This page intentionally left blank.Final Industrial Stormwater General Permit
– January 2, 2015 Page i 

### TABLE OF CONTENTS

SUMMARY OF PERMIT RE PORTS & SUBMITTALS ..............................................................1

SUMMARY OF REQUIRED ONSITE DOCUMENTATION ......................................................1

SPECIAL CONDITIONS ................................................................................................................3

S1. PERMIT COVERAGE ........................................................................................................3
A. Facilities Required to Seek Coverage under This General Permit ............................... 3
B. Significant Contributors of Pollutants .......................................................................... 5
C. Facilities Not Required to Obtain Coverage ................................................................. 5
D. Facilities Excluded from Coverage ............................................................................... 6
E. Discharges to Ground ................................................................................................... 7
F. Conditional "No Exposure" Exemption ........................................................................ 8

S2. APPLICATION FOR COVERAGE ....................................................................................8
A. Obtaining Permit Coverage ........................................................................................... 8
B. Modification of Permit Coverage ................................................................................. 8
C. Permit Coverage Timeline ............................................................................................ 9
D. Transfer of Permit Coverage ....................................................................................... 10

S3. STORMWATER POLLUTION PREVENTION PLAN (SWPPP) ..................................10
A. General Requirements ................................................................................................. 10
B. Specific SWPPP Requirements

................................ ................................................... 11

S4. GENERAL SAMPLING REQUIREMENTS

................................ ....................................19
A. General Requirements ................................................................................................. 19
B. Sampling Requirements .............................................................................................. 19
C. Analy tical Procedures for Sampling Requirements .................................................... 21
D. Laboratory Accreditation ............................................................................................ 22

S5. BENCHMARKS, EFFLUENT LIMITATIONS, AND SPECIFIC SAMPLING REQUIREMENTS .............................................................................................................22
A. Benchmarks and Sampling Requirements .................................................................. 22
B. Additional Sampling Requirements for Specific Industrial Groups ........................... 23
C. Landfills and Airports Subject to Effluent Limitation Guidelines .............................. 25
D. Conditionally Authorized Non- Stormwater Discharges ............................................. 27
E. Prohibited Discharges ................................................................................................. 28
F. General Prohibitions ................................................................................................... 28

S6. DISCHARGES TO IMPAIRED WATERS ......................................................................28
A. General Requirements for Discharges to Impaired Waters ........................................ 28
B. Eligibility for Coverage of New Discharges to Impaired Waters ............................... 29
C. Additional Sampling Requirements and Effluent Limits for Discharges to Certain Impaired Waters and Puget Sound Sediment Cleanup Sites ...................................... 29
D. Requirements for Discharges to Waters with Applicable TMDLs ............................. 34Final Industrial Stormwater General Permit
– January 2, 2015 Page ii S7. INSPECTIONS ..................................................................................................................35
A. Inspection Frequency and Personnel .......................................................................... 35
B. Inspection Components ............................................................................................... 35
C. Inspection Results ....................................................................................................... 35
D. Reports of Non-Compliance ....................................................................................... 36

S8. CORRECTIVE ACTIONS ................................................................................................36
A. Impleme ntation of Source Control and Treatment BMPs from Previous Permit ....... 36
B. Level One Corrective Actions – Operational Source Control BMPs ......................... 36
C. Level Two Corrective Actions – Structural Source Control BMPs ............................ 37
D. Level Three Corrective Actions
– Treatment BMPs .................................................. 37

S9. REPORT ING AND RECORDKEEPING .........................................................................39
A. Discharge Monitoring Reports .................................................................................... 39
B. Annual Reports ........................................................................................................... 40
C. Records Reten tion ....................................................................................................... 41
D. Additional Sampling by the Permittee ........................................................................ 41
E. Reporting Permit Violations ....................................................................................... 42
F. Public Access to SWPPP ............................................................................................ 43

S10. COMPLIANCE WITH STANDARDS .............................................................................43

S11. PERMIT FEES

................................ ................................ ...................................................44

S12. SOLID AND LIQUID WASTE MANAGEMENT ...........................................................44

S13. NOTICE OF TERMINATION (NOT) ..............................................................................44
A. Conditions for a NOT ................................................................................................. 44
B. Procedure for Obtaining Termination ......................................................................... 44

GENERAL CONDITIONS ...........................................................................................................45

G1. DISCHARGE VIOLATIONS ...........................................................................................45

G2. SIGNATORY REQUIREMENTS

................................ .....................................................45

G3. RI GHT OF INSPECTION AND ENTRY .........................................................................46

G4. GENERAL PERMIT MODIFICATION AND REVOCATION ......................................46

G5. REVOCATION OF COVERAGE UNDER THE PERMIT .............................................46

G6. REPORTING A CAUSE FOR MODIFICATION ............................................................47

G7. COMPLIANCE WITH OTHER LAWS AND STATUTES .............................................47

G8. DUTY TO REAPPLY .......................................................................................................47Final Industrial Stormwater General Permit
– January 2, 2015 Page iii G9. REMOVED SUBSTANCES .............................................................................................47

G10. DUTY TO PROVIDE INFORMATION ...........................................................................47

G11. OTHER REQUIREMENTS OF 40 CFR ...........................................................................48

G12. ADDITIONAL SAMPLING .............................................................................................48

G13. PENALTIES FOR VIOLATING PERMIT CONDITIONS .............................................48

G14. UPSET ...............................................................................................................................48

G15. PROPERTY RIGHTS ........................................................................................................49

G16. DUTY TO COMPLY ........................................................................................................49

G17. TOXIC POLLUTANTS

................................ ................................ .....................................49

G18. PENALTI ES FOR TAMPERING .....................................................................................49

G19. REPORTING PLANNED CHANGES .............................................................................49

G20. REPORTING OTHER INFORMATION ..........................................................................50

G21. REPORTING ANTICIPATED NON

- COMPLIANCE .....................................................50

G22. REQUESTS TO BE EXCLUDED FROM COVERAGE UNDER THE PERMIT ..........50

G23. APPEALS ..........................................................................................................................50

G24. SEVERABILITY ...............................................................................................................51

G25. BYPASS PROHIBITED ....................................................................................................51

APPENDIX 1
- ACRONYMS .......................................................................................................53

APPENDIX 2
- DEFINITIONS

................................ ................................ .....................................54

APPENDIX 3
- SWPPP CERTIFICATION FORM .....................................................................63

APPENDIX 4
- EXIST ING DISCHARGERS TO I MPAIRED WATERS ..................................64

APPENDIX 5
- DISCHARGERS SUBJECT TO TMDL REQUIREMENTS .............................64Final Industrial Stormwater General Permit
– January 2, 2015 Page 1 SUMMARY OF PERMIT REPORTS & SUBMITTALS

Permit
Section Submittal Frequency Due Date(s)

S1.F Conditional “No Exposure”
Certification Form As necessary As necessary , with renewals every 5 years
S2.B Application for Permit Coverage As necessary As necessary

S2.B. Request Modification of Permit Coverage As necessary As necessary

S2.D Request Transfer of Coverage As necessary As necessary

S8.D Level 3 Engineering Report As necessary May 15 th , prior to Level 3
deadline 1

S8.D Level 3 O&M Manual As necessary 30 days after Level 3 installation

S9.A Discharge Monitoring Reports (DMRs) 1/q uarter February 15 th ; May 15 th ; August 15 th ; November 15 th

S9.B Annual Report 1/year May 15 th

S9.C. SWPPP, if requested by Ecology Per Ecology request Within 14 days of request

S9. E Noncompliance Notification As necessary Within 30 days of noncompliance

event G8 Duty to Reapply 1/permit cycle July 3, 2019

SUMMARY OF REQUIRED ONSITE DOCUMENTATION 2

Permit Condition(s) Document Title

S3.A.4.a Stormwater Pollution Prevention Plan (SWPPP) 3

S9.B Cop ies of Annual Report s S9. C .1.a Copy of Permit
S9. C .1.b Copy of Permit Coverage Letter
S9. C.1.c Original Sampling Records (Field Notes and Laboratory Reports)
S7.C & S9.C.1.d Site Inspection Reports S9.C.1.j Copies of Discharge Monitoring Reports (DMRs)

1 Unless an alternate due date is specified in an order.

2 A complete list is contained in Condition S9.C. The Permittee shall make all plans, documents and records required

by this permit immediately available to Ecology or the local jurisdiction upon request

. 3 With signed and completed SW PPP Certification Form(s)
– see Appendix 3.Final Industrial Stormwater General Permit
– January 2, 2015 Page 2 This page intentionally left blank.S1.A

Final Industrial Stormwater General Permit
– January 2, 2015 Page 3 SPECIAL CONDITIONS

S1. PERMIT COVERAGE

A. Facilities Required to Seek Coverage under This General Permit

This statewide permit applies to facilities conducting industrial activities that discharge

stormwater to a surface waterbody or to a storm sewer system that drains to a surface

water body. Beginning on the effective date of this permit and lasting through its expiration date, the Permittee is authorized to discharge stormwater and conditionally approved non- stormwater discharges to waters of the state

. All discharge s and activities

aut horized by this permit shall be consistent with the terms and conditions of this permit.

The permit requires coverage for private entities, state, and local government facilities,
and includes existing facilities and new facilities

. Facilities conducting industrial
activities listed in Table 1 or referenced in S1.A.3 shall apply for coverage under this permit or apply for a Condition al No Exposure exemption , if eligible (Condition S1.F).
The Department of Ecolo gy (Ecology) may also require permit coverage for any facility

on a case

- by -case basis in order to protect waters of the state (Condition S1.B).

1. Facilities engaged in any industrial activities in Table 1 shall apply for coverage if

stormwater from the facility discharge s to a surface waterbody , or to a storm sewer system that discharge s to a surface waterbody

. The Standard Industrial Classification ( SIC) groups generally, but not always, associated with these activities are listed in
Table 1

. Table 1: Activities Requiring Permit Coverage and the Associated SIC Groups

Industrial Activities SIC Groups Metal Mining 10xx Coal Mining 12xx
Oil and Gas Extraction 13xx Mining and Quarrying of Nonmetallic Minerals, except Fuels (except facilities in SIC Codes 1411, 1422, 1423, 1429, 1442, 1446, 1445, 1459 , and 1499 ; these facilities are covered under the Sand and Gravel General Permit) 14xx
Food and Kindred Products 20xx
Tobacco Products 21xx
Textile Mill Products 22xx Apparel and Other Finished Products Made from Fabrics and Similar Material 23xx
Lumber and Wood Products 24xx
Furniture and Fixtures 25xx Paper and Allied Products 26xx Printing, Publishing and Allied Industries 27xx
Chemicals and Allied Products (including Compost Facilities) 28xx Petroleum Refining and Related Industries (Except facilities in SIC 2951; these facilities are covered under the Sand and Gravel General Permit) 29xx
Rubber and Miscellaneous Products 30xx
Leather and Leather Products 31xxS1.A

Final Industrial Stormwater General Permit
– January 2, 2015 Page 4 Industrial Activities SIC Groups Stone, Clay, Glass, and Concrete Products (Except facilities in SIC 3271

- 3273; these facilities are covered under the Sand and Gravel General Permit) 32xx

Primary Metal Industries 33xx
Fabricated Metal Products 34xx
Industrial and Commercial Machinery and Computer Equipment 35xx Electronic and Other Electrical Equipment and Components 36xx Transportation Equipment 37xx Measuring, Analyzing, and Controlling Instruments; Photographic, Medical, and Optical Goods; Watches and Clocks 38xx Miscellaneous Manufacturing Industries 39xx Farm Product Storage 4221 Refrigerated Storage 4222 General Storage 4225 Recycling facilities involved in the recycling of materials, including but not limited to, metal scrap yards, battery reclaimers, salvage yards, auto recyclers, and automobile junkyards. 5015 and
5093
Steam Electric Power Generation N/A Refuse Systems, including, but not limited to, landfills , transfer stations, open dumps,
and land application sites , except as described in S1.C.6 or C.7. 4953 Hazardous waste treatment, storage, and disposal (TSD) facilities, and recycling facilities regulated under Chapter 173

- 303 WAC. N/A

Treatment works treating domestic sewage, or any other sewage sludge, or wastewater treatment device or system, used in the storage, recycling, and reclamation of municipal or domestic sewage (including land dedicated to the disposal of sewage sludge that are located within the confines of the facility ) with the design flow capacity of 1 million gallons per day (MGD) or more, or required to have a pretreatment program under 40 CFR §403. 4952 Transportation facilities which have vehicle maintenance activity, equipment cleaning operations, or airport deicing operations:

• Railroad Transportation 40xx

• Local and Suburban Transit and Interurban Highway Passenger Transportation 41xx

• Motor Freight Transportation (except SIC 4221

– 25) 42xx

• United States Postal Service 43xx

• Water Transportation 44xx

• Air Transportation 45xx

• Petroleum Bulk Stations and Terminals 5171S1.A.2

Final Industrial Stormwater General Permit
– January 2, 2015 Page 5 2. Any facility that has an existing National Pollutant Discharge Elimination System (NPDES) permit which does not address all stormwater discharges associated with industrial activity [ 40 CFR Subpart 122.26(b)(14)] shall obtain permit coverage.

3. Any inactive facility which is listed under 40 CFR Subpart 122.26(b)(14) where significant materials remain onsite and are exposed to stormwater shall obtain permit

coverage.

B. Significant Contributors of Pollutants

Ecology may require a facility to obtain coverage under this permit if Ecology determines
the facility :

1. Is a significant contributor of pollutants to waters of the state , including ground

water ;

2. May reasonably be expected to cause a violation of any water quality standard ; or

3. Conducts industrial activity , or has a SIC code, with stormwater characteristics similar to any industrial activity or SIC code listed in Table 1 in S1.A.1.

C. Facilities Not Required to Obtain Coverage

Ecology does not require the types of facilities listed below to obtain coverage under this permit, unless determined to be a significant contributor of pollutants

. 1. Industrial facilities that submit an application and qualify for a Conditional “No Exposure” Exemption . (Condition S1.F)

2. Industrial facilities that discharge stormwater only to a municipal combined sewer or sanitary sewer. Discha rge of stormwater to sanitary or combined sewers shall only occur as authorized by the municipal sewage authority.

3. Industrial facilities that discharge stormwater only to groun dwater (e.g., on

- site infiltration) with no discharge to surface waters of the state under any condition.

4. Office buildings and/or administrative parking lots from which stormwater does not commingle with stormwater from areas associated with industrial activity

. 5. Any part of a facility with a discharge that is in compliance with the instructions of an
On

- Scene -Coordinator pursuant to 40 CFR part 300 (The National Oil and Hazardous Substances Pollution Contingency Plan) or 33 CFR 153.10(e) (Pollution by Oil and Hazardous Substances), in accordance with 40 CFR 122.3(d).

6. Any land applica tion site used for the beneficial use of industrial or municipal wastewater for agricultural activities or when applied for landscaping purposes at agronomic rates.

7. Any farmland, domestic garden, or land used for sludge management where domestic sewage slu dge (biosolids ) is beneficially reused (nutrient builder or soil conditioner) and which is not physically located in the confines of domestic sewage treatment works, or areas that are in compliance with Section 405 (Disposal of Sewage Sludge)
of the Clean Water Act (CWA)

.S1.C.8

Final Industrial Stormwater General Permit
– January 2, 2015 Page 6 8. Any inactive coal mining operation if:

a. The performance bond issued to the facility by the appropriate Surface Mining Control and Reclamation Act (SMCRA) authority has been released from applicable state or federal reclamation requirements after December 17, 1990.

b. The mine does not have a discharge of stormwater that comes in contact with any overburden, raw material, intermediate products, finished products, byproducts, or waste pr oducts located on the site of the facility

. 9. Inactive mining, inactive oil and gas operations, or inactive landfill s where neither an owner nor an operator can be identified.

10. Closed landfills that are capped and stabilized, in compliance with Chapter 173-304 WAC, and in which no significant materials or industrial pollutant s remain exposed

to stormwater

. Permittee's with existing coverage may submit a Notice of
Termination in accordance with Special Condition S13.A.1.

D. Facilities Excluded from Coverage

Ecolo gy will not cover the following facilities or activities under this permit:

1. If any part of a facility , in the categories listed below, has a stormwater discharge subject to stormwater Effluent Limitations Guidelines, New Source Performance Standards (NSPS) Under 40 CFR Subchapter N, or Toxic Pollutant Effluent
Standards under 40 CFR Subchapter D Part 129 ; the operator of the facility must apply for an individual NPDES permit or seek coverage under an industry- specific general permit for those stormwater discharge s. Below is a list of categories of industries specified in 40 CFR Subchapter N for which at least one subpart includes stormwater effluent limitations guidelines or NSPS

. Industries included in this list should review the Subchapter N guidelines to determine if they are subject to a stormwater effluent limitation guideline for activities which they perform at their site.

40 CFR 411 Cement manufacturing 40 CFR 423 Steam e lectric power generating

40 CFR 412 Feedlots 40 CFR 434 Coal mining 40 CFR 418 Fertilizer manufacturing 40 CFR 436 Mineral mining and processing 40 CFR 419 Petroleum refining 40 CFR 440 Ore mining and dressing 40 CFR 422 Phosphate manufacturing 40 CFR 443 Paving and roofing materials (tars & asphalt) 40 CFR 449.11(a) Airports with more than 10,000 annual jet departures.

Facilities, which are subject to effluent standards in 40 CFR Subchapter D Part 129 : Aldrin/Dieldrin; DDT; Endrin; Toxaphene; Benzidine; or Polychlorinated Biphenyls (PCBs)

, shall apply for an individual NPDES permit.

