Permit No. WA-004496-2 

Page 1 of 35 

Issuance Date: June 29, 2010 

Effective Date: July 1, 2010 

Expiration Date: June 30, 2015 

NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM 

WASTE DISCHARGE PERMIT No. WA-004496-2 

State of Washington 

DEPARTMENT OF ECOLOGY 

Olympia, Washington 98504-7600 

In compliance with the provisions of 

The State of Washington Water Pollution Control Law 

Chapter 90.48 Revised Code of Washington 

and 

The Federal Water Pollution Control Act 

(The Clean Water Act) 

Title 33 United States Code, Section 1342 et seq. 

City of Pasco 

P.O. Box 293 

1015 S. Grey Street 

Pasco, WA 99301 

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

Plant Location: 1015 South Grey Street Receiving Water: Columbia River, at RM 

327.6 of the McNary Pool reach of the river. 

Aka Lake Wallula 

Waterbody I.D. No.: 

- 1189897461506

Discharge Location: 

Latitude: 46° 12' 58" N 

Longitude: 119° 05' 12" W 

Plant Type: 

Advanced Secondary treatment with activated sludge and ultraviolet light disinfection 

James M. Bellatty 

Water Quality Section Manager 

Eastern Regional Office 

Washington State Department of Ecology
Permit No. WA-004496-2 

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TABLE OF CONTENTS 

SUMMARY OF PERMIT REPORT SUBMITTALS .....................................................................4

SPECIAL CONDITIONS

S1. DISCHARGE LIMITS .............................................................................................................5

A. Effluent Limits

B. Mixing Zone Authorization

S2. MONITORING REQUIREMENTS .........................................................................................6

A. Monitoring Schedule

B. Sampling and Analytical Procedures

C. Flow Measurement, and Continuous Monitoring Devices

D. Laboratory Accreditation

S3. REPORTING AND RECORDING REQUIREMENTS ........................................................10

A. Reporting

B. Records Retention

C. Recording of Results

D. Additional Monitoring by the Permittee

E. Reporting Permit Violations

F. Maintaining a Copy of This Permit

S4. FACILITY LOADING ...........................................................................................................13

A. Design Criteria

B. Plans for Maintaining Adequate Capacity

C. Duty to Mitigate

D. Notification of New or Altered Sources

S5. OPERATION AND MAINTENANCE ..................................................................................14

A. Certified Operator

B. O & M Program

C. Short-term Reduction

D. Electrical Power Failure

E. Prevent Connection of Inflow

F. Bypass Procedures

G. Operations and Maintenance Manual

S6. PRETREATMENT .................................................................................................................18

A. General Requirements

B. Duty to Enforce Discharge Prohibitions

C. Wastewater Discharge Permit Required

D. Identification and Reporting of Existing, New, and Proposed Industrial Users

E. Local Limit Development

S7. SOLID WASTES ....................................................................................................................20

A. Solid Waste Handling

B. Leachate
Permit No. WA-004496-2 

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S8. COMPLIANCE SCHEDULE ................................................................................................20

S9. APPLICATION FOR PERMIT RENEWAL .........................................................................21

GENERAL CONDITIONS

G1. SIGNATORY REQUIREMENTS.....................................................................................22

G2. RIGHT OF INSPECTION AND ENTRY .........................................................................23

G3. PERMIT ACTIONS...........................................................................................................23

G4. REPORTING PLANNED CHANGES .............................................................................26

G5. PLAN REVIEW REQUIRED ...........................................................................................26

G6. COMPLIANCE WITH OTHER LAWS AND STATUTES .............................................26

G7. TRANSFER OF THIS PERMIT .......................................................................................26

G8. REDUCED PRODUCTION FOR COMPLIANCE ..........................................................27

G9. REMOVED SUBSTANCES .............................................................................................27

G10. DUTY TO PROVIDE INFORMATION ...........................................................................27

G11. OTHER REQUIREMENTS OF 40 CFR ...........................................................................27

G12. ADDITIONAL MONITORING ........................................................................................27

G13. PAYMENT OF FEES ........................................................................................................28

G14. PENALTIES FOR VIOLATING PERMIT CONDITIONS .............................................28

G15. UPSET ...............................................................................................................................28

G16. PROPERTY RIGHTS ........................................................................................................28

G17. DUTY TO COMPLY ........................................................................................................29

G18. TOXIC POLLUTANTS.....................................................................................................29

G19. PENALTIES FOR TAMPERING .....................................................................................29

G20. COMPLIANCE SCHEDULES .........................................................................................29

G21. CONTRACT REVIEW .....................................................................................................29

Appendix A ...................................................................................................................................30
Permit No. WA-004496-2 

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SUMMARY OF PERMIT REPORT SUBMITTALS 

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

Permit 

Section

Submittal Frequency First Submittal Date 

S3 Discharge Monitoring Report Monthly August 15, 2010 

S3.E Reporting Permit Violations As necessary 

S3.F Other Reporting As necessary 

S4.B Plans for Maintaining Adequate 

Capacity 

As necessary 

S4.D Notification of New or Altered Sources As necessary 

S5.G. Operations and Maintenance Manual 

Update or Review Confirmation Letter 

Annually 

S6.E Local Limits Development 1/permit cycle April 15, 2011 

S8. Engineering Report 1/permit cycle January 15, 2011 

S9. Permit Application 1/permit cycle December 31, 2014 

G1.C Notice of Change in Authorization As necessary 

G4 Reporting Planned Changes As necessary 

G5 Engineering Report for Construction or 

Modification Activities 

As necessary 

G7 Notice of Permit Transfer As necessary 

G10 Duty to Provide Information As necessary 

G23 Contract Submittal As necessary 
Permit No. WA-004496-2 

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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

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

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

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

violates the terms and conditions of this permit. 

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

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

compliance with the following limits: 

EFFLUENT LIMITS: OUTFALL # 1

Parameter Average Monthly a Average Weekly b

Biochemical Oxygen 

Demand (5-day) 

30 mg/L, 1131 lbs/day 

85% removal of influent BOD 

45 mg/L, 1696 lbs/day 

Total Suspended Solids 30 mg/L, 1131 lbs/day 

85% removal of influent TSS 

45 mg/L, 1696 lbs/day 

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

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

the daily maximum is less than or equal to 9.0. 

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

calendar month. To calculate the discharge value to compare to the limit, you add the value of 

each daily discharge measured during a calendar month and divide this sum by the total 

number of daily discharges measured. See footnote c for fecal coliform calculations.

b Average weekly discharge limitation means the highest allowable average of “daily 

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

during a calendar week divided by the number of “daily discharges” measured during that 

week. See footnote c

 for fecal coliform calculations.

