg/L 10 10 12 1 5

P086 Toluene μg/L 20 10 43 2 5

Semivolatile Organics

Biphenyl μg/L 410 10 2,000 1 5

P066 Bis (2-ethylhexyl) Phthalate μg/L 110 68 150 5 5

Diphenyl Ether μg/L 11 10 16 1 5

n-Decane μg/L 10 10 11 1 5

n-Docosane μg/L 26 10 47 4 5

n-Dodecane μg/L 20 10 34 3 5

n-Eicosane μg/L 53 22 87 5 5

n-Hexacosane μg/L 26 10 37 3 5

n-Hexadecane μg/L 36 10 79 4 5

n-Octacosane μg/L 64 43 110 5 5

n-Octadecane μg/L 45 21 94 5 5

n-Tetracosane μg/L 40 10 100 3 5

n-Tetradecane μg/L 40 12 69 5 5

n-Triacontane μg/L 93 10 140 4 5

P065 Phenol μg/L 18 10 35 2 5

Metals

Aluminum μg/L 500 180 850 5 5
6-61

Table 6-15 (Continued)

Section 6.0 - Water Use and Wastewater Characterization

Priority Mean Minimum Maximum Number of Number of

Pollutant Concentration Concentration Concentration Times Times

Code Analyte Units (a) (b) (c) Detected Analyzed

P114 Antimony μg/L 4.2 3.8 5.9 1 5

P115 Arsenic μg/L 4.9 3.3 11 1 5

Barium μg/L 73 42 96 5 5

Bismuth μg/L 81 46 120 4 5

Boron μg/L 430 320 540 5 5

P118 Cadmium μg/L 2.0 1.6 3.0 2 5

Calcium μg/L 30,000 12,000 58,000 5 5

Cerium μg/L 210 170 320 2 5

P119 Chromium μg/L 9.1 4.4 28 2 5

P120 Copper μg/L 5.8 2.8 18 1 5

Erbium μg/L 25 24 28 1 5

Europium μg/L 6.3 2.9 16 4 5

Holmium μg/L 60 39 78 5 5

Iron μg/L 1,400 860 2,200 5 5

Lanthanum μg/L 27 24 38 1 5

Lutetium μg/L 3.3 3.2 3.8 1 5

Magnesium μg/L 2,900 1,300 4,900 5 5

Manganese μg/L 150 65 280 5 5

P123 Mercury μg/L 0.29 0.20 0.63 1 5

Molybdenum μg/L 110 68 200 5 5

Neodymium μg/L 21 19 26 2 5

Phosphorus μg/L 2,500 1,500 5,900 5 5

Potassium μg/L 5,200 4,100 7,200 5 5

Praseodymium μg/L 44 38 52 3 5

Samarium μg/L 96 87 130 1 5
6-62

Table 6-15 (Continued)

Section 6.0 - Water Use and Wastewater Characterization

Priority Mean Minimum Maximum Number of Number of

Pollutant Concentration Concentration Concentration Times Times

Code Analyte Units (a) (b) (c) Detected Analyzed

Silicon μg/L 8,800 4,100 13,000 5 5

Sodium μg/L 500,000 380,000 730,000 5 5

Strontium μg/L 100 59 140 5 5

Sulfur μg/L 6,700 3,300 17,000 5 5

Tantalum μg/L 72 57 98 5 5

Titanium μg/L 6.4 1.2 18 3 5

Tungsten μg/L 190 130 440 2 5

Uranium μg/L 640 610 750 1 5

Vanadium μg/L 3.8 3.3 6.0 1 5

Ytterbium μg/L 1.1 0.90 1.8 1 5

P128 Zinc μg/L 350 190 490 5 5

Zirconium μg/L 11 11 14 1 5

Classical Pollutants

Ammonia as Nitrogen mg/L 0.30 0.16 0.48 5 5

BOD 5-day mg/L 67 48 110 5 5

Chemical Oxygen Demand (COD) mg/L 660 580 740 5 5

Chloride mg/L 530 400 800 5 5

Fluoride mg/L 1.5 1.1 2.0 5 5

Hexane Extractable Material mg/L 260 22 1,200 60 60

SGT-HEM mg/L 130 5.0 410 59 60

Total Dissolved Solids mg/L 1,300 950 1,900 5 5

Total Organic Carbon (TOC) mg/L 110 28 210 5 5
6-63

Table 6-15 (Continued)

Section 6.0 - Water Use and Wastewater Characterization

Priority Mean Minimum Maximum Number of Number of

Pollutant Concentration Concentration Concentration Times Times

Code Analyte Units (a) (b) (c) Detected Analyzed

Total Phosphorus mg/L 2.9 2.0 6.5 5 5

Total Suspended Solids mg/L 230 130 360 5 5

(a) For samples in which individual pollutants were not detected, the sample detection limit was used in calculating the mean concentration.

(b) Minimum value of detected amounts or detection limits (for samples in which individual pollutants were not detected) from all analyses.

(c) Maximum value of detected amounts or detection limits (for samples in which individual pollutants were not detected) from all analyses.
Section 6.0 - Water Use and Wastewater Characterization

6-64

Table 6-16

Summary of Raw Wastewater Characterization Data for Barge/Hopper Facilities

Priority Mean Minimum Maximum Number of Number of

Pollutant Concentration Concentration Concentration Times Times

Code Analyte Units (a) (b) (c) Detected Analyzed

Semivolatile Organics

P066 Bis (2-ethylhexyl) Phthalate μg/L 43 43 43 1 1

Metals

Aluminum μg/L 15,000 15,000 15,000 1 1

P115 Arsenic μg/L 51 51 51 1 1

Barium μg/L 150 150 150 1 1

P117 Beryllium μg/L 4.9 4.9 4.9 1 1

Bismuth μg/L 46 46 46 1 1

Boron μg/L 160 160 160 1 1

P118 Cadmium μg/L 11 11 11 1 1

Calcium μg/L 280,000 280,000 280,000 1 1

Cerium μg/L 380 380 380 1 1

P119 Chromium μg/L 130 130 130 1 1

P120 Copper μg/L 62 62 62 1 1

Erbium μg/L 27 27 27 1 1

Europium μg/L 2.9 2.9 2.9 1 1

Gadolinium μg/L 67 67 67 1 1

Gold μg/L 54 54 54 1 1

Hexavalent Chromium mg/L 0.046 0.046 0.046 1 1

Holmium μg/L 45 45 45 1 1

Iridium μg/L 240 240 240 1 1

Iron μg/L 87,000 87,000 87,000 1 1
6-65

Table 6-16 (Continued)

Section 6.0 - Water Use and Wastewater Characterization

Priority Mean Minimum Maximum Number of Number of

Pollutant Concentration Concentration Concentration Times Times

Code Analyte Units (a) (b) (c) Detected Analyzed

Lanthanum μg/L 50 50 50 1 1

Lithium μg/L 50 50 50 1 1

Lutetium μg/L 3.6 3.6 3.6 1 1

Magnesium μg/L 31,000 31,000 31,000 1 1

Manganese μg/L 2,900 2,900 2,900 1 1

Molybdenum μg/L 54 54 54 1 1

P124 Nickel μg/L 110 110 110 1 1

Osmium μg/L 440 440 440 1 1

Phosphorus μg/L 610,000 610,000 610,000 1 1

Platinum μg/L 66 66 66 1 1

Potassium μg/L 31,000 31,000 31,000 1 1

Praseodymium μg/L 79 79 79 1 1

Ruthenium μg/L 1,300 1,300 1,300 1 1

Samarium μg/L 87 87 87 1 1

Silicon μg/L 2,800 2,800 2,800 1 1

P126 Silver μg/L 6.9 6.9 6.9 1 1

Sodium μg/L 150,000 150,000 150,000 1 1

Strontium μg/L 380 380 380 1 1

Sulfur μg/L 150,000 150,000 150,000 1 1

Tantalum μg/L 65 65 65 1 1

Titanium μg/L 450 450 450 1 1

Tungsten μg/L 130 130 130 1 1

Vanadium μg/L 180 180 180 1 1

Ytterbium μg/L 7.2 7.2 7.2 1 1

Yttrium μg/L 72 72 72 1 1
6-66

Table 6-16 (Continued)

Section 6.0 - Water Use and Wastewater Characterization

Priority Mean Minimum Maximum Number of Number of

Pollutant Concentration Concentration Concentration Times Times

Code Analyte Units (a) (b) (c) Detected Analyzed

P128 Zinc μg/L 250 250 250 1 1

Zirconium μg/L 33 33 33 1 1

Classical Pollutants

Ammonia as Nitrogen mg/L 520 520 520 1 1

BOD 5-day mg/L 17 17 17 1 1

Chemical Oxygen Demand (COD) mg/L 640 640 640 1 1

Chloride mg/L 190 190 190 1 1

Fluoride mg/L 20 20 20 1 1

Nitrate/Nitrite mg/L 3.0 3.0 3.0 1 1

Total Dissolved Solids mg/L 2,900 2,900 2,900 1 1

Total Organic Carbon (TOC) mg/L 61 61 61 1 1

Total Phosphorus mg/L 540 540 540 1 1

Total Suspended Solids mg/L 1,400 1,400 1,400 1 1

(a) For samples in which individual pollutants were not detected, the sample detection limit was used in calculating the mean concentration.

(b) Minimum value of detected amounts or detection limits (for samples in which individual pollutants were not detected) from all analyses.

(c) Maximum value of detected amounts or detection limits (for samples in which individual pollutants were not detected) from all analyses.
Section 6.0 - Water Use and Wastewater Characterization

6-67

Table 6-17

Summaries of the Raw Wastewater Characterization Data 

for Each Facility Type

Facility Type Detected Number of Pollutants Detected

Number of Priority Pollutants

Truck/Chemical 55 202

Rail/Chemical 43 180

Barge/Chemical & Petroleum 45 159

Truck/Petroleum 10 67

Truck/Food 7 76

Rail/Food 4 45

Barge/Food 9 68

Barge/Hopper 9 57

Facility Type BOD COD TOC TSS HEM SGT-HEM

Range of Pollutant Concentrations (mg/L)

5

Truck/Chemical 320 to 6,000 830 to 16,000 160 to 3,200 38 to 4,800 6.0 to 5,300 5.0 to 450

Rail/Chemical 260 to 4,200 810 to 20,000 150 to 3,300 230 to 1,400 56 to 5,200 18 to 750

Barge/Chemical 120 to 26,000 130 to 200,000 30 to 53,000 55 to 15,000 37 to 220,000 21 to 98,000

& Petroleum

Truck/Petroleum 48 to 110 580 to 740 28 to 210 130 to 360 22 to 1,200 5.0 to 410

Truck/Food 160 to 5,200 380 to 5,600 86 to 2,500 28 to 800 5.2 to 270 5.0 to 26

Rail/Food NQ 34,000 13,000 27 ND ND

Barge/Food 890 to 6,800 540 to 12,000 1,600 to 260 to 2,000 75 to 1,100 5.0 to 140

3,300

Barge/Hopper 17 640 61 1,400 ND ND

ND - Not detected.

NQ - Not quantitated due to matrix interference.

BOD - Biochemical oxygen demand (5-day). 5 

COD - Chemical oxygen demand.

TOC - Total organic carbon.

TSS - Total suspended solids.

HEM - Hexane extractable material.

SGT-HEM - Silica-gel treated hexane extractable material.
Section 6.0 - Water Use and Wastewater Characterization

6-68

Table 6-18

Pollutants Of Interest By Subcategory

Analyte

Subcategory

Truck/Chemical Rail/Chemical Barge/Chemical Rail/Hopper, and

& Petroleum & Petroleum & Petroleum Food Barge/Hopper

Truck/Hopper,

Volatile Organics

1,1,1-Trichloroethane T

1,2-Dichloroethane T

Acetone T T T

Acrylonitrile T

Benzene T T

Chloroform T T

Ethylbenzene T T T

M-Xylene T T T

Methyl Ethyl Ketone T T

Methyl Isobutyl Ketone T T

Methylene Chloride T T

O- + P-Xylene T T T

Tetrachloroethene T

Toluene T T

Tricloroethene T

Semivolatile Organics

1-Methylfluorene T

1-Methylphenanthrene T T

1,2-Dichlorobenzene T
6-69

Table 6-18 (Continued)

Section 6.0 - Water Use and Wastewater Characterization

Analyte

Subcategory

Truck/Chemical Rail/Chemical Barge/Chemical Rail/Hopper, and

& Petroleum & Petroleum & Petroleum Food Barge/Hopper

Truck/Hopper,

2-Chlorophenol T

2-Isopropylnaphthalene T

2-Methylnaphthalene T T

2,3-Benzofluorene T

2,4-Diaminotoluene T

2,4,6-Trichlorophenol T

3,6-Dimethylphenanthrene T

Acenaphthene T

Acenaphthylene T

Alpha-terpineol T

Anthracene T T

Benzoic Acid T T T

Benzyl Alcohol T

Biphenyl T

Bis(2-ethylhexyl) Phthalate T T

Carbazole T

Di-n-octyl Phthalate T T

Dimethyl Sulfone T T

Fluoranthene T

Fluorene T

Hexanoic Acid T T

N-Decane T T

N-Docosane T T T
6-70

Table 6-18 (Continued)

Section 6.0 - Water Use and Wastewater Characterization

Analyte

Subcategory

Truck/Chemical Rail/Chemical Barge/Chemical Rail/Hopper, and

& Petroleum & Petroleum & Petroleum Food Barge/Hopper

Truck/Hopper,

N-Dodecane T T T

N-Eicosane T T T

N-Hexacosane T T T

N-Hexadecane T T T

N-Octacosane T T

N-Octadecane T T T

N-Tetracosane T T T

N-Tetradecane T T T

N-Triacontane T T

Napthalene T T T

O-Cresol T T

P-Cresol T T

P-Cymene T T

Pentamethylbenzene T

Phenanthrene T T

Phenol T T T T

Pyrene T T

Styrene T T T

Phenoxy-Acid Herbicides

2,4,5-T T T

2,4,5-TP T T

2,4-D T T

2,4-DB (Butoxon) T T
6-71

Table 6-18 (Continued)

Section 6.0 - Water Use and Wastewater Characterization

Analyte

Subcategory

Truck/Chemical Rail/Chemical Barge/Chemical Rail/Hopper, and

& Petroleum & Petroleum & Petroleum Food Barge/Hopper

Truck/Hopper,

Dalapon T T

Dicamba T

Dichlorprop T

Dinoseb T T

MCPA T

MCPP T

Organo-Phosphorous Pesticides

Azinophos Methyl T

Leptophos T

Organo-Halide Pesticides

Acephate T

alpha-BHC T

Benefluralin T

beta-BHC T T

Dacthal (DCPA) T

delta-BHC T

Diallate (a) T T T

Dieldrin T

Endosulfan Sulfate T

Endrin Aldehyde T

gamma-BHC T

gamma-Chlordane T

Pentachoronitrobenzene (PCNB) T T
6-72

Table 6-18 (Continued)

Section 6.0 - Water Use and Wastewater Characterization

Analyte

Subcategory

Truck/Chemical Rail/Chemical Barge/Chemical Rail/Hopper, and

& Petroleum & Petroleum & Petroleum Food Barge/Hopper

Truck/Hopper,

Propachlor T

Propazine T

Terbacil T

Terbuthylazine T

Metals

Aluminum T T T T T

Arsenic T T

Barium T

Boron T T T

Cadmium T T

Calcium T T T T

Chromium T T T T

Copper T T T

Hexavalent Chromium T T

Iron T T T T T

Lead T

Magnesium T T T T

Manganese T T T T T

Mercury T T

Molybdenum T T T

Nickel T T T

Osmium T

Phosphorus T T T T
6-73

Table 6-18 (Continued)

Section 6.0 - Water Use and Wastewater Characterization

Analyte

Subcategory

Truck/Chemical Rail/Chemical Barge/Chemical Rail/Hopper, and

& Petroleum & Petroleum & Petroleum Food Barge/Hopper

Truck/Hopper,

Potassium T T T T

Ruthenium T

Silicon T T T T T

Sodium T T T T T

Strontium T T

Sulfur T T T T

Tin T

Titanium T T T T

Yttrium T

Zinc T T T T T

Dioxins and Furans

1,2,3,4,6,7,8-Heptachorodibenzo-p-dioxin T

1,2,3,4,6,7,8-Heptachlorodibenzo-furan T

Octachlrodibenzo-p-dioxin T T T

Octachlrodibenzofuran T

Classical Pollutants

Adsorbable Organic Halides (AOX) T T T

Ammonia as Nitrogen T T T T T

BOD 5-day T T T T T

Chemical Oxygen Demand (COD) T T T T T

Chloride T T T T T

Fluoride T T T T

Hexane Extractable Material T T T T
6-74

Table 6-18 (Continued)

Section 6.0 - Water Use and Wastewater Characterization

Analyte

Subcategory

Truck/Chemical Rail/Chemical Barge/Chemical Rail/Hopper, and

& Petroleum & Petroleum & Petroleum Food Barge/Hopper

Truck/Hopper,

Nitrate/Nitrite T T T T

SGT-HEM (b) T T T

Surfactants (MBAS) T T T T

Total Dissolved Solids T T T T T

Total Organic Carbon (TOC) T T T T T

Total Phenols T T T T

Total Phosphorus T T T T T

Total Sulfide (Iodometric) T

Total Suspended Solids T T T T T

(a) Diallate represents diallate and/or diallate A and/or diallate B.

(b) EPA does not believe the SGT-HEM treatment performance data to be representative of the subcategory. EPA considers SGT-HEM a pollutant of interest for this

subcategory based on the average raw wastewater concentration for this subcategory.
TEC Interior

Cleaning:

Chemical Solution

TEC Interior

Cleaning: Water

Exterior Cleaning

Water

Hydrotesting Water

Discharge to U.S.

Surface Waters

Disposal by:

 Evaporation

 Land Application

 Deep-Well Injection

 Incineration

Contract Haul to

Treatment Works

Wastewater Treatment

Discharge to

Treatment Works

Source

Water

Fresh

Water

Solution

Make-Up

Key:

Primary Path

Sceondary Path

Recycle & Reuse Stream

Section 6.0 - Water Use and Wastewater Characterization

6-75

Figure 6-1. Water Use Diagram for TEC Operations
Section 7.0 - Pollution Prevention and Wastewater Treatment Technologies

7-1

7.0 POLLUTION PREVENTION AND WASTEWATER TREATMENT

TECHNOLOGIES

This section describes technologies that are used by the Transportation Equipment

Cleaning Industry (TECI) to prevent the generation of wastewater pollutants or reduce the

discharge of wastewater pollutants. Various combinations of these technologies were considered

as the basis for the effluent limitations guidelines and standards for the industry (see Section 8.0).

Three major approaches are used by the TECI to improve effluent quality: 

(1) cleaning process technology changes and controls to prevent or reduce the generation of

wastewater pollutants; (2) flow reduction technologies to decrease wastewater generation and

increase pollutant concentrations, thereby improving the efficiency of treatment system pollutant

removals; and (3) end-of-pipe wastewater treatment technologies to remove pollutants from

transportation equipment cleaning (TEC) wastewater prior to discharge. These approaches are

discussed in the following sections:

C Section 7.1: Pollution prevention controls used by the TECI;

C Section 7.2: Flow reduction technologies used by the TECI;

C Section 7.3: End-of-pipe wastewater treatment technologies used by the

TECI; and

C Section 7.4: References used in this section.

7.1 Pollution Prevention Controls

EPA has defined pollution prevention as source reduction and other practices that

reduce or eliminate pollution at the source. Source reduction includes any practices that reduce

the amount of any hazardous substance or pollutant entering any waste stream or otherwise

released into the environment, or any practice that reduces the hazards to public health and the

environment associated with the release of such pollutants. Data gathered from the Detailed
Section 7.0 - Pollution Prevention and Wastewater Treatment Technologies

7-2

Questionnaire shows that approximately 27% of TEC facilities currently practice water pollution

prevention, and approximately 61% of TEC facilities currently practice heel pollution prevention. 

The principal pollution prevention controls applicable to the TECI are the use of dedicated tanks,

heel reduction, and reduction in the amount or toxicity of chemical cleaning solutions. These

pollution prevention controls are discussed in the following subsections.

7.1.1 Use of Dedicated Tanks

Tank cleanings are performed for two primary purposes: (1) to prevent

contamination of materials from one cargo shipment to the next and (2) to facilitate inspection

and repair. Certain segments of the TECI , such as shippers and carriers, frequently use tanks

dedicated to hauling a single cargo (e.g., gasoline) that require no, or less frequent, cleaning

between loads. Most TEC facilities cannot implement the use of dedicated tanks since it is only

the shipper or carrier offering the container for cleaning that can exercise the use of dedicated

tanks. Benefits from the use of dedicated tanks include:

C Reduced costs as a result of fewer tank cleanings;

C Reduced waste management and disposal costs because heel removal and

disposal are not required;

C Elimination of the generation of tank cleaning wastewater and associated

pollutant discharges; and

C Reduced tank cleaning wastewater treatment costs and/or sewerage fees.

Impediments to the use of dedicated tanks include:

C Product purity concerns that necessitate cleaning to prevent contamination

of subsequent cargos; and

C Financial loss due to inefficient equipment allocation (i.e., dedicated tanks

are precluded from use to transport other cargos).
Section 7.0 - Pollution Prevention and Wastewater Treatment Technologies

7-3

7.1.2 Heel Reduction

Heel is the residual cargo remaining in a tank or container following unloading,

delivery, or discharge of the transported cargo and is the primary source of pollutants in TEC

wastewater. Measures may be taken before, during, and after the tank cleaning process to reduce

the amount of heel that enters the wastewater stream. These heel reduction measures are

described later in this section.

Excessive heels are also an important economic consideration for the TECI. For

example, many cargos are valuable, and any product waste represents a significant loss. In

addition, profits from transporting product and/or cleaning tanks can be offset by large heel

disposal costs. As a result, the TECI has a strong economic incentive to minimize heels.

Heel generation occurs during the unloading of a tank. Since tank unloading

frequently does not occur at the TEC facility, the carrier, shipper, or consignee may have a more

direct control over heel generation than the TEC facility that will ultimately clean the tank and

dispose the heel. TEC facilities can develop a heel minimization program that identifies the

sources of heels and institutes practices that discourage heel generation by carriers, shippers, and

consignees.

Tank cleaning facility personnel cite education of, and communication among, the

carrier, shipper, and consignee as critical components of an effective heel minimization program. 

Carriers, shippers, and consignees may not be aware of the problems associated with excess heels

and may not understand how heel minimization best serves their interests. An effective heel

minimization program is best implemented as a partnership among the carrier, shipper, consignee,

and tank cleaning facility and may include the following components:

C Drivers should be trained to identify excess heels;

C Drivers should perform pre- and post-trip inspections and discuss with the

consignee methods for reducing excess heels;
Section 7.0 - Pollution Prevention and Wastewater Treatment Technologies

7-4

C If excess heel is not resolved with the consignee, the driver should report 

excess heel to the driver’s manager. Drivers should document heel issues

or problems including offloading conditions which may have caused excess

heel;

C Carriers should provide data to the shipper on amounts of heels;

C Facilities should consider heel management options other than disposal,

such as redelivering the product to the consignee or drumming the heel and

returning it to the shipper or consignee;

C Facilities should evaluate any company policies that punish or fine drivers

for excess heel to ensure that the policies do not encourage illicit heel

disposal;

C Drivers should consider inviting shippers to accompany them during

product delivery to gain a first hand perspective and understanding of

factors impacting heel volumes;

C Facilities may refuse or reject tanks for cleaning if excessive heel is present;

C Facilities may charge an extra fee per amount of heel received as an

incentive to minimize heel;

C Facilities may refuse to accept particular cargos for one or more of the

following reasons: federal, state, local, or other environmental permit

limitations; safety considerations; facility cleaning capabilities; and/or

facility wastewater treatment system capabilities;

C The heel minimization programs, pollution prevention plans, and tank

cleaning standard operational procedures should be written and carefully

followed by all personnel involved in heel generation and management; and

C Personnel should undergo ongoing training so that changes in the heel

minimization program and new procedures and policies will not be

overlooked.

Implementation of an effective heel program can provide significant environmental

and economic benefits. In order to achieve the environmental and economic benefits associated

with heel reduction, TEC facilities should employ appropriate heel reduction techniques in
Section 7.0 - Pollution Prevention and Wastewater Treatment Technologies

7-5

addition to implementing an effective heel minimization program. Heel reduction techniques are

discussed in the following paragraphs.

During tank cleaning operations, some TEC facilities incorporate procedures to

remove as much heel as possible so that it can be segregated from the tank cleaning wastewater. 

One procedure, used particularly for tanks that last transported petroleum products, is to steam

the inside of the tank to lower the viscosity of the heel to facilitate draining. The steamed tank is

then drained to remove additional heel. Similarly, tanks, drains, and fittings may be preheated

with steam or hot water to facilitate product draining. Another procedure applicable to certain

cargos is for tank cleaning personnel to enter the tank and manually squeegee heel toward the

valve openings. (Physically entering a tank may not be advisable in many circumstances. 

Personnel must be trained in health and safety procedures and a confined space entry permit may

be required.)

A third procedure is to perform a hot or cold water prerinse (subsequent to

primary heel removal via draining) to enhance heel removal. This procedure uses a short burst of

water (e.g. 5 to 10 seconds) to remove heel from the tank interior. The prerinse wastewater

(containing residual heel) is drained and managed separately from tank cleaning wastewater. Note

that some facilities perform tank prerinses solely as a means to increase the useful life of tank

cleaning solutions (by minimizing solution contamination with heel) rather than as a TEC

wastewater pollution prevention procedure. These facilities do not manage the prerinse

wastewater separately from the other tank interior cleaning wastewaters.

After tank cleaning is complete, facilities employ various heel management

practices (such as reuse, recycle, or disposal) so that heel is managed separately from tank interior

cleaning wastewater. Reuse and recycle may be accomplished by any one of several methods. 

One method is to return the heel to the consignee. Some heels can be reused at the TEC facility. 

For example, fuel and fuel oil heels can be used in TEC facilities’ on-site boilers or in their own

transportation equipment. Heels comprised of soaps, detergents, solvents, acids, or alkalis may be

reused by TEC facilities for tank cleaning, neutralization, or wastewater treatment. Many food
Section 7.0 - Pollution Prevention and Wastewater Treatment Technologies

7-6

grade heels can be recycled as animal feed. Some heels, such as fertilizers, can be segregated,

stored, and sold as product.

Heel that cannot be recycled or reused can be managed separately from tank

interior cleaning wastewater. The most common method of heel disposal is land disposal. This

practice is most often performed with petroleum and coal product heels and dry-bulk cargo heels. 

Heels may also be hauled to a privately owned treatment works, federally owned treatment

works, centralized waste treatment works, ballast water treatment facility, or hazardous waste

treatment, storage, and disposal facility, all of which are frequently better equipped to treat these

wastes.

7.1.3 Reduction in the Amount and Toxicity of Chemical Cleaning Solutions

Many cargo types require the use of chemical cleaning solutions in the tank

cleaning process. In addition to the contaminants contained in the heel removed by chemical

cleaning solutions, the chemicals used in the solutions may themselves be toxic. These chemical

cleaning solutions are a significant source of pollutants in TEC wastewater. By reducing the

amount and toxicity of chemical cleaning solutions used in the tank cleaning process, tank

cleaning facilities can reduce the contribution of cleaning solutions to the total wastewater

pollutant concentrations. These pollution prevention procedures include recirculating and reusing

cleaning solutions, disposing cleaning solutions separately from tank interior cleaning wastewater,

and using less toxic cleaning solutions. These measures are described further in the following

paragraphs.

The majority of TEC facilities that discharge chemical cleaning solutions with their

tank cleaning wastewater recycle and reuse the solutions at least once prior to discharge. Recycle

and reuse is usually achieved through the use of automated cleaning systems or cleaning solution

recirculation loops that allow reuse of the cleaning solutions until their efficacy diminishes below

acceptable levels. This reduces the amount of additional chemical cleaning solution required for

each tank cleaned; instead, smaller amounts of make-up solution are periodically added to replace
Section 7.0 - Pollution Prevention and Wastewater Treatment Technologies

7-7

solution lost in the final rinse or to boost efficacy. As previously mentioned, a hot or cold water

prerinse may also be used to extend the useful life of a chemical cleaning solution, thereby

reducing the total amount of chemical cleaning solution needed for tank cleaning.

Another method of reducing the introduction of chemical cleaning solutions to the

wastewater streams is to capture the spent solutions (both interior and exterior cleaning solutions)

and dispose them off site at a treatment facility that is better equipped to treat these concentrated

chemical wastes than on-site wastewater treatment systems. Off-site disposal can be combined

with the recirculation and reuse of cleaning solutions (described above) to reduce the need for

fresh cleaning solution and to minimize the amount of cleaning solutions that enter the facility

wastewater treatment system.

Many facilities in the TECI substitute less toxic cleaning solutions, where

appropriate, to reduce the amount of toxic pollutants that are introduced to the wastewater

stream. Typically, presolve solutions are the most toxic chemical cleaning solutions and are least

compatible with facility wastewater treatment systems. Presolve usually consists of diesel fuel,

kerosene, or some other petroleum-based solvent and is used to clean hardened or caked-on

products that are not easily removed by other cleaning processes. In many cases, presolve may be

substituted by acidic or caustic solutions to which detergent “boosters” (e.g., glycol ethers or

esters) are added to improve their effectiveness. At some facilities, chemical cleaning solutions

may be eliminated by using steam cleaning or hot or cold water washes for water-soluble cargos

or by extending the process time of cleaning steps that do not use toxic cleaning solutions.

As in the case of heel reduction, these methods to reduce the amount and toxicity

of chemical cleaning solutions benefit from written cleaning process standard operating

procedures and pollution prevention plans that are carefully followed by cleaning personnel. 

Facilities should also conduct ongoing training for cleaning personnel to insure that the

procedures contained in these resources will be practiced at all times.
Section 7.0 - Pollution Prevention and Wastewater Treatment Technologies

7-8

7.2 Flow Reduction Technologies

This section describes technologies that can reduce the volume of wastewater

discharges from TEC facilities. Flow reduction offers the following benefits: (1) increased

pollutant concentrations which increase the efficiency of the wastewater treatment system;

(2) decreased wastewater treatment system equipment sizes, resulting in reduced treatment

system capital and operating and maintenance costs; and (3) decreased water and energy usage. 

Data gathered from the Detailed Questionnaire show that approximately 45% of TEC facilities

currently practice flow reduction/water conservation. Flow reduction technologies applicable to

the TECI serve to reduce the amount of fresh water required for tank cleaning through cleaning

process modifications and/or recycling and reusing process wastewaters in TEC or other

operations. These flow reduction technologies are presented in the following subsections.

7.2.1 High-Pressure, Low-Volume Cleaning Equipment

The use of high-pressure, low-volume cleaning equipment is one of the most

effective tools for reducing water use. The most common type of this equipment is spinner

nozzles, which are nozzles designed to rotate around both vertical and horizontal axes to create

an overlapping spray pattern that cleans the entire interior of the tank. Spinner nozzles are

inserted through the main tank hatch and operated at pressures between 100 pounds per square

inch (psi) and 600 psi to deliver hot or cold water rinses and a variety of cleaning solutions for

tank cleaning final rinses. Spinners can be operated using pulsing pump technology where water

is delivered in bursts of a few seconds, further reducing the volume of water. Washing with highpressure, hand-held wands with stationary nozzles achieves the same result as washing with high

pressure spinner nozzles but requires facility personnel to manually direct the wash solution across

the interior surface of the tank.
Section 7.0 - Pollution Prevention and Wastewater Treatment Technologies

7-9

7.2.2 Monitoring TEC Water Use

Cleaning personnel can monitor the amount of water required for tank cleaning so

that the minimum amount of water is used to clean each specific tank and cargo type. One

approach is to inspect each tank to determine the state and amount of residual cargo remaining

and thereby determine the duration and amount of water required for cleaning. A more general

approach is to have a predetermined water use and cleaning time for each tank type and cargo

combination based on previous tank cleaning experience.

7.2.3 Equipment Monitoring Program

The implementation of an equipment monitoring program can significantly reduce

fresh water requirements by eliminating water waste. Pumps, hoses, nozzles, water storage tanks,

and cleaning solution tanks may develop leaks and require prompt attention by facility personnel. 

Preventative maintenance, periodic inspection, and prompt repair of leaks can help ensure that no

unnecessary water waste occurs.

7.2.4 Cleaning Without Use of Water

Dry cleaning processes (i.e., cleaning processes that do not require water) are

effective for removing some cargos, particularly dry-bulk goods and viscous liquids. Mechanical

devices may be used to vibrate hoppers to improve heel removal. Some dry cleaning processes,

particularly applicable to hopper or tank barges, include manual operations to shovel or sweep

dry-bulk cargos, or mop or squeegee liquid cargos to remove as much residual material as

possible. (Physically entering a tank may not be advisable in many circumstances. Personnel

must be trained in health and safety procedures and a confined entry space entry permit may be

required.) Depending on the effectiveness of these dry cleaning processes, the need for

subsequent tank cleaning with water may be eliminated. At a minimum, these techniques will

reduce the amount of water and cleaning solution required for tank cleaning.
Section 7.0 - Pollution Prevention and Wastewater Treatment Technologies

7-10

7.2.5 Cascade Tank Cleaning

Facilities that primarily clean tanks used to transport the same cargos (e.g.,

petroleum facilities) often operate “cascading” tank cleaning processes. In these processes, the

most contaminated TEC process wastewater is used for initial tank rinses, with initial tank rinse

wastewater routed to disposal. Clean water, or relatively clean TEC process wastewater, is used

for final tank rinses, with final tank rinse water reused as an initial tank rinse when cleaning

subsequent tanks. Through this process, wash water is used at least twice prior to discharge or

disposal.

7.2.6 Wastewater Recycle and Reuse

In addition to cascading tank cleaning processes, TEC facilities may incorporate

other methods of water recycle and reuse to reduce or eliminate the need for fresh process water. 

Wastewater streams most commonly recycled and reused for TEC operations include tank interior

cleaning wastewater, hydrotesting water, uncontaminated stormwater, and noncontact cooling

water. If hydrotesting water, uncontaminated stormwater, and noncontact cooling water are

segregated from tank interior cleaning wastewater, these wastewaters do not require extensive

treatment prior to recycle and reuse.

Tank interior cleaning wastewater generated by cleaning tanks used to transport

petroleum products can typically be reused as tank interior cleaning water after treatment by

oil/water separation and activated carbon treatment. Wastewater generated by cleaning tanks that

last transported chemical products generally requires more extensive treatment prior to reuse as

source water in TEC operations. Final tank rinse water may also be used as cleaning solution

make-up water. 

Tank hydrotesting wastewater may be reused as future hydrotesting water by

pumping to a storage tank between tests. Because hydrotesting usually requires that the entire
Section 7.0 - Pollution Prevention and Wastewater Treatment Technologies

7-11

tank be filled (approximately 5,000 gallons for an intermediate sized tank truck), the reuse of

hydrotest wastewater can save substantial volumes of fresh water.

7.3 End-of-Pipe Wastewater Treatment Technologies

End-of-pipe wastewater treatment includes physical, chemical, and biological

processes that remove pollutants from TEC wastewater prior to discharge to a receiving stream

or POTW. Many TEC facilities use pretreatment, primary treatment, biological treatment, and/or

advanced treatment for end-of-pipe treatment of wastewater. [See Table C-6 of the Data Element

Dictionary for the Detailed Questionnaire (1) for the specific technologies included within these

technology classifications.] Typical end-of-pipe treatment currently used by the TECI includes

pretreatment and primary treatment. TEC facilities that operate biological and/or advanced

treatment units are commonly those that practice extensive water and wastewater recycle and

reuse or discharge directly to U.S. surface waters.

The following subsections describe the major wastewater treatment technologies

used by the TECI. Each subsection includes a general description of how the technology works

and what types of pollutants the technology treats. The number of TEC facilities that use each

treatment technology is presented in the following table. The numbers of facilities presented in

this table have been adjusted using statistical scaling factors and therefore represent the entire

industry rather than only the surveyed facilities. The following subsections describe each of these

technologies in the order that they appear in the table.

Treatment Technology the Treatment Technology

Number of Facilities (% of Discharging Facilities) That Utilize

Gravity Settling 393 (57%)

pH Adjustment 303 (44%)

Equalization 289 (42%)

Oil/Water Separation 251 (36%)

Sludge Dewatering 195 (28%)

Dissolved Air Flotation 175 (25%)
Section 7.0 - Pollution Prevention and Wastewater Treatment Technologies

Treatment Technology the Treatment Technology

Number of Facilities (% of Discharging Facilities) That Utilize

7-12

Coagulation/Flocculation 169 (24%)

Filtration 166 (24%)

Clarification 157 (23%)

Biological Oxidation 60 (9%)

Chemical Precipitation/Separation 43 (6%)

Grit Removal 30 (4%)

Chemical Oxidation 16 (2%)

Activated Carbon Adsorption 4 (<1%)

Membrane Filtration 1 (<1%)

7.3.1 Gravity Settling

Gravity settling, or sedimentation, removes suspended solids from TEC process

wastewater by maintaining wastewater in a quiescent state so that contaminants can separate by

density. Gravity settling is utilized by more than half of the TEC facilities (57%). During gravity

settling, wastewater is typically collected in a tank or catch basin, where it is detained for a period

of time, allowing solids with a specific gravity higher than water to settle to the bottom of the

tank and solids with a specific gravity lower than water to float to the surface. The effectiveness

of gravity separation depends upon the characteristics of the TEC wastewater and the length of

time the wastewater is held in the treatment unit. Properly designed and operated gravity

separation units are capable of achieving significant reductions of suspended solids and 5-day

biochemical oxygen demand in many TEC wastewaters. 

Some facilities add chemicals, such as lime or polymers, to aid in the settling of

solids. The solids that settle out or float to the surface may be removed from the unit

continuously using automatic scrapers or skimmers. Alternatively, the units may be periodically

shut down and the solids removed manually. 
Section 7.0 - Pollution Prevention and Wastewater Treatment Technologies

7-13

7.3.2 pH Adjustment

Adjustment of pH is a process in which chemicals are added to a wastewater to

make it acidic or basic or to neutralize acidic or basic wastewaters. Of the total TEC facilities,

44% utilize pH adjustment. A pH adjustment system normally consists of a small tank in which

the wastewater pH is adjusted by mixing and chemical addition under the control of a pH meter. 

To adjust the pH of the wastewater, either caustic or acidic chemicals are added to the mixing

tank. Because many treatment technologies used in the TECI are sensitive to pH fluctuations, pH

adjustment may be required as part of an effective treatment system. Some treatment

technologies require a high pH (e.g., chemical precipitation), while others require a neutral pH

(e.g., biological oxidation). In addition, the pH of the final effluent from these technologies must

often be adjusted prior to discharge to meet permit conditions for wastewater discharge. 

7.3.3 Equalization

Equalization involves homogenizing variable wastewaters over time to control

fluctuations in flow and pollutant characteristics, thereby reducing the size and cost and improving

the efficiency of subsequent treatment units. Approximately 42% of TEC facilities incorporate

equalization in their wastewater treatment processes. Equalization units include tanks which are

often equipped with agitators (e.g., impeller mixers and air spargers) to mix the wastewater and to

prevent solids from settling at the bottom of the unit. Chemicals may also be added to the

equalization units to adjust pH, as necessary, for further treatment. 

Equalization units can allow downstream treatment units to be sized and operated

on a continuous-flow basis, because they can minimize the variation in the characteristics of

untreated wastewaters. This reduces the probability of treatment system upsets and allows

treatment systems to be optimized for a narrower range of influent wastewater characteristics. 

The amount of residence time required by an equalization unit to achieve optimum effects is

dependent upon the specific characteristics and daily flow patterns of the wastewater.
Section 7.0 - Pollution Prevention and Wastewater Treatment Technologies

7-14

7.3.4 Oil/Water Separation

Oil/water separation uses the difference in specific gravity between oil and water to

remove free or floating oil from wastewater. More than one-third of TEC facilities (36%) use

oil/water separation as a method of removing varying levels of oil and grease. 

The most common mechanism for oil removal is an oil skimmer. Some skimming

devices work by continuously contacting the oil with a material, such a belt or rope, onto which

the oil readily adheres. As the material passes through the floating oil layer, the oil coats the

surface of the material. The oil-coated material then passes through a mechanism that scrapes the

oil from the material into an oil collection unit. Another type of skimming device uses overflow

and underflow baffles to skim the floating oil layer from the surface of the wastewater. An

underflow baffle allows the oil layer to flow over into a trough for disposal or reuse while most of

the water flows underneath the baffle. This is followed by an overflow baffle, which is set at a

height relative to the first baffle such that only the oil-bearing portion will flow over the first baffle

during normal operation.

A standard oil/water separator utilized by the TECI is an American Petroleum

Institute (API) oil/water separator. A typical API oil/water separator is rectangular and

constructed with surface skimmers for oil removal and a bottom sludge rake or sludge auger for

solids removal. It is designed such that lighter floating matter rises and remains on the surface of

the water until removed, while the liquid flows out continuously under partitions or through deep

outlets. Figure 7-1 presents a diagram of an API oil/water separator.

Another common type of oil/water separator used by the TECI is a coalescing

oil/water separator, which is used to remove oil droplets too finely dispersed for conventional

gravity separation and skimming technology. These units are comprised of a series of corrugated

and/or inclined plates or tubes arranged parallel to one another and transverse to the flow of

water. The plates and tubes are often built of materials that attract oil away from the water, such

as polypropylene, ceramic, or glass. As the oil droplets impinge on the surfaces of the plates or
Section 7.0 - Pollution Prevention and Wastewater Treatment Technologies

7-15

tubes, they coalesce into a layer of oil that flows or is pumped from the unit. Figure 7-2 presents

a diagram of a coalescing oil/water separator.

Due to the complex nature of TEC wastewater and the presence of detergents and

high-pH chemicals, oils may form a stable emulsion which does not separate well in a gravity or

coalescing separator. Stable emulsions require pH adjustment, the addition of chemicals, and/or

heat to break the emulsion. The method most commonly used by the TECI to perform oil/water

separation on stable emulsions is acid cracking. Acid cracking entails the addition of sulfuric or

hydrochloric acid to the tank containing the oil mixture until the pH reaches 1 or 2. A coagulant

may also be added during acid cracking to aid in oil/water separation. After the emulsion bond is

broken, the free oil floats to the top of the tank where it is removed by a skimming device.

7.3.5 Sludge Dewatering

Sludge dewatering reduces sludge volume by decreasing its water content. 

Various methods of this particular process are employed by 28% of the TECI. Sludge dewatering

may involve simple techniques such as the use of sludge drying beds, or it may be accomplished

through more complicated mechanical techniques, including filter presses, rotary vacuum filters,

and centrifuges. The decrease in sludge volume achieved through sludge dewatering substantially

reduces the cost for sludge disposal and allows for easier sludge handling.

7.3.5.1 Sludge Drying Bed

The sludge drying bed process involves applying sludge to land, collecting the

supernatant after solids settle, and allowing the sludge to dry. The sludge cake may then be

scraped manually or by a front-end loader and dumped into a truck. Disadvantages to using a

sludge drying bed are potential odor problems, large land area requirements, and the cost of labor

to remove the dried cake. The main components of a sludge drying bed include watertight walls

extending above the surface of the bed; an opening in the wall for entrance of a front-end loader

to scrape up the sludge cake; drainage trenches filled with a coarse sand bed supported on a
Section 7.0 - Pollution Prevention and Wastewater Treatment Technologies

7-16

gravel filter with a perforated pipe underdrain; paved areas on both sides of the trenches with a

slope for gravity drainage; and a sludge inlet and supernatant draw-off (2). The supernatant

collected from the sludge may be returned as influent to wastewater treatment. Depending on

sludge content and climate conditions for evaporation, sludge drying times may range from

several days to weeks.

7.3.5.2 Plate-and-Frame Filter Press

The most widely used filter press is referred to as the plate-and-frame filter press. 

A filter press uses positive pressure provided by a mechanical device, such as a hydraulic ram, to

drive water contained in the sludge through a filter medium. This type of unit comprises a series

of recessed plates that are affixed with a filter medium (e.g., filter cloth) and are stacked together

on a horizontal shaft. The plates form a series of spaces separated by the filter media and are

otherwise sealed to withstand the internal pressures created during the filtration cycle. As the

sludge is forced through the system, the water passes through the filter medium and is discharged

through the filtrate port while the solids become trapped within the spaces, forming a dewatered

cake against the filter medium.

When the cycle is over, the plates are separated, and the dewatered cake is

released from the spaces into a collection bin. Removing the cake from the filter media is often

performed manually by an operator. The filter press filtrate that results from the dewatering is

usually piped back to the beginning of the treatment system. Figure 7-3 presents a diagram of a

plate-and-frame filter press. 

7.3.5.3 Rotary Vacuum Filter

A rotary vacuum filter consists of a cylindrical drum with a filter medium, such as

cloth or wire mesh, around its perimeter. The drum is horizontally suspended within a vessel and

is partially submerged in the sludge. The drum is rotated and the filter surface contacts the sludge

within the vessel while a vacuum is drawn from within the drum. This draws the water through
Section 7.0 - Pollution Prevention and Wastewater Treatment Technologies

7-17

the filter medium toward the axis of rotation and discharges it through a filtrate port. The solids

become trapped against the filter medium, forming a dewatered cake around the outside of the

drum. The dewatered cake is continuously scraped from the drum into a collection bin. Figure 7-

4 presents a diagram of a rotary vacuum filter.

7.3.5.4 Centrifuge

Another method of sludge dewatering is centrifuging. Centrifuge designs are

based on the principal of centrifugal force. To settle and separate higher density solids from

wastewater, sludge is spun or rotated in the centrifuge, collected on the inner wall of the

mechanism, and then scraped from the walls of the centrifuge. Certain wastewater treatment

chemicals may be added to sludge in the centrifuge to bring additional pollutants out of solution

and form an insoluble floc (e.g., as in chemical precipitation) that is also separated by the

centrifugal forces. 

7.3.6 Dissolved Air Flotation

Flotation is the process of influencing suspended particles to rise to the wastewater

surface where they can be collected and removed. Dissolved air flotation is utilized by

approximately 25% of TEC facilities in their treatment systems. During flotation, gas bubbles

introduced into the wastewater attach themselves to suspended particles, thereby reducing their

specific gravity and causing them to float. Flotation processes are utilized because they can

remove suspended solids that have a specific gravity slightly greater than 1.0 more quickly than

sedimentation.

Dissolved air flotation (DAF) is one of several flotation techniques used for

wastewater treatment to extract free and dispersed oil and grease, suspended solids, and some

dissolved pollutants from process wastewater. In DAF, two modes of operation may be

employed to pressurize wastewater. In recycle pressurization, air is injected into a portion of

recycled, clarified effluent and dissolved into a wastewater stream in an enclosed tank or pipe,
Section 7.0 - Pollution Prevention and Wastewater Treatment Technologies

7-18

pressurizing the wastewater. In full flow pressurization, all of the influent wastewater is injected

with air in a surge tank and is pumped to a retention tank under pressure to dissolve the air into

the wastewater.

When the wastewater enters the flotation tank, the pressure is reduced, which

causes fine air bubbles to be released. These bubbles make contact with the suspended particles

via two separate mechanisms. The first mechanism involves the use of a flocculant, which causes

rising air bubbles to be trapped inside flocculated masses as they increase in size. The second

mechanism involves the intermolecular attraction between the solid particle and the air bubble,

which causes the solid to adhere to the bubble. In either mechanism, the low density of the air

bubble causes it to rise to the surface of the flotation tank with the flocculated or adhered solids

attached. 

DAF units are equipped with rakes that scrape the floc from the surface and into a

sludge collection vessel, where it is subsequently pumped to a dewatering unit and later disposed. 

A sludge auger may be included in the DAF unit to remove solids that have settled to the bottom

of the tank. Units are typically operated on a continuous basis and incorporate chemical mix

tanks (if flocculants are used), flotation vessels, and sludge collection tanks in a single enclosed

unit. Figure 7-5 presents a diagram of a DAF unit with pressurized recycle.

7.3.7 Coagulation/Flocculation

Coagulation and flocculation are processes that cause suspended solids in

wastewater to coalesce. The coalesced particles tend to settle out of the wastewater more quickly

than particles that have not undergone coagulation/flocculation. Approximately 24% of TEC

facilities use coagulation/flocculation. 