2. Nonpoint source silvicultural activities with natural runoff that are excluded in 40
CFR Subpart 122.27.S1.D.3

Final Industrial Stormwater General Permit
– January 2, 2015 Page 7 3. Industrial activities operated by any department , agency, or instrumentality of the executive, legislative, and judicial branches of the Federal Government of the United States, or another entity, such as a private contractor, performing industrial activity for any such department, agency, or instrument ality

. 4. Facilities located on “Indian Country” as defined in 18 U.S.C. §1151, except portions of the Puyallup Reservation as noted below.

Indian Country includes:

a. All land within any Indian Reservation notwithstanding the issuance of any patent, and, including rights-of-way running through the reservation. This includes all federal, tribal, and Indian and non-Indian privately owned land
within the reservation.

b. All off -reservation Indian allotments, the Indian titles to which have not been extinguished, including rights-of-way running through the same.

c. All off -reservation federal trust lands held for Native American Tribes.

Puyallup Exception: Following the Puyallup Tribes of Indians Land Settlement Act of
1989 , 25 U.S.C. §1773; the permit does apply to land within the Puyallup Reservation except for discharges to surface water on land held in trust by the federal government.

5. Any facility authorized to discharge stormwater associated with industrial activity under an existing NPDES individual or other general permit.

6. All construction activities

. Operators of these construction activities shall seek coverage under the Construction Stormwater General Permit or an individual NPDES permit for stormwater associated with construction activity

. 7. Facilities that discharge to a waterbody with a control plan , unless this general permit adequately provides the level of protection required by the control plan

. 8. New dischargers to a waterbody listed pursuant to Section 303(d) of the CWA, unless
the Permi ttee meets the requirements of Condition S6.B.

9. Hazardous waste landfill s subject to 40 CFR Part 445, Subpart A.

E. Discharges to Ground

1. For sites that discharge to both surface water and ground water , the terms and conditions of this permit shall apply to all ground water discharge s. However, Permittee s are not required to sample on-site discharges to ground (e.g., infiltration), unless specifically required by Ecology (Condition G12).

2. Facilities that discharge to ground water through an underground injection control
well shall comply with any applicable requirements of the Underground Injection Control (UIC) regulations, Chapter 173-218 WAC.S1.F

Final Industrial Stormwater General Permit
– January 2, 2015 Page 8 F. Conditional "No Exposure" Exemption

1. Any industrial activity identified for coverage under Condition S1.A. that is eligible for a “No Exposure” exemption from the permit under 40 CFR 122.26 (g), may submit a No Exposure Certification Form to Ecology , either in writing or electronically.

a. A Permitte e is automatically granted a No Exposure exemption 90 days from Ecology ’s receipt of a complete and accurate No Exposure Certification Form,
unless Ecology informs the applicant in writing or electronically within 90 days that it has denied or approved the request.

b. Ecology will automatically terminate permit coverage when it grants the No Exposure exemption to a permitted facility

.

c. Facilities which are granted a No Exposure exemption must submit a No Exposure Certification Form to Ecology once every five years

. d. No Exposure exemptions are conditional. If there is a change at the facility that results in the exposure of industrial activities or materials to stormwater , the facility is required to immediately apply for and obtain a permit.

S2. APPLICATION FOR COVERAGE

A. Obtaining Permit Coverage

1. Unpermitted facilities that require coverage under this permit shall submit a complete and accurate permit application to Ecology as follows:

a. Existing Facilities

i. Unpermitted existing facilities that require coverage under this permit shall submit a complete and accurate permit application to Ecology

. ii. Existing facilities are facilities in operation prior to the effective date of this permit, January 2, 2015.

b. New Facilities

New facilities are facilities that begin operation on or after the effective date of this permit, January 2, 2015. All unpermitted new facilities shall:

i. Submit a complete and accurate permit application to Ecology at least 60 days
before the commencement of stormwater discharge from the facility

. ii. The application shall include certification that the facility has met the applicable public notice and State Environmental Policy Act (SEPA) requirements in WAC 173-226-200(f).

B. Modification of Permit Coverage

A Permittee anticipating a significant process change

, or otherwise requesting a modification of permit coverage, shall submit a complete Modification of Coverage Form

to Ecology

. The Permittee shall:S2.B.1

Final Industrial Stormwater General Permit
– January 2, 2015 Page 9 1. Apply for modification of coverage at least 60 days be fore implementing a significant process change ; or by May15 th prior to a Corrective Action deadline, if requesting a
Level 2 or 3 time extension or waiver request per Condition S8.B-D

. 2. C omplete the public notice requirements in WAC 173-226-130(5) as part of a complete application for modification of coverage.

3. Comply with SEPA as part of a complete application for modification of coverage if undergoing a significant process change

. C. Permit Coverage Timeline

1. If the applicant does not receive notificat ion from Ecology , permit coverage automatically commences on whichever of the following dates occurs last:

a. The 31 st day following receipt by Ecology of a completed application for

coverage.

b. The 31 st day following the end of a 30-day public comment period.

c. The effective date of the general permit

. 2. Ecology may need a dditional time to review the application :

a. If the application is incomplete

. b. If it requires additional site

- specific information

.

c. If the public requests a public hearing

. d. If members of the public file comments

.

e. When more information is necessary to determine whether coverage under the general permit is appropriate.

3. When Ecology needs additional time:

a. Ecology will notify the applicant in writing within 30 days and identify the issues that the applicant must resolve before a decision can be reached.

b. Ecology will submit the final decision to the applicant in writing

. If Ecology approves the application for coverage, coverage begins the 31 st day following approval, or the date the approval letter is issued, whichever is later.S2.D

Final Industrial Stormwater General Permit
– January 2, 2015 Page 10 D. Transfer of Permit Coverage

Coverage under this general permit shall automatically transfer to a new discharger , if all of the following conditions are met:

1. The Permittee (existing discharger ) and new discharger submit to Ecology a complete, written, signed agreement (Transfer of Coverage Form) containing a specific date for transfer of permit responsibility, coverage, and liability.

2. The ty pe of industrial activities and practices remain substantially unchanged.

3. Ecology does not notify the Permittee of the need to submit a new application for coverage under the general permit or for an individual permit pursuant to Chapters 173-216, 173-220, and 173-226 WAC.

4. Ecology does not notify the existing discharger and new discharger of its intent to revoke coverage under the general permit

. The transfer is effective on the date specified in the written agreement unless Ecology gives this notice

.

S3. STORMWATER POLLUTION PREVENTION PLAN (SWP PP)

A. General Requirements

1. All Permittees and applicants for coverage under this permit shall develop and implement a SWPPP for the permitted facility as follows:

2. The SWPPP shall specify the Best Management Practices (BMPs) necessary to:

a. Provide all known, available, and reasonable methods of prevention, control, and treatment ( AKART ) of stormwater pollution

. b. Ensure the discharge does not cause or contribute to a violation of the Water Quality Standards.

c. Comply with applicable federal technology- based treatment requirements under
40 CFR 125.3.

3. Proper Selection and Use of Stormwater Management Manuals (SWMM) :

BMPs shall be consistent with:

a. Stormwater Management Manual for Western Washington ( 2012 edition), for
sites west of the crest of the Cascade Mountains ; or

b. Stormwater Management Manual for Eastern Washington ( 2004 edition), for sites
east of the crest of the Cascade Mountains ; or

c. Revisions to the manuals in S3.A.3.a & b., or other stormwater management guidance documents or manuals which provide an equivalent level of pollution prevention, that are approved by Ecology and incorporated into this permit in accordance with the permit modification req uirements of WAC 173-226-230. For purposes of this section, the documents listed in Appendix 10 of the August 1,
2013 Phase I Municipal Stormwater Permit are hereby incorporated into this permit ; orS3. A.3.d

Final Industrial Stormwater General Permit
– January 2, 2015 Page 11 d. Documentation in the SWPPP that the BMPs selected are demonstrably equivalent to practices contained in stormwater technical manuals approved by Ecology , including the proper selection, implementation, and maintenance of all applicable and appropriate best management practices for on

- site pollution
control.

4. Update of the SWPPP

a. The P ermittee shall modify the SWPPP if the owner/operator or the applicable local or state regulatory authority determines during inspections or investigations that the SWPPP is, or would be, ineffective in eliminating or significantly minimizing pollutant s in stormwater discharges from the site. The Permittee shall modify the SWPPP:

i. As necessary to include additional or modified BMPs designed to correct problems identified.

ii. T o correct the deficiencies identified in writing from Ecology within 30 days of
notice.

b. The Permittee shall modify the SWPPP whenever there is a change in design, construction, operation, or maintenance at the facility that significantly changes
the nature of pollutant s discharged in stormwater from the facility , or significantly increases the quantity of pollutants discharged.

c. If a Permittee covered under the 2010 ISGP needs to update their SWPPP to be consistent with the 2015 ISGP, the update shall be completed by January 30,
2015.

5. Other Pollution Control Plans

The Permittee may incorporate by reference applicable portions of plans prepared for other purposes at their facility . Plans or portions of plans incorporated by reference into a SWPPP become enforceable requirements of this permit and must be available
al ong with the SWPPP as required in S9.F. A Po llution Prevention Plan prepared under the Hazardous Waste Reduction Act, Chapter 70.95C RCW, is an example of such a plan.

6. Signatory Requirements

The Permittee shall sign and certify all SWPPPs in accordance with General Condition G2, each time it revises or modifies a SWPPP to comply with Conditions S3.A.4 (Update of the SWPPP), S7 (Inspections) or S8 (Corrective Actions)

. The SWPPP Certification Form is contained in Appendix 3 of this permit and on Ecology’s industrial stormwater website

.
B. Specific SWPPP Requirements

The SWPPP shall contain a site map, a detailed assessment of the facility , a detailed description of the BMPs, Spill Prevention and Emergency Cleanup Plan, and a sampling plan

. The Permittee shal l identify any parts of the SWPPP which the facility wants to claim as Confidential Business Information.S3.B .1

Final Industrial Stormwater General Permit
– January 2, 2015 Page 12 1. The site map shall identify :

a. The scale or include relative distances between significant structures and drainage systems.

b. Significant features.

c. The stormwater drainage and discharge structures and identify , by name, any other party other than the Permittee that owns any stormwater drainage or discharge structures.

d. The stormwater drainage areas for each stormwater discharge point off

- site (including d ischarges to ground water ) and assign a unique identifying number for each discharge point.

e. Each sampling location by unique identifying number.

f. Paved areas and buildings.

g. Areas of pollutant contact (actual or potential) associated with specific industri al
activities.

h. Conditionally approved non- stormwater discharges (Condition S5.D).

i. Surface water locations (including wetlands and drainage ditches).

j. Areas of existing and potential soil erosion that could result in the discharge of a significant amount of turbidity, sediment or other pollutants.

k. Vehicle maintenance areas.

l. Lands and waters adjacent to the site that may be helpful in identifying discharge points or drainage routes.

2. The facility assessment shall include a description of the facility ; an inventory of facility activities and equipment that contribute to or have the potential to contribute

any pollutant s to stormwater ; and, an inventory of materials that contribute to or have the potential to contribute pollutants to stormwater

.

a. The facility description shall describe:

i. The industrial activities conducted at the site.

ii. Regular business hours and seasonal variations in business hours or industrial
activities.

iii. The general layout of the facility including buildings and storage of raw
materi als, and the flow of goods and materials through the facility

. b. The inventory of industrial activities shall identify all areas associated with industrial activities (see Table 1 ) that have been or may potentially be sources of pollutant s, including, but not limited to, the following:

i. Loading and unloading of dry bulk materials or liquids.

ii. Outdoor storage of materials or products.

iii. Outdoor manufacturing and processing.S3.B .2.b.iv

Final Industrial Stormwater General Permit
– January 2, 2015 Page 13 iv. On

- site d ust or particulate generating processes.

v. On

- site waste treatment, storage, or disposal.

vi. Vehicle and equipment fueling, maintenance, and/or cleaning (includes washing).

vii. Roofs or other surfaces exposed to air emissions from a manufacturing building or a process area.

viii. Roofs or other surfaces composed of mat erials that may be mobilized by

stormwater (e.g., galvanized roofs, galvanized fences).

c. The inventory of materials shall list:

i. The types of materials handled at the site that potentially may be exposed to precipitation or runoff and could result in stormwa ter pollution

. ii. A short narrative for each material describing the potential of the pollutant to be present in stormwater discharges

. The Permittee shall update this narrative when data become available to verify the presence or absence of these pollutants.

iii. A narrative description of any potential sources of pollutant s from past activities, materials and spills that were previously hand led, treated, stored, or disposed of in a manner to allow ongoing exposure to stormwater

. Include the method and location of on-site storage or disposal

. List significant spills and significant leaks of toxic or hazardous pollutants.

3. The SWPPP shall identify specific individuals by name or by title within the organization ( pollution prevention team) whose responsibilities include: SWPPP development, implementation, maintenance, and modification.

4. Best Management Practices (BMPs)

a. General BMP Requ irements

The Permittee shall describe each BMP selected to eliminate or reduce the potential to contaminate stormwater and prevent violations of water quality
standards

. The SWPPP must explain in detail how and where the selected BMPs will be implemented.

b. T he Permittee shall include each of the following mandatory BMPs in the SWPPP
and implement the BMP s . The Permittee may omit individual BMPs if site conditions render the BMP unnecessary, infeasible , or the Permittee provides alternative and equally effective BMPs ; if the Permittee clearly justifies each
BMP omission in the SWPPP.

i. Operational Source Control BMPs

1) The SWPPP shall include the Operational Source Control BMPs listed as “applicable” in Ecology ’s SWMMs , or other guidance documents or
manual s approved in accordance with S3.A.3.c.S3.B .4.b.i.2)

Final Industrial Stormwater General Permit
– January 2, 2015 Page 14 2) Good Housekeeping: The SWPPP shall include BMPs that define ongoing maintenance and cleanup, as appropriate, of areas which may
contribute pollutant s to stormwater discharges . The SWPPP shall include
the schedule/f requency for completing each housekeeping task, based

upon industrial activity , sampling results and observations made during inspections. The Permittee shall:

a) Vacuum paved surfaces with a vacuum sweeper (or a sweeper with a vacuum attachment) to remove accumulated pollutant s a minimum of once per quarter.

b) Identify and control all on- site sources of dust to minimize stormwater contamination from the deposition of dust on areas exposed to precipitation.

c) Inspect and maintain bag houses monthly to prevent the escape of dust from the system

. Immediately remove any accumulated dust at the base of exterior bag houses.

d) Keep all dumpsters under cover or fit with a lid that must remain
closed when not in use.

3) Preventive Maintenance: The SWPPP shall include BMPs to inspect and
maintain the stormwater drainage, source controls, treatment systems (if any), and plant equipment and systems that could fail and result in
contamination of stormwater

. The SWPPP shall include the schedule/frequency for complet ing each maintenance task

. The Permittee

must:

a) Clean catch basins when the depth of debris reaches 60% of the sump depth. In addition, the Permittee must keep the debris surface at least 6
inches below the outlet pipe

. b) Maintain ponds, tanks/vaults, catch basins, swales, filters, oil/water separators, drains, and other stormwater drainage/treatment facilities in accordance with the Maintenance Standards set forth in the applicable Stormwater Management Manual (SWMM) , other guidance documents or manuals approved in accordance with S3.A.3.c., demonstrably equivalent BMPs per S3.A.3.d., or an O&M Manual submitted to Ecology in accordance with S8.D.

c) Inspect all equipment and vehicle s during monthly site inspections for leaking fluids such as oil, antifreeze, etc

. Take leaking equipment and
vehicles out of service or prevent leaks from spilling on the ground until repaired.

d) Immediately clean up spills and leaks (e.g., using absorbents, vacuuming) to prevent the discharge of pollutant s.S3.B .4.b.i.4)

Final Industrial Stormwater General Permit
– January 2, 2015 Page 15 4) Spill Prevention and Emergency Cleanup Plan (SPECP): The SWPPP shall include a SPECP that includes BMPs to prevent spills that can
contaminate stormwater

. The SPECP shall specify BMPs for material handling procedures, storage requirements, cleanup equipment and procedures, and spill logs, as appropriate. The Permittee shall:

a) Store all chemical liquids, fluids, and petroleum products, on an impervious surface that is surrounded with a containment berm or dike that is capable of containing 10% of the total enclosed tank volume or 110% of the volume contained in the largest tank, whichever is greater.

b) Prevent precipitation from accumulating in containment areas with a roof or equivalent structure or include a plan on how it will manage and dispose of accumulated water if a containment area cover is not practical.

c) Locate spill kits within 25 feet of all stationary fueling stations, fuel transfer stations, mobile fueling units , and used oil storage/transfer
stations

. At a minimum, spill kits shall in clude:

i) Oil absorbents capable of absorbing 15 gallons of fuel.

ii) A storm drain plug or cover kit.

iii) A non-water containment boom, a minimum of 10 feet in length with a 12-gallon absorbent capacity.

iv) A non- metallic shovel

. v) Two five- gallon buckets with lids.

d) Not lockshut-off fueling nozzles in the open position. Do not “topoff” tanks being refueled.

e) Block, plug or cover storm drains that receive runoff from areas where fueling, during fueling.

f) Use d rip pans or equivalent containment measures during all petroleum transfer operations.

g) L ocate materials, equipment, and activities so that leaks are contained in existing containment and diversion systems (confine the storage of leaky or leak -prone vehicle s and equipment awaiting maintenance to protected areas).

h) Use d rip pans and absorbents under or around leaky vehicles and equipment or store indoors where feasible. Drain fluids from equipment and vehicles prior to on-site storage or disposal.

i) Maintain a spill log that includes the following information for
chemical and petroleum spills: date, time, amount, location, and reasonS3.B .4.b.i.4).i)

Final Industrial Stormwater General Permit
– January 2, 2015 Page 16 for spill; date/time cleanup completed, notifications made and staff
involved.

