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 DISCHA RGE ELIMINATION SYSTEM WASTE DISCHARGE PERM IT No. WA-002958-1

State of Washington DEPARTMENT OF ECOLOGY Northwest Regional Office 3190 160 th Avenue SE Bellevue, WA 98008-5452
In compliance with the provisions of The State of Washington Water Pollution Control Law Chapter 90.48 Revised C ode 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 EcologyPage 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 Wastewat er Treatment Plant Outfall No. 001 B. Monitoring Schedule – Green River Outfall No. 002 C. Sampling and Analytical Procedures D. Flow Measurement, Field Measuremen t, and Continuous Monitoring Devices E. Laboratory Accreditation

S3. REPORTING AND RECORD ING 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 ManualPage 3 of 49 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 .............................................................................................42Page 4 of 49 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 VIOLATI NG 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 CHARACTERIZA TION FOR POLLUTANTS.....................45Page 5 of 49 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 Re port 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 A ltered 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 Repor t 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/

p ermit c y cle S13 Outfall Evaluation 1/permit cycle September 30, 2012 S13 Outfall Repair Plan If required, 1/

p ermit c y cle If required, Se p tember 30, 2013 S14.A Acute Toxicity Effl uent Test Results With Permit Renewal Application 2/permit cycle Testing to occur: 3 rd Quarter 2012 1 st 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: 4 th Quarter 2012 1 st

Quarter 2013 September 30, 2013

S15.B Chronic Toxicity Summary Re port 1/permit cycle September 30, 2013 S17 Nitrogen Reduction Study If required, 1/

p ermit c y cle If required, June 30, 2013 G1.C Notice of Change in Authorization As necessary G4 Reporting Planned Changes As necessaryPage 6 of 49 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 necessaryPage 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 th is 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 leve l 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 pe rmit 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-da y) 30 mg/L, 36,000 lbs/day 85% removal of influent BOD 5 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 dail y maximum is less than or e q ual to 9.0.
Paramete r A vera g e Monthl y a Maximum Dail y e
Total Residual Chlorine 0.5 m g /L 0.75 m g /L

a Average monthly effluent limit means the highest allow able 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 “da ily discharges” measured during a calendar week divided by the number of “daily disc harges” 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 Pe rmittee must report the instantaneous maximum and minimum pH monthly. Do not average pH values.

e Maximum daily effluent limit means the highest allo wable daily discharge. The daily discharge means the discharge of a pollutant measured during a ca lendar day. The daily discharge is the average measurement of the pollutant over the day. This does not apply to pH.Page 8 of 49 Permit No. WA-002958-1

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

Beginning on the effective date of this pe rmit 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 th e Department of Ecology at least five (5) working days in advance of the discha rging 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, e quivalent to 18 MGD).

5. The Permittee may only discharge when th e Green River flow is greater than 1000 cfs to ensure adequate dilution of the effluent.

6. The Permittee must treat any maintenan ce discharges to the Green River using secondary treatment, disinf ection, 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 qua lity at least 300 feet downstream of the diffuser at the time of the discharge fo r ammonia, TSS, and heavy metals as detailed in S2.B(2).

10. Any discharge from the treatment plant that results in water qua lity 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).Page 9 of 49 Permit No. WA-002958-1

C. Mixing Zone Authorization

The following paragraphs define the ma ximum boundaries of the mixing zones:

Mixing Zone Descriptions – Outfall No. 001

Chronic Mixing Zone

WAC 173-201A-400(7)(b)(i) specifies mixing z ones must not extend in any horizontal direction from the discharge ports for a distan ce 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 ther efore 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 estuar ine 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 inde pendently 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 re quirements 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.Page 10 of 49 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 w ith the following schedule and must use the laboratory method, detecti on level (DL), and quantitati on level (QL) specified in Appendix A or corresponding Sampling Analysis Plan/Quality Assurance Project Plan (SAP/QAPP) documents. Alternative met hods from 40 CFR Part 136 are acceptable if the DL and QL are equivalent to thos e specified in Appendix A, corresponding SAP/QAPP documents, or sufficient to produce a measurable quantity.

Parameter a Units Minimum Sampling Fre q uenc y Sample Type

(1) Wastewater Influent Wastewater Influent means the raw sewage flow. Sample the wastewater entering the influent distribution channel of the treatment plant.
BOD 5 mg/L 4 times per week b 24-hour composite c
BOD 5 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 ex iting, or has exited, the last treatment process or operation. Typically, this is after or at the exit from the chlorine co ntact chamber or other disinfection process. The Permittee may take effluent samples fo r the BOD5 analysis before or after the disinfection process. If taken after, dechlorinate and reseed the sample.
Flow MGD Continuous d Measurement
BOD 5 mg/L 4 times per week b 24-hour composite c
BOD 5 lbs/day 4 times per week b Calculation e
BOD 5 % 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 MeasurementPage 11 of 49 Permit No. WA-002958-1

Parameter a Units Minimum Sampling Fre q uenc y 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 (PO 4 ) mg/L P Monthly f 24-hour composite c

Nitrate-Nitrite Nitr ogen 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 Testi ng – 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 Requireme nts – 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 te sting with the discharge monitoring report. (7) Receiving Water Characterization As specified in Permit Condition S11. (8) Sediment Study As specified in Permit Condition S12.Page 12 of 49 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 agen cy-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-hal f 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 maintena nce. 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 T SS 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 after noon. If temperature is measured continuously, the Permittee must determine and report a daily maxi mum 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 t he average of the values. Continuous monitoring instruments must achieve an accu racy of 0.2 degrees C, and the Pe rmittee must verify accuracy annually.