Coagulation consists of the addition and rapid mixing of a “coagulant,” the

destabilization of colloidal and fine suspended solids, and the initial aggregation of those particles. 

Flocculation is the slow stirring to complete aggregation of those particles and form a floc which
Section 7.0 - Pollution Prevention and Wastewater Treatment Technologies

7-19

will in turn settle by gravity (3). After rapid mixing, coagulant aids, such as polyelectrolytes, are

often added to reduce the repulsive forces between the charged particles. Flocculation may also

be accomplished by adding such materials as lime or sodium silicate to form loose agglomerates

that carry the fine particles down with them. These settled solids form a sludge; therefore,

coagulation/flocculation is typically followed by clarification to remove solids (see Section 7.3.9).

7.3.8 Filtration

Filtration is used to remove solids from wastewater by passing the wastewater

through a material that retains the solids on, or within, itself. The percentage of TEC facilities

that use filtration (excluding membrane filtration, which is discussed separately in Section 7.3.15)

is 24 percent. A wide variety of filter types are used by the TECI including media filters (e.g.,

sand, gravel, charcoal), bag filters, and cartridge filters. A filter press (see Section 7.3.5) may be

used for in-line wastewater filtration. The flow pattern of filters is usually top-to-bottom;

however, upflow filters, horizontal filters, and biflow filters are also used. 

The complete filtration process typically involves two phases: filtration and

backwashing. As the filter becomes saturated with trapped solids, the efficiency of the filtration

process decreases. As the head loss across the filter bed (i.e., measure of solids trapped in the

filter) increases to a limiting value, the end of the filter run is reached, and the filter must be

backwashed to remove the suspended solids in the bed. During backwashing, the flow through

the filter is reversed so that the solids trapped in the media are dislodged and can exit the filter. 

The bed may also be agitated with air in order to aid in solids removal. The backwash water is

then recycled back into the wastewater feed stream. 

The type of filter used depends on various factors such as the operating cycle (i.e.,

whether the wastewater is being filtered continuously or in batches) or the nature of the solids

passing through the filter. The filter type can also be determined by the filtration mechanism (i.e.,

whether the filtered solids are stopped at the surface of the medium and accumulate to form a

filter cake or are trapped within the pores or body of the filter).
Section 7.0 - Pollution Prevention and Wastewater Treatment Technologies

7-20

7.3.9 Clarification

Clarification involves holding wastewater in a quiescent state so that contaminants

can separate by density. Clarification uses the same principles for treatment as gravity settling but

differs from gravity settling in that it is typically used after coagulation/flocculation and/or

biological treatment. Approximately 23% of the TECI use clarification in their wastewater

treatment systems.

Clarifiers consist of settling tanks and are commonly equipped with a sludge

scraper mounted on the floor of the clarifier to rake sludge into a sump for removal. The bottom

of the clarifier may also be sloped to facilitate sludge removal. Clarification can be used as either

a pre-or post-treatment step for various operations to aid in removing settleable solids, free oil

and grease, and other floating material. Clarifiers are often referred to as primary or secondary

sedimentation tanks. Primary clarification is used to remove settleable solids from raw

wastewater or wastewater treated by coagulation/flocculation. Secondary clarification is normally

used in activated sludge systems to remove biomass. A portion of the sludge biomass is often

recycled from the secondary clarifier back to the activated sludge biological oxidation unit (see

Section 7.3.10). Secondary clarification may include the addition of chemicals to aid in the

coagulation and agglomeration of suspended solids following biological treatment. Polymers are

typically used as coagulant aids, but other coagulants (e.g., alum) may also be used. Figure 7-6

presents a diagram of a clarifier.

7.3.10 Biological Oxidation

Biological oxidation is a reaction caused by biological activity which results in a

chemical combination of oxygen with organic matter to yield relatively stable end products such

as carbon dioxide and water (3). Approximately 9% of the TECI uses biological oxidation to

treat wastewater. In wastewater treatment, this is most commonly accomplished with an

activated sludge treatment system, but aerated lagoons, trickling filters, and rotating biological

contactors (RBCs) can also be used to perform biological oxidation of wastewater. 
Section 7.0 - Pollution Prevention and Wastewater Treatment Technologies

7-21

An activated sludge treatment system normally consists of an aeration basin, a

secondary clarifier, and a sludge recycle line. Equalization of flow, pH, temperature, and

pollutant loading is necessary to obtain consistent, adequate treatment. A settling tank may be

used to remove settleable solids prior to aeration. An aerobic bacterial population is maintained in

the aeration basin where oxygen, recycled sludge, and nutrients (usually nitrogen and phosphorus)

are added to the system. Prior to the aeration basin, oxygen may also be added to wastewater in

preaeration tanks. Oxygen is normally supplied by aerators that also provide mixing to help keep

microorganisms in suspension. The activated sludge-wastewater mixture, or “mixed liquor,” is

then sent to a secondary clarifier that controls the amount of suspended solids discharged and

provides recycled sludge back to the aeration basin to keep an optimal concentration of

acclimated microorganisms in suspension. 

Sludge produced by these systems generally consists of biological waste products

and expired microorganisms and is typically discharged from the clarifier. However, under certain

operating conditions, this sludge may accumulate in the aeration basin and may require periodic

removal. Figure 7-7 presents a diagram of an activated sludge system.

7.3.11 Chemical Precipitation/Separation

Chemical precipitation/separation is a process that renders dissolved pollutants

insoluble and uses the resulting phase differential to separate pollutants from wastewater. 

Approximately 6% of TEC facilities use chemical precipitation/separation. During chemical

precipitation processes typical in the TECI, insoluble solid precipitates are formed from the

organic or inorganic compounds in the wastewater through the addition of chemicals and/or pH

adjustment. Sedimentation or filtration then separates out the solids from the wastewater. 

Chemical precipitation is generally carried out in four phases: 

1. Addition of the chemical to the wastewater; 

2. Rapid (flash) mixing to homogeneously distribute the chemical; 

3. Slow mixing to promote particle growth by flocculation; and 

4. Sedimentation or filtration to remove the flocculated solid particles.
Section 7.0 - Pollution Prevention and Wastewater Treatment Technologies

7-22

Chemical precipitation systems normally consist of a rapid mixer, a chemical feed

system to add the precipitation agent, a flocculation tank, and a sedimentation tank. In batch

chemical precipitation systems, the treated wastewater is held in the unit long enough to allow the

solids to settle out. The water is then pumped from the unit, and the resulting sludge is removed

for further dewatering and subsequent disposal.

Precipitation agents, such as polyaluminum chloride, ferric chloride, and lime,

work by reacting with pollutant cations (e.g., metals) and some anions to convert them into an

insoluble form for subsequent removal by gravity settling. The pH of the wastewater also affects

how much pollutant mass is precipitated, as pollutants precipitate more efficiently in different pH

ranges. Figure 7-8 presents a diagram of a batch chemical precipitation unit. 

7.3.12 Grit Removal

Grit removal is the process of eliminating heavy, suspended material from

wastewater. Grit removal is only used by 4% of TEC facilities. Grit removal differs from gravity

settling/clarification in that it is typically performed in a smaller tank and has a shorter retention

time. Removal is accomplished using a settling chamber and a collection mechanism, such as a

rake. Grit chambers may also be aerated to remove floatable solids. This unit operation is

performed to prevent excess wear on pumps, accumulations in aeration tanks and clarifiers, and

clogging of sludge piping (3).

7.3.13 Chemical Oxidation

Chemical oxidation is used in wastewater treatment to destroy priority pollutants

or other organic pollutants by oxidizing them with an oxidizing agent. Approximately 2% of TEC

facilities use chemical oxidation. Chemical oxidation systems consist of a tank, a mixer, and a

chemical feed system to add the oxidizing agent. During the chemical oxidation reaction, one or

more electrons are transferred from the oxidizing chemical (electron donor) to the targeted

pollutants (electron acceptor), causing their destruction. An oxidant often used by the TECI is
Section 7.0 - Pollution Prevention and Wastewater Treatment Technologies

7-23

hydrogen peroxide. Other oxidants used in industry include chlorine, ozone, and potassium

permanganate.

7.3.14 Activated Carbon Adsorption

Activated carbon removes organic constituents from wastewater by physical and

chemical forces that bind the constituents to the carbon surface and internal pores. Activated

carbon adsorption is widely used in the treatment of industrial wastewaters because it adsorbs an

extensive variety of organic compounds. However, less than 1% of TEC facilities currently use

activated carbon adsorption. The term “activated carbon” refers to carbon materials, such as coal

or wood, that are processed through dehydration, carbonization, and oxidation to yield a material

that is highly adsorbent due to a large surface area and a high number of internal pores per unit of

mass. In general, organic constituents possessing certain properties (e.g., low water solubility and

high molecular weight) and certain chemical structures (e.g., aromatic functional groups) are

amenable to treatment by activated carbon adsorption.

An activated carbon adsorption system usually consists of a column of bed

containing the activated carbon. The most common form of activated carbon for wastewater

treatment is granular. Powdered activated carbon is used less frequently for wastewater treatment

due to the difficulty of regeneration, reactor system design considerations, and its tendency to

plug more easily than granular activated carbon, although it may be used in conjunction with

biological treatment systems.

The carbon adsorption capacity (i.e., the mass of the contaminant adsorbed per

mass of carbon) for specific organic contaminants is related in part to the characteristics of each

compound. Competitive adsorption of mixed compounds has a major effect on adsorption (i.e.,

the carbon may begin preferentially adsorbing one compound over another compound and may

even begin desorbing the other compound). Process conditions, process design factors, and

carbon characteristics also affect adsorption capacity.
Section 7.0 - Pollution Prevention and Wastewater Treatment Technologies

7-24

When the adsorption capacity of the carbon is exhausted, the spent carbon is either

disposed or regenerated; the choice is generally determined by cost. Carbon may be regenerated

by removing the adsorbed organic compounds from the carbon through steam regeneration,

thermal regeneration, or physical/chemical regeneration. The most common methods to

regenerate carbon used for wastewater treatment are thermal and steam regeneration. These

methods volatilize the organic compounds that were adsorbed onto the carbon. Afterburners are

required to ensure destruction of the organic vapors. A scrubber may also be necessary to

remove particulates from the air stream. Physical/chemical regeneration uses a solvent, which can

be a water solution, to remove the organic compounds.

7.3.15 Membrane Filtration

Membrane filtration is a term applied to a group of processes that use a pressuredriven, semipermeable membrane to separate suspended, colloidal, and dissolved solutes from a

process wastewater. Less than 1% of TEC facilities use membrane filtration. During operation,

the feed solution flows across the surface of the membrane. “Clean” water permeates the

membrane by passing through pores in the membrane, leaving the contaminants and a portion of

the feed behind. The clean or treated water is referred to as the permeate or product water

stream, while the stream containing the contaminants is called the concentrate, brine, or reject

stream. The size of the pores in the membrane is selected based on the type of contaminant to be

removed. The pore size will be relatively large for the removal of precipitates or suspended

materials, or very small for the removal of inorganic salts or organic molecules. Figure 7-9

presents a diagram of membrane filtration unit. 

For industrial applications, the product water stream will either be discharged or,

more likely, recycled or reused. The reject stream is normally disposed, but if the reject is of

suitable quality, it can also be recycled or reused. Types of membrane filtration systems available

include microfiltration, ultrafiltration (UF), and reverse osmosis (RO). The applicability of each

of these membrane filtration technologies to the TECI is discussed below.
Section 7.0 - Pollution Prevention and Wastewater Treatment Technologies

7-25

7.3.15.1 Microfiltration

Microfilters are generally capable of removing suspended solids and colloidal

matter with diameters of greater than 0.1 microns and are commonly made from woven polyester

or ceramic materials. The systems can be operated at feed pressures of less than 50 pounds per

square inch gauge (psig). The feed stream does not require extensive pretreatment, and the

membrane is relatively resistant to fouling and easily cleaned. Microfilters are capable of

recovering up to 95% of the feed stream as product water.

7.3.15.2 Ultrafiltration

Ultrafiltration is similar to microfiltration except that a UF membrane has smaller

pores. The “tightest” UF membrane is typically capable of rejecting molecules having diameters

of greater than 0.001 microns. The system operates at a feed pressure of 50 to 200 psig. UF

systems are capable of recovering from 90 to 95% of the feed as product water.

7.3.15.3 Reverse Osmosis

Reverse osmosis systems differ from microfiltration and ultrafiltration systems in

that they have the ability to reject dissolved organic and inorganic molecules. RO systems are

generally capable of removing particles with diameters less than 0.001 microns. RO membranes

are commonly made from cellulose acetate; however, polysulfone, polyamide, or other polymeric

materials may also be used. Reverse osmosis systems can be operated at feed pressures of 250 to

600 psig. RO membranes are very susceptible to fouling and may require extensive pretreatment

of wastewater to remove wastewater constituents that can cause fouling. Oxidants (which may

attack the membrane), particulates, oil, grease, and other materials that could cause a film or scale

to form, plugging the membrane, must be removed by pretreatment. Reverse osmosis systems are

capable of recovering up to 50 to 90% of the feed stream as product water. The dissolved solids

concentration in the feed determines the percent recovery that can be obtained as well as the

required feed pressure to operate the system.
Section 7.0 - Pollution Prevention and Wastewater Treatment Technologies

For those references included in the administrative record supporting the TECI rulemaking, the document control 1

number (DCN) is included in parentheses at the end of the reference.

7-26

7.4 References1

1. Eastern Research Group, Inc. Data Element Dictionary for Part A of the U.S.

Environmental Protection Agency 1994 Detailed Questionnaire for the

Transportation Equipment Cleaning Industry, April 4, 1997 (DCN T10271).

2. Viessman, Warren, Jr. and Mark J. Hammer. Water Supply and Pollution Control,

Fifth Edition. Harper Collins College Publishers. New York, NY, 1993.

3. Reynolds, Tom and Paul Richards. Unit Operations and Processes in

Environmental Engineering. PWS Publishing. Boston, MA, 1996.
7-27

Section 7.0 - Pollution Prevention and W

Figure 7-1. API Oil/Water Separator
7-28

Section 7.0 - Pollution Prevention and W

Figure 7-2. Coalescing Oil/Water Separator
7-29

Section 7.0 - Pollution Prevention and W

Figure 7-3. Plate-and-Frame Filter Press
7-30

Section 7.0 - Pollution Prevention and W

Figure 7-4. Rotary Vacuum Filter
7-31

Section 7.0 - Pollution Prevention and W

Figure 7-5. Dissolved Air Flotation Unit with Pressurized Recycle
7-32

Section 7.0 - Pollution Prevention and W

Figure 7-6. Clarifier
7-33

Section 7.0 - Pollution Prevention and W

Figure 7-7. Activated Sludge System
7-34

Section 7.0 - Pollution Prevention and W

Figure 7-8. Batch Chemical Precipitation Unit
7-35

Section 7.0 - Pollution Prevention and W

Figure 7-9. Membrane Filtration Unit
Section 8.0 - Development of Control and Treatment Options

8-1

8.0 DEVELOPMENT OF CONTROL AND TREATMENT OPTIONS

This section describes the combinations of pollution prevention practices and endof-pipe wastewater treatment that EPA configured as technology options for consideration as

bases for the Transportation Equipment Cleaning Industry (TECI) effluent limitations guidelines

and standards. (Note that water conservation practices, which are not part of EPA’s technology

bases, are incorporated into EPA’s costing methodology for several subcategories. See Section

9.2.7 for additional information.) EPA developed technology options for the following:

C Best practicable control technology currently available (BPT);

C Best conventional pollutant control technology (BCT);

C Best available technology economically achievable (BAT);

C New source performance standards (NSPS);

C Pretreatment standards for existing sources (PSES); and

C Pretreatment standards for new sources (PSNS).

Technology bases for each option for each regulation were selected from the

pollution prevention and wastewater treatment technologies described in Section 7.0. Sections

8.2 through 8.7 discuss the regulatory options that were considered for each of the regulations

listed above. 

8.1 Introduction

The final regulations establish quantitative limits on the discharge of pollutants

from industrial point sources. The applicability of the various limitations for the TECI is

summarized below:
Section 8.0 - Development of Control and Treatment Options

8-2

Direct Indirect Existing New Conventional Nonconventional

Discharge Discharge Source Source Pollutants Pollutants

Priority and

BPT U U U U

BAT U U U

BCT U U U

NSPS U U U U

PSES U U U

PSNS U U U

All of these regulations are based upon the performance of specific technologies but do not

require the use of any specific technology. The regulations applicable to direct dischargers are

effluent limitations guidelines which are applied to individual facilities through National Pollutant

Discharge Elimination System (NPDES) permits issued by EPA or authorized states under

Section 402 of the Clean Water Act (CWA). The regulations applicable to indirect dischargers

are standards and are administered by local permitting authorities (i.e., the government entity

controlling the publicly-owned treatment works (POTW) to which the industrial wastewater is

discharged). The pretreatment standards control pollutants that pass through or interfere with

POTWs.

EPA incorporated the following pollution prevention element into all technology

options. 

C Good Heel Removal and Management Practices. The benefits of good heel

removal and management practices include the following:

— Prevention of pollutants from entering the wastewater stream (i.e.,

maximum removal of heel prior to tank cleaning minimizes the

pollutant loading in the tank interior cleaning wastewater stream);

— Potential to recover/reuse valuable product; and

— Reduced wastewater treatment system capital and annual costs due

to reduced wastewater pollutant loadings.
Section 8.0 - Development of Control and Treatment Options

8-3

The components of good heel removal and management practices are discussed in detail in

Section 7.1.2.

Based on responses to the Detailed Questionnaire, the majority of transportation

equipment cleaning (TEC) facilities currently operate good heel removal and management

practices. Because of the many benefits of these practices, and a demonstrated trend in the TECI

to implement these practices, EPA believes that the TECI will have universally implemented good

heel removal and management practices prior to implementation of TECI effluent guidelines. 

Therefore, EPA is allocating no costs or pollutant reductions for this component of the

technology option bases.

8.2 Best Practicable Control Technology Currently Available (BPT)

The BPT effluent limitations control identified conventional, priority, and

nonconventional pollutants when discharged from TEC facilities to surface waters of the U.S. 

Generally, EPA determines BPT effluent levels based upon the average of the best existing

performances by plants of various sizes, ages, and unit processes within each industrial category

or subcategory. In industrial categories where present practices are uniformly inadequate,

however, EPA may determine that BPT requires higher levels of control than any currently in

place if the technology to achieve those levels can be practicably applied. 

In addition, CWA Section 304(b)(1)(B) requires a cost assessment for BPT

limitations. In determining the BPT limits, EPA must consider the total cost of treatment

technologies in relation to the effluent reduction benefits achieved. This inquiry does not limit

EPA's broad discretion to adopt BPT limitations that are achievable with available technology

unless the required additional reductions are “wholly out of proportion to the costs of achieving

such marginal level of reduction.” See Legislative History, op. cit. p. 170. Moreover, the inquiry

does not require the Agency to quantify benefits in monetary terms. See e.g. American Iron and

Steel Institute v. EPA, 526 F. 2d 1027 (3rd Cir., 1975).
Section 8.0 - Development of Control and Treatment Options

8-4

In balancing costs against the benefits of effluent reduction, EPA considers the

volume and nature of expected discharges after application of BPT, the general environmental

effects of pollutants, and the cost and economic impacts of the required level of pollution control. 

In developing guidelines, the CWA does not require or permit consideration of water quality

problems attributable to particular point sources, or water quality improvements in particular

bodies of water. Therefore, EPA has not considered these factors in developing the final

limitations. See Weyerhaeuser Company v. Costle, 590 F. 2d 1011 (D.C. Cir. 1978).

EPA identified relatively few direct discharging facilities for most subcategories in

the TECI as compared to the number of indirect discharging facilities. However, the Agency

concluded that direct discharging facilities are similar to indirect discharging facilities in terms of

types of tanks cleaned, types of commodities cleaned, water use, and wastewater characteristics. 

With respect to existing end-of-pipe wastewater treatment in place, direct discharging facilities

typically operate biological treatment in addition to physical/chemical treatment technologies

typically operated by indirect discharging facilities. 

8.2.1 BPT Options for the Truck/Chemical & Petroleum Subcategory

BPT options for the Truck/Chemical & Petroleum Subcategory include the

following technology bases in addition to good heel removal as discussed in Section 8.1.

Option 1: Equalization, Oil/Water Separation, Chemical Oxidation, Neutralization,

Coagulation, Clarification, Biological Treatment, and Sludge Dewatering

Option 2: Equalization, Oil/Water Separation, Chemical Oxidation, Neutralization,

Coagulation, Clarification, Biological Treatment, Activated Carbon Adsorption,

and Sludge Dewatering

The purpose and design bases of the components of these technology options are described

below. These technologies are also described in further detail in Section 7.3.
Section 8.0 - Development of Control and Treatment Options

8-5

Equalization

Purpose: Reduce wastewater variability and accumulate wastewater to optimize subsequent

treatment system size and operating costs.

Design Basis: Minimum of 24-hour residence time. Includes aerators/mixers to homogenize

wastewater.

Oil/Water Separation

Purpose: Removal of entrained oil and grease.

Design Basis: Vertical tube coalescing separator with rotary oil skimmer. Includes demulsifier

chemical additive, oil storage tank, and sludge storage tank.

Chemical Oxidation, Neutralization, Coagulation, and Clarification

Purpose: Chemical Oxidation - chemically oxidize pollutants using oxidants such as

hydrogen peroxide.

Neutralization - adjust wastewater pH.

Coagulation - destabilize (reduce repulsive interaction) particle suspension using

electrolytes to aggregate suspended matter.

Clarification - settle and remove agglomerated coagulated solids.

Design Basis: Turn-key treatment system consisting of four reaction tanks in series plus a

clearwell. Includes chemical feed systems, mixers, control system, and sludge

storage tanks.

Biological Treatment

Purpose: Biologically decompose organic constituents.

Design Basis: Activated sludge biological treatment system with a 4.6-day residence time. 

Includes two preaeration tanks in series and a sludge storage tank.

Activated Carbon Adsorption

Purpose: Wastewater polishing.

Design Basis: Two carbon columns in series with nominal carbon change-out frequency of once

per month. Includes carbon charge of 250 lb/gpm/vessel.
Section 8.0 - Development of Control and Treatment Options

8-6

Sludge Dewatering

Purpose: Reduce sludge volume by removing water.

Design Basis: Plate-and-frame filter press. Generates dewatered sludge at 32.5% solids.

All existing direct discharging facilities in this subcategory currently employ

equalization, coagulation/clarification, biological treatment, and activated carbon adsorption. All

existing direct discharging facilities also operate simple oil/water separators, such as gravity

separators or oil skimmers, followed by chemical/physical treatment (e.g., coagulation/

clarification).

8.2.2 BPT Options for the Rail/Chemical & Petroleum Subcategory

BPT options for the Rail/Chemical & Petroleum Subcategory include the following

technology bases in addition to good heel removal as discussed in Section 8.1.

Option 1: Oil/Water Separation, Equalization, Biological Treatment, and Sludge Dewatering

Option 2: Oil/Water Separation, Equalization, Dissolved Air Flotation (with Flocculation and

pH Adjustment), Biological Treatment, and Sludge Dewatering

Option 3: Oil/Water Separation, Equalization, Dissolved Air Flotation (with Flocculation and

pH Adjustment), Biological Treatment, Organo-Clay/Activated Carbon

Adsorption, and Sludge Dewatering

The purpose and design bases of the components of these technology options are described

below. These technologies are also described in further detail in Section 7.3.

Oil/Water Separation

Purpose: Removal of entrained oil and grease.
Section 8.0 - Development of Control and Treatment Options

8-7

Design Basis: API separator with slotted pipe surface oil skimmer, fabric belt skimmer for

entrained thin oils, and bottom sludge rake. Includes oil storage tank and sludge

storage tank.

Equalization

Purpose: Reduce wastewater variability and accumulate wastewater to optimize subsequent

treatment system size and operating costs.

Design Basis: Two tanks in parallel, each with minimum 24-hour residence time. Includes

aerators to homogenize wastewater.

Dissolved Air Flotation

Purpose: Removal of entrained solid or liquid particles.

Design Basis: Dissolved air flotation unit with recycle pressurization system. Includes chemical

addition systems for polymers (coagulants and flocculant) and pH adjustment,

sludge collection tank, and pre-fabricated building.

Biological Treatment

Purpose: Biologically decompose organic constituents.

Design Basis: Activated sludge biological treatment system with a 4.6-day residence time. 

Includes two preaeration tanks in series and a sludge storage tank.

Organo-Clay/Activated Carbon Adsorption

Purpose: Wastewater polishing.

Design Basis: Two columns in series - organo-clay followed by carbon - with nominal carbon

change-out frequency of one vessel per month and nominal organo-clay changeout frequency of one vessel every two months. Includes organo-clay charge of

1.44 ft /gpm/vessel and carbon charge of 1.44 ft /gpm/vessel. 3 3

Sludge Dewatering

Purpose: Reduce sludge volume by removing water.

Design Basis: Plate-and-frame filter press. Generates dewatered sludge at 32.5% solids. 

Includes sludge storage tank.
Section 8.0 - Development of Control and Treatment Options

8-8

All existing direct discharging facilities in this subcategory currently employ

equalization, pH adjustment, biological treatment and sludge dewatering. All existing direct

discharging facilities also operate simple oil/water separators such as gravity separators or oil

skimmers.

8.2.3 BPT Options for the Barge/Chemical & Petroleum Subcategory

BPT options for the Barge/Chemical & Petroleum Subcategory include the

following technology bases in addition to good heel removal as discussed in Section 8.1.

Option 1: Oil/Water Separation, Dissolved Air Flotation, Filter Press, Biological Treatment,

and Sludge Dewatering

Option 2: Oil/Water Separation, Dissolved Air Flotation, Filter Press, Biological Treatment,

Reverse Osmosis, and Sludge Dewatering

The purpose and design bases of the components of these technology options are described

below. These technologies are also described in further detail in Section 7.3.

Oil/Water Separation

Purpose: Removal of low to moderate amounts of insoluble oil.

Design Basis: Gravity separator with 6.4-day residence time for wastewater equalization and oil,

water, and solids separation. Includes two separation tanks in series with an oil

removal pump and an oil storage tank.

Dissolved Air Flotation

Purpose: Removal of entrained solid or liquid particles.

Design Basis: Dissolved air flotation unit with influent pressurization system. Includes sludge

storage tank.

Filter Press

Purpose: Wastewater filtration.
Section 8.0 - Development of Control and Treatment Options

8-9

Design Basis: In-line plate-and-frame filter press for wastewater filtration. Generates dewatered

sludge at 32.0% solids. Includes diatomaceous earth mix tank and wastewater

effluent storage tank.

Biological Treatment

Purpose: Biologically decompose organic constituents.

Design Basis: Activated sludge biological treatment system with a 4.6-day residence time. 

Includes two preaeration tanks in series, a clarifier with polymer addition for

additional solids removal, and a sludge storage tank.

Reverse Osmosis

Purpose: Wastewater polishing.

Design Basis: Reverse osmosis system including unit with membranes, influent wastewater

storage tanks, and flooded suction tank.

Sludge Dewatering

Purpose: Reduce biological treatment sludge volume by removing water.

Design Basis: Sludge is dewatered in in-line wastewater plate-and-frame filter press described

above.

Note that following the proposed rule, EPA obtained additional treatment

performance data for conventional pollutants from two facilities that EPA determined also

operated BPT treatment. The technologies operated by these facilities include:

Facility 1: Gravity separation (1.25-day residence time), equalization and solids settling

(1.85-day residence time), sand filtration (2-hour residence time), biological

treatment with chemically assisted clarification (4-day residence time), and batch

flocculation (1.8-day residence time).

Facility 2: Gravity separation (61-day residence time), equalization (30-day residence time),

biological treatment with chemically assisted clarification (21-day residence time),

and sand filtration (less than 10-minute residence time).
Section 8.0 - Development of Control and Treatment Options

8-10

EPA considers the level of pollutant control demonstrated by these facilities to be

equivalent to Option 1.

8.2.4 BPT Options for the Food Subcategory

BPT options for the Food Subcategory include the following technology bases in

addition to good heel removal as discussed in Section 8.1.

Option 1: Oil/Water Separation

Option 2: Oil/Water Separation, Equalization, Biological Treatment, and Sludge Dewatering

The purpose and design bases of the components of these technology options are described

below. These technologies are also described in further detail in Section 7.3.

Oil/Water Separation

Purpose: Removal of low to moderate amounts of insoluble oil.

Design Basis: Gravity separator with 6.4-day residence time for wastewater equalization and oil,

water, and solids separation. Includes two separation tanks in series with an oil

removal pump and an oil storage tank.

Equalization

Purpose: Reduce wastewater variability and accumulate wastewater to optimize subsequent

treatment system size and operating costs.

Design Basis: Eight-day residence time. Includes aerators/mixers to homogenize wastewater.

Biological Treatment

Purpose: Biologically decompose organic constituents.

Design Basis: Activated sludge biological treatment system with a 4.6-day residence time. 

Includes two preaeration tanks in series and a sludge storage tank.
Section 8.0 - Development of Control and Treatment Options

8-11

Sludge Dewatering

Purpose: Reduce biological treatment sludge volume by removing water.

Design Basis: Plate-and-frame filter press for wastewater filtration. Generates dewatered sludge

at 32.0% solids. Includes diatomaceous earth mix tank.

Based on Screener Questionnaire results, EPA estimates that there are 19 direct

discharging facilities in the Food Subcategory. However, EPA’s survey of the TECI did not

identify any direct discharging facilities through the Detailed Questionnaire sample population.

The wastewater generated by the Food Subcategory contains high loadings of

biodegradable organics, and few toxic pollutants. EPA conducted sampling at a direct

discharging barge/food facility which EPA believes to be representative of the entire subcategory

population.

8.2.5 BPT Options for the Truck/Hopper, Rail/Hopper, and Barge/Hopper

Subcategories

BPT options for the Truck/Hopper, Rail/Hopper, and Barge/Hopper

Subcategories include the following technology bases in addition to good heel removal as

discussed in Section 8.1.

Option 1: Gravity Separation

The purpose and design bases of the components of this technology option are described below. 

This technology is also described in further detail in Section 7.3.

Gravity Separation

Purpose: Removal of suspended solids.
Section 8.0 - Development of Control and Treatment Options

8-12

Design Basis: Gravity separator with 4-day residence time for wastewater equalization and solids

separation. Includes two separation tanks in series.

8.3 Best Conventional Pollutant Control Technology (BCT)

BCT limitations control the discharge of conventional pollutants from direct

dischargers. Conventional pollutants include BOD, TSS, oil and grease, and pH. BCT is not an

additional limitation, but rather replaces BAT for the control of conventional pollutants. To

develop BCT limitations, EPA conducts a cost reasonableness evaluation, which consists of a

two-part cost test: 1) the POTW test, and 2) the industry cost-effectiveness test.

In the POTW test, EPA calculates the cost per pound of conventional pollutants

removed by industrial dischargers in upgrading from BPT to a BCT candidate technology and

then compares this to the cost per pound of conventional pollutants removed in upgrading

POTWs from secondary to tertiary treatment. The upgrade cost to industry, which is represented

in dollars per pound of conventional pollutants removed, must be less than the POTW benchmark

of $0.25 per pound (in 1976 dollars). In the industry cost-effectiveness test, the ratio of the

incremental BPT to BCT cost, divided by the BPT cost for the industry, must be less that 1.29

(i.e. the cost increase must be less than 29 percent).

In developing BCT limits, EPA considered whether there are technologies that

achieve greater removals of conventional pollutants than for BPT, and whether those technologies

are cost-reasonable according to the BCT Cost Test. In each subcategory, EPA considered the

same technologies and technology options when developing BCT options as were developed for

BPT. 

8.4 Best Available Technology Economically Achievable (BAT)

The factors considered in establishing a BAT level of control include: the age of

process equipment and facilities, the processes employed, process changes, the engineering
Section 8.0 - Development of Control and Treatment Options

8-13

aspects of applying various types of control techniques to the costs of applying the control

technology, non-water quality environmental impacts such as energy requirements, air pollution

and solid waste generation, and such other factors as the Administrator deems appropriate

(Section 304(b)(2)(B) of the Act). In general, the BAT technology level represents the best

existing economically achievable performance among facilities with shared characteristics. BAT

may include process changes or internal plant controls which are not common in the industry. 

BAT may also be transferred from a different subcategory or industrial category.

In each subcategory, EPA considered the same technologies and technology

options when developing BAT options as were developed for BPT. 

8.5 New Source Performance Standards (NSPS)

New Source Performance Standards under Section 306 of the CWA represent the

greatest degree of effluent reduction achievable through the application of the best available

demonstrated control technology for all pollutants (i.e., conventional, nonconventional, and toxic

pollutants). NSPS are applicable to new industrial direct discharging facilities. Congress

envisioned that new treatment systems could meet tighter controls than existing sources because

of the opportunity to incorporate the most efficient processes and treatment systems into plant

design. Therefore, Congress directed EPA, in establishing NSPS, to consider the best

demonstrated process changes, in-plant controls, operating methods, and end-of-pipe treatment

technologies that reduce pollution to the maximum extent feasible.

In each subcategory, EPA considered the same technologies and technology

options when developing NSPS options as were developed for BPT. 

8.6 Pretreatment Standards for Existing Sources (PSES)

Pretreatment standards are designed to prevent the discharge of toxic pollutants

that pass through, interfere with, or are otherwise incompatible with the operation of POTWs, as
Section 8.0 - Development of Control and Treatment Options

8-14

specified in Section 307(b) of the CWA. PSES are technology-based and analogous to BAT

limitations for direct dischargers.

8.6.1 PSES Options for the Truck/Chemical & Petroleum Subcategory

PSES options for the Truck/Chemical & Petroleum Subcategory include the

following technology bases in addition to good heel removal as discussed in Section 8.1.

Option A: Equalization and Oil/Water Separation

Option 1: Equalization, Oil/Water Separation, Chemical Oxidation, Neutralization,

Coagulation, Clarification, and Sludge Dewatering

Option 2: Equalization, Oil/Water Separation, Chemical Oxidation, Neutralization,

Coagulation, Clarification, Activated Carbon Adsorption, and Sludge Dewatering

The purpose and design bases of the components of these technology options are described

below. These technologies are also described in further detail in Section 7.3.

Equalization

Purpose: Reduce wastewater variability and accumulate wastewater to optimize subsequent

treatment system size and operating costs.

Design Basis: Minimum 24-hour residence time. Includes aerators/mixers to homogenize

wastewater.

Oil/Water Separation

Purpose: Removal of entrained oil and grease.

Design Basis: Vertical tube coalescing separator with rotary oil skimmer. Includes demulsifier

chemical additive, and oil storage tank.

Chemical Oxidation, Neutralization, Coagulation, and Clarification

Purpose: Chemical Oxidation - chemically oxidize pollutants using oxidants such as

hydrogen peroxide.
Section 8.0 - Development of Control and Treatment Options

8-15

Neutralization - adjust wastewater pH.

Coagulation - destabilize (reduce repulsive interaction) particle suspension using

electrolytes to aggregate suspended matter.

Clarification - settle and remove agglomerated coagulated solids.

Design Basis: Turn-key treatment system consisting of four reaction tanks in series plus a

clearwell. Includes chemical feed systems, mixers, control system, and sludge

storage tanks.

Carbon Adsorption

Purpose: Wastewater polishing.

Design Basis: Two carbon columns in series with nominal carbon change-out frequency of once

per month. Includes carbon charge of 250 lb/gpm/vessel.

Sludge Dewatering

Purpose: Reduce sludge volume by removing water.

Design Basis: Plate-and-frame filter press. Generates dewatered sludge at 32.5% solids.

8.6.2 PSES Options for the Rail/Chemical & Petroleum Subcategory

PSES options for the Rail/Chemical & Petroleum Subcategory include the

following technology bases in addition to good heel removal as discussed in Section 8.1.

Option 1: Oil/Water Separation

Option 2: Oil/Water Separation, Equalization, Dissolved Air Flotation (with Flocculation and

pH Adjustment), and Sludge Dewatering

Option 3: Oil/Water Separation, Equalization, Dissolved Air Flotation (with Flocculation and

pH Adjustment), Organo-Clay/Activated Carbon Adsorption, and Sludge

Dewatering
Section 8.0 - Development of Control and Treatment Options

8-16

The purpose and design bases of the components of these technology options are described

below. These technologies are also described in further detail in Section 7.3.

Oil/Water Separation

Purpose: Removal of entrained oil and grease.

Design Basis: API separator with slotted pipe surface oil skimmer, fabric belt skimmer for

entrained thin oils, and bottom sludge rake. Includes oil storage tank and sludge

storage tank.

Equalization

Purpose: Reduce wastewater variability and accumulate wastewater to optimize subsequent

treatment system size and operating costs.

Design Basis: Two tanks in parallel, each with minimum 24-hour residence time. Includes

aerators to homogenize wastewater.

Dissolved Air Flotation

Purpose: Removal of entrained solid or liquid particles.

Design Basis: Dissolved air flotation unit with recycle pressurization system. Includes chemical

addition systems for polymers (coagulants and flocculant) and pH adjustment,

sludge collection tank, and pre-fabricated building.

Organo-Clay/Activated Carbon Adsorption

Purpose: Wastewater polishing.

Design Basis: Two columns in series - organo-clay followed by carbon - with nominal carbon

change-out frequency of one vessel per month and nominal organo-clay changeout frequency of one vessel every two months. Includes organo-clay charge of

1.44 ft /gpm/vessel and carbon charge of 1.44 ft /gpm/vessel. 3 3

Sludge Dewatering

Purpose: Reduce sludge volume by removing water.

Design Basis: Plate-and-frame filter press. Generates dewatered sludge at 32.5% solids. 

Includes sludge storage tank.
Section 8.0 - Development of Control and Treatment Options

8-17

8.6.3 PSES Options for the Barge/Chemical & Petroleum Subcategory

PSES options for the Barge/Chemical & Petroleum Subcategory include the

following technology bases in addition to good heel removal as discussed in Section 8.1.

Option 1: Oil/Water Separation, Dissolved Air Flotation, and Filter Press

Option 2: Oil/Water Separation, Dissolved Air Flotation, Filter Press, Biological Treatment,

and Sludge Dewatering

Option 3: Oil/Water Separation, Dissolved Air Flotation, Filter Press, Biological Treatment,

Reverse Osmosis, and Sludge Dewatering

The purpose and design bases of the components of these technology options are described

below. These technologies are also described in further detail in Section 7.3.

Oil/Water Separation

Purpose: Removal of low to moderate amounts of insoluble oil.

Design Basis: Gravity separator with 6.4-day residence time for wastewater equalization and oil,

water, and solids preparation. Includes two separation tanks in series with an oil

removal pump and an oil storage tank.

Dissolved Air Flotation

Purpose: Removal of entrailed solid or liquid particles.

Design Basis: Dissolved air flotation unit with influent pressurization system. Includes sludge

storage tank.

Filter Press

Purpose: Wastewater filtration.

Design Basis: In-line plate-and-frame filter press for wastewater filtration. Generates dewatered

sludge at 32.0% solids. Includes diatomaceous earth mix tank and wastewater

effluent storage tank.
Section 8.0 - Development of Control and Treatment Options

8-18

Biological Treatment

Purpose: Biologically decompose organic constituents.

Design Basis: Activated sludge biological treatment system with a 4.6-day residence time. 

Includes two preaeration tanks in series, a clarifier with polymer addition for

additional solids removal, and a sludge storage tank.

Reverse Osmosis

Purpose: Wastewater polishing.

Design Basis: Reverse osmosis system including unit with membranes, influent wastewater

storage tanks, and flooded suction tank.

Sludge Dewatering

Purpose: Reduce biological treatment sludge volume by removing water.

Design Basis: Sludge is dewatered in in-line wastewater plate-and-frame filter press described

above.

8.6.4 PSES Options for the Food Subcategory

PSES options for the Food Subcategory include the following technology bases in

addition to good heel removal as discussed in Section 8.1.

Option 1: Oil/Water Separation

Option 2: Oil/Water Separation, Equalization, Biological Treatment, and Sludge Dewatering

The purpose and design bases of the components of these technology options are described

below. These technologies are also described in further detail in Section 7.3.

Oil/Water Separation

Purpose: Removal of low to moderate amounts of insoluble oil.
Section 8.0 - Development of Control and Treatment Options

8-19

Design Basis: Gravity separator with 6.4-day residence time for wastewater equalization and oil,

water, and solids separation. Includes two separation tanks in series with an oil

removal pump and an oil storage tank.

Equalization

Purpose: Reduce wastewater variability and accumulate wastewater to optimize subsequent

treatment system size and operating costs.

Design Basis: Eight-day residence time. Includes aerators/mixers to homogenize wastewater.

Biological Treatment

Purpose: Biologically decompose organic constituents.

Design Basis: Activated sludge biological treatment system with a 4.6-day residence time. 

Includes two preaeration tanks in series and a sludge storage tank.

Sludge Dewatering

Purpose: Reduce biological treatment sludge volume by removing water.

Design Basis: Plate-and-frame filter press for wastewater filtration. Generates dewatered sludge

at 32.0% solids. Includes diatomaceous earth mix tank.

8.6.5 PSES Options for the Truck/Hopper, Rail/Hopper, and Barge/Hopper

Subcategories

PSES options for the Truck/Hopper, Rail/Hopper, and Barge/Hopper

Subcategories include the following technology bases in addition to good heel removal as

discussed in Section 8.1.

Option 1: Gravity Separation

The purpose and design bases of the components of this technology option are described below. 

This technology is also described in further detail in Section 7.3.
Section 8.0 - Development of Control and Treatment Options

8-20

Gravity Separation

Purpose: Removal of suspended solids.

Design Basis: Gravity separator with 4-day residence time for wastewater equalization and solids

separation. Includes two separation tanks in series.

8.6.6 Pollution Prevention Alternative

EPA also considered an enforceable pollution prevention alternative, referred to as

the Pollutants Management Plan. The ten components of this plan include: 

(i) procedures for identifying cargos, the cleaning of which is likely to result in

discharges of pollutants that would be incompatible with treatment at the

POTW;

(ii) for cargos identified as being incompatible with treament at the POTW, the

plan shall provide that heels be fully drained, segregated from other

wastewaters, and handled in an appropriate manner;

(iii) for cargos identified as being incompatible with treatment at the POTW,

the Plan shall provide that the tank be prerinsed or presteamed as

appropriate and the wastewater segregated from wastewaters to be

discharged to the POTW and handled in an appropriate manner, where

necessary to ensure that they do not cause or contribute to a discharge that

would be incompatible with treatment at the POTW;

(iv) all spent cleaning solutions, including interior caustic washes, interior

presolve washes, interior detergent washes, interior acid washes, and

exterior acid brightener washes shall be segregated from other wastewaters

and handled in an appropriate manner, where necessary to ensure that they

do not cause or contribute to a discharge that would be incompatible with

treatment at the POTW;

(v) provisions for appropriate recycling or reuse of cleaning agents;

(vi) provisions for minimizing the use of toxic cleaning agents (solvents,

detergents, or other cleaning or brightening solutions);

(vii) provisions for appropriate recycling or reuse of segregated wastewaters

(including heels and prerinse/pre-steam wastes);
Section 8.0 - Development of Control and Treatment Options

8-21

(viii) provisions for off-site treatment or disposal, or effective pre-treatment of

segregated wastewaters (including heels, prerinse/pre-steam wastes, spent

cleaning solutions);

(ix) information on the volumes, content, and chemical characteristics of

cleaning agents used in cleaning or brightening operations; and

(x) provisions for maintaining appropriate records of heel management

procedures, prerinse/pre-steam management procedures, cleaning agent

management procedures, operator training, and proper operation and

maintenance of any pre-treatment system.

8.7 Pretreatment Standards for New Sources (PSNS)

Section 307 of the CWA requires EPA to promulgate both pretreatment standards

for new sources and new source performance standards. New indirect discharging facilities, like

new direct discharging facilities, have the opportunity to incorporate the best available

demonstrated technologies including: process changes, in-facility controls, and end-of-pipe

treatment technologies.

In each subcategory, EPA considered the same technologies and technology

options when developing PSNS options as were developed for PSES. 
Section 9.0 - Costs of Technology Bases for Regulations

9-1

9.0 COSTS OF TECHNOLOGY BASES FOR REGULATIONS

This section describes the methodology used to estimate the implementation costs

associated with each of the regulatory options under consideration for the Transportation

Equipment Cleaning Industry (TECI). Section 8.0 describes in detail the regulatory options and

the technologies used as the bases for those options. The cost estimates presented in this section,

together with the pollutant reduction estimates described in Section 10.0, provide a basis for

evaluating the regulatory options and determining the economic impact of the final regulation on

the TECI. The results of the economic impact assessment for the regulation are found in the

Economic Assessment (EA) for the TECI final rulemaking (1).

EPA used the following approach to estimate compliance costs for the TECI:

C EPA mailed Detailed Questionnaires to a statistical sample of

transportation equipment cleaning (TEC) facilities (discussed in Section

3.2.3). Information from the 81 facilities that responded to the

questionnaire was used to characterize industry-wide TEC operations,

operating status, and pollutant control technologies in place for the baseline

year (1994). EPA also used information from Screener Questionnaire

responses (discussed in Section 3.2.2) and other sources for four direct

discharging facilities to characterize the baseline for direct dischargers in

two industry subcategories (see Section 9.1.2).

C EPA collected and analyzed field sampling data to determine the pollutant

concentrations in untreated TEC-process wastewater (discussed in

Section 6.0).

C EPA identified candidate pollution prevention and wastewater treatment

technologies and grouped appropriate technologies into regulatory options

(discussed in Section 8.0). The regulatory options serve as the bases of

compliance cost and pollutant loading calculations.

C EPA performed sampling episodes at best performing facilities to determine

pollutant removal performance for the identified technologies (see Section

10.0).

C EPA developed cost equations for capital and operating and maintenance

(O&M) costs for water conservation practices (discussed in Section 9.2.7)
Section 9.0 - Costs of Technology Bases for Regulations

9-2

and each technology included in the regulatory options (discussed in

Section 9.2.4) based on information gathered from TEC facilities,

wastewater treatment system vendors, technical literature, and on

engineering judgement. 

C EPA developed and used an electronic cost model to estimate compliance

costs (discussed in Section 9.3) and pollutant loadings (discussed in

Section 10.0) for each regulatory option.

C EPA used output from the cost model to estimate total annualized costs,

cost-effectiveness values, and the economic impact of each regulatory

option on the TECI (presented in the EA). 

EPA estimated facility compliance costs for 19 unique technology options. 

Table 9-1 at the end of this section lists the number of technology options for which EPA

estimated facility compliance costs.

The following information is discussed in this section: 

C Section 9.1: Development of model sites;

C Section 9.2: Methodology used to estimate compliance costs;

C Section 9.3: Design and cost elements for pollutant control technologies;

C Section 9.4: Summary of estimated compliance costs by regulatory

option; and

C Section 9.5: References.

EPA also evaluated a pollution prevention alternative as discussed in Section 8.6.6. Because EPA

is considering the pollution prevention plan as an alternative to meeting the numeric standards,

EPA believes that the costs of this plan will be less than the costs of any of EPA’s selected

options because a facility will choose to adopt the most cost effective option available to it.
Section 9.0 - Costs of Technology Bases for Regulations

9-3

9.1 Development of Cost Model Inputs

This section describes the development of the key inputs to the TECI cost model:

model sites and pollutant control technologies.

9.1.1 Model Site Development

The Agency used a model site approach to estimate regulatory compliance costs

for the TECI. A model site is an operating TEC facility whose data were used as input to the

TECI cost model. A total of 81 facilities were used as model sites for the cost analysis because

each meets the following criteria: 

C The facility discharges 100,000 gallons or more per year of TEC process

wastewater either directly to surface waters or indirectly to a publiclyowned treatment works (POTW); and

C The facility supplied sufficient economic and technical data to estimate

compliance costs and assess the economic impacts of these costs. Such

data include daily flow rate, operating schedules, tank cleaning production

and types of tanks cleaned, existing treatment in place, and economic status

for the base year 1994.