5) Employee Training: The SWPPP shall include BMPs to provide SWPPP training for employees who have duties in areas of industrial activities subject to this permit

. At a minimum, the training plan shall include:

a) The content of the training.

i) An overview of what is in the SWPPP.

ii) How employees make a difference in complying with the SWPPP and preventing contamination of stormwater

. iii) Spill response procedures, good housekeeping, maintenance requirements, and material management practices.

b) How the Permittee will conduct training.

c) The frequency/schedule of training. The Permittee shall train employees annually, at a minimum.

d) A log of the dates on which specific employees received training.

6) Inspections and Recordkeeping: The SWPPP shall include documentation of procedures to ensure compliance with permit requirements for inspections and recordkeeping. At a minimum, the SWPPP shall:

a) Identify facility personnel who will inspect designated equipment and facility areas as required in Condition S7.

b) Contain a visual inspection report or check list that includes all items required by Condition S7.C.

c) Provide a tracking or follow-up procedure to ensure that a report is prepared and any appropriate action taken in response to visual inspections.

d) Define how the Permittee will comply with signature requirements and records retention identified in Special Condition S9, Reporting and
Re cordkeeping Requirements.

e) Include a certification of compliance with the SWPP P and permit for each inspection using the language in S7.C.1.c.

f) Include all inspection reports completed by the Permittee (S7.C).

7) Illicit Discharges : The SWPPP shall include measures to identify and
eliminate the discharge of process wastewater

, domestic wastewater

, noncontact cooling water , and other illicit discharges , to stormwater sewers, or to surface waters and ground waters of the state

. The Permittee

can find BMPs to identify and eliminate illicit discharges in Volume IV ofS3.B .4.b.i.7)

Final Industrial Stormwater General Permit
– January 2, 2015 Page 17 Ecology 's SWMM for Western Washington and Chapter 8 of the SWMM for Eastern Washington.

Water from washing vehicles or equipment, steam cleaning and/or pressure washing is considered process wastewater. The Permittee must not allow this process wastewater to comingle with stormwater or enter storm drains; and must collect in a tank for off-site disposal, or discharge
it to a sanitary sewer , with written approval from the local sewage authority.

ii. Structural Source Control BMPs

1) The SWPPP shall include the Structural Source Control BMPs listed as “applicable” in Ecology ’s SWMM s, or other guidance documents or manuals approved in accordance with S3.A.3.c.

2) The SWPPP shall include BMPs to mi nimize the exposure of manufacturing, processing, and material storage areas (including loading and unloading, storage, disposal, cleaning, maintenance, and fueling operations) to rain, snow, snowmelt, and runoff by either locating these industrial materials and activities inside or protecting them with storm resistant coverings.

Permittees shall:

a) Use grading, berming, or curbing to prevent runoff of contaminated
flows and divert run- on away from these areas

. b) Perform all cleaning operations indoors, under cover, or in bermed areas that prevent stormwater runoff and run-on, also that capture any

overspray.

c) Ensure that all washwater drains to a collection system that directs the
washwater to further treatment or storage and not to the stormwater drainage system

.

iii. Treatment BMP s

The Permittee shall:

1) Use Treatment BMPs consistent with the applicable documents referenced
in Condition S3.A.3.

2) Employ oil /water separators, booms, skimmers, or other methods to eliminate or minimize oil and grease contamination of stormwater discharges.

3) Obtain Ecology approval before beginning construction/installation of all
treatment BMP s that include the addition of chemicals to provide

treatment.S3.B .4.b.iv

Final Industrial Stormwater General Permit
– January 2, 2015 Page 18 iv. Stormwater Peak Runoff Rate and Volume Control BMPs

Facilities with new development or redevelopment shall evaluate whether flow control BMPs are necessary to satisfy the state’s AKART requirements, and prevent violations of water quality standards. If flow control BMPs are required, they shall be selected according to S3.A.3.

v. Erosion and Sediment Control BMPs

The SWPPP shall include BMPs necessary to prevent the erosion of soils and other earthen materials (crushed rock/gravel, etc.) , control off

- si te sedimentation, and prevent violations of water quality standards. The Permittee shall implement and maintain:

1) Sediment control BMPs such as detention or retention ponds or traps, vegetated filter strips, bioswales, or other permanent sediment control
BMPs to minimize sediment loads in stormwater discharges.

2) Filtration BMPs to remove solids from catch basins, sumps or other

stormwater collection and conveyance system components ( catch basin filter inserts, filter socks, modular canisters, sand filtration, centrifugal separators, etc.)

.

5. Sampling Plan

The SWPPP shall include a sampling plan . The plan shall:

a. Identify points of discharge to surface water, storm sewers , or discrete ground

water infiltration locations, such as dry wells or detention ponds.

b. Include documentation of why applicable parameters are not sampled at each discharge point per S4.B.2.c (if applicable) :

i. Location of which discharge points the Permittee does not sample applicable parameters because the pollutant concentrations are substantially identical to a discharge point being sampled.

ii. G eneral industrial activities conducted in the drainage area of each discharge point.

iii. Best Management Practices conducted in the drainage area of each discharge point.

iv. Exposed materials located in the drainage area of each discharge point that are likely to be significant contributors of pollutant s to stormwater discharges

.

v. Impervious surfaces in the drainage area that could affect the percolation of

stormwater runoff into the g round (e.g., asphalt, crushed rock, grass).

vi. Reasons w hy the Permittee expects the discharge points to discharge substantially identical effluents.

c. Identify each sampling location by its unique identifying number such as A1, A2.

d. Identify staff responsible for conducting stormwater sampling.S 3

. B.5.e

Final Industrial Stormwater General Permit
– January 2, 2015 Page 19 e. Specify procedures for sample collection and handling.

f. Specify procedures for sending samples to a laboratory.

g. Identify parameters for analysis, holding times and preservatives, laboratory quantitation levels, and analytical methods.

h. Specify the procedure for submitting results to Ecology

.

S4. GENERAL SAMPLING REQUIREMENTS

A. General Requirements

The Permittee shall conduct sampling of stormwater in accordance with this permit and
the SWPPP.

B. Sampling Requirements

1. Sample Timing and Frequency

a. The Permittee shall sample the discharge from each designated loc ation at least once per quarter:

1 st Quarter = January, February, and March

2 nd Quarter = April, May, and June

3 rd Quarter = July, August, and September

4 th Quarter = October, November, and December

b. Permittees shall sample the stormwater discharge from the first fall storm event each year

. “F irst fall storm event ” means the first time on or after October 1 st of each year that precipitation occurs and results in a stormwater discharge from a facility

.

c. P ermittees shall collect samples within the first 12 hours of stormwater discharge

events

. If it is not possible to collect a sample within the first 12 hours of a

stormwater discharge event, the Permittee must collect the sample as soon as practicable after the first 12 hours, and keep documentation with the sampling records (Condition S4.B.3) explaining why they could not collect samples within
the first 12 hours; or if it is unknown (e.g., discharge was occurring during start of regular business hours).

d. The Permittee shall obtain representative samples, which may be a single grab sample, a time -proportional sample, or a flow-proportional sample.

e. Permittee s need not sample outside of regular business hours , during unsafe conditions, or during quarters where there is no discharge, but shall submit a Discharge Monitoring Report each reporting period (Condition S9.A).

2. Sample Location(s)

a. The Permittee shall designate sampling location (s) at the point(s) where it discharges stormwater associated with industrial activity off

- site

.S4.B

. 2

. b

Final Industrial Stormwater General Permit
– January 2, 2015 Page 20 b. The Permittee is not required to sample on -site discharges to ground (e.g., infiltration) or sanitary sewer discharges, unless specifically required by Ecology (C ondition G12).

c. The Permittee shall sample each distinct point of discharge off

- site except as otherwise exempt from monitoring as a “ substantially identical discharge point ” per S3.B.5.b. If applicable, t he Permittee is only required to monitor applicable parameters at one of the “substantially identical discharge points ”.

d. The Permittee shall notify Ecology of any changes or updates to sample locations, discharge points , and/or outfalls by submitting an “Industrial Stormwater General Permit Discharge/Sample Point Update Form” to Ecology.

3. Sample Document ation

For each stormwater sample taken, the Permittee shall record the following
information and retain it on- site for Ecology review :

a. Sample date.

b. Sample time

.

c. A notation describing if the Permittee collected the sample within the first 12
hours of stormwater discharge events; or, if it is unknown (e.g., discharge was occurring during start of regular business hours).

d. An explanation of why the Permittee could not collect a sample within the first 12 hours of a stormwater discharge event, if it was not possible. Or, if it is unknown, an explanation of why the Permittee does no t know if a sample was collected within or outside the first 12 hours of stormwater discharge.

e. Sample location (using SWPPP identifying number).

f. Method of sampling, and method of sample preservation, if applicable.

g. Individual who performed the sampling.

h. Weather conditions.

4. Laboratory Documentation

The Permittee shall retain laboratory reports on- site for Ecology review and shall ensure that all laboratory reports providing data for all parameters include the following information:

a. Date of analysis.

b. Parameter name.

c. CAS number , if applicable

. d. Analytical method(s).

e. Individual who performed the analysis.

f. Method detection limit (MDL).

g. Laboratory quantitation level (QL) achieved by the laboratory.S4.B.4.h

Final Industrial Stormwater General Permit
– January 2, 2015 Page 21 h. Reporting units.

i. Sample result.

j. Quality assurance/quality control data.

5. The Permittee shall maintain the original records onsite and make them available to Ecology upon request.

6. The Permittee may suspend sampling for one or more parameters (other than “visible oil sheen”) for a period of three years (12 quarters) based on cons istent attainment of
benchmark values when:

a. Eight consecutive quarterly samples demonstrate a reported value equal to or less
than the benchmark value ; or for pH, within the range of 5.0 – 9.0.

b. For purposes of tallying “consecutive quarterly samples” :

i. Do not include any quarters in which the P ermittee did not collect a sample, but should have (e.g., discharge (s) occurred during normal working hours, and during safe conditions; but no sample was collected during the entire quarter). If this occurs, the tal ly of consecutive quarterly samples is reset to zero.

ii. Do not include any quarters in which the P ermittee did not collect a sample
because there was no discharge during the quarter (or the discharges during the quarter occurred outside normal working hours or during unsafe conditions). These quarters are not included in the calculation of eight consecutive quarters, but do not cause the tally to be reset ; i.e., they are skipped over.

c. Permittees monitoring more than once per quarter shall average all of the monitoring results for each parameter (except pH and “visible oil sheen”) and compare the average value to the benchmark value. However, if Permittees collect more than one sample during a 24- hour period, they must first calculate the daily

average of the individual grab sample results collected during that 24-hour period; then use the daily average to calculate a quarterly average.

7. A Permittee who has a significant process change shall not use previous sampling
results to demonstrate consistent attainment

. 8. Suspension of sampling based on consistent attainment does not apply to pollutant parameters subject to numeric effluent limits based on federal Effluent Limitation Guidelines (Condition S5.C) or Section 303(d) of the Clean Water Act (Condition S6).

C. Analytical Procedures for Sampling Requirements

The Permittee shall ensure that analytical methods used to meet the sampling requirements in this permit conform to the latest revision of the Guidelines Establishing Test Procedures for the Analysis of Pollutants contained in 40 CFR Part 136, unless specified otherwise in this permit

.S4.D

Final Industrial Stormwater General Permit
– January 2, 2015 Page 22 D. Laboratory Accreditation

1. The Permittee shall ensure that all analytical data required by Ecology is prepared by a laboratory registered or accredited under the provisions of, Accreditation of Environmental Laboratories, Chapter 173-50 WAC.

2. Turbidity and pH are exempt from this requirement, unless the laboratory must be registered or accredited for any other parameter.

S5. BENCHMARKS
, EFFLUENT LIMITATIONS
, AND SPECIFIC SAMPLIN G REQUIREMENTS

A. Benchmarks and Sampling Requirements

1. Permittees shall sample their stormwater discharges as specified in Condition S4 and

as specified in Table 2

. 2. Additional sampling and/or requirements apply to specific industrial categories (S5.B), and facilities sub ject to effluent limitation guidelines (S5.C), and certain discharges to impaired waters (S6).

3. If a Permittee's discharge exceeds a benchmark listed in Table 2 , the Permittee shall
take the actions specified in Condition S8. Permittees sampling more than once per quarter shall average the sample results for each parameter (except pH and “visible oil sheen”) and compare the average value to the benchmark to determine if the discharge has excee ded a benchmark value. However, if Permittees collect more than one sample during a 24-hour period, they must first calculate the daily average of the individual grab sample results collected during that 24-hour period; then use the daily

average to calculate a quarterly average

.S5.B

Final Industrial Stormwater General Permit
– January 2, 2015 Page 23 Table 2: Benchmarks and Sampling Requirements Applicable to All Facilities

Parameter Units Benchmark
Value Analytical
Method Laboratory Quantitation
Level a Minimum Sampling Frequency b
Turbidity NTU 25 EPA 180.1
Meter 0.5 1/quarter

pH Standard Units Between 5 .0 and 9.0 Meter/Paper c ±0.5 1/quarter

Oil Sheen Yes/No No Visible Oil Sheen N/A N/A 1/quarter

Copper, Total μg/L Western WA: 14
Eastern WA: 32 EPA 200.8 2.0 1/quarter

Zinc, Total μg/L 117 EPA 200.8 2.5 1/quarter

a. The Permittee shall ensure laboratory results comply with the quantitation level (QL) specified in the table

. However, if an alternate method from 40 CFR Part 136 is sufficient to produce measurable results in the sample

, the Permittee may use that method for analysis

. If the Permittee uses an alternative method it must report the test method and QL on the DMR

. If the Permittee is unable to obtain the required QL due to matrix effects, the Permittee must report the matrix

- specific method detection level (MDL) and QL on the DMR.

b. 1/quarter means at least one sample taken each quarter, year

- round.

c. Permittees shall use either a calibrated pH meter or narrow

- range pH indicator paper with a resolution not greater than ± 0.5 SU.

B. Add itional Sampling Requirements for Specific Industrial Groups

1. In addition to the requirements in Table 2 , all Permittees identified by an industrial activity in Table 3 shall sample stormwater discharges as specified in Condition S4
and in Table 3

. 2. If a discharge exceeds a benchmark listed in Table 3 , the Permittee shall take the actions specified in Condition S8. Permittees sampling more than once per quarter shall average the sample results for each parameter and compare the average value to
the benchmark to determine if it the discharge has exceeded a benchmark . However, if Permittees collect more than one sample during a 24 -hour period, they must first
calculate the daily average of the individual grab sample results collected during that 24-hour period; then use the daily average to calculate a quarterly average

.S5.B

Final Industrial Stormwater General Permit
– January 2, 2015 Page 24 Table 3: Additional Benchmarks and Sampling Requirements Applicable to Specific
Industries

Parameter Units Benchmark
Value Analytical
Method Laboratory Quantitation
Level a Minimum Sampling Frequency b 1. Chemical and Allied Products (28xx), Food and Kindred Products (20xx)

BOD 5 mg/L 30 SM 5210B 2 1/quarter
Nitrate + Nitrite Nitrogen , as N mg/L 0.68 SM4500
NO3

- E/F/H 0.10 1/quarter

Phosphorus,
Total mg/L 2.0 EPA 365.1 0.10 1/quarter

2. Primary Metals(33xx), Metals Mining (10xx), Automobile Salvage and Scrap Recycling (5015 and 5093), Metals Fabricating (34xx) Lead, Total μg/L 81.6 EPA 200.8 0.5 1/quarter
Petroleum Hydrocarbons (Diesel Fraction) mg/L 10 NWTPH

- Dx 0.1 1/quarter

3. Hazardous Waste Treatment, Storage and Disposal Facilities and Dangerous Waste Recyclers subject to the provisions of Resource Conservation and Recovery Act (RCRA) Subtitle C

Chemical Oxygen Demand (COD) mg/L 120 SM5220

- D 10 1/quarter

Total Ammonia (
as N ) mg/L 2.1 SM4500

- NH3

- GH 0.3 1/quarter

TSS mg/L 100 SM2540

- D 5 1/quarter Arsenic, Total μg/L 150 EPA 200.8 0.5 1/quarter Cadmium, Total μg/L 2.1 EPA 200.8 0.25 1/quarter Cyanide, Total μg/L 22 EPA 335.4 10 1/quarter Lead, Total μg/L 81.6 EPA 200.8 0.5 1/quarter Magnesium,
Total μg/L 64 EPA 200.8 50 1/quarter

Mercury, Total μg/L 1.4 EPA 1631E 0.0005 1/quarter Selenium, Total μg/L 5.0 EPA 200.8 1.0 1/quarter Silver, Total μg/L 3.8 EPA 200.8 0.2 1/quarter
Petroleum Hydrocarbons (Diesel Fraction) mg/L 10 NWTPH

- Dx 0.1 1/quarter

4

. Air Transportation c (45xx)

Total Ammonia (as N) mg/L 2.1 SM4500

- NH3

- GH 0.3 1/quarter

BOD 5 mg/L 30 SM 5210B 2 1/quarter
COD mg/L 120 SM5220

- D 10 1/quarter
Nitrate + Nitrite Nitrogen , as N mg/L 0.68 SM 4500

- NO3

- E/F/H 0.10 1/quarter

Petroleum Hydrocarbons (Diesel Fraction) mg/L 10 NWTPH

- Dx 0.1 1/quarterS5.C

Final Industrial Stormwater General Permit
– January 2, 2015 Page 25 Parameter Units Benchmark
Value Analytical
Method Laboratory Quantitation
Level a Minimum Sampling Frequency b 5. Timber Product Industry (24xx), Paper and Allied Products (26xx)

COD mg/L 120 SM5220

- D 10 1/quarter
TSS mg/L 100 SM2540

- D 5 1/quarter 6. Transportation (40xx

– 44xx , except 4221

- 25), Petroleum Bulk Stations and Terminals ( 5171)

Petroleum Hydrocarbons (Diesel Fraction) mg/L 10 NWTPH

- Dx 0.1 1/quarter

a. The Permittee shall ensure laboratory results comply with the quantitation level (QL) specified in the table. However, if an alternate method from 40 CFR Part 136 is sufficient to produce measurable results in the sample, the Permittee may use that method for analysis. If the Permittee uses an alternative method it must report the test method and QL on the DMR. If the Permittee is unable to obtain the required QL due to matrix effects, the Permittee must report the matrix

- specific method detection level (MDL) and QL on the DMR.

b. 1/quarter means at least one sample taken each quarter, year

- round

.

c. For airports where a single Permittee , or a combination of permitted facilities use more than 100,000 gallons of glycol

- based deicing chemicals and/or 100 tons or more of urea on an average annual basis, monitor these
additional five parameters in those discharge point s that collect runoff from areas where deicing activities occur (SIC 4512

- 4581).

