Page 1 of 49 

 Permit No. WA-002958-1 

Issuance Date: September 30, 2009 

Effective Date: November 1, 2009 

Expiration Date: October 31, 2014 

NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM 

WASTE DISCHARGE PERMIT No. WA-002958-1 

State of Washington 

DEPARTMENT OF ECOLOGY 

Northwest Regional Office 

3190 160th Avenue SE 

Bellevue, WA 98008-5452 

In compliance with the provisions of 

The State of Washington Water Pollution Control Law 

Chapter 90.48 Revised Code of Washington 

and 

The Federal Water Pollution Control Act 

(The Clean Water Act) 

Title 33 United States Code, Section 1342 et seq. 

King County Wastewater Treatment Division 

King Street Center, KSC-NR-0512 

Seattle, Washington 98104-3855 

is authorized to discharge in accordance with the Special and General Conditions that follow. 

Plant Location: 

King County South Wastewater Treatment Plant 

1200 Monster Road SW 

Renton, WA 98057

Receiving Water: 

Puget Sound

Plant Type: 

Activated Sludge - (Secondary Treatment Plant)

Discharge Location: 

Puget Sound North Diffuser South Diffuser 

Latitude: 47° 36' 10" N 47° 35' 59" N 

Longitude: 122° 25' 44.4" W 122° 25' 44.5"W 

Emergency/Maintenance (Green River) 

Latitude: 47° 28' 03" N 

Longitude: 122° 14' 39" W

Kevin C. Fitzpatrick 

Water Quality Section Manager 

Northwest Regional Office 

Washington State Department of Ecology
Page 2 of 49 

Permit No. WA-002958-1 

TABLE OF CONTENTS 

SUMMARY OF PERMIT REPORT SUBMITTALS .....................................................................5

SPECIAL CONDITIONS

S1. DISCHARGE LIMITS ........................................................................................................7

A. Effluent Limits - Puget Sound (Marine) Outfall No. 001

B. Effluent Limits - Green River (Freshwater) Outfall No. 002

C. Mixing Zone Authorization

Mixing Zone Descriptions – Outfall No. 001

Mixing Zone Descriptions – Green River Outfall No. 002

S2. MONITORING REQUIREMENTS ..................................................................................10

A. Monitoring Schedule – South Wastewater Treatment Plant Outfall No. 001

B. Monitoring Schedule – Green River Outfall No. 002

C. Sampling and Analytical Procedures

D. Flow Measurement, Field Measurement, and Continuous Monitoring Devices 

E. Laboratory Accreditation 

S3. REPORTING AND RECORDING REQUIREMENTS ...................................................14

A. Reporting

B. Records Retention

C. Recording of Results

D. Additional Monitoring by the Permittee

E. Reporting Permit Violations

F. Other Reporting

G. Maintaining a Copy of This Permit

S4. FACILITY LOADING ......................................................................................................18

A. Design Criteria

B. Plans for Maintaining Adequate Capacity

C. Duty to Mitigate

D. Notification of New or Altered Sources

E. Infiltration and Inflow Progress Report

F. Wasteload Assessment

S5. OPERATION AND MAINTENANCE .............................................................................21

A. Certified Operator

B. Operation and Maintenance Program

C. Short-term Reduction

D. Electrical Power Failure

E. Prevent Connection of Inflow

F. Bypass Procedures

G. Operation and Maintenance Manual 
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Permit No. WA-002958-1 

S6. PRETREATMENT ............................................................................................................25

A. General Requirements

B. Monitoring Requirements

C. Reporting of Monitoring Results

D. Local Limit Development

E. Source Tracking Characterization

S7. RESIDUAL SOLIDS .........................................................................................................30

S8. APPLICATION FOR PERMIT RENEWAL ....................................................................30

S9. ENGINEERING DOCUMENTS.......................................................................................30

S10. SPILL CONTROL PLAN..................................................................................................31

S11. RECEIVING WATER CHARACTERIZATION .............................................................31

S12. SEDIMENT MONITORING .............................................................................................32

A. Sediment Sampling and Analysis Plan

B. Sediment Data Report

C. Source of Sediment Toxicity Study

S13. OUTFALL EVALUATION ..............................................................................................33

S14. ACUTE TOXICITY ..........................................................................................................33

A. Acute Toxicity Testing

B. Sampling and Reporting Requirements

S15. CHRONIC TOXICITY ......................................................................................................35

A. Chronic Toxicity Testing

B. Sampling and Reporting Requirements

S16. USE OF EFFLUENT RETURNED FOR DISCHARGE THROUGH THE EFFLUENT 

TRANSFER SYSTEM ......................................................................................................37

S17. NITROGEN REDUCTION STUDY .................................................................................37

GENERAL CONDITIONS

G1. SIGNATORY REQUIREMENTS.....................................................................................38

G2. RIGHT OF INSPECTION AND ENTRY .........................................................................39

G3. PERMIT ACTIONS...........................................................................................................40

G4. REPORTING PLANNED CHANGES..............................................................................41

G5. PLAN REVIEW REQUIRED ...........................................................................................41

G6. COMPLIANCE WITH OTHER LAWS AND STATUTES .............................................41

G7. TRANSFER OF THIS PERMIT .......................................................................................41

G8. REDUCED PRODUCTION FOR COMPLIANCE ..........................................................42

G9. REMOVED SUBSTANCES .............................................................................................42
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Permit No. WA-002958-1 

G10. DUTY TO PROVIDE INFORMATION ...........................................................................42

G11. OTHER REQUIREMENTS OF 40 CFR ...........................................................................43

G12. ADDITIONAL MONITORING ........................................................................................43

G13. PAYMENT OF FEES ........................................................................................................43

G14. PENALTIES FOR VIOLATING PERMIT CONDITIONS .............................................43

G15. UPSET ...............................................................................................................................43

G16. PROPERTY RIGHTS ........................................................................................................44

G17. DUTY TO COMPLY ........................................................................................................44

G18. TOXIC POLLUTANTS.....................................................................................................44

G19. PENALTIES FOR TAMPERING .....................................................................................44

G20. COMPLIANCE SCHEDULES .........................................................................................44

G21. CONTRACT REVIEW .....................................................................................................44 

APPENDIX A―EFFLUENT CHARACTERIZATION FOR POLLUTANTS.....................45 
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Permit No. WA-002958-1 

SUMMARY OF PERMIT REPORT SUBMITTALS 

Refer to the Special and General Conditions of this permit for additional submittal requirements. 

Permit 

Section 

Submittal Frequency First Submittal 

Date

S3 Discharge Monitoring Report Monthly November 20, 2009 

S3.E Reporting Permit Violations As necessary 

S3.F Other Reporting As necessary 

S4.B Plans for Maintaining Adequate Capacity As necessary 

S4.D Notification of New or Altered Sources As necessary 

S4.E Infiltration and Inflow Progress Report 2/permit cycle October 1, 2011 

S4.F Wasteload Assessment Annually October 1, 2010 

S5.G Operation and Maintenance Manual 

Update or Review Confirmation Letter 

Annually October 1, 2010 

S6.A.4 Pretreatment Report Annually March 31, 2010 

S6.E Source Tracking Characterization 1/permit cycle September 30, 2013 

S8 Application for Permit Renewal 1/permit cycle September 30, 2013 

S10 Spill Control Plan 1/permit cycle September 30, 2010 

S11 Receiving Water Characterization – 

Quality Assurance Plan 

1/permit cycle September 30, 2011 

S11 Receiving Water Characterization – Results 1/permit cycle September 30, 2013 

S12.A Sediment Sampling and Analysis Plan 1/permit cycle October 1, 2010 

S12.B Sediment Data Report 1/permit cycle October 1, 2012 

S12.C Source of Sediment Toxicity Study If required, 

1/permit cycle

S13 Outfall Evaluation 1/permit cycle September 30, 2012 

S13 Outfall Repair Plan If required, 

1/permit cycle

If required, 

September 30, 2013

S14.A Acute Toxicity Effluent Test Results With 

Permit Renewal Application 

2/permit cycle 

Testing to occur:

3rd Quarter 2012

1st Quarter 2013

September 30, 2013 

S14.B Acute Toxicity Summary Report 1/permit cycle September 30, 2013 

S15.A Chronic Toxicity Effluent Test Results 

With Permit Renewal Application 

2/permit cycle 

Testing to occur:

4th Quarter 2012

1st Quarter 2013

September 30, 2013 

S15.B Chronic Toxicity Summary Report 1/permit cycle September 30, 2013 

S17 Nitrogen Reduction Study If required, 

1/permit cycle

If required, 

June 30, 2013

G1.C Notice of Change in Authorization As necessary 

G4 Reporting Planned Changes As necessary 
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Permit No. WA-002958-1 

Permit 

Section 

Submittal Frequency First Submittal 

Date

G5 Engineering Report for Construction or 

Modification Activities 

As necessary 

G7 Notice of Permit Transfer As necessary 

G10 Duty to Provide Information As necessary 

G21 Contract Submittal As necessary 

 
Page 7 of 49 

Permit No. WA-002958-1 

SPECIAL CONDITIONS 

In this permit, the word “must” denotes an action that is mandatory and is equivalent to the word 

“shall” used in previous permits. 

S1. DISCHARGE LIMITS 

A. Effluent Limits - Puget Sound (Marine) Outfall No. 001

All discharges and activities authorized by this permit must comply with the terms and 

conditions of this permit. The discharge of any of the following pollutants more 

frequently than, or at a level in excess of, that identified and authorized by this permit 

violates the terms and conditions of this permit. 

Beginning on the effective date of this permit and lasting through the expiration date, 

the Permittee may discharge municipal wastewater at the permitted location subject to 

compliance with the following limits: 

EFFLUENT LIMITS a: OUTFALL No. 001

Parameter Average Monthly a Average Weekly b

Biochemical Oxygen 

Demand (5-day) 

30 mg/L, 36,000 lbs/day 

85% removal of influent BOD5

45 mg/L, 54,000 lbs/day 

Total Suspended Solids 30 mg/L, 36,000 lbs/day 

85% removal of influent TSS

45 mg/L, 54,000 lbs/day 

Fecal Coliform Bacteria c 200/100 mL 400/100 mL 

pH d Daily minimum is equal to or greater than 6.0 and 

the daily maximum is less than or equal to 9.0.

Parameter Average Monthly a Maximum Daily e

Total Residual Chlorine 0.5 mg/L 0.75 mg/L 

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. See footnote c

 for fecal coliform calculations. 

b Average weekly discharge limitation means the highest allowable average of “daily discharges” over a 

calendar week, calculated as the sum of all “daily discharges” measured during a calendar week 

divided by the number of “daily discharges” measured during that week. See footnote c

 for fecal 

coliform calculations.

c To calculate the average monthly and average weekly values for fecal coliforms, you must use the 

geometric mean. Ecology gives directions to calculate this value in publication No. 04-10-020, 

Information Manual for Treatment Plant Operators available at: 

http://www.ecy.wa.gov/pubs/0410020.pdf 

d Indicates the range of permitted values. The Permittee must report the instantaneous maximum and 

minimum pH monthly. Do not average pH values.

e 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.
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Permit No. WA-002958-1 

B. Effluent Limits - Green River (Freshwater) Outfall No. 002

Beginning on the effective date of this permit and lasting through the expiration date, 

the Permittee is authorized to discharge treated municipal wastewater at the Green River 

outfall for maintenance purposes only under the following conditions: 

1. The Permittee must obtain approval from the Department of Ecology at least five 

(5) working days in advance of the discharging to the Green River for maintenance 

purposes. 

2. The duration of the discharge must not exceed four (4) hours. 

3. The discharge must comply with the limits specified below. 

EFFLUENT LIMITS: OUTFALL No. 002 (Green River) 

Parameter Daily Maximum

Biochemical Oxygen Demand (5-day) 20 mg/L 

Total Suspended Solids 20 mg/L 

Fecal Coliform Bacteria 200/100 mL 

pH Shall not be outside the range 6.0 to 9.0 

Total Residual Chlorine 171 μg/L 

4. The average effluent discharge flow to the Green River must not exceed 28 cfs 

(cubic feet per second, equivalent to 18 MGD). 

5. The Permittee may only discharge when the Green River flow is greater than 1000 

cfs to ensure adequate dilution of the effluent. 

6. The Permittee must treat any maintenance discharges to the Green River using 

secondary treatment, disinfection, and dechlorination. 

7. The Permittee must monitor the discharge as required in S2.B to ensure that 

effluent limits are met. 

8. The Permittee must collect a composite of equal volume grab samples at least once 

every hour prior to the point of discharge. 

9. The Permittee must sample river water quality at least 300 feet downstream of the 

diffuser at the time of the discharge for ammonia, TSS, and heavy metals as 

detailed in S2.B(2). 