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

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

020, Information Manual for Treatment Plant Operators available at: 

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

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

maximum and minimum pH monthly. Do not average pH values.
Permit No. WA-004496-2 

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B. Mixing Zone Authorization

The following paragraphs define the maximum boundaries or flow-volume restriction of 

the mixing zones: 

The chronic mixing zone shall extend no more than 330 feet downstream from the point 

of discharge. 

The acute mixing zone shall extend no more than 33 feet downstream of the point of 

discharge. 

Available Dilution (dilution factor) 

Acute Aquatic Life Criteria 1:181

Chronic Aquatic Life Criteria 1:2198 

Human Health Criteria - Carcinogen 1:8477 

Human Health Criteria - Non-carcinogen 1:3077 

S2. MONITORING REQUIREMENTS 

A. Monitoring Schedule

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

laboratory methods, and meet the detection levels (DL), and quantitation levels (QL) 

specified in Appendix A. The Permittee may use alternative methods included in 40 

CFR Part 136 if the DL and QL are equivalent to those specified in Appendix A or if 

the alternative method’s DL and QL are low enough to detect the parameter: 

Parameter Units Minimum Sampling 

Frequency 

Sample Type 

(1) Wastewater Influent

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

headworks of the treatment plant excluding any side-stream returns from inside the plant. 

Flow MGD Daily Continuous 

measurement b

BOD5 mg/L 2/week 24 hour composite c

BOD5 lbs/day 2/week 24 hour composite c

TSS mg/L 2/week 24 hour composite c

TSS lbs/day 2/week 24 hour composite c

Ammonia Nitrogen 

(NH3-N) 

mg/L 2/week 24 hour composite c

Total Phosphorus mg/L 2/month on alternate 

weeks 

24 hour composite c
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Parameter Units Minimum Sampling 

Frequency 

Sample Type 

Temperature °C Daily Continuous with 

thermistor or equal 

See. S.2.C.3 

Dissolved Oxygen mg/L Daily Grab e

pH std units Daily Grab e

Cyanide mg/L Quarterly a Grab e 

Phenols mg/L Quarterly a Grab e

volatile organic 

compounds 

mg/L Twice a year – February 

and August 

24 hour composite c

base-neutral 

compounds 

mg/L Twice a year – February 

and August 

24 hour composite c

acid-extractable 

compounds 

mg/L Twice a year – February 

and August 

24 hour composite c

Copper ug/L Quarterly a 24 hour composite c

Lead ug/L Yearly in first quarter a 24 hour composite c

Cadmium ug/L Yearly in first quarter a 24 hour composite c

Mercury ug/L Yearly in first quarter a 24 hour composite c

(2) Final Wastewater Effluent

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

process or operation. Typically, this is after or at the exit from the disinfection process. The 

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

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

Flow MGD Daily Continuous 

measurement b

BOD5 mg/L 2/week 24 hour composite c

BOD5 lbs/day 2/week 24 hour composite c

BOD5 % removal d 2/week 24 hour composite c

TSS mg/L 2/week 24 hour composite c

TSS lbs/day 2/week 24 hour composite c

TSS % removal d 2/week 24 hour composite c

Ammonia Nitrogen 

(NH3-N) 

mg/L 2/week 24 hour composite c

Total Phosphorus mg/L 2/month on alternate 

weeks 

24 hour composite c

Fecal Coliform Org./100 ml 2/week Grab e

pH Standard Units Daily Grab e

Temperature °C Daily Continuous with 

thermistor or equal 

See. S.2.C.3 
Permit No. WA-004496-2 

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Parameter Units Minimum Sampling 

Frequency 

Sample Type 

Dissolved Oxygen mg/L 5/week Grab e

Cyanide mg/L Quarterly b Grab e

Phenols mg/L Quarterly b Grab e

volatile compounds g mg/L Twice a year – February 

and August 

24 hour composite c

base-neutral 

compounds g

mg/L Twice a year – February 

and August 

24 hour composite c

acid compounds g mg/L Twice a year – February 

and August 

24 hour composite c

Copper ug/L Quarterly b 24 hour composite c

Arsenic ug/L Yearly in first quarter b 24 hour composite c

Cadmium ug/L Yearly in first quarter b 24 hour composite c

Lead ug/L Yearly in first quarter b 24 hour composite c

Mercury ug/L Yearly in first quarter b 24 hour composite c

Molybdenum ug/L Yearly in first quarter b 24 hour composite c

Selenium ug/L Yearly in first quarter b 24 hour composite c

Zinc ug/L Yearly in first quarter b 24 hour composite c

For Temperature sampling measured continuously, the Permittee must determine and report a 

daily maximum from half-hour measurements in a 24-hour period. To determine the daily 

average, use the temperature on the half-hour from the chart for the twenty-four (24) hour period 

and calculate the average of the values. Continuous monitoring instruments must achieve an 

accuracy of 0.2 degrees C and the Permittee must verify accuracy annually. See S.2.C.3. 

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

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

a Quarter is defined as: Jan.-March, April – June, July – Sept., October – December 

b Continuous means uninterrupted except for brief lengths of time for calibration, for power 

failure, or for unanticipated equipment repair or maintenance. 

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

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

Effluent Concentration)/Average Monthly Influent Concentration. 

e Grab means an individual sample collected over a fifteen (15) minute, or less, period. 

f 3/week means three (3) times during each calendar week and on a rotational basis throughout 

the days of the week, except weekends and holidays.

g See Appendix A for the specific parameters and 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. 
Permit No. WA-004496-2 

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Parameter Units Minimum Sampling 

Frequency 

Sample Type 

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

with qualifier code of j following the value. 

To calculate the average value (monthly average): 

• Use the reported numeric value for all parameters measured between the agencyrequired detection value and the agency-required quantitation value. 

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

detected the parameter in another sample for the reporting period. 

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

in another sample for the reporting period. 

If the Permittee is unable to obtain the required DL and QL in its effluent due to matrix effects, 

the Permittee must submit a matrix specific MDL and a QL to Ecology with appropriate 

laboratory documentation.

 

B. Sampling and Analytical Procedures

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

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

representative sampling of any unusual discharge or discharge condition, including 

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

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

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

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

C. Flow Measurement, and Continuous Monitoring Devices

 The Permittee must: 

1. Select and use appropriate flow measurement and continuous monitoring devices 

and methods consistent with accepted scientific practices. 

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

measurements is consistent with the accepted industry standard and the 

manufacturer’s recommendation for that type of device. 

3. If the Permittee uses micro-recording temperature devices known as thermistors it 

must calibrate the devices using protocols from Ecology’s Quality Assurance 

Project Plan Development Tool (Continuous Temperature Sampling Protocols for 

the Environmental Monitoring and Trends). This document is available online at 

http://www.ecy.wa.gov/programs/eap/qa/docs/QAPPtool/Mod6%20Ecology%20S

OPs/Protocols/ContinuousTemperatureSampling.pdf. Calibration as specified in 

this document is not required if the Permittee uses recording devices which are 

certified by the manufacturer. 