B. Monitoring Schedule – Green River Outfall No. 002

The Permittee must monitor in accordance w ith the following schedule and must use the laboratory method, detecti on level (DL), and quantitati on level (QL) specified in Appendix A or corresponding Sampling Analysis Plan/Quality Assurance Project Plan (SAP/QAPP) documents. Alternative met hods from 40 CFR Part 136 are acceptable if the DL and QL are equivalent to thos e specified in Appendix A, corresponding SAP/QAPP documents, or sufficient to produce a measurable quantity.Page 13 of 49 Permit No. WA-002958-1

Parameter a Units Minimum Sampling Fre q uenc y Sample Type

(1) Wastewater Final Effluent
Final Wastewater Effluent means wastewater which is ex iting, or has exited, the last treatment process or operation. Typically, this is after or at the exit from the chlorine co ntact chamber or other disinfection process. Volume MG Once per event Measurement/Calculation Duration Hours Once per event Measurement
BOD 5 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 agen cy-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-hal f 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 disc harge or discharge condition, including bypasses, upsets, and maintenan ce-related conditions that ma y affect effluent quality.

Sampling and analytical methods used to m eet 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 Measurem ent, and Continuous Monitoring Devices

The Permittee must:

1. Select and use appropriate flow measurem ent, field measurement, and continuous monitoring devices and methods consiste nt with accepted scientific practices.

2. Install, calibrate, and maintain these de vices to ensure the accuracy of the measurements is consistent with th e accepted industry standard and the manufacturer’s recommendation for that type of device.

3. Use field measurement devices as direct ed by the manufactur er and do not use reagents beyond thei r expiration dates.

4. Maintain calibration records for at least three years.

E. Laboratory Accreditation

The Permittee must ensure that all monitori ng 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 pro cess control parameters are exem pt 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 whethe r or not the facility was di scharging. 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 20 th day of the month following the comp leted 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 160 th Avenue SE Bellevue, WA 98008-5452

All laboratory reports providi ng 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 li mit (MDL), laboratory practical quantitation limit (PQL), reporting units, and concentration de tected. Analytical results from samples sent to a contract laboratory must incl ude information on the chain of custody, the analytical method, QA/QC results, and documen tation of accreditation for the parameter.

B. Records Retention

The Permittee must retain records of all mon itoring information for a minimum of three (3) years. Such information must include all calib ration and maintenance re cords and all original recordings for continuous monitoring instrument ation, copies of all re ports 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 a ny unresolved litigation regarding the discharg e 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.Page 16 of 49 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 noncomplian ce 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 Departme nt 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 syst em overflows discharg ing to a waterbody used as a source of drinking water immediately to the Department of Ecology and the Department of Health, Drinking Water Pr ogram 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 followi ng occurrences of noncompliance by telephone, to Ecology at the telephone num bers 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 limitati on 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 Secti on 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 s ubmission within five days of the time that the Permittee becomes aware of a ny event required to be reported under subparts 1 or 2, above. The writt en 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 expe cted to continue if it has not been corrected.

d. Steps taken or planned to reduce, el iminate, and prevent recurrence of the noncompliance.

e. If the noncompliance involves an overfl ow prior to the tr eatment works, an estimate of the quantity (in ga llons) 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 time ly 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 viola tions, which do not require immediate or within 24 hours reporting, when it su bmits monitoring reports for S3.A ("Reporting"). The reports must contain the information listed in paragraph E.3, above. Compliance with these requireme nts does not relieve the Permittee from responsibility to maintain continuous comp liance 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/sp ills/other/repor taspill.htm

.
Where the Permittee becomes aware that it fa iled to submit any relevant facts in a permit application, or submitted incorrect info rmation in a permit a pplication, 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 discha rges, resulting from the activities listed below, which may result in permit violati ons. These activities include any facility expansions, production increas es, 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
BOD 5 Influent Loading for Maximum Month 251,000 lbs/day TSS Influent Loading for Maximum Month 235,000 lbs/dayPage 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 lo ad reaches 85 percen t of any one of the design criteria in S4.A for three consecutive months.

2. The projected increase would reach de sign capacity within five years.

The plan and schedule for continuing to maintain capacity must be sufficient to achieve the effluent limits and other conditi ons 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, includ ing the introduction of any process modifications that would establish the abil ity of the existing f acility to achieve the effluent limits and other requirements of this permit at specific levels in excess of the existing de sign criteria specified in paragraph A, above.

b. Reduction or elimination of excessi ve 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 th e plan must meet the requirements of WAC 173-240-060, "Engineering Report," a nd be approved by Ecology prior to any construction.