As discussed in Section 3.2.3, EPA mailed Detailed Questionnaires to a statistical

sample of TEC facilities. EPA evaluated each of the 176 respondents to determine whether the

facility would be potentially affected by the regulatory options considered by the Agency and

would therefore incur costs as a result of potential regulations. Ninety-five facilities would not

incur costs because:

C The facility is subject to other Clean Water Act final or proposed

categorical standards and, therefore, meets EPA’s exclusion for industrial

and commercial facilities (34 facilities); 

C The facility discharges less than 100,000 gallons per year of TEC process

wastewater (12 facilities); or
Section 9.0 - Costs of Technology Bases for Regulations

9-4

C The facility is a zero or alternative discharging facility (i.e., does not

discharge TEC wastewater either directly or indirectly to a surface water)

and thus would not be subject to the limitations and standards for this

guideline (49 facilities).

Each of the 81 facilities is considered a “model” facility since it represents a larger

number of facilities in the overall industry population as determined by its statistical survey

weight. The Statistical Support Document (2) discusses in detail the development of the survey

weights. These facilities represent an estimated industry population of 692 facilities that discharge

either directly to surface waters or indirectly to a POTW. EPA selected a facility-by-facility

model approach to estimate compliance costs, as opposed to a more general modeling approach,

to better characterize the variability of processes and resultant wastewaters among TEC facilities. 

Although EPA estimated regulatory compliance costs on a facility-by-facility basis,

EPA made certain engineering assumptions based on information from standard engineering

costing publications, equipment vendors, and industry-wide data. Thus, for any given model

facility (or facilities represented by the model facility), the estimated costs may deviate from those

that the facility would actually incur. However, EPA considers the compliance costs to be

accurate when evaluated on an industry-wide, aggregate basis. 

9.1.2 Supplemental Model Site Development

EPA reviewed the 81 model facilities and identified direct dischargers in two

subcategories (Barge/Chemical & Petroleum and Barge/Hopper), but none in the remaining

subcategories. To assess the need to develop limitations and standards for direct dischargers for

the remaining subcategories, EPA reviewed the Screener Questionnaire sample population to

identify direct discharging facilities that would be subject to these regulations. This review

identified the following direct dischargers by subcategory:

C Truck/Chemical & Petroleum (three facilities in sample population);

C Rail/Chemical & Petroleum (one facility in sample population); and
Section 9.0 - Costs of Technology Bases for Regulations

9-5

C Food (three facilities in sample population).

EPA decided to estimate compliance costs for direct dischargers in the

Truck/Chemical & Petroleum and Rail/Chemical & Petroleum Subcategories for the following

reasons:

C Regulatory options considered for direct and indirect dischargers differ

(i.e., regulatory options for direct dischargers include biological treatment

while those for indirect dischargers do not); and

C Dissimilar regulatory options may result in significantly different estimated

compliance costs.

Technical information required to estimate compliance costs for these facilities was

obtained from the Screener Questionnaire responses, telephone conversations with facility

personnel, and facility NPDES permits.

Note that the estimated compliance costs for these direct dischargers are not added

to the costs estimated for the 81 model sites (described in Section 9.1) to obtain industry-wide

cost estimates. Statistically, compliance costs for these direct dischargers are included within the

industry-wide cost estimates based on the 81 model facilities. Therefore, EPA used estimated

compliance costs for these direct dischargers only to assess in greater detail the impact of the

limitations on these facilities. 

EPA estimates that the compliance costs for direct dischargers in the Food

Subcategory will be zero or insignificant for the following reasons:

C All of these facilities identified by EPA currently operate biological

treatment and are believed to currently achieve the final limitations; and

C EPA assumes that current NPDES permits for these facilities require

frequent monitoring for pollutant parameters regulated by this guideline
Section 9.0 - Costs of Technology Bases for Regulations

9-6

(i.e., BOD , TSS, and oil and grease). Therefore, these facilities will not 5

incur additional monitoring costs as a result of this rulemaking.

Based on this assessment, EPA believes that developing model sites in the TECI

cost model for direct discharging food grade facilities is not necessary. 

9.1.3 Pollutant Control Technology Development

EPA evaluated Screener and Detailed Questionnaire responses to identify

applicable pollution prevention and wastewater treatment technologies for the TECI and to select

facilities for EPA’s TECI site visit and sampling program. EPA conducted 44 engineering site

visits at 43 facilities to collect information about TEC processes, water use practices, pollution

prevention practices, wastewater treatment technologies, and waste disposal methods. Based on

the information gathered from these site visits, EPA sampled untreated and/or treated wastewater

streams at 18 facilities. EPA also collected treatment performance data from two additional

Barge/Chemical & Petroleum facilities operating BAT/BPT treatment (see Section 3.5). Sections

3.3 and 3.4 discuss in more detail the engineering site visit and sampling program conducted as

part of the TECI rulemaking.

In most cases, the specific pollutant control technologies costed, including

equipment, chemical additives and dosage rates, and other O&M components, are the same as

those operated by the facilities whose sampling data are used to represent the performance

options, with adjustments made to reflect differences in wastewater flow rates or other facilityspecific conditions. For example, BPT and PSES Options 1 and 2 for the Truck/Chemical &

Petroleum Subcategory include chemical oxidation, neutralization, coagulation, and clarification

and are specifically based on a turn-key system characterized during wastewater sampling. 

Therefore, EPA’s estimated compliance costs are based upon implementation of a turn-key

chemical oxidation, neutralization, coagulation, clarification system. EPA chose this approach to

ensure that the technology bases of the regulatory options can achieve the limitations and

standards, and that the estimated compliance costs reflect implementation of these technology

bases. EPA believes this approach overestimates the compliance costs because many facilities can
Section 9.0 - Costs of Technology Bases for Regulations

9-7

likely achieve the limitations and standards by implementing less expensive pollution prevention

practices, substituting less expensive alternative equipment, or utilizing equipment in place that

EPA did not assess as equivalent to the technology basis (see Section 9.2.5 for more detail on

treatment-in-place credits).

EPA emphasizes that the regulations do not require that a facility install or possess

these technologies, but only that the facility comply with the appropriate effluent limitations and

standards. 

9.1.4 Model Sites with Production in Multiple Subcategories

Some model facilities have production in more than one subcategory. For

example, a facility that cleans both tank trucks and rail tank cars that last transported chemical

cargos has production in both the Truck/Chemical & Petroleum and Rail/Chemical & Petroleum

Subcategories. To simplify compliance costs and pollutant reduction estimates, EPA assigned

each multiple-subcategory facility a primary subcategory. For these facilities, compliance costs

and pollutant reduction estimates for all facility production are assigned to the primary

subcategory. This methodology may bias the subcategory cost and pollutant reduction estimates

on a facility-by-facility basis; however, EPA believes that subcategory costs and pollutant

reduction estimates are accurate on an aggregate basis (i.e., individual facility biases are offset

within each subcategory in aggregate).

This simplification is necessary because the technology bases of the regulatory

options differ for each subcategory. EPA considered an alternative approach that included

designing separate treatment systems for subcategory-specific wastewater based on the

subcategory regulatory options. However, to comply with the regulations, a facility can

implement any technology it chooses, provided it achieves the effluent limitations. Installation of

two (or more) separate treatment systems is not a practical or cost-effective solution to comply

with the regulations. Therefore, EPA rejected this alternative approach. 
Section 9.0 - Costs of Technology Bases for Regulations

9-8

Compliance costs and pollutant reduction estimates for individual facilities that

clean multiple tank types are based on the assumption that facilities will install and operate the

technologies chosen as the technology basis for each facility’s primary subcategory. EPA does

not have data available demonstrating that the technologies costed to treat each primary

subcategory will effectively treat wastewaters from all potential secondary subcategories. For

example, EPA does not have data available on the performance of the Truck/Chemical &

Petroleum Subcategory technology bases in treating Rail/Chemical & Petroleum Subcategory

wastewater. However, EPA believes that the costed technology for the Truck/Chemical &

Petroleum Subcategory option will control all pollutants of interest in all TEC wastewaters

generated by each facility because the control technologies included in the different technology

bases use similar pollutant removal mechanisms (e.g., chemical/physical treatment, secondary

biological treatment, and advanced treatment for wastewater polishing). 

For these reasons, EPA believes that its costing methodology for multiplesubcategory facilities is appropriate and adequately represents the compliance costs and pollutant

reductions for these facilities. 

9.2 Costing Methodology

To accurately determine the impact of the effluent limitations guidelines and

standards on the TECI, EPA estimated costs associated with regulatory compliance. The Agency

developed a cost model to estimate compliance costs for each of the regulatory options under

BPT, BCT, BAT, PSES, PSNS, and NSPS. EPA, used the cost model to estimate costs

associated with implementation of the pollutant control technologies used as the basis for each

option. However, EPA did not use the cost model to estimate compliance costs for the

Barge/Chemical & Petroleum Subcategory, rather EPA used a site-specific approach to assign

compliance costs (see Section 9.2.9). Again, the regulations do not require that a facility install

and possess these technologies but only that the appropriate facility effluent limitations and

standards be achieved.
Section 9.0 - Costs of Technology Bases for Regulations

9-9

In addition, EPA included water conservation in its costing methodology. 

Although water conservation technologies are not included in EPA’s technology options, EPA

retained these technologies as a cost-effective compliance strategy for several subcategories (see

Section 9.2.7).

9.2.1 Wastewater Streams Costed

Based on information provided by the sites in their Detailed Questionnaire (or

Screener Questionnaire in the case of the four direct dischargers without a Detailed

Questionnaire), follow-up letters, and telephone calls, EPA classified each wastewater stream at

each site as TEC interior cleaning wastewater, other TEC commingled wastewater stream, or

non-TEC wastewater. The following additional questionnaire data were used to characterize

wastewater streams:

C Flow rate;

C Production rate (i.e., types and number of tanks cleaned); and

C Operating schedule.

EPA first reviewed wastewater streams discharged by each facility and classified

these streams as interior cleaning wastewater or other commingled wastewater stream. Facilities

that clean tanks representing multiple modes of transportation (e.g., road, rail, or waterway) or

that clean both tanks and closed-top hoppers are considered to have multiple wastewater streams. 

However, as discussed in Section 9.1.4, these facilities are assigned a primary subcategory, and

the TECI cost model costs the flow contribution of wastewater from any secondary subcategory

as primary subcategory wastewater.

Wastewater considered in developing compliance costs consists of tank interior

cleaning wastewater and other commingled wastewater streams not easily segregated. Examples

of interior cleaning wastewater are water, condensed steam, prerinse cleaning solutions, chemical

cleaning solutions, and final rinse solutions generated from cleaning tank and container interiors. 

Examples of other commingled waste streams not easily segregated are tank or trailer exterior
Section 9.0 - Costs of Technology Bases for Regulations

9-10

cleaning wastewater, equipment and floor washings, TEC-contaminated stormwater, boiler

blowdown, bilge and ballast waters, and other non-TEC wastewater streams that are commingled

with TEC wastewaters. Incidental and non-TEC wastewater streams are included in developing

the compliance costs because these streams are difficult or costly to segregate and treat separately

from TEC wastewater.

Wastewater streams not considered in developing compliance costs include

sanitary wastewater; tank hydrotesting wastewater; and repair, rebuilding, and maintenance

wastewater. These wastewater streams are not costed for treatment because they do not fall

within the scope of the TECI rulemaking (e.g., they fall under the scope of another rulemaking)

and they are generally easily segregated from TEC wastewaters.

9.2.2 Influent Pollutant Concentrations

The concentration of each pollutant in each model site TEC wastewater stream

was estimated using field sampling pollutant loadings data for wastewater discharged by tank

type. Section 3.4 discusses the field sampling program. These data are used with Detailed or

Screener Questionnaire flow, tank cleaning production, and operating data to calculate the

influent concentrations. Section 10.0 describes these calculations in more detail.

9.2.3 Cost Model Development

EPA developed a computerized design and cost model to estimate compliance

costs and pollutant reductions for the TECI technology options for the following subcategories:

C Truck/Chemical & Petroleum;

C Rail/Chemical & Petroleum;

C Barge/Chemical & Petroleum (indirect dischargers only);

C Food;

C Truck/Hopper; 

C Rail/Hopper; and

C Barge/Hopper.
Section 9.0 - Costs of Technology Bases for Regulations

9-11

(The costing methodology developed for direct dischargers in the Barge/Chemical & Petroleum

Subcategory is discussed in Section 9.2.9.)

EPA evaluated the following existing cost models from other EPA effluent

guidelines development efforts to be used as the basis for the TECI cost model:

C Metal Products and Machinery (MP&M) Phase I Industries Design and

Cost Model; and 

C Pharmaceuticals Industry Cost Model.

EPA incorporated modified components of both models in the TECI cost model.

The TECI cost model contains technology “modules,” or subroutines; each module

calculates direct capital and annual costs for installing and operating a particular wastewater

treatment or pollution reduction technology. In general, each module is exclusive to one control

technology. For each regulatory option, the TECI cost model combines a series of technology

modules. There are also module-specific “drivers” (technology drivers) that operate in

conjunction with the technology modules. These drivers access input data, run the corresponding

modules, and populate output databases. The technology drivers are bound together by primary

drivers, which run the technology drivers in the appropriate order for each regulatory option. 

EPA adapted the MP&M cost model drivers for the TECI cost model with the

following modifications:

C Costs are tracked by subcategory. The MP&M cost model was not

designed to develop separate costs and loads by subcategory.

C All data values calculated by the cost model are stored in an output

database file. This allows the cost model user to examine the importance

of each calculated value for each technology module.
Section 9.0 - Costs of Technology Bases for Regulations

9-12

The input data to the cost model include production data (i.e., types and number of

tanks cleaned), wastewater flow, existing technology in place, operational hours per day, and

operational days per year. EPA obtained the flow rates, operating schedules, production data,

and existing treatment-in-place data from Detailed Questionnaire responses from each facility (and

other data sources for supplemental facilities, as discussed in Section 9.1.2). These data comprise

the input data for the technology modules. Each module manipulates the input data (stored in

data storage files) to generate output data (stored in different data storage files), which represent

costs incurred by implementing the costed technology. The output data storage files become the

input data storage files for subsequent technology modules, enabling the cost model to track

operating hours per day and days per year, flows, and costs for use in subsequent modules.

9.2.4 Components of Compliance Costs

EPA used the TECI cost model to calculate capital costs and annual O&M costs

for each technology and to sum the capital and O&M costs for all technologies at each facility. 

Capital costs comprise direct and indirect costs associated with the purchase, delivery, and

installation of pollutant control technologies. Annual O&M costs comprise all costs related to

operating and maintaining the treatment system for a period of one year, including the estimated

costs for compliance monitoring of wastewater discharges. These compliance costs components

are described in detail in the following subsections.

9.2.4.1 Capital Costs

The TECI cost model uses the cost equations listed in Table 9-2 to estimate the

direct capital costs for purchasing, delivering, and installing equipment included in the technology

bases for each regulatory option. Where possible, cost sources (i.e., vendors) provide all three

cost components for varying sized equipment. Where a vendor quote is not available, literary

references or estimates based on engineering judgement are used to estimate direct capital cost. 

Direct capital costs consist of the following:
Section 9.0 - Costs of Technology Bases for Regulations

9-13

C Purchase of treatment equipment and any accessories;

C Purchase of treatment equipment instrumentation (e.g., pH probes and

control systems);

C Installation costs (e.g., labor and rental fees for equipment such as cranes);

C Delivery cost based on transporting the treatment system an average of 500

miles;

C Construction of buildings or other structures to house major treatment

units (e.g., foundation slab, enclosure, containment, and lighting and

electricity hook-ups); and

C Purchase of necessary pumps (e.g., for wastewater transfer, chemical

addition, and sludge handling).

Indirect capital costs are not technology-specific and are instead represented as a

factor that is applied to the direct capital costs in the post-processing portions of the TECI cost

model. Indirect capital costs typically include the following:

C Purchase and installation of necessary piping to interconnect treatment

system units (e.g., pipe, pipe hangers, fittings, valves, insulation, similar

equipment);

C Secondary containment and land costs;

C Excavation and site work (e.g., site clearing, landscaping, fences,

walkways, roads, parking areas);

C Engineering costs (e.g., administrative, process design and general

engineering, communications, consultant fees, legal fees, travel,

supervision, and inspection of installed equipment);

C Construction expenses (e.g., construction tools and equipment,

construction supervision, permits, taxes, insurance, interest);

C Contractors’ fees; and

C Contingency (e.g., allocation for unpredictable events such as foul weather,

price changes, small design changes, and errors in estimates).
DAFGPM ' INFGPM ×

65

50

' INFGPM × 1.3

Section 9.0 - Costs of Technology Bases for Regulations

9-14

Total capital investment (direct and indirect capital costs) is obtained by

multiplying the direct capital cost by various indirect capital cost factors, summing them, and then

adding start-up costs as shown in Table 9-3.

Capital cost equations relate direct capital cost to equipment design parameters,

such as wastewater flow. Equipment component designs are generally based upon the equipment

operated by the facilities whose sampling data are used as the basis for the technology options. 

To relate the design of the equipment operated by the sampled facility to that required by the

costed facilities, the TECI cost model typically uses a “design equation.” For example, a sampled

facility with a nominal wastewater flow rate of 50 gpm operates a 65-gpm dissolved air flotation

(DAF) unit. The design equation developed for the DAF unit is:

(1)

where:

DAFGPM = DAF unit nominal capacity (gpm)

INFGPM = Influent flow rate (gpm)

In this example, the equipment design parameter for the DAF unit is the facility’s wastewater flow

rate, and the equipment costing parameter is the DAF unit’s nominal capacity.

Cost equations are used throughout the TECI cost model to determine direct

capital costs. For a given equipment component, a cost curve is developed by plotting different

equipment sizes versus direct capital costs. Equipment sizes used to develop the cost equations

correspond to the range of sizes required by the costed facilities based on an influent flow rate or

volume requirement. The cost/size data point pairs are plotted and an equation for the curve that

provides the best curve fit for the plotted points with the least standard error is calculated. The

equations calculated to fit the cost curves are most commonly polynomial, but may be linear,

exponential, or logarithmic.
Section 9.0 - Costs of Technology Bases for Regulations

9-15

Because of the variability in wastewater flow rates at TEC facilities, equipment

design equations estimate that some facilities would require very small pieces of equipment. In

some instances, EPA determined that very small equipment is either not commercially available or

not technically feasible. In these cases, the facility is costed for the smallest equipment size that is

both commercially available and technically feasible. For wastewater streams requiring equipment

with a capacity above the maximum-sized unit commercially available and technically feasible,

multiple units of equal capacity are designed to operate in parallel. 

9.2.4.2 Annual Costs

Annual cost components include costs for operational labor, maintenance and

repair labor, operating and maintenance materials, electricity, treatment chemicals, filter

replacements, disposal of treatment system residuals, and monitoring.

Annual costs typically are not estimated using cost curves. Operational,

maintenance, and repair labor are estimated as a labor time requirement per equipment component

or a fraction of the total operational hours per day and operational days per year for the costed

facility. Labor time is converted to a constant labor cost used throughout the TECI cost model. 

The TECI cost model uses the wage rate specified in The Richardson Rapid System Process Plant

Construction Estimating Standards (3) for installation workers in 1994 ($25.90 per hour) for all

required labor to install, operate, and maintain the systems associated with the technology bases. 

Electricity costs are based on operating time and required horsepower, which are converted to

electricity costs using a standard rate used throughout the TECI cost model. The TECI cost

model uses the average cost for electricity of $0.047 per KW-hr from the MP&M cost model (4). 

Chemical addition feed rates, filter replacements, and wastewater treatment residual generation

rates are generally based on wastewater flow rate. These rates are converted to costs using unit

cost data (e.g., $/weight) provided by chemical vendors and waste disposal facilities. The TECI

cost model uses water rates from the 1992 Rate Survey of Water and Wastewater conducted by

Ernst and Young (5). The water rate is adjusted from the 1992 rate of $2.90 per 1,000 gallons to
AC ' OC 368.1

OCI

Section 9.0 - Costs of Technology Bases for Regulations

9-16

the 1994 rate of $2.98 per 1,000 gallons using the capital investment index discussed later in this

section. 

Table 9-4 presents the O&M unit costs used by the cost model and includes

references for the origin of each cost.

EPA adjusted water fees and monitoring costs calculated by the cost model to

1994 dollars because all facility-specific information in the questionnaire database is from 1994. 

This adjustment allows direct comparison between financial data reported in the Detailed

Questionnaire and calculated compliance costs for each facility. Costs are adjusted based on the

Chemical Engineering (CE) Plant Cost 1994 annual index and the index value for the year in

which costs were originally reported using the following formula (6):

(2)

where:

AC = Adjusted cost, 1994 dollars

OC = Original cost, dollars

OCI = Original cost year index

9.2.5 Treatment-in-Place Credit

EPA evaluated facility responses to the Detailed Questionnaire to determine

whether pollutant control technologies are currently in place. These facilities are given credit for

having “treatment in place” to ensure that EPA accurately assesses the baseline (1994) costs and

pollutant loadings. Where appropriate, these treatment credits are used to develop cost estimates

for system upgrades instead of costing for new systems. No costs beyond necessary additional

compliance monitoring are estimated for facilities currently using pollutant control technologies

with sufficient capacity equivalent to a regulatory option. 
Section 9.0 - Costs of Technology Bases for Regulations

9-17

EPA reviewed questionnaire data for each model facility to assess the types of endof-pipe technologies in place at each site (e.g., oil/water separation, biological oxidation). EPA

identified end-of-pipe technologies on site that, based on technical consideration, are considered

equivalent to technologies included in the TECI technology options. For example, belt filter

presses are considered equivalent to plate-and-frame filter presses for sludge dewatering. EPA

also identified technologies that are not considered equivalent, and for which no credit for

treatment in place is given. For example, bag filters are not considered equivalent to activated

carbon adsorption. Site-specific determinations regarding treatment in place at model sites are

included in the administrative record for this rulemaking. 

In some cases, EPA evaluated facility treatment-in-place to determine whether

existing technologies, although not identical to EPA’s technology bases, may be sufficient to meet

EPA’s effluent limitations. For example, Option 1 for the Truck/Chemical & Petroleum

Subcategory includes oil/water separation (coalescing-type) and chemical/physical treatment

(coagulation/clarification). Several model facilities currently operate simple oil/water separators

such as gravity separators or oil skimmers, followed by chemical/physical treatment (coagulation

or dissolved air flotation). EPA believes both treatment approaches can achieve equivalent

performance; therefore, the Agency assessed treatment-in-place credit for these facilities. This

belief is based on two assumptions. First, EPA assumes that facilities are operating oil/water

separation technologies that are appropriate for the specific amount and type of oils and greases

generated by their facility. Second, EPA assumes that subsequent chemical/physical treatment

will be adequate to handle any minor aberrations in anticipated oil and grease characteristics. 

EPA used this same approach for assigning oil/water separation (API) treatment-in-place credit

for the Rail/Chemical & Petroleum Subcategory. 

EPA used operating schedule data and site-specific technology specifications from

the Detailed Questionnaire responses to assess the capacity of the end-of-pipe technologies in

place at the model sites. EPA assumed that each model site operates the technologies in place at

full capacity at baseline (i.e., currently). Therefore, EPA used the operating schedule and capacity

of each technology as reported in the questionnaire to define its maximum operating capacity. 
Section 9.0 - Costs of Technology Bases for Regulations

9-18

EPA uses the maximum operating capacity to assign facilities full or partial treatment-in-place

credit. Partial treatment-in-place credit is assigned to facilities determined to not have enough

treatment capacity in place.

Facilities receiving full treatment-in-place credit for a given technology are not

expected to incur additional capital or O&M costs. However, the facility may incur additional

costs for items not directly associated with the unit, such as monitoring costs. Facilities receiving

partial treatment-in-place credit incur additional capital and O&M costs under the regulatory

options for an additional unit to treat the wastewater flow that is above the existing unit’s

capacity. 

EPA also analyzed technologies that are not considered equivalent, and for which

no credit for treatment in place is given, to see if these facilities currently generate significant

volumes of settled sludge that are disposed off site. Although operation of these units is not

considered equivalent treatment, the sludge currently generated by these units is considered

similar to the sludge that would be generated by the technology bases if the non-equivalent

technology were not operated. If these treatment units continue to be operated after

implementation of the technology bases, they will significantly reduce the amount of sludge that

would be generated by the technology bases. Therefore, EPA credited baseline sludge generation

and disposal from non-equivalent equipment.

9.2.6 Calculation of Baseline Parameters

As discussed in the previous section, EPA determined the treatment in place for

the costed facilities. Before running the cost model for any of the technology options, a baseline

run of the model is performed to determine the following:

C Baseline (1994) annual costs incurred by each model site;

C Baseline non-water quality impacts, such as electricity usage, sludge and

solid waste generation, and waste oil generation; and
PNPL '

C × PNF

264,170

Section 9.0 - Costs of Technology Bases for Regulations

9-19

C Baseline pollutant loadings.

The baseline values for annual costs, non-water quality impacts, and pollutant loadings are

subtracted from the costs calculated for each technology option to estimate the incremental costs

of compliance with each regulatory option. EPA uses the incremental costs, non-water quality

impacts, and pollutant loadings to represent economic and environmental impacts of the

rulemaking.

9.2.7 Good Water Conservation Practices and Flow Reduction

As discussed in Section 7.2, the reduction in the volume of wastewater discharged

from TEC facilities offers several benefits, including the following:

C Reduced water usage and sewage fees;

C Improved wastewater treatment efficiency because influent wastewater

pollutant concentrations will be higher; and

C Reduced wastewater treatment system capital and annual operating and

maintenance (O&M) costs due to reduced wastewater flows.

End-of-pipe wastewater treatment cannot achieve complete removal of pollutants. 

There is a lowest concentration that wastewater treatment technologies have been demonstrated

to achieve. As shown in the equation below, pollutant loadings in wastewater are dependent upon

wastewater pollutant concentration and on wastewater flow.

(3)

where:

PNPL = Production normalized pollutant load, g/tank

C = Concentration, μg/L

PNF = Production normalized flow, gallons/tank
Section 9.0 - Costs of Technology Bases for Regulations

9-20

Equation (3) demonstrates that optimal pollutant reductions are achieved using a combination of

good water conservation practices and end-of-pipe wastewater treatment.

In developing effluent guidelines limitations and standards for the TECI, EPA

included good water conservation practices as a cost-effective compliance strategy for most

subcategories. Although EPA did not include flow reduction in the technology bases for all

subcategories, EPA retained flow reduction in the cost model for most subcategories. Flow

reduction results in significant compliance cost savings and consequently EPA assumed facilities

will incorporate flow reduction in their compliance strategy. 

The Agency considered good water conservation practices to be represented by

the median tank interior cleaning wastewater volume discharged per tank cleaning (including nonTEC wastewater streams not easily segregated) for each facility type. This wastewater volume is

referred to as the “target flow” for each facility type. Table 9-5 presents target flows for existing

facilities by facility type. Development of the target flows is described in Section 9.2.7.2.

EPA did not include water conservation practices as a costing strategy for the

Barge/Chemical & Petroleum Subcategory because of the high variability in wastewater volumes

required for barge cleaning. For example, tanks with an interior frame require more water to

clean, and some barges are only cleaned every few years and may accumulate significant amounts

of residue which require greater volumes of water to clean. 

9.2.7.1 Flow Reduction Control Technologies

Since good water conservation practices are defined by median wastewater

volumes per tank cleaned, 50% of existing TEC facilities currently operate good water

conservation practices. For the remaining 50% of TEC facilities, EPA considered a variety of

control technologies depending upon the extent of flow reduction required at a given facility to

achieve the applicable target flow. For the truck and rail subcategories, except for hoppers, the

control technologies include the following:
Section 9.0 - Costs of Technology Bases for Regulations

New tank interior cleaning system(s) include(s) solution tanks, controls, pumps, piping, catwalks, stairways, rails, and 1

spinners.

9-21

C For facilities with current flow to target flow ratios greater than 1 and less

than or equal to 1.5:

— Facility water use monitoring, and

— Personnel training in water conservation.

C For facilities with current flow to target flow ratios greater than 1.5 and

less than or equal to 2:

— Facility water use monitoring,

— Personnel training in water conservation, and

— Two new spinners and spinner covers.

C For facilities with current flow to target flow ratios greater than 2:

— Facility water use monitoring,

— Personnel training in water conservation, and

— New tank interior cleaning system(s) .

1

For the hopper subcategories, the control technologies include the following:

C For facilities with current flow to target flow ratios greater than 1:

— Facility water use monitoring, and

— Personnel training in water conservation.

In calculating compliance cost estimates (see Section 9.3.2), EPA assumed that the

flow reduction technologies are sufficient to achieve the target flow for all facilities based on the

selection criteria described above. Additional details concerning EPA’s flow reduction

methodology, the flow reduction control technologies, and application of the flow technologies

are included in the TECI cost model documentation contained in the rulemaking record.
Section 9.0 - Costs of Technology Bases for Regulations

9-22

9.2.7.2 Development of Target Flows

Waste streams considered in developing the target flows include TEC process

wastewater. TEC process wastewater includes the following waste streams:

C Water and steam used to clean tank and container interiors;

C Prerinse cleaning solutions;

C Chemical cleaning solutions;

C Final rinses;

C Tank or trailer exterior cleaning wastewater;

C Equipment and floor washings; and

C TEC-contaminated stormwater.

The following waste streams were not considered in developing the target flows:

C Bilge and ballast waters;

C Non-TEC process wastewaters;

C Sanitary wastewater;

C Tank hydrotesting water; and

C Wastewater generated from rebuilding or maintenance activities.

Target flows were calculated based on responses to the Detailed Questionnaire. 

EPA first reviewed wastewater streams discharged by each facility and classified these streams as

described above. EPA then calculated a facility-specific production-normalized flow expressed in

gallons of wastewater discharged per tank cleaned based on the TEC process wastewater flow

rate and the annual number of tanks cleaned. Facilities that clean tanks representing multiple

modes of transportation (e.g., road, rail, or inland waterway) or that clean both tanks and closedtop hoppers are considered multi-subcategory facilities. For the purpose of developing the target

flows, these facilities were assigned a primary subcategory, and the flow contribution of any

secondary subcategory was not considered in the analysis.

For each facility type, using the facility-specific production-normalized flows and

the corresponding facility-specific survey weighting factors, EPA performed a statistical analysis

to determine the median wastewater volume generated per tank cleaned. Detailed information
Section 9.0 - Costs of Technology Bases for Regulations

9-23

concerning calculation of the target flows is included in the Statistical Support Document for the

final rule (2).

9.2.8 Contract Haul in Lieu of Treatment

For some facilities, particularly those with lower flow rates, contract hauling is less

expensive than performing on-site treatment. For those facilities, EPA estimates compliance costs

based on contract hauling wastewater for off-site treatment instead of the technology bases for the

particular regulatory option.

To assess contract hauling in lieu of treatment, EPA compares the net present cost

of contract hauling the wastewater for off-site treatment to the net present cost of treating that

wastewater on site for each regulatory option (assuming 7% interest and a 15-year equipment life

span for all capital equipment). Capital and annual costs estimated for contract hauling

wastewater include a wastewater storage tank, repair labor, O&M materials, and transport and

off-site disposal of the wastewater.

9.2.9 Costing Methodology for Direct Dischargers in the Barge/Chemical &

Petroleum Subcategory

EPA did not use the cost model to estimate compliance costs for direct dischargers

in the Barge/Chemical & Petroleum Subcategory. Due to the small number of model facilities, the

fact that all of the direct dischargers currently operate biological treatment, and the addition of

new wastewater characterization data for the subcategory, EPA believed that it would be more

appropriate to consider each model facility on an individual basis rather than use the cost model. 

EPA gathered information from the Detailed Questionnaire to determine technologies currently in

place (Table L) and current discharge limits (Table P) for each model facility. In general, facilities

supplied discharge data for only conventional and classical pollutants, and some metals; however,

there are several semi-volatile pollutants that are considered pollutants of interest for the

subcategory. EPA used BOD and/or COD data to assess current treatment performance for these
Section 9.0 - Costs of Technology Bases for Regulations

9-24

facilities and to determine if the semi-volatile limitations are currently achieved. For model

facilities whose effluent data do not meet the BOD and/or COD long term averages, additional

capacity was added to existing biological treatment systems to increase the residence time and/or

aeration of biological treatment. Additional capacity and additional aeration are also assumed to

achieve the long-term averages for BOD and COD as well as organics. For model facilities whose

effluent data do not meet the TSS long term averages, polymer-assisted clarification costs and

additional sludge handling costs were added. Additional operator training costs were also

included in any costed upgrade.

9.3 Design and Cost Elements for Pollutant Control Technologies

This section presents detailed information regarding cost model components and

specific technologies modeled in the cost model.

9.3.1 Cost Model Components

The TECI cost model consists of several programming components, which can be

grouped into four major categories:

C Model shell programs;

C Primary model drivers;

C Data storage files; and

C Technology drivers and modules.

The model shell includes programs that create the various menus and user interfaces that accept

user inputs and pass them to the appropriate memory storage areas. The primary model drivers

are programs that access technology drivers in the appropriate order for each option and process

the model-generated data. Data storage files are databases that contain cost model input and

output data. Information typically stored in data storage files includes:
Section 9.0 - Costs of Technology Bases for Regulations

9-25

C Flow, production, and operating data associated with each wastewater

stream;

C Pollutant concentrations associated with each wastewater stream; and 

C Facility-specific data regarding existing technologies in place (discussed in

Section 9.2.5).

Technology drivers and modules are programs that calculate costs and pollutant

loadings for a particular pollutant control technology. EPA developed cost modules for the water

conservation practices and wastewater treatment technologies included in the regulatory options

for the TECI.

The technology drivers perform the following functions, as applicable, for each

technology costed for a facility:

C Locate and open all necessary input data files;

C Store input data entered by the user of the model;

C Open and run the appropriate technology modules; and

C Calculate and track the following types of information generated by each

technology module:

— Total direct capital costs,

— Total direct annual costs,

— Electricity use and associated cost,

— Water use and associated cost,

— Sludge generation and associated disposal costs,

— Solid waste generation and associated disposal costs,

— Waste oil generation and associated disposal costs,

— Effluent flow rate, and

— Effluent pollutant concentrations.

The following table lists the treatment technologies that are modeled in the cost

model. Sections 9.3.2 through 9.3.20 discuss the technology modules.
Section 9.0 - Costs of Technology Bases for Regulations

9-26

Cost Module Section Number

Flow Reduction 9.3.2

Equalization 9.3.3

Oil/Water Separation (Vertical Tube Coalescing) 9.3.4

Oil/Water Separation (API) 9.3.5

Oil/Water Separation (Gravity) 9.3.6

Gravity Separation 9.3.7

Chemical Oxidation, Neutralization, Coagulation, Clarification 9.3.8

Dissolved Air Flotation (DAF) (with pH Adjustment and Chemical Addition) 9.3.9

DAF (No Chemical Addition) 9.3.10

Filter Press (For Wastewater Clarification and Sludge Dewatering) 9.3.11

Biological Treatment 9.3.12

Biological Treatment with Extended Aeration and Polymer-Assisted Clarification 9.3.13

Activated Carbon Adsorption (Vessels) 9.3.14

Organo-Clay/Activated Carbon Adsorption 9.3.15

Reverse Osmosis 9.3.16

Sludge Dewatering 9.3.17

Contract Haul of Wastewater in Lieu of Treatment 9.3.18

Compliance Monitoring 9.3.19

Waste Hauling 9.3.20

9.3.2 Flow Reduction

In this module, EPA estimates costs for a facility to install wastewater reduction

technologies in order to reduce the volume of wastewater generated per tank cleaned. The flow

reduction module design is based on the ratio of the current volume of wastewater generated per

tank cleaned to the target volume of wastewater generated per tank cleaned. The target volume of

wastewater generated per tank cleaned is discussed in Section 9.2.7. The module compares the

target flow to the current flow and costs facilities for different flow reduction technologies based

on their subcategory and/or the magnitude of their ratio of target flow to current flow (the “flow

ratio”). Facilities with a flow ratio less than or equal to 1 (i.e., facilities generating less than the

target flow of wastewater per tank cleaned) are not costed in the flow reduction module. 
Section 9.0 - Costs of Technology Bases for Regulations

9-27

Where the TECI cost model reduces facility wastewater flow rates through volume

reduction, specific capital and O&M costs are estimated to account for the costs those facilities

would incur to implement flow reduction technologies and practices. Because of the variation in

tank types and cleaning practices between subcategories, the costs for implementing flow

reduction technologies are different for each subcategory. EPA did not include flow reduction

costs for the Barge/Chemical & Petroleum Subcategory due to the wide variation in wastewater

volumes generated per cleaning.

EPA bases the implementation costs for flow reduction on data received in

response to the TECI Detailed Questionnaire, technologies and practices observed during site

visits and sampling episodes at TEC facilities, information received from vendors on the flow

reduction technologies, and technical literature. However, EPA does not have information

available for every costed facility to determine the extent to which flow reduction is achievable

and the exact equipment components and changes in standard operating procedures necessary to

achieve the flow reductions estimated by the cost model. Although the cost model estimates costs

incurred and wastewater volume reduction achieved by flow reduction, the costs and flow

reductions may not be completely accurate for every costed facility due to limitations in the

available data. However, EPA believes that the cost model accurately estimates the flow

reduction and associated costs for the industry as a whole. 

Capital and annual costs for the following equipment and practices listed below are

included in the flow reduction module:

C Replacement tank cleaning system (Truck/Chemical & Petroleum,

Rail/Chemical & Petroleum, and Food Subcategories (except barge/food

facilities));

C Two spinners - one high flow for cleaning solution and one low flow for

rinse (Truck/Chemical & Petroleum, Rail/Chemical & Petroleum, and Food

Subcategories (except barge/food facilities)); and

C Cleaning crew training and wastewater flow rate monitoring for all

subcategories (except Barge/Chemical & Petroleum facilities).
WS ' (CWG × NT) & (RFWG × NT)

Section 9.0 - Costs of Technology Bases for Regulations

9-28

Annual costs include tank cleaning crew training and wastewater flow rate monitoring. Annual

costs for operating a replacement tank cleaning system and spinners are assumed to equal baseline

costs for operating existing tank cleaning systems; therefore, no additional annual costs are

calculated in the cost module for implementing these technologies. 

The flow reduction module uses information from responses to the Detailed

Questionnaire on current wastewater generation per tank and the number of tanks cleaned along

with the target flow (described in Section 9.2.7) to estimate the annual cost credits (i.e., negative

annual costs) for savings from reduced water usage. The total volume of water saved is shown by

the following equation:

(3)

where:

WS = Water savings (gallons/year)

CWG = Current wastewater generated per tank cleaned (gallons)

NT = Number of tanks cleaned per year

RFWG = Target flow wastewater generated per tank cleaned

(gallons) (see Table 9-5 for specific target flows)

The volume of water saved is then multiplied by the cost of fresh water (as described in Section

9.2.4.2) to estimate monetary savings from reductions in wastewater use.

9.3.3 Equalization

In this module, EPA estimates costs for a facility to install and operate an

equalization tank(s) to accumulate wastewater in order to reduce wastewater variability and to

optimize the size, effectiveness, and operating costs for the subsequent treatment units. The

required equalization tank size depends on a minimum wastewater residence time. Minimum

residence times vary by subcategory (details provided in Section 8.0) based on the ratio of
Section 9.0 - Costs of Technology Bases for Regulations

9-29

equalization tank size to total wastewater flow rate as observed during EPA sampling episodes

and site visits. The equalization module calculates the costs necessary to operate an equalization

unit as well as to adequately mix wastewater.

Capital and annual costs for the following equipment are included in the

equalization module:

C Equalization tank(s); and

C Aerators/mixer(s).

Annual costs include operational labor, maintenance and repair labor, O&M materials, and

electricity. The costs associated with the equalization tank(s) are based on tank volume necessary

to perform adequate equalization of TEC wastewater, as observed during EPA site visits and

sampling episodes. The costs associated with the aerator/mixer(s) are based on the motor

horsepower required to adequately mix the wastewater in the equalization tank, as observed

during EPA site visits and sampling episodes.

9.3.4 Oil/Water Separation (Vertical Tube Coalescing)

In this module, EPA estimates costs for a facility to install and operate a vertical

tube coalescing oil/water separator to remove entrained oil and grease. The oil/water separation

module calculates the costs necessary to treat wastewater using a vertical tube coalescing

separator and a demulsifier that is added to the wastewater to aid in oil separation. The module

also calculates the costs for removing, storing, and disposing of floating oil and settled solids.

Capital and annual costs for the following equipment are included in the vertical

tube coalescing oil/water separator module:

C A demulsifier feed system (including a metered-flow pump and

demulsifier);
Section 9.0 - Costs of Technology Bases for Regulations

9-30

C An influent wastewater transfer pump;

C An oil/water separator unit (including a water level probe and control

system);

C An oil storage tank;

C A sludge transfer pump; and

C A sludge storage tank.

Annual costs include operational labor, maintenance and repair labor, O&M materials, electricity,

raw materials (i.e., demulsifier), and oil and settled solids disposal. The oil/water separator

observed during EPA site visits and sampling episodes at TEC facilities is sized with 25% excess

capacity due to fluctuations in daily wastewater flows. EPA likewise estimates vertical tube

coalescing oil/water separator costs based on a unit with a capacity that exceeds average daily

wastewater flow rates by 25%.

The demulsifier feed system costs are based on the feed rate of demulsifier

observed during EPA site visits and sampling episodes. The costs associated with the wastewater

transfer and sludge transfer pumps are based on the horsepower necessary to pump wastewater

and sludge at the flow rates estimated by the oil/water separator module.

The waste oil storage tank and sludge storage tank costs are based on tank

volume. The oil storage tank and sludge storage tank are sized to hold the volume of oil and

sludge, respectively, collected over a period of one month.

EPA assumes that floating oils and settled solids will be disposed off site once per

month, based on observations made during site visits and sampling episodes. Waste disposal

costs are calculated separately in the waste haul module (see Section 9.3.20). The oil/water

separator module calculates the amount of oil to be disposed using the difference between the

influent and effluent average total oil and grease concentrations. The oil/water separator module

calculates the amount of sludge to be disposed using the difference between the influent and
Section 9.0 - Costs of Technology Bases for Regulations

9-31

effluent average total suspended solids concentrations. EPA assumes that the waste oil stream

comprises 95% oil and the settled solids stream comprises 4% solids, based on assumptions used

in the MP&M cost model.

9.3.5 Oil/Water Separation (American Petroleum Institute [API] Separator)

In this module, EPA estimates costs for a facility to install and operate an API

oil/water separator to remove entrained oil and grease. The module calculates costs necessary to

operate an API separator with a slotted pipe surface oil skimmer, a fabric belt skimmer for

entrained thin oils, and a bottom sludge rake. The module also calculates the costs to remove,

store, and dispose of skimmed oils and settled solids.

Capital and annual costs for the following equipment are included in the API

oil/water separator module:

C An API oil/water separator;

C A wastewater transfer pump;

C An oil storage tank; and

C A sludge storage tank.

Annual costs include operational labor, maintenance and repair labor, O&M materials, electricity,

and disposal of residual oil and settled solids. The API oil/water separator costs are based on the

ratio of API oil/water separator nominal capacity to wastewater flow rate observed during EPA

site visits and sampling episodes at TEC facilities. The unit nominal capacity is four times that

needed to accommodate facility average daily wastewater flow rates to account for fluctuations in

daily wastewater flow and to allow for ample wastewater residence. The unit uses two motors, a

scraper/skimmer motor, and an oil collection belt skimmer motor. Electricity costs are based on

motor horsepower necessary to operate the scraper/skimmer and oil collection belt skimmer. 

The wastewater transfer pump costs are based on the influent wastewater flow rate

for each facility. The pump is designed to operate at a flow rate of one-half the stated maximum
Section 9.0 - Costs of Technology Bases for Regulations

9-32

capacity of the pump. Electricity costs are based on motor horsepower necessary to transfer

wastewater at the flow rates estimated by the oil/water separator module. 

The waste oil storage tank and sludge storage tank costs are based on tank

volume. The oil storage tank and the sludge storage tank are sized to hold the volume of oil and

the volume of sludge, respectively, collected over a period of one month.

EPA assumes that floating oils and settled solids will be disposed off site once per

month (provided sludge dewatering is not costed as part of the regulatory option) based on

observations made during site visits and sampling episodes. Waste disposal costs are calculated

separately in the waste haul module (see Section 9.3.20). The API oil/water separator module

calculates the amounts of oil and sludge to be disposed based on the ratios of the oil and sludge

generation rates to the facility wastewater flow rates observed during EPA site visits and sampling

episodes at TEC facilities. If sludge dewatering is costed, the sludge is costed to be pumped from

the sludge storage tank to the filter press (the costs for the sludge pump are included in the sludge

dewatering module (see Section 9.3.17)). EPA assumes that the waste oil stream comprises 95%

oil and the settled solids stream comprises 4% solids, based on assumptions used in the MP&M

cost model.

9.3.6 Oil/Water Separation (Gravity)

In this module, EPA estimates costs for a facility to install and operate a gravity

oil/water separator to remove floating oils from raw wastewater. The module also calculates the

costs necessary to remove, store, and dispose of floating oils. For the Food Subcategory, no oil

disposal costs are incurred because EPA assumes oil will be recycled to animal feed and/or soap

manufacturing based on practices observed during EPA site visits and sampling episodes at TEC

facilities. The module calculates the costs for removing, storing, and disposing of settled solids

for the Food Subcategory but not for the Barge/Chemical & Petroleum Subcategory because EPA

assumes gravity oil/water separators at Barge/Chemical & Petroleum facilities will generate a
Section 9.0 - Costs of Technology Bases for Regulations

9-33

negligible amount of settled solids based on observations made during EPA site visits and

sampling episodes.

Capital and annual costs for the following equipment are included in the gravity

oil/water separation module:

C A gravity oil/water separator;

C Two wastewater transfer pumps (only one for Barge/Chemical &

Petroleum);

C An oil transfer pump;

C An oil storage tank (Barge/Chemical & Petroleum only);

C A sludge transfer pump (Food only); and

C An oil/water separator effluent pump (Barge/Chemical & Petroleum only).

Annual costs include operational labor, maintenance and repair labor, O&M materials, electricity,

and residual disposal costs. The gravity oil/water separator costs are based on tank volume

designed to provide a wastewater residence time of 6.4 days, as observed during EPA site visits

and sampling episodes at TEC facilities.

The wastewater transfer pumps and oil transfer pump costs are based on the

respective wastewater and oil flow rates estimated by the oil/water separator module. The pumps

are designed to operate at an average flow rate of one-half the stated maximum flow-rate capacity

of the pump. Electricity costs are based on the pump motor horsepower necessary to transfer

wastewater and oil at the flow rates estimated by the oil/water separator module. The sludge

transfer pump costs are based on the horsepower necessary to pump sludge at the flow rates

estimated by the oil/water separator module. The effluent wastewater pump costs are based on

effluent wastewater flow rate. Electricity costs are based on the motor horsepower necessary to

pump wastewater to the subsequent treatment unit.
Section 9.0 - Costs of Technology Bases for Regulations

9-34

Oil and sludge management practices are based on practices observed during EPA

site visits and sampling episodes at TEC facilities. For the Barge/Chemical & Petroleum

Subcategory, oil is collected in a tank and assumed to be hauled off site every 5 days. Oil storage

tank costs are based on the tank volume necessary to hold the oil generated over a 5-day period. 

For the Food Subcategory, oil is pumped directly from the gravity oil/water separator tank for

off-site disposal twice per year. Sludge is collected either directly from the gravity oil/water

separator tank and hauled off site for disposal once per month or pumped to a sludge storage tank 

(included in the biological treatment module) for subsequent on-site sludge dewatering. Waste

disposal costs are calculated separately in the waste haul module (see Section 9.3.20). The oil

and sludge volumes generated (where applicable) are calculated based on the ratios of the oil and

sludge generation rates to the facility wastewater flow rates observed during EPA site visits and

sampling episodes at TEC facilities. EPA assumes that the waste oil stream comprises 95% oil

and the settled solids stream comprises 4% solids, based on assumptions used in the MP&M cost

model. 

9.3.7 Gravity Separation

In this module, EPA estimates costs for a facility to install and operate a gravity

separator to remove suspended solids from raw wastewater by settling to the bottom of the unit. 

The module also calculates the costs for removing, storing, and disposing of settled solids. 