4. Calibrate flow monitoring devices at a minimum frequency of at least one 

calibration per year. 

5. Maintain calibration records for at least three years. 
Permit No. WA-004496-2 

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D. Laboratory Accreditation

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

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

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

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

requirement. 

S3. REPORTING AND RECORDING REQUIREMENTS 

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

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

of this permit. 

A. Reporting

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

must: 

1. Submit monitoring results each month. 

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

period on a Discharge Monitoring Report (DMR) form provided, or otherwise 

approved, by Ecology. 

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

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

required with the words "NO DISCHARGE" entered in place of the monitoring 

results. 

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

15th day of the month following the completed monitoring period, unless otherwise 

specified in this permit. 

5. Submit priority pollutant analysis data no later than forty-five (45) days following 

the monitoring. 

6. Send report(s) to Ecology at: 

Water Quality Permit Coordinator 

Department of Ecology 

Eastern Regional Office 

4601 North Monroe Street 

Spokane, WA 99205-1295 

 

 
Permit No. WA-004496-2 

Page 11 of 35 

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

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

name, CAS number, analytical method/number, method detection limit (MDL), 

laboratory practical quantitation limit (PQL), reporting units, and concentration 

detected. Analytical results from samples sent to a contract laboratory must include 

information on the chain of custody, the analytical method, QA/QC results, and 

documentation of accreditation for the parameter. 

B. Records Retention

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

(3) years. Such information must include all calibration and maintenance records and 

all original recordings for continuous monitoring instrumentation, copies of all reports 

required by this permit, and records of all data used to complete the application for this 

permit. The Permittee must extend this period of retention during the course of any 

unresolved litigation regarding the discharge of pollutants by the Permittee or when 

requested by Ecology. 

C. Recording of Results

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

information: 

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

2. The individual who performed the sampling or measurement. 

3. The dates the analyses were performed. 

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: 

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

otherwise stop the noncompliance and correct the problem. 

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

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

 
Permit No. WA-004496-2 

Page 12 of 35 

 1. Immediate Reporting

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

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

Eastern Regional Office 509-329-3400 

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

system overflows, or any plant bypass discharging to a waterbody used as a source 

of drinking water immediately to the Department of Ecology and the Department of

Health, Drinking Water Program at the numbers listed below: 

Eastern Regional Office 509-329-3400 

Department of Health, 

Drinking Water Program 

360-521-0323 (business hours) 

360-481-4901 (after business hours) 

2. Twenty-four-hour Reporting

The Permittee must report the following occurrences of noncompliance by 

telephone, to Ecology at (509)329-3400, within 24 hours from the time the 

Permittee becomes aware of any of the following circumstances: 

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

previously reported under subpart 1, above. 

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

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

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

“Upset”). 

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

limitation for any of the pollutants in Section S1.A 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 limitation in the 

permit. 

3. Report Within Five Days

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

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

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

a. A description of the noncompliance and its cause. 

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

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

corrected. 
Permit No. WA-004496-2 

Page 13 of 35 

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

noncompliance. 

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

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

4. Waiver of Written Reports

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

case-by-case basis upon request if a timely oral report has been received. 

5. All Other Permit Violation Reporting

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

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

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

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

responsibility to maintain continuous compliance with the terms and conditions of 

this permit or the resulting liability for failure to comply. 

6. Report Submittal

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

F. 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: 

Influent Loadings in the Design Criteria Year 

 2030 

Flow 

Average Annual (MGD) TBD 

Maximum Month (MGD) TBD 

Maximum Day (MGD) TBD 

Maximum Hour (MGD) TBD 

Wastewater Loadings 

BOD5 – Average Annual (1,000 lbs/day) TBD 

BOD5 – Maximum Month (1,000 lbs/day) TBD 

TSS – Average Annual (1,000 lbs/day) TBD 

TSS – Maximum Month (1,000 lbs/day) TBD 

Ammonia – Average Annual (1,000 lbs/day) TBD 

Ammonia – Maximum Month (1,000 lbs/day) TBD 
Permit No. WA-004496-2 

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B. Plans for Maintaining Adequate Capacity

See section S8, Compliance Schedule. 

C. Duty to Mitigate

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

sludge use or disposal in violation of this permit that has a reasonable likelihood of 

adversely affecting human health or the environment. 

D. Notification of New or Altered Sources

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

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

POTW is proposed which: 

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

portion of the POTW; 

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

specifications; or 

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

Section 307(b) of the Clean Water Act. 

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

transport and treat the added flow and/or waste load, the quality and volume of 

effluent to be discharged to the POTW, and the anticipated impact on the 

Permittee’s effluent [40 CFR 122.42(b)]. 

S5. OPERATION AND MAINTENANCE 

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

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

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

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

controls, and appropriate quality assurance procedures. This provision of the permit 

requires the Permittee to operate backup or auxiliary facilities or similar systems only when 

the operation is necessary to achieve compliance with the conditions of this permit. 

A. Certified Operator

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

Washington for at least a Class III plant. This operator must be in responsible charge of 

the day-to-day operation of the wastewater treatment plant. An operator certified for at 

least a Class II plant must be in charge during all regularly scheduled shifts. 

 
Permit No. WA-004496-2 

Page 15 of 35 

B. O & M Program

 The Permittee must: 

1. Institute an adequate operation and maintenance program for the entire sewage 

system. 

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

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

records must clearly specify the frequency and type of maintenance recommended 

by the manufacturer and must show the frequency and type of maintenance 

performed. 

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

C. Short-term Reduction

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

of wastewater treatment and degrade effluent quality, during non-critical water quality 

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

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

violation of permit discharge limits on a short-term basis for any reason, and such 

reduction cannot be avoided, the Permittee must: 

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

activities. 

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

level of treatment. 

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

D. Electrical Power Failure

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

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

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

safeguards include, but are not limited to: alternate power sources, standby 

generator(s), or retention of inadequately treated wastes. 

For Reliability Class II - The Permittee must maintain Reliability Class II (EPA 430/9-

74-001) at the wastewater treatment plant, Reliability Class II requires a backup power 

source sufficient to operate all vital components and critical lighting and ventilation 

during peak wastewater flow conditions. Vital components used to support the 

secondary processes (i.e., mechanical aerators or aeration basin air compressors) need 

not be operable to full levels of treatment, but must be sufficient to maintain the biota. 
Permit No. WA-004496-2 

Page 16 of 35 

E. Prevent Connection of Inflow

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

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

F. Bypass Procedures

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

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

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

1. Bypass for Essential Maintenance without the Potential to Cause Violation of 

Permit Limits or Conditions. 