If the Permittee intends to apply for stat e 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 e ffectiveness as required by WAC 173-95-730. The plan must specify any contracts, or dinances, 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 a ffecting 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 antici pated impact on the Permittee’s effluent [40 CFR 122.42(b)].

E. Infiltration and Inflow Progress Report

1. The Permittee shall submit a biennial Infi ltration 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 Octobe r 1, 2011, and every two (2) years thereafter.

F. Wasteload Assessment

1. The Permittee must conduct an annual assessm ent 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 compar ison between the existi ng 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 populat ion or population equivalent, projected population growth ra te, and the estimated date upon which the design capacity is projected to be reached, acco rding 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. Pr oper operation and maintenance also includes keeping a daily operation logbook (paper or el ectronic), adequate la boratory controls, and appropriate quality assurance pr ocedures. This provision of th e permit requires the Permittee to operate backup or auxiliary facil ities 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 th e 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 fo r 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 Ma intenance (O&M) Progr am for the entire sewage system.

2. Keep maintenance records on all major elect rical and mechanical components of the treatment plant, as well as the sewage sy stem and pumping stations. Such records must clearly specify the frequency and type of maintenance recommended by the manufacturer and must show the frequenc y and type of mainte nance performed.

3. Make maintenance records availabl e for inspection at all times.

C. Short-term Reduction

The Permittee must schedule any facility mainte nance, which might re quire interruption of wastewater treatment and degrade effluent qua lity, during noncritical water quality periods and carry this maintenance out in a manner approved by Ecology.

If a Permittee contemplates a reduction in the le vel of treatment that would cause a violation of permit discharge limits on a short-term basi s for any reason, and such reduction cannot be avoided, the Permittee must:

1. Give written notification to Ecol ogy, 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 re lieve the Permittee of its obl igations under this permit.Page 22 of 49 Permit No. WA-002958-1

D. Electrical Power Failure

The Permittee must ensure that adequate safe guards prevent the di scharge of untreated wastes or wastes not treated in accordance with the requirements of this permit during electrical power failure at th e treatment plant and/or sewa ge lift stations. Adequate safeguards include, but are not limited to, altern ate power sources, standby generator(s), or retention of inadequately treated wastes.

The Permittee must maintain Reliability Cla ss II (EPA 430/9-74-001) at the wastewater treatment plant. Reliability Class II require s 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 inte ntional 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 ci rcumstances (1, 2, or 3) applies.

1. Bypass for essential maintenance without th e 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, a nd results in noncompliance of this permit.

This bypass is permitted only if:

a. Bypass is unavoidable to prev ent loss of life, personal injury, or severe property damage. “Severe property damage” means substantial physical damage to property, damage to the treatment facilities which w ould 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 instal led adequate backup equipment in the exercise of reasonable engineering judgme nt to prevent a bypass.

• Transport of untreated wastes to anot her 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 no ncompliance 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 altern atives, 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 planne d 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 pr ocess as possible. The Permittee must consider the analysis required above dur ing preparation of the engineering report or facilities plan and plans and specificati ons 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 anal yze 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 perfor m construction or maintenance-related activities essential to meet the requirements of this permit.

• If feasible alternatives to bypass ex ist, 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 an other treatment facility.

• If the Permittee planned and schedul ed the bypass to minimize adverse effects on the public and the environment.

After consideration of the above and the adverse effect s 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 a pprove 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 Maintenan ce (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 pr ocedures 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 th at 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 allo wable discharge rate for draining a tank, blocking all floor drains be fore beginning the overhaul of a stationary engine).

4. The treatment plant process control monitoring schedule.

5. Minimum staffing adequate to operate a nd maintain the treatment processes and carry out compliance monito ring 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 approve d pretreatment program submittal entitled "Industrial Pretreatment Program" and da ted April 27, 1981; any approved revisions thereto; and the General Pretreatment Re gulations (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 standa rds under Section 307(b ) and (c) of the Federal Clean Water Act (hereinafter, the Ac t), 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 modificat ion of a local industrial waste discharge permit. Locally-derived limits are define d as pretreatment standards under Section 307(d) of the Act and are not limited to categorical indus trial facilities.

b. Issue industrial waste discharge permits to all significant industri al users [SIUs, as defined in 40 CFR 403.3(t)(i )(ii)] contributing to the treatment system, including those from other jurisdictions . Industrial waste discharg e 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 Ec ology 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 industr ial users to the POTW. The Permittee must maintain records for at least a thr ee-year period.

d. Perform inspections, surveillance, and mon itoring activities on industrial users to determine or confirm compliance with pret reatment standards and requirements. The Permittee must conduct a thorough insp ection of SIUs annually, except that Middle Tier Categorical Industr ial Users as defined by 40 CFR 403.8(f)(2)(v)(B)&(C) need only be inspected once ev ery two years. The Permittee must conduct regular loca l monitoring of SIU wastewaters commensurate with the character and volum e of the wastewater but not less than once per year, except for Middle-Tier Cate gorical Industrial Users which may be sampled once every two years. The Perm ittee 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 nonco mpliance by any industrial users with applicable pretreatment standards and re quirements. Once violations have been identified, the Permittee must take timel y and appropriate enforcement action to address the noncompliance. The Permitt ee'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 newspa per of general circulation that provides meaningful public notice within the Pe rmittee's service area, a list of all nondomestic users which, at any time in the previous 12 months, were in significant noncompliance as defi ned in 40 CFR 403.8(f)(2)(viii).