10. Any discharge from the treatment plant that results in water quality violations or 

contributes significantly to a fish kill is a violation of this permit. 

11. The Permittee may only discharge, as a result of maintenance activities, during the 

out-going tide (after a high tide and before the subsequent low tide). 
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Permit No. WA-002958-1 

C. Mixing Zone Authorization

The following paragraphs define the maximum boundaries of the mixing zones: 

Mixing Zone Descriptions – Outfall No. 001 

Chronic Mixing Zone 

WAC 173-201A-400(7)(b)(i) specifies mixing zones must not extend in any horizontal 

direction from the discharge ports for a distance greater than 200 feet plus the depth of 

water over the discharge ports as measured during mean lower low water (MLLW). 

Given a MLLW water depth of 625 feet (190.5 meters) for the Permittee's outfall, the 

horizontal distance therefore is 825 feet (251.5 meters). The mixing zone is a circle 

with radius of 825 feet (251.5 meters) measured from the center of each discharge port. 

The mixing zone extends from the seabed to the top of the water surface. Chronic 

aquatic life criteria and human health criteria must be met at the edge of the chronic 

zone. 

Acute Mixing Zone 

WAC 173-201A-400(8)(b) specifies that in estuarine waters a zone where acute criteria 

may be exceeded must not extend beyond 10% of the distance established for the 

maximum or chronic zone as measured independently from the discharge ports. The 

acute mixing zone is a circle with a radius of 82.5 feet (25.2 meters) measured from the 

center of each discharge port. The mixing zone extends from the seabed to the top of 

the water surface. Acute aquatic life criteria must be met at the edge of the acute zone. 

Available Dilution (Dilution Ratio) 

Acute Aquatic Life Criteria 186:1 

Chronic Aquatic Life Criteria 225:1 

Human Health Criteria - Carcinogen 428:1 

Human Health Criteria - Non-carcinogen 428:1 

 

Mixing Zone Descriptions – Green River Outfall No. 002 

WAC 173-201A-400(7)(a) and (8) define the requirements for mixing zones in rivers 

and streams. 

The mixing zone cannot extend more than 310 feet downstream and more than 100 feet 

upstream from the diffuser. The acute mixing zone extends 31 feet downstream and 10 

feet upstream of the diffuser. 
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Permit No. WA-002958-1 

Green River Outfall:

Type of Mixing Zone & Type of Ratio Mixing Zones Size & Dilution Ratios 

Chronic Mixing Zone 310 feet downstream 

100 feet upstream of the diffuser 

Zone of Acute Criteria Exceedance 31 feet downstream 

10 feet upstream of the diffuser 

Chronic Dilution Ratio a Not Applicable 

Acute Dilution Ratio 9:1 

a Maintenance discharges are permitted for short durations only (i.e. less than 4 hours) and 

therefore a chronic dilution ratio is not applicable. 

S2. MONITORING REQUIREMENTS 

A. Monitoring Schedule – South Wastewater Treatment Plant (South WWTP) Outfall No. 001

The Permittee must monitor in accordance with the following schedule and must use 

the laboratory method, detection level (DL), and quantitation level (QL) specified in 

Appendix A or corresponding Sampling Analysis Plan/Quality Assurance Project Plan 

(SAP/QAPP) documents. Alternative methods from 40 CFR Part 136 are acceptable if 

the DL and QL are equivalent to those specified in Appendix A, corresponding 

SAP/QAPP documents, or sufficient to produce a measurable quantity. 

 

Parameter a Units Minimum Sampling 

Frequency

Sample Type 

(1) Wastewater Influent

Wastewater Influent means the raw sewage flow. Sample the wastewater entering the influent 

distribution channel of the treatment plant. 

BOD5 mg/L 4 times per week b 24-hour composite c

BOD5 lbs/day 4 times per week b Calculation e

TSS mg/L 4 times per week b 24-hour composite c

TSS lbs/day 4 times per week b Calculation e

(2) Final Wastewater Effluent

Final Wastewater Effluent means wastewater which is exiting, or has exited, the last treatment process or 

operation. Typically, this is after or at the exit from the chlorine contact chamber or other disinfection 

process. The Permittee may take effluent samples for the BOD5 analysis before or after the disinfection 

process. If taken after, dechlorinate and reseed the sample. 

Flow MGD Continuous d Measurement 

BOD5 mg/L 4 times per week b 24-hour composite c

BOD5 lbs/day 4 times per week b Calculation e

BOD5 % removal Monthly f Calculation g

TSS mg/L 4 times per week b 24-hour composite c

TSS lbs/day 4 times per week b Calculation e

TSS % removal Monthly f Calculation g

Chlorine mg/L Continuous d Measurement 
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Permit No. WA-002958-1 

Parameter a Units Minimum Sampling 

Frequency

Sample Type 

Chlorine mg/L Weekly 

(meter confirmation) 

Grab h

Fecal Coliform Organisms /100 ml Daily Grab h

pH Standard Units Continuous d Measurement 

Temperature i °C Daily Continuous d or 

Grab h

(3) Effluent Characterization – Final Wastewater Effluent

Total Ammonia mg/L N Monthly f 24-hour composite c

Total Ammonia lbs/day N Monthly f Calculation e

Total Phosphorus mg/L P Monthly f 24-hour composite c

Ortho-Phosphate (PO4) mg/L P Monthly f 24-hour composite c

Nitrate-Nitrite Nitrogen mg/L N Monthly f 24-hour composite c

Total Kjeldahl Nitrogen mg/L N Monthly f 24-hour composite c

(4) Whole Effluent Toxicity Testing – Final Wastewater Effluent 

Acute Toxicity Testing 2/permit cycle 24-hour composite c

Chronic Toxicity Testing 2/permit cycle 24-hour composite c

Additional requirements specified in Permit Conditions S13 and S14. 

(5) Pretreatment 

As specified in Permit Condition S6. 

(6) Permit Application Requirements – Final Wastewater Effluent

Temperature Degrees Celsius As required above As required above 

BOD mg/L As required above As required above 

Fecal Coliform Organisms/100ml As required above As required above 

Dissolved Oxygen mg/L Twice per year Grab h

Oil and Grease (HEM) mg/L Twice per year Grab h

Total Dissolved Solids mg/L Twice per year 24-hour composite c

Total Hardness mg/L Twice per year 24-hour composite c

Cyanide μg/L Twice per year Grab h

Total Phenols μg/L Twice per year Grab h

Metals – Appendix A as listed under 

“Metals, Cyanide, & Total Phenols” 

μg/L Twice per year 24-hour composite c

or Grab h

Volatile Compounds – Appendix A μg/L Twice per year Grab h

Acid-Compounds – Appendix A μg/L Twice per year 24-hour composite c

Base/Neutral Compounds – Appendix A μg/L Twice per year 24-hour composite c

The Permittee must record and report the wastewater treatment plant flow discharged on the day it 

collects the sample for priority pollutant testing with the discharge monitoring report. 

(7) Receiving Water Characterization

As specified in Permit Condition S11. 

(8) Sediment Study

As specified in Permit Condition S12. 
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Permit No. WA-002958-1 

Footnotes 

a See Appendix A for the required detection (DL) or quantitation (QL) levels. 

Report single analytical values below detection as “less than (detection level)” where (detection 

level) is the numeric value specified in attachment A. 

Report single analytical values between the agency-required detection and quantitation levels with 

qualifier code of j following the value. 

To calculate the average value (monthly average): 

• Use the reported numeric value for all parameters measured between the agency-required 

detection value and the agency-required quantitation value. 

• For values reported below detection, use one-half the detection value if the lab detected the 

parameter in another sample for the reporting period. 

For values reported below detection, use zero if the lab did not detect the parameter in another 

sample for the reporting period. If the Permittee is unable to obtain the required DL and QL in its 

effluent due to matrix effects, the Permittee must submit a matrix specific MDL and a QL to 

Ecology with appropriate laboratory documentation.

b “4 times per week” means four (4) times during each calendar week. c “24-hour composite” means a series of individual samples collected over a 24-hour period into a 

single container, and analyzed as one sample. 

d “Continuous” means uninterrupted except for brief lengths of time for calibration, for power failure, 

or for unanticipated equipment repair or maintenance. The Permittee must sample every hour 

when continuous monitoring is not possible, except for chlorine which must be sampled once 

every four hours. e “Calculation” means figured concurrently with the respective sample, using the following formula: 

Concentration (in mg/L) X Flow (in MGD) X Conversion Factor (8.34) = lbs/day 

f “Monthly” means once every calendar month. 

g Calculate the Percent (%) removal of BOD and TSS using the following algorithm (concentrations 

in mg/L): (Average Monthly Influent Concentration - Average Monthly Effluent 

Concentration)/Average Monthly Influent Concentration. 

h “Grab” means an individual sample collected over a fifteen (15)-minute, or less, period. 

i

Temperature grab sampling must occur when the effluent is at or near its daily maximum 

temperature, which is usually in the late afternoon. If temperature is measured continuously, the 

Permittee must determine and report a daily maximum from half-hour measurements in a 24-hour 

period. To determine the daily average, use the temperature on the half-hour from the chart for 

the twenty-four (24)-hour period and calculate the average of the values. Continuous monitoring 

instruments must achieve an accuracy of 0.2 degrees C, and the Permittee must verify accuracy 

annually.

B. Monitoring Schedule – Green River Outfall No. 002

The Permittee must monitor in accordance with the following schedule and must use 

the laboratory method, detection level (DL), and quantitation level (QL) specified in 

Appendix A or corresponding Sampling Analysis Plan/Quality Assurance Project Plan 

(SAP/QAPP) documents. Alternative methods from 40 CFR Part 136 are acceptable if 

the DL and QL are equivalent to those specified in Appendix A, corresponding 

SAP/QAPP documents, or sufficient to produce a measurable quantity. 
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Permit No. WA-002958-1 

Parameter a Units Minimum Sampling 

Frequency

Sample Type 

(1) Wastewater Final Effluent

Final Wastewater Effluent means wastewater which is exiting, or has exited, the last treatment process or 

operation. Typically, this is after or at the exit from the chlorine contact chamber or other disinfection 

process. 

Volume MG Once per event Measurement/Calculation 

Duration Hours Once per event Measurement 

BOD5 mg/L Once per event Composite of equal volume 

grab samples during event 

TSS mg/L Once per event Composite of equal volume 

grab samples during event 

pH s.u. Once per event Grab b

Fecal Coliform Bacteria Organisms/100 ml Once per event Grab b

Total Residual Chlorine mg/L Once per event Grab b

Ammonia mg/L Once per event Grab b

(2) Downstream of Discharge - 300 feet

River Flow cfs Once per event Measurement 

Tidal Stage feet Once per event Tidal Chart 

TSS mg/L Once per event Grab b

Ammonia mg/L Once per event Grab b

Metals – Appendix A as listed 

under “Metals, Cyanide, & Total 

Phenols” 

mg/L Once per event Grab b

Footnotes 

a See Appendix A for the required detection (DL) or quantitation (QL) levels. 

Report single analytical values below detection as “less than (detection level)” where (detection 

level) is the numeric value specified in attachment A. 

Report single analytical values between the agency-required detection and quantitation levels with 

qualifier code of j following the value. 

To calculate the average value (monthly average): 

• Use the reported numeric value for all parameters measured between the agency-required 

detection value and the agency-required quantitation value. 

• For values reported below detection, use one-half the detection value if the lab detected the 

parameter in another sample for the reporting period. 

For values reported below detection, use zero if the lab did not detect the parameter in another 

sample for the reporting period. If the Permittee is unable to obtain the required DL and QL in its 

effluent due to matrix effects, the Permittee must submit a matrix specific MDL and a QL to 

Ecology with appropriate laboratory documentation.

b “Grab” means an individual sample collected over a fifteen (15)-minute, or less, period. 
Page 14 of 49 

Permit No. WA-002958-1 

C. Sampling and Analytical Procedures

Samples and measurements taken to meet the requirements of this permit must represent 

the volume and nature of the monitored parameters. The Permittee must conduct 

representative sampling of any unusual discharge or discharge condition, including 

bypasses, upsets, and maintenance-related conditions that may affect effluent quality. 

Sampling and analytical methods used to meet the monitoring requirements specified in 

this permit must conform to the latest revision of the Guidelines Establishing Test 

Procedures for the Analysis of Pollutants contained in 40 CFR Part 136. 

D. Flow Measurement, Field Measurement, and Continuous Monitoring Devices

The Permittee must: 

1. Select and use appropriate flow measurement, field measurement, and continuous 

monitoring devices and methods consistent with accepted scientific practices. 

2. Install, calibrate, and maintain these devices to ensure the accuracy of the 

measurements is consistent with the accepted industry standard and the 

manufacturer’s recommendation for that type of device. 

3. Use field measurement devices as directed by the manufacturer and do not use 

reagents beyond their expiration dates. 