Bypass is authorized if it is for essential maintenance and does not have the potential to 

cause violations of limits or other conditions of this permit, or adversely impact 

public health as determined by Ecology prior to the bypass. The Permittee must 

submit prior notice, if possible, at least ten (10) days before the date of the bypass. 

2. Bypass which is Unavoidable, Unanticipated, and Results in Noncompliance of this 

Permit. 

This bypass is permitted only if: 

a. Bypass is unavoidable to prevent loss of life, personal injury, or severe 

property damage. “Severe property damage” means substantial physical 

damage to property, damage to the treatment facilities which would cause them 

to become inoperable, or substantial and permanent loss of natural resources 

which can reasonably be expected to occur in the absence of a bypass. 

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

• The use of auxiliary treatment facilities. 

• Retention of untreated wastes. 

• Stopping production. 

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

Permittee should have installed adequate backup equipment in the exercise 

of reasonable engineering judgment to prevent a bypass. 

• Transport of untreated wastes to another treatment facility or preventative 

maintenance), or transport of untreated wastes to another treatment 

facility. 

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

permit. 

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

permit. 
Permit No. WA-004496-2 

Page 17 of 35 

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

date of bypass. The notice must contain: 

• A description of the bypass and its cause. 

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

mitigate the need for bypassing. 

• A cost-effectiveness analysis of alternatives including comparative 

resource damage assessment. 

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

• A recommendation as to the preferred alternative for conducting the 

bypass. 

• The projected date of bypass initiation. 

• A statement of compliance with SEPA. 

• A request for modification of water quality standards as provided for in 

WAC 173-201A-410, if an exceedance of any water quality standard is 

anticipated. 

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

reoccurrence of the bypass. 

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

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

must consider the analysis required above during preparation of the 

engineering report or facilities plan and plans and specifications and must 

include these to the extent practical. In cases where the Permittee determines 

the probable need to bypass early, the Permittee must continue to analyze 

conditions up to and including the construction period in an effort to minimize 

or eliminate the bypass. 

c. Ecology will consider the following prior to issuing an administrative order for 

this type of bypass: 

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

activities essential to meet the requirements of this permit. 

• If feasible alternatives to bypass exist, such as the use of auxiliary 

treatment facilities, retention of untreated wastes, stopping production, 

maintenance during normal periods of equipment down time, or transport 

of untreated wastes to another treatment facility. 

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

effects on the public and the environment. 

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

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

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

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

an administrative order under RCW 90.48.120. 
Permit No. WA-004496-2 

Page 18 of 35 

G. Operations and Maintenance Manual

The Permittee must: 

1. Review the O&M Manual at least annually and confirm this review by letter to 

Ecology. 

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

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

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

4. Follow the instructions and procedures of this manual. 

S6. PRETREATMENT 

A. General Requirements

The Permittee must work with Ecology to ensure that all commercial and industrial 

users of the publicly owned treatment works (POTW) comply with the pretreatment 

regulations in 40 CFR Part 403 and any additional regulations that the Environmental 

Protection Agency (U.S. EPA) may promulgate under Section 307(b) (pretreatment) 

and 308 (reporting) of the Federal Clean Water Act.

B. Duty to Enforce Discharge Prohibitions

1. Under 40 CFR 403.5(a), the Permittee must not authorize or knowingly allow the 

discharge of any pollutants into its POTW which may be reasonably expected to 

cause pass through or interference, or which otherwise violate general or specific 

discharge prohibitions contained in 40 CFR Part 403.5 or WAC-173-216-060. 

2. The Permittee must not authorize or knowingly allow the introduction of any of the 

following into their treatment works: 

a. Pollutants which create a fire or explosion hazard in the POTW (including, but 

not limited to waste streams with a closed cup flashpoint of less than 140 

degrees Fahrenheit or 60 degrees Centigrade using the test methods specified 

in 40 CFR 261.21). 

b. Pollutants which will cause corrosive structural damage to the POTW, but in 

no case discharges with pH lower than 5.0, or greater than 11.0 standard units, 

unless the works are specifically designed to accommodate such discharges. 

c. Solid or viscous pollutants in amounts that could cause obstruction to the flow 

in sewers or otherwise interfere with the operation of the POTW. 

d. Any pollutant, including oxygen demanding pollutants, (BOD, etc.) released in 

a discharge at a flow rate and/or pollutant concentration which will cause 

interference with the POTW. 
Permit No. WA-004496-2 

Page 19 of 35 

e. Petroleum oil, non-biodegradable cutting oil, or products of mineral origin in 

amounts that will cause interference or pass through. 

f. Pollutants which result in the presence of toxic gases, vapors, or fumes within 

the POTW in a quantity which may cause acute worker health and safety 

problems. 

g. Heat in amounts that will inhibit biological activity in the POTW resulting in 

interference but in no case heat in such quantities such that the temperature at 

the POTW headworks exceeds 40 degrees Centigrade (104 degrees Fahrenheit) 

unless Ecology, upon request of the Permittee, approves, in writing, alternate 

temperature limits. 

h. Any trucked or hauled pollutants, except at discharge points designated by the 

Permittee. 

i. Wastewaters prohibited to be discharged to the POTW by the Dangerous 

Waste Regulations (chapter 173-303 WAC), unless authorized under the 

Domestic Sewage Exclusion (WAC 173-303-071). 

3. The Permittee must also not allow the following discharges to the POTW unless 

approved in writing by Ecology: 

a. Noncontact cooling water in significant volumes.

b. Stormwater and other direct inflow sources. 

c. Wastewaters significantly affecting system hydraulic loading, which do not 

require treatment, or would not be afforded a significant degree of treatment by 

the system. 

4. The Permittee must notify Ecology if any industrial user violates the prohibitions 

listed in this section (S6.B), and initiate enforcement action to promptly curtail any 

such discharge. 

C. Wastewater Discharge Permit Required

 The Permittee must require all non-domestic discharges to apply for a permit, and may 

not allow any significant industrial users (SIUs) to discharge wastewater to the 

Permittee's sewer system until such user has received a wastewater discharge permit 

from Ecology in accordance with chapter 90.48 RCW and chapter 173-216 WAC. 

D. Identification and Reporting of Existing, New, and Proposed Industrial Users

1. The Permittee must take continuous, routine measures to identify all existing, new, 

and proposed SIUs and potential significant industrial users (PSIUs) discharging or 

proposing to discharge to the Permittee's sewer system (see Appendix B of the Fact 

Sheet for definitions). 
Permit No. WA-004496-2 

Page 20 of 35 

2. Within 30 days of becoming aware of an unpermitted existing, new, or proposed 

industrial user who may be an SIU, the Permittee must notify such user by 

registered mail that, if classified as an SIU, they must apply to Ecology and obtain a 

State Waste Discharge Permit. The Permittee must send a copy of this notification 

letter to Ecology within this same 30-day period. 