Capital and annual costs for the following equipment are included in the gravity

separation module:

C A gravity separator tank;

C Two wastewater transfer pumps; and

C A sludge transfer pump (if sludge generation is less than 1,265 gallons per

month).
Section 9.0 - Costs of Technology Bases for Regulations

9-35

Annual costs include operational labor, maintenance and repair labor, O&M materials, electricity,

and residual disposal costs. The gravity separator tank costs are based on a tank volume designed

to provide a wastewater residence time of 4 days, as observed during EPA site visits and sampling

episodes at TEC facilities.

The wastewater transfer pump costs are based on influent wastewater flow rate. 

The pumps are designed to operate at a flow rate of one-half the stated maximum flow rate

capacity of the pumps. Electricity costs are based on motor horsepower necessary to transfer

wastewater at the flow rates estimated by the gravity separator module. The sludge transfer

pump costs are based on motor horsepower necessary to transfer sludge at the flow rates

estimated by the gravity separator module.

EPA assumes that settled solids will be disposed off site once per month based on

observations made during site visits and sampling episodes at TEC facilities. Waste disposal costs

are calculated separately in the waste haul module (see Section 9.3.20). The sludge volume

generated by the gravity separator is calculated based on the ratios of the sludge generation rates

to the facility wastewater flow rates observed during EPA site visits and sampling episodes at

TEC facilities. Sludge is assumed to accumulate in the bottom of the gravity separator tank. If

the monthly sludge generation is less than 1,265 gallons, it is more economical for a facility to

pump the sludge into drums for disposal. Otherwise, a vacuum truck (provided by the sludge

disposal company) would be used to remove the sludge. EPA assumes the settled solids stream

comprises 4% solids, based on engineering literature.

9.3.8 Chemical Oxidation, Neutralization, Coagulation, and Clarification

In this module, EPA estimates costs for a facility to install and operate a turn-key

treatment system consisting of four reaction tanks in series and a clearwell. Treatment steps

include: chemical oxidation to oxidize organic pollutants using hydrogen peroxide; neutralization

to adjust wastewater pH; coagulation to destabilize suspended matter using polyalum chloride (an

electrolyte); and clarification to settle and remove agglomerated solids using a polymer flocculant. 
Section 9.0 - Costs of Technology Bases for Regulations

9-36

The module calculates costs necessary for the turn-key treatment system, including the reaction

tanks, clearwell, chemical feed systems, mixers, control system, and two sludge storage tanks. 

The module also calculates the costs to collect solids from the bottom of the clarifier and pump

the sludge into a sludge storage tank for subsequent dewatering.

Capital and annual costs for the following equipment are included in the chemical

oxidation, neutralization, coagulation, and clarification module:

C Four reaction tanks;

C Two sludge storage tanks;

C A clearwell;

C Five chemical feed systems;

C Two mixers;

C An influent wastewater pump;

C A sludge pump (sized at 20 gpm); and

C A control system.

Annual costs include operational labor, maintenance and repair labor, O&M materials, and

electricity. The turn-key package system costs are based on the nominal wastewater flow rate

capacity of the unit. The turn-key package system observed during EPA sites visits and sampling

episodes at TEC facilities is sized with 25% excess capacity due to fluctuations in daily

wastewater flows. EPA likewise estimates turn-key package system costs based on a unit with a

capacity that exceeds daily wastewater flow rates by 25%. Electricity costs for the mixers,

chemical feed systems, and sludge pump are based on motor horsepower necessary to operate the

turn-key unit.

9.3.9 DAF (with pH Adjustment and Chemical Addition)

In this module, EPA estimates costs for a facility to install and operate a DAF unit

designed to remove entrained solid or liquid particles. The module calculates the costs necessary

to operate a DAF unit with a recycle pressurization system, chemical addition systems for
Section 9.0 - Costs of Technology Bases for Regulations

9-37

polymers (coagulants and flocculant) and pH adjustment, and a sludge collection tank. The

module also calculates costs for a pre-engineered building to enclose the treatment unit.

Capital and annual costs for the following equipment are included in the DAF

module:

C A wastewater transfer pump;

C A chemical treatment tank system;

C A polymer mixing tank system;

C A polymer dilution tank system;

C A DAF unit;

C An air compressor;

C A sludge storage tank; and

C A pre-engineered building.

Annual costs include operational labor, maintenance and repair labor, O&M materials, electricity,

and chemical costs. The DAF unit observed during EPA site visits and sampling episodes at TEC

facilities is sized with 30% excess capacity due to fluctuations in daily wastewater flows. EPA

likewise estimates DAF unit costs based on a unit with a capacity that exceeds daily wastewater

flow rates by 30%. The unit uses two motors: a surface skimmer motor and a pressurization

motor pump. Electricity costs are based on motor horsepower necessary to operate the surface

skimmer motor and pressurization pump. 

The wastewater transfer pump costs are based on influent wastewater flow rate. 

Pumps are designed to operate at a flow rate of one-half the stated maximum capacity of the

pump. Electricity costs are based on motor horsepower necessary to transfer wastewater at the

influent wastewater flow rates.

The chemical treatment tank system consists of a treatment tank, mixer, pH probe,

acid metering pump, and caustic metering pump. The treatment tank costs are based on the ratio

of tank volume to wastewater flow rate observed during EPA site visits and sampling episodes at

TEC facilities. The mixer costs are based on tank volume and motor horsepower necessary to
Section 9.0 - Costs of Technology Bases for Regulations

9-38

operate the mixer. The pH probe and acid metering pump costs are the same for every facility.

The caustic metering pump costs are based on tank volume. Sulfuric acid (93%) and sodium

hydroxide (50%) are added to the wastewater. The volume of chemicals added is based on the

ratio of chemical addition to wastewater flow rate observed during EPA site visits and sampling

episodes at TEC facilities.

The polymer mixing tank system consists of a mixing tank, a mixer, and two

metering pumps. The tank costs are based on the ratio of mixing tank volume to wastewater flow

rate observed during EPA site visits and sampling episodes at TEC facilities. The mixer costs are

based on tank volume and motor horsepower necessary to operate the mixer. The metering pump

cost is the same for every facility. The polymer dilution tank system consists of the same

components as the polymer mixing tank system except it includes only one metering pump. 

Polymer addition rates are based on the ratio of polymer addition to wastewater flow rate

observed during EPA site visits and sampling episodes at TEC facilities.

The sludge storage tank costs are based on the ratio of sludge storage tank volume

to wastewater flow rate observed during EPA site visits and sampling episodes at TEC facilities. 

Sludge is collected in the storage tank before being dewatered. (Costs for a sludge storage tank

designed to collect sludge over the period of a month were estimated for facilities currently

operating a DAF unit without sludge dewatering.) Costs for sludge dewatering are estimated in

the sludge dewatering module (see Section 9.3.17). The DAF unit sludge generation rates are

based on information gathered from the Detailed Questionnaire from facilities operating DAF

units with chemical addition.

The pH adjustment and DAF units are housed in the pre-engineered building to

provide protection from poor weather conditions. The pre-engineered building costs are based on

the square footage of building space needed to house the DAF unit and associated equipment. 

Since differences in the sizes of equipment housed in the pre-engineered building are minor, costs

for all facilities are estimated for the same building size.
Section 9.0 - Costs of Technology Bases for Regulations

9-39

9.3.10 DAF (without Chemical Addition)

In this module, EPA estimates costs for a facility to install and operate a DAF unit

designed to remove entrained solid or liquid particles. The module calculates the costs necessary

to operate a DAF unit and collect solids for disposal off site (for facilities with treatment in place

but no sludge dewatering on site) or for on-site sludge dewatering. 

Capital and annual costs for the following equipment are included in this DAF

module:

C A DAF unit; and

C A sludge storage tank.

Annual costs include operational labor, maintenance and repair labor, O&M materials, electricity,

and residual disposal (if sludge dewatering costs are not included). The DAF unit costs are based

on the ratio of DAF unit capacity to wastewater flow rate observed during EPA site visits and

sampling episodes at TEC facilities. Electricity costs are based on the motor horsepower

necessary to operate the DAF unit. 

A sludge storage tank is only included in baseline options where a facility does not

operate sludge dewatering on site. A sludge storage tank is sized to hold the volume of sludge

collected over a period of one month. Waste disposal costs are calculated separately in the waste

haul module (see Section 9.3.20). The sludge storage tank costs are based on volume. The DAF

module calculates the amount of sludge to be disposed based on the ratio of DAF sludge

generation rate to wastewater flow rate observed during EPA site visits and sampling episodes at

TEC facilities. EPA assumes that the DAF sludge comprises 4% solids, based on assumptions

used in the MP&M cost model.
Section 9.0 - Costs of Technology Bases for Regulations

9-40

9.3.11 Filter Press (for Wastewater Clarification and Biological Treatment Sludge

Dewatering)

In this module, EPA estimates costs for a facility to install and operate a single

filter press for two operations: wastewater clarification and biological treatment sludge

dewatering. During wastewater treatment operating hours, the filter press functions as a

wastewater clarifier. Following wastewater treatment operating hours, the filter press dewaters

sludge from biological treatment. The module calculates the costs necessary to filter and store

wastewater before being discharged or pumped to subsequent treatment units. The module also

calculates annual costs associated with sludge dewatering. The filter press is designed to treat

one batch of wastewater per day and one batch of biological treatment sludge per day.

Capital and annual costs for the following equipment are included in the filter press

module:

C An influent pump and compressor;

C A diatomaceous earth precoat tank;

C A diatomaceous earth precoat pump and compressor; 

C A filter press; and

C An effluent storage tank.

Annual costs include operational labor, maintenance and repair labor, O&M materials, electricity,

and residual disposal. Based on observations made during EPA site visits and sampling episodes,

EPA assumes that both operations generate equal daily volumes of dewatered sludge. Dewatered

sludge volumes are based on the ratio of dewatered sludge generation rate to wastewater flow

rate observed during EPA site visits and sampling episodes at TEC facilities. The filter press

volume is based on and equal to the volume of dewatered sludge from either one of the operations

(since they are assumed to generate equal volumes). Waste disposal costs are calculated

separately in the waste haul module (see Section 9.3.20) and are based on the total volume of

dewatered sludge from both filter press operations. EPA assumes the dewatered filter cake

volume comprises 32% solids, based on engineering literature. 
Section 9.0 - Costs of Technology Bases for Regulations

9-41

The influent pump and precoat transfer pump costs are based on influent

wastewater flow rate. Electricity costs for the pumps are based on motor horsepower necessary

to transfer wastewater and polymer at the flow rates estimated by the filter press module.

The diatomaceous earth precoat tank costs and effluent storage tank costs are

based on tank volumes recommended by filter press vendors. The amount of diatomaceous earth

necessary to treat wastewater and biological treatment sludge is based on the ratio of

diatomaceous earth usage rate to wastewater flow rate observed during EPA site visits and

sampling episodes at TEC facilities. 

9.3.12 Biological Treatment

In this module, EPA estimates costs for a facility to install and operate a biological

oxidation unit used to decompose organic constituents. The module calculates costs necessary

for operating an aerobic biological treatment unit consisting of two preaeration tanks, a posttreatment clarifier, and a sludge storage tank. A portion of the sludge is recycled by pumping the

sludge from the clarifier to the second preaeration tank. Sludge is also pumped from the clarifier

into a sludge storage tank for subsequent dewatering. 

Capital and annual costs for the following equipment are included in the biological

treatment module:

C Wastewater transfer pumps;

C Two preaeration tanks;

C Diffusers/blowers;

C A biological reactor tank;

C A clarifier;

C A sludge storage tank;

C A sludge pump; and

C A biological treatment effluent discharge pump.
Section 9.0 - Costs of Technology Bases for Regulations

9-42

Annual costs include operational labor, maintenance and repair labor, O&M materials, electricity,

and residual disposal. The biological reactor capital and annual costs are based on a tank volume

designed to provide a wastewater residence time of 4.6 days, as observed during EPA site visits

and sampling episodes at TEC facilities. Annual additions of microorganisms to the biotreatment

unit is based on the ratio of microorganism addition rate to wastewater flow rate observed during

EPA site visits and sampling episodes at TEC facilities. 

The wastewater transfer pump costs are based on influent wastewater flow rate. 

Electricity costs for the pumps are based on motor horsepower necessary to transfer wastewater

at the influent flow rate. The diffuser/blower costs are based on the ratio of air flow rate to

wastewater flow rate observed during EPA site visits and sampling episodes at TEC facilities.

The preaeration and sludge storage tank volumes are based on the ratio of tank

volume to wastewater flow rate observed during EPA site visits and sampling episodes at TEC

facilities. The sludge and effluent discharge pump costs are based on motor horsepower

necessary to transfer sludge and wastewater at the flow rates estimated by the biological treatment

module. 

The clarifier is used to settle sludge following the biological digestion in the

biological reactor. Clarifier costs are based on the ratio of clarified volume to wastewater flow

rate observed during EPA site visits and sampling episodes at TEC facilities.

9.3.13 Biological Treatment with Extended Aeration and/or Polymer-Assisted

Clarification

These treatment technologies only apply to the Barge/Chemical & Petroleum

Subcategory; therefore, no electronic cost module was developed. EPA estimates costs for a

facility to install and operate additional aerators and polymer-assisted clarification for those

facilities not currently meeting the BOD, COD, and/or TSS long term averages. These
Section 9.0 - Costs of Technology Bases for Regulations

9-43

technologies are applicable to waste streams following primary treatment, such as oil/water

separation or equalization. 

Capital and annual costs for the following equipment are included in the treatment

technology estimates:

C Polymer addition system (e.g., feed pump); and

C Aeration diffusers and blowers.

Annual costs include operational labor, maintenance and repair labor, O&M materials, chemical

costs, electricity, and residual disposal. The polymer feed pump capital and annual costs are

based on a Garratt-Callahan Polymer 7622 metering pump which can accommodate 0.02 to 0.6

gallons per hour of polymer. The aeration diffusers and blowers capital and annual costs are

based on the additional oxygen requirement at each facility. 

The polymer metering pump cost is the same for every facility. Polymer addition

rates are based on the ratio of polymer addition to wastewater flow rate based on data from the

Pharmaceutical Manufacturing Industry cost model. Residual disposal costs are based on the

incremental volume of solids removed by subtracting the TSS treatment effectiveness

concentration from the current effluent TSS concentration and converting the difference to either

an incremental filter cake volume or raw sludge volume.

Aeration diffusers and blowers costs are based on the additional volume of oxygen

required based on a facility’s influent BOD concentration and assuming the treatment

effectiveness concentration is achieved. In addition to operational and repair labor, costs for

materials, electricity, and labor training are included to optimize biological treatment performance. 
Section 9.0 - Costs of Technology Bases for Regulations

9-44

9.3.14 Activated Carbon Adsorption (Vessels)

In this module, EPA estimates costs for a facility to install and operate an activated

carbon adsorption system used as a tertiary treatment technology applicable to waste streams

following treatment by chemical oxidation, neutralization, coagulation, and clarification. The

module calculates costs necessary for operating two activated carbon columns in series. Spent

carbon is assumed to require off-site regeneration once per month.

Capital and annual costs for the following equipment are included in the granular

activated carbon module:

C Two wastewater transfer pumps; 

C Two bag filters operated in series;

C A backwash tank; and

C Two carbon adsorption filters.

Annual costs include operational labor, maintenance and repair labor, O&M materials, electricity,

chemicals (media changeout), weekly COD monitoring, and residual disposal. The capital and

annual costs associated with the carbon adsorption filters are based on the ratios of activated

carbon system size and carbon usage rate to wastewater flow rate observed during EPA site visits

and sampling episodes at TEC facilities.

The costs associated with the wastewater transfer pumps are based on influent

wastewater flow rate. Electricity costs are based on motor horsepower necessary to operate the

carbon adsorption system.

The costs associated with the bag filters are based on two carbon steel 2-inch

housings with 5-micron bag filters. Bag costs are based on using one bag per operating day, and

labor costs are based on operating days per year. The backwash tank volume is based on the

volume required to hold 30 minutes worth of daily wastewater flow at the facility. Operational

labor to backwash the system is included. 
Section 9.0 - Costs of Technology Bases for Regulations

9-45

EPA assumes that one column of spent activated carbon is changed out once per

month. Media change-out costs include costs for labor and fresh media. Weekly COD

monitoring of influent and effluent from the carbon vessels is included to test the effectiveness of

the carbon. Spent carbon is assumed to be sent off site for regeneration. Media change-out costs

include costs for labor and fresh media. For cost estimating purposes, EPA assumes that TEC

facilities typically operate an average of 265 days per year. Costs are adjusted for facilities

operating less than 265 days per year by multiplying “typical” residual regeneration costs by a

factor consisting of actual operating days divided by 265.

9.3.15 Organo-Clay/Activated Carbon Adsorption

In this module, EPA estimates costs for a facility to install and operate an organoclay adsorption unit followed by a granular activated carbon unit for wastewater polishing. The

module calculates costs to operate two columns in series (organo-clay followed by activated

carbon) with nominal carbon change-out frequency of one vessel per month and nominal organoclay change-out frequency of one vessel per two months.

Capital and annual costs for the following equipment are included in the organoclay/activated carbon adsorption module:

C A wastewater transfer pump; 

C An organo-clay vessel; and

C A granular activated carbon vessel.

Annual costs include operational labor, maintenance and repair labor, electricity, chemicals

(media), and residual disposal. The costs associated with the organo-clay vessel and granular

activated carbon vessels are based on the ratio of filter media volume to influent flow rate

observed during EPA site visits and sampling episodes at TEC facilities. 

The costs associated with the wastewater transfer pump are based on influent

wastewater flow rate. The pump is designed to operate at a flow rate of one-half the stated
Section 9.0 - Costs of Technology Bases for Regulations

9-46

maximum capacity of the pump. Electricity costs are based on motor horsepower necessary to

transfer influent wastewater.

The design media change-out frequency is once per month for granular activated

carbon, and once every two months for organo-clay, based on information provided by treatment

system vendors. Spent carbon is assumed to be sent off site for regeneration or disposal and

spent clay is assumed to be sent off site for incineration. Media change-out costs include costs for

labor and fresh media. Residual disposal costs include costs for waste shipping and media

disposal.

9.3.16 Reverse Osmosis

In this module, EPA estimates costs for a facility to install and operate a reverse

osmosis unit for wastewater polishing. The module calculates costs necessary for wastewater

storage prior to entering the reverse osmosis unit, and the reverse osmosis unit itself. The reverse

osmosis unit is operated as a double pass unit. After the first pass through the reverse osmosis

unit, the wastewater is transferred to a storage tank. When the storage tank is nearly full, the

wastewater is pumped for a second pass through the reverse osmosis unit prior to discharge. 

Concentrate from the reverse osmosis unit is recycled to the first biological treatment preaeration

tank.

Capital and annual costs for the following equipment are included in the reverse

osmosis module:

C Two reverse osmosis wastewater storage tanks;

C A reverse osmosis flooded suction tank; and

C A reverse osmosis unit.

Annual costs include operational labor, maintenance and repair labor, electricity, and membrane

and pretreatment filter replacement costs. The reverse osmosis unit capital costs are based on

influent wastewater flow rate. Electricity costs are based on motor horsepower necessary to
Section 9.0 - Costs of Technology Bases for Regulations

9-47

operate the unit at the flow rate estimated by the reverse osmosis module. Membrane and filter

replacement costs are based on influent wastewater flow rate and information provided by

treatment technology vendors. EPA estimates that membranes require replacement every five

years, and the pretreatment filter cartridges must be replaced every two months.

The reverse osmosis wastewater storage tanks and flooded suction tank costs are

based on the ratio of tank volume to wastewater flow rate observed during EPA site visits and

sampling episodes at TEC facilities.

9.3.17 Sludge Dewatering (Plate-and-Frame Filter Press)

In this module, EPA estimates costs for a facility to install and operate a plate-andframe filter press. The module calculates costs necessary to operate a plate-and-frame filter press

to dewater sludge that is generated by wastewater treatment units. 

For the Truck/Chemical & Petroleum Subcategory, EPA assumes that facilities

will use a portable pump to pump sludge from the sludge storage tanks into the filter press. 

Because EPA includes a portable pump in the oil/water separator module (see Section 9.3.4),

costs are not included for an additional pump in the sludge dewatering module for the

Truck/Chemical & Petroleum Subcategory.

Capital and annual costs for the following equipment are included in the plate-andframe filter press module:

C A plate-and-frame filter press;

C Sludge transfer pumps (Rail/Chemical & Petroleum and Food

Subcategory);

C Sludge storage tank (PSES Option 1 for the Rail/Chemical & Petroleum

Subcategory);
Section 9.0 - Costs of Technology Bases for Regulations

9-48

C Precoat (diatomaceous earth) tank (for dewatering biological treatment

sludge); and

C Precoat transfer pump and compressor (for dewatering biological treatment

sludge).

Annual costs include operational labor, maintenance and repair labor, O&M materials, electricity,

chemical costs (diatomaceous earth), and residual disposal costs. Materials costs include annual

replacement of filter press cloths. The filter press capital and annual costs are calculated using the

ratio of sludge generation rate to wastewater flow rate observed during EPA site visits and

sampling episodes at TEC facilities, as well as technical literature on sludge and filter cake solids

contents. In general EPA assumes that the press operates one batch per day; therefore, the press

volume generally equals the estimated daily volume of filter cake generation. However, for the

Truck/Chemical & Petroleum and Rail/Chemical & Petroleum Subcategories, EPA performed an

optimization analysis to determine filter press volume versus the number of batches per day based

on the filter cake generation rate and operational days per year. EPA assumes that the filter press

will operate no more than two batches per day. The cost for hauling dewatered sludge is

estimated separately in the waste haul module (see Section 9.3.20) and is based on the calculated

volume of dewatered sludge generated. EPA assumes that the dewatered sludge comprises 32 to

33% solids, based on engineering literature. A one-time sludge profile fee and roll-off box

delivery fee are also included.

The sludge transfer pump costs are based on motor horsepower necessary to

transfer sludge at flow rates estimated by the sludge dewatering module. The precoat transfer

pump costs are based on influent wastewater flow rate. Electricity costs are based on motor

horsepower necessary to transfer polymer at flow rates estimated by the sludge dewatering

module.

The diatomaceous earth precoat tank costs are based on tank volumes

recommended by filter press vendors. The amount of diatomaceous earth necessary is based on

the ratio of diatomaceous earth usage rate to wastewater flow rate observed during EPA site

visits and sampling episodes at TEC facilities. 
Section 9.0 - Costs of Technology Bases for Regulations

9-49

9.3.18 Contract Hauling of Wastewater in Lieu of Treatment

In this module, if contract hauling in lieu of treatment is appropriate, capital and

annual costs for a wastewater holding tank are included in the module. Annual costs include

maintenance and repair labor, O&M materials, transportation, and disposal of wastewater. EPA

assumes that wastewater would be accumulated in a holding tank and then disposed off site every

three months. Holding tank costs are based on the tank volume needed to contain all of the

wastewater generated by a facility over a three-month period. 

Transportation disposal costs are based on gallons of wastewater to be disposed. 

EPA uses quotes from nation-wide vendors to estimate costs for contract hauling wastewater off

site. EPA estimates a cost of $0.44/gallon (7) to contract haul wastewater off site. 

9.3.19 Compliance Monitoring

Compliance monitoring costs are included in all of the regulatory options for all

subcategories. 

In this module, EPA estimates annual compliance monitoring costs for all TEC

facilities. The annual cost calculated by the model for compliance monitoring includes laboratory

costs to analyze wastewater semivolatile organics, metals, and classical pollutants. For indirect

dischargers, EPA estimates costs for facilities to monitor monthly for all regulated pollutants (see

Section 12.3). For direct dischargers, EPA estimates costs for facilities to monitor weekly for

classical pollutants and monthly for semivolatile organics and metals. However, for direct

dischargers in the Food Subcategory, EPA estimates costs for facilities to monitor weekly for only

classical pollutants because EPA is regulating only these pollutants in the Food Subcategory. 

Costs for each type of analysis per sample were obtained from a laboratory contracted by EPA on

past wastewater sampling efforts. The table below shows the monitoring costs used in the cost

model.
Section 9.0 - Costs of Technology Bases for Regulations

9-50

Analytical Method ($1994) Reference

Laboratory Fee

Method 625 - Semi-Volatile Organic Compounds $350 (39)

Method 1620 - Metals $598 (8)

Method 1664 - HEM $35 (8)

Method 1664 - SGT-HEM $56.67 (39)

Method 401.5 - BOD $16 (8)

Method 410.4 - COD $20 (8)

Method 160.2 - TSS $6.50 (40)

9.3.20 Waste Hauling

In this module, where applicable, EPA estimates annual waste hauling costs for oil

(95% oil), undewatered sludge (approximately 4% solids), and dewatered sludge (approximately

32% solids) for all TEC facilities. The cost model calculates annual costs for waste hauling,

including labor and transportation. Cost rates are obtained from national vendors. Undewatered

sludge disposal costs are based on using either a vacuum-truck or multiple drums, depending on

the volume to be disposed. Dewatered sludge costs include an annual roll-off box rental.

9.4 Summary of Costs by Regulatory Option

Table 9-6 summarizes estimated BPT, BCT, and BAT compliance costs by

regulatory option. Table 9-7 summarizes estimated PSES compliance costs by regulatory option. 

Costs shown include capital and O&M costs (including energy usage) totaled for each

subcategory for all discharging facilities. All costs represent the estimated incremental compliance

costs to the industry. The capital costs shown in Tables 9-6 and 9-7 represent the direct capital

costs estimated by the technology modules plus the indirect capital costs discussed in Section

9.2.4.1. The annual costs shown in Tables 9-6 and 9-7 represent the direct annual costs estimated

by the technology modules plus the compliance monitoring and waste hauling costs discussed in

Sections 9.3.19 and 9.3.20, respectively.
Section 9.0 - Costs of Technology Bases for Regulations

For those references included in the administrative record supporting the TECI rulemaking, the document control 2

number (DCN) is included in parentheses at the end of the reference.

9-51

9.5 References2

1. U.S. Environmental Protection Agency, Office of Water. Economic Analysis for

the Final Effluent Limitations Guidelines for the Transportation Equipment

Cleaning Industry. EPA 821-R-00-013, June 2000.

2. U.S. Environmental Protection Agency, Office of Water. Statistical Support

Document for the Final Effluent Limitations Guidelines for the Transportation

Equipment Cleaning Industry. EPA-821-B-98-014, May 1998.

3. The Richardson Rapid System Process Plant Construction Estimating Standards. 

Volume 4: Process Equipment, 1994.

4. Eastern Research Group, Inc. Standard Annual Cost Rates Used in the TECI Cost

Model. Memorandum from Melissa Cantor, Eastern Research Group, Inc. to the

TECI Rulemaking Record, April 22, 1998 (DCN T09977).

5. Eastern Research Group, Inc. Flow Reduction Cost Module Documentation for

the Transportation Equipment Cleaning Cost Model. May 1998 (DCN T09753).

6. “Economic Indicators.” Chemical Engineering. September 1995, page 168.

7. Eastern Research Group, Inc. Contract Haul Cost Module Documentation for the

Transportation Equipment Cleaning Cost Model. May 1998 (DCN T09754).

8. Eastern Research Group, Inc. Monitoring Cost Module Documentation for the

Transportation Equipment Cleaning Cost Model. May 1998 (DCN T09852).

9. Eastern Research Group, Inc. Equalization Cost Module Documentation

Transportation Equipment Cleaning Cost Model Truck/Chemical Subcategory. 

May 1998 (DCN T09730).

10. Eastern Research Group, Inc. Oil/Water Separation Cost Module Documentation

for the Transportation Equipment Cleaning Cost Model Truck/Chemical

Subcategory (Direct Dischargers). May 1998 (DCN T09734).

11. Eastern Research Group, Inc. Oil/Water Separation Cost Module Documentation

for the Transportation Equipment Cleaning Cost Model Truck/Chemical

Subcategory (Indirect Dischargers). May 1998 (DCN T09731).
Section 9.0 - Costs of Technology Bases for Regulations

9-52

12. Eastern Research Group, Inc. Chemical Oxidation/Neutralization/Coagulation/

Clarification Cost Module Documentation for the Transportation Equipment

Cleaning Cost Model Truck/Chemical Subcategory (Direct Dischargers). May

1998 (DCN T09735).

13. Eastern Research Group, Inc. Chemical Oxidation/Neutralization/Coagulation/

Clarification Cost Module Documentation for the Transportation Equipment

Cleaning Cost Model Truck/Chemical Subcategory (Indirect Dischargers). May

1998 (DCN T09732).

14. Eastern Research Group, Inc. Sludge Dewatering Cost Module Documentation

for the Transportation Equipment Cleaning Cost Model Truck/Chemical

Subcategory (Direct Dischargers). May 1998 (DCN T09726).

15. Eastern Research Group, Inc. Sludge Dewatering Cost Module Documentation

for the Transportation Equipment Cleaning Cost Model Truck/Chemical

Subcategory (Indirect Dischargers). May 1998 (DCN T09723).

16. Eastern Research Group, Inc. Biological Treatment Cost Module Documentation

for the Transportation Equipment Cleaning Cost Model Truck/Chemical

Subcategory (Direct Dischargers). May 1998 (DCN T09736).

17. Eastern Research Group, Inc. Activated Carbon Adsorption Cost Module

Documentation for the Transportation Equipment Cleaning Cost Model

Truck/Chemical Subcategory. May 1998 (DCN T09733).

18. Eastern Research Group, Inc. Oil/Water Separation Cost Module Documentation

for the Transportation Equipment Cleaning Cost Model Rail/Chemical

Subcategory (Direct Dischargers). May 1998 (DCN T09741).

19. Eastern Research Group, Inc. Oil/Water Separation Cost Module Documentation

for the Transportation Equipment Cleaning Cost Model Rail/Chemical

Subcategory (Indirect Dischargers). May 1998 (DCN T09737).

20. Eastern Research Group, Inc. Equalization Cost Module Documentation for the

Transportation Equipment Cleaning Cost Model Rail/Chemical Subcategory. May

1998 (DCN T09738).

21. Eastern Research Group, Inc. pH Adjustment/Dissolved Air Flotation Cost

Module Documentation for the Transportation Equipment Cleaning Cost Model

Rail/Chemical Subcategory (Direct Dischargers). May 1998 (DCN T09742).
Section 9.0 - Costs of Technology Bases for Regulations

9-53

22. Eastern Research Group, Inc. pH Adjustment/Dissolved Air Flotation Cost

Module Documentation for the Transportation Equipment Cleaning Cost Model

Rail/Chemical Subcategory (Indirect Dischargers). May 1998 (DCN T09739).

23. Eastern Research Group, Inc. Sludge Dewatering Cost Module Documentation for

the Transportation Equipment Cleaning Cost Model Rail/Chemical Subcategory

(Direct Dischargers). May 1998 (DCN T09727).

24. Eastern Research Group, Inc. Sludge Dewatering Cost Module Documentation for

the Transportation Equipment Cleaning Cost Model Rail/Chemical Subcategory

(Indirect Dischargers). May 1998 (DCN T09724).

25. Eastern Research Group, Inc. Biological Treatment Cost Module Documentation

for the Transportation Equipment Cleaning Cost Model Rail/Chemical

Subcategory (Direct Dischargers). May 1998 (DCN T09743).

26. Eastern Research Group, Inc. Organo-Clay/Granular Activated Carbon Cost

Module Documentation for the Transportation Equipment Cleaning Cost Model

Rail/Chemical Subcategory. May 1998 (DCN T09740).

27. Eastern Research Group, Inc. Primary Oil/Water Separation and Dissolved Air

Flotation Cost Module Documentation for the Transportation Equipment Cleaning

Cost Model Barge/Chemical Subcategory. May 1998 (DCN T09744).

28. Eastern Research Group, Inc. Filter Press Cost Module: Sludge Dewatering

Documentation for the Transportation Equipment Cleaning Cost Model

Barge/Chemical Subcategory (Baseline). May 1998 (DCN T09851).

29. Eastern Research Group, Inc. Filter Press Cost Module: Wastewater and Sludge

Documentation for the Transportation Equipment Cleaning Cost Model

Barge/Chemical Subcategory (Indirect Dischargers). May 1998 (DCN T09725).

30. Eastern Research Group, Inc. Biological Treatment Cost Module Documentation

for the Transportation Equipment Cleaning Cost Model Barge/Chemical

Subcategory. May 1998 (DCN T09745).

31. Eastern Research Group, Inc. Reverse Osmosis Cost Module Documentation for

the Transportation Equipment Cleaning Cost Model Barge/Chemical Subcategory. 

May 1998 (DCN T09746).

32. Eastern Research Group, Inc. Equalization Cost Module Documentation for the

Transportation Equipment Cleaning Cost Model Food Subcategories. May 1998

(DCN T09748).
Section 9.0 - Costs of Technology Bases for Regulations

9-54

33. Eastern Research Group, Inc. Oil/Water Separation Cost Module Documentation

for the Transportation Equipment Cleaning Cost Model Food Subcategories. May

1998 (DCN T09749).

34. Eastern Research Group, Inc. Biological Treatment Cost Module Documentation

for the Transportation Equipment Cleaning Cost Model Food Subcategories. May

1998 (DCN T09750).

35. Eastern Research Group, Inc. Sludge Dewatering Cost Module Documentation

for the Transportation Equipment Cleaning Cost Model Food Subcategories. May

1998 (DCN T09729).

36. Eastern Research Group, Inc. Gravity Separator Cost Module Documentation for

the Transportation Equipment Cleaning Cost Model Hopper Subcategories. May

1998 (DCN T09747).

37. Eastern Research Group, Inc. TECI Cost Model Annual Cost Factors for Pumps. 

Memorandum from Melissa Cantor, Eastern Research Group, Inc. to the TECI

Rulemaking Record, October 10, 1997 (DCN T04654).

38. Eastern Research Group, Inc. TECI Cost Model Annual Cost Factors for Tanks. 

Memorandum from Melissa Cantor, Eastern Research Group, Inc. to the TECI

Rulemaking Record, March 27, 1998 (DCN T09976).

39. Eastern Research Group, Inc. TECI Cost Model Revision Documentation. June

1999 (DCN T20322).

40. Eastern Research Group, Inc. Barge/Chemical & Petroleum (Direct Dischargers)

Costing Calculation Sheets. May 1999 (DCN T20379).

41. Eastern Research Group, Inc. Costs for Filter Press Cloths. July 1998 (DCN

T20487).
Section 9.0 - Costs of Technology Bases for Regulations

9-55

Table 9-1

Number of Costed Technology Options for Each TECI Subcategory

Subcategory Technology Options NSPS Options Options

Number of Unique BPT/BCT/BAT/ PSES/PSNS

Number of Number of

Truck/Chemical & Petroleum 5 2 3

Rail/Chemical & Petroleum 6 3 3

Barge/Chemical & Petroleum 3 2 3

Food 2 2 2

Truck/Hopper 1 NA 1

Rail/Hopper 1 NA 1

Barge/Hopper 1 1 1

NA - Not Applicable
Section 9.0 - Costs of Technology Bases for Regulations

9-56

Table 9-2

Direct Capital Costs Used by the TECI Cost Model

Capital Costs

Item Cost Equation ($1994) Subcategory(ies) Technology(ies) Reference

Cleaning bays C = 65,000 - 74,928 for 1 bay (based on tank type) Truck/Chemical & Petroleum Flow Reduction (5)

C = 80,000 - 82,798 for 2 bays (based on tank type) Rail/Chemical & Petroleum

C = 150,000 - 165,596 for 4 bays (based on tank type)

Spinners and covers (2) C = 10,000 Truck/Chemical & Petroleum Flow Reduction (5)

Rail/Chemical & Petroleum

Equalization tank C = 1.002(V) + 4,159.944 Truck/Chemical & Petroleum Equalization (9, 32)

Food

Equalization tank C = 463 for V <16,667 Truck/Chemical & Petroleum Equalization (9, 32)

mixer/aerator C = 573 for V <33,333 Food

C = 804 for V $33,333

Demulsifier pump C = 1,634 Truck/Chemical & Petroleum Oil/Water Separator (10, 11)

Oil/water separator C = -0.926(GPM) + 247.9(GPM) + 6,209 Truck/Chemical & Petroleum Oil/Water Separator (10, 11)

(vertical tube coalescing)

2

Oil storage tank C = 0.874(V) + 202.45 Truck/Chemical & Petroleum Oil/Water Separator (10, 11, 27)

Barge/Chemical & Petroleum

Sludge transfer pump C = 2,102 for GPM # 2 Truck/Chemical & Petroleum Oil/Water Separator, (10, 11, 33,

C = 1,602 for GPM >2 Truck/Hopper Gravity Separation 36)

Rail/Hopper

Barge/Hopper

Food

Sludge storage tank C = 0.846(V) + 355.163 Truck/Chemical & Petroleum Oil/Water Separator (10, 11)

Chemical C = -3.885(GPM) + 1,374.588(GPM) + 49,978.01 Truck/Chemical & Petroleum Chemical Oxidation, (12, 13)

oxidation/coagulation/ Neutralization,

clarification system Coagulation,

2

Clarification
9-57

Table 9-2 (Continued)

Section 9.0 - Costs of Technology Bases for Regulations

Capital Costs

Item Cost Equation ($1994) Subcategory(ies) Technology(ies) Reference

Polyalum chloride storage C = 6,698 Truck/Chemical & Petroleum Chemical Oxidation, (12, 13)

tank Neutralization,

Coagulation,

Clarification

Plate-and-frame filter press C = -6.244(FCV) + 1,527.685(FCV) + 10,379.655 Truck/Chemical & Petroleum Filter Press, (14, 15, 23, 2

Rail/Chemical & Petroleum Sludge Dewatering 24, 28, 29,

Barge/Chemical & Petroleum 35)

Food

Dewatered sludge profile C = 487 Truck/Chemical & Petroleum Sludge Dewatering, (7)

fee and roll-off box drop-off Rail/Chemical & Petroleum Filter Press

fee Barge/Chemical & Petroleum

Food

Un-dewatered sludge C = 200 Truck/Chemical & Petroleum Oil/Water Separation, (7)

profile fee Rail/Chemical & Petroleum Dissolved Air

Barge/Chemical & Petroleum Flotation,

Food Chemical Oxidation,

Truck/Hopper Neutralization,

Rail/Hopper Coagulation,

Barge/Hopper Clarification

Biological Treatment,

Gravity Separation

Wastewater pumps (for C = -0.11(GPM) + 31.706(GPM) + 562.079 Truck/Chemical & Petroleum Activated Carbon (17)

carbon adsorption system) Adsorption

2

Activated carbon C = 12.237(ACV) Truck/Chemical & Petroleum Activated Carbon (17)

adsorption vessels (2 Adsorption

vessels)

1.026

Bag filters C = 649.69 Truck/Chemical & Petroleum Activated Carbon (39)

Adsorption

Backwash tank C = 0.9047(V) + 328.65 Truck/Chemical & Petroleum Activated Carbon (39)

Adsorption
9-58

Table 9-2 (Continued)

Section 9.0 - Costs of Technology Bases for Regulations

Capital Costs

Item Cost Equation ($1994) Subcategory(ies) Technology(ies) Reference

Wastewater transfer pump C = 0.0124(GPM) - 0.985(GPM) + 23.352(GPM) + Rail/Chemical & Petroleum Oil/Water Separation, (18, 19, 21, 3 2

847.032 Barge/Chemical & Petroleum pH Adjustment, 22, 26, 36)

Truck/Hopper Gravity Separation,

Rail/Hopper OrganoBarge/Hopper Clay/Activated

Carbon Adsorption

Oil transfer pump C = 0.0124(GPM) - 0.985(GPM) + 23.352(GPM) + Rail/Chemical & Petroleum Oil/Water Separation (18, 19, 27) 3 2

847.032 Barge/Chemical & Petroleum

Oil/water separator (API) C = -0.312(GPM) + 277.123(GPM) + 38,266.407 Rail/Chemical & Petroleum Oil/Water Separation (18, 19) 2

Oil storage tank C = 1.949(V) + 573.468 for V>185 gallons Rail/Chemical & Petroleum Oil/Water Separation (18, 19)

C = 970 for V#185 gallons

Sludge storage tank C = 2.668(V) + 154.792 for V>55 gallons Rail/Chemical & Petroleum Oil/Water Separation (18, 19)

C = 193 for V#55 gallons

Equalization tank C = -0.000017(V) + 1.185(V) + 673.73 Rail/Chemical & Petroleum Equalization (20) 2

Equalization tank agitator C = 2827.932LOG (HP) + 4,604.077 Rail/Chemical & Petroleum Equalization (20) 10

Chemical addition tank and C = 4.27(V) + 684.194 Rail/Chemical & Petroleum pH Adjustment, (21, 22)

polymer mixing tank DAF

Chemical addition tank C = 1.162(V) + 622.232 Rail/Chemical & Petroleum pH Adjustment (21, 22)

mixer

pH probe C = 1,177.70 Rail/Chemical & Petroleum pH Adjustment (21, 22)

Acid addition pump C = 316.8 Rail/Chemical & Petroleum pH Adjustment (21, 22)

Caustic addition pump C = 316.8 for V #450 gallons Rail/Chemical & Petroleum pH Adjustment (21, 22)

C = 371.8 for V >450 gallons

Polymer mixing tank mixer C = 1.071(V) + 610.915 Rail/Chemical & Petroleum DAF (21, 22)

Polymer pump C = 697.2 for polymers 7622 and 7181 Rail/Chemical & Petroleum DAF (21, 22, 39)

C = 686 for polymer 7032 Barge/Chemical & Petroleum Polymer-Assisted

Coagulation

Polymer dilution tank C = 0.00038(V) - 0.18828(V) + 32.308(V) - 554.286 Rail/Chemical & Petroleum DAF (21, 22) 3 2

Polymer dilution tank mixer C = 3.38(V) + 566.510 Rail/Chemical & Petroleum DAF (21, 22)
9-59

Table 9-2 (Continued)

Section 9.0 - Costs of Technology Bases for Regulations

Capital Costs

Item Cost Equation ($1994) Subcategory(ies) Technology(ies) Reference

DAF unit C = -1.357(GPM) + 291.471(GPM) + 68,163.591 Rail/Chemical & Petroleum DAF (21, 22) 2

DAF compressor C = 245.317(HP) + 1,998.279 Rail/Chemical & Petroleum DAF (21, 22)

Sludge storage tank C = 2.587(V) + 159.528 Rail/Chemical & Petroleum DAF (21, 22)

Pre-engineered building C = 19,450.08 Rail/Chemical & Petroleum DAF (21, 22)

Sludge transfer pump C = -22.288(HP) + 327.219(HP) + 1,827.999 Rail/Chemical & Petroleum Oil/Water Separation, (18, 23, 24) 2

Sludge Dewatering

Sludge storage tank C = 15,678.49LOG (V) - 40,333.095 Rail/Chemical & Petroleum Sludge Dewatering (24) 10

Organo-clay/activated C = 2.922(FMC) + 169.642(FMC) + 3,825.433 Rail/Chemical & Petroleum Organo- (26)

carbon vessels Clay/Granular

2

Activated Carbon 

Oil/water separator(gravity C = 0.234(V) + 16,153 Barge/Chemical & Petroleum Oil/Water Separation (27)

separation)

Oil/water separator effluent C = 1,928.46 for GPM<2 Truck/Chemical & Petroleum Oil/Water Separator, (14, 23, 27,

pump, precoat pump, and C = 2,015.98 for GPM<4 Rail/Chemical & Petroleum Filter Press, 28, 29, 35)

filter press influent pump C = 2,226.1 for GPM<7.5 Barge/Chemical & Petroleum Sludge Dewatering

C = 3,371.21 for GPM<15 Food

C = 4,784.05 for GPM<30

C = 6,696.73 for GPM$30

DAF unit C = 46,000 for GPM<53 Barge/Chemical & Petroleum DAF (27)

C = 68,500 for GPM$53

Sludge storage tank C = 0.917(V) + 322.7 Barge/Chemical & Petroleum DAF (27)

Filter press wastewater C = 0.526(V) + 3,246.142 Barge/Chemical & Petroleum Filter Press (29)

effluent storage tank

Precoat storage tank C = 4,160 for FPV <10 Truck/Chemical & Petroleum Filter Press, (14, 23, 28,

C = 4,544 for FPV <30 Rail/Chemical & Petroleum Sludge Dewatering 29, 35)

C = 5,078 for FPV <50 Barge/Chemical & Petroleum

C = 6,980 FPV <100 Food

C = 10,284 for FPV $100
9-60

Table 9-2 (Continued)

Section 9.0 - Costs of Technology Bases for Regulations

Capital Costs

Item Cost Equation ($1994) Subcategory(ies) Technology(ies) Reference

Wastewater transfer C = 0.0015(GPM) - 0.2463(GPM) + 11.6758(GPM) Truck/Chemical & Petroleum Oil/Water Separation, (16, 25, 30,

pump/oil transfer pump + 847.0323 Rail/Chemical & Petroleum Biological Treatment 33, 34)

(operating at maximum Barge/Chemical & Petroleum

capacity) Food

3 2

Preaeration tank C = 0.578(V) + 2,142.109 Truck/Chemical & Petroleum Biological Treatment (16, 25, 30,

Rail/Chemical & Petroleum 34)

Barge/Chemical & Petroleum

Food

Diffusers/blowers C = 23.443(FT3M) + 787.24 Truck/Chemical & Petroleum Biological Treatment (16, 25, 30,

Rail/Chemical & Petroleum 34)

Barge/Chemical & Petroleum

Food

Biological reactor tank C = -0.371(V/1,000) + 475.133(V/1,000) + Truck/Chemical & Petroleum Biological Treatment (16, 25, 30, 2

2,3000.696 Rail/Chemical & Petroleum 34)

Barge/Chemical & Petroleum

Food

Clarifier C = 0.331(GPM) + 143.329(GPM) + 21,838.385 Truck/Chemical & Petroleum Biological Treatment (16, 25, 30, 2

Rail/Chemical & Petroleum 34)

Barge/Chemical & Petroleum

Food

Biological treatment C = 1,036 Barge/Chemical & Petroleum Biological Treatment (40)

optimization labor

Sludge storage and reverse C = 0.733(V) + 12,170.856 Truck/Chemical & Petroleum Biological Treatment, (16, 25, 30,

osmosis storage tank Rail/Chemical & Petroleum Reverse Osmosis 31, 34)

Barge/Chemical & Petroleum

Food

Sludge transfer pump C = 209.82(HP) + 1,888.2 Truck/Chemical & Petroleum Biological Treatment, (16, 25, 30,

Rail/Chemical & Petroleum Sludge Dewatering 34, 35)

Barge/Chemical & Petroleum

Food
9-61

Table 9-2 (Continued)

Section 9.0 - Costs of Technology Bases for Regulations

Capital Costs

Item Cost Equation ($1994) Subcategory(ies) Technology(ies) Reference

Wastewater pump (effluent C = 3.383(HP) + 64.263(HP) + 1,024.711 Truck/Chemical & Petroleum Biological Treatment (16, 25, 30,

from biological treatment) Rail/Chemical & Petroleum 34)

2

Barge/Chemical & Petroleum

Food

Flooded suction tank C = -0.0003(V) + 2.9356(V) + 118.68 for V$55 Barge/Chemical & Petroleum Reverse Osmosis (31) 2

C = 193 for V<55

Reverse osmosis unit C = -13.578(GPM) + 2,600.9(GPM) + 4,773.9 Barge/Chemical & Petroleum Reverse Osmosis (31) 2

Gravity separator C = -0.00002(V) + 1.165(V) + 4748.36 for V<21,808 Truck/Hopper Oil/Water Separator, (33, 36) 2

C = 0.00000006(V) + 0.2849(V) + 10,738 for Rail/Hopper Gravity Separation 2

V$21,808 Barge/Hopper 

Food

ACV - Activated carbon vessel volume (cubic feet).

API - American Petroleum Institute.

C - Direct capital equipment costs ($1994).

DAF - Dissolved Air Flotation.

FCV - Filter cake volume (cubic feet per day).

FMC - Filter media vessel volume (cubic feet).

FT3M - Flow rate (cubic feet per minute).

GPM - Flow rate (gallons per minute).

HP - Motor horsepower (hp).

FPV - Filter press volume (cubic feet).