4. Maintain calibration records for at least three years. 

E. Laboratory Accreditation

The Permittee must ensure that all monitoring data required by Ecology is prepared by a 

laboratory registered or accredited under the provisions of Chapter 173-50 WAC,

Accreditation of Environmental Laboratories. Flow, temperature, settleable solids, 

conductivity, pH, and internal process control parameters are exempt from this requirement. 

S3. REPORTING AND RECORDING REQUIREMENTS 

The Permittee must monitor and report in accordance with the following conditions. 

Falsification of information submitted to Ecology is a violation of the terms and conditions 

of this permit. 

A. Reporting

The first monitoring period begins on the effective date of the permit. The Permittee must: 

1. Submit monitoring results each month. 
Page 15 of 49 

Permit No. WA-002958-1 

2. Summarize, report, and submit monitoring data obtained during each monitoring 

period on a discharge monitoring report (DMR) form provided, or otherwise 

approved, by Ecology. 

 

3. Submit DMR forms monthly whether or not the facility was discharging. If the facility 

did not discharge during a given monitoring period, submit the form as required with 

the words "NO DISCHARGE" entered in place of the monitoring results. 

4. Ensure that DMR forms are postmarked or received by Ecology no later than the 

20th day of the month following the completed monitoring period, unless otherwise 

specified in this permit. 

5. Submit priority pollutant analysis data no later than sixty (60) days following the 

monitoring. 

6. Send report(s) to Ecology at: 

Water Quality Permit Coordinator 

Department of Ecology 

Northwest Regional Office 

3190 160th Avenue SE 

Bellevue, WA 98008-5452 

All laboratory reports providing data for organic and metal parameters must include the 

following information: sampling date, sample location, date of analysis, parameter name, 

analytical method/number, method detection limit (MDL), laboratory practical quantitation 

limit (PQL), reporting units, and concentration detected. Analytical results from samples 

sent to a contract laboratory must include information on the chain of custody, the 

analytical method, QA/QC results, and documentation of accreditation for the parameter. 

B. Records Retention

The Permittee must retain records of all monitoring information for a minimum of three (3) 

years. Such information must include all calibration and maintenance records and all original 

recordings for continuous monitoring instrumentation, copies of all reports required by this 

permit, and records of all data used to complete the application for this permit. The 

Permittee must extend this period of retention during the course of any unresolved litigation 

regarding the discharge of pollutants by the Permittee or when requested by Ecology. 

C. Recording of Results

For each measurement or sample taken, the Permittee must record the following information: 

1. The date, exact place, method, and time of sampling or measurement. 

2. The individual who performed the sampling or measurement. 

3. The dates the analyses were performed. 
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Permit No. WA-002958-1 

4. The individual who performed the analyses. 

5. The analytical techniques or methods used. 

6. The results of all analyses. 

D. Additional Monitoring by the Permittee

If the Permittee monitors any pollutant more frequently than required by Condition S2 

of this permit, then the Permittee must include the results of such monitoring in the 

calculation and reporting of the data submitted in the Permittee's DMR. 

E. Reporting Permit Violations

The Permittee must take the following actions when it violates or is unable to comply 

with any permit condition: 

• Immediately take action to stop, contain, and cleanup unauthorized discharges or 

otherwise stop the noncompliance and correct the problem. 

• If applicable, immediately repeat sampling and analysis. Submit the results of any 

repeat sampling to Ecology within thirty (30) days of sampling. 

1. Immediate Reporting

The Permittee must report any failure of the disinfection system immediately to the 

Department of Ecology's Regional Office 24-hour number listed below: 

Northwest Regional Office 425-649-7000 

The Permittee must report any failure of the disinfection system, any collection 

system overflows, or any plant bypass discharging to a shellfish area immediately to 

the Department of Ecology and the Department of Health, Shellfish Program at the 

numbers listed below: 

Northwest Regional Office 425-649-7000 

Department of Health, 

Shellfish Program 

360-236-3330 (business hours) 

360-786-4183 (24 hours) 

The Permittee must report any collection system overflows discharging to a waterbody 

used as a source of drinking water immediately to the Department of Ecology and the 

Department of Health, Drinking Water Program at the numbers listed below: 

Northwest Regional Office 425-649-7000 

Department of Health, 

Drinking Water Program 

360-521-0323 (business hours) 

360-481-4901 (after business hours) 
Page 17 of 49 

Permit No. WA-002958-1 

2. Twenty-four hour Reporting

The Permittee must report the following occurrences of noncompliance by 

telephone, to Ecology at the telephone numbers listed above, within 24 hours from 

the time the Permittee becomes aware of any of the following circumstances: 

a. Any noncompliance that may endanger health or the environment, unless 

previously reported under subpart 1, above. 

b. Any unanticipated bypass that exceeds any effluent limitation in the permit 

(See Part S4.B, “Bypass Procedures”). 

c. Any upset that exceeds any effluent limitation in the permit (See G.15, “Upset”). 

d. Any violation of a maximum daily or instantaneous maximum discharge limit 

for any of the pollutants in Section S1.A or S1.B of this permit. 

e. Any overflow prior to the treatment works, whether or not such overflow 

endangers health or the environment or exceeds any effluent limit in the permit. 

3. Report Within Five Days

The Permittee must also provide a written submission within five days of the time 

that the Permittee becomes aware of any event required to be reported under 

subparts 1 or 2, above. The written submission must contain: 

a. A description of the noncompliance and its cause. 

b. The period of noncompliance, including exact dates and times. 

c. The estimated time noncompliance is expected to continue if it has not been 

corrected. 

d. Steps taken or planned to reduce, eliminate, and prevent recurrence of the 

noncompliance. 

e. If the noncompliance involves an overflow prior to the treatment works, an 

estimate of the quantity (in gallons) of untreated overflow. 

4. Waiver of Written Reports

Ecology may waive the written report required in subpart 3, above, on a 

case-by-case basis upon request if a timely oral report has been received. 
Page 18 of 49 

Permit No. WA-002958-1 

5. All Other Permit Violation Reporting

The Permittee must report all permit violations, which do not require immediate or 

within 24 hours reporting, when it submits monitoring reports for S3.A 

("Reporting"). The reports must contain the information listed in paragraph E.3, 

above. Compliance with these requirements does not relieve the Permittee from 

responsibility to maintain continuous compliance with the terms and conditions of 

this permit or the resulting liability for failure to comply. 

6. Report Submittal

The Permittee must submit reports to the address listed in S3. 

F. Other Reporting

The Permittee must report a spill of oil or hazardous materials in accordance with the 

requirements of RCW 90.56.280 and Chapter 173-303-145. You can obtain further 

instructions at the following website: 

http://www.ecy.wa.gov/programs/spills/other/reportaspill.htm . 

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 must submit such facts or information promptly. 

The Permittee must submit a new application or supplement at least one hundred eighty 

(180) days prior to commencement of discharges, resulting from the activities listed 

below, which may result in permit violations. These activities include any facility 

expansions, production increases, or other planned changes, such as process 

modifications, in the permitted facility. 

G. Maintaining a Copy of This Permit

The Permittee must keep a copy of this permit at the facility and make it available upon 

request to Ecology inspectors. 

S4. FACILITY LOADING 

A. Design Criteria

The flows or waste loads for the permitted facility must not exceed the following 

design criteria: 

Maximum Month Design Flow (MMDF) 144 MGD 

Peak Instantaneous Design Flow (PIDF) 325 MGD 

BOD5 Influent Loading for Maximum Month 251,000 lbs/day 

TSS Influent Loading for Maximum Month 235,000 lbs/day 
Page 19 of 49 

Permit No. WA-002958-1 

B. Plans for Maintaining Adequate Capacity

The Permittee must submit a plan and a schedule for continuing to maintain capacity to 

Ecology when: 

1. The actual flow or waste load reaches 85 percent of any one of the design criteria 

in S4.A for three consecutive months. 

2. The projected increase would reach design capacity within five years. 

The plan and schedule for continuing to maintain capacity must be sufficient to 

achieve the effluent limits and other conditions of this permit. This plan must 

identify any of the following actions or any other actions necessary to meet the 

objective of maintaining capacity. 

a. Analysis of the present design, including the introduction of any process 

modifications that would establish the ability of the existing facility to achieve 

the effluent limits and other requirements of this permit at specific levels in 

excess of the existing design criteria specified in paragraph A, above. 

b. Reduction or elimination of excessive infiltration and inflow of 

uncontaminated ground and surface water into the sewer system. 

c. Limitation on future sewer extensions or connections or additional waste 

loads. 

d. Modification or expansion of facilities necessary to accommodate increased 

flow or waste load. 

e. Reduction of industrial or commercial flows or waste loads to allow for 

increasing sanitary flow or waste load. 

Engineering documents associated with the plan must meet the requirements of 

WAC 173-240-060, "Engineering Report," and be approved by Ecology prior to 

any construction. 

If the Permittee intends to apply for state or federal funding for the design or 

construction of a facility project, the plan may also need to meet the environmental 

review requirements as described in 40 CFR 35.3040 and 40 CFR 35.3045 and it 

may also need to demonstrate cost effectiveness as required by WAC 173-95-730. 

The plan must specify any contracts, ordinances, methods for financing, or other 

arrangements necessary to achieve this objective. 

C. Duty to Mitigate

The Permittee must take all reasonable steps to minimize or prevent any wastewater or 

sludge from being discharged, used, or disposed in a manner which violates this permit 

or has a reasonable likelihood of adversely affecting human health or the environment. 
Page 20 of 49 

Permit No. WA-002958-1 

D. Notification of New or Altered Sources

1. The Permittee must submit written notice to Ecology whenever any new discharge or 

a substantial change in volume or character of an existing discharge into the POTW is 

proposed which: 

a. Would interfere with the operation of, or exceed the design capacity of, any 

portion of the POTW; 

b. Is not part of an approved general sewer plan or approved plans and specifications; 

or 

c. Would be subject to pretreatment standards under 40 CFR Part 403 and 

Section 307(b) of the Clean Water Act. 

2. This notice must include an evaluation of the POTW's ability to adequately transport 

and treat the added flow and/or waste load, the quality and volume of effluent to be 

discharged to the POTW, and the anticipated impact on the Permittee’s effluent 

[40 CFR 122.42(b)]. 

E. Infiltration and Inflow Progress Report

1. The Permittee shall submit a biennial Infiltration and Inflow (I/I) Progress Report. 

The report must be submitted according to the dates as shown on the Summary of 

Permit Report Submittals. 

2. A report shall be prepared which summarizes progress made toward measuring the 

infiltration and inflow and the progress that has been made toward removing 

infiltration and inflow from the system since the previous I/I Progress Report. 

3. The first report shall be submitted by October 1, 2011, and every two (2) years thereafter. 

F. Wasteload Assessment

1. The Permittee must conduct an annual assessment of their influent flow and waste 

load and submit a report to Ecology by October 1, 2010, and annually thereafter. 

2. The report must contain the following: an indication of compliance or noncompliance 

with the permit effluent limits; a comparison between the existing and design monthly 

average dry weather and wet weather flows, peak flows, BOD, and total suspended 

solids loadings; and (except for the first report) the percentage change in these 

parameters since the previous report. 

3. The report must also state the present and design population or population equivalent, 

projected population growth rate, and the estimated date upon which the design capacity 

is projected to be reached, according to the most restrictive of the parameters above. 

4. Ecology may modify the interval for review and reporting if it determines that a 

different frequency is sufficient. 
Page 21 of 49 

Permit No. WA-002958-1 

S5. OPERATION AND MAINTENANCE 

The Permittee must at all times properly operate and maintain all facilities and systems of 

treatment and control (and related appurtenances) that are installed to achieve compliance with 

the terms and conditions of this permit. Proper operation and maintenance also includes 

keeping a daily operation logbook (paper or electronic), adequate laboratory controls, and 

appropriate quality assurance procedures. This provision of the permit requires the Permittee to 

operate backup or auxiliary facilities or similar systems only when the operation is necessary to 

achieve compliance with the conditions of this permit. 

A. Certified Operator

This permitted facility must be operated by an operator certified by the state of Washington 

for at least a Class IV plant. This operator must be in responsible charge of the day-to-day 

operation of the wastewater treatment plant. An operator certified for at least a Class III 

plant must be in charge during all regularly-scheduled shifts. 

B. Operation and Maintenance Program

The Permittee must: 

1. Institute an adequate Operation and Maintenance (O&M) Program for the entire 

sewage system. 

2. Keep maintenance records on all major electrical and mechanical components of the 

treatment plant, as well as the sewage system and pumping stations. Such records 

must clearly specify the frequency and type of maintenance recommended by the 

manufacturer and must show the frequency and type of maintenance performed. 