C. Landfills and Airports Subject to Effl uent Limitation Guidelines

1. Permittees with discharges from the following activities shall comply with the
effluent limits and monitor as specified in Condition S4 and Tables 4 and 5

. 2. The discharge of the pollutant s at a level more than that identified and authorized by this permit for these activities shall constitute a violation of the terms and conditions of this permit.

3. Permittees operating non

- hazardous waste landfill s subject to the provisions of 40
C

FR Part 445 Subpart B shall not exceed the effluent limits 4 listed in Table 4

.

4 As set forth in 40 CFR Part 445 Subpart B, these numeric effluent limits apply to contaminated stormwater discharges from Municipal Solid Waste Landfills that have not been closed in accordance with 40 CFR 258.60, and
to contaminated stormwater discharges from those landfills that are subject to the provisions of 40 CFR Part 257 except for discharges from any of the following facilities: (a) landfills operated in conjunction with other industrial

or commer cial operations, when the landfill receives only wastes generated by the industrial or commercial operation directly associated with the landfill; (b) landfills operated in conjunction with other industrial or commercial operations, when the landfill receives wastes generated by the industrial or commercial operation directly associated with the landfill and also receives other wastes, provided that the other wastes received for disposal are generated by a facility that is subject to the same provisions in 40 CFR Subchapter N as the industrial or commercial operation, or that the other wastes received are of similar nature to the wastes generated by the industrial or commercial operation; (c) landfills operated in conjunction with CWT facilities subject to 40 CFR Part 437, so long as the CWT facility commingles the landfill wastewater with other non

- landfill wastewater for discharge. A landfill directly associated with a CWT facility is subject to this part if the CWT facility discharges landfill

wastewater separately from other CWT wastewater or commingles the wastewater from its landfill only with wastewater from other landfills; or (d) landfills operated in conjunction with other industrial or commercial operations when the landfill receives wastes from public service activities, so long as the company owning the landfill does not receive a fee or other remuneration for the disposal service.S5.C

Final Industrial Stormwater General Permit
– January 2, 2015 Page 26 Table 4: Effluent Limits Applicable to Non -Hazardous Waste Landfills Subject to 40 CFR Part 445 Subpart B

Parameter Units Average Monthly a Maximum Daily b Analytical
Method c Laboratory Quantitation
Level d Minimum Sampling Frequency e

BOD 5 mg/L 37 140 EPA 405.1

or SM 5210B 2 1/quarter

TSS mg/L 27 88 SM2540

- D 5 1/quarter
Total Ammonia (as N) mg/L 4.9 10 SM4500

- NH3

- GH. 0.3 1/quarter Alpha Terpineol μg/L 16 33 EPA 625 5 1/quarter
Benzoic Acid μg/L 71 120 EPA 625 50 1/quarter

p

- Cresol (4

- methylphenol) μg/L 14 25 EPA 8270D 10 ug/L 1/quarter
Phenol μg/L 15 26 EPA 625 4.0 1/quarter Zinc, Total μg/L 110 200 EPA 200.8 2.5 1/quarter pH SU Between 6.0 and 9.0 Meter ±0.1 1/quarter

a. Average monthly effluent limit means the highest allowable average of daily discharges over a calendar month

. To calculate the discharge value to compare to the limit, you add the value of each daily discharge measured during a calendar month and divide this sum by the total number of daily discharges measured

. If only one sample is taken during the calendar month, the average monthly effluent limitation applies to that sample

. If only one sampl e is taken during the reporting period, the average monthly effluent limitation applies to that sample.

b. Maximum daily effluent limit means the highest allowable daily discharge

. The daily discharge means the discharge of a pollutant measured during a calendar day

. The daily discharge is the average measurement of the pollutant over the day; this does not apply to pH.

c. Or other equivalent EPA

- approved method with the same or lower quantitation level.

d. The Permittee shall ensure l aboratory results comply with the quantitation level (QL) specified in the table

. However, if an alternate method from 40 CFR Part 136 is sufficient to produce measurable results in the sample

, the Permittee may use that method for analysis. If the Permittee uses an alternative method it must report the test method and QL on the discharge monitoring report.

e. 1/quarter means at least one sample taken each quarter, year

- round.S5. C.4

Final Industrial Stormwater General Permit
– January 2, 2015 Page 27 4. Permittees operating airlines and airports subject to provisions of 40 CFR Part 449 shall comply with the following:

a. Airfield Pavement Deicing . Existing and new primary airports with 1,000 or more annual jet departures ( annual non-propeller aircraft departures) that discharge
wastewater associated with airfield pavement deici ng commingled with
stormwater must either use non

- urea

- containing deicers 5 , or meet the effluent
limit in Table 5 at every discharge point , prior to any dilution or any commingling with any non

- deicing discharge.

T able 5: Effluent Limit Applicable to Airports Subject to 40 CFR Part 449

Parameter Units Maximum Daily a Analytical
Method b Laboratory Quantitation
Level c Minimum Sampling Frequency d

Total Ammonia (as N) mg/L 14.7 SM4500

- NH3

- GH. 0.3 1/quarter

a. Maximum daily effluent limit means the highest allowable daily discharge

. The daily discharge means the discharge of a pollutant measured during a calendar day

. The daily discharge is the average measurement of the pollutant over the day.

b. Or other equivalent EPA

- approved method with the same or lower quantitation level.

c. The Permittee shall ensure laboratory results comply with the quantitation level (QL) specified in the table. However, if an alternate method from 40 CFR Part 136 is sufficient to produce me asurable results in the sample, the Permittee may use that method for analysis. If the Permittee uses an alternative method it must report the test method and QL on the DMR. If the Permittee is unable to obtain the required QL due to matrix effects, the Pe rmittee must report the matrix

- specific method detection level (MDL) and QL on the DMR.

d. 1/quarter means at least one sample taken each quarter, year

- round.

D. Conditionally Authorized Non- Stormwater Discharges

1. The categories and sources of non- stormwater discharges identified in Condition S5. D.2, below, are conditionally authorized, provided:

a. The discharge is otherwise consistent with the terms and conditions of this permit, including Condition S5, S6 and S10.

b. The Permittee conducts the following assess ment for each non- stormwater discharge (except for S5.D.2.a & f) and documents the assessment in the SWPPP,
consistent with Condition S3.B.2. The Permittee shall:

i. Identify each source.

ii. Identify the location of the discharge into the stormwater collection system

. iii. Characterize the discharge including estimated flows or flow volume, and likely pollutant s which may be present

. iv. Evaluate and implement available and reasonable source control BMPs to reduce or eliminate the discharge

.

5 Affected Permittee s must certify in its annual report that it does not use airfield deicing products that contai n urea, or meet the numeric limit in Table 5 (Condition S9.B.4).S5. D.1.v

Final Industrial Stormwater General Permit
– January 2, 2015 Page 28 v. Evaluate compliance of the discharge with the state water quality standards

. vi. Identify appropriate BMPs for each discharge to control pollutant s and or
flow volumes.

2. Conditionally authorized non- stormwater discharges include:

a. Discharges from fire fighting activities

. b. Fire protection system flushing, testing, and maintenance.

c. Discharges of potable water including water line flushing, provided that water line flushing must be de-chlorinated prior to discharge.

d. Uncontaminated air conditioning or compressor condensate.

e. Landsca pe watering and i rrigation drainage.

f. Uncontaminated ground water or spring water.

g. Discharges associated with dewatering of foundations, footing drains, or utility vaults where flows are not contaminated with process materials such as solvents

. h. Incidental windblown mist from cooling towers that collects on rooftops or areas adjacent to the cooling tower . This does not include intentional discharges from cooling towers such as piped cooling tower blow down or drains.

E. Prohibited Discharges

Unless authorized by a separate NPDES or state waste discharge permit, the following discharges are prohibited:

1. The discharge of process wastewater is not authorized. Stormwater that commingles
with process wastewater is considered process wastewater

. 2. Illicit discharges are not authorized by this permit. Conditionally authorized nonstormwater discharges in compliance with Condition S5.D are not illicit discharges

.
F. General Prohibitions

Permittees shall manage stormwater to prevent the discharge of:

1. Synthetic, natural or processed oil or oil-containing products as identified by an oil
sheen ; and

2. Trash and f loating debris

.

S6. DISCHARGES TO IMPAIRED WATERS

A. General Requirements for Discharges to Impaired Waters

Permittees that discharge to a n impaired waterbody , either directly or indirectly through a stormwater drainage system, shall conduct sampling and inspections in accordance with Conditions S4, S5, S6 , and S7.S6.B

Final Industrial Stormwater General Permit
– January 2, 2015 Page 29 B. Eligibility for Coverage of New Discharges to Impaired Waters

Facilities that meet the definiti on of “ new discharger ” and discharge to a 303(d)- listed waterbody (Category 5), a n impaired waterbody with an applicable TMDL (Category 4A) , or a pollution control program for sediment cleanup ( i.e., a Category 4B sediment

impaired waterbody) are not eligible for coverage under this permit unless the facility :

1. Prevents all exposure to stormwater of the pollutant (s) for which the waterbody is impaired, and retains documentation of procedures taken to prevent exposure onsite
with its SWPPP; or

2. Documents that the pollutant (s) for which the waterbody is impaired is not present at
the facility , and retains documentation of this finding with the SWPPP; or

3. Provides Ecology with data to support a showing that the discharge is not expected to

cause or contribute to an exceedance of a water quality standard, and retain such data
onsite with its SWPPP

. The facility must provide data and other technical information

to Ecology sufficient to demonstrate:

a. For discharges to waters without an EPA approved or established TMDL , that the discharge of the pollutant for which the water is impaired will meet instream water quality criteria at the point of discharge to the waterbody; or

b. For discharges to waters with an EPA approved or established TMDL , that there are sufficient remaining wasteload allocations in an EPA approved or established
TMDL to allow industrial stormwater discharge and that existing dischargers to the waterbody are subject to compliance schedules designed to bring the waterbody i nto attainment with water quality standards

. Facilities are eligible for coverage under this permit if Ecology issues permit coverage based upon an affirmative determination that the discharge will not cause or contribute to the existing impairment.

C. Additional Sampling Requirements and Effluent Limits for Discharges to Certain Impaired Waters and Puget Sound Sediment Cleanup Sites

1. Permittees discharging to a 303(d)- listed waterbody (Category 5) , either directly or indirectly through a stormwater drainage system, shall comply with the applicable sampling requirements and numeric effluent limits in Table 6

. If a discharge point is subject to an impaired waterbody effluent limit (Condition S6.C) for a parameter that also has a benchmark, the effluent limit supersedes the benchmark

.

a. Facilities subject to these limits include, but may not be limited to, facilities listed in Appendix 4.

b. For purposes of this condition, “applicable sampling requirements and effluent limits” means the sampling and effluent limits in Table 6 that correspond to the specific parameter(s) the receiving water is 303(d)- listed for at t he time of permit coverage, or Total Suspended Solids (TSS) if the waterbody is 303(d)- listed (Category 5) for sediment quality at the time of permit coverage

.S6.C .1.c

Final Industrial Stormwater General Permit
– January 2, 2015 Page 30 c. For discharge points not subject to a TSS effluent limit under the 2010 ISGP, the
TSS effluent limit in Table 6 do es not become effective until January 1, 2017. However, TSS sampling and reporting is effective January 2, 2015 ; or , for Permittees with an effective date of permit coverage after January 2, 2015, the
fir st full quarter following permit coverage

.
Table 6 : Sampling and Effluent Limits Applicable to Discharges to 303(d)

- listed Waters

Parameter Units Maximum Daily a

Analytical Method b Laboratory Quantitation
Level c Sampling Frequency d Freshwater Marine Turbidity NTUs 25 25 EPA 180.1 Meter 0.5 1/quarter pH SU j Between 7.0
and 8.5 Meter ±0. 1 1/quarter

Fecal Coliform
Bacteria # colonies/
100 mL i i SM 9222D 20 CFU/
100 mL 1/quarter

TSS f mg/L 30 30 SM2540

- D 5 1/quarter Phosphorus, Total mg/L g g EPA 365.1 0.01 1/quarter
Total Ammonia ( as N ) mg/L g g SM 4500 NH 3

- GH 0.3 1/quarter Copper, Total μg/L g g EPA 200.8 2.0 1/quarter Lead, Total μg/L g g EPA 200.8 0.5 1/quarter Mercury, Total μg/L 2.1 1.8 EPA1631E 0.0005 1/quarter Zinc, Total μg/L g g EPA 200.8 2.5 1/quarter Pentachlorophenol μg/L 9 h g EPA 625 1.0 1/quarter

a Maximum daily effluent limit means the highest allowable daily discharge

. The daily discharge means the discharge of a pollutant measured during a calendar day

. The daily discharge is the average measurement of the pollutant over the day; this does not apply to pH.

b. Or other equivalent method with the same reporting level.

c The Permittee shall ensure laboratory results comply with the quantitation level (QL) specified in the table. However, if an alternate method from 40 CFR Part 136 is sufficient to produce measurable results in the sample, the Permittee may use that method for analysis. If the Permittee uses an alternative method it must report the test meth od and QL on the DMR. If the Permittee is unable to obtain the required QL due to matrix effects, the Permittee must report the matrix

- specific method detection level (MDL) and QL on the DMR.

d. 1/quarter means at least one sample taken each quarter, e.g., Q1 = Jan 1
– March 31, Q2 = April 1
– June 30

.

e Permittees shall use either a calibrated pH meter consistent with EPA 9040 or an approved state method.

f. Permittees who discharge to a waterbody 303(d)

- listed (Category 5) for sediment quality shall sample the discharge for TSS.

g. Site

- specific effluent limitation will be assigned at the time of permit coverage.

h. Based on a pH of 7.0.

i. A numeric effluent limit does not apply, but Permittee s must sample according to Table 6 . In addition, the following mandatory BMPs shall be incorporated into the SWPPP and implemented; the Permittee must : 1) Use all known, available and reasonable methods to prevent rodents, birds, and other animals from feeding/nesting/roost ing at the facility. Nothing in this section shall be construed as allowing violations of any applicable federal, state or local statutes, ordinances, or regulations including the Migratory Bird Treaty Act

. 2) P erform at least one annual dry weather inspection of the stormwater system to identify and eliminate sanitary sewer cross

- connections

. 3) Install structural source control BMPs to address on

- site activities and sources that could cause bacterial contamination (e.g., dumpsters, compost piles, fo od waste, and animal products)

. 4) Implement operational source control BMPs to prevent bacterial contamination from any known sources of fecal coliform bacteria (e.g., animal waste)

.S6.C .2

Final Industrial Stormwater General Permit
– January 2, 2015 Page 31 5) Conduct a dditional bacteria

- related sampling and/or BMPs, if ordered by Ecology on a case

- by

- case basis.

j. The effluent limit for a Permittee who discharges to a freshwater body 303(d)

- listed for pH is: Between 6.0 and 8.5, if the 303(d)

- listing is for high pH only; Between 6.5 and 9.0, if the 303(d)

- listing is for low pH only; and Between 6.5 and 8.5 if the 303(d)

- listing is for both low and high pH. All pH effluent limits are applied end

- of

pipe

.

2. Permittees discharging to a Puget Sound S ediment Cleanup S it e 6

, either directly or indirectly through a stormwater drainage system, shall comply with this section:

a. Permittees shall sample the discharge for Total Suspended Solids ( TSS) in
accordance with Table 7

. b. If the waterbody is listed within Category 5 (sediment medium) where t he outfall discharges to the waterbody, the discharge is subject to the TSS numeric effluent
limit in S6.C.1.c and Table 6

.

c. If the waterbody is not listed within Category 5 (sediment medium) where the outfall discharges to the waterbody, the discharge is subject to the TSS
benchmark in Table 7 . If the discharge is subject to more than one TSS benchmark value, the lower benchmark supersedes the higher one. Beginning January 1, 2017, if a discharge exceeds the TSS benchmark , the Permittee shall comply with Condition S8.

Table 7: Benchmarks and Sampling Requirements Applicable to Discharges to Puget Sound Sediment Cleanup Sites that are not Category 5 for Sediment Quality

Parameter Units Benchmark
Value a Analytical
Method Laboratory Quantitation
Level b Minimum Sampling Frequency c

TSS mg/L 30 SM2540-D 5 1/quarter

a. Permittees sampling more than once per quarter shall average the sample results and compare the average value
to the benchmark to determine if it the discharge has exceeded the benchmark value. However, if Permittees collect more than one sample during a 24

- hour period, they must first calculate the daily average of the individual grab sample results collected during that 24

- hour period; then use the daily average to calculate a quarterly average.

b. The Permittee shall ensure laboratory results comply with the quantitation level (QL) specified in the table. However, if an alternate method from 40 CFR Part 136 is sufficient to produce measurable results in the sample, the Permittee may use that method for analysis. If the Permittee uses an alternative method it must report the test method and QL on the DMR. If the Permittee is unable to obtain the required QL due t o matrix effects, the Permittee must report the matrix

- specific method detection level (MDL) and QL on the DMR.

c. 1/quarter means at least one sample taken each quarter, year

- round.