V - Tank volume (gallons).
Section 9.0 - Costs of Technology Bases for Regulations

9-62

Table 9-3

Components of Total Capital Investment

Item Component Cost

1 Equipment capital costs (including required Direct Capital Cost

accessories), installation, delivery, electrical and

instrumentation, enclosure, and pumping

2 Piping 10% of item 1

3 Secondary containment/land costs 10% of item 1

4 Excavation and site work 3.5% of item 6

5 Indirect costs including: engineering and 30% of item 6

supervision, construction expenses, contractor’s

fee, and contingency

6 Direct + Indirect Costs Sum of items 1 through 5 =

1.80 × Direct Capital Cost

7 Start-up costs $207.2

8 Total Capital Investment Sum of items 6 and 7 =

(1.80 x Direct Capital Cost) + 207.2

Source: Reference (39).
Section 9.0 - Costs of Technology Bases for Regulations

9-63

Table 9-4

Operation and Maintenance Unit Costs Used by the TECI Cost Model

Item Cost Equation ($1994) Technology Reference

Cost ($1994)/ Practice/

Activity

Contract hauling of bulk $0.44/gallon Contract Haul (7)

wastewater

Disposal of waste oil (95% oil, $0.37/gallon Contract Haul (7)

5% water)

Nonhazardous dewatered sludge $141.01/yd + $4,176/yr for Contract Haul (7)

disposal roll-off box rental

3

Nonhazardous undewatered $0.53-$3.58/gallon Contract Haul (7)

sludge disposal (based on volume)

Laboratory fee for volatile $459/analysis Compliance Monitoring (8)

organic compounds

Laboratory fee for semivolatile $350/analysis Compliance Monitoring (39)

organic compounds

Laboratory fee for metals $598/analysis Compliance Monitoring (8)

Laboratory fee for HEM $35/analysis Compliance Monitoring (8)

Laboratory fee for SGT-HEM $56.67/analysis Compliance Monitoring (39)

Laboratory fee for BOD $16/analysis Compliance Monitoring (8) 5

Laboratory fee for COD $20/analysis Compliance Monitoring (8)

Laboratory fee for TSS $6/analysis Compliance Monitoring (40)

Chemicals

Activated carbon (annual media A = 0.00112(ACV) + Activated Carbon Adsorption (17)

change-out and regeneration) 11.663(ACV) + 11058.543

2

Biological treatment microbes $2.84/lb Biological Treatment (16, 25, 30,

34)

Demulsifier $33.36/gallon Oil/Water Separator (10, 11)

Diatomaceous earth $0.76/lb Filter Press, Sludge (14, 23, 28,

Dewatering 29, 35)

Organo-clay/activated carbon A = -1.785(FMV) + Organo-Clay/Activated (25)

adsorption (annual media 946.009(FMV) - 450.496 Carbon Adsorption

change-out)

2

Organo-clay/activated carbon A = 161.429(FMV) + 8464.083 Organo-Clay/Activated (26)

disposal (organo-clay Carbon Adsorption

incineration and activated

carbon regeneration)

Hydrogen peroxide $0.45-$0.69/lb Chemical Oxidation, (12, 13)

Neutralization, Coagulation,

Clarification
Table 9-4 (Continued)

Section 9.0 - Costs of Technology Bases for Regulations

Item Cost Equation ($1994) Technology Reference

Cost ($1994)/ Practice/

9-64

Magnesium hydroxide $0.26-$0.36/lb Chemical Oxidation, (12, 13)

Neutralization, Coagulation,

Clarification

Polyalum chloride $2.53-$4.28/gallon Chemical Oxidation, (12, 13)

Neutralization, Coagulation,

Clarification

Polymer $2.44-$3.00/lb Chemical Oxidation, (12, 13,

Neutralization, Coagulation, 40)

Clarification, Biological

Treatment

Polymer 7032 $1.10/lb DAF (21, 22)

Polymer 7181 $4.45/lb DAF (21, 22)

Polymer 7622 $1.25/lb DAF (21, 22)

Sodium hydroxide (50%) $1.689/gallon pH Adjustment (21, 22)

Sulfuric acid (93%) $0.095-$0.28/lb Chemical Oxidation, (12, 13, 21,

$1.091/gallon Neutralization, Coagulation, 22)

Clarification, and

pH Adjustment

Labor Costs

Flow reduction training A = (FPT-REG)(0.5)(25.9) for Flow Reduction (5)

truck tank type 

A=(FPT-REG)(0.5)(25.9)/(1.7)

for rail tank type

Pump operational labor A = (0.05)(DPY)(25.9) All (37)

Pump maintenance labor A = (0.005)(DPY)(HPD)(25.9) All (37)

Oil/water separator (vertical A = (0.05)(DPY)(25.9) Oil/Water Separator (10, 11)

tube coalescing) operational

labor

Oil/water separator (vertical A = (0.005)(HPD)(DPY)(25.9) Oil/Water Separator (10, 11)

tube coalescing) maintenance + ((48)(25.9))

labor

Tanks with mixers maintenance A = 103.6 -207.2 Equalization, (9, 14, 20,

labor (based on tank volume) pH Adjustment, 21, 22, 23,

Filter Press, 28, 29, 30,

DAF, 32, 35, 38)

Biological Treatment,

Sludge Dewatering

Tanks without mixers A = 414.4 - 828.8 All (38)

maintenance labor (based on tank volume)

Tank(all) repair labor A = (0.01)(C) All (38)
Table 9-4 (Continued)

Section 9.0 - Costs of Technology Bases for Regulations

Item Cost Equation ($1994) Technology Reference

Cost ($1994)/ Practice/

9-65

Filter press operational labor A = (BPY)(12.95) - Filter Press, (14, 15, 23,

(BPY)(25.9) Sludge Dewatering 24, 28, 29,

(based on filter press volume) 35)

DAF operational labor A = (1)(DPY)(25.9) - DAF (21, 22,

(2)(DPY)(25.9) 27)

(based on chemical addition)

DAF maintenance and repair A = (0.01)(C) - (0.02)(C) DAF (21, 22,

labor (based on chemical addition) 27)

Chemical oxidation, A = (HPD)(DPY)(25.9) Chemical Oxidation, (12, 13)

neutralization, coagulation, Neutralization, Coagulation,

clarification operational labor Clarification

Chemical oxidation, A = (32)(25.9) Chemical Oxidation, (12, 13)

neutralization, coagulation, Neutralization, Coagulation,

clarification maintenance and Clarification

repair labor

Activated carbon unit repair A = (0.01)(C) Activated Carbon Adsorption (17)

labor

Activated carbon operational A = (0.5)(DPY)(25.9) + 1,295 Activated Carbon Adsorption (39)

labor

Bag filter operational labor A = (0.5)(DPY)(25.9) Activated Carbon Adsorption (39)

Bag filter maintenance and A = (0.01)(C) Activated Carbon Adsorption (39)

repair labor

pH probe maintenance and A = (2)(0.01)(C) pH Adjustment (21, 22)

repair labor

Organo-clay/granular activated A = (0.01)(C) Organo-Clay/Activated (25)

carbon unit repair labor Carbon Adsorption

Reverse osmosis operational A = (DPY)(25.9) Reverse Osmosis (31)

labor

Reverse osmosis maintenance A = 414.4 Reverse Osmosis (31)

labor

Oil/water separation (API) A = 414.4 Oil/Water Separation (18, 19)

maintenance labor

Material and Replacement Costs

Pump materials A = (0.01)(C) All (37)

Chemical oxidation/ A = (0.01)(C) Chemical Oxidation, (12, 13)

neutralization/coagulation/ Neutralization, Coagulation,

clarification materials Clarification

Demulsifier pump materials A = 15 Oil/Water Separation (10, 11)

Oil/water separator (vertical A = 8-25 Oil/Water Separation (10, 11)

tube coalescing) materials (based on wastewater flow)

Bag filters A = (2.30)(DPY) Activated Carbon Adsorption (39)
Table 9-4 (Continued)

Section 9.0 - Costs of Technology Bases for Regulations

Item Cost Equation ($1994) Technology Reference

Cost ($1994)/ Practice/

9-66

Filter press cloths A = 245-8,100 Filter Press (41)

(based on filter press volume) Sludge Dewatering

Filter press materials A = (0.01)(C) Filter Press (14, 15, 23,

Sludge Dewatering 24, 28, 29,

35)

DAF (with chemical addition) A = (0.01)(C) DAF (21, 22)

materials

Annual costs for a building A = (0.035)(C) DAF (21, 22)

pH probe materials A = 185/0.75 pH Adjustment (21, 22)

Filter press precoat storage tank A = (0.01)(C) Filter Press, (14, 23, 28,

materials Sludge Dewatering 29, 35)

Reverse osmosis membrane A = -1.409(GPM) + Reverse Osmosis (31)

replacement 142.64(GPM) + 707.27

2

General Costs

Electricity usage fee $0.047/ kilowatt-hour All (4)

O&M labor rate $25.90/hour All (3)

Water usage fee $2.98/1,000 gal of water Flow Reduction (5)

A - Annual costs ($1994/year).

ACV - Activated carbon vessel volume (cubic feet).

BPY - Filter press batches per year.

C - Direct capital equipment costs ($1994).

DPY - Operating days per year.

DAF - Dissolved Air Flotation.

FMV - Filter media vessel volume (cubic feet).

FPT - Flow per tank (gallons).

GPM - Flow rate (gallons per minute).

HPD - Operating hours per day.

REG - Subcategory median flow per tank (gallons).
Section 9.0 - Costs of Technology Bases for Regulations

9-67

Table 9-5

Target Wastewater Flow by Facility Type

Facility Type (gallons/tank)

Target Flow

Truck/Chemical & Petroleum 605

Rail/Chemical & Petroleum 2,091

Truck/Food 790

Rail/Food 4,500

Barge/Food 4,500

Truck/Hopper 144

Rail/Hopper 267

Barge/Hopper 712

Source: Reference (2).
Section 9.0 - Costs of Technology Bases for Regulations

9-68

Table 9-6

Cost Summary of Regulatory Options for BPT/BAT/BCT (a)

Subcategory Option (Thousand $1994) (Thousand $/yr (in $1994))

Capital Cost O&M Cost

Barge/Chemical & Petroleum 1 $85 $126

Barge/Chemical & Petroleum 2 $1,800 $316

Rail/Chemical & Petroleum 1 $0 $7

Rail/Chemical & Petroleum 2 $184 $35

Rail/Chemical & Petroleum 3 $199 $61

Truck/Chemical & Petroleum 1 $77 $(28)

Truck/Chemical & Petroleum 2 $77 $(28)

Food (b) 1 $0 $0

Food (b) 2 $0 $0

Barge/Hopper (c) 1 $160 $480

Source: Output from the Transportation Equipment Cleaning Industry Design and Cost Model.

(a) Costs are based on monthly monitoring for regulated toxic pollutants and weekly monitoring for regulated

conventional pollutants.

(b) All direct dischargers in these subcategories currently operate oil/water separation, equalization, and biological

treatment and are expected to meet the pollutant discharge long-term averages without incurring any additional capital or

annual costs.

(c) Costs are based on only monthly monitoring for all pollutants.
Section 9.0 - Costs of Technology Bases for Regulations

9-69

Table 9-7

Cost Summary of Regulatory Options for PSES (a)

Subcategory Option (Thousand $1994) (Thousand $/yr (in $1994))

Capital Cost O&M Cost

Barge/Chemical & Petroleum 1 $0 $61

Barge/Chemical & Petroleum 2 $0 $61

Barge/Chemical & Petroleum 3 $430 (b) $220 (b)

Rail/Chemical & Petroleum 1 $3,190 $496

Rail/Chemical & Petroleum 2 $7,040 $659

Rail/Chemical & Petroleum 3 $7,540 $1,500

Truck/Chemical & Petroleum A $19,300 $5,480

Truck/Chemical & Petroleum 1 $51,400 $8,030

Truck/Chemical & Petroleum 2 $65,400 $23,600

Food 1 $18,100 (c) $30.6 (c)

Food 2 $96,400 (c) $61.6 (c)

Barge/Hopper 1 $0 (c) $26 (c)

Rail/Hopper 1 $0 (c) $28 (c)

Truck/Hopper 1 $310 (c) $390 (c)

Source: Output from the Transportation Equipment Cleaning Design and Cost Model.

(a) Costs are based on monthly monitoring of all regulated pollutants.

(b) Costs are based on one facility; however, since proposal, EPA has identified four facilities that previously discharged

directly to surface waters and have since either switched or plan to switch discharge status. EPA did not consider

Option 3 for PSES or PSNS at proposal; therefore, EPA did not revise compliance costs for this option for the final rule.

(c) EPA did not consider these options for PSES or PSNS at proposal; therefore, EPA did not revise compliance costs

for these options for the final rule.
Section 10.0 - Pollutant Reduction Estimates

10-1

10.0 POLLUTANT REDUCTION ESTIMATES

This section describes EPA’s estimates of industry pollutant loadings and pollutant

reductions for each of the Transportation Equipment Cleaning Industry (TECI) technology

options described in Section 8.0. The Agency estimated pollutant loadings and pollutant

reductions at TEC facilities in order to evaluate the impact of pollutant loadings currently released

to surface waters and publicly-owned treatment works (POTWs), to evaluate the impact of

pollutant loadings released to surface waters and POTWs following implementation of each TECI 

regulatory option, and to assess the cost-effectiveness of each TECI regulatory option in

achieving these pollutant loading reductions. Untreated, baseline, and post-compliance pollutant

loadings and pollutant reductions were estimated for pollutants of interest that were treated by the

technology bases. The selection of pollutants included in the load removal estimates is discussed

below. Untreated, baseline, and post-compliance pollutant loadings are defined as follows: 

C Untreated loadings - pollutant loadings in raw transportation equipment

cleaning (TEC) wastewater. These loadings represent pollutant loadings

generated by the TECI, and do not account for wastewater treatment

currently in place at TEC facilities.

C Baseline loadings - pollutant loadings in TEC wastewater currently being

discharged to POTWs or U.S. surface waters. These loadings account for

wastewater treatment currently in place at TEC facilities.

C Post-compliance loadings - pollutant loadings in TEC wastewater that

would be discharged following implementation of each regulatory option. 

These loadings are calculated assuming that all TEC facilities would

operate wastewater treatment technologies equivalent to the technology

bases for the regulatory options evaluated.

The following information is presented in this remainder of this chapter:

C Section 10.1 presents the methodology used to identify pollutants included

in the load removal estimates;
Section 10.0 - Pollutant Reduction Estimates

10-2

C Section 10.2 presents the general methodology used to calculate TECI

pollutant loadings and pollutant reductions;

C Section 10.3 presents the general methodology used to estimate untreated

pollutant loadings in TEC wastewaters; 

C Section 10.4 presents the methodology used to estimate untreated

production normalized pollutant loadings (PNPLs) in TEC wastewaters for

multiple subcategory facilities;

C Section 10.5 presents the estimated untreated pollutant loadings for the

TECI;

C Section 10.6 presents the estimated baseline pollutant loadings for the

TECI;

C Section 10.7 presents the estimated post-compliance pollutant loadings for

the TECI;

C Section 10.8 presents the estimated pollutant loading reductions achieved

by the TECI following implementation of each regulatory option; and

C Section 10.9 presents references for this section.

EPA has not directly evaluated pollutant removals for the pollution prevention alternative. EPA

believes that pollutant reductions would be equivalent to or exceed the load removals from EPA’s

regulatory options.

10.1 Methodology Used to Identify Pollutants Included in the Load Removal

Estimates

After determining pollutants of interest for each subcategory (discussed in Section

6.6), EPA selected treatment technologies and composed technology options that control the

pollutants of interest for each subcategory. Next, EPA gathered influent and effluent sampling

data to characterize treatment performance for the options. EPA evaluated the sampling data and

determined if a pollutant of interest was treated by one or more of the wastewater treatment

technology options evaluated for each subcategory and discharge type (i.e., indirect or direct) by

analyzing the percent reduction achieved by the technology option. (The technology options
Section 10.0 - Pollutant Reduction Estimates

10-3

considered for each subcategory are discussed in Section 8.0.) EPA included all pollutants of

interest in the load removal estimates that had a removal efficiency greater than 0% by at least one

technology option considered by the Agency. The criterion was applied to the base technology

option and to each incremental technology option individually. This criterion insures that EPA

does not select for regulation pollutants that are not removed or controlled by the technology

options considered by the Agency. 

If a given pollutant of interest met this criterion, treatment effectiveness

concentrations and/or percent removal efficiencies were also calculated. Additional information

on identifying pollutants included in the load removal estimates and their corresponding removal

rates for each TECI subcategory can be found in reference 1 and reference 2.

10.2 General Methodology Used to Calculate Pollutant Loadings and Pollutant

Reductions

In general, pollutant loadings and pollutant reductions were calculated for the

TECI using the following methodology: 

1. Field sampling data were analyzed to determine pollutant concentrations in

untreated TEC wastewaters.

2. These concentrations were converted to untreated PNPLs for each TECI

subcategory using the sampled facility production data (i.e., the number of

tanks cleaned), wastewater flow rates, and operating data.

3. Untreated PNPLs were used in the TECI cost model (see Section 9.0) to

estimate the loading of each pollutant in each model facility untreated TEC

wastewater stream.

4. Model facility daily untreated pollutant loadings were converted to

untreated influent concentrations using facility flow data and a conversion

factor.

5. Model facility untreated pollutant loadings and statistically generated

weighting factors were used to calculate untreated wastewater pollutant

loadings for the TECI and each TECI subcategory.
Section 10.0 - Pollutant Reduction Estimates

10-4

6. For each pollutant of interest (see Section 6.6), pollutant removal

efficiencies achieved by the treatment technologies that comprise each

TECI regulatory option were developed using analytical data collected

during EPA’s TECI sampling program.

7. Treated effluent concentrations, or treatment effectiveness concentrations,

that are achieved by treatment technologies that comprise each TECI

regulatory option were developed using analytical data collected during

EPA’s TECI sampling program.

8. The TECI cost model calculated the pollutant loadings and pollutant

loading reductions achieved at baseline. For facilities that have existing

treatment, the cost model compared the untreated TEC wastewater influent

concentrations to the treatment effectiveness concentrations and percent

removal efficiency achieved by existing treatment, and determined the

pollutant reductions achieved by the existing treatment.

9. The baseline pollutant concentrations were converted to baseline pollutant

loadings using facility flow rates and a conversion factor.

10. TECI and TECI subcategory baseline pollutant loadings were calculated

for each regulatory option using the model facility baseline pollutant

loadings and statistically generated weighting factors.

11. The TECI cost model calculated the post-compliance pollutant loadings

and pollutant reductions achieved by each regulatory option. As discussed

in Section 8.0, each TECI regulatory option is comprised of a set of

pollutant control technologies. For each facility and for each treatment

unit, the cost model compared the pollutant concentrations in the

wastewater influent to the treatment effectiveness concentration and/or the

pollutant percent removal efficiency achieved by the treatment unit, and

then determined the pollutant reductions achieved. 

12. The post-compliance pollutant concentrations were converted to postcompliance pollutant loadings using facility flow rates and a conversion

factor.

13. TECI and TECI subcategory post-compliance pollutant loadings were

calculated for each regulatory option using the model facility postcompliance pollutant loadings and statistically generated weighting factors.

14. For each model facility, the pollutant reductions achieved by each

regulatory option were calculated by subtracting the post-compliance

pollutant loadings from the baseline pollutant loadings.
Section 10.0 - Pollutant Reduction Estimates

10-5

15. TECI and TECI subcategory pollutant reductions achieved by each

regulatory option were calculated using the model facility pollutant

reductions and statistically generated weighting factors.

10.3 General Methodology Used to Estimate Untreated Pollutant Loadings

The Agency used analytical data collected during EPA’s TECI sampling program

to calculate untreated PNPLs for pollutants of interest that were removed by the regulatory

options evaluated for each TECI subcategory. The following table lists the number of untreated

wastewater characterization samples collected and analyzed for each TECI subcategory:

Subcategory Characterization Samples Collected Sampled

Number of Untreated Wastewater Number of Facilities

Truck/Chemical & Petroleum 10 5

Rail/Chemical & Petroleum 5 2

Barge/Chemical & Petroleum 10 3

Food 7 3

Truck/Hopper 0 0

Rail/Hopper 0 0

Barge/Hopper 1 1

Note that although some analytical data were available from facility responses to

the Detailed Questionnaire, these data were not useable for one or more of the following reasons: 

(1) the data provided represented samples collected at a variety of treatment system

influent/effluent points that may not correspond to the technology options considered as the bases

for regulation; (2) the data provided were an average estimated by the facility over one or more

sampling days, rather than individual analytical results as required for statistical analyses; and

(3) analytical quality assurance/quality control (QA/QC) data were not provided, prohibiting an

assessment of the data quality. No untreated wastewater characterization data were submitted in

comments on the proposed rule and notice of availability.
L

C cf F

T

i

i

=

× ×

Section 10.0 - Pollutant Reduction Estimates

10-6

For each facility sampled, data on facility production (i.e., number of tanks cleaned

per day), cargo types cleaned, TEC wastewater flow rate, operating hours per day, and operating

days per year were collected. These data were used in conjunction with the untreated wastewater

analytical data to calculate PNPLs for each subcategory using the methodology described below. 

EPA first calculated PNPLs for each untreated wastewater sample collected at

each facility using the following equation:

(1)

where:

i = Pollutant i in waste stream

L = Pollutant loading generated per tank cleaned (milligram/tank or i

microgram/tank, depending on the pollutant)

Ci = Pollutant concentration in TEC wastewater characterization sample

(milligram/liter or microgram/liter, depending on the pollutant)

cf = Conversion factor (liters per gallon)

F = Daily flow rate (gallons/day); gallons per year calculated by

multiplying the flow in gallons per day by the number of operating

days per year

T = Number of tanks cleaned per day; the number of tanks cleaned per

year was calculated by multiplying the number of tanks cleaned per

day by the number of operating days per year

Certain pollutants were not detected above the sample detection limits in some

wastewater samples. Because both nondetect and detect results represent the variability of

pollutant concentrations in TEC wastewater, both results were included in calculating PNPLs. 

For nondetect results, EPA assumed the pollutant concentration was equal to the sample

detection limit for that pollutant. EPA based this assumption on the expectation that the pollutant

was present in TEC wastewater, albeit at a concentration less than the sample detection limit.
DL

N

i

j Sample 1

N

=

=

∑Li,j

FL

N

i

j Day 1

Day N

=

=

∑ Li,j

 (or DLi,j)

Section 10.0 - Pollutant Reduction Estimates

10-7

If duplicate samples or multiple grab samples (e.g., for HEM and SGT-HEM

analyses) of untreated wastewater were collected at a facility, EPA calculated the daily average

PNPL for each pollutant at that facility using the following equation:

(2)

where:

DLi = Daily average pollutant loading generated per tank cleaned

(milligram/tank or microgram/tank, depending on the pollutant)

i = Pollutant i in waste stream

Li,j = Pollutant loading generated per tank cleaned for sample

(milligram/tank or microgram/tank, depending on the pollutant)

j = Counter for number of duplicate or grab samples collected

N = Number of duplicate or grab samples collected

In cases where EPA collected samples from the same sampling point at the same

facility over multiple sampling days, EPA calculated a facility average PNPL using the following

equation:

(3)

where:

FLi = Facility-specific average pollutant loading generated per tank

cleaned (milligram/tank or microgram/tank, depending on the

pollutant)

i = Pollutant i in waste stream

L = Pollutant loading generated per tank cleaned on Day j i,j

(milligram/tank or microgram/tank, depending on the pollutant)
PNPL

N

i

j Facility 1

=

=

∑ FLi,j

Facility N

Section 10.0 - Pollutant Reduction Estimates

10-8

DL = Daily average pollutant loading generated per tank cleaned on Day j i,j

(milligram/tank or microgram/tank, depending on the pollutant)

j = Counter for number of days of sampling at a specific facility

N = Number of sampling days at a specific facility

Finally, EPA calculated subcategory PNPLs by averaging the applicable average

facility-specific PNPLs as shown in the equation below. This methodology ensured that pollutant

data from each sampled facility were weighted equally in calculating the subcategory PNPLs,

regardless of the number of wastewater samples collected at each facility.

(4)

where:

PNPLi = Subcategory average production normalized pollutant loading

generated per tank cleaned (milligram/tank or microgram/tank,

depending on the pollutant)

i = Pollutant i in waste stream

FLi,j = Facility-specific average pollutant loading generated per tank

cleaned (milligram/tank or microgram/tank, depending on the

pollutant)

j = Counter for number of facilities sampled for a specific subcategory

N = Number of facilities sampled for a specific subcategory

Additional information on the calculation of untreated PNPLs for each TECI

subcategory can be found in reference 3.
Section 10.0 - Pollutant Reduction Estimates

10-9

10.4 Multiple Subcategory Facility PNPLs

Some modeled facilities have production in more than one subcategory. For

example, a facility that cleans both tank trucks and rail tank cars that last transported chemical

cargos has production in both the Truck/Chemical & Petroleum and the Rail/Chemical &

Petroleum Subcategories. To simplify compliance cost and pollutant reduction estimates, EPA

assigned each multiple subcategory facility to a single primary subcategory. As a result of this

simplification, EPA modeled control of all TEC wastewater generated by multiple subcategory

facilities using the technology options evaluated for the facility’s primary subcategory (rather than

segregating and treating the waste streams in separate wastewater treatment systems). EPA

accounted for untreated TEC wastewater pollutant loadings from other secondary subcategories

by using the PNPLs from secondary subcategory wastewater for those pollutants that were also

pollutants of interest for the primary subcategory. Estimation of pollutant reductions for multiple

subcategory facilities is described in greater detail in the rulemaking record.

10.5 TECI Untreated Pollutant Loadings

TECI untreated pollutant loadings represent the industry pollutant loadings before

accounting for pollutant removal by treatment technologies already in place at TEC facilities. The

Agency estimated untreated pollutant loadings generated by model facilities using the untreated

PNPLs developed for each stream type (i.e., PNPLs for tank trucks cleaned at Truck/Chemical &

Petroleum Subcategory facilities, etc.) and the number of tanks cleaned per year at each model

facility.

The model facility untreated wastewater pollutant loadings were then weighted

using statistically derived weighting factors for each model facility. The weighted model facility

loadings were then summed to estimate untreated pollutant loadings for each subcategory and the

entire TECI. Tables 10-1 through 10-10 present total industry untreated pollutant loadings by

pollutant and discharge status for each subcategory. 
Section 10.0 - Pollutant Reduction Estimates

10-10

10.6 TECI Baseline Pollutant Loadings

TECI baseline loadings represent the pollutant loadings currently discharged by

TEC facilities to U.S. surface waters or to POTWs after accounting for removal of pollutants by

existing on-site treatment. Section 9.2.5 describes the assessment of the treatment in place at

each model TEC facility. The model facility baseline pollutant loadings were calculated as the

difference between the model facility untreated wastewater pollutant loadings calculated as

described in Section 10.5 and the pollutant reductions achieved by treatment in place at each

TECI model facility. 

The model facility baseline pollutant loadings were then weighted using the

statistically derived weighting factors for each model facility. The weighted model facility

baseline loadings were then summed to estimate the baseline pollutant loadings for the entire

TECI. Tables 10-1 through 10-10 present the total industry baseline pollutant loadings by

pollutant and discharge status for each subcategory. 

10.7 TECI Post-Compliance Pollutant Loadings by Regulatory Option

TECI post-compliance pollutant loadings represent the pollutant loadings that

would be discharged following implementation of the regulatory options. Model facility postcompliance pollutant loadings were calculated using the following steps. First, model facility

baseline pollutant loadings were calculated as described in Section 10.6. Second, these loadings

were converted to baseline pollutant effluent concentrations for each model facility using the

baseline pollutant loadings, the facility process wastewater flow, and a conversion factor. Third,

the baseline pollutant effluent concentrations were compared to the effluent concentrations

achieved by each regulatory option. Finally, the lower of these concentrations was used along

with the facility flow and an appropriate conversion factor to determine the model facility postcompliance pollutant loadings for each regulatory option.
Section 10.0 - Pollutant Reduction Estimates

10-11

The model facility post-compliance pollutant loadings were then weighted using

the statistically derived weighting factors for each model facility. The weighted model facility

post-compliance pollutant loadings were then summed to estimate the post-compliance pollutant

loadings for the entire TECI. Tables 10-1 through 10-10 present the total industry postcompliance pollutant loadings by pollutant and discharge status for each subcategory.

10.8 TECI Pollutant Loading Reduction Estimates

The pollutant loading reductions represent the pollutant removal achieved through

implementation of the regulatory options. Therefore, the pollutant loading reductions are the

difference between the post-compliance pollutant loadings and the baseline pollutant loadings for

each regulatory option considered. Estimated pollutant loading reductions achieved by each

regulatory option are described below by regulation and are shown in Tables 10-1 through 10-10.

10.8.1 BPT

Table 10-11 summarizes pollutant loading reductions for each TECI regulatory

option considered for BPT. Although EPA developed a BPT option for the Truck/Hopper and

Rail/Hopper Subcategories, pollutant reductions for this option were not estimated for these

subcategories because none of the model facilities in these subcategories are direct dischargers. 

Tables 10-1 through 10-4 present the BPT pollutant loading reduction estimates

for all pollutants and regulatory options for the following subcategories:

C Truck/Chemical & Petroleum Subcategory (Table 10-1); 

C Rail/Chemical & Petroleum Subcategory (Table 10-2); 

C Barge/Chemical & Petroleum Subcategory (Table 10-3); and

C Barge/Hopper Subcategory (Table 10-4). 

As discussed in Section 9.2.9, EPA did not use the cost model to estimate

compliance costs for direct dischargers in the Barge/Chemical & Petroleum Subcategory. In
Section 10.0 - Pollutant Reduction Estimates

10-12

addition, EPA did not use the cost model to estimate pollutant loadings and reductions for this

subcategory for the same reasons discussed in Section 9.2.9. Because EPA used BOD and/or

COD baseline concentrations as indicators for treatment of other pollutants of interest, EPA did

not estimate baseline loadings and removals for other pollutants of interest.

Furthermore, EPA did not re-evaluate Option 2 pollutant loadings and removals

for the Barge/Chemical & Petroleum Subcategory because this option was determined to not

represent the average of the best treatment (because it is not commonly used in the industry) for

the proposed rule. The Proposed Technical Development Document presents baseline and option

loadings and removals for all options considered at proposal, including Option 2 (4). Note that

these loadings are not representative of the current state of the industry (because several facilities

have changed discharge status) and EPA’s available sampling data; however, the loadings

demonstrate the pollutant reduction capacity of Option 2.

10.8.2 BCT

BCT options developed and evaluated by EPA are identical to those developed

and evaluated for BPT. Therefore, BCT pollutant loading reductions are identical to the BPT

pollutant loading reductions for conventional pollutants discussed in Section 10.8.1.

10.8.3 BAT

BAT options developed and evaluated by EPA are identical to those developed

and evaluated for BPT. Therefore, BAT pollutant loading reductions are identical to the BPT

pollutant loading reductions for priority and nonconventional pollutants discussed in

Section 10.8.1.
Section 10.0 - Pollutant Reduction Estimates

10-13

10.8.4 PSES

Table 10-12 summarizes pollutant loading reductions for each TECI regulatory

option considered for PSES.

Tables 10-5 through 10-10 present the PSES pollutant loading reduction estimates

for all pollutants and regulatory options for the following subcategories:

C Truck/Chemical & Petroleum Subcategory (Table 10-5); 

C Rail/Chemical & Petroleum Subcategory (Table 10-6); 

C Food Subcategory (Table 10-7); 

C Truck/Hopper Subcategory (Table 10-8);

C Rail/Hopper Subcategory (Table 10-9); and 

C Barge/Hopper Subcategory (Table 10-10). 

As discussed in Section 9.2.9, based on a review of current operating and

discharge monitoring data (e.g., BOD and/or COD) for EPA’s model facilities in the

Barge/Chemical & Petroleum Subcategory, EPA believes that all model indirect discharging

facilities are meeting levels of control that would be established under PSES Options 1 and 2. 

Consequently, EPA estimates zero load reductions associated with these options. EPA believes

there may be some additional removals associated with PSES Option 3; however, EPA believes

that this option would not result in a significant reduction of toxic pollutants because most

pollutants are already treated to very low levels based on the Option 2 level of control. EPA did

not re-evaluate Option 3 pollutant loadings and removals for this subcategory because this option

was rejected for the proposed rule because of small incremental removals achieved by this option. 

The Proposed Development Document presents baseline and option loadings and removals for all

options considered at the proposal, including Option 3 (4). Note that these loadings are not

representative of the current state of the industry (because several facilities have changed

discharge status) and EPA’s available sampling data; however, the loadings demonstrate the

pollutant reduction capacity of Option 2 and Option 3.
Section 10.0 - Pollutant Reduction Estimates

For those references included in the administrative record supporting the TECI rulemaking, the document control 1

number (DCN) is included in parentheses at the end of the reference.

10-14

10.9 References1

1. Eastern Research Group, Inc. Development of Final Removal Efficiencies and

Treatment Effectiveness Concentrations for Regulated Subcategories. 

Memorandum from Melissa Cantor, Eastern Research Group, Inc. to the TECI

Rulemaking Record. March 28, 2000 (DCN T20513).

2. Eastern Research Group, Inc. Development of Treatment Effectiveness

Concentrations and Percent Removals. Memorandum from Grace Kitzmiller,

Eastern Research Group, Inc. to the TECI Rulemaking Record. April 29, 1998

(DCN T09764).

3. Eastern Research Group, Inc. Development of Transportation Equipment

Cleaning Industry Production Normalized Pollutant Loadings. Memorandum from

Grace Kitzmiller, Eastern Research Group, Inc. to the TECI Rulemaking Record. 

May 6, 1998 (DCN T09981).

4. U.S. Environmental Protection Agency, Office of Water. Development Document

for Proposed Effluent Limitations Guidelines and Standards for the Transportation

Equipment Cleaning Category. EPA-821-B-98-011, May 1998.
10-15

Section 10.0 - Pollutant Reduction

Table 10-1

Truck/Chemical & Petroleum Subcategory – Direct Dischargers

Summary of Pollutant Loadings and Reductions by Technology Option (a)

Pollutant Name Number (lb/yr) (lb/yr) (lb/yr) (lb/yr) (lb/yr) (lb/yr)

CAS Loading Loading Loading Loading from Baseline from Baseline

Untreated Baseline Option 1 Option 2 Option 1 Option 2

Wastewater Wastewater Wastewater Wastewater Pollutant Pollutant

Pollutant Pollutant Pollutant Pollutant Reduction Reduction

Bulk Conventionals

5-Day Biochemical Oxygen Demand NA 420,000 930 920 920 8.6 8.6

Oil and Grease (HEM) NA 250,000 700 700 700 6.5 6.5

Total Suspended Solids NA 230,000 3,400 3,400 3,400 32 32

Bulk Nonconventionals

Chemical Oxygen Demand NA 1,000,000 36,000 35,000 35,000 330 330

Total Organic Carbon NA 240,000 27,000 27,000 27,000 250 250

Total Petroleum Hydrocarbons (SGT-HEM) NA 23,000 640 640 640 6.0 6.0

Nonconventional Metals

Aluminum 7429905 1,100 25 25 25 <1 < 1

Boron 7440428 580 35 35 35 <1 < 1

Iron 7439896 3,300 120 120 120 1.1 1.1

Manganese 7439965 170 27 27 27 <1 < 1

Phosphorus 7723140 9,800 2,800 2,700 2,700 26 26

Silicon 7440213 2,300 660 660 660 6.2 6.2

Tin 7440315 2,100 830 820 820 7.7 7.7

Titanium 7440326 34 2.5 2.4 2.4 <1 < 1

TOTAL Nonconventional Metals 19,000 4,500 4,400 4,400 41 41
10-16

Section 10.0 - Pollutant Reduction

Table 10-1 (Continued)

Pollutant Name Number (lb/yr) (lb/yr) (lb/yr) (lb/yr) (lb/yr) (lb/yr)

CAS Loading Loading Loading Loading from Baseline from Baseline

Untreated Baseline Option 1 Option 2 Option 1 Option 2

Wastewater Wastewater Wastewater Wastewater Pollutant Pollutant

Pollutant Pollutant Pollutant Pollutant Reduction Reduction

Nonconventional Organics

1,2,3,4,6,7,8-Heptachlorodibenzo-p-dioxin 35822469 < 1 < 1 < 1 < 1 < 1 < 1

1,2,3,4,6,7,8-Heptachlorodibenzofuran 67562394 < 1 < 1 < 1 < 1 < 1 < 1

2,4,5-T 93765 < 1 < 1 < 1 < 1 < 1 < 1

2-Methylnaphthalene 91576 13 1.3 1.3 1.3 < 1 < 1

2-Isopropylnaphthalene 2027170 33 1.3 1.3 1.3 < 1 < 1

2,4-DB (Butoxon) 94826 1.3 1.2 1.2 1.2 < 1 < 1

2,4,5-TP 93721 < 1 < 1 < 1 < 1 < 1 < 1

Acetone 67641 5,100 300 300 300 < 1 < 1

Adsorbable Organic Halides (AOX) 59473040 810 79 79 79 < 1 < 1

alpha-Terpineol 98555 45 1.3 1.3 1.3 < 1 < 1

Azinphos Methyl 86500 < 1 < 1 < 1 < 1 < 1 < 1

Benzoic Acid 65850 4,300 270 270 270 < 1 < 1

Benzyl Alcohol 100516 49 2.5 2.5 2.5 < 1 < 1

Dalapon 75990 < 1 < 1 < 1 < 1 < 1 < 1

Diallate 2303164 3.8 < 1 < 1 < 1 < 1 < 1

Dimethyl Sulfone 67710 1,300 1.3 1.3 1.3 < 1 < 1

Leptophos 21609905 1.0 < 1 < 1 < 1 < 1 < 1

m-Xylene 108383 360 1.3 1.3 1.3 < 1 < 1

MCPA 94746 100 34 34 34 < 1 < 1

Methyl Ethyl Ketone 78933 920 18 18 18 < 1 < 1

Methyl Isobutyl Ketone 108101 350 21 21 21 < 1 < 1
10-17

Section 10.0 - Pollutant Reduction

Table 10-1 (Continued)

Pollutant Name Number (lb/yr) (lb/yr) (lb/yr) (lb/yr) (lb/yr) (lb/yr)

CAS Loading Loading Loading Loading from Baseline from Baseline

Untreated Baseline Option 1 Option 2 Option 1 Option 2

Wastewater Wastewater Wastewater Wastewater Pollutant Pollutant

Pollutant Pollutant Pollutant Pollutant Reduction Reduction

n-Octadecane 593453 71 1.3 1.3 1.3 < 1 < 1

n-Triacontane 638686 39 1.3 1.3 1.3 < 1 < 1

n-Tetradecane 629594 89 1.3 1.3 1.3 < 1 < 1

n-Decane 124185 63 1.3 1.3 1.3 < 1 < 1

n-Docosane 629970 19 1.3 1.3 1.3 < 1 < 1

n-Dodecane 112403 200 1.3 1.3 1.3 < 1 < 1

n-Eicosane 112958 55 1.3 1.3 1.3 < 1 < 1

n-Hexacosane 630013 26 1.3 1.3 1.3 < 1 < 1

n-Hexadecane 544763 130 1.3 1.3 1.3 < 1 < 1

n-Tetracosane 646311 33 1.3 1.3 1.3 < 1 < 1

o-Cresol 95487 13 1.7 1.7 1.7 < 1 < 1

o+p-Xylene 136777612 180 1.3 1.3 1.3 < 1 < 1

Octachlorodibenzo-p-dioxin 3268879 < 1 < 1 < 1 < 1 < 1 < 1

p-Cresol 106445 13 1.7 1.7 1.7 < 1 < 1

p-Cymene 99876 10 1.3 1.3 1.3 < 1 < 1

Pentachloronitrobenzene 82688 1.4 < 1 < 1 < 1 < 1 < 1

Styrene 100425 570 1.7 1.7 1.7 < 1 < 1

Total Phenols NA 390 230 230 230 2.2 2.2

TOTAL Nonconventional Organics 15,000 990 990 990 3.7 3.7
10-18

Section 10.0 - Pollutant Reduction

Table 10-1 (Continued)

Pollutant Name Number (lb/yr) (lb/yr) (lb/yr) (lb/yr) (lb/yr) (lb/yr)

CAS Loading Loading Loading Loading from Baseline from Baseline

Untreated Baseline Option 1 Option 2 Option 1 Option 2

Wastewater Wastewater Wastewater Wastewater Pollutant Pollutant

Pollutant Pollutant Pollutant Pollutant Reduction Reduction

Other Nonconventionals

Fluoride 16984488 3,600 2,400 2,300 2,300 22 22

Nitrate/Nitrite NA 320 90 89 89 < 1 < 1

Total Phosphorus 14265442 4,600 1,200 1,200 1,200 12 12

Surfactants (MBAS) NA 3,000 130 130 130 1.2 1.2

TOTAL Other Nonconventionals 12,000 3,800 3,800 3,800 35 35

Priority Metals

Chromium 7440473 350 2.5 2.5 2.5 < 1 < 1

Copper 7440508 43 11 11 11 < 1 < 1

Mercury 7439976 < 1 < 1 < 1 < 1 < 1 < 1

Zinc 7440666 100 2.6 2.5 2.5 < 1 < 1

TOTAL Priority Metals 490 16 16 16 < 1 < 1

Priority Organics

1,2-Dichloroethane 107062 98 1.6 1.6 1.6 < 1 < 1

1,1,1-Trichloroethane 71556 130 1.3 1.3 1.3 < 1 < 1

1,2-Dichlorobenzene 95501 18 1.3 1.3 1.3 < 1 < 1

2-Chlorophenol 95578 11 1.7 1.7 1.7 < 1 < 1

Benzene 71432 6.4 1.3 1.3 1.3 < 1 < 1

beta-BHC 319857 < 1 < 1 < 1 < 1 < 1 < 1

Bis (2-ethylhexyl) Phthalate 117817 92 1.3 1.3 1.3 < 1 < 1

Chloroform 67663 12 1.3 1.3 1.3 < 1 < 1
10-19

Section 10.0 - Pollutant Reduction

Table 10-1 (Continued)

Pollutant Name Number (lb/yr) (lb/yr) (lb/yr) (lb/yr) (lb/yr) (lb/yr)

CAS Loading Loading Loading Loading from Baseline from Baseline

Untreated Baseline Option 1 Option 2 Option 1 Option 2

Wastewater Wastewater Wastewater Wastewater Pollutant Pollutant

Pollutant Pollutant Pollutant Pollutant Reduction Reduction

Di-n-Octyl Phthalate 117840 30 1.3 1.3 1.3 < 1 < 1

Ethylbenzene 100414 81 1.3 1.3 1.3 < 1 < 1

Methylene Chloride 75092 2,000 220 210 210 2.0 2.0

Naphthalene 91203 55 1.3 1.3 1.3 < 1 < 1

Tetrachloroethylene 127184 200 1.3 1.3 1.3 < 1 < 1

Toluene 108883 310 1.3 1.3 1.3 < 1 < 1

Trichloroethylene 79016 3.6 1.8 1.8 1.8 < 1 < 1

TOTAL Priority Organics 3,100 230 230 230 2.2 2.2

(a) All data are presented with two significant digits. Apparent inconsistencies in sums and differences are due to rounding.

NA - Not applicable.