3. Make maintenance records available for inspection at all times. 

C. Short-term Reduction

The Permittee must schedule any facility maintenance, which might require interruption of 

wastewater treatment and degrade effluent quality, during noncritical water quality periods 

and carry this maintenance out in a manner approved by Ecology. 

If a Permittee contemplates a reduction in the level of treatment that would cause a violation 

of permit discharge limits on a short-term basis for any reason, and such reduction cannot be 

avoided, the Permittee must: 

1. Give written notification to Ecology, if possible, thirty (30) days prior to such activities. 

2. Detail the reasons for, length of time of, and the potential effects of the reduced 

level of treatment. 

This notification does not relieve the Permittee of its obligations under this permit. 
Page 22 of 49 

Permit No. WA-002958-1 

D. Electrical Power Failure

The Permittee must ensure that adequate safeguards prevent the discharge of untreated 

wastes or wastes not treated in accordance with the requirements of this permit during 

electrical power failure at the treatment plant and/or sewage lift stations. Adequate 

safeguards include, but are not limited to, alternate power sources, standby generator(s), or 

retention of inadequately treated wastes. 

The Permittee must maintain Reliability Class II (EPA 430/9-74-001) at the wastewater 

treatment plant. Reliability Class II requires a backup power source sufficient to operate all 

vital components and critical lighting and ventilation during peak wastewater flow 

conditions. Vital components used to support the secondary processes (i.e., mechanical 

aerators or aeration basin air compressors) need not be operable to full levels of treatment, 

but must be sufficient to maintain the biota. 

E. Prevent Connection of Inflow

The Permittee must strictly enforce its sewer ordinances and not allow the connection of 

inflow (roof drains, foundation drains, etc.) to the sanitary sewer system. 

F. Bypass Procedures

This permit prohibits a bypass which is the intentional diversion of waste streams from any 

portion of a treatment facility. Ecology may take enforcement action against a Permittee 

for a bypass unless one of the following circumstances (1, 2, or 3) applies. 

1. 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 limits 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 (10) days before the date of the bypass. 

2. Bypass which is unavoidable, unanticipated, and results in noncompliance of this permit. 

This bypass is permitted only if: 

a. 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. 

b. No feasible alternatives to the bypass exist, such as: 

• The use of auxiliary treatment facilities. 
Page 23 of 49 

Permit No. WA-002958-1 

• Retention of untreated wastes. 

• Stopping production. 

• Maintenance during normal periods of equipment downtime, but not if the 

Permittee should have installed adequate backup equipment in the exercise of 

reasonable engineering judgment to prevent a bypass. 

• Transport of untreated wastes to another treatment facility or preventative 

maintenance. 

c. Ecology is properly notified of the bypass as required in Condition S3E of this permit. 

3. If bypass is anticipated and has the potential to result in noncompliance of this permit. 

a. The Permittee must notify Ecology at least thirty (30) days before the planned 

date of bypass. The notice must contain: 

• A description of the bypass and its cause. 

• An analysis of all known alternatives which would eliminate, reduce, or 

mitigate the need for bypassing. 

• A cost-effectiveness analysis of alternatives, including comparative resource 

damage assessment. 

• The minimum and maximum duration of bypass under each alternative. 

• A recommendation as to the preferred alternative for conducting the bypass. 

• The projected date of bypass initiation. 

• A statement of compliance with SEPA. 

• 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. 

• Details of the steps taken or planned to reduce, eliminate, and prevent 

reoccurrence of the bypass. 

b. For probable construction bypasses, the Permittee must notify Ecology of the 

need to bypass as early in the planning process as possible. The Permittee must 

consider the analysis required above during preparation of the engineering report 

or facilities plan and plans and specifications and must include these to the extent 

practical. In cases where the Permittee determines the probable need to bypass 

early, the Permittee must continue to analyze conditions up to and including the 

construction period in an effort to minimize or eliminate the bypass. 
Page 24 of 49 

Permit No. WA-002958-1 

c. Ecology will consider the following prior to issuing an Administrative Order for 

this type of bypass: 

• If the bypass is necessary to perform construction or maintenance-related 

activities essential to meet the requirements of this permit. 

• If feasible alternatives to bypass exist, 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. 

• If the Permittee planned and scheduled the bypass to minimize adverse 

effects on the public and the environment. 

After consideration of the above and the adverse effects of the proposed bypass and 

any other relevant factors, Ecology will approve or deny the request. Ecology will 

give the public an opportunity to comment on bypass incidents of significant duration, 

to the extent feasible. Ecology will approve a request to bypass by issuing an 

Administrative Order under RCW 90.48.120. 

G. Operation and Maintenance Manual

The Permittee must: 

1. Review the Operation and Maintenance (O&M) Manual at least annually. 

2. Submit to Ecology for review and approval substantial changes or updates to the 

O&M Manual whenever it incorporates them into the manual. 

3. Keep the approved O&M Manual at the permitted facility. 

4. Follow the instructions and procedures of this manual. 

In addition to the requirements of WAC 173-240-080 (1) through (5), the O&M Manual or 

other plant-related manuals must include: 

1. Emergency procedures for cleanup in the event of wastewater system upset or failure. 

2. Wastewater system maintenance procedures that contribute to the generation of process 

wastewater. 

3. Any directions to maintenance staff when cleaning or maintaining other equipment or 

performing other tasks which are necessary to protect the operation of the wastewater 

system (for example, defining maximum allowable discharge rate for draining a tank, 

blocking all floor drains before beginning the overhaul of a stationary engine). 

4. The treatment plant process control monitoring schedule. 

5. Minimum staffing adequate to operate and maintain the treatment processes and 

carry out compliance monitoring required by the permit. 
Page 25 of 49 

Permit No. WA-002958-1 

S6. PRETREATMENT 

A. General Requirements

1. The Permittee must implement the Industrial Pretreatment Program in accordance with 

King County Code 28.84.060 and 28.82 as amended by King County Ordinance No. 

11963 on January 1, 1996, legal authorities, policies, procedures, and financial 

provisions described in the Permittee's approved pretreatment program submittal entitled 

"Industrial Pretreatment Program" and dated April 27, 1981; any approved revisions 

thereto; and the General Pretreatment Regulations (40 CFR Part 403), including any 

revisions to 40 CFR Part 403. At a minimum, the Permittee must undertake the 

following pretreatment implementation activities: 

a. Enforce categorical pretreatment standards under Section 307(b) and (c) of the 

Federal Clean Water Act (hereinafter, the Act), prohibited discharge standards as set 

forth in 40 CFR 403.5, local limits , or state standards, whichever are most stringent 

or apply at the time of issuance or modification of a local industrial waste discharge 

permit. Locally-derived limits are defined as pretreatment standards under Section 

307(d) of the Act and are not limited to categorical industrial facilities. 

b. Issue industrial waste discharge permits to all significant industrial users [SIUs, as 

defined in 40 CFR 403.3(t)(i)(ii)] contributing to the treatment system, including 

those from other jurisdictions. Industrial waste discharge permits must contain, as 

a minimum, all the requirements of 40 CFR 403.8 (f)(l)(iii). The Permittee must 

coordinate the permitting process with Ecology regarding any industrial facility 

which may possess a state waste discharge permit issued by Ecology. 

c. Maintain and update, as necessary, records identifying the nature, character, and 

volume of pollutants contributed by industrial users to the POTW. The Permittee 

must maintain records for at least a three-year period. 

d. Perform inspections, surveillance, and monitoring activities on industrial users to 

determine or confirm compliance with pretreatment standards and requirements. 

The Permittee must conduct a thorough inspection of SIUs annually, except that 

Middle Tier Categorical Industrial Users as defined by 40 CFR 

403.8(f)(2)(v)(B)&(C) need only be inspected once every two years. The 

Permittee must conduct regular local monitoring of SIU wastewaters 

commensurate with the character and volume of the wastewater but not less than 

once per year, except for Middle-Tier Categorical Industrial Users which may be 

sampled once every two years. The Permittee must collect and analyze samples 

in accordance with 40 CFR Part 403.12(b)(5)(ii)-(v) and 40 CFR Part 136. 

e. Enforce and obtain remedies for noncompliance by any industrial users with 

applicable pretreatment standards and requirements. Once violations have been 

identified, the Permittee must take timely and appropriate enforcement action to 

address the noncompliance. The Permittee's action must follow its enforcement 

response procedures and any amendments, thereof. 
Page 26 of 49 

Permit No. WA-002958-1 

f. Publish, at least annually, in a newspaper of general circulation that provides 

meaningful public notice within the Permittee's service area, a list of all 

nondomestic users which, at any time in the previous 12 months, were in 

significant noncompliance as defined in 40 CFR 403.8(f)(2)(viii). 

g. If the Permittee elects to conduct sampling of an SIU's discharge in lieu of 

requiring user self-monitoring, it must satisfy all requirements of 40 CFR Part 

403.12. This includes monitoring and record keeping requirements of Sections 

403.12(g) and (o). For SIUs subject to categorical standards (CIUs), the 

Permittee may either complete baseline and initial compliance reports for the CIU 

[when required by 403.12(b) and (d)] or require these of the CIU. The Permittee 

must ensure SIUs are provided the results of sampling in a timely manner, inform 

SIUs of their right to sample, their obligations to report any sampling they do, to 

respond to noncompliance, and to submit other notifications. These include a slug 

load report [403.12(f)], notice of changed discharge [403.12(j)], and hazardous 

waste notifications [403.12(p)]. If sampling for the SIU, the Permittee must not 

sample less than once in every six-month period unless the Permittee's approved 

program includes procedures for reduction of monitoring for Middle Tier or 

Non-Significant Categorical Users per 403.12(e)(2) and (3) and those procedures 

have been followed. 

h. Develop and maintain a data management system designed to track the status of 

the Permittee's industrial user inventory, industrial user discharge characteristics, 

and compliance status. 

i. Maintain adequate staff, funds, and equipment to implement its pretreatment 

program. 

j. Establish, where necessary, contracts or legally-binding agreements with 

contributing jurisdictions to ensure compliance with applicable pretreatment 

requirements by commercial or industrial users within these jurisdictions. These 

contracts or agreements must identify the agency responsible for the various 

implementation and enforcement activities to be performed in the contributing 

jurisdiction. 

2. Per 40 CFR 403.8(f)(2)(vi), the Permittee must evaluate each Significant Industrial 

User to determine if a Slug Control Plan is needed to prevent slug discharges which 

may cause interference, pass-through, or in any other way result in violations of the 

Permittee’s regulations, local limits, or permit conditions. The Slug Control Plan 

evaluation shall occur within one year of a user’s designation as a Significant 

Industrial User. In accordance with 40 CFR 403.8(f)(1)(iii)(B)(6), the Permittee 

shall include slug discharge control requirements in an SIU’s permit if the Permittee 

determines that they are necessary. 

3. Whenever Ecology determines that any waste source contributes pollutants to the 

Permittee's treatment works in violation of Subsection (b), (c), or (d) of Section 

307 of the Act, and the Permittee has not taken adequate corrective action, Ecology 
Page 27 of 49 

Permit No. WA-002958-1 

will notify the Permittee of this determination. If the Permittee fails to take 

appropriate enforcement action within thirty (30) days of this notification, Ecology 

may take appropriate enforcement action against the source or the Permittee. 

4. Pretreatment Report 

The Permittee must provide to Ecology an annual report that briefly describes its 

program activities during the previous calendar year. 

By March 31st of each year, the Permittee must send the annual report to Ecology at: 

Water Quality Permit Coordinator 

Department of Ecology 

Northwest Regional Office 

3190 160th Avenue SE 

Bellevue, WA 98008-5452 

The report must include the following information: 

a. An updated listing of nondomestic industrial dischargers. 

b. Results of wastewater sampling at the treatment plant as specified in 

Subsection B below. The Permittee must calculate removal rates for each 

pollutant and evaluate the adequacy of the existing local limits in prevention 

of treatment plant interference, pass-through of pollutants that could affect 

receiving water quality, and sludge contamination. 

c. Status of program implementation, including: 

i. Any substantial modifications to the pretreatment program as originally 

approved by Ecology, including staffing and funding levels. 

ii. Any interference, upset, or permit violations experienced at the POTW 

that are directly attributable to wastes from industrial users. 

iii. Listing of industrial users inspected and/or monitored, and a summary of 

the results. 

iv. Listing of industrial users scheduled for inspection and/or monitoring for 

the next year, and expected frequencies. 

v. Listing of industrial users notified of promulgated pretreatment standards 

and/or local standards as required in 40 CFR 403.8(f)(2)(iii). The list 

must indicate which industrial users are on compliance schedules and the 

final date of compliance for each. 

vi. Listing of industrial users issued industrial waste discharge permits. 
Page 28 of 49 

Permit No. WA-002958-1 

vii. Planned changes in the pretreatment program implementation plan. (See 

Subsection A.6. below.) 

d. Status of compliance activities, including: 

i. Listing of industrial users that failed to submit baseline monitoring 

reports or any other reports required under 40 CFR 403.12 and in the 

Permittee's pretreatment program, dated April 27, 1981. 

ii. Listing of industrial users that were at any time during the reporting 

period not complying with federal, state, or local pretreatment standards 

or with applicable compliance schedules for achieving those standards, 

and the duration of such noncompliance. 

iii. Summary of enforcement activities and other corrective actions taken or 

planned against noncomplying industrial users. The Permittee must 

supply to Ecology a copy of the public notice of facilities that were in 

significant noncompliance. 