g. If the Permittee elects to conduct sampli ng of an SIU's discharge in lieu of requiring user self-monitoring, it must sa tisfy 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 re quire 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 oblig ations to report any sampling they do, to respond to noncompliance, and to submit ot her 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 samp ling for the SIU, the Permittee must not sample less than once in every six-m onth period unless the Permittee's approved program includes procedures for reduc tion 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, i ndustrial 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 co mpliance 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-th rough, or in any other way re sult in violations of the Permittee’s regulations, local limits, or pe rmit 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 wa ste 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, EcologyPage 27 of 49 Permit No. WA-002958-1

will notify the Permittee of this determin ation. 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 a nnual report that briefly describes its program activities during the previous calendar year.

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

Water Quality Permit Coordinator Department of Ecology Northwest Regional Office 3190 160 th Avenue SE Bellevue, WA 98008-5452

The report must include the following information:

a. An updated listing of nondomes tic 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 interf erence, pass-through of pollu tants 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 vi olations experienced at the POTW that are directly attributable to wastes from industrial users.

iii. Listing of industrial user s 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 user s 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 fa iled to submit baseline monitoring reports or any other reports re quired 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, stat e, or local pretreatment standards or with applicable compliance sche dules for achieving those standards, and the duration of such noncompliance.

iii. Summary of enforcement activities a nd other corrective actions taken or planned against noncomplying industri al 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 Appe ndix D of 40 CFR Part 122 as amended, any compounds identified as a result of Conditi on S6.B.4, and any other pollutants expected from nondomestic sources using U.S. EP A-approved procedures for collection, preservation, storage, and analysis. The Perm ittee 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 te rm of this permit. The Permittee must test influent, effluent, and sludge samples for the organic priority pollutants (T able 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 mu st be collected using grab sampling techniques at equal intervals for a to tal of four grab samples per day.

The laboratory may run a single analys is 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 pres ent in all phases, whether so lid, 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 proce dures approved by 40 CFR 136.

2. The Permittee must collect a sludge sample c oncurrently with a wastewater sample as a single grab sample of resi dual sludge. Sampling and analysis must be performed using procedures approved by 40 CFR 136 unl ess the Permittee requests an alternate method and Ecology has approved.

3. The Permittee must take cyanide, phenols, a nd oils as grab samples. Oils must be hexane soluble or equivalent, and should be measured in th e 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 identif y 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 chromat ograms). 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 μ g/l, and must be adjusted downward if higher inte rnal 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 an alyst. For all detected substances which are determined to be pollutants, the Pe rmittee must conduct additional sampling and appropriate testing to determine concentrati on and variability, and to evaluate trends.

C. Reporting of Monitoring Results

The Permittee must include a summary of mon itoring 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 CF R 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. Ecolog y 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 lim its for pollutants of concern. Any permit modification is subject to formal due pro cess procedures under state and federal law and regulation.

E. Source Tracking Characterization

In order to more fully characterize indus trial discharges to the South WWTP, the Permittee must conduct a pollutant analysis for metals, cyanide, phenols, volatile compounds, acid compounds, and base/neu tral compounds, as described in Appendix A, of at least one industry in each of the metal-finishing/electroplating, centralized waste treatment, plastic pr oducts, 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 en try into state ground or surface waters. The Permittee shall not discharge leachate from re sidual 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 engi neering reports, facility plans, or plans and specifications are developed during this perm it cycle for the South WWTP, the following elements apply.

A. The Permittee must prepare and submit two copi es of an approvable engineering report or facility plan in accordance with Chap ter 173-240 WAC to Ecology for review and approval.

B. The report must contain any appropri ate requirements as described in Water Reclamation and Reuse Standards (Washington State Depa rtment 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 cons truction, 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 existi ng 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 ot her materials used a nd/or stored on-site, which when spilled, or otherwise released into the environment, designate as dangerous waste (DW) or extremely hazar dous waste (EHW) by the procedures set forth in WAC 173-303-070. Include other materi als used and/or stored on-site which may become pollutants or cause po llution upon reaching state's waters.

2. A description of preventive measures and facilities (including an overall facility plot showing drainage patterns) which prev ent, contain, or treat spills of these materials.

3. A description of the reporting system th e Permittee will use to alert responsible managers and legal authorities in the event of a spill.

4. A description of operator trai ning 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 ot her 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, Ec ology will use this information to calculate effluent limits. Field sampling will be require d 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.Page 32 of 49 Permit No. WA-002958-1

2. Conduct all sampling and analysis in acco rdance 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/QAP Ptool/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 pos sible to the critical period.

6. Follow the clean sampling techniques ( Method 1669: Samplin g 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, temper ature, pH, fecal coliform bacteria, and salinity.