3. The Permittee must also notify all Potential SIUs (PSIUs), as they are identified, 

that if their classification should change to an SIU, they must apply to Ecology for a 

State Waste Discharge Permit within 30 days of such change. 

E. Local Limit Development

 By April 15, 2011, the Permittee shall, in consultation with the Department, reevaluate 

and update their local limits in order to prevent pass through or interference. 

 If Ecology determines that any pollutant present causes pass through or interference, or 

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

revise existing local limits as required by 40 CFR 403.5. Ecology may also require the 

Permittee to revise or establish local limits for any pollutant discharged from the POTW 

that has a reasonable potential to exceed the Water Quality Standards, or established 

effluent limits, or causes whole effluent toxicity. The determination by the Department 

shall be in the form of an Administrative Order. 

S7. SOLID WASTES 

A. Solid Waste Handling

 The Permittee must handle and dispose of all solid waste material in such a manner as 

to prevent its entry into state ground or surface water. 

B. Leachate

 The Permittee must not allow leachate from its solid waste material to enter state waters 

without providing all known, available and reasonable methods of treatment, nor allow 

such leachate to cause violations of the State Surface Water Quality Standards, Chapter 

173-201A WAC, or the State Ground Water Quality Standards, Chapter 173-200 WAC. 

The Permittee must apply for a permit or permit modification as may be required for 

such discharges to state ground or surface waters. 

S8. COMPLIANCE SCHEDULE 

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

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

approval by January 15, 2011. 

B. The engineering report must evaluate the hydraulic and organic loading capacity of the 

City of Pasco’s wastewater facilities as they currently exist and if necessary recommend 

upgrades appropriate for the wastewater facilities to provide 20 years of additional 

service to the community. The engineering report must include a Tier II analysis 

demonstrating that accommodating an additional 20 years the hydraulic and organic 

loading capacity will not cause measurable degradation to existing water quality at the 

edge of a chronic mixing zone. 
Permit No. WA-004496-2 

Page 21 of 35 

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

Reclamation and Reuse Standards (Washington State Department of Ecology and 

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

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

90.46.010. 

S9. APPLICATION FOR PERMIT RENEWAL 

The Permittee must submit an application for renewal of this permit by December 31, 2014. 

The Permittee need only submit an updated EPA Form 1 unless it has made significant 

changes and needs to update Form 2A. 
Permit No. WA-004496-2 

Page 22 of 35 

GENERAL CONDITIONS 

G1. SIGNATORY REQUIREMENTS 

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

certified. 

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

For the purpose of this section, a responsible corporate officer means: 

(i) A president, secretary, treasurer, or vice-president of the corporation in charge 

of a principal business function, or any other person who performs similar 

policy or decision making functions for the corporation, or 

(ii) The manager of one or more manufacturing, production, or operating facilities, 

provided, the manager is authorized to make management decisions which 

govern the operation of the regulated facility including having the explicit or 

implicit duty of making major capital investment recommendations, and 

initiating and directing other comprehensive measures to assure long-term 

environmental compliance with environmental laws and regulations; the manager 

can ensure that the necessary systems are established or actions taken to gather 

complete and accurate information for permit application requirements; and 

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

in accordance with corporate procedures. 

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

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

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

executive officer or ranking elected official. 

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

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

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

signed by a person described above or by a duly authorized representative of that 

person. A person is a duly authorized representative only if: 

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

Ecology. 

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

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

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

position having overall responsibility for environmental matters. (A duly 

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

occupying a named position.) 
Permit No. WA-004496-2 

Page 23 of 35 

C. Changes to authorization. If an authorization under paragraph B.2, above, is no longer 

accurate because a different individual or position has responsibility for the overall 

operation of the facility, a new authorization satisfying the requirements of paragraph 

B.2, above, must be submitted to Ecology prior to or together with any reports, 

information, or applications to be signed by an authorized representative. 

D. Certification. Any person signing a document under this section must make the 

following certification: 

“I certify under penalty of law, that this document and all 

attachments were prepared under my direction or supervision in 

accordance with a system designed to assure that qualified 

personnel properly gathered and evaluated the information 

submitted. Based on my inquiry of the person or persons who 

manage the system or those persons directly responsible for 

gathering information, the information submitted is, to the best of 

my knowledge and belief, true, accurate, and complete. I am 

aware that there are significant penalties for submitting false 

information, including the possibility of fine and imprisonment for 

knowing violations.” 

G2. RIGHT OF INSPECTION AND ENTRY 

The Permittee must allow an authorized representative of Ecology, upon the presentation of 

credentials and such other documents as may be required by law: 

A. To enter upon the premises where a discharge is located or where any records must be 

kept under the terms and conditions of this permit.

B. To have access to and copy, at reasonable times and at reasonable cost, any records 

required to be kept under the terms and conditions of this permit. 

C. To inspect, at reasonable times, any facilities, equipment (including monitoring and 

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

permit. 

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

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

Water Act. 

G3. PERMIT ACTIONS 

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

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

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

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

CFR 124.5. 

 
Permit No. WA-004496-2 

Page 24 of 35 

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

permit renewal application: 

1. Violation of any permit term or condition. 

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

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

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

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

regulated to acceptable levels by permit modification or termination. 

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

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

permit. 

6. Nonpayment of fees assessed pursuant to RCW 90.48.465. 

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

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

when the Permittee requests or agrees: 

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

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

justified the application of different permit conditions. 

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

activities which occurred after this permit issuance. 

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

upon permit conditions, or requiring permit revision. 

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

criteria of 40 CFR Part 122.62. 

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

schedule, and the modification will not violate statutory deadlines. 

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

permit. 

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

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

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

appropriate. 
Permit No. WA-004496-2 

Page 25 of 35 

 
Permit No. WA-004496-2 

Page 26 of 35 

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

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

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

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

G4. REPORTING PLANNED CHANGES 

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

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

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

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

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

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

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

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

and reissued pursuant to 40 CFR 122.62(a) to specify and limit any pollutants not previously 

limited. Until such modification is effective, any new or increased discharge in excess of 

permit limits or not specifically authorized by this permit constitutes a violation. 

G5. PLAN REVIEW REQUIRED 

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

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

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

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

unless a shorter time is approved by Ecology. Facilities must be constructed and operated in 

accordance with the approved plans. 

G6. COMPLIANCE WITH OTHER LAWS AND STATUTES 

Nothing in this permit must be construed as excusing the Permittee from compliance with 

any applicable federal, state, or local statutes, ordinances, or regulations. 