5. The Permittee must request and obtain approval from Ecology before making any 

significant changes to the approved local pretreatment program. The Permittee 

must follow the procedure in 40 CFR 403.18 (b) and (c). 

B. Monitoring Requirements

The Permittee must monitor its influent, effluent, and sludge for the priority pollutants 

identified in Tables II and III of Appendix D of 40 CFR Part 122 as amended, any 

compounds identified as a result of Condition S6.B.4, and any other pollutants expected 

from nondomestic sources using U.S. EPA-approved procedures for collection, 

preservation, storage, and analysis. The Permittee must test influent, effluent, and sludge 

samples for the priority pollutant metals (Table III, 40 CFR 122, Appendix D) on a 

quarterly basis throughout the term of this permit. The Permittee must test influent, 

effluent, and sludge samples for the organic priority pollutants (Table II, 40 CFR 122, 

Appendix D) on an annual basis. Methods identified in Appendix A may be used. 

1. The Permittee must sample POTW influent and effluent on a day when industrial 

discharges are occurring at normal-to-maximum levels. The Permittee must obtain 

24-hour composite samples for the analysis of acid and base/neutral extractable 

compounds and metals. The Permittee must collect samples for the analysis of 

volatile organic compounds and samples must be collected using grab sampling 

techniques at equal intervals for a total of four grab samples per day. 

 The laboratory may run a single analysis for volatile pollutants (using GC/MS 

procedures approved by 40 CFR 136 ) for each monitoring day by compositing 

equal volumes of each grab sample directly in the GC purge and trap apparatus in 

the laboratory, with no less than 1 ml of each grab included in the composite. 
Page 29 of 49 

Permit No. WA-002958-1 

 Unless otherwise indicated, all reported test data for metals must represent the total 

amount of the constituent present in all phases, whether solid, suspended, or dissolved, 

elemental or combined, including all oxidation states. 

 The Permittee must handle, prepare, and analyze all wastewater samples taken for 

GC/MS analysis using procedures approved by 40 CFR 136. 

2. The Permittee must collect a sludge sample concurrently with a wastewater sample as 

a single grab sample of residual sludge. Sampling and analysis must be performed 

using procedures approved by 40 CFR 136 unless the Permittee requests an alternate 

method and Ecology has approved. 

3. The Permittee must take cyanide, phenols, and oils as grab samples. Oils must be 

hexane soluble or equivalent, and should be measured in the influent and effluent only. 

4. In addition to quantifying pH, oil and grease, and all priority pollutants, the Permittee 

must make a reasonable attempt to identify all other substances and quantify all 

pollutants shown to be present by gas chromatograph/mass spectrometer (GC/MS) 

analysis using procedures approved by 40 CFR 136. The Permittee should attempt to 

make determinations of pollutants for each fraction, which produces identifiable spectra 

on total ion plots (reconstructed gas chromatograms). The Permittee should attempt to 

make determinations from all peaks with responses 5% or greater than the nearest 

internal standard. The 5% value is based on internal standard concentrations of 30 μg/l, 

and must be adjusted downward if higher internal standard concentrations are used or 

adjusted upward if lower internal standard concentrations are used. The Permittee may 

express results for non-substituted aliphatic compounds as total hydrocarbon content. 

The Permittee must use a laboratory whose computer data processing programs are 

capable of comparing sample mass spectra to a computerized library of mass spectra, 

with visual confirmation by an experienced analyst. For all detected substances which 

are determined to be pollutants, the Permittee must conduct additional sampling and 

appropriate testing to determine concentration and variability, and to evaluate trends. 

C. Reporting of Monitoring Results

The Permittee must include a summary of monitoring results in the Annual Pretreatment 

Report. 

D. Local Limit Development

As sufficient data become available, the Permittee must, in consultation with Ecology, 

reevaluate their local limits in order to prevent pass-through or interference. If Ecology 

determines that any pollutant present causes pass-through or interference, or exceeds 

established sludge standards, the Permittee must establish new local limits or revise existing 

local limits as required by 40 CFR 403.5. Ecology may also require the Permittee to revise or 

establish local limits for any pollutant discharged from the POTW that has a reasonable 

potential to exceed the water quality standards, sediment standards, or established effluent 

limits, or causes whole effluent toxicity. Ecology makes this determination in the form of an 

Administrative Order. 
Page 30 of 49 

Permit No. WA-002958-1 

Ecology may modify this permit to incorporate additional requirements relating to the 

establishment and enforcement of local limits for pollutants of concern. Any permit 

modification is subject to formal due process procedures under state and federal law 

and regulation. 

E. Source Tracking Characterization

In order to more fully characterize industrial discharges to the South WWTP, the 

Permittee must conduct a pollutant analysis for metals, cyanide, phenols, volatile 

compounds, acid compounds, and base/neutral compounds, as described in 

Appendix A, of at least one industry in each of the metal-finishing/electroplating, 

centralized waste treatment, plastic products, coil coating, and food processing 

categories. The results of the analysis must be included with the permit renewal 

application. 

S7. RESIDUAL SOLIDS 

Residual solids include screenings, grit, scum, sludge (primary sludge and waste-activated 

sludge), and other solid waste. The Permittee shall store and handle all residual solids in 

such a manner so as to prevent their entry into state ground or surface waters. The 

Permittee shall not discharge leachate from residual solids to state surface or ground 

water. 

S8. APPLICATION FOR PERMIT RENEWAL 

The Permittee must submit an application for renewal of this permit by September 30, 2013. 

S9. ENGINEERING DOCUMENTS 

In the event that nondelegated engineering reports, facility plans, or plans and specifications 

are developed during this permit cycle for the South WWTP, the following elements apply. 

A. The Permittee must prepare and submit two copies of an approvable engineering report 

or facility plan in accordance with Chapter 173-240 WAC to Ecology for review and 

approval. 

B. The report must contain any appropriate requirements as described in Water 

Reclamation and Reuse Standards (Washington State Department of Ecology and 

Department of Health Publication No. 97-23, 1997). As required by RCW 90.48.112, 

the report must address the feasibility of using reclaimed water as defined in RCW 

90.46.010. 

C. The Permittee must prepare and submit two copies of approvable plans and 

specifications to Ecology for review and approval in accordance with Chapter 173-240 

WAC. 

D. Prior to the start of construction, the Permittee must submit to Ecology a quality 

assurance plan as required by Chapter 173-240 WAC. 
Page 31 of 49 

Permit No. WA-002958-1 

S10. SPILL CONTROL PLAN 

The Permittee must: 

1. Submit to Ecology an update to the existing Spill Control Plan by September 30, 2010. 

2. Review the plan at least annually and update the Spill Control Plan as needed. 

3. Send changes to the plan to Ecology. 

4. Follow the plan and any supplements throughout the term of the permit. 

The Spill Control Plan must include the following: 

1. A list of all oil and petroleum products and other materials used and/or stored on-site, 

which when spilled, or otherwise released into the environment, designate as 

dangerous waste (DW) or extremely hazardous waste (EHW) by the procedures set 

forth in WAC 173-303-070. Include other materials used and/or stored on-site which 

may become pollutants or cause pollution upon reaching state's waters. 

2. A description of preventive measures and facilities (including an overall facility 

plot showing drainage patterns) which prevent, contain, or treat spills of these 

materials. 

3. A description of the reporting system the Permittee will use to alert responsible 

managers and legal authorities in the event of a spill. 

4. A description of operator training to implement the plan. 

The Permittee may submit plans and manuals required by 40 CFR Part 112, contingency 

plans required by Chapter 173-303 WAC, or other plans required by other agencies which 

meet the intent of this section. 

S11. RECEIVING WATER CHARACTERIZATION 

In the vicinity of the South WWTP outfall, the Permittee must provide data via ambient 

monitoring stations or collect receiving water information via field sampling necessary to 

determine if the effluent has a reasonable potential to cause a violation of the water quality 

standards. If reasonable potential exists, Ecology will use this information to calculate 

effluent limits. Field sampling will be required where ambient monitoring station data does 

not exist. 

For field sampling activities, the Permittee must: 

1. Submit a Sampling and Quality Assurance Plan for Ecology review and approval by 

September 30, 2011. 
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Permit No. WA-002958-1 

2. Conduct all sampling and analysis in accordance with the guidelines given in Guidelines 

for Preparing Quality Assurance Project Plans for Environmental Studies, Ecology 

Publication No. 04-03-030. This document is available at 

http://www.ecy.wa.gov/programs/eap/qa/docs/QAPPtool/Mod3%20Guidelines/GuidelinesforPrep

aringQAPPS.pdf . 

3. Locate the receiving water sampling locations outside the zone of influence of the 

effluent. 

4. Use sampling station accuracy requirements of ± 20 meters. 

5. Time the sampling as close as possible to the critical period. 

6. Follow the clean sampling techniques (Method 1669: Sampling Ambient Water for 

Trace Metals at EPA Water Quality Criteria Levels, EPA Publication No. 

821-R-95-034, April 1995). 

7. Collect at least ten receiving water samples and analyze the samples for total suspended 

solids, dissolved oxygen, alkalinity, temperature, pH, fecal coliform bacteria, and 

salinity. 

8. In addition, analyze the samples for both the total and dissolved fractions for the 

following metals: antimony, mercury, cyanide, zinc, arsenic, copper, lead, silver, 

cadmium, nickel, and chromium. 

9. Conduct all chemical analysis using the methods and the detection levels identified in 

Appendix A or as approved in the Sampling and Quality Assurance Plan. 

10. Submit the results of the study to Ecology by September 30, 2013. 

Any subsequent sampling and analysis must also meet these requirements. The Permittee 

may conduct a cooperative receiving water study with other NPDES Permittees discharging 

in the same vicinity. 

S12. SEDIMENT MONITORING 

A. Sediment Sampling and Analysis Plan

 The Permittee is required to sample and analyze sediments in the vicinity of South 

Wastewater Treatment Plant’s outfall. 

 The Permittee must submit to Ecology for review and approval a Sediment Sampling 

and Analysis Plan for sediment monitoring by October 1, 2010. The purpose of the 

plan is to characterize sediment quality (i.e. the nature and extent of any possible 

chemical contamination and biological toxicity) in the vicinity of the Permittee’s 

discharge locations. The Permittee must follow the guidance provided in the Sediment 

Source Control Standards User Manual, Appendix B: Sediment Sampling and Analysis 

Plan (Ecology, 2008). 
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Permit No. WA-002958-1 

B. Sediment Data Report

Following Ecology-approval of the Sediment Sampling and Analysis Plan, the Permittee 

must collect sediments between July 1st and September 30th. The Permittee must submit to 

Ecology a Sediment Data Report containing the results of the sediment sampling and 

analysis no later than October 1, 2012. The Sediment Data Report must conform to the 

approved Sediment Sampling and Analysis Plan. 

The Sediment Data Report must also include electronic copies of the sediment chemical 

and biological data formatted according to Ecology’s Environmental Information (EIM) 

System templates available at the link below. 

http://www.ecy.wa.gov/programs/tcp/smu/eim/myEIM_hp.htm

C. Source of Sediment Toxicity Study

If the sediment evaluation shows toxicity at any station, the Permittee must perform 

additional testing to investigate the source of sediment toxicity. This testing may include, 

but is not limited to, toxicity identification procedures, characterization of the whole 

effluent, and particulate matter in the effluent. Toxicity investigations must commence 

within thirty (30) days of receiving sediment bioassay results that do not meet the 

Sediment Management Standards SQS criteria. 

The Permittee must submit to Ecology the results of the sediment toxicity investigation 

within three months of completion of testing. 

S13. OUTFALL EVALUATION 

The Permittee must inspect, once during the life of this permit, the submerged portion of 

the outfall lines and diffusers to document its integrity and continued function. Include 

digital video verification in the report. By September 30, 2012, the Permittee must submit 

the inspection report to Ecology. If the outfall evaluation concludes that repairs need to be 

made to the outfall lines and/or diffusers, the Permittee must submit a report to Ecology 

by September 30, 2013, describing the proposed plan to address the necessary repairs. 

S14. ACUTE TOXICITY 

A. Acute Toxicity Testing

The Permittee must: 

1. Conduct acute toxicity testing on final effluent during the third quarter of 2012 and 

first quarter of 2013. 