8. In addition, analyze the samples for both th e 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 met hods 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 al so 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 an alyze sediments in th e 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 monito ring by October 1, 2010. The purpose of the plan is to characterize sedi ment quality (i.e. the nature and extent of any possible chemical contamination and biological toxi city) in the vicinity of the Permittee’s discharge locations. The Permittee must follow the guidance provided in the Sediment Source Control Standards User Manual, Appendi x B: Sediment Sampling and Analysis Plan (Ecology, 2008).Page 33 of 49 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 1 st and September 30 th . The Permittee must submit to Ecology a Sediment Data Report containing th e 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 investigat e the source of sediment toxic ity. This testing may include, but is not limited to, toxicity identificati on procedures, characterization of the whole effluent, and particulate matter in the efflue nt. 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 result s 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 conti nued 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 conclude s 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 pl an to address the necessary repairs.

S14. ACUTE TOXICITY

A. Acute Toxicity Testing

The Permittee must:

1. Conduct acute toxicity testing on final effl uent 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 c oncentration (ACEC), 100% effluent, and aPage 34 of 49 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 pr otocols 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 to xicant 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 bu t no later than 36 hour s 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 m eet quality assurance criteria and test conditions specified in the most recent versions of the EP A methods listed in Subsection C and the Department of Ecology P ublication 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 a nd 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 t oxicity testing just prior to the chlorination step in the treatment process.Page 35 of 49 Permit No. WA-002958-1

7. The Permittee may choose to conduct a fu ll dilution series test during compliance testing in order to determine dose response. In this case, the series must have a minimum of five effluent concentrati ons and a control. The series of concentrations must include the acute cri tical 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 tes ting 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 e ffluent during the f ourth quarter of 2012 and the first quarter of 2013.

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

3. Conduct chronic toxicity test ing on a series of at leas t five concentrations of effluent and a control. This series of dilutions must include the acute critical effluent concentration (ACEC). Th e ACEC equals 0.54% effluent.

4. Compare the ACEC to the control usi ng 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-02-014Page 36 of 49 Permit No. WA-002958-1

B. Sampling and Reporting Requirements

1. The Permittee must submit all reports for t oxicity 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 t oxicant results for test methods . If the lab provides the toxicity test data in elec tronic 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 comp letion. The lab must begin the toxicity testing as soon as possible but no later th an 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 crit eria 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 te st results to be invalid or anomalous, the Permittee must repeat the testing with freshly-collected effluent.

5. The laboratory must use control water a nd 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 t oxicity testing just prior to the chlorination step in the treatment process.

7. The Permittee may choose to conduct a fu ll dilution series test during compliance testing in order to determine dose response. In this case, the series must have a minimum of five effluent con centrations and a control. Th e 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 i nvolve hypothesis testin g 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 standar d, 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) da ys after each test completion.Page 37 of 49 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 facili ty 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 sign ed 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 us ers during instance s of noncompliance

.
No other uses of ETS effluent ar e 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 St udy, 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 di scharge from King County’s South WWTP is significantly and quantifiably impacting dissolv ed oxygen levels in South Puget Sound. If Ecology concludes that there is a significant and quantifiable a dverse 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 eval uate 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.Page 38 of 49 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 re sponsible corporate officer means:

(i) A president, secretary, treasurer, or vice-president of the corporation in charge of a principal business function, or an y other person who performs similar policy or decision making functi ons for the corporation, or

(ii) The manager of one or more manuf acturing, production, or operating facilities, provided, the manager is authorized to make management decisions which govern the operation of the regulated fac ility including having the explicit or implicit duty of making major capital investment recommendations, and initiating and directing other comprehe nsive measures to assure long-term environmental compliance with environmen tal 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 partne rship, 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 ra nking elected official.

Applications for permits for domestic wastew ater facilities that are either owned or operated by, or under contract to, a public en tity shall be submitted by the public entity.

B. All reports required by this permit and ot her information requested by Ecology must be signed by a person described above or by a dul y authorized representative of that person. A person is a duly auth orized 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 equivale nt responsibility, or an individual or position having overall respons ibility for environmental matters. (A duly authorized representative may thus be e ither a named individua l or any individual occupying a named position.)

C. Changes to authorization. If an authorization under pa ragraph B.2, above, is no longer accurate because a different individual or position has responsibility for the overall operation of the facility, a new authorizati on 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 si gned by an authorized representative.

D. Certification. Any person signing a docum ent 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 supe rvision in accordance with a system designed to assure that qualified pe rsonnel 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 informati on, including the possibility of fine and imprisonment for knowing violations.”

G2. RIGHT OF INSPECTION AND ENTRY

The Permittee must allow an authorized repr esentative of Ecology, upon the presentation of credentials and such other documen ts 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 term s and conditions of this permit.

C. To inspect, at reasonable times, any fac ilities, equipment (inc luding monitoring and control equipment), practices, methods, or ope rations 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.Page 40 of 49 Permit No. WA-002958-1

G3. PERMIT ACTIONS

This permit may be modified, revoked and reissue d, 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 reissue d, 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 fa ilure 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 quali ty standards violations and can only be regulated to acceptable levels by pe rmit modification or termination.

5. A change in any condition that requires either a tem porary 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 re quired 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 conditi on of the waters of the state.

2. New information not available at the tim e of permit issuance that would have justified the application of different permit conditions.

3. Material and substantial alterations or additions to the perm itted facility or activities which occurred after this permit issuance.