6 Puget Sound Sediment Cleanup Site means: Category 4B (Sediment) portions of Budd Inlet (Inner), Commencement Bay (Inner), Commencement Bay (Outer), Dalco Passage and East Passage, Duwamish Waterway (including East and West Waterway), Eagle Harbor, Elliot Bay, Hood Canal (North), Liberty Bay, Rosario Strait, Sinclair Inlet, and Thea Foss Waterway; Category 5 (Sediment) portions of the Duwamish Waterway (including
Eas t and West Waterway), and Port Gardner and Inner Everett Harbor; and the Port Angeles Harbor sediment cleanup area, as mapped on Ecology’s ISGP website. All references to Category 4B and 5 pertain to the 2012 EPA

approved Water Quality Assessment.S6.C .2.d

Final Industrial Stormwater General Permit
– January 2, 2015 Page 32 d. Permittees shall remove accumulated solids from storm drain lines (inclu ding inlets, catch basins, sumps, conveyance lines, and oil/water separators) owned or controlled by the Permittee at least once prior to October 1, 2016.

Permittees shall conduct line cleaning operations (e.g., jetting, vacuuming, removal, loading, stora ge, and/or transport ) using BMPs to prevent discharg es of
storm drain solids to surface waters of the state

. Removed storm drain solids and liquids shall be disposed of in accordance with applicable laws and regulations and documented in the SWPPP.

i. If a Permittee can demonstrate that line cleaning operations are not feasible by the October 1, 2016 deadline, Ecology may approve a time extension by approving a modification of permit coverage.

ii. If a Permittee can demonstrate, based on video inspection, in- lin e storm drain solids sampling, or other documentation, that storm drain line cleaning is not necessary to prevent downstream sediment contamination

or recontamination , Ecology may waive this requirement by approving a modification of permit coverage.

iii. Requ ests for line cleaning waivers or time extensions must be accompanied by a modification of coverage form, and a detailed
technical basis to support the request . The due date for line cleaning
waiver and extension requests is May 15, 2016.

e. Permittees shall sample and analyze storm drain solids in accordance with Table 8 at least once prior to October 1, 2016. Storm drain s olids must be collected/sampled from a representative catch basin, sump, pipe, or other feature within the storm drain system that corresponds to the discharge point where Total Suspended Solids (TSS) samples are collected per Condition S6.C. Samples may be either a single grab sample or a composite sample. Samples must be representative of the storm drain solids gen erated and accumulated in the facility's drainage system. To the extent possible, sample locations must exclude portions of the drainage system affected by water from off -site sources (e.g., run- on from off

- site properties, tidal influence, back flow).

i. If a Permittee can demonstrate that storm drain solids sampling and analysis is not feasible by the October 1, 2016 deadline, Ecology may approve a time extension by approving a modification of permit coverage.

ii. If a Permittee can demonstrate that storm drain s olids sampling and analysis is not feasible or n ot necessary , Ecology may waive this requirement by approving a modification of permit coverage.

iii. Requests for storm drain solids sampling and analysis waivers or time extensions must be accompanied by a modification of coverage form, and a detailed technical basis to support the request. The due date for solids sampling and analysis waiver and extension requests is May 15, 2016.S6.C .2.e.iii

Final Industrial Stormwater General Permit
– January 2, 2015 Page 33 Table 8: Sampling and Analytical Procedures for Storm Drain Solids

Analyte Meth od in Sediment Quantitation
Level a

Conventional Parameters

Percent total solids SM 2540G, or ASTM Method D 2216 NA

Total organic carbon Puget Sound Estuary Protocols (PSEP 1997 ) , or EPA 9060 0.1%

Grain size Ecology Method Sieve and Pipette (ASTM 1997),
ASTMD422

, or PSEP 1986/2003 NA

Metals

Antimony, Total EPA Method 200.8 (ICP/MS) , EPA Method 6010
or EPA Method 6020 0.2 mg/kg dw b

Arsenic, Total EPA Method 200.8 (ICP/MS) , EPA Method 6010
or EPA Method 6020 0.1 mg/kg dw

Beryllium, Total EPA Method 200.8 (ICP/MS) , EPA Method 6010
or EPA Method 6020 0.2 mg/kg dw

Cadmium, Total EPA Method 200.8 (ICP/MS) , EPA Method 6010
or EPA Method 6020 0.2 mg/kg dw

Chromium, Total EPA Method 200.8 (ICP/MS) , EPA Method 6010
or EPA Method 6020 0. 5 mg/kg dw

Copper, Total EPA Method 200.8 (ICP/MS) , EPA Method 6010
or EPA Method 6020 0.2 mg/kg dw

Lead, Total EPA Method 200.8 (ICP/MS) , EPA Method 6010
or EPA Method 6020 0.2 mg/kg dw

Mercury, Total EPA Method 1631E, or EPA Method 7471B 0.005 mg/kg dw

Nickel, Total EPA Method 200.8 (ICP/MS) , EPA Method 6010
or EPA Method 6020 0.1 mg/kg dw

Selenium, Total EPA Method 200.8 (ICP/MS) , EPA Method 6010
or EPA Method 6020 0.5 mg/kg dw

Silver, Total EPA Method 200.8 (ICP/MS) , EPA Method 6010
or EPA Method 6020 0.1 mg/kg dw

Thallium, Total EPA Method 200.8 (ICP/MS) , EPA Method 6010
or EPA Method 6020 0.2 mg/kg dw

Zinc, Total EPA Method 200.8 (ICP/MS) , EPA Method 6010
or EPA Method 6020 5.0 mg/kg dw

Organics

PAH compounds c EPA Method 8270 D 70 μg/kg dw

PCBs (aroclors) , Total d EPA Method 8082 10 μg/kg dw
Petroleum Hydrocarbons

NWTPH

- Dx NWTPH

- Dx 25.0

- 100.0 mg/kg dw

a. The Permittee shall ensure laboratory results comply with the quantitation level (QL) specified in the table. However, if an alternate method is sufficient to produce measurable results in the sample, the Permittee may use that method for analysis. If the Permittee uses an alternative method it must report the test method and QL onS6. C.2.f

Final Industrial Stormwater General Permit
– January 2, 2015 Page 34 the sediment monitoring report. All results shall be reported. For values below the QL, or where a QL is not specified, report results at the method detection level (MDL) from the lab and the qualifier of “U” for
undetected at that concentration. If the Permittee is unable to obtain the required QL due to matrix effects, the Permittee must report the matrix

- specific MDL and QL on the DMR.

b. dw = dry weight.

c. PAH compounds include: 1

- methylnaphthalene, 2

- methylnaphthalene, 2

- chloronaphthalene, acenaphthylene, acenaphthe ne , anthracene, benzo(a)anthracene, benzo(a)pyrene, benzo(b, k)fluoranthene, benzo(ghi)perylene, dibenzo(a,h)anthracene, dibenzofuran, carbazole, chrysene, fluoranthene, fluorene, indeno(1,2,3

- cd)pyrene, naphthalene, phenanthrene, and pyrene.

d. Total = sum of PCB aroclors 1016+1221+1232+1242+1248+1254+1260.

f. All storm drain solids sampling data shall be reported to Ecology on a Solids Monitoring Report (SMR) no later than the DMR due date for the reporting period in which the solids were sampled, in accordance with Condition S9.A. A copy of the lab report shall be submitted to Ecology with the SMR.

D. Requirements for Discharges to Waters with Applicable TMDLs

1. The Permittee shall comply with applicable TMDL determinations

. Applicable
TMDLs or TMDL determina tions are TMDL s which have been completed by the issuance date of this permit, or which have been completed prior to the date that the
Permittee's application is received by Ecology , whichever is later

. Ecology will list the Permittee’s requirements to com ply with this condition on the letter of permit

coverage.

2. TMDL requirements associated with TMDL s completed after the issuance date of this permit only become effective if they are imposed through an administrative order issued by Ecology

. 3. Where Ecology has established a TMDL wasteload allocation and sampling requirements for the Permittee's discharge, the Permittee shall comply with all requirements of the TMDL as listed in Appendix 5.

a. If a discharge point is subject to a TMDL

- related effluent limit (C ondition S6.D) for a parameter that als o has a benchmark (Condition S5), the effluent limit supersedes the benchmark

. 4. Where Ecology has established a TMDL general wasteload allocation for industrial

stormwater discharges for a parameter present in the Per mittee's discharge, but has not identified specific requirements, Ecology will assume the Permittee's compliance with the terms and conditions of the permit complies with the approved TMDL

. 5. Where Ecology has not established a TMDL wasteload allocation for industrial

stormwater discharges for a parameter present in the Permittee's discharge, but has not excluded these discharges, Ecology will assume the Permittee's compliance with the terms and conditions of this permit complies with the approved TMDL

. 6. Where a TMDL for a parameter present in the Permittee's discharge specifically precludes or prohibits discharges of stormwater associated with industrial activity

, the Permittee is not eligible for coverage under this permit.S7.A

Final Industrial Stormwater General Permit
– January 2, 2015 Page 35 S7. INSPECTIONS

A. Inspection Frequency and Personnel

1. The Permittee shall conduct and document visual inspections of the site each month.

2. The P ermittee shall ensure that inspections are conducted by qualified personnel

.
B. Inspection Components

Each inspection shall include :

1. Observations made at stormwater sampling locations and areas where stormwater associated with industrial activity is discharged off- site ; or discharged to waters of the

state

, or to a storm sewer system that drains to waters of the state

. 2. Observations for the presence of floating materials, visible oil sheen, discoloration, turbidity , odor, etc. in the stormwater discharge(s).

3. Observations for the presence of illicit discharges such as domestic wastewater

, noncontact cooling water , or proce ss wastewater (including leachate ).

a. If an illicit discharge is discovered, the Permittee shall notify Ecology within seven days.

b. The Permittee shall eliminate the illicit discharge within 30 days.

4. A verification that the descriptions of potential pollutant sources required under this permit are accurate.

5. A verification that the site map in the SWPPP reflects current conditions.

6. An assessment of all BMPs that have been implemented, noting all of the following:

a. Effectiveness of BMPs inspected.

b. Locati ons of BMPs that need maintenance.

c. Reason maintenance is needed and a schedule for maintenance.

d. Locations where additional or different BMPs are needed and the rationale for the
additional or different BMPs.

C. Inspection Results

1. The Permittee shall record t he results of each inspection in an inspection report or checklist and keep the records on- site , as part of the SWPPP, for Ecology review

. The Permittee shall ensure each inspection report documents the observations, verifications and assessments required in S7.B and includes:

a. Time and date of the inspection.

b. Locations inspected.

c. S tatement s that, in the judgment of 1) the person conducting the site inspection, and 2) the person described in Condition G2., the site is either in compliance or out of compliance with the terms and conditions of the SWPPP and this permit

.S7. C.1.d

Final Industrial Stormwater General Permit
– January 2, 2015 Page 36 d. A summary report and a schedule of implementation of the remedial actions that the Permittee plans to take if the site inspection indicates that the site is out of compliance

. The remedial actions taken must meet the requirements of the SWPPP and the permit.

e. Name, title, and signature of the person conducting site inspection; and the following statement: “I cert ify that this report is true, accurate, and complete, to the best of my knowledge and belief.”

f. Certification and signature of the person described in Condition G2.A, or a duly authorized representative of the facility , in accordance with Condition G2.B an d
D.

D. Reports of Non- Compliance

The Permittee shall prepare reports of non -compliance identified during an inspection in accordance with the requirements of Condition S9.E.

S8. CORRECTIVE ACTIONS

A. Implementation of Source Control and Treatment BMPs from Previou s Permit

In addition to the Corrective Action Requirements of S8.B- D, P ermittees shall implement any applicable Level 1, 2 or 3 Responses required by the previous Industrial Stormwater
General Permit (s)

. Permittees shall continue to operate and/or maintain any source control or treatment BMP s related to Level 1, 2 or 3 Responses implemented prior to the effective date of this permit.

B. Level One Corrective Actions
– Operational Source Control BMPs

Permittees that exceed any applicable benchmark value (s) in T able 2

, T able 3 and/or
Table 7 for any quarter shall complete a Level 1 Corrective Action for each parameter exceeded in accordance with the following:

1. Within 14 days of receipt of sampling results that indicate a benchmark exceedance
for a given quarter 7 ; or, for parameters other than pH or visible oil sheen, the end of the quarter, whichever is later :

a. Conduct an inspection to investigate the cause.

b. Review the SWPPP and ensure that it fully complies with Permit Condition S3, and contains the correct BMPs from the applicable Stormwater Management
Manual

.

c. Make appropriate revisions to the SWPPP to include additional Operational
Source Control BMPs with the goal of achieving the applicable benchmark value(s) in future discharges.

2. Summarize the Level 1 Corrective Actions in the Annual Report (Condition S9.B).

7 Based on quarterly average per Condition S5.A.3, S5.B.2 and/or S6.C.2.c. For pH and visible oil sheen, quarterly averaging is not allowed, so the 14 days begin upon receipt of a single benchmark exceedance.S8. B.3

Final Industrial Stormwater General Permit
– January 2, 2015 Page 37 3. Level One Deadline: The Permittee shall sign/certify and f ully implement the revised SWPPP according to Permit Condition S3 and the applicable Stormwater Management Manual as soon as possible, but no later than the DMR due date for the quarter the benchmark was exceeded

. C. Level Two Corrective Actions
– Structural Source Control BMPs

Permittees that exceed an applicable benchmark value in Table 2

, Table 3 and/or Table 7 (for a single parameter) for any two quarters during a calendar year shall complete a
Level 2 Corrective Action in accordance with S8.C. Alternatively, the Permittee may skip
Level 2 and complete a Level 3 Corrective Action in accordance with Condition S8.D.

1. Review the SWPPP and ensure that it fully complies with Permit Co ndition S3.

2. Make appropriate revisions to the SWPPP to include additional Structural Source
Control BMPs with the goal of achieving the applicable benchmark value (s) in future discharges

. 3. Summarize the Level 2 Corrective Actions (planned or taken) in the Annual Report (Condition S9.B).

4. Level 2 Deadline: The Permittee shall sign/certify and fully implement the revised SWPPP according to Permit Condition S3 and the applicable Stormwater Management Manual as soon as possible, but no later than August 31 st the following

year

.

a. If installation of necessary Structural Source Control BMPs is not feasible by August 31 st the following year, Ecology may approve additional time by approving a Modification of Permit Coverage

. b. If installation of Structural Source Control BMPs is not feasible or not necessary to prevent discharges that may cause or contribute to a violation of a water quality standard, Ecology may waive the requirement for additional Structural Source
Control BMPs by approving a Modification of Permit Coverage

.

c. To request a time extension or waiver, a Permittee shall submit a detailed explanation of why it is making the request (technical basis), and a Modification of Coverage form to Ecology in accordance with Condition S2.B, by May 15 th prior to Level 2 Deadline. Ecology will approve or deny the request within 60 days of receipt of a complete Modification of Coverage request.

d. While a time extension is in effect, benchmark exceedances (for the same parameter) do not count towards additional Level 2 or 3 Corrective Actions.

e. For the year following the calendar year the Permittee triggered a Level 2 corrective action, benchmark exceedances (for the same parameter) do not count
towards additional Level 2 or 3 Corrective Actions.

D. Level Three Corrective Actions
– Treatment BMPs

Permittees that exceed an applicable benchmark value in Table 2

, Table 3 and/or Table 7 (for a single parameter) for any three quarters during a calendar year shall complete aS8.D

Final Industrial Stormwater General Permit
– January 2, 2015 Page 38 Level 3 Corrective Action in accordance with S8.D. A Level 2 Corrective Action is not required.

1. Review the SWPPP and ensure that it fully complies with Permit Condition S3.

2. Make appropriate revisions to the SWPPP to include additional Treatment BMPs with the goal of achieving the applicable benchmark value(s) in future discharges. Revisions shall include additional operational and/or structural source control BMPs if necessary for proper performance and maintenance of Treatment BMPs

. A Qualified Industrial Stormwater Professional shall review the revised SWPPP, sign
the SWPPP Certification Form, and certify that it is reasonably expected to meet the ISGP benchmarks upon implementation. Upon written request Ecology may , one time during the permit cycle, waive this requirement on a case

- by

- case basis if a Permittee demonstrates to Ecology’s satisfaction that the proposed Level 3 treatment BMPs are reasonably expected to meet ISGP benchmarks upon implementation.

3. Before install ing treatment BMPs that require the site

- specific design or sizing of

structures , equipment, or processes to collect, convey, treat, reclaim, or dispose of industrial stormwater; the P ermittee shall submit an engineering report to Ecology for
review

.

a. The engineering report must include:

i. Brief summary of the treatment alternatives considered and why the proposed option was selected. Include cost estimates of ongoing operation and maintenance, including disposal of any spent media ; ii. The basic design data , including char acterization of stormwater influent, and sizing calculations of the treatment units;
iii. A description of the treatment process and operation, including a flow diagram;
iv. The amount and kind of chemicals used in the treatment process, if any.
Note: Use of stor mwater treatment chemicals requires submittal of Request for Chemical Treatment Form;

v. Results to be expected from the treatment process including the predicted stormwater discharge characteristics;
vi. A statement, expressing sound engineering justification through the use of pilot plant data, results from similar installations, and/or scientific evidence that the proposed treatment is reasonably expected to meet the permit benchmarks; and
vii. Certification by a licensed professional engineer

. b. The engineering re port shall be submitted no later than the May 15 th prior to the Level 3 deadline, unless an alternate due date is specified in an order.

c. An Operation and Maintenance Manual (O& M Manual) shall be submitted to Ecology no later than 30 days after construction/installation is complete; unless an alternate due date is specified in an order

.S8.D.4

Final Industrial Stormwater General Permit
– January 2, 2015 Page 39 4. Summarize the Level 3 Corrective Actions (planned or taken) in the Annual Report (Condition S9.B ). Include information on how monitoring, assessment or evaluation information was (or will be) used to determine whether existing treatment BMPs will be modified/enhanced, or if new/additional treatment BMPs will be installed.