G7. TRANSFER OF THIS PERMIT 

In the event of any change in control or ownership of facilities from which the authorized 

discharge emanate, the Permittee must notify the succeeding owner or controller of the 

existence of this permit by letter, a copy of which must be forwarded to Ecology. 

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. 

 
Permit No. WA-004496-2 

Page 27 of 35 

B. Automatic Transfers

This permit may be automatically transferred to a new Permittee if: 

1. The Permittee notifies Ecology at least thirty (30) days in advance of the proposed 

transfer date. 

2. The notice includes a written agreement between the existing and new Permittees 

containing a specific date transfer of permit responsibility, coverage, and liability 

between them. 

3. Ecology does not notify the existing Permittee and the proposed new Permittee of 

its intent to modify or revoke and reissue this permit. A modification under this 

subparagraph may also be minor modification under 40 CFR 122.63. If this notice 

is not received, the transfer is effective on the date specified in the written 

agreement. 

G8. REDUCED PRODUCTION FOR COMPLIANCE 

The Permittee, in order to maintain compliance with its permit, must control production 

and/or all discharges upon reduction, loss, failure, or bypass of the treatment facility until 

the facility is restored or an alternative method of treatment is provided. This requirement 

applies in the situation where, among other things, the primary source of power of the 

treatment facility is reduced, lost, or fails. 

G9. REMOVED SUBSTANCES 

Collected screenings, grit, solids, sludges, filter backwash, or other pollutants removed in 

the course of treatment or control of wastewaters must not be resuspended or reintroduced to 

the final effluent stream for discharge to state waters. 

G10. DUTY TO PROVIDE INFORMATION 

The Permittee must submit to Ecology, within a reasonable time, all information which 

Ecology may request to determine whether cause exists for modifying, revoking and 

reissuing, or terminating this permit or to determine compliance with this permit. The 

Permittee must also submit to Ecology upon request, copies of records required to be kept 

by this permit. 

G11. OTHER REQUIREMENTS OF 40 CFR 

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

reference. 

G12. ADDITIONAL MONITORING 

Ecology may establish specific monitoring requirements in addition to those contained in 

this permit by administrative order or permit modification. 
Permit No. WA-004496-2 

Page 28 of 35 

G13. PAYMENT OF FEES 

The Permittee must submit payment of fees associated with this permit as assessed by 

Ecology. 

G14. PENALTIES FOR VIOLATING PERMIT CONDITIONS 

Any person who is found guilty of willfully violating the terms and conditions of this permit 

is deemed guilty of a crime, and upon conviction thereof must be punished by a fine of up to 

ten thousand dollars ($10,000) and costs of prosecution, or by imprisonment in the 

discretion of the court. Each day upon which a willful violation occurs may be deemed a 

separate and additional violation. 

Any person who violates the terms and conditions of a waste discharge permit will incur, in 

addition to any other penalty as provided by law, a civil penalty in the amount of up to ten 

thousand dollars ($10,000) for every such violation. Each and every such violation is a 

separate and distinct offense, and in case of a continuing violation, every day's continuance 

is deemed to be a separate and distinct violation. 

G15. UPSET 

Definition – “Upset” means an exceptional incident in which there is unintentional and 

temporary noncompliance with technology-based permit effluent limits because of factors 

beyond the reasonable control of the Permittee. An upset does not include noncompliance to 

the extent caused by operational error, improperly designed treatment facilities, inadequate 

treatment facilities, lack of preventive maintenance, or careless or improper operation. 

An upset constitutes an affirmative defense to an action brought for noncompliance with 

such technology-based permit effluent limits if the requirements of the following paragraph 

are met. 

A Permittee who wishes to establish the affirmative defense of upset must demonstrate, 

through properly signed, contemporaneous operating logs, or other relevant evidence that: 

1) an upset occurred and that the Permittee can identify the cause(s) of the upset; 

2) the permitted facility was being properly operated at the time of the upset; 

3) the Permittee submitted notice of the upset as required in Condition S3.E; and 

4) the Permittee complied with any remedial measures required under S4.C of this permit. 

In any enforcement action, the Permittee seeking to establish the occurrence of an upset has 

the burden of proof. 

G16. PROPERTY RIGHTS 

This permit does not convey any property rights of any sort, or any exclusive privilege. 
Permit No. WA-004496-2 

Page 29 of 35 

G17. DUTY TO COMPLY 

The Permittee must comply with all conditions of this permit. Any permit noncompliance 

constitutes a violation of the Clean Water Act and is grounds for enforcement action; for 

permit termination, revocation and reissuance, or modification; or denial of a permit renewal 

application. 

G18. TOXIC POLLUTANTS 

The Permittee must comply with effluent standards or prohibitions established under 

Section 307(a) of the Clean Water Act for toxic pollutants within the time provided in the 

regulations that establish those standards or prohibitions, even if this permit has not yet been 

modified to incorporate the requirement. 

G19. PENALTIES FOR TAMPERING 

The Clean Water Act provides that any person who falsifies, tampers with, or knowingly 

renders inaccurate any monitoring device or method required to be maintained under this 

permit must, upon conviction, be punished by a fine of not more than $10,000 per violation, 

or by imprisonment for not more than two (2) years per violation, or by both. If a conviction 

of a person is for a violation committed after a first conviction of such person under this 

condition, punishment must be a fine of not more than $20,000 per day of violation, or by 

imprisonment of not more than four (4) years, or by both. 

G20. COMPLIANCE SCHEDULES 

Reports of compliance or noncompliance with, or any progress reports on, interim and final 

requirements contained in any compliance schedule of this permit must be submitted no 

later than fourteen (14) days following each schedule date. 

G21. CONTRACT REVIEW 

The Permittee must submit to Ecology any proposed contract for the operation of any 

wastewater treatment facility covered by this permit. The review is to ensure consistency 

with chapters 90.46 and 90.48 RCW. In the event that Ecology does not comment within a 

thirty (30)-day period, the Permittee may assume consistency and proceed with the contract. 
Permit No. WA-004496-2 

Page 30 of 35 

APPENDIX A 

EFFLUENT CHARACTERIZATION FOR POLLUTANTS 

THIS LIST INCLUDES EPA REQUIRED POLLUTANTS (PRIORITY POLLUTANTS) 

AND SOME ECOLOGY PRIORITY TOXIC CHEMICALS (PBTs) 

The following table specifies analytical methods and levels to be used for effluent 

characterization in NPDES and State waste discharge permits. This appendix specifies effluent 

characterization requirements of the Department of Ecology unless other methods are specified 

in the body of this permit. 