4. Promulgation of new or amended standards or regulations havi ng a direct bearing upon permit conditions, or requiring permit revision.

5. The Permittee has requested a modificati on based on other rationale meeting the criteria of 40 CFR Part 122.62.

6. Ecology has determined that good cause ex ists 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 pretr eatment 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 r easons listed in A1 through A7 of this section, and Ecology determines that modifi cation 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 alte rations or additions to the permitted facility, production increases, or pr ocess 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 th e Permittee’s sludge use or dispos al practices. Following such notice, and the submittal of a new applicati on 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 CF R 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 modify ing any wastewater control faci lities, an engineering report and detailed plans and specifications must be submitted to Ecology for approval in accordance with Chapter 173-240 WAC. Engin eering 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 loca l statutes, ordinan ces, or regulations.

G7. TRANSFER OF THIS PERMIT

In the event of any change in control or owne rship 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 perm it responsibility, cove rage, 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 reissu e this permit. A modification under this subparagraph may also be minor modifi cation under 40 CFR 122.63. If this notice is not received, the transfer is effect ive on the date specified in the written agreement.

G8. REDUCED PRODUCTI ON FOR COMPLIANCE

The Permittee, in order to maintain complia nce with its permit, must control production and/or all discharges upon reduction, loss, fa ilure, or bypass of the tr eatment facility until the facility is restored or an alternative me thod 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 wastewater s must not be resuspende d 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 complia nce with this permit. The Permittee must also submit to Ecology upon request, copies of records required to be kept by this permit.Page 43 of 49 Permit No. WA-002958-1

G11. OTHER REQUIREMENTS OF 40 CFR

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

G12. ADDITIONAL MONITORING

Ecology may establish specific monitoring require ments in addition to those contained in this permit by Administrative Or der or permit modification.

G13. PAYMENT OF FEES

The Permittee must submit payment of fees a ssociated 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 condition s 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 ev ery such violation. Each an d 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 inci dent 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, imprope rly 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 affirm ative defense of upset must demonstrate, through properly signed, contemporaneous operati ng logs, or other releva nt evidence that: 1) an upset occurred and that the Permitt ee can identify the cause(s) of the upset; 2) the permitted facility was being prope rly operated at the time of the upset; 3) the Permittee submitted notice of the ups et as required in Condition S3.E; and 4) the Permittee complied with any remedial m easures 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 right s 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 Ac t 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 sta ndards or prohibitions es tablished under Section 307(a) of the Clean Water Act for toxic pol lutants 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 th at any person who falsifies, tampers with, or knowingly renders inaccurate any monitoring device or me thod required to be ma intained under this permit must, upon conviction, be punished by a fi ne of not more than $10,000 per violation, or by imprisonment for not more than two (2) ye ars 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) da ys 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 pe rmit. The review is to ensure consistency with Chapters 90.46 and 90.48 RCW. In the even t 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 u sed 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 monitori ng reports and to measure effluent concen trations near or below criteria values where possible at a reasonable cost. If an applicant or Perm ittee knows that an alternate, less sensitive method (higher DL and QL) from 40 CFR Part 136 is sufficient to produce measurabl e 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) SM 4500-NO3- E/F/H 100 10,000 Nitrogen, Total Kjeldahl (as N) SM4500-NH3- C/E/FG/SM4500-Norg-B 300

Ortho-Phosphate (PO 4 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 SO 4 ) SM4110-B 200 Sulfide (as mg/L S) SM4500-S 2 F/D/E/G 200 2.0 Sulfite (as mg/L SO 3 ) SM4500-SO3B 2000 Surfactants SM5540 C 50 Total dissolved solids SM2540 C 20 mg/L 500 mg/L 12Page 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 CaCO 3 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 14 5 115 Arsenic, Total (7440-38-2) 200.8 0.1 0.5 36 7 117 Beryllium, Total (7440-41-7) 200.8 0.1 0.5 4 8 118 Cadmium, Total (7440-4 3-9) 200.8 0.05 0.25 0.37 3 119 Chromium, Total (7440-47-3) 200.8 0.2 1.0 57.2 3 120 Copper, Total (7440-50-8) 200.8 0.4 2.0 3.1 3 122 Lead, Total (7439-92-1) 200.8 0.1 0.5 0.54 3 123 Mercury, Total (7439-97-6) 1631E 0.0002 0.0005 0.012 7 124 Nickel, Total (7440-02-0) 200.8 0.1 0.5 8.2 3 125 Selenium, Total (7782-49-2) 200.8 1.0 1.0 5 7 126 Silver, Total (7440-22-4) 200.8 0.04 0.2 0.32 3 127 Thallium, Total (7440-28-0) 200.8 0.09 0.36 1.7 5 128 Zinc, Total (7440-66-6) 200.8 0.5 2.5 32.3 3 Cyanide, Weak Acid Dissociable SM4500-CN-I,E 5 10 065 Phenols, Total EPA 420.1 50 21000 5
Dioxin 129 2,3,7,8-Tetra-Chlorodibenzo-P-Dioxin (176-40-16) 1613B 1.3 pg/L 5 pg/L 0.000000013 5