5. Level 3 Deadline : The Per mittee shall sign/certify and f ully implement the revised SWPPP according to Permit Condition S3 and the applicable Stormwater Management Manual as soon as possible, but no later than Septembe r 30 th the following year.

a. If installation of necessary Treatment BMPs is not feasible by the Level 3
Deadline ; Ecology ma y approve additional time by approving a Modification of Permit Coverage

. b. If installation of Treatment BMPs is not feasible or not necessary to prevent discharges that may cause or contribute to violation of a water quality standard, Ecology may waive the requirement for Treatment BMPs by approving a Modification of Permit Coverage

.

c. To request a time extension or waiver, a Permittee shall submit a detailed explanation of why it is making the request (technical basis), and a Modification of Coverage form to Ecology in accordance with Condition S2.B, by May 15 th prior to the Level 3 Deadline

. Ecology will approve or deny the request within 60 days of receipt of a complete Modification of Coverage request.

d. Wh ile a time extension is in effect, benchmark exceedances (for the same parameter) do not count towards additional Level 2 or 3 Corrective Actions.

e. For the year following the calendar year the Permittee triggered a Level 3 corrective action, benchmark exceedances (for the same parameter) do not count
towards additional Level 2 or 3 Corrective Actions.

S9. REPORTING AND RECORD KEEPING

A. Discharge Monitoring Reports

1. The Permittee shall submit sampling data obtained during each reporting period on a Discharge Monitoring Report (DMR) or a Solids Monitoring Form (SMR) 8 form provided, or otherwise approved, by Ecology

. 2. Upon permit coverage, the Permittee shall ensure that DMRs are submitted to Ecology by the DMR Due Dates below :

Table 9 : Reporting Dates and DMR Due Dates

Reporting Period Months DMR Due Date

1 st January

- March May 15
2 nd April

- June August 15
3 rd July

- Sept November 15
4 th October

- December February 15

8 SMR required if C ondition S6.C.2 applies.S9. A.3

Final Industrial Stormwater General Permit
– January 2, 2015 Page 40 3. DMRs and SMRs shall be submitted electronically using Ecology ’s Water Quality Permitting Portal – Discharge Monitoring Report (DMR) application , unless a waiver from electronic reporting has been granted (e.g., if a Permittee does not have
broadband internet access)

. SMR forms , identified as a single sample DMR type, are included with the quarterly DMR forms on the Portal. If a waiver has been granted, reports must be postmarked or delivered to the following address by the due date:

Department of Ecology Water Quality Program
– Industrial Stormwater
PO Box 47696 Olympia, WA 98504-7696

4. The Permittee shall submit a DMR each reporting period, whether or not the facility has discharged stormwater from the site. For Permittees that receive permit coverage after January 2, 2015, the first reporting period is the first full quarter following the effective date of permit coverage

.

a. If no stormwater sample was obtained from the site during a given rep orting period, the Permittee shall submit the DMR form indicating “no sample obtained”, or “no discharge during the quarter”, as applicable.

b. If a Permittee has suspended sampling for a parameter due to consistent attainment, the Permittee shall submit a DM R and indicate that it has achieved
Consistent Attainment for that parameter(s)

. 5. The Permittee must use the Water Quality Permitting Portal
– Permit Submittals application (unless otherwise specified in the permit) to submit all other written permit -requi red reports by the date specified in the permit unless a waiver has been granted under S9.A. If a waiver has been granted, DMRs must be postmarked or delivered to the address listed in S9.A.3 by the due date.

B. Annual Reports

1. The P ermittee shall submit a complete and accurate Annual Report to the Department
of Ecology no later than May 15 th of each year using Ecology ’s Water Quality Permitting Portal
– Permit Submittals application , unless a waiver from electronic reporting has been granted according to S 9.A.3. Annual Reports are not required if
the Permittee didn’t have permit coverage during the previous calendar year.

2. The annual report shall include corrective action documentation as required in S8.BD. If corrective action is not yet completed at the time of submission of this annual report, the Permittee must describe the status of any outstanding corrective action(s).

3. Permittees shall include the following information with each annual report

. The
Permittee shall :

a. Identify the condition triggering the need for corrective action review

. b. Describe the problem(s) and identify the dates they were discovered.

c. Summarize any Level 1, 2 or 3 corrective actions completed during the previous calendar year and include the dates it completed the corrective actions

.S9. B.3.d

Final Industrial Stormwater General Permit
– January 2, 2015 Page 41 d. Describe the status of any Level 2 or 3 corrective actions triggered during the previous calendar year, and identify the date it expects to complete corrective
action s.

e. Primary airport Permittee s with at least 1,000 annual jet departures shall inc lude a certification statement in each annual report that it does not use airfield deicing products that contain urea. Alternatively, Permittees shall meet the numeric
effluent limit for ammonia in Condition S5.C. Table 5

. 4. Permittee s shall retain a copy of all annual reports onsite for Ecology review.

C. Records Retention

1. The Permittee shall retain the following documents onsite for a minimum of five

years :

a. A copy of this permit.

b. A copy of the permit coverage letter.

c. Records of all sampling information specified in Condition S4.B.3.

d. Inspection reports including documentation specified in Condition S7.

e. Any other documentation of compliance with permit requirements.

f. All equipment calibration records.

g. All BMP maintenan ce records.

h. All original recordings for continuous sampling instrumentation.

i. Copies of all laboratory reports as described in Condition S3.B.4.

j. Copies of all reports required by this permit.

k. Records of all data used to complete the application for this permit.

2. The Permittee shall extend the period of records retention during the course of any unresolved litigation regarding the discharge of pollutant s by the Permittee, or when requested by Ecology

. 3. The P ermittee shall make all plans, documents and record s required by this permit immediately available to Ecology or the local jurisdiction upon request; or within 14 days of a written request from Ecology

.
D. Additional Sampling by the Permittee

If the Permittee samples any pollutant at a designated sampling po int more frequently than required by this permit, then the Permittee shall include the results in the calculation and reporting of the data submitted in the Permittee's DMR.

I f Permittees collect more than one sample during a 24 -hour period, they must fir st calculate the daily average of the individual grab sample results collected during that 24-hour period; then use the daily average to calculate a quarterly average.S9.E

Final Industrial Stormwater General Permit
– January 2, 2015 Page 42 E. Reporting Permit Violations

1. In the event the Permittee is unable to comply with any of the terms and conditions of this permit which may endanger human health or the environment, or exceed any numeric effluent limitation in the permit, the Permittee shall , upon becoming aware of
the circumstances :

a. Immediately take action to minimize potential pollution or otherwise stop the noncompliance and correct the problem.

b. Immediately notify the appropriate Ecology regional office of the failure to comply : • Central Region at (509) 575-2490 for Benton, Chelan , Douglas, Kittitas, Klickitat, Okanogan, or Yakima County.

• Eastern Region at (509) 329-3400 for Adams, Asotin, Columbia, Ferry, Franklin, Garfield, Grant, Lincoln, Pend Oreille, Spokane, Stevens, Walla Walla, or Whitman County.

• Northwest Region at (425) 649-7000 for Island, King, Kitsap, San Juan, Skagit, Snohomish, or Whatcom County.

• Southwest Region at (360) 407-6300 for Clallam, Clark, Cowlitz, Grays Harbor, Jefferson, Lewis, Mason, Pacific, Pierce, Skamania, Thurston, or Wahkiakum County.

c. Submit a detailed written report to Ecology within 5 days of the time the
Permittee becomes aware of the circumstances unless Ecology requests an earlier submission. The report shall be submitted using Ecology ’s Water Quality Permitting Portal
– Permit Submittals application , unless a waiver from electronic reporting has been granted according to S9.A.3. The Permittee's report shall
contain:

i. A description of the noncompliance, including exact dates and times.

ii. Whether the noncompliance has been corrected and, if not, when the noncompliance will be corrected.

iii. The steps taken or planned to reduce, eliminate, and prevent reoccurrence of the noncompliance.

d. Upon request of the Permittee , Ecology may waive the requirement for a written report on a case

- by

- case basis, i f the immediate notification (S9.E.1.b) is received by Ecology within 24 hours.

2. Complianc e with the requirements of this section does not relieve the Permittee from responsibility to maintain continuous compliance with the terms and conditions of this perm it or the resulting liability for failure to comply.S9.F

Final Industrial Stormwater General Permit
– January 2, 2015 Page 43 F. Public Access to SWPPP

The Permittee shall provide access to, or a copy of, the SWPPP to the public when requested in writing. Upon receiving a written request from the public for the SWPPP,
the Permittee shall:

1. Provide a copy of the SWPPP to the requestor within 14 days of receipt of the written request; or

2. Notify the requestor within ten days of receipt of the written request of the location
and times within normal business hours when the reques tor may view the SWPPP

, and provide access to the SWPPP within 14 days of receipt of the written request; or

3. Provide a copy of the plans and records to Ecology

, where the requestor may view the records, within 14 days of a request; or may arrange with the requestor for an alternative, mutually agreed upon location for viewing and/or copying of the plans
and records . If access to the plans and records is provided at a location other than at

an Ecology office, the Permittee will provide reasonable access to copying services
for which it may charge a reasonable fee.

S10. COMPLIANCE WITH STANDARDS

A. Discharges shall not cause or contribute to a violation of Surface Water Quality
Standards (Chapter 173-201A WAC), Ground Water Quality Standards (Chapter 173- 200 WAC), Sediment Management Standards (Chapter 173-204 WAC), and human
health

- based criteria in the National Toxics Rule ( 40 CFR 131.36). Discharges that are not in compliance with these standards are prohibit ed.

B. Ecology will presume compliance with water quality standards , unless discharge monitoring data or other site specific information demonstrates that a discharge causes or
contributes to violation of water quality standards , when the P ermittee is:

1. In ful l compliance with all permit conditions, including planning, sampling, monitoring, reporting, and recordkeeping conditions.

2. Fully implementing storm water best management practices contained in storm water technical manuals approved by the department, or p ractices that are demonstrably equivalent to practices contained in storm water technical manuals approved by Ecology , including the proper selection, implementation, and maintenance of all applicable and appropriate best management practices for on

- site p ollution control.

C. Prior to the discharge of stormwater and non- stormwater to waters of the state , the Permittee shall apply all known and reasonable methods of prevention, control, and treatment ( AKART ). To comply with this condition, the Permittee shall p repare and implement an adequate SWPPP, with all applicable and appropriate BMPs, including the BMPs necessary to meet the standards identified in Condition S10.A, and shall install and maintain the BMPs in accordance with the SWPPP, applicable SWMMs, and the terms and conditions of this permit.S 11 .A

Final Industrial Stormwater General Permit
– January 2, 2015 Page 44 S11. PERMIT FEES

A. The Permittee shall pay permit fees assessed by Ecology and established in Chapter
173-224 WAC.

B. Ecology will continue to assess permit fees until it terminates a permit in accordance with Special Condition S13 or revoked in accordance with General Condition G5.

S12. SOLID AND LIQUID WASTE MANAGEMENT

The Permittee shall not allow solid waste material or leachate to cause violations of the State
Surface Water Quality Standards (Chapter 173-201A WAC), the Ground Water Quality
Standards (Chapter 173-200 WAC) or the Sediment Management Standards (Chapter 173- 204 WAC).

S13. NOTICE OF TERMINATIO N (NOT)

A. Conditions for a NOT

Ecology may approve a Notice of Termination (NOT) request when the Permittee meets one or more of the following conditions:

1. All permitted stormwater discharges associated with industrial activity that are authorized by this permit cease because the industrial activity has ceased, and no significant materials or industrial pollutant s remain exposed to stormwater

. 2. The party that is responsible for permit coverage (signatory to application ) sells or otherwise legally transfers responsibility for the industrial activity

. 3. All stormwater discharges associated with ind ustrial activity are prevented because
the stormwater is redirected to a sanitary sewer , or discharged to ground (e.g.,
infiltration ).

B. Procedure for Obtaining Termination

1. The Permittee shall apply for a NOT on a form specified by Ecology (NOT Form).

2. The Permittee seeking permit coverage termination shall sign the NOT in accordance with Condition G2. of this permit.

3. The Permittee shall submit the completed NOT form to Ecology at the address in
Condition S9.A.5.G1

Final Industrial Stormwater General Permit
– January 2, 2015 Page 45 GENERAL CONDITIONS

G1. DISCHARGE VIOLATIONS

All discharges and activities authorized by this general permit shall be consistent with the
terms and conditions of this general permit

. Any discharge of any pollutant more frequently than, or at a level in excess of that identified and authorized by the general permit , shall constitute a violation of the terms and conditions of this permit.

G2. SIGNATORY REQUIREMENTS

A. All permit applications shall be signed:

1. In the case of corporations, by a responsible corporate officer

. 2. In the case of a partnership, by a general partner of a partnership.

3. In the case of sole proprietorship, by the proprietor.

4. In the case of a municipal, state, or other public facility , by eit her a principal executive officer or ranking elected official.

B. All reports required by this permit and other information requested by Ecology shall be signed by a person described above or by a duly authorized representative of that person. A person is a duly authorized representative only if:

1. The authorization is made in writing by a person described above and submitted to
the Ecology

. 2. The authorization specifies either an individual or a position having responsibility for the overall operation of the reg ulated facility , such as the position of plant manager, superintendent, position of equivalent responsibility, or an individual or position having overall responsibility for environmental matters.

C. Changes to authorization. If an authorization under paragraph G2.B.2 above is no longer accurate because a different individual or position has responsibility for the overall operation of the facility , a new authorization satisfying the requirements of paragraph G2.B.2 above shall be submitted to Ecology prior to, or together with, any reports, information, or applications to be signed by an authorized representative.

D. Certification . Any person signing a document under this section shall make the following certification:

“I certify under penalty of law, that this do cument and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gathered and evaluated the information submitted. Based on my inquiry of the person or persons who m anage the system, or those persons directly responsible for gathering information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false info rmation, including the possibility of fine and imprisonment for knowing violations.”G3

Final Industrial Stormwater General Permit
– January 2, 2015 Page 46 G3. RIGHT OF INSPECTION AND ENTRY

The Permittee shall allow an authorized representative of Ecology , upon the presentation of credentials and such other documents as may be required by law:

A. To enter upon the premises where a discharge is located or where any records shall be kept under the terms and conditions of this permit.

B. To have access to and copy, at reasonable times and at reasonable cost, any records required to be kept under the terms and conditions of this permit.

C. To inspect, at reasonable times, any facilities, equipment (including sampling and control equipment), practices, methods, or operations regulated or required under this permit.

D. To sample or monitor, at reaso nable times, any substances or parameters at any location for purposes of assuring permit compliance or as otherwise authorized by the Clean
Water Act

.

G4. GENERAL PERMIT MODIFICATION AND REVOCATION

This permit may be modified, revoked and reissued, or termina ted in accordance with the provisions of Chapter 173-226 WAC. Grounds for modification, revocation and reissuance, or termination include, but are not limited to, the following:

A. When a change which occurs in the technology or practices for control or abatement of pollutant s applicable to the category of dischargers covered under this permit.

B. When effluent limitation guidelines or standards are promulgated pursuant to the CWA
or Ch apter 90.48 RCW, for the category of dischargers covered under this permit.

C. When a water quality management plan containing requirements applicable to the category of dischargers covered under this permit is approved.

D. When information is obtained which ind icates that cumulative effects on the
environment from dischargers covered under this permit are unacceptable.

G5. REVOCATION OF COVERAGE UNDER THE PERMIT

A. Pursuant with Chapter 43.21B RCW and Chapter 173-226 WAC, Ecology may terminate coverage for any dischar ger under this permit for cause. Cases where coverage may be terminated include, but are not limited to, the following:

1. Violation of any term or condition of this permit.

2. Obtaining coverage under this permit by misrepresentation or failure to disclose full y all relevant facts.

3. A change in any condition that requires either a temporary or permanent reduction or elimination of the permitted discharge.

4. Failure or refusal of the Permittee to allow entry as required in RCW 90.48.090.G 5.A.5

Final Industrial Stormwater General Permit
– January 2, 2015 Page 47 5. A determination that the per mitted activity endangers human health or the environment, or contributes to water quality standards violations.

6. Nonpayment of permit fees or penalties assessed pursuant to RCW 90.48.465 and Chapter 173-224 WAC.

7. Failure of the Permittee to satisfy the publ ic notice requirements of WAC 173-226- 130(5), when applicable.

B. Ecology may require any discharger under this permit to apply for and obtain coverage under an individual permit or another more specific general permit

. C. Permittees who have their coverage rev oked for cause according to WAC 173-226-240 may request temporary coverage under this permit during the time an individual permit is being developed, provided the request is made within 90 days from the time of revocation and is submitted along with a comp lete individual permit application form

.

G6. REPORTING A CAUSE FOR MODIFICATION

The Permittee shall submit a new application , or a supplement to the previous application

, whenever a material change to the industrial activity or in the quantity or type of discharge is anticipated which is not specifically authorized by this permit

. This application shall be submitted at least 60 days prior to any proposed changes. The filing of a request by the Permittee for a permit modification, revocation and reissuance, or termination, or a notification of planned changes or anticipated noncompliance does not relieve the Permittee of the duty to comply with the existing permit until it is modified or reissued.

G7. COMPLIANCE WITH OTHER LAWS AND STATUTES

Nothing in this permit shall be construed as excusing the Permittee from compliance with any applicable federal, state, or local statutes, ordinances, or regulations.

G8. DUTY TO REAPPLY

The Permittee shall apply for permit renewal at least 180 days prior to the expiration date of
thi s permit.

G9. REMOVED SUBSTANCES

Collected screenings, grit, solids, sludges, filter backwash, or other pollutant s removed in the
course of treatment or control of stormwater shall not be resuspended or reintroduced to the
final effluent stream for discharge to state waters.