Note: EPA did not revise the pollutant loadings and reductions to include 18 additional pollutants of interest and the final pollutant removal methodology because these

additional pollutant removals would have an insignificant impact on the total load removals.
10-20

Section 10.0 - Pollutant Reduction

Table 10-2

Rail/Chemical & Petroleum Subcategory – Direct Dischargers

Summary of Pollutant Loadings and Reductions by Technology Option (a)

Pollutant Name CAS Number (lb/yr) (lb/yr) (lb/yr) (lb/yr) (lb/yr) (lb/yr) (lb/yr) (lb/yr)

Untreated Baseline Option 1 Option 2 Option 3 Pollutant Pollutant Option 3

Wastewater Wastewater Wastewater Wastewater Wastewater Reduction Reduction Pollutant

Pollutant Pollutant Pollutant Pollutant Pollutant from from Reduction

Loading Loading Loading Loading Loading Baseline Baseline from Baseline

Option 1 Option 2

Bulk Conventionals

5-Day Biochemical Oxygen Demand NA 8,200 62 62 62 55 0 0 7.5

Oil and Grease (HEM) NA 3,600 50 50 28 28 0 22 22

Total Suspended Solids NA 2,400 85 85 85 23 0 0 62

Bulk Nonconventionals

Chemical Oxygen Demand NA 19,000 770 770 770 760 0 0 15

Total Dissolved Solids NA 37,000 34,000 34,000 25,000 21,000 0 9,200 13,000

Total Organic Carbon NA 4,500 770 770 540 510 0 230 260

Total Petroleum Hydrocarbons

(SGT-HEM) NA 860 87 87 28 28 0 59 59

Nonconventional Metals

Aluminum 7429905 55 23 23 12 < 1 0 10 22

Barium 7440393 3.4 3.3 3.3 1.1 1.1 0 2.2 2.2

Boron 7440428 8.6 7.6 7.6 6.3 5.5 0 1.4 2.1

Calcium 7440702 170 130 130 130 130 0 2.7 2.7

Iron 7439896 70 70 70 < 1 < 1 0 69 69

Magnesium 7439954 69 57 57 55 55 0 1.7 1.7

Manganese 7439965 3.5 2.9 2.9 1.9 1.9 0 < 1 < 1

Phosphorus 7723140 56 45 45 8.5 5.7 0 36 39

Potassium 7440097 4,500 4,200 4,200 3,300 3,100 0 890 1,100

Silicon 7440213 57 57 57 39 39 0 18 18
10-21

Section 10.0 - Pollutant Reduction

Table 10-2 (Continued)

Pollutant Name CAS Number (lb/yr) (lb/yr) (lb/yr) (lb/yr) (lb/yr) (lb/yr) (lb/yr) (lb/yr)

Untreated Baseline Option 1 Option 2 Option 3 Pollutant Pollutant Option 3

Wastewater Wastewater Wastewater Wastewater Wastewater Reduction Reduction Pollutant

Pollutant Pollutant Pollutant Pollutant Pollutant from from Reduction

Loading Loading Loading Loading Loading Baseline Baseline from Baseline

Option 1 Option 2

Sodium 7440235 7,800 6,900 6,900 4,900 4,800 0 1,900 2,100

Sulfur 7704349 2,200 2,000 2,000 1,500 1,300 0 450 620

Titanium 7440326 < 1 < 1 < 1 < 1 < 1 0 < 1 < 1

TOTAL Nonconventional Metals 15,000 13,000 13,000 10,000 9,500 0 3,400 3,900

Nonconventional Organics

1-Methylphenanthrene 832699 < 1 < 1 < 1 < 1 < 1 0 < 1 < 1

2,4-Diaminotoluene 95807 7.3 7.3 7.3 6.9 < 1 0 < 1 6.7

2,4,5-TP 93721 < 1 < 1 < 1 < 1 < 1 0 < 1 < 1

2,4,5-T 93765 < 1 < 1 < 1 < 1 < 1 0 < 1 < 1

2,4-DB (Butoxon) 94826 < 1 < 1 < 1 < 1 < 1 0 < 1 < 1

Acephate 30560191 3.0 2.9 2.9 2.5 < 1 0 < 1 2.8

Acetone 67641 2.1 < 1 < 1 < 1 < 1 0 0 0

Adsorbable Organic Halides (AIX) 59473040 5.3 1.7 1.7 1.6 1.2 0 < 1 < 1

Benefluralin 1861401 < 1 < 1 < 1 < 1 < 1 0 < 1 < 1

Benzoic Acid 65850 7.8 < 1 < 1 < 1 < 1 0 0 < 1

Carbazole 86748 < 1 < 1 < 1 < 1 < 1 0 < 1 < 1

Dacthal (DCPA) 1861321 < 1 < 1 < 1 < 1 < 1 0 < 1 < 1

Diallate 2303164 1.3 < 1 < 1 < 1 < 1 0 < 1 < 1

Dicamba 1918009 2.0 1.9 1.9 < 1 < 1 0 1.9 1.9

Dichloroprop 120365 < 1 < 1 < 1 < 1 < 1 0 < 1 < 1

Dimethyl Sulfone 67710 < 1 < 1 < 1 < 1 < 1 0 < 1 < 1

Dinoseb 88857 < 1 < 1 < 1 < 1 < 1 0 < 1 < 1

Gamma-chlordane 5103742 < 1 < 1 < 1 < 1 < 1 0 < 1 < 1

Hexanoic Acid 142621 11 11 11 6.0 6.0 0 4.9 4.9
10-22

Section 10.0 - Pollutant Reduction

Table 10-2 (Continued)

Pollutant Name CAS Number (lb/yr) (lb/yr) (lb/yr) (lb/yr) (lb/yr) (lb/yr) (lb/yr) (lb/yr)

Untreated Baseline Option 1 Option 2 Option 3 Pollutant Pollutant Option 3

Wastewater Wastewater Wastewater Wastewater Wastewater Reduction Reduction Pollutant

Pollutant Pollutant Pollutant Pollutant Pollutant from from Reduction

Loading Loading Loading Loading Loading Baseline Baseline from Baseline

Option 1 Option 2

m-Xylene 108383 < 1 < 1 < 1 < 1 < 1 0 0 0

MCPP 7085190 130 130 130 15 < 1 0 110 130

Methyl Ethyl Ketone 78933 < 1 < 1 < 1 < 1 < 1 0 < 1 < 1

n-Triacontane 638686 < 1 < 1 < 1 < 1 < 1 0 < 1 < 1

n-Tetracosane 646311 1.0 < 1 < 1 < 1 < 1 0 < 1 < 1

n-Tetradecane 629594 6.5 < 1 < 1 < 1 < 1 0 0 0

n-Octadecane 593453 5.7 < 1 < 1 < 1 < 1 0 0 0

n-Docosane 629970 1.2 < 1 < 1 < 1 < 1 0 0 0

n-Octacosane 630024 < 1 < 1 < 1 < 1 < 1 0 < 1 < 1

n-Dodecane 112403 1.7 < 1 < 1 < 1 < 1 0 0 0

n-Eicosane 112958 4.9 < 1 < 1 < 1 < 1 0 0 0

n-Hexadecane 544763 9.4 < 1 < 1 < 1 < 1 0 0 0

n-Hexacosane 630013 < 1 < 1 < 1 < 1 < 1 0 < 1 < 1

o+p-Xylene 136777612 < 1 < 1 < 1 < 1 < 1 0 0 0

Octachlorodibenzo-p-dioxin 3268879 < 1 < 1 < 1 < 1 < 1 0 < 1 < 1

Octachlorodibenzofuran 39001020 < 1 < 1 < 1 < 1 < 1 0 < 1 < 1

p-Cresol 106445 < 1 < 1 < 1 < 1 < 1 0 0 < 1

Pentachloronitrobenzene 82688 < 1 < 1 < 1 < 1 < 1 0 < 1 < 1

Propachlor 1918167 < 1 < 1 < 1 < 1 < 1 0 0 0

Propazine 139402 < 1 < 1 < 1 < 1 < 1 0 0 < 1

Styrene 100425 < 1 < 1 < 1 < 1 < 1 0 0 0

Terbacil 5902512 < 1 < 1 < 1 < 1 < 1 0 0 0

Terbuthylazine 5915413 9.4 9.3 9.3 6.7 < 1 0 2.6 9.3
10-23

Section 10.0 - Pollutant Reduction

Table 10-2 (Continued)

Pollutant Name CAS Number (lb/yr) (lb/yr) (lb/yr) (lb/yr) (lb/yr) (lb/yr) (lb/yr) (lb/yr)

Untreated Baseline Option 1 Option 2 Option 3 Pollutant Pollutant Option 3

Wastewater Wastewater Wastewater Wastewater Wastewater Reduction Reduction Pollutant

Pollutant Pollutant Pollutant Pollutant Pollutant from from Reduction

Loading Loading Loading Loading Loading Baseline Baseline from Baseline

Option 1 Option 2

Total Phenols NA 2.5 1.8 1.8 1.2 < 1 0 < 1 1.6

TOTAL Nonconventional Organics 220 170 170 43 11 0 130 160

Other Nonconventionals

Ammonia as Nitrogen 7664417 180 33 33 33 28 0 0 4.6

Chloride 16887006 5,700 5,400 5,400 3,900 3,900 0 1,500 1,500

Fluoride 16984488 10 10 10 6.9 3.1 0 3.4 7.2

Nitrate/Nitrite NA 27 9.7 9.7 9.7 5.3 0 0 4.5

Surfactants (MBAS) NA 11 11 11 4.2 2.0 0 6.8 8.9

Total Phosphorus 14265442 57 41 41 7.8 3.0 0 33 38

TOTAL Other Nonconventionals 6,000 5,500 5,500 4,000 4,000 0 1,500 1,500

Priority Metals

Arsenic 7440382 < 1 < 1 < 1 < 1 < 1 0 < 1 < 1

Chromium 7440473 < 1 < 1 < 1 < 1 < 1 0 < 1 < 1

Copper 7440508 < 1 < 1 < 1 < 1 < 1 0 < 1 < 1

Zinc 7440666 2.1 1.5 1.5 < 1 < 1 0 1.4 1.4

TOTAL Priority Metals 3.0 2.4 2.4 < 1 < 1 0 1.9 2.0

Priority Organics

alpha-BHC 319846 < 1 < 1 < 1 < 1 < 1 0 < 1 < 1

Anthracene 120127 < 1 < 1 < 1 < 1 < 1 0 < 1 < 1

beta-BHC 319857 < 1 < 1 < 1 < 1 < 1 0 < 1 < 1

delta-BHC 319868 < 1 < 1 < 1 < 1 < 1 0 < 1 < 1

Dieldrin 60571 < 1 < 1 < 1 < 1 < 1 0 < 1 < 1

Endosulfan Sulfate 1031078 < 1 < 1 < 1 < 1 < 1 0 < 1 < 1

Ethylbenzene 100414 < 1 < 1 < 1 < 1 < 1 0 0 0
10-24

Section 10.0 - Pollutant Reduction

Table 10-2 (Continued)

Pollutant Name CAS Number (lb/yr) (lb/yr) (lb/yr) (lb/yr) (lb/yr) (lb/yr) (lb/yr) (lb/yr)

Untreated Baseline Option 1 Option 2 Option 3 Pollutant Pollutant Option 3

Wastewater Wastewater Wastewater Wastewater Wastewater Reduction Reduction Pollutant

Pollutant Pollutant Pollutant Pollutant Pollutant from from Reduction

Loading Loading Loading Loading Loading Baseline Baseline from Baseline

Option 1 Option 2

Fluoranthene 206440 < 1 < 1 < 1 < 1 < 1 0 < 1 < 1

Naphthalene 91203 < 1 < 1 < 1 < 1 < 1 0 0 0

Phenanthrene 85018 1.1 < 1 < 1 < 1 < 1 0 < 1 < 1

Phenol 108952 1.8 < 1 < 1 < 1 < 1 0 < 1 < 1

Pyrene 129000 < 1 < 1 < 1 < 1 < 1 0 < 1 < 1

TOTAL Priority Organics 5.0 < 1 < 1 < 1 < 1 0 < 1 < 1

(a) All data are presented with two significant digits. Apparent inconsistencies in sums and differences are due to rounding.

NA - Not applicable.
10-25

Section 10.0 - Pollutant Reduction

Table 10-3

Barge/Chemical & Petroleum Subcategory – Direct Dischargers

Summary of Pollutant Loadings and Reductions by Technology Option (a)

Pollutant Name Number (lb/yr) (lb/yr) (lb/yr) (lb/yr) (lb/yr) (lb/yr)

CAS Loading Loading Loading Loading from Baseline from Baseline

Untreated Baseline Option 1 Option 2 Option 1 Option 2

Wastewater Wastewater Wastewater Wastewater Pollutant Pollutant

Pollutant Pollutant Pollutant Pollutant Reduction Reduction

Bulk Conventionals

5-Day Biochemical Oxygen Demand NA 2,300,000 22,000 6,200 < 6,200 16,000 > 16,000

Total Suspended Solids NA 760,000 5,400 2,100 < 2,100 3,300 > 3,300

Bulk Nonconventionals

Chemical Oxygen Demand NA 14,000,000 150,000 77,000 < 77,000 69,000 > 69,000

(a) All data are presented with two significant digits. Apparent inconsistencies in sums and differences are due to rounding.

NA - Not applicable.
10-26

Section 10.0 - Pollutant Reduction

Table 10-4

Barge/Hopper Subcategory – Direct Dischargers

Summary of Pollutant Loadings and Reductions by Technology Option (a)

Pollutant Name CAS Number (lb/yr) (lb/yr) (lb/yr) (lb/yr)

Untreated Baseline Option 1

Wastewater Wastewater Wastewater Option 1

Pollutant Pollutant Pollutant Pollutant Reduction

Loading Loading Loading from Baseline

Bulk Conventionals

Total Suspended Solids NA 28,000 19,000 10,000 8,600

Bulk Nonconventionals

Chemical Oxygen Demand NA 44,000 8,700 6,000 2,700

Nonconventional Metals

Aluminum 7429905 300 210 95 110

Calcium 7440702 5,400 3,800 2,100 1,700

Iron 7439896 1,800 1,200 500 670

Manganese 7439965 55 38 18 20

Titanium 7440326 8.6 6.0 1.8 4.2

TOTAL Nonconventional Metals 7,600 5,200 2,700 2,500

Priority Metals

Beryllium 7440417 < 1 < 1 < 1 < 1

Chromium 7440473 2.5 1.7 1.5 < 1

Zinc 7440666 15 3.4 1.8 1.6

TOTAL Priority Metals 18 5.2 3.4 1.8

(a) All data are presented with two significant digits. Apparent inconsistencies in sums and differences are due to rounding.

NA - Not applicable.

Note: Load reductions include a high bias because some facilities included in the pollutant reduction analysis would be excluded because of low flow. In addition, EPA did not revise the pollutant

loadings to include additional pollutants of interest and the final pollutant removal methodology because these additional pollutant removals would have an insignificant impact on the total load

removals.
10-27

Section 10.0 - Pollutant Reduction

Table 10-5

Truck/Chemical & Petroleum Subcategory – Indirect Dischargers

Summary of Pollutant Loadings and Reductions by Technology Option (a)

Pollutant Name Number (lb/yr) (lb/yr) (lb/yr) (lb/yr) (lb/yr) (lbs/yr) (lb/yr) (lb/yr)

CAS Loading Loading Loading Loading Loading from Baseline from Baseline from Baseline

Untreated Baseline Option A Option 1 Option 2 Option A Option 1 Option 2

Wastewater Wastewater Wastewater Wastewater Wastewater Pollutant Pollutant Pollutant

Pollutant Pollutant Pollutant Pollutant Pollutant Reductions Reduction Reduction

Bulk Conventionals

5-Day Biochemical Oxygen

Demand NA 18,000,000 9,900,000 8,200,000 790,000 790,000 1,800,000 9,100,000 9,100,000

Oil and Grease (HEM) NA 11,000,000 6,400,000 190,000 170,000 170,000 6,200,000 6,300,000 6,300,000

Total Suspended Solids NA 9,800,000 5,300,000 4,000,000 350,000 130,000 1,300,000 5,000,000 5,200,000

Bulk Nonconventionals

Chemical Oxygen Demand NA 45,000,000 29,000,000 28,000,000 12,000,000 5,000,000 1,600,000 17,000,000 24,000,000

Total Dissolved Solids NA 30,000,000 30,000,000 30,000,000 30,000,000 20,000,000 73,000 73,000 10,000,000

Total Organic Carbon NA 11,000,000 9,100,000 8,900,000 7,600,000 1,200,000 250,000 1,500,000 8,000,000

Total Petroleum Hydrocarbons

(SGT-HEM) NA 1,000,000 620,000 63,000 60,000 60,000 560,000 560,000 560,000

Nonconventional Metals

Aluminum 7429905 48,000 27,000 15,000 2,600 550 12,000 25,000 27,000

Boron 7440428 25,000 22,000 21,000 18,000 1,500 66 3,500 20,000

Calcium 7440702 1,900,000 1,700,000 1,700,000 1,500,000 1,200,000 22,000 240,000 520,000

Iron 7439896 140,000 81,000 41,000 5,100 1,000 40,000 76,000 80,000

Magnesium 7439954 450,000 270,000 180,000 58,000 56,000 92,000 210,000 210,000

Manganese 7439965 4,000 1,900 920 570 570 970 1,300 1,300

Molybdenum 7439987 600 530 510 450 450 24 81 81

Phosphorus 7723140 430,000 260,000 210,000 79,000 54,000 52,000 180,000 210,000

Potassium 7440097 200,000 180,000 180,000 160,000 160,000 470 17,000 17,000

Silicon 7440213 100,000 62,000 51,000 20,000 16,000 11,000 42,000 46,000
10-28

Section 10.0 - Pollutant Reduction

Table 10-5 (Continued)

Pollutant Name Number (lb/yr) (lb/yr) (lb/yr) (lb/yr) (lb/yr) (lbs/yr) (lb/yr) (lb/yr)

CAS Loading Loading Loading Loading Loading from Baseline from Baseline from Baseline

Untreated Baseline Option A Option 1 Option 2 Option A Option 1 Option 2

Wastewater Wastewater Wastewater Wastewater Wastewater Pollutant Pollutant Pollutant

Pollutant Pollutant Pollutant Pollutant Pollutant Reductions Reduction Reduction

Sodium 7440235 6,600,000 6,400,000 6,300,000 6,100,000 4,200,000 16,000 210,000 2,200,000

Strontium 7440246 15,000 13,000 12,000 11,000 11,000 680 1,900 1,900

Sulfur 7704349 3,000,000 3,000,000 3,000,000 3,000,000 2,200,000 7,300 7,300 850,000

Tin 7440315 93,000 69,000 64,000 43,000 6,400 4,700 26,000 62,000

Titanium 7440326 1,500 840 430 91 52 410 750 790

TOTAL Nonconventional Metals 13,000,000 12,000,000 12,000,000 11,000,000 7,800,000 260,000 1,000,000 4,200,000

Nonconventional Organics

1,2,3,4,6,7,8-Heptachlorodibenzop-dioxin 35822469 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1

1,2,3,4,6,7,8-

Heptachlorodibenzofuran 67562394 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1

2,4-D 94757 22 18 18 15 15 < 1 3.3 3.3

2,4,5-T 93765 6.8 3.8 3.8 1.1 < 1 < 1 2.7 3.1

2-Methylnaphthalene 91576 550 330 160 55 55 170 280 280

2-Isopropylnaphthalene 2027170 1,400 790 540 55 55 240 730 730

2,4-DB (Butoxon) 94826 50 39 39 30 14 < 1 9.3 25

2,4,5-TP 93721 4.8 3.2 3.2 1.8 1.8 < 1 1.4 1.4

Acetone 67641 220,000 190,000 190,000 160,000 40,000 590 34,000 150,000

Adsorbable Organic Halides

(AOX) 59473040 35,000 21,000 20,000 6,600 3,000 1,300 15,000 18,000

alpha-Terpineol 98555 2,000 1,400 1,300 770 55 33 610 1,300

Azinphos Methyl 86500 33 19 19 5.9 5.9 < 1 14 14

Benzoic Acid 65850 190,000 170,000 170,000 150,000 64,000 470 16,000 100,000

Benzyl Alcohol 100516 2,100 1,200 940 110 84 230 1,100 1,100

Dalapon 75990 7.1 7.1 7.1 7.1 2.5 < 1 < 1 4.6

Diallate 2303164 150 87 86 29 13 < 1 58 73
10-29

Section 10.0 - Pollutant Reduction

Table 10-5 (Continued)

Pollutant Name Number (lb/yr) (lb/yr) (lb/yr) (lb/yr) (lb/yr) (lbs/yr) (lb/yr) (lb/yr)

CAS Loading Loading Loading Loading Loading from Baseline from Baseline from Baseline

Untreated Baseline Option A Option 1 Option 2 Option A Option 1 Option 2

Wastewater Wastewater Wastewater Wastewater Wastewater Pollutant Pollutant Pollutant

Pollutant Pollutant Pollutant Pollutant Pollutant Reductions Reduction Reduction

Dimethyl Sulfone 67710 58,000 31,000 19,000 55 55 11,000 31,000 31,000

Dinoseb 88857 17 15 15 13 13 < 1 1.9 1.9

Leptophos 21609905 45 29 28 11 11 < 1 18 18

m-Xylene 108383 16,000 8,100 8,000 720 55 48 7,300 8,000

MCPA 94746 4,500 2,900 950 790 570 2,000 2,200 2,400

Methyl Ethyl Ketone 78933 40,000 35,000 35,000 30,000 3,600 100 5,000 31,000

Methyl Isobutyl Ketone 108101 15,000 11,000 11,000 7,400 1,700 38 3,700 9,500

n-Octadecane 593453 3,000 1,600 1,000 55 55 610 1,600 1,600

n-Triacontane 638686 1,700 900 730 55 55 170 850 850

n-Tetradecane 629594 3,800 2,100 940 55 55 1,200 2,000 2,000

n-Decane 124185 2,800 1,400 1,400 55 55 8.7 1,300 1,300

n-Docosane 629970 830 470 310 55 55 160 420 420

n-Dodecane 112403 8,800 4,400 4,300 55 55 28 4,300 4,300

n-Eicosane 112958 2,300 1,300 910 140 55 400 1,200 1,200

n-Hexacosane 630013 1,100 620 460 55 55 170 570 570

n-Hexadecane 544763 5,600 3,100 1,400 55 55 1,600 3,000 3,000

n-Tetracosane 646311 1,400 780 500 55 55 280 720 720

Octachlorodibenzo-p-dioxin 3268879 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1

o-Cresol 95487 580 320 310 56 55 1.9 260 260

o+p-Xylene 136777612 8,000 4,200 4,200 450 55 25 3,700 4,100

p-Cresol 106445 550 510 510 470 57 1.4 39 460

p-Cymene 99876 450 270 260 81 55 8.9 190 220

Pentachloronitrobenzene 82688 60 30 30 < 1 < 1 < 1 30 30

Styrene 100425 25,000 15,000 13,000 4,400 150 1,600 11,000 15,000
10-30

Section 10.0 - Pollutant Reduction

Table 10-5 (Continued)

Pollutant Name Number (lb/yr) (lb/yr) (lb/yr) (lb/yr) (lb/yr) (lbs/yr) (lb/yr) (lb/yr)

CAS Loading Loading Loading Loading Loading from Baseline from Baseline from Baseline

Untreated Baseline Option A Option 1 Option 2 Option A Option 1 Option 2

Wastewater Wastewater Wastewater Wastewater Wastewater Pollutant Pollutant Pollutant

Pollutant Pollutant Pollutant Pollutant Pollutant Reductions Reduction Reduction

Total Phenols NA 17,000 13,000 13,000 8,800 6,900 53 4,000 6,000

TOTAL Nonconventional Organics 660,000 520,000 500,000 370,000 120,000 23,000 150,000 400,000

Other Nonconventionals

Ammonia as Nitrogen 7664417 800,000 730,000 630,000 630,000 450,000 100,000 100,000 280,000

Chloride 16887006 4,500,000 4,500,000 4,500,000 4,500,000 3,000,000 11,000 11,000 1,500,000

Fluoride 16984488 160,000 120,000 110,000 79,000 43,000 14,000 42,000 78,000

Nitrate/Nitrite NA 14,000 13,000 13,000 13,000 3,700 34 570 9,400

Total Phosphorus 14265442 200,000 120,000 120,000 46,000 24,000 4,900 79,000 100,000

Surfactants (MBAS) NA 130,000 89,000 79,000 44,000 5,400 10,000 45,000 84,000

TOTAL Other Nonconventionals 5,800,000 5,600,000 5,500,000 5,300,000 3,600,000 140,000 280,000 2,100,000

Priority Metals

Cadmium 7440439 140 98 92 54 53 5.5 44 45

Chromium 7440473 15,000 7,800 6,800 110 74 1,000 7,700 7,700

Copper 7440508 1,900 1,200 790 420 300 420 800 910

Mercury 7439976 12 6.6 6.5 1.1 1.1 < 1 5.5 5.5

Nickel 7440020 1,800 1,500 1,400 1,100 880 110 380 620

Zinc 7440666 4,500 2,500 1,500 110 110 930 2,400 2,400

TOTAL Priority Metals 23,000 13,000 11,000 1,800 1,400 2,500 11,000 12,000

Priority Organics

1,2-Dichloroethane 107062 4,300 2,400 2,400 620 66 14 1,800 2,400

1,1,1-Trichloroethane 71556 5,500 3,000 3,000 500 55 18 2,500 3,000

1,2-Dichlorobenzene 95501 780 410 410 55 55 2.5 360 360

2-Chlorophenol 95578 480 280 250 63 55 29 220 220

2,4,6-Trichlorophenol 88062 1,500 1,100 980 780 420 160 360 730
10-31

Section 10.0 - Pollutant Reduction

Table 10-5 (Continued)

Pollutant Name Number (lb/yr) (lb/yr) (lb/yr) (lb/yr) (lb/yr) (lbs/yr) (lb/yr) (lb/yr)

CAS Loading Loading Loading Loading Loading from Baseline from Baseline from Baseline

Untreated Baseline Option A Option 1 Option 2 Option A Option 1 Option 2

Wastewater Wastewater Wastewater Wastewater Wastewater Pollutant Pollutant Pollutant

Pollutant Pollutant Pollutant Pollutant Pollutant Reductions Reduction Reduction

Benzene 71432 280 170 170 58 55 < 1 110 110

beta-BHC 319857 3.9 1.9 1.9 < 1 < 1 < 1 1.4 1.4

Bis (2-ethylhexyl) Phthalate 117817 4,000 2,100 1,900 84 55 160 2,000 2,000

Chloroform 67663 530 350 330 170 85 24 180 270

Di-n-Octyl Phthalate 117840 1,300 690 680 55 55 4.2 630 630

Endosulfan Sulfate 1031078 2.8 2.6 2.6 2.5 2.5 < 1 < 1 < 1

Endrin Aldehyde 7421934 35 35 35 35 35 < 1 < 1 < 1

Ethylbenzene 100414 3,500 1,900 1,800 210 55 77 1,700 1,800

gamma-BHC 58899 1.8 1.8 1.8 1.8 1.0 < 1 < 1 < 1

Methylene Chloride 75092 88,000 65,000 58,000 39,000 6,300 6,800 25,000 58,000

Naphthalene 91203 2,400 1,300 1,000 110 55 270 1,200 1,200

Phenol 108952 12,000 11,000 9,800 9,200 7,300 800 1,400 3,400

Tetrachloroethylene 127184 8,800 5,200 130 55 55 5,000 5,100 5,100

Toluene 108883 14,000 8,200 8,100 2,700 55 46 5,900 8,100

Trichloroethylene 79016 160 110 110 57 55 < 1 56 58

TOTAL Priority Organics 150,000 100,000 89,000 54,000 15,000 14,000 48,000 88,000

(a) All data are presented with two significant digits. Apparent inconsistencies in sums and differences are due to rounding.

NA - Not applicable.
10-32

Section 10.0 - Pollutant Reduction

Table 10-6

Rail/Chemical & Petroleum Subcategory – Indirect Dischargers

Summary of Pollutant Loadings and Reductions by Technology Option (a)

Pollutant Name Number (lb/yr) (lb/yr) (lb/yr) (lb/yr) (lb/yr) (lb/yr) (lb/yr) (lb/yr)

CAS Loading Loading Loading Loading Loading Baseline Baseline Baseline

Untreated Baseline Option 1 Option 2 Option 3 Pollutant Pollutant Pollutant

Wastewater Wastewater Wastewater Wastewater Wastewater Reduction Reduction Reduction

Pollutant Pollutant Pollutant Pollutant Pollutant from from from

Option 1 Option 2 Option 3

Bulk Conventionals

Biochemical Oxygen Demand NA 1,300,000 990,000 970,000 800,000 700,000 23,000 190,000 290,000

Oil and Grease (HEM) NA 590,000 440,000 19,000 8,200 6,600 420,000 430,000 430,000

Total Suspended Solids NA 370,000 360,000 130,000 25,000 4,600 230,000 340,000 360,000

Bulk Nonconventionals

Chemical Oxygen Demand NA 3,000,000 2,700,000 1,400,000 1,200,000 1,200,000 1,300,000 1,500,000 1,500,000

Total Dissolved Solids NA 5,700,000 5,600,000 4,300,000 3,800,000 3,200,000 1,300,000 1,800,000 2,400,000

Total Organic Carbon NA 710,000 700,000 530,000 460,000 430,000 170,000 240,000 270,000

Total Petroleum Hydrocarbons (SGT-HEM) NA 130,000 100,000 6,800 2,500 2,500 95,000 100,000 100,000

Nonconventional Metals

Aluminum 7429905 8,300 6,600 2,100 1,700 46 4,600 5,000 6,600

Barium 7440393 540 320 240 92 92 76 220 220

Boron 7440428 1,400 1,400 1,100 1,000 890 270 340 460

Calcium 7440702 30,000 29,000 24,000 24,000 24,000 4,900 5,100 5,100

Iron 7439896 11,000 4,000 3,600 98 46 390 3,900 4,000

Magnesium 7439954 12,000 12,000 9,900 9,800 9,800 1,800 1,900 1,900

Manganese 7439965 510 490 330 290 290 160 200 200

Phosphorus 7723140 7,600 7,200 2,800 920 580 4,400 6,300 6,600

Potassium 7440097 680,000 670,000 550,000 510,000 480,000 120,000 160,000 190,000

Silicon 7440213 9,000 7,300 7,100 6,200 6,200 140 1,100 1,100
10-33

Section 10.0 - Pollutant Reduction

Table 10-6 (Continued)

Pollutant Name Number (lb/yr) (lb/yr) (lb/yr) (lb/yr) (lb/yr) (lb/yr) (lb/yr) (lb/yr)

CAS Loading Loading Loading Loading Loading Baseline Baseline Baseline

Untreated Baseline Option 1 Option 2 Option 3 Pollutant Pollutant Pollutant

Wastewater Wastewater Wastewater Wastewater Wastewater Reduction Reduction Reduction

Pollutant Pollutant Pollutant Pollutant Pollutant from from from

Option 1 Option 2 Option 3

Sodium 7440235 1,200,000 1,200,000 860,000 760,000 740,000 300,000 400,000 420,000

Sulfur 7704349 340,000 330,000 260,000 230,000 210,000 70,000 94,000 120,000

Titanium 7440326 75 67 17 2.3 2.3 50 65 65

TOTAL Nonconventional Metals 2,300,000 2,200,000 1,700,000 1,500,000 1,500,000 500,000 680,000 760,000

Nonconventional Organics

1-Methylphenanthrene 832699 61 47 4.8 4.6 4.6 43 43 43

2,4-Diaminotoluene 95807 1,100 1,100 1,100 1,000 46 8.1 30 1,000

2,4,5-TP 93721 6.8 2.8 2.5 < 1 < 1 < 1 2.5 2.5

2,4,5-T 93765 6.8 6.7 2.6 < 1 < 1 4.1 6.1 6.3

2,4-DB (Butoxon) 94826 68 31 29 8.6 3.0 1.9 22 28

Acephate 30560191 460 450 400 380 21 53 76 430

Acetone 67641 1,100 1,000 660 660 570 360 360 460

Adsorbable Organic Halides 59473040 920 880 750 730 540 140 160 340

Benefluralin 1861401 1.4 1.3 < 1 < 1 < 1 < 1 1.1 1.3

Benzoic Acid 65850 1,800 1,700 1,200 1,200 37 500 500 1,600

Carbazole 86748 68 56 21 20 11 35 35 45

Dacthal (DCPA) 1861321 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1

Diallate 2303164 200 180 58 23 23 120 150 150

Dicamba 1918009 300 110 100 < 1 < 1 9.7 110 110

Dichloroprop 38120365 38 35 14 6.2 1.6 22 29 34

Dimethyl Sulfone 67710 40 33 12 11 11 21 22 22

Dinoseb 88857 17 17 6.0 < 1 < 1 11 16 16

gamma-Chlordane 5103742 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1
10-34

Section 10.0 - Pollutant Reduction

Table 10-6 (Continued)

Pollutant Name Number (lb/yr) (lb/yr) (lb/yr) (lb/yr) (lb/yr) (lb/yr) (lb/yr) (lb/yr)

CAS Loading Loading Loading Loading Loading Baseline Baseline Baseline

Untreated Baseline Option 1 Option 2 Option 3 Pollutant Pollutant Pollutant

Wastewater Wastewater Wastewater Wastewater Wastewater Reduction Reduction Reduction

Pollutant Pollutant Pollutant Pollutant Pollutant from from from

Option 1 Option 2 Option 3

Hexanoic Acid 142621 1,700 1,200 1,200 910 910 29 280 280

m-Xylene 108383 140 110 100 73 4.6 5.5 33 100

MCPP 7085190 20,000 8,900 7,500 1,200 62 1,400 7,700 8,900

Methyl Ethyl Ketone 78933 240 240 210 210 26 23 23 210

n-Hexacosane 630013 96 74 5.7 5.1 5.1 68 69 69

n-Triacontane 638686 63 50 6.1 4.8 4.8 44 45 45

n-Docosane 629970 180 140 6.8 4.8 4.8 130 130 130

n-Hexadecane 544763 1,400 1,000 7.0 4.7 4.7 1,000 1,000 1,000

n-Octadecane 593453 880 640 10 4.6 4.6 630 630 630

n-Tetradecane 629594 1,000 730 10 4.6 4.6 720 730 730

n-Dodecane 112403 280 220 15 4.6 4.6 200 210 210

n-Tetracosane 646311 160 120 7.3 4.8 4.8 110 110 110

n-Eicosane 112958 750 550 12 4.6 4.6 540 540 540

n-Octacosane 630024 59 46 5.5 4.6 4.6 41 42 42

o+p-Xylene 136777612 95 75 72 59 4.6 2.6 16 70

Octachlorodibenzo-p-dioxin 3268879 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1

Octachlorodibenzofuran 39001020 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1

p-Cresol 106445 30 30 30 30 4.6 < 1 < 1 26

Pentachloronitrobenzene 82688 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1

Propachlor 1918167 8.7 6.4 < 1 < 1 < 1 6.0 6.0 6.0

Propazine 139402 9.3 7.2 2.3 2.3 1.6 5.0 5.0 5.7

Styrene 100425 110 110 4.7 4.6 4.6 100 100 100

Terbacil 5902512 14 10 < 1 < 1 < 1 9.5 9.5 9.5
10-35

Section 10.0 - Pollutant Reduction

Table 10-6 (Continued)

Pollutant Name Number (lb/yr) (lb/yr) (lb/yr) (lb/yr) (lb/yr) (lb/yr) (lb/yr) (lb/yr)

CAS Loading Loading Loading Loading Loading Baseline Baseline Baseline

Untreated Baseline Option 1 Option 2 Option 3 Pollutant Pollutant Pollutant

Wastewater Wastewater Wastewater Wastewater Wastewater Reduction Reduction Reduction

Pollutant Pollutant Pollutant Pollutant Pollutant from from from

Option 1 Option 2 Option 3

Terbuthylazine 5915413 1,400 1,200 1,100 1,000 2.3 18 150 1,200

Total Phenols NA 430 400 250 210 42 150 190 360

TOTAL Nonconventional Organics 35,000 22,000 15,000 7,900 2,400 6,600 14,000 19,000

Other Nonconventionals

Ammonia as Nitrogen 7664417 19,000 19,000 19,000 19,000 16,000 110 110 2,800

Chloride 16887006 880,000 870,000 680,000 610,000 610,000 180,000 260,000 260,000

Fluoride 16984488 1,700 1,400 1,400 1,100 340 44 260 1,100

Nitrate/Nitrite NA 4,100 3,800 3,000 3,000 1,600 750 750 2,100

Total Phosphorus 142654462 7,400 6,800 2,400 900 350 4,400 5,900 6,500

Surfactants (MBAS) NA 2,100 1,300 1,200 680 330 110 670 1,000

TOTAL Other Nonconventionals 910,000 900,000 710,000 630,000 620,000 190,000 270,000 270,000

Priority Metals

Arsenic 7440382 34 32 21 19 13 10 13 19

Chromium 7440473 83 83 37 4.6 4.6 46 78 78

Copper 7440508 79 45 35 12 12 10 34 34

Zinc 7440666 330 310 88 9.2 9.2 220 300 300

TOTAL Priority Metals 530 470 180 44 38 290 420 420

Priority Organics

alpha-BHC 319846 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1

Anthracene 120127 80 62 8.8 4.7 4.7 53 57 57

beta-BHC 319857 18 13 < 1 < 1 < 1 13 13 13

delta-BHC 319868 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1

Dieldrin 60571 1.1 < 1 < 1 < 1 < 1 < 1 < 1 < 1
10-36

Section 10.0 - Pollutant Reduction

Table 10-6 (Continued)

Pollutant Name Number (lb/yr) (lb/yr) (lb/yr) (lb/yr) (lb/yr) (lb/yr) (lb/yr) (lb/yr)

CAS Loading Loading Loading Loading Loading Baseline Baseline Baseline

Untreated Baseline Option 1 Option 2 Option 3 Pollutant Pollutant Pollutant

Wastewater Wastewater Wastewater Wastewater Wastewater Reduction Reduction Reduction

Pollutant Pollutant Pollutant Pollutant Pollutant from from from

Option 1 Option 2 Option 3

Endosulfan Sulfate 1031078 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1

Ethylbenzene 100414 64 47 46 35 4.6 1.7 12 43

Fluoranthene 206440 74 57 5.7 4.9 4.9 51 52 52

Naphthalene 91203 55 50 20 11 5.0 30 39 45

Phenanthrene 85018 160 120 9.0 5.3 4.9 110 120 120

Phenol 108952 310 310 230 190 4.6 76 110 300

Pyrene 129000 58 45 5.5 4.9 4.9 39 40 40

TOTAL Priority Organics 830 710 330 260 34 380 440 670

(a) All data are presented with two significant digits. Apparent inconsistencies in sums and differences are due to rounding.

NA - Not applicable.
10-37

Section 10.0 - Pollutant Reduction

Table 10-7

Food Subcategory – Indirect Dischargers

Summary of Pollutant Loadings and Reductions by Technology Option (a)

Pollutant Name Number (lb/yr) (lb/yr) (lb/yr) (lb/yr) (lb/yr) (lb/yr)

CAS Loading Loading Loading Loading from Baseline from Baseline

Untreated Baseline Option 1 Option 2 Option 1 Option 2

Wastewater Wastewater Wastewater Wastewater Pollutant Pollutant

Pollutant Pollutant Pollutant Pollutant Reduction Reduction

Bulk Conventionals

5-Day Biochemical Oxygen Demand NA 22,000,000,000 22,000,000,000 22,000,000,000 29,000 3,000,000 22,000,000,000

Oil and Grease (HEM) NA 2,200,000,000 68,000,000 360,000 11,000 67,000,000 68,000,000

Total Suspended Solids NA 4,900,000,000 4,900,000,000 4,900,000,000 81,000 670,000 4,900,000,000

Bulk Nonconventionals

Chemical Oxygen Demand NA 110,000,000,000 110,000,000,000 110,000,000,000 95,000 15,000,000 110,000,000,000

Total Dissolved Solids NA 78,000,000,000 78,000,000,000 78,000,000,000 740,000 11,000,000 78,000,000,000

Total Organic Carbon NA 41,000,000,000 41,000,000,000 41,000,000,000 110,000 5,600,000 41,000,000,000

Total Petroleum Hydrocarbons

(SGT-HEM) NA 140,000,000 140,000,000 140,000,000 11,000 19,000 140,000,000

Nonconventional Organics

Benzoic Acid 65850 5,900,000 5,900,000 5,900,000 110 52 5,900,000

Hexanoic Acid 142621 140,000,000 140,000,000 140,000,000 51 1,200 140,000,000

TOTAL Nonconventional Organics 140,000,000 140,000,000 140,000,000 160 1,200 140,000,000

Other Nonconventionals

Ammonia as Nitrogen 7664417 7,900,000 7,800,000 7,800,000 580 1,100 7,800,000

Priority Organics

Phenol 108952 600,000 600,000 600,000 22 5.4 600,000

(a) All data are presented with two significant digits. Apparent inconsistencies in sums and differences are due to rounding.

NA - Not applicable.

Note: EPA did not revise the pollutant loadings to include additional pollutants of interest and the final pollutant removal methodology because these additional pollutant removals would have an

insignificant impact on the total load removals.
10-38

Section 10.0 - Pollutant Reduction

Table 10-8

Truck/Hopper Subcategory – Indirect Dischargers

Summary of Pollutant Loadings and Reductions by Technology Option (a)

Pollutant Name Number (lb/yr) (lb/yr) (lb/yr) (lb/yr)

CAS Loading Loading Loading from Baseline

Untreated Baseline Option 1 Option 1

Wastewater Wastewater Wastewater Pollutant

Pollutant Pollutant Pollutant Reduction

Bulk Conventionals

Total Suspended Solids NA 17,000 15,000 8,200 6,700

Bulk Nonconventionals

Chemical Oxygen Demand NA 7,600 6,800 4,800 2,000

Nonconventional Metals

Aluminum 7429905 180 160 76 88

Calcium 7440702 3,300 3,000 1,700 1,300

Iron 7439896 1,000 920 400 520

Manganese 7439965 34 30 15 16

Titanium 7440326 5.4 4.8 1.5 3.3

TOTAL Nonconventional Metals 4,600 4,100 2,200 2,000

Priority Metals

Beryllium 7440417 < 1 < 1 < 1 < 1

Chromium 7440473 1.5 1.3 1.2 < 1

Zinc 7440666 3.0 2.7 1.5 1.2

TOTAL Priority Metals 4.5 4.1 2.7 1.4

(a) All data are presented with two significant digits. Apparent inconsistencies in sums and differences are due to rounding.

NA - Not applicable.

Note: Load reductions include a high bias because some facilities included in the pollutant reduction analysis would be excluded because of low flow. In addition, EPA did not revise the pollutant

loadings to include additional pollutants of interest and the final pollutant removal methodology because these additional pollutant removals would have an insignificant impact on the total load

removals.
10-39

Section 10.0 - Pollutant Reduction

Table 10-9

Rail/Hopper Subcategory – Indirect Dischargers

Summary of Pollutant Loadings and Reductions by Technology Option (a)

Pollutant Name Number (lb/yr) (lb/yr) (lb/yr) (lb/yr)

CAS Loading Loading Loading from Baseline

Untreated Baseline Option 1 Option 1

Wastewater Wastewater Wastewater Pollutant

Pollutant Pollutant Pollutant Reduction

Bulk Conventionals

Total Suspended Solids NA 890 160 160 0

Bulk Nonconventionals

Chemical Oxygen Demand NA 5,100 96 96 0

Nonconventional Metals

Aluminum 7429905 17 1.5 1.5 0

Calcium 7440702 100 33 33 0

Iron 7439896 36 8.0 8.0 0

Manganese 7439965 1.5 < 1 < 1 0

Titanium 7440326 < 1 < 1 < 1 0

TOTAL Nonconventional Metals 160 43 43 0

Priority Metals

Beryllium 7440417 < 1 < 1 < 1 0

Chromium 7440473 < 1 < 1 < 1 0

Zinc 7440666 < 1 < 1 < 1 0

TOTAL Priority Metals 1 < 1 < 1 0

(a) All data are presented with two significant digits. Apparent inconsistencies in sums and differences are due to rounding.

NA - Not applicable.

Note: Load reductions include a high bias because some facilities included in the pollutant reduction analysis would be excluded because of low flow. In addition, EPA did not revise the pollutant

loadings to include additional pollutants of interest and the final pollutant removal methodology because these additional pollutant removals would have an insignificant impact on the total load

removals.
10-40

Section 10.0 - Pollutant Reduction

Table 10-10

Barge/Hopper Subcategory – Indirect Dischargers

Summary of Pollutant Loadings and Reductions by Technology Option (a)

Pollutant Name Number (lb/yr) (lb/yr) (lb/yr) (lb/yr)

CAS Loading Loading Loading from Baseline

Untreated Baseline Option 1 Option 1

Wastewater Wastewater Wastewater Pollutant

Pollutant Pollutant Pollutant Reduction

Bulk Conventionals

Total Suspended Solids NA 8,500 5,500 4,500 940

Bulk Nonconventionals

Chemical Oxygen Demand NA 3,900 3,200 2,700 550

Nonconventional Metals

Aluminum 7429905 94 51 42 8.7

Calcium 7440702 1,700 1,100 920 190

Iron 7439896 530 270 220 46

Manganese 7439965 17 9.7 8.1 1.7

Titanium 7440326 2.7 < 1 < 1 < 1

TOTAL Nonconventional Metals 2,400 1,400 1,200 250

Priority Metals

Beryllium 7440417 < 1 < 1 < 1 < 1

Chromium 7440473 < 1 < 1 < 1 < 1

Zinc 7440666 1.5 < 1 < 1 < 1

TOTAL Priority Metals 2 2 1 < 1

(a) All data are presented with two significant digits. Apparent inconsistencies in sums and differences are due to rounding.

NA - Not applicable.

Note: EPA did not revise the pollutant loadings to include additional pollutants of interest and the final pollutant removal methodology because these additional pollutant removals would have an

insignificant impact on the total load removals.
Section 10.0 - Pollutant Reduction

10-41

Table 10-11

BPT Pollutant Loading Reductions

Subcategory Option (pounds/year) (pounds/year) (pounds/year) (pounds/year) (pounds/year) (a)

BOD5 Loading TSS Loading (HEM) Loading Loading Pollutant Loading

Reduction Reduction Reduction Reduction Reduction

Oil and Grease Pollutant Nonconventional

Priority

Truck/Chemical & 1 8.6 32 6.5 2.3 81

Petroleum

2 8.6 32 6.5 2.3 81

Rail/Chemical & 1 0 0 0 0 0

Petroleum

2 0 0 22 2.2 5,000

3 7.5 62 22 2.3 5,600

Barge/Chemical & 1 16,000 3,300 NA NA NA

Petroleum

2 NC NC NC NC NC

Food 1 0 (b) 0 (b) 0 (b) 0 (b) 0 (b)

2 0 (b) 0 (b) 0 (b) 0 (b) 0 (b)

Barge/Hopper (c) 1 NR 8,600 NR 1.8 2,500

(a) The loading reductions presented exclude reduction of COD, TDS, TOC, and SGT-HEM.

(b) Pollutant reductions determined to be zero because all facilities identified by EPA currently meet the regulatory option.

(c) Load reductions include a high bias because some facilities included in the pollutant reduction analysis would be excluded because of low

flow. 

BOD - Biochemical oxygen demand (five-day). 5

TSS - Total suspended solids.

HEM - Hexane extractable material.

NR - Pollutant loading reductions not calculated because pollutant is not removed by this regulatory option.

NC - Not calculated because the regulatory option was not fully evaluated by EPA following the proposed rule.

NA - Not available because EPA did not have sufficient data to fully evaluate these pollutant removals.
Section 10.0 - Pollutant Reduction

10-42

Table 10-12

PSES Pollutant Loading Reductions

Subcategory Option Reduction (pounds/year) Reduction (pounds/year) (a)

Priority Pollutant Loading Nonconventional Pollutant Loading

Truck/Chemical & Petroleum A 16,000 420,000

1 60,000 1,500,000

2 99,000 6,700,000

Rail/Chemical & Petroleum 1 670 700,000

2 870 960,000

3 1,100 1,100,000

Barge/Chemical & Petroleum 1 0 0

2 0 0

3 NC NC

Food 1 5.5 2,300

2 600,000 150,000,000

Truck/Hopper (b) 1 1.4 2,200

Barge/Hopper (b) 1 < 1 250

(a) The loading reductions presented exclude reduction of COD, TDS, TOC, and SGT-HEM.

(b) Load reduction include a high bias because some facilities included in the pollutant reduction analysis would be excluded because of low

flow.

NC - Not calculated because the regulatory option was not fully evaluated by EPA following the proposed rule.
Section 11.0 - Non-Water Quality Impacts

11-1

11.0 NON-WATER QUALITY ENVIRONMENTAL IMPACTS

Sections 304(b) and 306 of the Clean Water Act require EPA to consider the nonwater quality environmental impacts of effluent limitations guidelines and standards. Therefore,

EPA evaluated the effects of the Transportation Equipment Cleaning Industry (TECI) final

regulatory options on energy consumption, air pollution, and solid waste generation. Sections

11.1 through 11.3 discuss these impacts and Section 11.4 lists references for this section. 

Reference 1 summarizes the results of these analyses. In addition to these non-water quality

environmental impacts, EPA considered the impacts of the final rule on noise pollution and water

and chemical use and determined these impacts to be negligible.

EPA did not directly evaluate non-water quality environmental impacts of the

pollution prevention alternative. However, considering pollution prevention and source reduction

techniques in the alternative, EPA believes that the non-water quality environmental impacts will

be less than estimated from the technology options.

11.1 Energy Impacts

Energy impacts resulting from the regulatory options include energy requirements

to operate wastewater treatment equipment such as aerators, pumps, and mixers. The Agency

evaluated the annual increase in electrical power consumption for each regulatory option relative

to the estimated current industry consumption for wastewater treatment.

Flow reduction technologies (a component of all regulatory options for most

subcategories) reduce energy requirements by reducing the number of operating hours per day

and/or operating days per year for wastewater treatment equipment currently operated by the

TECI. For some regulatory options, energy savings resulting from flow reduction exceed

requirements for operation of additional wastewater treatment equipment, resulting in a net

energy savings for these options.
Section 11.0 - Non-Water Quality Impacts

11-2

Based on EPA’s regulatory options (see Section 8.0), the Agency estimates a net

increase in electricity use for the TECI as a result of the final rule would be approximately 5

million kilowatt hours per year. In 1990, the total U.S. industrial electrical energy purchase was

approximately 756 billion kilowatt hours (2). EPA’s technology options would increase U.S.

industrial electrical energy purchase by 0.0007 percent. Therefore, the Agency concludes that the

effluent pollutant reduction benefits from the technology options exceed the potential adverse

effects from the estimated increase in energy consumption.

11.2 Air Emission Impacts

Transportation equipment cleaning (TEC) facilities generate volatile and

semivolatile organic pollutants, some of which are also on the list of Hazardous Air Pollutants in

Title 3 of the Clean Air Act Amendments of 1990. Air emissions from TEC facilities occur at

several stages of the equipment cleaning process. Prior to cleaning, tanks which have transported

volatile materials may be opened and vented with or without steam in a process called gas freeing. 

At some facilities, tanks are filled to capacity with water to displace vapors to the atmosphere or

to a combustion device. Tanks are then cleaned, typically using either heated cleaning solutions

or hot water. For recirculated cleaning solutions, pollutants may be volatilized from heated

cleaning solution storage tanks. For TEC wastewater, pollutants may volatilize as the wastewater

falls onto the cleaning bay floor, flows to floor drains and collection sumps, and conveys to

wastewater treatment. TEC wastewater typically passes through treatment units open to the

atmosphere where further pollutant volatilization may occur.

In order to quantify the impact of the regulation on air emissions at proposal, EPA

performed a WATER8 (3) model analysis to determine the quantity of air emissions that would

result from the treatment technology options. Reference 4 describes EPA’s model analysis in

detail. EPA estimated that the maximum increase in air emissions would be 153,000 kilograms

per year of organic pollutants (volatile and semivolatile organics), which represented

approximately 35 percent of the total organic pollutant wastewater load of raw TEC wastewater. 
Section 11.0 - Non-Water Quality Impacts

11-3

Since the final technology options are fairly similar to the proposed technology options, EPA

estimates that these estimates would not change significantly. 

EPA’s estimate of air emissions reflects the increase in emissions at TEC facilities,

and does not account for baseline air emissions that are currently being released to the atmosphere

at the POTW or as the wastewater is conveyed to the POTW. It is expected that much of the

increased emissions at indirect TEC facilities calculated for this rule are currently being released at

POTWs or during conveyance to the POTW. To a large degree, this rule will merely shift the

location at which the air emissions are released, rather than increasing the total air emissions from

TEC wastewater. As a result, air emission from TEC wastewater at POTWs are expected to be

reduced somewhat following implementation of this rule. EPA’s model analysis was performed

based on the most stringent regulatory options considered for each subcategory in order to create

a “worst case scenario” (i.e., the more treatment technologies used, the more chance of

volatilization of compounds to the air). For some subcategories, air emission impacts are

overestimated (see Section 12.0). 

In addition, to the extent that facilities currently operate treatment in place, the

results overestimate air emission impacts from the regulatory options. Additional details

concerning EPA’s model analysis to estimate air emission impacts are included in “Estimated Air

Emission Impacts of TEC Industry Regulatory Options” in the rulemaking record.