Volatile Compounds 002 Acrolein (107-02-8) 624 5 10 320/780 5 003 Acrylonitrile (107-13 -1) 624 1.0 2.0 0.059/0.66 5 004 Benzene (71-43-2) 624 1.0 2.0 5.0 8 047 Bromoform (75-25-2) 624 1.0 2.0 4.3 5 006 Carbon tetrachloride (108-90-7) 624/601 or SM6230B 1.0 2.0 0.25 5 007 Chlorobenzene (108-90-7) 624 1.0 2.0 680 5 016 Chloroethane (75- 00-3) 624/601 1.0 2.0 019 2-Chloroethylvinyl Ether (110-75-8) 624 1.0 2.0 3540 10 023 Chloroform (67-66-3) 624 or SM6210B 1.0 2.0 5.7 5 051 Dibromochloromethane (124-48-1) 624 1.0 2.0 0.41 5 025 1,2-Dichlorobenzene (95-50-1) 624 1.9 7.6 2700 5 026 1,3-Dichlorobenzene (541-73-1) 624 1.9 7.6 400 5 027 1,4-Dichlorobenzene (106-46-7) 624 4.4 17.6 400 5 028 3,3’-Dichlorobenzidine (91-94-1) 605/625 0.5 1.0 048 Dichlorobromomethane (75-27-4) 624 1.0 2.0 0.27 5 013 1,1-Dichloroethane (7 5-34-3) 624 1.0 2.0 010 1,2-Dichloroethane (107-06-2) 624 1.0 2.0 0.38 5 029 1,1-Dichloroethylene (75-35-4) 624 1.0 2.0 0.057 5 032 1,2-Dichloropropane (78-87-5) 624 1.0 2.0 3 11Page 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 10 5

038 Ethylbenzene (100-41-4) 624 1.0 2.0 3100 5 046 Methyl bromide (74-83-9) (Bromomethane) 624/601 5.0 10.0 48 5

045 Methyl chloride (74-87-3) (Chloromethane) 624 1.0 2.0 270000 10

044 Methylene chloride (75-09-2) 624 5.0 10.0 4.7 5 015 1,1,2,2-Tetrachloroethane (79-34-5) 624 1.9 2.0 0.17 5 085 Tetrachloroethylene (127-18-4) 624 1.0 2.0 0.80 5 086 Toulene (108-88-3) 624 1.0 2.0 6800 5 030 1,2-Trans-Dichloroethylene (156-60-5) (Ethylene dichloride) 624 1.0 2.0 700 4

011 1,1,1-Trichloroethane (71-55-6) 624 1.0 2.0 200 8 014 1,1,2-Trichloroethane (7 9-00-5) 624 1.0 2.0 0.6 5 087 Trichloroethylene (79- 01-6) 624 1.0 2.0 2.7 5 088 Vinyl chloride (75-01- 4) 624/SM6200B 1.0 2.0 2 5 Acid Compounds 024 2-Chlorophenol (95-57-8) 625 1.0 2.0 81 4 031 2,4-Dichlorophenol (120-83-2) 625 0.5 1.0 93 5 034 2,4-Dimethylphenol (105-67-9) 625 0.5 1.0 380 4 060 4,6-dinitro-o-cresol (534-52-1) (2-methyl-4,6,-dinitrophenol) 625/1625B 1.0 2.0 13.4 5

059 2,4 dinitrophenol (51-28-5) 625 1.0 2.0 70 5 057 2-Nitrophenol (88-75-5) 625 0.5 1.0 450 13 058 4-nitrophenol (100-02-7) 625 0.5 1.0 600 13 022 Parachlorometa cresol (59-50-7) (4-chloro-3-methylphenol) 625 1.0 2.0 -

064 Pentachlorophenol (87-86-5) 625 0.5 1.0 10 0.28 5 065 Phenol (108-95-2) 625 2.0 4.0 21000 5 021 2,4,6-Trichlorophenol (8 8-06-2) 625 2.0 4.0 2.1 5 Base/Neutral Compounds 001 Acenaphthene (83-32-9) 625 0.2 0.4 670 6 077 Acenaphtylene (208-96-8) 625 0.3 0.6 132000 9 078 Anthracene (120-12-7) 625 0.3 0.6 9600 5 005 Benzidine (92-87-5) 625 12 24 0.00012 5 067 Benzyl butyl phthalate (85-68-7) 625 0.3 0.6 1500 072 Benzo( a )anthracene (56-55-3) 625 0.3 0.6 0.0028 5 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 0.0028/0.031 5 074 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 0.0028/0.031 5

079 Benzo( ghi )Perylene (191-24-2) 610/625 0.5 1.0 0.1 9 043 Bis( 2-chloroethoxy) methane (111-91-1) 625 5.3 21.2 92000 9 018 Bis( 2-chloroethyl )ether (111-44-4) 611/625 0.3 1.0 0.031 5 042 Bis( 2-chloroisopropyl )ether (108-60-1) 625 0.3 0.6 1400 5 066 Bis( 2-ethylhexyl )phthalate (117-81-7) 625 0.1 0.5 1.8 5Page 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 0.4 180 10 020 2-Chloronaphthalene (91-58-7) 625 0.3 0.6 1000 6 040 4-Chlorophenyl phenyl ether (7005-72-3) 625 0.3 0.5 365 9 076 Chrysene (218-01-9) 610/625 0.3 0.6 0.0028 5 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 2700 5