G10. DUTY TO PROVIDE INFORMATION

The Permittee shall submit to Ecology , within a reasonable time, all information which Ecology may request to determine whether cause exists for modifying, revoking and reissuing, or terminating this permit or to determine compliance with this permit

. TheG1 0

Final Industrial Stormwater General Permit
– January 2, 2015 Page 48 Permittee shall also submit to Ecology , upon request, copies of records required to be kept by this permit [ 40 CFR 122.41(h)].

G11. OTHER REQUIREMENTS OF 40 CFR

All other requirements of 40 CFR 122.41 and 122.42 are incorporated in this permit by
reference.

G12. ADDITIONAL SAMPLING

Ecology may establish specific sampling requirements in addition to those contained in this permit by administrative order or permit modification.

G13. PENALTIES FOR VIOLATING PERMIT CONDITIONS

Any p erson who is found guilty of willfully violating the terms and conditions of this permit shall be deemed guilty of a crime, and upon conviction thereof shall be punished by a fine of up to $10,000 and costs of prosecution, or by imprisonment at the discretion of the court. Each day upon which a willful violation occurs may be deemed a separate and additional
violation.

Any person who violates the terms and conditions of this permit shall incur, in addition to any other penalty as provided by law, a civil p enalty in the amount of up to $10,000 for every such violation. Each and every such violation shall be a separate and distinct offense, and in case of a continuing violation, every day’s continuance shall be deemed to be a separate and
distinct violation.

G14. UPSET

Definition – “Upset” means an exceptional incident in which there is unintentional and temporary noncompliance with technology- based permit effluent limitations because of factors beyond the reasonable control of the Permittee. An upset does not include noncompliance to the extent caused by operational error, improperly designed treatment facilities, inadequate treatment facilities, lack of preventive maintenance, or careless or improper operation.

An upset constitutes an affirmative defense to an action brought for noncompliance with such technology- based permit effluent limitations if the requirements of the following paragraph

are met.

A Permittee who wishes to establish the affirmative defense of upset shall demonstrate, through properly signed, contemporaneous operating logs or other relevant evidence that: 1) an upset occurred and that the Permittee can identify the cause(s) of the upset; 2) the permitted facility was being properly operated at the time of the upset; 3) the Permittee
submitted notice of the upset as required in condition S9.E ; and 4) the Permittee complied with any remedial measures required under this permit.G1 4

Final Industrial Stormwater General Permit
– January 2, 2015 Page 49 In any enforcement proceeding, the Permittee seeking to establish the occurrence of an upset has the burden of proof.

G15. PROPERTY RIGHTS

This permit does not convey any property rights of any sort, or any exclusive privilege.

G16. DUTY TO COMPLY

The Permittee shall comply with all conditions of this permit . Any permit noncompliance
constitutes a violation of the Clean Water Act and is grounds for enforcement action; for permit termination, revocation and reissuance, or modification; or denial of a permit renewal application

.

G17. TOXIC POLLUTANTS

The Permittee shall comply with effluent standards or prohibitions established under Section 307(a) of the Clean Water Act for toxic pollutant s within the time provided in the regulations that establish those standards or prohibitions, even if this permit has not yet been modified to incorporate the requirement.

G18. PENALTIES FOR TAMPERING

The Cl ean Water Act provides that any person who falsifies, tampers with, or knowingly renders inaccurate any sampling device or method required to be maintained under this permit shall, upon conviction, be punished by a fine of not more than $10,000 per violation, or by imprisonment for not more than two years per violation, or by both. If a conviction of a person is for a violation committed after a first conviction of such person under this Condition, punishment shall be a fine of not more than $20,000 per day of violation, or imprisonment of not more than four years, or both.

G19. REPORTING PLANNED CHANGES

The Permittee shall, as soon as possible, give notice to Ecology of planned physical alterations, modifications or additions to the permitted industrial activity , which will result
in:

A. The permitted facility being determined to be a new source pursuant to 40 CFR 122.29(b).

B. A significant process change , as defined in the glossary of this permit.

C. A change in the location of industrial activity that affects the Permi ttee’s sampling requirements in Conditions S3, S4, S5, and S6.

Following such notice, permit coverage may be modified, or revoked and reissued pursuant

to 40 CFR 122.62(a) to specify and limit any pollutant s not previously limited . Until such modification is effective, any new or increased discharge in excess of permit limits or not specifically authorized by this permit constitutes a violation.G20

Final Industrial Stormwater General Permit
– January 2, 2015 Page 50 G20. REPORTING OTHER INFORMATION

Where the Permittee becomes aware that it failed to submit any relevant facts in a permit application , or submitted incorrect information in a permit application or in any report to Ecology , it shall promptly submit such facts or information.

G21. REPORTING ANTICIPATED NON

- COMPLIANCE

The Permittee shall give advance notice to Ecology by submission of a new application , or supplement to the existing application , at least 45 days prior to commencement of such discharges, of any facility expansions, production increases, or other planned changes, such as process modification s, in the permitted facility or activity which may result in noncompliance with permit limits or conditions

. Any maintenance of facilities, which might necessitate unavoidable interruption of operation and degradation of effluent quality, shall be scheduled during non-critical water quality periods and carried out in a manner approved by Ecology

.

G22. REQUESTS TO BE EXCLUDED FROM COVERAGE UNDER THE PERMIT

A. Any discharger authorized by this permit may request to be excluded from coverage
under the general permit by applying for an individual permit.

B. The dis charger shall submit to Ecology an application as described in WAC 173-220- 040 or WAC 173-216-070, whichever is applicable, with reasons supporting the request . These reasons shall fully document how an individu al permit will apply to the applicant in a way that the general permit cannot.

C. Ecology may make specific requests for information to support the request

. Ecology shall either issue an individual permit or deny the request with a statement explaining
the r eason for the denial.

D. When an individual permit is issued to a discharger otherwise subject to the industrial

stormwater general permit , the applicability of the industrial stormwater general permit to that Permittee is automatically terminated on the effective date of the individual permit.

G23. APPEALS

A. The terms and conditions of this general permit , as they apply to the appropriate class
of dischargers , are subject to appeal by any person within 30 days of issuance of this general permit , in accordance with Chapter 43.21B RCW, and Chapter 173-226 WAC.

B. The terms and conditions of this general permit , as they apply to an individual discharger , are appealable in accordance with Chapter 43.21B RCW within 30 days of the effective date of coverage of that discharger . Consideration of an appeal of general permit coverage of an individual discharger is limited to the general permit ’s applicability or nonapplicability to that individual discharger

.G23.C

Final Industrial Stormwater General Permit
– January 2, 2015 Page 51 C. The appeal of general permit coverage of an individual discharger does not affect any
other discharger s covered under this general permit . If the terms and conditions of this general permit are found to be inapplicable to any individual discharger (s), the matter
shall be remanded to Ecology for consideration of issuance of an individual permit or permits.

G24. SEVERABILITY

The provisions of this permit are severable, and if any provision of this permit, or application of any provision of this permit to any circumstance, is held invalid, the application of such provision to other circumstances, and the remainder of this permit shall not be affected thereby.

G25. BYPASS PROHIBITED

Bypass , which is the intentional diversion of waste s treams from any portion of a treatment facility , is prohibited, and Ecology may take enforcement action against a Permittee for bypass unless one of the following circumstances (A, B, or C ) is applicable.

A. Bypass for Essential Maintenance without the Potential to Cause Violation of
Permit Limits or Conditions

Bypass is authorized if it is for essential maintenance and does not have the potential to cause violations of limitations or other conditions of this permit, or adversely impact public health as determined by Ecology prior to the bypass

. The Permittee must submit prior notice, if possible, at least ten days before the date of the bypass

.
B. Bypass Which is Unavoidable, Unanticipated, and Results in Noncomplia nce of this
Permit

This bypass is permitted only if:

1. Bypass is unavoidable to prevent loss of life, personal injury, or severe property damage . “ Severe property damage ” means substantial physical damage to property, damage to the treatment facilities which would cause them to become inoperable, or substantial and permanent loss of natural resources which can reasonably be expected
to occur in the absence of a bypass

. 2. Th ere are no feasible alternatives to the bypass , such as the use of auxiliary treatment facilities, retention of untreated wastes, stopping production, maintenance during normal periods of equipment downtime (but not if adequate backup equipment should
have been installed in the exercise of reasonable engineering judgment to prevent a bypass which occurred during normal periods of equipment downtime or preventative maintenance), or transport of untreated wastes to another treatment facility

. 3. Ecology is properly notified of the bypass as required in condition S9E of this permit.G25 .C

Final Industrial Stormwater General Permit
– January 2, 2015 Page 52 C. Bypass which is Anticipated and has the Potential to Result in Noncompliance of
this Permit
The Permittee must notify Ecology at least thirty days before the planned date of bypass

. Th e notice must contain (1) a description of the bypass and its cause; (2) an analysis of all known alternatives which would eliminate, reduce, or mitigate the need for bypassing; (3) a cost

- effectiveness analysis of alternatives including comparative resource damage assessment; (4) the minimum and maximum duration of bypass under each alternative; (5) a recommendation as to the preferred alternative for conducting the bypass ; (6) the projected date of bypass initiation; (7) a statement of compliance with SEPA; (8) a request for modification of water quality standards as provided for in
WAC 173-201A- 410, if an exceedance of any water quality standard is anticipated; and (9) steps taken or planned to reduce, el iminate, and prevent reoccurrence of the bypass

. For probable construction bypasses, the need to bypass is to be identified as early in the planning process as possible. The analysis required above must be considered during preparation of the engineering report or facilities plan and plans and specifications and must be included to the extent practical. In cases where the probable need to bypass is determined early, continued analysis is necessary up to and including the construction period in an effort to minimize or eliminate the bypass

. Ecology will consider the following prior to issuing an administrative order for this type bypass :

1. If the bypass is necessary to perform construction or maintenance- related activities essential to meet the requirements of this permit.

2. If there are feasible alternatives to bypass , such as the use of auxiliary treatment facilities, retention of untreated wastes, stopping production, maintenance during normal periods of equipment down time, or transport of untreated wastes to another

treatment facility

. 3. If the bypass is planned and scheduled to minimize adverse effects on the public and
the environment.

After consideration of the above and the adverse effects of the propos ed bypass and any other relevant factors, Ecology will approve or deny the request. The public must be notified and given an opportunity to comment on bypass incidents of significant duration, to the extent
feasible . Approval of a request to bypass will be by administrative order issued by Ecology
under RCW 90.48.120.Final Industrial Stormwater General Permit
– January 2, 2015 Page 53 APPENDIX 1 - ACRONYMS

AKART All Known, A vailable and Reasonable methods of prevention, control and T reatment

BMP Best Management Practice

CAS Chemical Abstract Service
CERCLA Comprehensive Environmental Response Compensation & Liability Act
CFR Code of Federal Regulations
CWA Clean Water Act
CWT Centralized Waste Treatment

EPA Environmental Protection Agency
ESC Erosion and Sediment Control

FAA Federal Aviation Administration
FWPCA F ederal Water Pollution Control Act

NOT Notice of Termination
NPDES National Pollutant Discharge Elimination System

RCRA Resource Conservation and Recovery Act
RCW Revised Code of Washington

SARA Superfund Amendment and Reauthorization Act
SEPA State Environmental Policy Act
SIC Standard Industrial Classification
SMCRA Surface Mining Control and Reclamation Act
SWMM Stormwater Management Manual
SWPPP Stormwater Pollution Prevention Plan

TMDL Total Maximum Daily Load

USC United States Code
USEPA Uni ted States Environmental Protection Agency

WAC Washington Administrative Code WQ Water QualityFinal Industrial Stormwater General Permit
– January 2, 2015 Page 54 APPENDIX 2 - DEFINITIONS

40 CFR means Title 40 of the Code of Federal Regulations, which is the codification of the general and permanent rules published in t he Federal Register by the executive departments and agencies of the federal government.

303(d)-listed water body means waterbodies as listed as Category 5 on Washington State's Water Quality Assessment

.

Air Emission means a release of air contaminants into the ambient air.

Airfield Pavement means all paved surfaces on the airside of an airport.

Airside means the part of an airport directly involved in the arrival and departure of aircraft, including runways, taxiways, aprons, and ramps.

AKART is an acronym for “all known, available, and reasonable methods of prevention, control,
and treatment.” AKART represents the most current methodology that can be reasonably required for preventing, controlling, or abating the pollutant s and controlling pollution associated with a discharge.

Annual Non-propeller Aircraft Departures means the average number of com mercial turbine

engine aircraft that are propelled by jet, i.e., turbojet or turbofan, that take off from an airport on an annual basis, as tabulated by the Federal Aviation Administration (FAA).

Applicable TMDL means a TMDL which has been completed eithe r before the issuance date of this permit or the date the Permittee first obtains coverage under this permit, whichever is later.

Application means a request for coverage under this general permit pursuant to WAC 173-226-
200. Also called a Notice of Intent (NOI)

.

A verage means arithmetic mean, which is equal to the sum of the measurements divided by the
number of measurements.

Best Management Practices ( BMPs - general definition) means schedules of activities, prohibitions of practices, maintenance procedures, and other physical, structural and/or managerial practices to prevent or reduce the pollution of waters of the state . BMPs include treatment systems, operating procedures, and practices to control: facility site runoff , spillage or leaks, sludge or waste disposal, or drainage from raw material storage. In this permit BMPs are further categorized as operational source control, structural source control, erosion and sediment control, and treatment BMP s.

Benchmark means a pollutant concentration used as a permit threshold, below which a pollutant is considered unlikely to cause a water quality violation, and above which it may. When pollutant concentrations exceed benchmarks, corrective action requirements take effect

. Benchmark values are not water quality standards and are not numeric effluent limitations; they
are indicator values.Final Industrial Stormwater General Permit
– January 2, 2015 Page 55 Bypass means the intentional diversion of waste streams from any portion of a treatment facility

.

Clean Water Act (CWA) means the Federal Water Pollution Control Act enacted by Public Law 92-500, as amended by Public Laws 95-217, 95-576, 96-483, and 97-117; USC 1251 et seq.

Combined Sewer means a sewer which has been designed to serve as a sanitary sewer and a

storm sewer , and into which inflow is allowed by local ordinance.

Construction Activity means clearing, grading, excavation and any other activity which disturbs
the surface of the land . Such activities may include road building, construction of residential houses, office buildings, industrial buildings, and demolition activity.

Control Plan means a total maximum daily load (TMDL) determination, restrictions for the protection of state or federal threatened or endangered species, a ground water management pla n, or other limitations that regulate or set limits on discharges to a specific waterbody or ground water recharge area.

Daily Average means the average measurement of the pollutant throughout a period of 24 consecutive hours starting at 12:01 A.M. and ending at the following 12:00 P.M. (midnight).

Deicing means procedures and practices to remove or prevent any accumulation of snow or ice on: 1) an aircraft; or 2) airfield pavement.

Demonstrably Equivalent means that the technical basis for the selection of all storm water best management practices are documented within a storm water pollution prevention plan. The

storm water pollution prevention plan must document: 1) The method and reasons for choosing
th e storm water best management practices selected; 2 ) The pollutant removal performance expected from the practices selected; 3 ) The technical basis supporting the performance claims for the practices selected, including any available existing data concerni ng field performance of the practices selected; 4 ) An assessment of how the selected practices will comply with state water quality standards ; and 5 ) An assessment of how the selected practices will satisfy both applicable federal technology

- based treatment requirements and state requirements to use all known, available, and reasonable methods of prevention, control, and treatment.

Detention means the temporary storage of stormwater to improve quality and/or to reduce the mass flow rate of discharge

.

Dis charge [of a pollutant] means any addition of any pollutant or combination of pollutants to waters of the United States from any point source

. This definition includes additions of pollutants into waters of the United States from: surface runoff which is collected or channeled by man; discharges through pipes, sewers, or other conveyances owned by a State, municipality

, or other person which do not lead to a treatment works; and discharges through pipes, sewers, or other conveyances, leading into privat ely owned treatment works

.Final Industrial Stormwater General Permit
– January 2, 2015 Page 56 Discharge point means the location where a discharge leaves the Permittee’s facility. Discharge point also includes the location where a discharge enters the ground on- site (e.g., infiltration
BMP ).

Discharger means an owner or operator of any facility or activity subject to regulation under Chapter 90.48 RCW or the Federal Clean Water Act

.

Domestic Wastewater means water carrying human wastes, including kitchen, bath, and laundry wastes from residences, buildings, industrial establishments, or other places, together with such ground water infiltration or surface waters as may be present.

Ecology means the Washington State Department of Ecology

.

EPA means the United States Environmental Protection Agency.

Equivalent BMPs means operational, source control, treatment, or innovative BMPs which result in equal or better quality of stormwater discharge to surface water or to ground water than
BMPs selected from the SWMM

.

Erosion means the wearing away of the land surface by running water, wind, ice, or other geological agents, including such processes as gravitational creep

.

Erosion and Sediment Control BMPs means BMPs that are intended to prevent erosion and
sedimentation , such as preserving natural vegetation, seeding, mulching and matting, plastic covering, filter fences, and sediment traps and ponds.

Existing Facility means a facility that was in operation prior to the effective date of this permit. It also includes any facility that is not categorically included for coverage but is in operation when identified by Ecology as a significant contributor of pollutants

.

Facility means any source (including land or appurtenances thereto) that is subject to regulation
under this permit

. See Special Condition S1.

First fall storm event means the first time on or after October 1 st of each year that precipitation
occurs and results in a stormwater discharge from a facility . This storm event tends to wash off and discharge pollutants that accumulate during the preceding dry months.

General Permit means a permit which covers multiple dischargers of a point source category within a designated geographical area, in lieu of individual permits being issued to each discharger

.