Based on the sources of air emissions in the TEC industry and limited data

concerning air pollutant emissions from TEC operations provided in response to the 1994

Detailed Questionnaire (most facilities did not provide air pollutant emissions estimates), EPA

estimates that the incremental air emissions resulting from the regulatory options are a small

percentage of air emissions generated by TEC operations.
Section 11.0 - Non-Water Quality Impacts

11-4

11.3 Solid Waste Impacts

Solid waste impacts resulting from the regulatory options include additional solid

wastes generated by wastewater treatment technologies. These solid wastes consist of

wastewater treatment residuals, including sludge, and waste oil. These impacts are discussed

below in Sections 11.3.1 through 11.3.2 respectively.

EPA also analyzed options containing activated carbon adsorption and organo

clay. EPA did not select any options containing these technologies, with the exception of BPT

Option 2 for the Truck/Chemical & Petroleum Subcategory (see Section 12.1.1). EPA does not

expect any incremental solid waste impacts from selecting this option because all known facilities

in this subcategory currently operate activated carbon adsorption.

11.3.1 Wastewater Treatment Sludge

Wastewater treatment sludge is generated in two forms: dewatered sludge (or

filter cake) generated by a filter press and/or wet sludge generated by treatment units such as

oil/water separators, dissolved air flotation, and biological treatment. The Agency evaluated

impacts of the increased sludge generation for each regulatory option relative to the estimated

current industry wastewater treatment sludge generation.

Many facilities that currently operate wastewater treatment systems do not

dewater wastewater treatment sludge. Storage, transportation, and disposal of relatively large

volumes of undewatered sludge that would be generated after implementing the TECI regulatory

options is less cost-effective than dewatering sludge on site and disposing the greatly reduced

volume of resulting filter cake. However, following implementation of these regulations, EPA

believes TEC facilities would install sludge dewatering equipment to handle increases in sludge

generation. For these reasons, EPA estimates net decreases in the volume of wet sludge

generated by the industry and net increases in the volume of dry sludge generated by the industry.
Section 11.0 - Non-Water Quality Impacts

11-5

EPA estimates that the rule will result in a decrease in wet sludge generation of

approximately 17 million gallons per year, which represents an estimated 98 percent decrease

from current wet sludge generation. In addition, EPA estimates that the rule will result in an

increase in dewatered sludge generation of approximately 35 thousand cubic yards per year,

which represents an estimated 120 percent increase from current dewatered sludge generation.

Based on responses to the Detailed Questionnaire, most TEC facilities currently

dispose wastewater treatment sludge in nonhazardous landfills. Sludge characterization data

provided by industry and collected during EPA’s TECI sampling program confirm that

wastewater treatment sludge generated by the TECI is nonhazardous as determined by the

Toxicity Characteristic Rule under the Resource Conservation and Recovery Act. Compliance

cost estimates for the TECI regulatory options are based on disposal of wastewater treatment

sludge in nonhazardous waste landfills.

The Agency concludes that the effluent benefits and the reductions in wet sludge

from the technology options exceed the potential adverse effects from the estimated increase in

wastewater treatment sludge generation.

11.3.2 Waste Oil

EPA estimates that compliance with this regulation will result in an increase in

waste oil generation at TEC sites based on removal of oil from wastewater via oil/water

separation. EPA estimates that this increase in waste oil generation will be approximately

667,000 gallons per year, which represents no more than an estimated 330 percent increase from

current waste oil generation. The Agency evaluated the impacts of the increased waste oil

generation for each regulatory option relative to the estimated current industry waste oil

generation. The increase in waste oil generation is attributed to the removal of oil from TEC

wastewaters prior to discharge to publicly owned treatment works or surface waters. This

increase reflects a transfer of oil from the wastewater to a more concentrated waste oil, and does

not reflect an increase in overall oil generation at TEC sites.
Section 11.0 - Non-Water Quality Impacts

For those references included in the administrative record supporting the TECI rulemaking, the document control 1

number (DCN) is included in parentheses at the end of the reference.

11-6

EPA assumes, based on responses to the Detailed Questionnaire, that waste oil will

be disposed via oil reclamation or fuels blending on or off site. Therefore, the Agency does not

estimate any adverse effects from increased waste oil generation.

11.4 References1

1. Eastern Research Group, Inc. Summary of the Results of Non-Water Quality

Impacts Analyses. April 2000 (DCN T20537).

2. U.S. Department of Commerce. 1990 Annual Survey of Manufacturers, Statistics

for Industry Groups and Industries. M90 (AS)-1, March 1992.

3. U.S. Environmental Protection Agency, Office of Air Quality Planning and

Standards. Wastewater Treatment Compound Property Processor and Air

Emissions Estimator (WATER8), Version 4.0. U.S. Environmental Protection

Agency, Research Triangle Park, NC, May 1, 1995.

4. Eastern Research Group, Inc. WATER8 Analysis of Air Emission Impacts of

TECI Regulatory Options. May 1998 (DCN T04660).
Section 12.0 - Option Selection and Regulated Pollutants

12-1

12.0 OPTION SELECTION AND REGULATED POLLUTANTS

After EPA established technology options for each subcategory (see Section 8.0),

EPA estimated the cost of compliance for each option (see Section 9.0); the priority,

conventional, and non-conventional pollutant removals associated with each option (see Section

10.0); and the non-water quality environmental impacts associated with each option (see Section

11.0). EPA used the results of these analyses along with other factors identified in the Clean

Water Act to select the technology bases from which to base the final effluent limitations

guidelines and standards. This section discusses the factors considered and EPA’s rationale in

selecting technology options for BPT, BAT, BCT, NSPS, PSES, and PSNS. Owners or

operators of facilities subject to these regulations are not required to use the specific pollution

prevention and wastewater treatment technologies selected by EPA to establish effluent

limitations. Rather, a facility can choose to use any combination of pollution prevention and

wastewater treatment to comply with the limitations provided they are not achieved through

dilution.

All supporting economic and financial analyses can be found in the Final Economic

Analysis of Effluent Limitations Guidelines and Standards for the Transportation Equipment

Cleaning Category (1). Cost-effectiveness analyses can be found in the Final Cost-Effectiveness

Analysis of Effluent Limitations Guidelines and Standards for the Transportation Equipment

Cleaning Category (2).

EPA selected pollutants to regulate from the list of pollutants of interest that are

removed by each selected regulatory option (see Section 6.6). EPA also considered publiclyowned treatment works (POTW) pass through when selecting regulated pollutants for indirect

dischargers. The following topics are discussed in this section:

C Section 12.1: Option Selection for Direct Dischargers;

C Section 12.2: Option Selection for Indirect Dischargers;
Section 12.0 - Option Selection and Regulated Pollutants

12-2

C Section 12.3: Rationale for Selecting Regulated Pollutants;

C Section 12.4: Regulated Pollutants for Direct Dischargers; 

C Section 12.5: Regulated Pollutants for Indirect Dischargers (Including the

POTW Pass-Through Analysis); and

C Section 12.6: References.

12.1 Option Selection for Direct Dischargers

EPA analyzed BPT, BCT, BAT, and NSPS options for all subcategories. EPA’s

option selection rationale is provided in the following subsections. Note that all costs are

presented in 1998 dollars.

12.1.1 Truck/Chemical & Petroleum

EPA evaluated two options for the Truck/Chemical & Petroleum Subcategory as

discussed in Section 8.2.1. EPA established BPT limits for the Truck/Chemical & Petroleum

Subcategory based on Option 2. EPA’s decision to base BPT limitations on Option 2 treatment

primarily reflects on two factors: 1) the degree of effluent reductions attainable, and 2) the total

cost of the treatment technologies in relation to the effluent reductions achieved. 

Agency data indicate that a treatment train consisting of physical/chemical

treatment for the removal of metals and toxics, biological treatment for the removal of

decomposable organic material, and activated carbon adsorption for the removal of residual

organics represents the average of the best treatment in the industry. EPA also selected Option 2

because all of the model facilities have equalization, coagulation/clarification, biological treatment,

and activated carbon adsorption in place. Two of the three model facilities in the cost model have

sufficient treatment in place; therefore, compliance costs for these facilities include only additional

monitoring. The third facility was costed for flow reduction, sludge dewatering, and monitoring,
Section 12.0 - Option Selection and Regulated Pollutants

12-3

which results in a net cost savings for the facility’s entire treatment train. These net cost savings

for the third facility are greater than the monitoring costs incurred by the other two facilities.

No basis could be found for identifying different BPT limitations based on age,

size, process, or other engineering factors. Neither the age nor the size of the TEC facility will

directly affect the treatability of the TEC wastewaters. 

EPA determined that Option 2 is economically achievable because it will result in a

net cost savings to the industry, and will not cause any facility closures, revenue impacts, or

employment impacts. Therefore, EPA based BAT on Option 2.

EPA did not identify any technologies beyond BPT/BAT that can achieve greater

removals of conventional or toxic pollutants. Therefore, EPA established BCT and NSPS

equivalent to BPT and BAT.

12.1.2 Rail/Chemical & Petroleum

EPA evaluated three options for the Rail/Chemical & Petroleum Subcategory as

discussed in Section 8.2.2. EPA established BPT limits for the Rail/Chemical & Petroleum

Subcategory based on Option 2. EPA’s decision to base BPT limitations on Option 2 treatment

primarily reflects on two factors: 1) the degree of effluent reductions attainable, and 2) the total

cost of the treatment technologies in relation to the effluent reductions achieved. 

EPA evaluated the costs, loads, and impacts of the one model direct discharging

facility which currently operates oil/water separation, equalization, pH adjustment, biological

treatment, and a filter press. EPA estimates that the cost of implementing Option 1 is for

monitoring costs only (i.e., zero capital costs), totaling approximately $4,900 annually post-tax

($7,600 pre-tax). Option 2 costs $40,800 annualized post-tax ($59,000 pre-tax), and Option 3

costs $60,600 annualized post-tax ($89,000 pre-tax).
Section 12.0 - Option Selection and Regulated Pollutants

12-4

EPA did not have sampling data for direct dischargers in this subcategory. EPA

has therefore relied on treatment data transferred from the Barge/Chemical & Petroleum

Subcategory to establish limits for conventionals (see Section 12.4.2), and treatment data from

indirect dischargers in the Rail/Chemical & Petroleum Subcategory to establish limits for toxic

pollutants (see Section 12.4.2). Furthermore, all toxic parameters considered for regulation were

treated to the same level at Options 1, 2, and 3. Although EPA believes that the treatment in

place at the one rail direct discharging facility identified by EPA is sufficient to meet the final

limitations (see Section 2.0), EPA has decided to establish BPT based on Option 2, which

includes dissolved air flotation (DAF). EPA believes that this is the most appropriate technology

because the data set used to transfer limits (from both the rail indirect discharging facilities and

the barge direct discharging facilities) includes DAF treatment.

No basis could be found for identifying different BPT limitations based on age,

size, process, or other engineering factors. Neither the age nor the size of the TEC facility will

directly affect the treatability of the TEC wastewaters. 

EPA determined that Option 2 is economically achievable because it will not cause

the facility to close or any revenue or employment impacts. Therefore, EPA based BAT on

Option 2.

EPA evaluated Option 3 as a BCT candidate technology to determine whether it

was cost-reasonable according to the BCT Cost Test. The option did not pass the BCT Cost

Test; therefore, EPA established BCT equivalent to BPT.

Due to the incremental economic impacts projected at Option 3 (see reference 1

for additional information), EPA believes that Option 3 may create a barrier to entry for new

sources. In addition, few additional pollutant removals are achieved by Option 3. Therefore,

EPA decided to establish NSPS equivalent to BPT, BAT, and BCT.
Section 12.0 - Option Selection and Regulated Pollutants

12-5

12.1.3 Barge/Chemical & Petroleum

EPA evaluated two options for the Barge/Chemical & Petroleum Subcategory as

discussed in Section 8.2.3. EPA established BPT limits for the Barge/Chemical & Petroleum

Subcategory based on Option 1. EPA’s decision to base BPT limitations on Option 1 treatment

primarily reflects on two factors: 1) the degree of effluent reductions attainable, and 2) the total

cost of the treatment technologies in relation to the effluent reductions achieved. 

EPA estimates that the annualized costs for Option 1 are $89,500 ($146,300 pretax) and Option 2 are $345,700 ($540,900 pre-tax). EPA estimates that both Option 1 and

Option 2 remove 19,300 pounds of BOD and TSS. Based on the treatment technologies in place

at the model facilities, coupled with the biological treatment system upgrades estimated by EPA

to achieve Option 1 performance levels (see Section 9.2.9), EPA predicts that Option 2 would not

result in any additional removal of toxic pounds because most pollutants are already treated to

very low levels, often approaching or below non-detect levels.

Additionally, the Agency concluded that reverse osmosis is not commonly used in

the industry. Therefore, Option 2 does not represent the average of the best treatment.

No basis could be found for identifying BPT limitations based on age, size,

process, or other engineering factors. Neither the age nor the size of the TEC facility will directly

affect the treatability of TEC wastewaters.

EPA also analyzed the costs of all options to determine the economic impact that

this regulation would have on the TECI. EPA’s assessment showed that implementation of

Option 1 is projected to result in no facility closures and no employment losses (see reference 1

for additional information). Therefore, EPA based BAT on Option 1.
Section 12.0 - Option Selection and Regulated Pollutants

12-6

EPA evaluated Option 2 as a BCT candidate technology to determine whether it

was cost-reasonable according to the BCT Cost Test. The option did not pass the BCT Cost

Test; therefore, EPA established BCT equivalent to BPT.

EPA also established NSPS equivalent to BPT, BAT, and BCT because few

additional pollutant removals are achieved by Option 2.

12.1.4 Food 

EPA evaluated two options for the Food Subcategory as discussed in Section

8.2.4. EPA established BPT limitations for the Food Subcategory based on Option 2. EPA’s

decision to base BPT limitations on Option 2 treatment primarily reflects on two factors: 1) the

degree of effluent reductions attainable, and 2) the total cost of the treatment technologies in

relation to the effluent reductions achieved. 

The wastewater generated by the Food Subcategory contains high loadings of

biodegradable organics and few toxic pollutants. Based on the data collected by EPA, raw

wastewater contained significant levels of organic material, exhibiting an average BOD5

concentration of 3,500 mg/L. Therefore, EPA concluded that some form of biological treatment

is necessary to reduce potential impacts to receiving waters from direct discharging facilities. All

existing facilities that responded to the Screener Questionnaire indicated that they have a

biological treatment system in place. Accordingly, EPA considers Option 2 to represent the

average of the best treatment and based BPT on Option 2.

EPA projects no additional pollutant removals and no additional costs to the

industry based on EPA’s selection of Option 2 because all facilities identified by EPA currently

have the selected technology in place. 
Section 12.0 - Option Selection and Regulated Pollutants

12-7

EPA did not establish BAT for the Food Subcategory because EPA found that

food grade facilities discharge very few pounds of toxic pollutants not amenable to treatment by a

biological treatment system.

EPA did not identify any technologies beyond BPT that can achieve greater

removals of conventional pollutants. Therefore, EPA established BCT equivalent to BPT.

Finally, for the same reasons EPA established BCT equivalent to BPT, and did not

establish BAT for this subcategory, EPA established NSPS equivalent to BPT.

12.1.5 Truck/Hopper and Rail/Hopper

EPA was not able to identify any direct discharging facilities in the Truck/Hopper

and Rail/Hopper subcategories; therefore, EPA has not established effluent limitations for direct

dischargers for these subcategories. Permit writers can more appropriately control discharges

from these facilities, if any, using best professional judgement. 

12.1.6 Barge/Hopper

EPA evaluated one option for the Barge/Hopper Subcategory as discussed in

Section 8.2.5. EPA did not establish BPT, BCT, BAT, or NSPS regulations for this subcategory

because hopper facilities discharge very few pounds of conventional or toxic pollutants. EPA

sampling data showed that very little wastewater is generated from cleaning the interiors of

hopper tanks due to the dry nature of bulk materials transported. Therefore, EPA determined that

nationally applicable regulations are unnecessary for this subcategory. Direct dischargers will

remain subject to limitations established by permit writers on a case-by-case basis using best

professional judgement.
Section 12.0 - Option Selection and Regulated Pollutants

12-8

12.2 Indirect Discharging Options

EPA analyzed PSES and PSNS options for all subcategories. EPA’s option

selection rationale is provided in the following subsections. Note that all costs are presented in

1998 dollars.

12.2.1 Truck/Chemical & Petroleum

EPA evaluated three options for the Truck/Chemical & Petroleum Subcategory as

discussed in Section 8.6.1. EPA also considered a pollution prevention approach as a compliance

option as discussed in Section 8.6.6. EPA established PSES for the Truck/Chemical & Petroleum

Subcategory based on a pollution prevention compliance option as well as a traditional

compliance option (i.e., a set of numeric pretreatment standards) based on Option 1. EPA

believes that pollution prevention and effective pollutant management is an appropriate and

effective way of reducing pollutant discharges from this subcategory. Further, the Agency

believes that providing a pollution prevention compliance option may be less costly than the

technology options considered for regulation. Therefore, EPA provided both a pollution

prevention option based on development and implementation of a Pollutant Management Plan

(PMP) and a set of numeric limits allowing facility owners and operators to choose the less

expensive compliance alternative. For the portion of the industry that already has extensive

treatment in place, it may be more cost effective to comply with the numeric limits. Conversely,

for those facilities already utilizing good pollution prevention practices and/or operating in

accordance with a PMP, it may be more cost effective to use the pollution prevention compliance

alternative.

For establishing numeric pretreatment standards, EPA’s decision to base PSES

limitations on Option 1 treatment primarily reflects on three factors: 1) the degree of effluent

reductions attainable, 2) the total cost of the treatment technologies in relation to the effluent

reductions achieved, and 3) economic impacts. 
Section 12.0 - Option Selection and Regulated Pollutants

12-9

Option A would have a post-tax annualized cost of $5.2 million ($8.1 million pretax) for 286 facilities. Option 1 would cost $9.2 million ($14.4 million pre-tax) and Option 2

would cost $20.9 million ($32.9 million pre-tax) annualized. Option A is projected to remove

1,500 toxic pound-equivalents, while Option 1 removes 11,700 and Option 2 removes 20,900

toxic pound-equivalents. EPA predicts that, if selected, Option 2 would not result in any

significant additional benefits incremental to Option 1 because the additional toxic poundequivalents removed by Option 2 are mainly due to pollutants that would not be selected for

regulation (see Section 12.5).

These toxic pound-equivalents estimates do not include any credit for reductions

of a number of pesticides, herbicides, or other toxic agents that may be present in TEC

wastewater at some facilities but that were not found at the time of EPA’s sampling. According

to the detailed questionnaire responses, EPA found that over 3,000 types of cargos are cleaned at

tank truck facilities. However, absent better estimates, EPA based its analysis on those toxic

substances that were confirmed present by its sampling protocols.

EPA projects that there will be no adverse economic impacts for any option when

a positive cost pass through assumption is made. However, EPA has also looked at the

assumption of no cost pass through, which indicated that 14 facilities may experience financial

stress at Option 1, and that 22 facilities may experience financial stress at Option 2. At Option 1,

none of the 14 facilities experiencing financial stress are small businesses; at Option 2, 7 of the 22

facilities are small businesses (see reference 1 for additional information).

EPA does not believe that the lower cost of Option A demonstrated significant

removals of toxics to justify its selection as a regulatory option. Option A was considerably less

cost effective than Option 1 (see reference 2 for additional information). Additionally, EPA

agrees with a pretreatment authority that accepts TEC wastewater who has argued that oil/water

separation alone is not effective for achieving concentration standards for the pollutants that may

be discharged by tank cleaning operations. The pretreatment authority also indicated its support

for effective pollution prevention practices as an alternative to numeric limits for these facilities. 
Section 12.0 - Option Selection and Regulated Pollutants

12-10

EPA believes that a dual approach, which offers facilities a choice between

pollution prevention and compliance with numeric limits based on Option 1, is economically

achievable and will significantly reduce pollutant loadings. EPA has also made a finding of no

barrier to entry associated with Option 1 level of control for new sources; therefore, EPA

established PSES and PSNS based on a dual approach involving a pollution prevention

compliance option and traditional limits based on Option 1 technologies.

12.2.2 Rail/Chemical & Petroleum

EPA evaluated three options for the Rail/Chemical & Petroleum Subcategory as

discussed in Section 8.6.2. EPA also considered a pollution prevention approach as a compliance

option as discussed in Section 8.6.6. EPA established PSES for the Rail/Chemical & Petroleum

Subcategory based a pollution prevention compliance option as well as a traditional compliance

option based on Option 2. EPA has determined that a Pollutant Management Plan is an

appropriate compliance alternative to the numerical pretreatment standards for the Rail/Chemical

and Petroleum Subcategory. EPA believes this Pollutant Management Plan alternative is

consistent with the CWA and the Pollution Prevention Act of 1990; it is comparable to the

numerical standards in terms of pollutant removal and costs incurred by facilities; is economically

achievable; and will allow an appropriate level of flexibility to facility owners and operators on

how to best achieve a reduction in pollutants being discharged to the POTW. For establishing

numeric pretreatment standards, EPA’s decision to base PSES limitations on Option 2 treatment

primarily reflects on three factors: 1) the degree of effluent reductions attainable, 2) the total cost

of the treatment technologies in relation to the effluent reductions achieved, and 3) economic

impacts. 

EPA estimates that Option 1 would have an annualized cost of $0.60 million

($0.90 million pre-tax), Option 2 would cost $1.0 million ($1.5 million pre-tax), and Option 3

would cost $1.6 million ($2.5 million pre-tax). EPA also considered the cost effectiveness to

evaluate the relative efficiency of each option in removing toxic pollutants. Option 1 is projected

to remove 6,600 toxic-pound equivalents, Option 2 removes 7,300 toxic-pound equivalents, and
Section 12.0 - Option Selection and Regulated Pollutants

12-11

Option 3 removes 7,800 toxic-pound equivalents. EPA predicts that, if selected, Option 3 would

not result in significant additional benefits incremental to Option 2 because the additional toxic

pound-equivalents removed by Option 3 are due to pollutants that would not be selected for

regulation (see Section 12.5). 

EPA considered selecting Option 1; however, EPA shares the concerns of a

pretreatment authority that accepts TEC wastewater that oil/water separation alone is not

sufficient pretreatment for the pollutants in Rail/Chemical & Petroleum Subcategory wastewaters. 

Additionally, EPA is concerned about any discrepancy in selected options for the rail and truck

facilities because treatment options should be similar for facilities that potentially compete with

each other.

Option 2, which is analogous to PSES Option 1 in the Truck/Chemical &

Petroleum Subcategory, achieves a significant reduction in toxic loadings and results in no

closures, financial stress, or revenue impacts. 

EPA established PSNS equivalent to PSES because EPA does not predict

significant additional pollutant removals by Option 3, and EPA does not believe that the higher

costs for Option 3 justify its selection for pretreatment standards for new sources.

12.2.3 Barge/Chemical & Petroleum

EPA evaluated three options for the Barge/Chemical & Petroleum Subcategory as

discussed in Section 8.6.3. EPA did not propose PSES for this subcategory, but is promulgating

PSES for the Barge/Chemical & Petroleum Subcategory based on Option 2 for the reasons

discussed below.

 

EPA proposed Option 2 for PSNS. EPA did not propose PSES for the

Barge/Chemical & Petroleum Subcategory because EPA identified only one facility discharging to

a POTW. However, since the proposal, EPA has identified four facilities that previously
Section 12.0 - Option Selection and Regulated Pollutants

12-12

discharged directly to surface waters and have since either switched or plan to switch discharge

status. EPA now estimates that there are five facilities that discharge wastewater to a POTW.

EPA evaluated the treatment in place and levels of control currently achieved by

the model indirect discharging Barge/Chemical & Petroleum facilities. EPA was able to evaluate

effluent discharge concentrations of BOD and oil & grease from all of these model facilities and

TSS from two model facilities (EPA did not have the data to evaluate the discharge

concentrations of other parameters). Based on the discharge concentrations of these conventional

pollutants, EPA believes that all model indirect discharging facilities are meeting the levels of

control that would be established under PSES at Option 2. Although EPA does not establish

technology-based pretreatment standards for conventional pollutants, EPA believes that these

parameters demonstrate a level of control similar to the technology options for PSES at Option 2,

and that the effluent concentrations of other pollutants of interest also would be controlled

similarly.

Therefore, EPA estimates that the cost of implementing PSES standards equivalent

to Option 2 would be solely for increased monitoring costs, totaling approximately $67,000

annually. EPA believes that all indirect discharging facilities have sufficient treatment in place to

prevent pass through or interference and are predicted to meet standards that would be

established under PSES. EPA predicts that there would be no incremental removals or benefits

associated with establishing PSES standards. 

In addition, EPA evaluated the pass through of pollutants regulated under BAT. 

As was discussed at proposal for establishment of PSNS, and in the Notice of Availability for

SGT-HEM, EPA found that a number of pollutants would in fact pass through a POTW based on

BAT treatment. Due to the pass through of a number of pollutants, and due to the number of

facilities that have switched discharge status since proposal, EPA concluded that it should

establish PSES based on Option 2. EPA believes that PSES is necessary in order to establish

similar levels of control for direct and indirect dischargers, and especially to establish similar levels

of control for those facilities that may decide to switch discharge status.
Section 12.0 - Option Selection and Regulated Pollutants

12-13

As noted under NSPS for the Barge/Chemical & Petroleum Subcategory, EPA

believes that Option 3, which includes reverse osmosis treatment, would not result in a significant

reduction of toxic pollutants because most pollutants are already treated to very low levels based

on Option 2 level of control. Option 2 was demonstrated to treat many regulated pollutants to

effluent levels approaching the detection limit. EPA has therefore decided to establish PSNS

based on Option 2.

12.2.4 Food

EPA evaluated two options for PSES for the Food Subcategory as discussed in

Section 8.6.4. This evaluation also considered the types and concentrations of pollutants found in

raw wastewaters in this subcategory. As expected, food grade facilities do not discharge

significant quantities of toxic pollutants to POTWs. In addition, conventional pollutants present

in the wastewater were found at concentrations that are amenable to treatment at a POTW. As a

result, EPA did not establish PSES or PSNS for the Food Subcategory due to the low levels of

toxic pollutants discharged by facilities in this subcategory. 

12.2.5 Truck/Hopper, Rail/Hopper, and Barge/Hopper

EPA evaluated one option for PSES for the Truck/Hopper, Rail/Hopper, and

Barge/Hopper Subcategories as discussed in Section 8.6.5. This evaluation also considered the

types and concentrations of pollutants found in raw wastewaters for these subcategories. EPA

estimates that 42 indirect discharging hopper facilities discharge a total of 3.5 toxic-pound

equivalents to the nation’s waterways, or less than one toxic-pound equivalent per facility. 

Additionally, EPA estimates that the total cost to the industry to implement PSES would be

greater than $350,000 annually. EPA did not consider the estimated costs to control the

discharge of these small amounts of pound equivalents to be reasonable. 

EPA also evaluated the levels of pollutants in raw wastewaters and determined that

none were present at levels expected to cause inhibition of the receiving POTW. 
Section 12.0 - Option Selection and Regulated Pollutants

12-14

Based on these factors, EPA did not establish PSES or PSNS for the

Truck/Hopper, Rail/Hopper, or Barge/Hopper Subcategories. 

12.3 Rationale for Selecting Regulated Pollutants

EPA selected a subset of pollutants for which to establish numerical effluent

limitations from the list of pollutants of interest for each regulated subcategory (see Section 6.6

for details on the pollutants of interest). Due to the wide range of cargos transported in tanks

cleaned by TEC facilities it would be very difficult to establish numerical limitations for all of the

pollutants that may be found in TECI wastewaters. Additionally, monitoring for all pollutants of

interest is not necessary to ensure that TECI wastewater pollution is adequately controlled, since

many of the pollutants originate from similar sources, have similar treatabilities, and are expected

to be removed by the same mechanisms and treated to similar levels.

Therefore, rather than set effluent limitations for all pollutants detected in EPA’s

wastewater characterization and wastewater treatment effectiveness sampling episodes, EPA

attempted to select a group of pollutants that were frequently detected in TECI wastewater and

whose control through a combination of physical and chemical treatment processes would lead to

the control of a wide range of pollutants with similar properties. Compounds selected for

regulation were chosen to be representative of the various groups of compounds found to be

effectively treated in each of the regulated subcategories. Specific compounds selected vary for

each of the subcategories, but include compounds from various groups including metals,

conventionals, and organics. Organic compounds were selected to be representative of the

various groups of organic compounds detected (hydrocarbons, organohalogens, carboxylic acid

derivatives, phthalic acid esters, etc.). In addition, special consideration was given to priority

pollutants that were detected at treatable levels and were demonstrated to be effectively removed

were selected for regulation.
Section 12.0 - Option Selection and Regulated Pollutants

12-15

Pollutants were selected for regulation based on the following criteria:

C EPA selected pollutants that were detected most frequently in TECI

wastewater. Generally, this meant that a pollutant had to be detected at

least four times in wastewater characterization samples for the

Truck/Chemical & Petroleum and Barge/Chemical & Petroleum

Subcategories, and at least three times in the Rail/Chemical & Petroleum

Subcategory. Priority pollutants that were effectively removed and were

present at significant concentrations in wastewaters, but were not detected

at the frequencies described above, were also considered for regulation.

C EPA selected pollutants that were detected at significant concentrations in

raw wastewater at those facilities sampled for treatment performance. 

Generally, the average pollutant concentration in raw wastewater had to be

at least 10 times the method detection limit (MDL) to be considered for

regulation. Priority pollutants that were effectively removed and that were

detected frequently in the industry, but whose average concentration was

less than 10 times the MDL, were also considered for regulation.

C EPA did not select pesticides or herbicides for regulation.

C EPA did not select dioxins or furans for regulation.

C EPA did not select chemicals that are used in wastewater treatment

operations of the selected treatment technology option.

C EPA did not select pollutant parameters that were not considered toxic.

C EPA selected pollutants that were removed by the selected treatment

technology option by at least 50 percent.

EPA did not select pesticides, herbicides, dioxins, or furans for regulation in any

subcategory for three reasons. First, these pollutants were generally found at very low levels in

raw wastewater. Second, the treatment technologies sampled by EPA were found to remove

these pollutants from the wastewater. The treatment technologies in each subcategory treated

most pesticides, herbicides, dioxins, and furans to low levels in the effluent. Third, compliance

monitoring costs for these pollutants are prohibitively expensive for the TECI. Therefore, EPA

has determined that it is unnecessary to set nationally-applicable discharge standards for specific

pesticides, herbicides, dioxins, and furans.
Section 12.0 - Option Selection and Regulated Pollutants

12-16

EPA also did not establish limits for phenol in any subcategory. Based on the

small number of direct dischargers present in the industry, EPA feels that local permitting

authorities can decide whether establishing discharge limitations based on water quality

considerations is appropriate. For indirect dischargers, phenol is readily biodegradable and is not

expected to pass through a POTW.

EPA determined that COD from TEC wastewater is adequately treated in a POTW

and does not pass through. Therefore, EPA did not select COD for regulation for indirect

dischargers. EPA also believes that COD regulation is unnecessary for direct dischargers due to

the control of other conventionals, including BOD, TSS, and oil and grease.

For direct discharging facilities, EPA is regulating the conventional pollutant oil

and grease (HEM) but is not regulating the nonconventional pollutant non-polar material (SGTHEM). The analysis for HEM quantifies both petroleum-based oils and greases as well as edible

oils from vegetables or fish. SGT-HEM, however, quantifies only the petroleum-based fraction. 

EPA believes it is unnecessary to select both HEM and SGT-HEM for regulation because the

petroleum component present in the wastewater is a subset of the total oil and grease

measurement. EPA therefore concluded that establishing effluent limitations for both oil and

grease and SGT-HEM would be redundant for direct discharging facilities.

Based on the methodology described above, EPA feels that it has selected

pollutants for regulation in each subcategory that will provide adequate control of the wide range

of pollutants that may be found in TECI wastewaters.

12.4 Regulated Pollutants for Direct Dischargers

EPA selected regulated pollutants for the Truck/Chemical & Petroleum

Subcategory, Rail/Chemical & Petroleum Subcategory, Barge/Chemical & Petroleum

Subcategory, and Food Subcategory. The specific regulated pollutants for each subcategory are

discussed in the following subsections.
Section 12.0 - Option Selection and Regulated Pollutants

12-17

12.4.1 Truck/Chemical & Petroleum

EPA established BPT, BCT, BAT, and NSPS limitations for the Truck/Chemical

& Petroleum Subcategory. The following pollutants and pollutant parameters were not selected

for regulation because they are not present at treatable concentrations or are not likely to cause

toxic effects: adsorbable organic halides (AOX), fluoride, nitrate/nitrite, total phosphorus, total

phenols, surfacants (MBAS), total organic carbon (TOC), total dissolved solids (TDS), alphaterpineol, benzene, benzoic acid, benzyl alcohol, chloroform, 1,2-dichlorobenzene, dimethyl

sulfone, n-decane, n-triacontane, o-cresol, p-cresol, p-cymene, trichloroethene, 2-

methylnaphthalene, 2-chlorophenol, 2-isopropylnaphthalene, boron, phosphorus, silicon, tin, and

titanium.

The following pollutants were not selected for regulation because they are

commonly used in the industry as wastewater treatment chemicals: aluminum, iron, and

manganese.

The following pollutants were not selected for regulation because they are likely to

be volatilized in the treatment system and are therefore not considered to be treated by the 

selected technology: acetone, 1,2-dichloroethane, ethylbenzene, methyl ethyl ketone, methyl

isobutyl ketone, methylene chloride, tetrachloroethene, toluene, 1,1,1-trichloroethane, m-xylene,

o-+p-xylene, and naphthalene.

The following pollutant was determined to be present in TEC wastewater due to

source water contamination, and was therefore not selected as a pollutant to regulate: zinc.

The following pollutant was not selected for regulation because EPA believes that

its sampling data is not representative of the practices that may be performed by tank truck

facilities and because EPA has insufficient data to evaluate the effectiveness of industry-supplied

sampling data: chromium.
Section 12.0 - Option Selection and Regulated Pollutants

12-18

The following pollutants were not selected for regulation because they are

controlled through the regulation of other pollutants: bis(2-ethylhexyl)phthalate, di-n-octyl

phthalate, n-docosane, n-dodecane, n-eicosane, n-hexacosane, n-hexadecane, n-octadecane, ntetracosane, n-tetradecane, and styrene.

The following pollutants were not selected for regulation because the treatment

system did not demonstrate removals of at least 50%: 2,4,6-trichlorophenol, cadmium, calcium,

magnesium, molybdenum, nickel, potassium, sodium, strontium, sulfur, ammonia as nitrogen, and

chloride.

EPA is regulating BOD , TSS, oil and grease (HEM), pH, copper, and mercury. 5

12.4.2 Rail/Chemical & Petroleum

EPA established BPT, BCT, BAT, and NSPS limitations for the Rail/Chemical &

Petroleum Subcategory. The following pollutants and pollutant parameters were not selected for

regulation because they are not present at treatable concentrations or are not likely to cause toxic

effects: adsorbable organic halides (AOX), ammonia as nitrogen, nitrate/nitrite, surfacants

(MBAS), total dissolved solids (TDS), total organic carbon (TOC), total phenols, total

phosphorus, acetone, anthracene, barium, benzoic acid, carbazole, chromium, copper, dimethyl

sulfone, ethylbenzene, fluoride, o-+p-xylene, 1-methylphenanthrene, naphthalene, n-octacosane,

p-cresol, phosphorus, pyrene, styrene, titanium, n-triacontane, zinc, and 2,4-diaminotoluene.

The following pollutants were not selected for regulation because they are

commonly used in the industry as wastewater treatment chemicals: aluminum and iron.

The following pollutant was not selected for regulation because it is likely to be

volatilized in the treatment system and is therefore not considered to be treated by the selected

technology: m-xylene.
Section 12.0 - Option Selection and Regulated Pollutants

12-19

The following pollutants were not selected for regulation because they are

controlled through the regulation of other pollutants: n-docosane, n-dodecane, n-eicosane, nhexacosane, n-hexadecane, n-octadecane, n-tetracosane, and n-tetradecane.

The following pollutants were not selected for regulation because the treatment

systems did not demonstrate removals of at least 50%: arsenic, boron, calcium, chloride, hexanoic

acid, magnesium, manganese, potassium, silicon, sodium, and sulfur. 

EPA is regulating BOD5, TSS, oil and grease (HEM), pH, fluoranthene, and

phenanthrene.

12.4.3 Barge/Chemical & Petroleum

EPA established BPT, BCT, BAT, and NSPS limitations for the Barge/Chemical

& Petroleum Subcategory. The following pollutants and pollutant parameters were not selected

for regulation because they were present only in trace amounts, are not present at treatable

concentrations, or are not likely to cause toxic effects: adsorbable organic halides (AOX),

ammonia as nitrogen, nitrate/nitrite, surfacants (MBAS), total dissolved solids, total organic

carbon (TOC), total phenols, total phosphorus, acenaphthylene, acrylonitrile, anthracene, benzoic

acid, calcium, chloride, chloroform, fluoride, hexavalent chromium, methylene chloride,

molybdenum, 2,3-benzofluorene, n-octacosane, osmium, ruthenium, phosphorus, potassium,

silicon, sodium, strontium, sulfur, and titanium.

The following pollutants were not selected for regulation because they are

commonly used in the industry as wastewater treatment chemicals: aluminum, iron, magnesium,

and manganese.

The following pollutants were not selected for regulation because they are likely to

be volatilized in the treatment system and are therefore not considered to be treated by the

selected technology: acetone, benzene, ethylbenzene, methyl ethyl ketone, methyl isobutyl ketone,
Section 12.0 - Option Selection and Regulated Pollutants

12-20

toluene, m-xylene, o-+p-xylene, acenaphthene, biphenyl, fluorene, naphthalene, phenanthrene, and

styrene.

The following pollutants were not selected for regulation because they are

controlled through the regulation of other pollutants: bis(2-ethylhexyl)phthalate, 3,6-

dimethylphenanthrene, n-hexacosane, n-hexadecane, 1-methylfluorene, 2-methylnaphthalene, 1-

methylphenanthrene, pentamethylbenzene, di-n-octyl phthalate, n-decane, n-docosane, ndodecane, n-eicosane, n-octadecane, n-tetracosane, n-tetradecane, p-cymene, and pyrene.

The following pollutant was not selected for regulation because the treatment

system did not demonstrate removals of at least 50%: boron.

EPA is regulating BOD , TSS, oil and grease (HEM), pH, cadmium, chromium, 5

copper, lead, mercury, nickel, and zinc.

12.4.4 Food

EPA established BPT, BCT, and NSPS limitations for the Food Subcategory for

BOD , TSS, oil and grease (HEM), and pH. 5

12.5 Regulated Pollutants for Indirect Dischargers

Section 307(b) of the CWA requires the Agency to promulgate pretreatment

standards for existing sources (PSES) and new sources (PSNS). To establish pretreatment

standards, EPA must first determine whether each BAT pollutant under consideration passes

through a POTW, or interferes with the POTW’s operation or sludge disposal practices.

The Agency evaluated POTW pass through for the TEC pollutants of interest for

all subcategories where EPA is regulating priority and nonconventional pollutants. In determining

whether a pollutant is expected to pass through a POTW, the Agency compared the nation-wide
Section 12.0 - Option Selection and Regulated Pollutants

12-21

average percentage of a pollutant removed by well-operated POTWs with secondary treatment to

the percentage of a pollutant removed by BAT treatment systems. A pollutant is determined to

“pass through” a POTW when the average percentage removal achieved by a well-operated

POTW (i.e., those meeting secondary treatment standards) is less than the percentage removed by

the industry’s direct dischargers that are using the selected BAT technology.

The approach to the definition of pass-through satisfies two competing objectives

set by Congress: 1) the wastewater treatment performance for indirect dischargers be equivalent

to that for direct dischargers, and 2) that the treatment capability and performance of the POTW

be recognized and taken into account in regulating the discharge of pollutants from indirect

dischargers. Rather than compare the mass or concentration of pollutants discharged by the

POTW with the mass or concentration of pollutants discharged by a BAT facility, EPA compares

the percentage of the pollutants removed by the BAT treatment system with the POTW removal. 

EPA takes this approach because a comparison of mass or concentration of pollutants in a POTW

effluent to pollutants in a BAT facility’s effluent would not take into account the mass of

pollutants discharged to the POTW from non-industrial sources, nor the dilution of the pollutants

in the POTW effluent to lower concentrations from the addition of large amounts of nonindustrial wastewater. 

To establish the performance of well-operated POTWs, EPA primarily compiled

POTW percent-removal data from previous effluent guidelines rulemaking efforts, which have

established national POTW percent-removal averages for a broad list of pollutants. These

guidelines have used the information provided in “The Fate of Priority Pollutants in Publicly

Owned Treatment Works,” commonly referred to as the 50 POTW Study. For those pollutants

not found in the 50 POTW Study, EPA used data from EPA’s National Risk Management

Research Laboratory’s (RREL) treatability database. These studies were discussed previously in

Section 3.0.

To perform the TEC pass-through analysis, EPA used percent removal rates

generated for the rulemaking efforts from the Metal Products and Machinery (MP&M) Industry
Section 12.0 - Option Selection and Regulated Pollutants

12-22

(3), the Centralized Waste Treatment (CWT) Industry (4), the Industrial Laundries Industry (5),

and the Pesticide Manufacturing Industry (6). EPA used POTW removal data from the 50 POTW

study, the RREL database, and the rulemaking efforts listed above to compile the POTW

removals used for the TECI (7).

For indirect dischargers, EPA did not conduct the pass through analysis on the

conventional pollutant oil and grease because of a POTW’s ability to treat the non-petroleum

based oils and greases, such as animal fats and vegetable oils. EPA instead conducted the passthrough analysis only on SGT-HEM. SGT-HEM quantifies the petroleum-based fraction of oil

and grease which may not be treated as effectively in a POTW as with the BAT treatment

technology. In order to determine removal rates for SGT-HEM, EPA used data submitted by the

County Sanitation Districts of Los Angeles County resulting in a percent removal estimate of 74

percent (8). EPA established pretreatment standards for SGT-HEM in cases where EPA

demonstrated that the selected BAT treatment technology will achieve greater removals of SGTHEM than a POTW. In these cases, EPA believes that SGT-HEM has been demonstrated to pass

through and that it is a good indicator parameter for a number of nonconventional pollutants.

Based on the criteria described above, EPA selected pollutants for regulation for

indirect dischargers for each of the regulated subcategories. Note that the Agency has chosen not

to regulate indirect dischargers in the Food, Truck/Hopper, Rail/Hopper, and Barge/Hopper

Subcategories.

The following sections give the results of the pass-through analysis for each

subcategory. The pass-through analysis was not conducted for the conventional pollutants

(BOD5, TSS, pH, and oil and grease) that are regulated for direct dischargers because

conventional pollutants are not regulated under PSES and PSNS. Pollutants in each subcategory

and technology option that were demonstrated to pass through a POTW were selected for

regulation. The results of the pass-through analysis for the Truck/Chemical & Petroleum,

Rail/Chemical & Petroleum, and Barge/Chemical & Petroleum Subcategories are listed in Tables

12-1, 12-2, and 12-3.
Section 12.0 - Option Selection and Regulated Pollutants

12-23

12.5.1 Truck/Chemical & Petroleum

EPA established PSES and PSNS limitations for the Truck/Chemical & Petroleum

Subcategory. Based on the pass-through analysis, EPA determined that the following pollutants

passed through a POTW and were therefore selected for regulation: copper, mercury, and SGTHEM.

12.5.2 Rail/Chemical & Petroleum

EPA established PSES and PSNS limitations for the Rail/Chemical & Petroleum

Subcategory. Based on the pass-through analysis, EPA determined that the following pollutants

passed through a POTW and were therefore selected for regulation: SGT-HEM, phenanthrene, 

and fluoranthene.

12.5.3 Barge/Chemical & Petroleum

EPA established PSES and PSNS limitations for the Barge/Chemical & Petroleum

Subcategory. Based on the pass-through analysis, EPA determined that the following pollutants

passed through a POTW and were therefore selected for regulation: SGT-HEM, cadmium,

chromium, copper, lead, mercury, nickel, and zinc. 

12.6 References

1. U.S. Environmental Protection Agency. Final Economic Analysis of Effluent

Limitations Guidelines and Standards for the Transportation Equipment Cleaning

Category. EPA 821-R-00-013, June 2000.

2. U.S. Environmental Protection Agency. Final Cost-Effectiveness Analysis of

Effluent Limitations Guidelines and Standards for the Transportation Equipment

Cleaning Category. EPA 821-R-00-014, June 2000. 
Section 12.0 - Option Selection and Regulated Pollutants

12-24

3. U.S. Environmental Protection Agency. Development Document for Proposed

Effluent Limitations Guidelines and Standards for the Metals Products and

Machinery Phase I Point Source Category. EPA 821-R-95-021, April 1995. 

4. U.S. Environmental Protection Agency. Development Document for Proposed

Effluent Limitations Guidelines and Standards for the Centralized Waste

Treatment Industry. EPA 821-R-95-006, January 1995.

5. U.S. Environmental Protection Agency. Development Document for Proposed

Pretreatment Standards for Existing and New Sources for Industrial Laundries

Point Source Category. EPA 821-R-97-007, November, 1997.

6. U.S. Environmental Protection Agency. Development Document for Effluent

Limitations Guidelines and New Source Performance Standards for Pesticide

Chemical Manufacturers. EPA 821-R-93-016, September 1993.

7. U.S. Environmental Protection Agency. Final POTW Pass-Through Analysis for

the TECI. April 2000 (DCN T20534).

8. 64 FR 38870 (DCN 20477).
Section 12.0 - Option Selection and Regulated Pollutants

12-25

Table 12-1

Pass-Through Analysis for the Truck/Chemical & Petroleum Subcategory

Pollutant Percent Removal Percent Removal Pass Through

Average BAT Average POTW

Copper 87 84 Yes

Mercury 94 90 Yes

Table 12-2

Pass-Through Analysis for the Rail/Chemical & Petroleum Subcategory

Pollutant Percent Removal Percent Removal Pass Through

Average BAT Average POTW

Fluoranthene 92 42 Yes

Phenanthrene 97 95 Yes

Table 12-3

Pass-Through Analysis for the Barge/Chemical & Petroleum Subcategory

Pollutant Percent Removal Percent Removal Pass Through

Average BAT Average POTW

Cadmium 97 90 Yes

Chromium 98 80 Yes

Copper 98 84 Yes

Lead 95 77 Yes

Mercury 98 90 Yes

Nickel 96 51 Yes

Zinc 93 80 Yes
Section 13.0 - Implementation of Effluent Limitations Guidelines and Standards

13-1

13.0 IMPLEMENTATION OF EFFLUENT LIMITATIONS GUIDELINES AND

STANDARDS

A permit writer must first determine if a facility is subject to the Transportation

Equipment Cleaning (TEC) regulation by evaluating its tank cleaning operations, including the

tank types cleaned, cargo types cleaned, and annual wastewater discharge volume. This section is

intended to provide guidance to permit writers and TEC facilities on how the TEC rule will be

applied and implemented.

Indirect discharging facilities in the Truck/Chemical and Petroleum and

Rail/Chemical and Petroleum subcategories subject to the TECI regulation will need to make an

initial choice on how to comply with the regulation. They will need to choose to either comply

with numerical effluent limitations guidelines and standards or agree to develop and comply with

an enforceable pollution prevention alternative, referred to as the Pollutant Management Plan. 

Direct discharging facilities must comply with numerical effluent limitations guidelines and

standards. 

Section 13.1 discusses and provides examples of facilities that are excluded from

the TEC rule. Section 13.2 discusses implementation of numerical effluent limitations and

pretreatment standards and provides examples of how these are applied. Section 13.3 discusses

implementation of the Toxics Management Plan. 

In addition, EPA is preparing a Permit Guidance Document to provide further

assistance to the industry and the permitting/control authorities implementing this rule. (A copy

may be obtained by writing to the EPA Office of Water Resource Center (RC-4100), 401 M

Street, SW, Washington, DC, 20460, or by calling 202-260-7786.)
Section 13.0 - Implementation of Effluent Limitations Guidelines and Standards

13-2

13.1 Facilities Excluded from the TECI Regulation

EPA has provided in the rule a low-flow exclusion for facilities that generate less

than 100,000 gallons per year of TEC process wastewater (§442.1(b)(3)). Section 13.1.1 

provides an example of how the low flow exclusion is applied. Note that the definition of TEC

process wastewater (§442.2) specifically excludes wastewater generated from cleaning tank

interiors for the purposes of maintenance and repair.