This permit specifies the compounds and groups of compounds to be analyzed. Ecology may 

require additional pollutants to be analyzed within a group. The objective of this appendix is to 

reduce the number of analytical “non-detects” in permit-required monitoring and to measure 

effluent concentrations near or below criteria values where possible at a reasonable cost. If a 

Permittee knows that an alternate, less sensitive method (higher DL and QL) from 40 CFR Part 

136 is sufficient to produce measurable results in their effluent, that method may be used for 

analysis.

Pollutant & CAS No. (if 

available)

Recommende

d Analytical 

Protocol 

Detectio

n (DL)1

μg/L 

unless 

specified 

Quantitatio

n 

Level (QL) 2 

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 4500-OC/OG 0.2 mg/L

Temperature (max. 7-day 

avg.)

Analog recorder 

or Use microrecording 

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

Chlorine, Total Residual 4500 Cl G 50.0

Color SM2120 B/C/E 10 color unit

Fecal Coliform SM 

9221D/E,9222

N/A N/A
Permit No. WA-004496-2 

Page 31 of 35 

Fluoride (16984-48-8) SM4500-F E 25 100

Nitrate-Nitrite (as N) 4500-NO3- 

E/F/H

100

Nitrogen, Total Kjeldahl (as 

N)

4500-NH3-

C/E/FG

300

Ortho-Phosphate (PO4 as P) 4500- PE/PF 3 10

Phosphorus, Total (as P) 4500-PE/PF 3 10

Oil and Grease (HEM) 1664A 1,400 5,000

Salinity SM2520-B 3 PSS

Settleable Solids SM2540 -F 100

Sulfate (as mg/L SO4) SM4110-B 200

Sulfide (as mg/L S) 4500-S2F/D/E/G 200

Sulfite (as mg/L SO3) SM4500-SO3B 2000

Total dissolved solids SM2540 C 20 mg/L

Total Hardness 2340B 200 as 

CaCO3

Aluminum, Total (7429-90-5) 200.8 2.0 10

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) 200.7 12.5 50

Magnesium, Total (7439-95-

4)

200.7 10 50

Molybdenum, Total (7439-

98-7)

200.8 0.1 0.5

Manganese, Total (7439-96-

5)

200.8 0.1 0.5

Tin, Total (7440-31-5) 200.8 0.3 1.5

METALS, CYANIDE & TOTAL PHENOLS

Antimony, Total (7440-36-0) 200.8 0.3 1.0

Arsenic, Total (7440-38-2) 200.8 0.1 0.5

Beryllium, Total (7440-41-7) 200.8 0.1 0.5

Cadmium, Total (7440-43-9) 200.8 0.05 0.25

Chromium (hex) dissolved 

(18540-29-9)

SM3500-Cr EC 0.3 1.2

Chromium, Total (7440-47-3) 200.8 0.2 1.0

Copper, Total (7440-50-8) 200.8 0.4 2.0

Lead, Total (7439-92-1) 200.8 0.1 0.5

Mercury, Total (7439-97-6) 1631E 0.0002 0.0005

Nickel, Total (7440-02-0) 200.8 0.1 0.5

Selenium, Total (7782-49-2) 200.8 1.0 1.0

Silver, Total (7440-22-4) 200.8 0.04 0.2

Thallium, Total (7440-28-0) 200.8 0.09 0.36

Zinc, Total (7440-66-6) 200.8 0.5 2.5

Cyanide, Total (57-12-5) 335.4 2 10

Cyanide, Weak Acid 

Dissociable

SM4500-CN I 2 10

Phenols, Total EPA 420.1 50
Permit No. WA-004496-2 

Page 32 of 35 

DIOXIN

2,3,7,8-Tetra-ChlorodibenzoP-Dioxin (176-40-16)1613B 1.3 pg/L 5 pg/L

VOLATILE COMPOUNDS

Acrolein (107-02-8) 624 5 10

Acrylonitrile (107-13-1) 624 1.0 2.0

Benzene (71-43-2) 624 1.0 2.0

Bromoform (75-25-2) 624 1.0 2.0

Carbon tetrachloride (56-23-

5)

624/601 or 

SM6230B

1.0 2.0

Chlorobenzene (108-90-7) 624 1.0 2.0

Chloroethane (75-00-3) 624/601 1.0 2.0

2-Chloroethylvinyl Ether 

(110-75-8)

624 1.0 2.0 

Chloroform (67-66-3) 624 or 

SM6210B

1.0 2.0

Dibromochloromethane 

(124-48-1)

624 1.0 2.0

1,2-Dichlorobenzene (95-50-

1)

624 1.9 7.6

1,3-Dichlorobenzene (541-

73-1)

624 1.9 7.6

1,4-Dichlorobenzene (106-

46-7)

624 4.4 17.6

Dichlorobromomethane (75-

27-4)

624 1.0 2.0

1,1-Dichloroethane (75-34-3) 624 1.0 2.0

1,2-Dichloroethane (107-06-

2)

624 1.0 2.0

1,1-Dichloroethylene (75-35-

4)

624 1.0 2.0

1,2-Dichloropropane (78-87-

5)

624 1.0 2.0

1,3-dichloropropylene (mixed 

isomers) (542-75-6)

624 1.0 2.0

Ethylbenzene (100-41-4) 624 1.0 2.0

Methyl bromide (74-83-9) 

(Bromomethane)

624/601 5.0 10.0

Methyl chloride (74-87-3) 

(Chloromethane)

624 1.0 2.0

Methylene chloride (75-09-2) 624 5.0 10.0

1,1,2,2-Tetrachloroethane 

(79-34-5)

624 1.9 2.0

Tetrachloroethylene (127-18-

4)

624 1.0 2.0

Toulene (108-88-3) 624 1.0 2.0

1,2-Trans-Dichloroethylene 

(156-60-5) (Ethylene dichloride)

624 1.0 2.0

1,1,1-Trichloroethane (71-

55-6) 

624 1.0 2.0
Permit No. WA-004496-2 

Page 33 of 35 

1,1,2-Trichloroethane (79-

00-5)

624 1.0 2.0

Trichloroethylene (79-01-6) 624 1.0 2.0

Vinyl chloride (75-01-4) 624/SM6200B 1.0 2.0

ACID COMPOUNDS

2-Chlorophenol (95-57-8) 625 1.0 2.0

2,4-Dichlorophenol (120-83-

2)

625 0.5 1.0

2,4-Dimethylphenol (105-67-

9)

625 0.5 1.0

4,6-dinitro-o-cresol (534-52-

1) 

(2-methyl-4,6,-dinitrophenol)

625/1625B 1.0 2.0

2,4 dinitrophenol (51-28-5) 625 1.0 2.0

2-Nitrophenol (88-75-5) 625 0.5 1.0

4-nitrophenol (100-02-7) 625 0.5 1.0

Parachlorometa cresol (59-

50-7)

(4-chloro-3-methylphenol)