2. Submit the results to Ecology with the permit renewal application. 

3. Conduct acute toxicity testing on a series of at least five concentrations of effluent, 

including the acute critical effluent concentration (ACEC), 100% effluent, and a 
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Permit No. WA-002958-1 

control. The ACEC equals 0.54% effluent (equals 1 divided by the acute dilution 

factor of 186 times 100). 

4. Use each of the following species and protocols for each acute toxicity test: 

Acute Toxicity Tests Species Method 

Fathead minnow 96-hour 

static-renewal test 

Pimephales promelas EPA-821-R-02-012 

Daphnid 48-hour static test Ceriodaphnia dubia, 

Daphnia pulex, or 

Daphnia magna

EPA-821-R-02-012 

B. Sampling and Reporting Requirements

1. The Permittee must submit all reports for toxicity testing in accordance with the 

most recent version of Department of Ecology Publication No. WQ-R-95-80, 

Laboratory Guidance and Whole Effluent Toxicity Test Review Criteria. Reports 

must contain bench sheets and reference toxicant results for test methods. If the 

lab provides the toxicity test data in electronic format for entry into Ecology’s 

database, then the Permittee must send the data to Ecology along with the test 

report, bench sheets, and reference toxicant results. 

2. The Permittee must collect 24-hour composite effluent samples for toxicity testing. 

The Permittee must cool the samples to 0 - 6 degrees Celsius during collection and 

send them to the lab immediately upon completion. The lab must begin the 

toxicity testing as soon as possible but no later than 36 hours after sampling was 

completed. 

3. The laboratory must conduct water quality measurements on all samples and test 

solutions for toxicity testing, as specified in the most recent version of Department 

of Ecology Publication No. WQ-R-95-80, Laboratory Guidance and Whole 

Effluent Toxicity Test Review Criteria. 

4. All toxicity tests must meet quality assurance criteria and test conditions specified 

in the most recent versions of the EPA methods listed in Subsection C and the 

Department of Ecology Publication No. WQ-R-95-80, Laboratory Guidance and 

Whole Effluent Toxicity Test Review Criteria. If Ecology determines any test 

results to be invalid or anomalous, the Permittee must repeat the testing with 

freshly-collected effluent. 

5. The laboratory must use control water and dilution water meeting the requirements 

of the EPA methods listed in Subsection A or pristine natural water of sufficient 

quality for good control performance. 

6. The Permittee must collect effluent samples for whole effluent toxicity testing just 

prior to the chlorination step in the treatment process. 
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Permit No. WA-002958-1 

7. The Permittee may choose to conduct a full dilution series test during compliance 

testing in order to determine dose response. In this case, the series must have a 

minimum of five effluent concentrations and a control. The series of 

concentrations must include the acute critical effluent concentration (ACEC). The 

ACEC equals 0.54% effluent. 

8. All whole effluent toxicity tests, effluent screening tests, and rapid screening tests 

that involve hypothesis testing must comply with the acute statistical power 

standard of 29% as defined in WAC 173-205-020. If the test does not meet the 

power standard, the Permittee must repeat the test on a fresh sample with an 

increased number of replicates to increase the power. 

9. Reports of individual characterization or compliance test results must be submitted 

to Ecology within sixty (60) days after each test has concluded. 

10. The Acute Toxicity Summary Report must be submitted to Ecology by September 30, 

2013. 

S15. CHRONIC TOXICITY 

A. Chronic Toxicity Testing 

The Permittee must: 

1. Conduct chronic toxicity testing on final effluent during the fourth quarter of 2012 

and the first quarter of 2013. 

2. Submit the results to Ecology with the permit renewal application. 

3. Conduct chronic toxicity testing on a series of at least five concentrations of 

effluent and a control. This series of dilutions must include the acute critical 

effluent concentration (ACEC). The ACEC equals 0.54% effluent. 

4. Compare the ACEC to the control using hypothesis testing at the 0.05 level of 

significance as described in Appendix H, EPA/600/4-89/001. 

5. Perform chronic toxicity tests with all of the following species and the most recent 

version of the following protocols: 

Saltwater Chronic Test Species Method 

Topsmelt survival and growth Atherinops affinis EPA/600/R-95/136 

Mysid shrimp survival and growth Mysidopsis bahia/ 

Americamysis bahia

EPA-821-R-02-014 
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Permit No. WA-002958-1 

B. Sampling and Reporting Requirements

1. The Permittee must submit all reports for toxicity testing in accordance with the most 

recent version of Department of Ecology Publication No. WQ-R-95-80, Laboratory 

Guidance and Whole Effluent Toxicity Test Review Criteria. Reports must contain 

bench sheets and reference toxicant results for test methods. If the lab provides the 

toxicity test data in electronic format for entry into Ecology’s database, then the 

Permittee must send the data to Ecology along with the test report, bench sheets, and 

reference toxicant results. 

2. The Permittee must collect 24-hour composite effluent samples for toxicity testing. 

The Permittee must cool the samples to 0 - 6 degrees Celsius during collection and 

send them to the lab immediately upon completion. The lab must begin the toxicity 

testing as soon as possible but no later than 36 hours after sampling was completed. 

3. The laboratory must conduct water quality measurements on all samples and test 

solutions for toxicity testing, as specified in the most recent version of Department 

of Ecology Publication No. WQ-R-95-80, Laboratory Guidance and Whole Effluent 

Toxicity Test Review Criteria. 

4. All toxicity tests must meet quality assurance criteria and test conditions specified in 

the most recent versions of the EPA methods listed in Subsection C and the Department 

of Ecology Publication No. WQ-R-95-80, Laboratory Guidance and Whole Effluent 

Toxicity Test Review Criteria. If Ecology determines any test results to be invalid or 

anomalous, the Permittee must repeat the testing with freshly-collected effluent. 

5. The laboratory must use control water and dilution water meeting the requirements 

of the EPA methods listed in Subsection C or pristine natural water of sufficient 

quality for good control performance. 

6. The Permittee must collect effluent samples for whole effluent toxicity testing just 

prior to the chlorination step in the treatment process. 

7. The Permittee may choose to conduct a full dilution series test during compliance 

testing in order to determine dose response. In this case, the series must have a 

minimum of five effluent concentrations and a control. The series of concentrations 

must include the CCEC and the ACEC. The CCEC and the ACEC may either 

substitute for the effluent concentrations that are closest to them in the dilution series 

or be extra effluent concentrations. The CCEC equals 0.44% effluent. The ACEC 

equals 0.54% effluent. 

8. All whole effluent toxicity tests that involve hypothesis testing must comply with 

the chronic statistical power standard of 39% as defined in WAC 173-205-020. If 

the test does not meet the power standard, the Permittee must repeat the test on a 

fresh sample with an increased number of replicates to increase the power. 

9. Reports of individual characterization or compliance test results must be submitted 

to Ecology within sixty (60) days after each test completion. 
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Permit No. WA-002958-1 

10. The Chronic Toxicity Summary Report must be submitted to Ecology by 

September 30, 2013. 

S16. USE OF EFFLUENT RETURNED FOR DISCHARGE THROUGH THE EFFLUENT 

TRANSFER SYSTEM 

The Permittee may distribute effluent from the effluent transfer system (ETS) for use and 

return to the ETS for discharge via Outfall #001 of this permit – without modification of this 

permit – under the following conditions: 

1. The distributed ETS effluent must meet all treatment and disinfection requirements of 

Condition S1 of this permit. 

2. The effluent is used at the Boeing facility in the approved, closed loop, noncontact 

Chiller project. 

3. The Permittee may distribute ETS effluent to a similar closed-loop, noncontact system 

only after it requests and receives specific written approval from both the Departments 

of Ecology and Health. 

4. The effluent returned to the ETS system for discharge via Outfall #001 must meet all 

permit requirements for that discharge. 

5. The Permittee obtains, files, and enforces a signed user contract assuring compliance with 

all requirements of the approved project. All new contracts must be approved by the 

Departments of Ecology and Health and signed by all parties prior to any distribution of 

the effluent. 

6. The Permittee immediately notifies all users during instances of noncompliance.

No other uses of ETS effluent are authorized under this permit. 

S17. NITROGEN REDUCTION STUDY 

Ecology has two studies underway to inform on the impacts of nutrient-laden discharges to Puget 

Sound. The South Sound Dissolved Oxygen Study, along with the Puget Sound Hydrodynamic 

Modeling, is expected to be completed by December 2010. 

Upon completion of both the South Puget Sound Dissolved Oxygen Study and Hydrodynamic 

Modeling, Ecology will determine whether the discharge from King County’s South WWTP is 

significantly and quantifiably impacting dissolved oxygen levels in South Puget Sound. If 

Ecology concludes that there is a significant and quantifiable adverse impact from the South 

WWTP discharge on dissolved oxygen in South Puget Sound, then King County will be required 

to submit a Nitrogen Reduction Study which shall evaluate feasible alternatives to reduce nitrogen 

contributions from the South WWTP discharge. Ecology will specify the requirements of the 

submittal in an Administrative Order. If required, the Nitrogen Reduction Study is due to 

Ecology by June 30, 2013. 
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Permit No. WA-002958-1 

GENERAL CONDITIONS 

G1. SIGNATORY REQUIREMENTS 

A. All applications, reports, or information submitted to Ecology must be signed and 

certified. 

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

For the purpose of this section, a 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 manufacturing, 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 recommendations, 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 accurate information for permit application requirements; and 

where authority to sign documents has been assigned or delegated to the manager 

in accordance with corporate procedures. 

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

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

4. In the case of a municipal, state, or other public facility, by either a principal 

executive officer or ranking elected official. 

Applications for permits for domestic wastewater facilities that are either owned or 

operated by, or under contract to, a public entity shall be submitted by the public entity. 

B. All reports required by this permit and other information requested by Ecology must 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 

Ecology. 
Page 39 of 49 

Permit No. WA-002958-1 

2. The authorization specifies either an individual or a position having responsibility 

for the overall operation of the regulated facility, such as the position of plant 

manager, superintendent, position of equivalent responsibility, or an individual or 

position having overall responsibility for environmental matters. (A duly 

authorized representative may thus be either a named individual or any individual 

occupying a named position.) 

C. Changes to authorization. If an authorization under paragraph 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 

B.2, above, must 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 must make the 

following certification: 

“I certify under penalty of law, that this document 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 manage 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 information, including the possibility of fine 

and imprisonment for knowing violations.” 

G2. RIGHT OF INSPECTION AND ENTRY 

The Permittee must 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 must 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 monitoring and 

control equipment), practices, methods, or operations regulated or required under this 

permit. 

D. To sample or monitor, at reasonable times, any substances or parameters at any location 

for purposes of assuring permit compliance or as otherwise authorized by the Clean 

Water Act. 
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Permit No. WA-002958-1 

G3. PERMIT ACTIONS 

This permit may be modified, revoked and reissued, or terminated either at the request of 

any interested person (including the Permittee) or upon Ecology’s initiative. However, the 

permit may only be modified, revoked and reissued, or terminated for the reasons specified 

in 40 CFR 122.62, 40 CFR 122.64 or WAC 173-220-150 according to the procedures of 40 

CFR 124.5. 

A. The following are causes for terminating this permit during its term, or for denying a 

permit renewal application: 

1. Violation of any permit term or condition. 

2. Obtaining a permit by misrepresentation or failure to disclose all relevant facts. 

3. A material change in quantity or type of waste disposal. 

4. A determination that the permitted activity endangers human health or the 

environment, or contributes to water quality standards violations and can only be 

regulated to acceptable levels by permit modification or termination. 

5. A change in any condition that requires either a temporary or permanent reduction, 

or elimination of any discharge or sludge use or disposal practice controlled by the 

permit. 

6. Nonpayment of fees assessed pursuant to RCW 90.48.465. 

7. Failure or refusal of the Permittee to allow entry as required in RCW 90.48.090. 

B. The following are causes for modification but not revocation and reissuance except 

when the Permittee requests or agrees: 

1. A material change in the condition of the waters of the state. 

2. New information not available at the time of permit issuance that would have 

justified the application of different permit conditions. 

3. Material and substantial alterations or additions to the permitted facility or 

activities which occurred after this permit issuance. 

4. Promulgation of new or amended standards or regulations having a direct bearing 

upon permit conditions, or requiring permit revision. 

5. The Permittee has requested a modification based on other rationale meeting the 

criteria of 40 CFR Part 122.62. 

6. Ecology has determined that good cause exists for modification of a compliance 

schedule, and the modification will not violate statutory deadlines. 
Page 41 of 49 

Permit No. WA-002958-1 

7. Incorporation of an approved local pretreatment program into a municipality’s 

permit. 

C. The following are causes for modification or alternatively revocation and reissuance: 

1. When cause exists for termination for reasons listed in A1 through A7 of this 

section, and Ecology determines that modification or revocation and reissuance is 

appropriate. 