EPA has provided an exclusion for wastewaters associated with tank cleanings

operated in conjunction with other industrial, commercial, or publicly-owned treatment works

(POTW) operations, provided that the cleaning is limited to tanks that previously contained raw

materials, by-products and finished products that are associated with the facility’s on-site

processes. On-site means the contiguous and non-contiguous established boundaries of a facility. 

Sections 13.1.2 and 13.1.3 provide examples of application of this exclusion.

A TEC facility may accept wastewater from off site and still be considered a TEC

facility as long as the wastewater from off site also meets the definition of TEC process

wastewater. If a TEC facility accepts wastewater from off site that is not generated from other

tank cleaning activities, that facility may be considered a centralized waste treater (CWT) and may

have to meet limitations applicable to the CWT industry.

The TEC effluent limitations are not applicable to wastewater generated from

cleaning drums and intermediate bulk containers; however, EPA recognizes that many facilities

that will be subject to the TEC effluent limitations also clean these types of containers. Section

13.1.4 provides guidance in applying the TEC effluent limitations for these facilities.

13.1.1 Low Flow Exclusion - Unregulated Wastewater

Example 1: An indirect discharging TEC facility cleans rail tank cars for both

shipping products and repair. The facility discharges an average of 360,000 gallons of wastewater
Section 13.0 - Implementation of Effluent Limitations Guidelines and Standards

13-3

per year and performs an average of 360 cleanings per year. All tanks last transported chemical

and petroleum cargos. According to facility records, approximately 75% of all cleanings are

performed for the purpose of maintenance and repair on the tank, with the remainder performed

for the purpose of shipping. The facility operates year round.

By definition, only 25% of the facility’s total average annual wastewater flow,

90,000 gallons per year, is considered TEC process wastewater. This facility qualifies for the low

flow exclusion because it discharges less than 100,000 gallons per year of TEC process

wastewater, and is therefore not subject to TEC effluent limitations. Facilities discharging less

than 100,000 gallons per year of TEC process wastewater will remain subject to limitations and

standards established on a case-by-case basis using Best Professional Judgement by the permitting

authority.

13.1.2 Manufacturing Facility Covered by Another Point Source Category

Example 2: A chemical manufacturer, subject to the Organic Chemicals, Plastics,

and Synthetic Fibers (OCPSF) effluent guideline (40 CFR 414), manufacturers bulk organic

chemicals for sale and distribution. The facility holds a NPDES permit with limitations based on

40 CFR 414.71 and 414.73. In addition to manufacturing chemicals, the facility transports

chemicals in tank trucks and occasionally cleans the interiors of tank trucks when changing cargos

for delivery. Based on data collected over the previous five years, the greatest number of tank

trucks cleaned in a given year is 200 tanks, and the average is 178 tanks. The average annual

volume of tank cleaning wastewater discharged is 140,000 gallons. Tank cleaning wastewater is

combined with chemical manufacturing wastewater (14 millions gallons per year) for treatment in

the facility’s on-site treatment facility. The facility operates 365 days per year.

As specified in §442.1(b)(1), the TECI effluent guidelines do not apply to

“wastewater associated with tank cleanings operated in conjunction with other

industrial...operations, provided that the cleaning is limited to tanks that previously contained raw

materials, by-products, or finished products that are associated with the facility’s on-site
Section 13.0 - Implementation of Effluent Limitations Guidelines and Standards

13-4

processes.” Although this facility is not subject to 40 CFR 442, wastewater discharges from tank

truck cleaning may be permitted under 40 CFR 414 or any other applicable point source category.

13.1.3 Manufacturing Facility Not Covered by Another Point Source Category

Example 3: A grape juice processing facility cleans tank trucks that contained

processed juice. The facility discharges to a local POTW and is not required to monitor their

effluent discharges. The facility cleans (on average) 350 tank trucks per year and discharges

1,000 gallons of wastewater per tank cleaning. Wastewater is generated from interior, exterior,

and equipment and floor washings. The facility also discharges over 5,000 gallons per day of

wastewater from juice processing. All waste streams are commingled prior to discharge, without

pretreatment. The facility operates 350 days per year.

This facility is not currently subject to another point source category, but generates

a significant volume of tank cleaning wastewater, 350,000 gallons per year. However, as

described in §442.1(b)(1), the TECI effluent guidelines do not apply to “wastewater associated

with tank cleanings operated in conjunction with other industrial...operations, provided that the

cleaning is limited to tanks that previously contained raw materials, by-products, or finished

products that are associated with the facility’s on-site processes.” Therefore, this facility is not

subject to 40 CFR 442. The facility may be subject to local pretreatment limits as necessary to

prevent pass-through or interference.

Example 4: An inorganic chemical manufacturer operates a distribution center

100 miles from its main facility where all chemicals are manufactured. The facility mainly

operates as a chemical distributor (e.g., unloading and loading products), but it also cleans tank

trucks for change of cargo. The wastewater generated from tank cleaning is not currently

covered by a point source category, and is discharged to a local POTW without pretreatment. 

The distributor cleans an average of 600 tank trucks per year and discharges 210,000 gallons of

tank cleaning wastewater per year. The facility has no other significant sources of process

wastewater. The distributor operates 180 days per year.
Section 13.0 - Implementation of Effluent Limitations Guidelines and Standards

13-5

As described in §442.1(b)(1), the TECI effluent guidelines do not apply to

“wastewater associated with tank cleanings operated in conjunction with other industrial,

commercial, or POTW operations, provided that the cleaning is limited to tanks that previously

contained raw materials, by-products, or finished products that are associated with the facility’s

on-site processes.” EPA has provided a revised definition for “on-site” that includes contiguous

and non-contiguous property within the established boundary of a facility. 

EPA believes its exclusion for other industrial, commercial, or POTW facilities

allows the permitting authority a considerable amount of discretion in determining if the tank

cleanings are performed as part of, or in addition to, the facilities on-site processes. In this

example, the permit writer may exercise flexibility in setting local limitations and may determine

that the TEC effluent limitations would be appropriate for use as the basis of the permit.

13.1.4 Facility That Cleans Tanks and IBCs

Example 5: A direct discharging TEC facility cleans tank trucks and intermediate

bulk containers (IBCs) last containing chemical or petroleum cargos. The facility cleans 4,500

tank trucks per year and 1,800 IBCs per year. The facility discharges an average of 270 gallons

of wastewater per tank truck or IBC cleaned. The facility operates 350 days per year.

Discharges from this facility are subject to §442.11, §442.12, and §442.13 for the

Truck/Chemical & Petroleum Subcategory. As stated under §442.1(b)(2), wastewater resulting

from the cleaning of IBCs is not covered by 40 CFR 442; however, permit writers, using Best

Professional Judgement, may provide a pollutant discharge allowance for non-categorical

wastewater discharges such as IBC cleaning. EPA assumes that a permit writer would give this

facility an allowance for the IBC cleanings since the facility cleans a significant number of IBCs

each day and they may contribute significant pollutant loadings in the raw and treated wastewater. 

As a conservative estimate, a permit writer could assume that the wastewater characteristics from

cleaning a tank truck are similar to that of cleaning an IBC. 
Section 13.0 - Implementation of Effluent Limitations Guidelines and Standards

13-6

13.2 Numerical Effluent Limitations

Using the effluent limitations guidelines and standards, the permitting authority will

establish numerical discharge limitations for the facility and specify monitoring and reporting

requirements. For direct discharging facilities, the effluent limitation guidelines are applicable to

the final effluent discharged to U.S. surface waters. For indirect discharging facilities,

pretreatment standards are applicable to the final effluent discharged to a POTW. This section

provides guidance and examples on how the TECI effluent guidelines will be implemented. 

Compliance monitoring should be performed on a frequency basis established by

the permitting authority. EPA’s monitoring costs for this regulation assumed compliance

monitoring for conventional pollutants four times per month, and for priority and nonconventional pollutants once per month. 

13.2.1 Single Subcategory Facility

Example 6: An indirect discharging TEC facility cleans rail tank cars that last

transported fuel oil, lube oil, and sulfuric acid. The facility cleans 20 tanks per day and discharges

an average of 10.4 million gallons of TEC process wastewater per year. The facility operates 260

days per year.

This facility’s wastewater discharges are subject to Subpart B - Rail Tank Cars

Transporting Chemical & Petroleum Cargos, Pretreatment Standards for Existing Sources (PSES)

(§442.25). This facility would be required to monitor for SGT-HEM, fluoranthene, and

phenanthrene and must comply with the following end-of-pipe discharge limitations:

Pollutant Maximum Daily Concentration (mg/L) 

SGT-HEM 26

Fluoranthene 0.076

Phenanthrene 0.34
CT

'

j

N

i'1

CiFi

j

N

i'1

Fi

FT& FD

FT

Section 13.0 - Implementation of Effluent Limitations Guidelines and Standards

13-7

13.2.2 Multiple Subcategory Facility

Example 7: An indirect discharging TEC facility cleans the interiors of tank

trucks and rail tank cars. A wide range of cargos is cleaned, but all cargos are classified as

chemical or petroleum (as defined in §442.2). The facility cleans, on average, 10 tank trucks and

3 rail cars per day. On average, the facility discharges 500 gallons of TEC process wastewater

per tank truck cleaned and 2,000 gallons of TEC process wastewater per rail tank car cleaned. 

The facility also commingles into its treatment system 20 gallons per day of boiler blowdown. 

The facility operates 300 days per year.

This facility’s wastewater discharge is subject to both Subpart A - Tank Trucks

and Intermodal Tank Containers Transporting Chemical & Petroleum Cargos, PSES (§442.15)

and Subpart B - Rail Tank Cars Transporting Chemical & Petroleum Cargos, PSES (§442.25). A

permit writer would use the combined waste stream formula in Equation 1, set forth in 40 CFR

403.6(e), to establish effluent limitations. Note that the boiler blowdown waste stream is the only

dilute waste stream at this facility.

(1)

where:

C = Alternative concentration limit for the combined wastestream, T

(mg/L)

C = Concentration limit for a pollutant in the regulated stream i, (mg/L) i

F = Average daily flow (at least a 30-day average) of regulated stream i, i

(gallons/day)

FD = Average daily flow (at least 30-day average) of dilute waste

stream(s), (gallons/day)
FA

' TPDA( GPT ' 10 ( 500 ' 5,000 gallons/day

FB' TPDB( GPT ' 3 ( 2,000 ' 6,000 gallons/day

CT'

0.84 ( 5,000

5,000

11,020 & 20

11,020

' 0.84 mg/L

Section 13.0 - Implementation of Effluent Limitations Guidelines and Standards

13-8

FT = Average daily flow (at least a 30-day average) through the

combined treatment facility (including regulated, unregulated, and

dilute waste streams), (gallons/day)

N = Total number of regulated streams

An example for calculating the copper limit is provided:

Average daily Subpart A flow:

Average daily Subpart B flow:

where:

F = Average daily flow (at least a 30-day average) of regulated stream,

(gallons/day)

TPD = Number of tanks cleaned per day, (tanks/day)

GPT = Gallons of TEC process wastewater generated per tank cleaned,

(gallons/tank)

The average daily flow through the combined treatment system is the sum of FA and F B plus the

boiler blowdown flow, or 11,020 gallons/ day. The maximum daily concentration limitation for

copper for Subpart A is 0.84 mg/L (from §442.15). Copper is not regulated for Subpart B and

this flow is considered an unregulated process flow. C for copper is calculated as: T

The same methodology would be used to establish pretreatment standards for all

pollutants regulated under §442.15 and/or §442.25 (SGT-HEM, mercury, fluoranthene, and

phenanthrene). SGT-HEM is the only pollutant regulated under both Subparts A and B. Because
CT

'

(26 ( 5,000) % (26 ( 6,000)

11,000

11,020 & 20

11,020

' 26 mg/L

Section 13.0 - Implementation of Effluent Limitations Guidelines and Standards

13-9

the SGT-HEM limitation is the same in both subparts (26 mg/L), C for SGT-HEM for this T

example facility is calculated as:

13.2.3 Regulated and Unregulated Wastewater at a Facility

Example 8: An indirect discharging TEC facility cleans tank barges containing a

variety of cargos, including petroleum and products such as gasoline, mineral spirits and xylene. 

The facility also cleans barge hoppers containing dry bulk cargos. The facility cleans a total of

165 tank barges per year and 1,120 hoppers per year. The facility discharges an average of 700

gallons of wastewater per barge hopper cleaned and 4,700 gallons of wastewater per chemical and

petroleum barge cleaned. The facility operates 280 days per year.

This facility’s wastewater discharge is subject to Subpart C - Tank Barges and

Ocean/Sea Tankers Transporting Chemical & Petroleum Cargos, PSES (§442.35). EPA has not

established PSES for the cleaning of barge hoppers. By definition, wastewater generated from

cleaning closed-top hoppers is not considered TEC process wastewater and is not covered by 40

CFR 442. This flow will remain subject to limitations and standards established on a case-by-case

basis using Best Professional Judgement by the permitting authority.

EPA found that hopper wastewater contains low levels of conventional and toxic

pollutants. Permit writers should evaluate unregulated streams to determine whether they actually

are acting as dilution. A local or state control authority can use its own legal authority to

establish a limit more stringent than would be derived using the combined waste stream formula. 

In this example, EPA assumes that a permit writer would not give this facility an allowance for

hopper cleanings and would consider it a dilution flow.
ANN ' TPY ( GPT ' 165 ( 4,700 ' 775,500 gallons/year

ANN ' TPY ( GPT ' 1,120 ( 700 ' 784,000 gallons/year

Fi'

ANN

DPY

'

775,500

280

' 2,770 gallons/day

Section 13.0 - Implementation of Effluent Limitations Guidelines and Standards

13-10

The annual volume of TEC process wastewater discharged by this facility is

calculated as follows:

where:

ANN = Annual TEC process wastewater flow, (gallons/year)

TPY = Number of tank barges cleaned per year (chemical and petroleum

only), (tanks/year)

GPT = Gallons of TEC process wastewater generated per tank cleaned,

(gallons/tank)

This facility does not qualify for the low flow exclusion because it discharges more than 100,000

gallons per year of TEC process wastewater.

The annual volume of wastewater generated from cleaning hoppers is:

A permit writer would use the combined waste stream formula (see Equation (1))

to establish PSES since only a portion of the facility’s discharge is subject to this rule. An

example for calculating CT for zinc is provided below. The maximum daily concentration

limitation for zinc for Subpart C is 8.3 mg/L (from §442.35).

Average daily Subpart C flow:

Average daily hopper flow (considered a dilution waste stream in this example):
FD

'

ANN

DPY

'

784,000

280

' 2,800 gallons/day

FT'

(165 ( 4,700) % (1,120 ( 700)

280

' 5,570 gallons/day

CT'

8.3 ( 2,770

2,770

5,570 & 2,800

5,570

' 4.1 mg/L

Section 13.0 - Implementation of Effluent Limitations Guidelines and Standards

13-11

where: 

F = Average daily flow (at least a 30-day average) of stream,

(gallons/day)

ANN = Annual wastewater flow, (gallons/year)

DPY = Number of operating days per year

The average daily flow through the combined treatment facility:

Alternative concentration limit:

The same methodology would be used to establish pretreatment standards for all pollutants

regulated under §442.35 (SGT-HEM, cadmium, chromium, copper, lead, mercury, nickel, and

zinc).

13.3 Pollutant Management Plan

The permitting authority will establish a pollution prevention allowable discharge

of wastewater pollutants, as defined in §442.2, if the facility agrees to a control mechanism or

pretreatment agreement as specified in the applicable subpart(s).
Section 14.0 - Analytical Methods

For example, the American Public Health Association publishes Standard Methods for the Examination of Water and 1

Wastewater.

14-1

14.0 ANALYTICAL METHODS

Section 304(h) of the Clean Water Act directs EPA to promulgate guidelines

establishing test procedures (analytical methods) for analyzing pollutants. These test procedures

are used to determine the presence and concentration of pollutants in wastewater, and are used

for submitting applications and for compliance monitoring under the National Pollutant Discharge

Elimination System (NPDES) found at 40 CFR Parts 122.41(j)(4) and 122.21(g)(7), and for the

pretreatment program found at 40 CFR 403.7(d). Promulgation of these methods is intended to

standardize analytical methods within specific industrial categories and across industries.

EPA has promulgated analytical methods for monitoring pollutant discharges at 40

CFR Part 136, and has promulgated methods for analytes specific to given industrial categories at

40 CFR Parts 400 to 480. In addition to the methods developed by EPA and promulgated at 40

CFR Part 136, certain methods developed by others have been incorporated by reference into 40 1

CFR Part 136.

EPA promulgated Method 1664, the analytical method for HEM and SGT-HEM,

on May 14, 1999 (see 64 FR 26315) to support phaseout of use of CFC-113. This rulemaking

revised 40 CFR 136 to list Method 1664 as an approved method to analyze oil and grease and

non-polar material (i.e., HEM and SGT-HEM). Note that EPA will allow continued use of

methods that use CFC-113 through the extension to the laboratory use exemption of CFC-113

through 2005; however, EPA strongly encourages dischargers/generators/industrial users and

permit authorities to substitute use of Method 1664 for CFC-113 methods. Method 1664 will be

used in EPA’s wastewater program for regulation development, permit applications, and

compliance monitoring. In anticipation of promulgation of Method 1664, data collected by EPA

in support of the TECI effluent guideline utilized Method 1664. Therefore, all effluent limitations
Section 14.0 - Analytical Methods

14-2

promulgated for oil and grease (HEM) and non-polar material (SGT-HEM) in this effluent

guideline are to be measured by Method 1664.

For this final rule, EPA is regulating certain conventional, priority, and

nonconventional pollutants as identified in Section 12.0. The methods proposed for monitoring

the regulated pollutants are briefly discussed in the following sections:

C Section 14.1: Semivolatile Organic Compounds;

C Section 14.2: Metals;

C Section 14.3: Hexane Extractable Material and Silica-Gel Treated Hexane

Extractable Material;

C Section 14.4: Biochemical Oxygen Demand; and

C Section 14.5: Total Suspended Solids.

Section 14.6 lists the references used in this section.

14.1 Semivolatile Organic Compounds

Semivolatile organic compounds are analyzed by EPA Method 1625, Revision C

(1). In this method, samples are prepared by liquid-liquid extraction with methylene chloride in a

separatory funnel or continuous liquid-liquid extractor. Separate acid and base/neutral extracts

are concentrated and analyzed by high resolution gas chromatography (HRGC) combined with

low resolution mass spectrometry (LRMS). The detection limit of the method is usually

dependent upon interferences rather than instrument limitations. With no interferences present,

minimum levels of 10, 20, or 50 μg/L (ppb) can be achieved, depending upon the specific

compound.
Section 14.0 - Analytical Methods

14-3

14.2 Metals

Metals are analyzed by EPA Method 1620 (2). This method is a consolidation of

the EPA 200 series methods for the quantitative determination of 27 trace elements by inductively

coupled plasma (ICP) and graphite furnace atomic adsorption (GFAA), and determination of

mercury by cold vapor atomic absorption (CVAA). The method also provides a semiquantitative

ICP screen for 42 additional elements. The ICP technique measures atomic emissions by optical

spectroscopy. GFAA measures the atomic absorption of a vaporized sample, and CVAA

measures the atomic absorption of mercury vapor. Method detection limits (MDLs) are

influenced by the sample matrix and interferences. With no interferences present, compoundspecific MDLs ranging from 0.1 to 75 Fg/L (ppb) can be achieved.

14.3 Hexane Extractable Material and Silica-Gel Treated Hexane Extractable

Material

Hexane Extractable Material (HEM; formerly known as oil and grease) and SilicaGel Treated Hexane Extractable Material (SGT-HEM) are analyzed by EPA Method 1664 (3). In

this method, a 1-L sample is acidified and serially extracted three times with n-hexane. The

solvent is evaporated from the extract and the HEM is weighed. For SGT-HEM analysis, the

HEM is redissolved in n-hexane and an amount of silica gel proportionate to the amount of HEM

is added to the HEM solution to remove adsorbable materials. The solution is filtered to remove

the silica gel, the solvent is evaporated, and the SGT-HEM is weighed. This method is capable of

measuring HEM and SGT-HEM in the range of 5 to 1,000 mg/L (ppm), and may be extended to

higher concentrations by analysis of a smaller sample volume.

14.4 Biochemical Oxygen Demand

Biochemical oxygen demand (BOD5) is a measure of the relative oxygen

requirements of wastewaters, effluents, and polluted waters. BOD5 is measured by EPA Method

405.1 (4). The BOD test specified in this method is an empirical bioassay-type procedure that 5
Section 14.0 - Analytical Methods

 For those references included in the administrative record supporting the TECI rulemaking, the document control 2

number (DCN) is included in parentheses at the end of the reference.

14-4

measures dissolved oxygen consumed by microbial life while assimilating and oxidizing the

organic matter present. The standard test conditions include dark incubation at 20EC for a fiveday period, and the reduction in dissolved oxygen concentration during this period yields a

measure of the biological oxygen demand. The practical minimum level of determination is 2

mg/L (ppm).

14.5 Total Suspended Solids

Total suspended solids (TSS) is measured using EPA Method 160.2 (4). In this

method, a well-mixed sample is filtered through a pre-weighed glass fiber filter. The filter is dried

to constant weight at 103 -105EC. The weight of material on the filter divided by the sample

volume is the amount of TSS. The practical range of the determination is 4 - 20,000 mg/L (ppm).

14.6 References2

1. U.S. Environmental Protection Agency. Method 1625, Revision C: Semivolatile

Organic Compounds by Isotope Dilution GCMS, June 1989 (DCN T10220).

2. U.S. Environmental Protection Agency. Method 1620: Metals by Inductively

Coupled Plasma Atomic Emission Spectroscopy and Atomic Absorption

Spectroscopy, September 1989 (DCN T10224).

3. U.S. Environmental Protection Agency. Method 1664, Revision A: n-Hexane

Extractable Material (HEM: Oil and Grease) and Silica Gel Treated n-Hexane

Extractable Material (SGT-HEM; Non-polar Material) by Extraction and

Gravimetry, EPA-821-R-98-002, February 1999. (DCN T20485).

4. U.S. Environmental Protection Agency. Methods for Chemical Analysis of Water

and Wastes, EPA-600/4-79-020, March 1983. (DCN T10228).
Section 15.0 - Glossary

15-1

15.0 GLOSSARY

Administrator - The Administrator of the U.S. Environmental Protection Agency.

Agency - The U.S. Environmental Protection Agency.

Ballast Water Treatment Facility - A facility which accepts for treatment ballast water or any

water which has contacted the interior of cargo spaces or tanks in an ocean/sea tanker.

Baseline Loadings - Pollutant loadings in TEC wastewater currently being discharged to POTWs

or U.S. surface waters. These loadings take into account wastewater treatment currently in place

at TEC facilities.

BAT - The best available technology economically achievable, as described in Sec. 304(b)(2) of

the Clean Water Act.

BCT - The best conventional pollutant control technology, as described in Sec. 304(b)(4) of the

Clean Water Act.

BMP - Best management practice. Section 304(e) of the Clean Water Act gives the

Administrator the authority to publish regulations to control plant site runoff, spills, or leaks,

sludge or waste disposal, and drainage from raw material storage.

BOD - Five day biochemical oxygen demand. A measure of biochemical decomposition of 5

organic matter in a water sample. It is determined by measuring the dissolved oxygen consumed

by microorganisms to oxidize the organic matter in a water sample under standard laboratory

conditions of five days and 20E C, see Method 405.1. BOD5 is not related to the oxygen

requirements in chemical combustion.

BPT - The best practicable control technology currently available, as described in Sec. 304(b)(1)

of the Clean Water Act.

Builder/Leaser - A facility that manufactures and/or leases tank trucks, closed-top hopper tank

trucks, intermodal tank containers, rail tank cars, closed-top hopper rank tank cars, tank barges,

closed-top hopper barges, and/or ocean/sea tankers, and that cleans the interiors of these tank

after equipment has been placed in service.

CAA - Clean Air Act. The Air Pollution Prevention and Control Act (42 U.S.C. 7401 et. seq.),

as amended, inter alia, by the Clean Air Act Amendments of 1990 (Public Law 101-549, 104 Stat.

2399).

Cargo - Any chemical, material, or substance transported in a tank truck, closed-top hopper

truck, intermodal tank container, rail tank car, closed-top hopper rail car, tank barge, closed-top
Section 15.0 - Glossary

15-2

hopper barge, ocean/sea tanker, or a similar tank that comes in direct contact with the chemical,

material, or substance. A cargo may also be referred to as a commodity.

Carrier-Operated (Carrier) - A facility that owns, operates, and cleans a tank fleet used to

transport commodities or cargos for other companies.

Centralized Waste Treater (CWT) - A facility that recycles, reclaims, or treats any hazardous

or nonhazardous industrial wastes received from off site.

Centralized Waste Treaters Effluent Guideline - see proposed 40 CFR Part 437, 60 FR 5464,

January 27, 1995.

CFR - Code of Federal Regulations, published by the U.S. Government Printing Office. A

codification of the general and permanent rules published in the Federal Register by the Executive

departments and agencies of the federal government.

Chemical Cargo - Chemical cargos include, but are not limited to, the following cargos: latex;

rubber; plastic; plasticizers; resins; soaps; detergents; surfactants; agricultural chemicals and

pesticides; hazardous waste; organic chemicals including: alcohols, aldehydes, formaldehydes,

phenols, peroxides, organic salts, amines, amides, other nitrogen compounds, other aromatic

compounds, aliphatic organic chemicals, glycols, glycerines, and organic polymers; refractory

organic compounds including: ketones, nitriles, organo-metallic compounds containing chromium,

cadmium, mercury, copper, zinc; and inorganic chemicals including: aluminum sulfate, ammonia,

ammonium nitrate, ammonium sulfate, and bleach. Cargos which are not considered to be

foodgrade, petroleum, or dry bulk goods are considered to be chemical cargos.

Classical Pollutants - A general term for parameters, including conventional pollutants, that are

commonly analyzed by a wet chemistry laboratory. Classical pollutants may also be referred to as

classical wet chemistry parameters. 

Classical Wet Chemistry Parameters- A general term for parameters, including conventional

pollutants, that are commonly analyzed by a wet chemistry laboratory. Classical wet chemistry

parameters may also be referred to as classical pollutants.

Closed-Top Hopper Rail Car - A completely enclosed storage vessel pulled by a locomotive

that is used to transport dry bulk commodities or cargos over railway access lines. Closed-top

hopper rail cars are not designed or contracted to carry liquid commodities or cargos and are

typically used to transport grain, soybeans, soy meal, soda ash, lime, fertilizer, plastic pellets,

flour, sugar, and similar commodities or cargos. The commodities or cargos transported come in

direct contact with the hopper interior. Closed-top hopper rail cars are typically divided into three

compartments, carry the same commodity or cargo in each compartment, and are generally top

loaded and bottom unloaded. The hatch covers on closed-top hopper rail cars are typically

longitudinal hatch covers or round manhole covers.
Section 15.0 - Glossary

15-3

Closed-Top Hopper Truck - A motor-driven vehicle with a completely enclosed storage vessel

used to transport dry bulk commodities or cargos over roads and highways. Closed-top hopper

trucks are not designed or constructed to carry liquid commodities or cargos and are typically

used to transport grain, soybeans, soy meal, soda ash, lime, fertilizer, plastic pellets, flour, sugar,

and similar commodities or cargos. The commodities or cargos transported come in direct

contact with the hopper interior. Closed-top hopper trucks are typically divided into three

compartments, carry the same commodity or cargo in each compartment, and are generally top

loaded and bottom unloaded. The hatch covers used on closed-top hopper trucks are typically

longitudinal hatch covers or round manhole covers. Closed-top hopper trucks are also commonly

referred to as dry bulk hoppers.

Closed-Top Hopper Barge - A non-self-propelled vessel constructed or adapted primarily to

carry dry commodities or cargos in bulk through rivers and inland waterways, and may

occasionally carry commodities or cargos through oceans and seas when in transit from one inland

waterway to another. Closed-top hopper barges are not designed to carry liquid commodities or

cargos and are typically used to transport corn, wheat, soy beans, oats, soy meal, animal pellets,

and similar commodities or cargos. The commodities or cargos transported come in direct

contact with the hopper interior. The basic types of tops on closed-top hopper barges are

telescoping rolls, steel lift covers, and fiberglass lift covers.

COD - Chemical oxygen demand. A nonconventional, bulk parameter that measures the oxygenconsuming capacity of refractory organic and inorganic matter present in water or wastewater. 

COD is expressed as the amount of oxygen consumed from a chemical oxidant in a specific test,

see Methods 410.1 through 401.4.

Commercial TEC Facility - A TEC facility that performs 50 percent of their cleanings for

commercial customers. Many of these facilities perform 90 percent or more commercial

cleanings.

Commodity - Any chemical, material, or substance transported in a tank truck, closed-top hopper

truck, intermodal tank container, rail tank car, closed-top hopper rail car, tank barge, closed-top

hopper barge, ocean/sea tanker, or similar tank that comes in direct contact with the chemical,

material, or substance. A commodity may also be referred to as a cargo.

Consignee - Customer or agent to whom commodities or cargos are delivered.

Contract Hauling - The removal of any waste stream from the facility by a company authorized

to transport and dispose of the waste, excluding discharges to sewers of surface waters.

Conventional Pollutants - The pollutants identified in Sec. 304(a)(4) of the Clean Water Act and

the regulations thereunder (i.e., biochemical oxygen demand (BOD ), total suspended solids 5

(TSS), oil and grease, fecal coliform, and pH).
Section 15.0 - Glossary

15-4

CWA - Clean Water Act. The Federal Water Pollution Control Act Amendments of 1972 (33

U.S.C. 1251 et seq.), as amended, inter alia, by the Clean Water Act of 1977 (Public Law 95-217)

and the Water Quality Act of 1987 (Public Law 100-4).

Daily Discharge - The discharge of a pollutant measured during any calendar day or any 24-hour

period that reasonably represents a calendar day.

Dairy Products Processing Effluent Guideline - see 40 CFR Part 405.

Detailed Questionnaire - The 1994 Detailed Questionnaire for the Transportation Equipment

Cleaning Industry.

Direct Capital Costs - One-time capital costs associated with the purchase, installation, and

delivery of a specific technology. Direct capital costs are estimated by the TECI cost model.

Direct Discharger - A facility that conveys or may convey untreated or facility-treated process

wastewater or nonprocess wastewater directly into surface waters of the United States, such as

rivers, lakes, or oceans. (See Surface Waters definition.)

Discharge - The conveyance of wastewater to: (1) United States surface waters such as rivers,

lakes, and oceans, or (2) a publicly-owned, privately-owned, federally-owned, centralized, or

other treatment works.

Drum - A metal or plastic cylindrical container with either an open-head or a tight-head (also

known as bung-type top) used to hold liquid, solid, or gaseous commodities or cargos which are

in direct contact with the container interior. Drums typically range in capacity from 30 to 55

gallons.

Dry Bulk Cargo - A cargo which includes dry bulk products such as fertilizers, grain, and coal

grain, soybeans, soy meal, soda ash, lime, fertilizer, plastic pellets, flour, sugar, and similar

commodities or cargos.

EA - Economic assessment. An analysis which estimates the economic impacts of compliance

costs on facilities, firms, employment, domestic and international market, inflation, distribution,

environmental justice, and transportation equipment cleaning customers.

Effluent - Wastewater discharges. 

Effluent Limitation - Any restriction, including schedules of compliance, established by a State

or the Administrator on quantities, rates, and concentrations of chemical, physical, biological, and

other constituents which are discharged from point sources into navigable waters, the waters of

the contiguous zone, or the ocean. (CWA Sections 301(b) and 304(b).)

Emission - Passage of air pollutants into the atmosphere via a gas stream or other means.
Section 15.0 - Glossary

15-5

EPA - The U.S. Environmental Protection Agency.

Facility - A facility is all contiguous and non-contiguous property within established boundaries

owned, operated, leased, or under the control of the same corporation or business entity. The

property may be divided by public or private right-of-way.

Federally-Owned Treatment Works (FOTW) - Any device or system owned and/or operated

by a United States Federal Agency to recycle, reclaim, or treat liquid sewage or liquid industrial

wastes.

Food Grade Cargo - Food grade cargos include edible and non-edible food products. 

Specific examples of food grade products include but are not limited to: alcoholic beverages,

animal by-products, animal fats, animal oils, caramel, caramel coloring, chocolate, corn syrup and

other corn products, dairy products, dietary supplements, eggs, flavorings, food preservatives,

food products that are not suitable for human consumption, fruit juices, honey, lard, molasses,

non-alcoholic beverages, salt, sugars, sweeteners, tallow, vegetable oils, vinegar, and pool water. 

FR - Federal Register, published by the U.S. Government Printing Office, Washington, D.C. A

publication making available to the public regulations and legal notices issued by federal agencies.

Hazardous Air Pollutants (HAPs) - Substances listed by EPA as air toxics under Section 112 of

the Clean Air Act.

Heel - Any material remaining in a tank or container following unloading, delivery, or discharge

of the transported cargo. Heels may also be referred to as container residue, residual materials or

residuals.

Hexane Extractable Material (HEM) - A method-defined parameter that measures the presence

of relatively nonvolatile hydrocarbons, vegetable oils, animal fats, waxes, soaps, greases, and

related materials that are extractable in the solvent n-hexane. See Method 1664. HEM is also

referred to as oil and grease.

Independent - A facility that provides cleaning services on a commercial basis, either as a

primary or secondary business, for tanks which they do not own or operate.

Indirect Capital Costs - One-time capital costs that are not technology-specific and are

represented as a multiplication factor that is applied to the direct capital costs estimated by the

TECI cost model.

Indirect Discharger - A facility that discharges or may discharge pollutants into a publiclyowned treatment works (POTW).

Industrial Waste Combusters Effluent Guidelines - see 40 CFR Part 444, FR 6518, January

27, 2000.
Section 15.0 - Glossary

15-6

In-house TEC Facility - A TEC facility that performs less than 50 percent of their cleanings for

commercial clients. In-house TEC facilities primarily clean their own transportation equipment

and have very few commercial clients. Most of these facilities perform less than 10 percent of

their total cleanings for commercial clients.

Inorganic Chemicals Manufacturing Effluent Guidelines - see 40 CFR Part 415.

Intermediate Bulk Container (IBC or Tote) - A completely enclosed storage vessel used to

hold liquid, solid, or gaseous commodities or cargos which are in direct contact with the tank

interior. Intermediate bulk containers may be loaded onto flat beds for either truck or rail

transport, or onto ship decks for water transport. IBCs are portable containers with 450 liters

(119 gallons) to 3,000 liters (793 gallons) capacity. IBCs are also commonly referred to as totes.

Intermodal Tank Container - A completely enclosed storage vessel used to hold liquid, solid, or

gaseous commodities or cargos which come in direct contact with the tank interior. Intermodal

tank containers may be loaded onto flat beds for either truck or rail transport, or onto ship decks

for water transport. Containers larger than 3,000 liters capacity are considered intermodal tank

containers. Containers smaller than 3,000 liters capacity are considered IBCs.

MP&M - Metal Products & Machinery Effluent Guidelines, new regulation to be proposed in

2000 (designated as 40 CFR Part 438).

New Source - As defined in 40 CFR 122.2 and 122.29, and 403.3(k), a new source is any

building, structure, facility, or installation from which there is or may be a discharge of pollutants,

the construction of which commenced (1) for purposes of compliance with New Source

Performance Standards, after the promulgation of such standards under CWA Section 306; or (2)

for the purposes of compliance with Pretreatment Standards for New Sources, after the

publication of proposed standards under CWA Section 307(c), if such standards are thereafter

promulgated in accordance with that section.

Nonconventional Pollutant - Pollutants other than those specifically defined as conventional

pollutants (identified in Section 304(a)(4) of the Clean Water Act) or priority pollutants

(identified in 40 CFR Part 423, Appendix A).

Nondetect Value - A concentration-based measurement reported below the sample-specific

detection limit that can reliably be measured by the analytical method for the pollutant.

Non-Polar Material - A method-defined parameter that measures the presence of mineral oils

that are extractable in the solvent n-hexane and not adsorbed by silica gel. See Method 1664. 

Non-polar material is also referred to as SGT-HEM.

Nonprocess Wastewater - Wastewater that is not generated from industrial processes or that

does not come into contact with process wastewater. Nonprocess wastewater includes, but is not

limited to, wastewater generated from restrooms, cafeterias, and showers.
Section 15.0 - Glossary

15-7

Non-Water Quality Environmental Impact - An environmental impact of a control or

treatment technology, other than to surface waters.

NPDES - The National Pollutant Discharge Elimination System authorized under Sec. 402 of the

CWA. NPDES requires permits for discharge of pollutants from any point source into waters of

the United States.

NRDC - Natural Resources Defense Council.

NSPS - New source performance standards, under Sec. 306 of the CWA.

Ocean/Sea Tanker - A self- or non-self-propelled vessel constructed or adapted to transport

commodities or cargos in bulk in cargo spaces (or tanks) through oceans and seas, where the

commodity or cargo carried comes in direct contact with the tank interior. There are no

maximum or minimum vessel or tank volumes.

OCPSF - Organic Chemicals, Plastics, and Synthetic Fibers Manufacturing Effluent Guideline,

see 40 CFR Part 414.

Off Site - “Off site” means outside the established boundaries of the facility.

Oil and Grease (O&G) - A method-defined parameter that measures the presence of relatively

nonvolatile hydrocarbons, vegetable oils, animal fats, waxes, soaps, greases, and related materials

that are extractable in either n-hexane (referred to as HEM, see Method 1664) or Freon 113

(1,1,2-trichloro-1,2,2-trifluoroethane, see Method 413.1). Data collected by EPA in support of

the TECI effluent guideline utilized Method 1664.

On Site - “On site” means within the established boundaries of the facility. 

Operating and Maintenance (O&M) Costs - All costs related to operating and maintaining a

treatment system for a period of one year, including the estimated costs for compliance

wastewater monitoring of the effluent. 

Petroleum Cargo - Petroleum cargos include the products of the fractionation or straight

distillation of crude oil, redistillation of unfinished petroleum derivatives, cracking, or other

refining processes. For purposes of this rule, petroleum cargos also include products obtained

from the refining or processing of natural gas and coal. Specific examples of petroleum products

include, but are not limited to: asphalt; benzene; coal tar; crude oil; cutting oil; ethyl benzene;

diesel fuel; fuel additives; fuel oils; gasoline; greases; heavy, medium, and light oils; hydraulic

fluids, jet fuel; kerosene; liquid petroleum gases (LPG) including butane and propane; lubrication

oils; mineral spirits; naphtha; olefin, paraffin, and other waxes; tall oil; tar; toluene; xylene; and

waste oil.

Petroleum Refining Effluent Guidelines - see 40 CFR Part 415.
Section 15.0 - Glossary

15-8

PNPL - Production Normalized Pollutant Loading. Untreated wastewater pollutant loading

generated per tank cleaning.

Point Source Category - A category of sources of water pollutants.

Pollutants of Interest - Pollutants that meet the following criteria are considered pollutants of

interest: detected two or more times in the subcategory raw wastewater characterization data or

one time for the Food, Truck/Hopper, Rail/Hopper, and Barge/Hopper Subcategories, and an

average treatment technology option influent concentration greater than or equal to five times

their analytical method detection limit. All pollutants of interest that were removed by the

technology bases were used in the environmental assessment and cost effectiveness analyses.

Pollution Prevention - The use of materials, processes, or practices that reduce or eliminate the

creation of pollutants or wastes. It includes practices that reduce the use of hazardous and

nonhazardous materials, energy, water, or other resources, as well as those practices that protect

natural resources through conversation or more efficient use. Pollution prevention consists of

source reduction, in-process recycle and reuse, and water conservation practices.

Post-Compliance Loadings - Pollutant loadings in TEC wastewater following implementation of

each regulatory option. These loadings are calculated assuming that all TEC facilities would

operate wastewater treatment technologies equivalent to the technology bases for the selected

regulatory options.

POTW - Publicly-owned treatment works, as defined at 40 CFR 403.3(o).

PPA - Pollution Prevention Act. The Pollution Prevention Act of 1990 (42 U.S.C. 13101 et.

seq., Pub. Law 101-508), November 5, 1990.

Prerinse - Within a TEC cleaning process, a rinse, typically with hot or cold water, performed at

the beginning of the cleaning sequence to remove residual material (i.e., heel) from the tank

interior.

Presolve Wash - Use of diesel, kerosene, gasoline, or any other type of fuel or solvent as a tank

interior cleaning solution.

Pretreatment Standard - A regulation that establishes industrial wastewater effluent quality

required for discharge to a POTW. (CWA Section 307(b).)

Priority Pollutants - The pollutants designated by EPA as priority in 40 CFR Part 423, Appendix

A.

Privately-Owned Treatment Works - Any device or system owned and operated by a private

company that is used to recycle, reclaim, or treat liquid industrial wastes not generated by that

company.
Section 15.0 - Glossary

15-9

Process Wastewater - Any water which, during manufacturing or processing, comes into direct

contact with or results from the production or use of any raw material, intermediate product,

finished product, byproduct, or waste product.

PSES - Pretreatment standards for existing sources, under Sec. 307(b) of the CWA.

PSNS - Pretreatment standards for new sources, under Sec. 307(b) and (c) of the CWA.

Rail Tank Car - A completely enclosed storage vessel pulled by a locomotive that is used to

transport liquid, solid, or gaseous commodities or cargos over railway access lines. A rail tank

car storage vessel may have one or more storage compartments, and the stored commodities or

cargos come in direct contact with the tank interior. There are no maximum or minimum vessel

or tank volumes.

RCRA - Resource Conservation and Recovery Act (PL 94-580) of 1976, as amended (42 U.S.C.

6901, et. seq.).

RREL - U. S. Environmental Protection Agency, Office of Research and Development, Risk

Reduction Engineering Laboratory.

Screener Questionnaire - The 1993 Screener Questionnaire for the Transportation Equipment

Cleaning Industry.

Shipper-Operated (Shipper) - A facility that transports or engages a carrier for transport of

their own commodities or cargos and cleans the fleet used for such transport. Also included in

the scope of this definition are facilities which provide tank cleaning services to fleets that

transport raw materials to their location.

SIC - Standard industrial classification. A numerical categorization system used by the U.S.

Department of Commerce to catalogue economic activity. SIC codes refer to the products, or

group of products, produced or distributed, or to services rendered by an operating establishment. 

SIC codes are used to group establishments by the economic activities in which they are engaged. 

SIC codes often denote a facility's primary, secondary, tertiary, etc. economic activities.

Silica Gel Treated Hexane Extractable Material (SGT-HEM) - A method-defined parameter

that measures the presence of mineral oils that are extractable in the solvent n-hexane and not

adsorbed by silica gel. See Method 1664. SGT-HEM is also referred to as non-polar material.

Source Reduction - Any practice which reduces the amount of any hazardous substance,

pollutant, or contaminant entering any waste stream or otherwise released into the environment

prior to recycling, treatment, or disposal. Source reduction can include equipment or technology

modifications, process or procedure modifications, substitution of raw materials, and

improvements in housekeeping, maintenance, training, or inventory control.
Section 15.0 - Glossary

15-10

Surface Waters - Waters including, but not limited to, oceans and all interstate and intrastate

lakes, rivers, streams, mudflats, sand flats, wetlands, sloughs, prairie potholes, wet meadows,

playa lakes, and natural ponds.

Tank - A generic term used to describe any closed container used to transport commodities or

cargos. The commodities or cargos transported come in direct contact with the container interior,

which is cleaned by TEC facilities. Examples of containers which are considered tanks include: 

tank trucks, closed-top hopper trucks, intermodal tank containers, rail tank cars, closed-top

hopper rail cars, tank barges, closed-top hopper barges, ocean/sea tankers, and similar tanks. 

Containers used to transport pre-packaged materials are not considered tanks, nor are 55-gallon

drums or pails or intermediate bulk containers.

Tank Barge - A non-self-propelled vessel constructed or adapted primarily to carry commodities

or cargos in bulk in cargo spaces (or tanks) through rivers and inland waterways, and may

occasionally carry commodities or cargos through oceans and seas when in transit from one inland

waterway to another. The commodities or cargos transported are in direct contact with the tank

interior. There are no maximum or minimum vessel or tank volumes.

Tank Truck - A motor-driven vehicle with a completely enclosed storage vessel used to

transport liquid, solid or gaseous materials over roads and highways. The storage vessel or tank

may be detachable, as with tank trailers, or permanently attached. The commodities or cargos

transported come in direct contact with the tank interior. A tank truck may have one or more

storage compartments. There are no maximum or minimum vessel or tank volumes. Tank trucks

are also commonly referred to as cargo tanks or tankers.

TECI - Transportation Equipment Cleaning Industry.

TEC Process Wastewater - All wastewaters associated with cleaning the interiors of tanks

including: tank trucks; tank rail cars; intermodal tank containers; tank barges; and ocean/sea

tankers used to transport commodities or cargoes that come into direct contact with the interior

of the tank or container. At those facilities that clean tank interiors, TEC process wastewater

includes wastewater generated from washing vehicle exteriors, equipment and floor washings,

TEC-contaminated stormwater, wastewater pre-rinse cleaning solutions, chemical cleaning

solutions, and final rinse solutions. TEC process wastewater is defined to include only

wasterwater generated from a regulated TEC subcategory. Therefore, TEC process wastewater

does not include wastewater generated from cleaning hopper cars, or from food grade facilities

discharging to a POTW. Wastewater generated from cleaning tank interiors for purposes of

shipping products (i.e., cleaned for purposes other than maintenance and repair) is considered

TEC process wastewater. Wastewater generated from cleaning tank interiors for the purposes of

maintenance and repair on the tank is not considered TEC process wastewater. Facilities that

clean tank interiors solely for the purposes of repair and maintenance are not regulated under the

TEC rule.
Section 15.0 - Glossary

15-11

Total Annualized Cost - The sum of annualized total capital investment and O&M costs. Total

capital investment costs are annualized by spreading them over the life of the project. These

annualized costs are then added to the annual O&M costs.

Total Capital Investment - Total one-time capital costs required to build a treatment system

(i.e., sum of direct and indirect capital costs).

Tote - A completely enclosed storage vessel used to hold liquid, solid, or gaseous commodities or

cargos which come in direct contact with the vessel interior. Totes may be loaded onto flat beds

for either truck or rail transport, or onto ship decks for water transport. There are no maximum

or minimum values for tote volumes, although larger containers are generally considered to be

intermodal tank containers. Totes are also referred to as intermediate bulk containers or IBCs. 

Fifty-five gallon drums and pails are not considered totes.

Transportation Equipment Cleaning Facility - Any facility that generates wastewater from

cleaning the interior of tank trucks, closed-top hopper trucks, rail tank cars, closed-top hopper

rail cars, intermodal tank containers, tank barges, closed-top hopper barges, ocean/sea tankers,

and (excluding drums and intermediate bulk containers).

Treatment Effectiveness Concentration - Treated effluent pollutant concentration that can be

achieved by each treatment technology that is part of a TECI regulatory option. Treatment

effectiveness concentrations for each pollutant were developed for each treatment technology that

removed the pollutant by 50 percent or greater.

Treatment, Storage, and Disposal Facility (TSDF) - A facility that treats, stores, or disposes

hazardous waste in compliance with the applicable standards and permit requirements set forth in

40 CFR Parts 264, 265, 266, and 270.

TSS - Total suspended solids. A measure of the amount of particulate matter that is suspended in

a water sample. The measure is obtained by filtering a water sample of known volume. The

particulate material retained on the filter is then dried and weighed, see Method 160.2.

Untreated Loadings - Pollutant loadings in raw TEC wastewater. These loadings represent

pollutant loadings generated by the TECI, and do no account for wastewater treatment currently

in place at TEC facilities.

U.S.C. - The United States Code.

Zero Discharge Facility - A facility that does not discharge pollutants to waters of the United

States or to a POTW. Also included in this definition are discharge or disposal of pollutants by

way of evaporation, deep-well injection, off-site transfer to a treatment facility, and land

application.