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 0.04 5 070 Diethyl phthalate (84-66-2) 625 1.9 7.6 23000 5 071 Dimethyl phthalate (131-11-3) 625 1.6 6.4 313000 5 068 Di-n-butyl phthalate (84-74-2) 625 0.5 1.0 2700 5 035 2,4-dinitrotoluene (121 -14-2) 609 0.2 0.4 0.11 5 036 2,6-dinitrotoluene (606 -20-2) 609/625 0.2 0.4 6250 13 069 Di-n-octyl phthalate (1 17-84-0) 625 0.3 0.6 3.1 13 037 1,2-Diphenylhydrazine ( as Azobenzene ) (122-66-7) 1625B 5.0 20 0.04 5

039 Fluoranthene (206-44-0) 625 0.3 0.6 300 5 080 Fluorene (86-73-7) 625 0.3 0.6 1300 5 009 Hexachlorobenzene (118-74- 1) 612/625 0.3 0.6 0.00075 5 052 Hexachlorobutadiene (87-68-3) 625 0.5 1.0 0.44 5 053 Hexachlorocyclopentadiene (77-47-4) 1625B/625 0.5 1.0 240 5 012 Hexachloroethane (67-72-1) 625 0.5 1.0 1.9 5 083 Indeno( 1,2,3-cd )Pyrene (193-39-5) 610/625 0.5 1.0 0.0028 6 054 Isophorone (78-59-1) 625 0.5 1.0 8.4 5 PBT 3-Methyl cholanthrene (56-49-5) 625 2.0 8.0 _ 055 Naphthalene (91-20-3) 625 0.3 0.6 400 11 056 Nitrobenzene (98-95-3) 625 0.5 1.0 17 5 061 N-Nitrosodimethylamine (62-75-9) 607/625 2.0 4.0 0.00069 5 063 N-Nitrosodi-n-propylamine (621-64-7) 607/625 0.5 1.0 0.005 5 062 N-Nitrosodiphenylamine (86-30-6) 625 0.5 1.0 5 5 PBT Perylene (198-55-0) 625 1.9 7.6 081 Phenanthrene (85-01-8) 625 0.3 0.6 4 11 084 Pyrene (129-00-0) 625 0.3 0.6 960 5 008 1,2,4-Trichlorobenzene (120-82-1) 625 0.3 0.6 35 6
Pesticides/PCBs 089 Aldrin (309-00-2) 608 0.025 0.05 0.00013 5 102 alpha-BHC (319-84-6) 608 0.025 0.05 0.0039 5 103 beta-BHC (319-85-7) 608 0.025 0.05 0.014 5 104 gamma-BHC (58-89-9) 608 0.025 0.05 0.019 5 105 delta-BHC (319-86-8) 608 0.025 0.05 7.0 13 091 Chlordane (57-74-9) 608 0.013 0.25 0.00057 5 092 4,4’-DDT (50-29-3) 608 0.025 0.05 0.00059 5 093 4,4’-DDE (72-55-9) 608 0.025 0.05 10 0.00059 5 094 4,4’ DDD (72-54-8) 608 0.025 0.05 0.00083 5 090 Dieldrin (60-57-1) 608 0.025 0.05 0.00014 5 095 alpha-Endosulfan (959-98-8) 608 0.025 0.05 0.0087 5 096 beta-Endosulfan (33213-65-9) 608 0.025 0.05 0.0087 5Page 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 0.093 5 098 Endrin (72-20-8) 608 0.025 0.05 0.0023 5 099 Endrin Aldehyde (7421-93-4) 608 0.025 0.05 0.76 5 100 Heptachlor (76-44-8) 608 0.025 0.05 0.00021 5 101 Heptachlor Epoxide (1024-57-3) 608 0.025 0.05 0.00010 5 106 PCB-1242 (53469-21-9) 608 0.25 0.5 0.000170 5 107 PCB-1254 (11097-69-1) 608 0.25 0.5 0.000170 5 108 PCB-1221 (11104-28-2) 608 0.25 0.5 0.000170 5 109 PCB-1232 (11141-16-5) 608 0.25 0.5 0.000170 5 110 PCB-1248 (12672-29-6) 608 0.25 0.5 0.000170 5 111 PCB-1260 (11096-82-5) 608 0.13 0.5 10.5 13 112 PCB-1016 (12674-11-2) 608 0.13 0.5 0.42 13 113 Toxaphene (8001-35-2) 608 0.24 0.5 0.00073 5 PBT - Denotes a State of Washington priority pollutant.

1. Detection level (DL) or detection limit means the minimum concentra tion of an analyte (substance) that can be measured and reported with a 99% confidence that the analyt e 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 gi ve recognizable mass spectra (background corrected) and acceptable calibration points. These levels were published as proposed in the Federal Re gister on March 28, 1997. 3. This criterion is dependent upon recei ving 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 Ma nagement Division. These values were obtained from water quality criteria documents and represent the chronic am bient 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.