2. When Ecology has received notification of a proposed transfer of the permit. A 

permit may also be modified to reflect a transfer after the effective date of an 

automatic transfer (General Condition G8) but will not be revoked and reissued 

after the effective date of the transfer except upon the request of the new Permittee. 

G4. REPORTING PLANNED CHANGES 

The Permittee must, as soon as possible, but no later than sixty (60) days prior to the 

proposed changes, give notice to Ecology of planned physical alterations or additions to the 

permitted facility, production increases, or process modification which will result in: 

1) the permitted facility being determined to be a new source pursuant to 40 CFR 122.29(b); 

2) a significant change in the nature or an increase in quantity of pollutants discharged; or 

3) a significant change in the Permittee’s sludge use or disposal practices. Following such 

notice, and the submittal of a new application or supplement to the existing application, 

along with required engineering plans and reports, this permit may be modified, or revoked 

and reissued pursuant to 40 CFR 122.62(a) to specify and limit any pollutants 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. 

G5. PLAN REVIEW REQUIRED 

Prior to constructing or modifying any wastewater control facilities, an engineering report 

and detailed plans and specifications must be submitted to Ecology for approval in 

accordance with Chapter 173-240 WAC. Engineering reports, plans, and specifications 

must be submitted at least one hundred eighty (180) days prior to the planned start of 

construction unless a shorter time is approved by Ecology. Facilities must be constructed 

and operated in accordance with the approved plans. 

G6. COMPLIANCE WITH OTHER LAWS AND STATUTES 

Nothing in this permit must be construed as excusing the Permittee from compliance with 

any applicable federal, state, or local statutes, ordinances, or regulations. 

G7. TRANSFER OF THIS PERMIT 

In the event of any change in control or ownership of facilities from which the authorized 

discharge emanate, the Permittee must notify the succeeding owner or controller of the 

existence of this permit by letter, a copy of which must be forwarded to Ecology. 
Page 42 of 49 

Permit No. WA-002958-1 

A. Transfers by Modification

Except as provided in paragraph (B) below, this permit may be transferred by the 

Permittee to a new owner or operator only if this permit has been modified or revoked 

and reissued under 40 CFR 122.62(b)(2), or a minor modification made under 40 CFR 

122.63(d), to identify the new Permittee and incorporate such other requirements as 

may be necessary under the Clean Water Act. 

B. Automatic Transfers

This permit may be automatically transferred to a new Permittee if: 

1. The Permittee notifies Ecology at least thirty (30) days in advance of the proposed 

transfer date. 

2. The notice includes a written agreement between the existing and new Permittees 

containing a specific date transfer of permit responsibility, coverage, and liability 

between them. 

3. Ecology does not notify the existing Permittee and the proposed new Permittee of 

its intent to modify or revoke and reissue this permit. A modification under this 

subparagraph may also be minor modification under 40 CFR 122.63. If this notice 

is not received, the transfer is effective on the date specified in the written 

agreement. 

G8. REDUCED PRODUCTION FOR COMPLIANCE 

The Permittee, in order to maintain compliance with its permit, must control production 

and/or all discharges upon reduction, loss, failure, or bypass of the treatment facility until 

the facility is restored or an alternative method of treatment is provided. This requirement 

applies in the situation where, among other things, the primary source of power of the 

treatment facility is reduced, lost, or fails. 

G9. REMOVED SUBSTANCES 

Collected screenings, grit, solids, sludges, filter backwash, or other pollutants removed in 

the course of treatment or control of wastewaters must not be resuspended or reintroduced to 

the final effluent stream for discharge to state waters. 

G10. DUTY TO PROVIDE INFORMATION 

The Permittee must 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. The 

Permittee must also submit to Ecology upon request, copies of records required to be kept 

by this permit. 
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Permit No. WA-002958-1 

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 MONITORING 

Ecology may establish specific monitoring requirements in addition to those contained in 

this permit by Administrative Order or permit modification. 

G13. PAYMENT OF FEES 

The Permittee must submit payment of fees associated with this permit as assessed by 

Ecology. 

G14. PENALTIES FOR VIOLATING PERMIT CONDITIONS 

Any person who is found guilty of willfully violating the terms and conditions of this permit 

is deemed guilty of a crime, and upon conviction thereof must be punished by a fine of up to 

ten thousand dollars ($10,000) and costs of prosecution, or by imprisonment in 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 a waste discharge permit will incur, in 

addition to any other penalty as provided by law, a civil penalty in the amount of up to ten 

thousand dollars ($10,000) for every such violation. Each and every such violation is a 

separate and distinct offense, and in case of a continuing violation, every day's continuance 

is deemed to be a separate and distinct violation. 

G15. UPSET 

Definition – “Upset” means an exceptional incident in which there is unintentional and 

temporary noncompliance with technology-based permit effluent limits 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 limits if the requirements of the following paragraph 

are met. 

A Permittee who wishes to establish the affirmative defense of upset must 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 S3.E; and 

4) the Permittee complied with any remedial measures required under S4.C of this permit. 
Page 44 of 49 

Permit No. WA-002958-1 

In any enforcement action the Permittee seeking to establish the occurrence of an upset has 

the burden of proof. 

G16. PROPERTY RIGHTS 

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

G17. DUTY TO COMPLY 

The Permittee must 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. 

G18. TOXIC POLLUTANTS 

The Permittee must comply with effluent standards or prohibitions established under Section 

307(a) of the Clean Water Act for toxic pollutants 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. 

G19. PENALTIES FOR TAMPERING 

The Clean Water Act provides that any person who falsifies, tampers with, or knowingly 

renders inaccurate any monitoring device or method required to be maintained under this 

permit must, upon conviction, be punished by a fine of not more than $10,000 per violation, 

or by imprisonment for not more than two (2) 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 must be a fine of not more than $20,000 per day of violation, or by 

imprisonment of not more than four (4) years, or by both. 

G20. COMPLIANCE SCHEDULES 

Reports of compliance or noncompliance with, or any progress reports on, interim and final 

requirements contained in any compliance schedule of this permit must be submitted no 

later than fourteen (14) days following each schedule date. 

G21. CONTRACT REVIEW 

The Permittee must submit to Ecology any proposed contract for the operation of any 

wastewater treatment facility covered by this permit. The review is to ensure consistency 

with Chapters 90.46 and 90.48 RCW. In the event that Ecology does not comment within a 

thirty (30)-day period, the Permittee may assume consistency and proceed with the contract. 
Page 45 of 49 

Permit No. WA-002958-1 

APPENDIX A 

EFFLUENT CHARACTERIZATION FOR POLLUTANTS 

THIS LIST INCLUDES EPA-REQUIRED POLLUTANTS (PRIORITY POLLUTANTS) 

AND SOME ECOLOGY PRIORITY TOXIC CHEMICALS (PBTs) 

The following table with analytical levels is to be used as guidance for effluent characterization in NPDES permit 

applications and applications for permit renewal. The permit applications will specify the groups of compounds to be 

analyzed. Ecology may require additional groups to be analyzed. The table should also be used as a guide for routine 

effluent monitoring for pollutants specified in the permit. The objectives are to reduce the number of analytical 

“non-detects” in applications and monitoring reports and to measure effluent concentrations near or below criteria values 

where possible at a reasonable cost. If an applicant or Permittee knows that an alternate, less sensitive method (higher DL 

and QL) from 40 CFR Part 136 is sufficient to produce measurable results in their effluent, that method may be used for 

analysis. 

EPA 

307(A) 

REF. # 

Pollutant & CAS No. 

(if available)

Recommended 

Analytical Protocol 

Detection 

(DL)1

(μg/L unless 

specified) 

Quantitation 

Level (QL) 2 

(μg/L unless 

specified)

Lowest 

Criteria 

Values 

(μg/L unless 

specified)

Conventionals 

 Biochemical Oxygen Demand SM5210-B 2 mg/L 

 Chemical Oxygen Demand SM5220-D 10 mg/L 

 Total Organic Carbon SM5310-B/C/D 1 mg/L 

 Total Suspended Solids SM2540-D 5 mg/L 

 Total Ammonia (as N) SM4500-NH3- GH 0.3 mg/L 

 Flow Calibrated device 

 Dissolved oxygen SM4500-OC/OG 0.2 mg/L 

 Temperature (max. 7-day avg.) Analog recorder or use 

micro-recording devices 

known as thermistors 

 

0.2o C 

 pH SM4500-H+ B N/A N/A 

Nonconventionals 

 Total Alkalinity SM2320-B 5 mg/L as 

CaCO3 

 Bromide (24959-67-9) SM4110 B 100 400 

 Chlorine, Total Residual SM4500 Cl G 50.0 7.5 

 Color SM2120 B/C/E 10 color units 

 Fecal Coliform SM 9221E 0 CFU/100mL 0 CFU/100mL 

 Fluoride (16984-48-8) SM4500-F E/SM4110B 25 100 

 Nitrate-Nitrite (as N) SM4500-NO3- E/F/H 100 10,000 

 Nitrogen, Total Kjeldahl (as N) SM4500-NH3-

C/E/FG/SM4500-Norg-B

 300 

 Ortho-Phosphate (PO4 as P) SM4500- PE/PF 100 100 

 Phosphorus, Total (as P) SM4500-PE/PF 100 100 

 Oil and Grease (HEM) 1664A 5,000 

 Radioactivity Table 1E 

 Salinity SM2520-B 3 PSS 

 Settleable Solids SM2540 -F 100 

 Sulfate (as mg/L SO4) SM4110-B 200 

 Sulfide (as mg/L S) SM4500-S2F/D/E/G 200 2.0 

 Sulfite (as mg/L SO3) SM4500-SO3B 2000 

 Surfactants SM5540 C 50 

 Total dissolved solids SM2540 C 20 mg/L 500 mg/L12
Page 46 of 49 

Permit No. WA-002958-1 

EPA 

307(A) 

REF. # 

Pollutant & CAS No. 

(if available)

Recommended 

Analytical Protocol 

Detection 

(DL)1

(μg/L unless 

specified) 

Quantitation 

Level (QL) 2 

(μg/L unless 

specified)

Lowest 

Criteria 

Values 

(μg/L unless 

specified)

 Total Hardness SM2340B 200 as CaCO3

 Aluminum, Total (7429-90-5) 200.8 2.0 10 750 

 Barium Total (7440-39-3) 200.8 0.5 2.0 

 Boron Total (7440-42-8) 200.8 2.0 10.0 

 Cobalt, Total (7440-48-4) 200.8 0.05 0.25 

 Iron, Total (7439-89-6) 200.8 12.5 50 300 

 Magnesium, Total (7439-95-4) 200.8 10 50 

 Molybdenum, Total (7439-98-7) 200.8 0.1 0.5 

 Manganese, Total (7439-96-5) 200.8 0.1 0.5 50 

 Tin, Total (7440-31-5) 200.8 0.3 1.5 

 Titanium, Total (7440-32-6) 200.8 0.5 2.5 

Metals, Cyanide & Total Phenols

114 Antimony, Total (7440-36-0) 200.8 0.3 1.0 145

115 Arsenic, Total (7440-38-2) 200.8 0.1 0.5 367

117 Beryllium, Total (7440-41-7) 200.8 0.1 0.5 48

118 Cadmium, Total (7440-43-9) 200.8 0.05 0.25 0.373

119 Chromium, Total (7440-47-3) 200.8 0.2 1.0 57.23

120 Copper, Total (7440-50-8) 200.8 0.4 2.0 3.13

122 Lead, Total (7439-92-1) 200.8 0.1 0.5 0.543

123 Mercury, Total (7439-97-6) 1631E 0.0002 0.0005 0.0127

124 Nickel, Total (7440-02-0) 200.8 0.1 0.5 8.23

125 Selenium, Total (7782-49-2) 200.8 1.0 1.0 57

126 Silver, Total (7440-22-4) 200.8 0.04 0.2 0.323

127 Thallium, Total (7440-28-0) 200.8 0.09 0.36 1.75

128 Zinc, Total (7440-66-6) 200.8 0.5 2.5 32.33

 Cyanide, Weak Acid Dissociable SM4500-CN-I,E 5 10 

065 Phenols, Total EPA 420.1 50 210005

Dioxin

129 2,3,7,8-Tetra-Chlorodibenzo-P-Dioxin 

(176-40-16) 

1613B 1.3 pg/L 5 pg/L 0.0000000135

Volatile Compounds 

002 Acrolein (107-02-8) 624 5 10 320/7805

003 Acrylonitrile (107-13-1) 624 1.0 2.0 0.059/0.665

004 Benzene (71-43-2) 624 1.0 2.0 5.08

047 Bromoform (75-25-2) 624 1.0 2.0 4.35

006 Carbon tetrachloride (108-90-7) 624/601 or SM6230B 1.0 2.0 0.255

007 Chlorobenzene (108-90-7) 624 1.0 2.0 6805

016 Chloroethane (75-00-3) 624/601 1.0 2.0 

019 2-Chloroethylvinyl Ether (110-75-8) 624 1.0 2.0 354010

023 Chloroform (67-66-3) 624 or SM6210B 1.0 2.0 5.75

051 Dibromochloromethane (124-48-1) 624 1.0 2.0 0.415

025 1,2-Dichlorobenzene (95-50-1) 624 1.9 7.6 27005

026 1,3-Dichlorobenzene (541-73-1) 624 1.9 7.6 4005

027 1,4-Dichlorobenzene (106-46-7) 624 4.4 17.6 4005

028 3,3’-Dichlorobenzidine (91-94-1) 605/625 0.5 1.0 

048 Dichlorobromomethane (75-27-4) 624 1.0 2.0 0.275

013 1,1-Dichloroethane (75-34-3) 624 1.0 2.0 

010 1,2-Dichloroethane (107-06-2) 624 1.0 2.0 0.385

029 1,1-Dichloroethylene (75-35-4) 624 1.0 2.0 0.0575

032 1,2-Dichloropropane (78-87-5) 624 1.0 2.0 311
Page 47 of 49 

Permit No. WA-002958-1 

EPA 

307(A) 

REF. # 

Pollutant & CAS No. 