625 1.0 2.0

Pentachlorophenol (87-86-5) 625 0.5 1.0

Phenol (108-95-2) 625 2.0 4.0

2,4,6-Trichlorophenol (88-06-

2)

625 2.0 4.0

BASE/NEUTRAL COMPOUNDS (compounds in bold are Ecology PBTs)

Acenaphthene (83-32-9) 625 0.2 0.4

Acenaphthylene (208-96-8) 625 0.3 0.6

Anthracene (120-12-7) 625 0.3 0.6

Benzidine (92-87-5) 625 12 24

Benzyl butyl phthalate (85-

68-7)

625 0.3 0.6

Benzo(a)anthracene (56-55-

3)

625 0.3 0.6

Benzo(j)fluoranthene (205-

82-3)

625 0.5 1.0

Benzo(r,s,t)pentaphene 

(189-55-9)

625 0.5 1.0

Benzo(a)pyrene (50-32-8) 610/625 0.5 1.0

3,4-benzofluoranthene 

(Benzo(b)fluoranthene) (205-99-2)

610/625 0.8 1.6

11,12-benzofluoranthene 

(Benzo(k)fluoranthene) (207-08-9)

610/625 0.8 1.6

Benzo(ghi)Perylene (191-24-

2)

610/625 0.5 1.0

Bis(2-chloroethoxy)methane 

(111-91-1)

625 5.3 21.2

Bis(2-chloroethyl)ether (111-

44-4)

611/625 0.3 1.0

Bis(2-chloroisopropyl)ether 

(39638-32-9)

625 0.3 0.6

Bis(2-ethylhexyl)phthalate 

(117-81-7) 

625 0.1 0.5
Permit No. WA-004496-2 

Page 34 of 35 

4-Bromophenyl phenyl ether 

(101-55-3)

625 0.2 0.4

2-Chloronaphthalene (91-58-

7)

625 0.3 0.6

4-Chlorophenyl phenyl ether 

(7005-72-3)

625 0.3 0.5

Chrysene (218-01-9) 610/625 0.3 0.6

Dibenzo (a,j)acridine (224-

42-0)

610M/625M 2.5 10.0

Dibenzo (a,h)acridine (226-

36-8)

610M/625M 2.5 10.0

Dibenzo(a-h)anthracene (53-

70-3)(1,2,5,6-

dibenzanthracene)

625 0.8 1.6

Dibenzo(a,e)pyrene (192-65-

4)

610M/625M 2.5 10.0

Dibenzo(a,h)pyrene (189-64-

0)

625M 2.5 10.0

3,3-Dichlorobenzidine (91-

94-1)

605/625 0.5 1.0

Diethyl phthalate (84-66-2) 625 1.9 7.6

Dimethyl phthalate (131-11-

3)

625 1.6 6.4

Di-n-butyl phthalate (84-74-

2)

625 0.5 1.0

2,4-dinitrotoluene (121-14-2) 609/625 0.2 0.4

2,6-dinitrotoluene (606-20-2) 609/625 0.2 0.4

Di-n-octyl phthalate (117-84-

0)

625 0.3 0.6

1,2-Diphenylhydrazine (as 

Azobenzene) (122-66-7) 

1625B 5.0 20

Fluoranthene (206-44-0) 625 0.3 0.6

Fluorene (86-73-7) 625 0.3 0.6

Hexachlorobenzene (118-74-

1) 

612/625 0.3 0.6

Hexachlorobutadiene (87-68-

3)

625 0.5 1.0

Hexachlorocyclopentadiene 

(77-47-4)

1625B/625 0.5 1.0

Hexachloroethane (67-72-1) 625 0.5 1.0

Indeno(1,2,3-cd)Pyrene 

(193-39-5)

610/625 0.5 1.0

Isophorone (78-59-1) 625 0.5 1.0

3-Methyl cholanthrene (56-

49-5)

625 2.0 8.0

Naphthalene (91-20-3) 625 0.3 0.6

Nitrobenzene (98-95-3) 625 0.5 1.0

N-Nitrosodimethylamine (62-

75-9)

607/625 2.0 4.0

N-Nitrosodi-n-propylamine 

(621-64-7) 

607/625 0.5 1.0
Permit No. WA-004496-2 

Page 35 of 35 

1. Detection level (DL) or detection limit means the minimum concentration of an analyte 

(substance) that can be measured and reported with a 99% confidence that the analyte 

concentration is greater than zero as determined by the procedure given in 40 CFR part 

136, Appendix B. 

2. Quantitation Level (QL) is equivalent to EPA’s Minimum Level (ML) which is defined 

in 40 CFR Part 136 as the minimum level at which the entire GC/MS system must give 

recognizable mass spectra (background corrected) and acceptable calibration points. 

These levels were published as proposed in the Federal Register on March 28, 1997. 

N-Nitrosodiphenylamine (86-

30-6)

625 0.5 1.0

Perylene (198-55-0) 625 1.9 7.6

Phenanthrene (85-01-8) 625 0.3 0.6

Pyrene (129-00-0) 625 0.3 0.6

1,2,4-Trichlorobenzene (120-

82-1)

625 0.3 0.6

PESTICIDES/PCBs

Aldrin (309-00-2) 608 0.025 0.05

alpha-BHC (319-84-6) 608 0.025 0.05

beta-BHC (319-85-7) 608 0.025 0.05

gamma-BHC (58-89-9) 608 0.025 0.05

delta-BHC (319-86-8) 608 0.025 0.05

Chlordane (57-74-9) 608 0.025 0.05

4,4’-DDT (50-29-3) 608 0.025 0.05

4,4’-DDE (72-55-9) 608 0.025 0.0510

4,4’ DDD (72-54-8) 608 0.025 0.05

Dieldrin (60-57-1) 608 0.025 0.05

alpha-Endosulfan (959-98-8) 608 0.025 0.05

beta-Endosulfan (33213-65-

9)

608 0.025 0.05

Endosulfan Sulfate (1031-

07-8)

608 0.025 0.05

Endrin (72-20-8) 608 0.025 0.05

Endrin Aldehyde (7421-93-4) 608 0.025 0.05

Heptachlor (76-44-8) 608 0.025 0.05

Heptachlor Epoxide (1024-

57-3)

608 0.025 0.05

PCB-1242 (53469-21-9) 608 0.25 0.5

PCB-1254 (11097-69-1) 608 0.25 0.5

PCB-1221 (11104-28-2) 608 0.25 0.5

PCB-1232 (11141-16-5) 608 0.25 0.5

PCB-1248 (12672-29-6) 608 0.25 0.5

PCB-1260 (11096-82-5) 608 0.13 0.5

PCB-1016 (12674-11-2) 608 0.13 0.5

Toxaphene (8001-35-2) 608 0.24 0.5