Ground Water means water in a saturated zone or stratum beneath the land surface or a surface waterbody

.Final Industrial Stormwater General Permit
– January 2, 2015 Page 57 Illicit Discharge means any discharge that is not composed entirely of stormwater except (1) discharges authorized pursuant to a separate NPDES permi t, or (2) conditionally authorized nonstormwater discharges identified in Condition S5.D.

Inactive F acility means a facility that no longer engages in business, production, providing services, or any auxiliary operation.

Industrial Activity means (1) the 10 categories of industrial activities identified in 40 CFR 122.26(b)(14)(i- ix and xi), (2) any facility conducting any activities described in Table 1 , or (3) any facility identified by Ecology as a significant contributor of pollutants

.

Landfill means an area of land or an excavation in which wastes are placed for permanent disposal, and which is not a land application site , surface impoundment, injection well, or waste pile.

Land Application Site means an area wh ere wastes are applied onto or incorporated into the soil surface (excluding manure spreading operations) for treatment or disposal.

Leachate means water or other liquid that has percolated through raw material, product or waste and contains substances in solution or suspension as a result of the contact with these materials.

Local Government means any county, city, or town having its own government for local affairs.

Material Handling means storage, loading and unloading, transportation, or conveyance of any raw material, intermediate product, final product, by-product, or waste product.

Municipality means a political unit such as a city, town , or county; incorporated for local selfgovernment.

National Pollutant Discharge Elimination System (NPDES) means the national program for issuing, modifying, revoking, and reissuing, terminating, and enforcing permits, and imposing and enforcing pretreatment requirements, under sections 307, 402, 318, and 405 of the Federal
Clean Water Act , for the discharge o f pollutant s to surface waters of the state from point

sources

. These permits are referred to as NPDES permits and, in Washington State, are administered by the Washington Department of Ecology

.

New Development means land disturbing activities, including Class IV

- general forest practices that are conversions from timber land to other uses; structural development, including construction or installation of a building or other structure; creation of impervious surfaces; and subdivision, short subdivision and binding site plans, as defined and applied in Chapter 58.17 RCW. Projects meeting the definition of redevelopment shall not be considered new development.

New Discharg e(r ) means a facility from which there is a discharge, that did not commence the discharge at a particular site prior to August 13, 1979, which is not a new source, and which has never received a finally effective NPDES permit for discharges at that site

. See 40 CFR 122.2.Final Industrial Stormwater General Permit
– January 2, 2015 Page 58 New Facility means a facility that begins activities that result in a discharge or a potential discharge to waters of the state on or after the effective date of this general permit

.

Noncontact Cooling Water means water used for cooling which does not come into direct contact with any raw material, intermediate produ ct, waste product, or finished product.

Notice of Termination (NOT) means a request for termination of coverage under this general permit as specified by Special Condition S13 of this permit.

Operational Source Control BMPs means schedule of activities, prohibition of practices, maintenance procedures, employee training, good housekeeping, and other managerial practices to prevent or reduce the pollution of waters of the state . Not included are BMPs that require
construction of pollution control devices.

Outfall means the point where a discharge from a facility enters a receiving waterbody or receiving waters.

Pollutant means the discharge of any of the following to waters of the state : dredged spoil, solid waste, incinerator residue, filter backwash, sewage, garbage, domestic sewage sludge (biosolids), munitions, chemical wastes, biological materials, radioactive materials, heat, wrecked or discarded equipment, rock, sand, cellar dirt, and industrial, municipal, and agricultural waste. This term does not include sewage from vessels within the meaning of section 312 of the FWPCA nor does it include dredged or fill material discharged in accordance with a permit
issued under section 404 of the FWPCA.

Pollution means contamination or other alteration of t he physical, chemical, or biological properties of waters of the state ; including change in temperature, taste, color, turbidity , or odor of the waters; or such discharge of any liquid, gaseous, solid, radioactive or other substance into

any waters of the state as will or is likely to create a nuisance or render such waters harmful, detrimental or injurious to the public health, safety or welfare; or to domestic, commercial, industrial, agricultural, recreational, or other legitimate beneficial uses; or to livestock, wild animals, birds, fish, or other aquatic life.

Process Wastewater means any non- storm water which, during manufacturing or processing, comes into direct contact or results from the production or use of any raw material, intermediate product, finished product, byproduct, or waste product. If stormwater commingles with process wastewater, the commingled water is considered process wastewater

.

Puget Sound Sediment Cleanup Site means : Category 4B (Sediment) portions of Budd Inlet (Inner), Commencement Bay (Inner), Commencement Bay (Outer), Dalco Passage and East Passage, Duwamish Waterway (including East and West Waterway), Eagle Harbor, Elliot Bay, Hood Canal (North), Liberty Bay, Rosario Strait, Sinclair Inlet, and The a Foss Waterway; Category 5 (Sediment) portions of the Duwamish Waterway (including East and West Waterway), and Port Gardner and Inner Everett Harbor; and Port Angeles Harbor sediment cleanup area, as mapped on Ecology’s ISGP website. All references to Ca tegory 4B and 5 pertain to the 2012 EPA-a pproved Water Quality Assessment.Final Industrial Stormwater General Permit
– January 2, 2015 Page 59 Qualified Industrial Stormwater Professional means a licensed professional engineer, geologist, hydrogeologist; Certified Professional in Stormwater Quality, Certified Professional in Erosion and Sediment Control; or qualified environmental consultant with education and experience in stormwater management and licensed to do business in the State of Washington.

Qualified Personnel means those who possess the knowledge and skills to assess conditions and activities that could impact stormwater quality at the facility , and evaluate the effectiveness of best management practices required by this permit.

Quantitation Level (QL) also known as Minimum Level of Quantitation (ML) means the lowest level at which the entire analytical system must give a recognizable signal and acceptable calibration point for the analyte. It is equivalent to the concentration of the lowest calibration standard, assuming that all method

- specified sample weight s, volumes, and cleanup procedures have been employed.

Reasonable Potential means the likely probability for pollutant s in the discharge to exceed the applicable water quality criteria in the receiving waterbody

.

Redevelopment means o n a site that is already substantially developed (i.e., has 35% or more of existing impervious surface coverage), the creation or addition of impervious surfaces; the expansion of a building footprint or addition or replacement of a structure; structural development including construction, installation or expansion of a building or other structure; replacement of impervious surface that is not part of a routine maintenance activity; and land disturbing activities.

Regular Business Hours means those time frames when the fac ility is engaged in its primary production process, but does not include additional shifts or weekends when partial staffing is at the site primarily for maintenance and incidental production activities

. Regular business hours do not include periods of tim e that the facility is inactive and unstaffed

.

Representative [sample] means a sample of the discharge that accurately characterizes

stormwater runoff generated in the designated drainage area of the facility

.

Responsible Corporate Officer means: (i) a president, secretary, treasurer, or vice -president of the corporation in charge of a principal business function, or any other person who performs similar policy
- or decision -making functions for the corporation, or (ii) the manager of one or
more manufactu ring, production, or operating facilities, provided, the manager is authorized to make management decisions which govern the operation of the regulated facility including having the explicit or implicit duty of making major capital investment recommendatio ns, and initiating and directing other comprehensive measures to assure long term environmental compliance with environmental laws and regulations; the manager can ensure that the necessary systems are established or actions taken to gather complete and ac curate information for permit application requirements; and where authority to sign documents has been assigned or delegated to the manager in accordance with corporate procedures (40 CFR 122.22).Final Industrial Stormwater General Permit
– January 2, 2015 Page 60 Runoff means that portion of rainfall or snowmelt water not absorbed into the ground that
becomes surface flow.

Sanitary Sewer means a sewer which is designed to convey domestic wastewater

.

Sediment means the fragmented material that originates from the weathering and erosion of rocks, unconsolidated deposits, or unpaved yards, and is transported by, suspended in, or deposited by water.

Severe Property Damage means substantial physical damage to property, damage to the treatment facilities which would cause them to become inoperable, or substantial and permanent loss of natural resources which can reasonably be expected to occur in the absence of a bypass

. Severe property damage does not mean economic loss caused by delays in production.

Significant Amount means an amount of a pollutant in a discharge that is amenable to AKART ; or an amount of a pollutant that has a reasonable potential to cause a violation of surface or ground water quality standards or sediment management standards.

Significant Contributor of Pollutant(s) means a facility determined by Ecolo gy to be a
contributor of a significant amount (s) of a pollutant (s) to waters of the state

.

Significant Materials includes, but is not limited to: raw materials; fuels; materials such as solvents, detergents, and plastic pellets; finished materials such as metallic products; raw materials used in food processing or production; hazardous substances designated under section 101(14) of CERCLA; any chemical the facility is required to report pursuant to section 313 of title III of SARA; fertilizers; pesticides; and waste products such as ashes, slag , and sludge that have the potential to be released with stormwater discha rges.

Significant Process Change means any modification of the facility that would result in any of the following:

1. Add different pollutant s in a significant amount to the discharge.

2. Increase the pollutants in the stormwater discharge by a significant amount

. 3. Add a new industrial activity (SIC) that was not previously covered.

4. Add additional impervious surface or acreage such that stormwater discharge would be increased by 25% or more.

Source Control BMPs means structures or operations that are intended to prevent pollutants from coming into contact with stormwater through physical separation of areas or careful management of activities that are sources of pollutants. This permit separates source control into two types:

st ructural source control BMPs and operational source control BMPs

.

Standard Industrial Classification (SIC) is the statistical classification standard underlying all
establishment -based federal economic statistics classified by industry as reported in the 1987 SIC Manual by the Office of Management and Budget.Final Industrial Stormwater General Permit
– January 2, 2015 Page 61 State Environmental Policy Act (SEPA) means the Washington State Law, RCW 43.21C.020, intended to prevent or eliminate damage to the environment.

Storm Sewer means a sewer that is specifically desi gned to carry stormwater

. Also called a storm
drain.

Stormwater means that portion of precipitation that does not naturally percolate into the ground or evaporate, but flows via overland flow, interflow, pipes, and other features of a stormwater drainage system into a defined surface waterbody , or a constructed infiltration facility

.

Stormwater Discharge Associated with Industrial Activity means the discharge from any conveyance that is used for collecting and conveying stormwater and that is directly related to manufacturing, processing or raw materials storage areas at an industrial plant (see 40 CFR 122(b)(14)).

Stormwater Drainage System means constructed and natural features which function together as a system to collect, convey, channel, hold, inhibit, retain, detain, infiltrate or divert stormwater

.

Stormwater Management Manual (SWMM) or Manual means the technical manuals prepared by Ecology for stormwater management in western and eastern Washington.

Stormwater Pollution Prevention Plan (SWPPP) means a documented plan to implement measures to identify, prevent, and control the contamination of point source discharges of

stormwater

.

Structural Source Control BMPs means physical, structural, or mechanical devices or facilities that are intended to prevent pollutant s from entering stormwater

.

Substantially Identical Discharge Point means a discharge point that shares the following
characteristics with another discharge point : 1) the same general industrial activities conducted in the drainage area of the discharge point, 2) the same Best Management Practices conducted in the drainage area of the discharge point , 3) the same type of exposed materials located in the drainage area of the discharge point that are likely to be significant contributors of pollutant s to

stormwater discharges , and 4) the same type of impervious surfaces in the drainage area that

co uld affect the percolation of stormwater runoff into the ground (e.g., asphalt, crushed rock,

grass ).

Surface Waters of the State includes lakes, rivers, ponds, streams, inland waters, salt waters, and
all other surface waters and water courses within the jurisdiction of the state.

Total Maximum Daily Load (TMDL) means a calculation of the maximum amount of a pollutant that a waterbody can receive and still meet state water quality standards

. Percentages of the total maximum daily load are allocated to t he various pollutant sources

. A TMDL is the sum of the allowable loads of a single pollutant from all contributing point and nonpoint sources. The
TMDL calculations include a "margin of safety" to ensure that the waterbody can be protected inFinal Industrial Stormwater General Permit
– January 2, 2015 Page 62 case there ar e unforeseen events or unknown sources of the pollutant

. The calculation also accounts for seasonable variation in water quality

.

Treatment BMPs means BMPs that are intended to remove pollutant s from stormwater

.

Turbidity means the clarity of water expressed as nephelometric turbidity units (NTU) and
measured with a calibrated turbidimeter

.

Underground Injection Control Well means a well that is used to discharge fluids into the
subsurface. An underground injection contro l well is one of the following:
1. A bored, drilled, or driven shaft,

2. An improved sinkhole, or

3. A subsurface fluid distribution system. (WAC 173-218-030)

Unstaffed means the facility has no assigned staff

. A site may be “ unstaffed ” even when security personnel are present, provided that pollutant generating activities are not included in their
duties.

Vehicle means a motor -driven conveyance that transports people or freight, such as an automobile, truck, train, or airplane.

Vehicle Maintenance means the rehabilitation, mechanical repairing, painting, fueling, and/or lubricating of a motor -driven conveyance that transports people or freight, such as an automobile, truck, train, or airplane.

Wasteload Allocation (WLA) means the portion of a rece iving water’s loading capacity that is allocated to one of its existing or future point sources of pollution . WLAs constitute a type of water quality based effluent limitation ( 40 CFR 130.2(h)).

Water Quality Standards means the Water Quality Standards for Surface Waters of the State of Washington, Chapter 173-201A WAC, Ground Water Quality Standards (Chapter 173-200 WAC), Sediment Management Standards (Chapter 173-204 WAC), and human health- based
criteria in the Nation al Toxics Rule ( 40 CFR 131.36).

Waters of the State includes those waters defined as "waters of the United States" in 40 CFR Subpart 122.2 within the geographic boundaries of Washington State. State statute defines

" waters of the state " to include lakes, rivers, ponds, streams, wetlands, inland waters,
under ground water s, salt waters and all other surface waters and water courses within the jurisdiction of the state of Washington (Chapter 90.48 RCW).Final Industrial Stormwater General Permit
– January 2, 2015 Page 63 APPENDIX 3 - SWPPP CERTIFICATION FORM

The Permittee shall use this form to sign and certify that the Stormwater Pollution Prevention Plan (SWPPP) is complete, accurate and in compliance with Conditions S3 and S8 of the
Industrial Stormwater General Permit

.

• A SWPPP certification form needs to be completed and attached to all SWPPPs

.

• Each time a Level 1, 2, or 3 Corrective Action is required, this form needs to be re- signed
and re- certified by the Permittee, and attached to the SWPPP.

Is this SWPPP certification in response to a Level 1, 2 or 3 Corrective Action? Yes No

If Yes : Type of Corrective Action?: Level 1 Level 2 Level 3 

### *

Date SWPPP update/revision completed:

Briefly describe SWPPP Update (use backside, if necessary):

* Note: For Level 3 Corrective Actions, a Qualified Industrial Stormwater Professional must review the revised SWPPP, and sign and certify below, in accordance with Condition S8.D.2.:

“ The Permittee has made appropriate revisions to the SWPPP to include additional Treatment BMPs with the goal of achieving the applicable benchmark value(s) in future discharges. Based on my review of the SWPPP, discharges from the facility are reasonably expected to meet the ISGP benchmarks upon implementation .”

________________________ Qualified Industrial Stormwater Professional’s Printed Name Title

________________________ Qualified Industrial Stormwater Professional’s Signature Date

“I certify under penalty of law that this SWPPP and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate information to determine compliance with the Industrial Stormwater General Permit. Based on my inquiry of the person or persons who are responsible for stormwater management at my facility, this SWPPP is, to the best of my knowledge and belief, true, accurate, and complete, and in full compliance with Permit Conditions S3 and S8, including the correct Best Management Practices from the applicable Stormwater Management Manual. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations.”

________________________ Operator’s Printed Name * Title

________________________ Operator’s Signature * Date

* Federal regulations require this document to be signed in accordance with Condition G2.Final Industrial Stormwater General Permit
– January 2, 2015 Page 64 APPENDIX 4 - EXISTING DISCHARGERS TO IMPAIRED WATER S
This appendix has a link below to a website list of existing Permittees that discharge pollutant s of concern , either directly or indirectly through a stormwater drainage system, to an outfall that

enters 303(d)- listed (Category 5) impaired water s based on the 2012 EPA-approved water quality

assessme nt and to Puget Sound Sediment Cleanup Sites

.

http://www.ecy.wa.gov/programs/wq/stormwater/industrial/permitdocs/iswgpapp4.pdf

Appendix 4 is based upon information in Ecology's PARIS database. As such, it is subject to revision based upon new information including but not limited to: new facilities, discharge points

, and /or outfalls ; updates or corrections to ISGP facility locations, stormwater sample points, discharge points , and/ or outfalls

.

Appendix 4 is a technical assistance tool intended to support ISGP facilities with permit compliance . Appendix 4 may contain errors or omissions for various reasons, but this does not
relieve ISGP facilities of applic able permit requirements. If an inconsistency exists between Appendix 4 and ISGP Condition S6, the ISGP takes precedence. Permittees aware of errors or omissions with the information contained in Appendix 4 shall contact Ecology so that an update/correctio n can be made. If changes or updates are made, based on new or more accurate information, Ecology will notify the affected Permittee s directly

. Such changes or updates will not become effective until 30 days after the affected dischargers are notified

.

A PPENDIX 5 - DISCHARGERS SUBJECT TO TMDL REQUIREMENTS

The list of dischargers identified as discharging to water bodies which have completed water quality cleanup plans or TMDL s and associated monitoring requirements can be viewed on Ecology ’s website at: http://www.ecy.wa.gov/programs/wq/stormwater/industrial/permitdocs/iswgpapp5.pdf

The most current list can also be obtained by contacting Ecology at:

Industrial Stormwater General Permit Washington State Department of Ecology
PO Box 47696 Olympia, WA 98504-7696

This list is based on the best information available to Ecology

. There will be changes and updates to this list based on new, more accurat e information

. If changes or updates are made, Ecology will notify the affected Permittee s directly . Such changes or updates will not become effective until 30 days after the affected dischargers are notified.