(if available)

Recommended 

Analytical Protocol 

Detection 

(DL)1

(μg/L unless 

specified) 

Quantitation 

Level (QL) 2 

(μg/L unless 

specified)

Lowest 

Criteria 

Values 

(μg/L unless 

specified)

033 1,3-dichloropropylene (mixed isomers) 

(542-75-6) 

624 1.0 2.0 105

038 Ethylbenzene (100-41-4) 624 1.0 2.0 31005

046 Methyl bromide (74-83-9) 

(Bromomethane) 

624/601 5.0 10.0 485

045 Methyl chloride (74-87-3) 

(Chloromethane) 

624 1.0 2.0 27000010

044 Methylene chloride (75-09-2) 624 5.0 10.0 4.75

015 1,1,2,2-Tetrachloroethane (79-34-5) 624 1.9 2.0 0.175

085 Tetrachloroethylene (127-18-4) 624 1.0 2.0 0.805

086 Toulene (108-88-3) 624 1.0 2.0 68005

030 1,2-Trans-Dichloroethylene (156-60-5) 

(Ethylene dichloride) 

624 1.0 2.0 7004

011 1,1,1-Trichloroethane (71-55-6) 624 1.0 2.0 2008

014 1,1,2-Trichloroethane (79-00-5) 624 1.0 2.0 0.65

087 Trichloroethylene (79-01-6) 624 1.0 2.0 2.75

088 Vinyl chloride (75-01-4) 624/SM6200B 1.0 2.0 25

Acid Compounds 

024 2-Chlorophenol (95-57-8) 625 1.0 2.0 814

031 2,4-Dichlorophenol (120-83-2) 625 0.5 1.0 935

034 2,4-Dimethylphenol (105-67-9) 625 0.5 1.0 3804

060 4,6-dinitro-o-cresol (534-52-1) 

(2-methyl-4,6,-dinitrophenol) 

625/1625B 1.0 2.0 13.45

059 2,4 dinitrophenol (51-28-5) 625 1.0 2.0 705

057 2-Nitrophenol (88-75-5) 625 0.5 1.0 45013

058 4-nitrophenol (100-02-7) 625 0.5 1.0 60013

022 Parachlorometa cresol (59-50-7) 

(4-chloro-3-methylphenol) 

625 1.0 2.0 - 

064 Pentachlorophenol (87-86-5) 625 0.5 1.010 0.285

065 Phenol (108-95-2) 625 2.0 4.0 210005

021 2,4,6-Trichlorophenol (88-06-2) 625 2.0 4.0 2.15

Base/Neutral Compounds

001 Acenaphthene (83-32-9) 625 0.2 0.4 6706

077 Acenaphtylene (208-96-8) 625 0.3 0.6 1320009

078 Anthracene (120-12-7) 625 0.3 0.6 96005

005 Benzidine (92-87-5) 625 12 24 0.000125

067 Benzyl butyl phthalate (85-68-7) 625 0.3 0.6 1500 

072 Benzo(a)anthracene (56-55-3) 625 0.3 0.6 0.00285

PBT Benzo(j)fluoranthene (205-82-3) 625 0.5 1.0 - 

PBT Benzo(r,s,t)pentaphene (189-55-9) 625 0.5 1.0 

073 Benzo(a)pyrene (50-32-8) 610/625 0.5 1.0 0.0028/0.0315

074 3,4-benzofluoranthene 

(Benzo(b)fluoranthene) (205-99-2) 

610/625 0.8 1.6 

075 11,12-benzofluoranthene 

(Benzo(k)fluoranthene) (207-08-9) 

610/625 0.8 1.6 0.0028/0.0315

079 Benzo(ghi)Perylene (191-24-2) 610/625 0.5 1.0 0.19

043 Bis(2-chloroethoxy)methane (111-91-1) 625 5.3 21.2 920009

018 Bis(2-chloroethyl)ether (111-44-4) 611/625 0.3 1.0 0.0315

042 Bis(2-chloroisopropyl)ether (108-60-1) 625 0.3 0.6 14005

066 Bis(2-ethylhexyl)phthalate (117-81-7) 625 0.1 0.5 1.85
Page 48 of 49 

Permit No. WA-002958-1 

EPA 

307(A) 

REF. # 

Pollutant & CAS No. 

(if available)

Recommended 

Analytical Protocol 

Detection 

(DL)1

(μg/L unless 

specified) 

Quantitation 

Level (QL) 2 

(μg/L unless 

specified)

Lowest 

Criteria 

Values 

(μg/L unless 

specified)

041 4-Bromophenyl phenyl ether (101-55-3) 625 0.2 0.4 18010

020 2-Chloronaphthalene (91-58-7) 625 0.3 0.6 10006

040 4-Chlorophenyl phenyl ether (7005-72-3) 625 0.3 0.5 3659

076 Chrysene (218-01-9) 610/625 0.3 0.6 0.00285

PBT Dibenzo (a,j)acridine (224-42-0) 610M/625M 2.5 10.0 - 

PBT Dibenzo (a,h)acridine (226-36-8) 610M/625M 2.5 10.0 - 

082 Dibenzo(a-h)anthracene (53-70-3) 

(1,2,5,6-dibenzanthracene) 

625 0.8 1.6 27005

PBT Dibenzo(a,e)pyrene (192-65-4) 610M/625M 2.5 10.0 - 

PBT Dibenzo(a,h)pyrene (189-64-0) 625M 2.5 10.0 

028 3,3’-Dichlorobenzidine (91-94-1) 605/625 0.5 1.0 0.045

070 Diethyl phthalate (84-66-2) 625 1.9 7.6 230005

071 Dimethyl phthalate (131-11-3) 625 1.6 6.4 3130005

068 Di-n-butyl phthalate (84-74-2) 625 0.5 1.0 27005

035 2,4-dinitrotoluene (121-14-2) 609 0.2 0.4 0.115

036 2,6-dinitrotoluene (606-20-2) 609/625 0.2 0.4 625013

069 Di-n-octyl phthalate (117-84-0) 625 0.3 0.6 3.113

037 1,2-Diphenylhydrazine (as Azobenzene) 

(122-66-7) 

1625B 5.0 20 0.045

039 Fluoranthene (206-44-0) 625 0.3 0.6 3005

080 Fluorene (86-73-7) 625 0.3 0.6 13005

009 Hexachlorobenzene (118-74-1) 612/625 0.3 0.6 0.000755

052 Hexachlorobutadiene (87-68-3) 625 0.5 1.0 0.445

053 Hexachlorocyclopentadiene (77-47-4) 1625B/625 0.5 1.0 2405

012 Hexachloroethane (67-72-1) 625 0.5 1.0 1.95

083 Indeno(1,2,3-cd)Pyrene (193-39-5) 610/625 0.5 1.0 0.00286

054 Isophorone (78-59-1) 625 0.5 1.0 8.45

PBT 3-Methyl cholanthrene (56-49-5) 625 2.0 8.0 _ 

055 Naphthalene (91-20-3) 625 0.3 0.6 40011

056 Nitrobenzene (98-95-3) 625 0.5 1.0 175

061 N-Nitrosodimethylamine (62-75-9) 607/625 2.0 4.0 0.000695

063 N-Nitrosodi-n-propylamine (621-64-7) 607/625 0.5 1.0 0.0055

062 N-Nitrosodiphenylamine (86-30-6) 625 0.5 1.0 55

PBT Perylene (198-55-0) 625 1.9 7.6 

081 Phenanthrene (85-01-8) 625 0.3 0.6 411

084 Pyrene (129-00-0) 625 0.3 0.6 9605

008 1,2,4-Trichlorobenzene (120-82-1) 625 0.3 0.6 356

 Pesticides/PCBs 

089 Aldrin (309-00-2) 608 0.025 0.05 0.000135

102 alpha-BHC (319-84-6) 608 0.025 0.05 0.00395

103 beta-BHC (319-85-7) 608 0.025 0.05 0.0145

104 gamma-BHC (58-89-9) 608 0.025 0.05 0.0195

105 delta-BHC (319-86-8) 608 0.025 0.05 7.013

091 Chlordane (57-74-9) 608 0.013 0.25 0.000575

092 4,4’-DDT (50-29-3) 608 0.025 0.05 0.000595

093 4,4’-DDE (72-55-9) 608 0.025 0.0510 0.000595

094 4,4’ DDD (72-54-8) 608 0.025 0.05 0.000835

090 Dieldrin (60-57-1) 608 0.025 0.05 0.000145

095 alpha-Endosulfan (959-98-8) 608 0.025 0.05 0.00875

096 beta-Endosulfan (33213-65-9) 608 0.025 0.05 0.00875
Page 49 of 49 

Permit No. WA-002958-1 

EPA 

307(A) 

REF. # 

Pollutant & CAS No. 

(if available)

Recommended 

Analytical Protocol 

Detection 

(DL)1

(μg/L unless 

specified) 

Quantitation 

Level (QL) 2 

(μg/L unless 

specified)

Lowest 

Criteria 

Values 

(μg/L unless 

specified)

097 Endosulfan Sulfate (1031-07-8) 608 0.025 0.05 0.0935

098 Endrin (72-20-8) 608 0.025 0.05 0.00235

099 Endrin Aldehyde (7421-93-4) 608 0.025 0.05 0.765

100 Heptachlor (76-44-8) 608 0.025 0.05 0.000215

101 Heptachlor Epoxide (1024-57-3) 608 0.025 0.05 0.000105

106 PCB-1242 (53469-21-9) 608 0.25 0.5 0.0001705

107 PCB-1254 (11097-69-1) 608 0.25 0.5 0.0001705

108 PCB-1221 (11104-28-2) 608 0.25 0.5 0.0001705

109 PCB-1232 (11141-16-5) 608 0.25 0.5 0.0001705

110 PCB-1248 (12672-29-6) 608 0.25 0.5 0.0001705

111 PCB-1260 (11096-82-5) 608 0.13 0.5 10.513

112 PCB-1016 (12674-11-2) 608 0.13 0.5 0.4213

113 Toxaphene (8001-35-2) 608 0.24 0.5 0.000735

PBT - Denotes a State of Washington priority pollutant. 

1. Detection level (DL) or detection limit means the minimum concentration of an analyte (substance) that can be 

measured and reported with a 99% confidence that the analyte concentration is greater than zero as determined by the 

procedure given in 40 CFR Part 136, Appendix B. 

2. Quantitation Level (QL) is equivalent to EPA’s Minimum Level (ML) which is defined in 40 CFR Part 136 as the 

minimum level at which the entire GC/MS system must give recognizable mass spectra (background corrected) and 

acceptable calibration points. These levels were published as proposed in the Federal Register on March 28, 1997. 

3. This criterion is dependent upon receiving water characteristics. This value is the aquatic life chronic value at a 

hardness of 25 mg/l. 

4. EPA 822-R-03-031. 

5. Human health criteria as fresh or marine – EPA National Toxic Rule. 

6. Fresh water aquatic life as acute or chronic – EPA recommended values. 

7. Aquatic life as acute or chronic – WAC 173-201A. 

8. USEPA Drinking Water Criteria. 

9. No human health-based screening levels were available for 2-chloroethylvinyl ether. This value is the surface water 

screening values derived by U.S. EPA Region 4 Water Management Division. These values were obtained from 

water quality criteria documents and represent the chronic ambient water quality criteria values for the protection of 

aquatic life. 

10. USGS 2004-5194. Pesticides Detected in Urban Streams in King County, Washington, 1998–2003. 

11. Estimated effect level. 

12. Chapter WAC 173-200. 

13. Estimated effect level.