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 S pecial 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 EcologyPermit No. WA-004496-2 Page 2 of 35



### 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. LeachatePermit No. WA-004496-2 Page 3 of 35

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

.................................................. ................................................... ..............................30Permit No. WA-004496-2 Page 4 of 35

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, 2 010
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 nece ssary 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, 2 011
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 necessaryPermit No. WA-004496-2 Page 5 of 35



### SPECIAL CONDITIONS

In this permit, the word “must” denotes an action t hat 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 pe rmit 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 i dentified 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 al lowable average of daily discharges over a calendar month. To calculate the discharge value t o compare to the limit, you add the value of each daily discharge measured during a calendar mon th 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 highe st 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 “da ily 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 ca lculate 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 Permi ttee must report the instantaneous maximum and minimum pH monthly. Do not average pH values.Permit No. WA-004496-2 Page 6 of 35

B. Mixing Zone Authorization

The following paragraphs define the maximum boundar ies or flow-volume restriction of the mixing zones:

The chronic mixing zone shall extend no more than 3 30 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 alt ernative methods included in 40 CFR Part 136 if the DL and QL are equivalent to tho se specified in Appendix A or if the alternative method’s DL and QL are low enough t o detect the parameter:

Parameter Units Minimum Sampling Frequency Sample Type

(1) Wastewater Influent
Wastewater Influent means the raw sewage flow. Sam ple the wastewater entering the headworks of the treatment plant excluding any side -stream returns from inside the plant.

Flow MGD Daily Continuous

measurement b

BOD 5 mg/L 2/week 24 hour composite c

BOD 5 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 (NH 3 -N) mg/L 2/week 24 hour composite c

Total Phosphorus mg/L 2/month on alternate

weeks 24 hour composite cPermit No. WA-004496-2 Page 7 of 35

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 an alysis before or after the disinfection process. If taken after, dechlorinate if appropria te and reseed the sample.

Flow MGD Daily Continuous

measurement b

BOD 5 mg/L 2/week 24 hour composite c

BOD 5 lbs/day 2/week 24 hour composite c

BOD 5 % 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 (NH 3 -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.3Permit No. WA-004496-2 Page 8 of 35

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-h our 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 ve rify 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 testi ng with the discharge monitoring report.

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

b Continuous means uninterrupted except for brief len gths of time for calibration, for power failure, or for unanticipated equipment repair or m aintenance.

c 24-hour composite means a series of individual samp les collected over a 24-hour period into a single container, and analyzed as one sample.

d Calculate the Percent (%) removal of BOD and TSS us ing the following algorithm (concentrations in mg/L): (Average Monthly Influent Concentration - Average Monthly Effluent Concentration)/Average Monthly Influent Co ncentration.

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

f 3/week means three (3) times during each calendar w eek 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 specif ied in attachment A.Permit No. WA-004496-2 Page 9 of 35

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 m easured between the agencyrequired detection value and the agency-required qu antitation value.

• For values reported below detection, use one-half t he detection value if the lab detected the parameter in another sample for the re porting period.

• For values reported below detection, use zero if th e lab did not detect the parameter in another sample for the reporting period.
If the Permittee is unable to obtain the required D L 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 require ments 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 condition s that may affect effluent quality.

Sampling and analytical methods used to meet the m onitoring 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 Devi ces

The Permittee must:

1. Select and use appropriate flow measurement and con tinuous monitoring devices and methods consistent with accepted scientific pra ctices.

2. Install, calibrate, and maintain these devices to e nsure the accuracy of the measurements is consistent with the accepted indust ry standard and the manufacturer’s recommendation for that type of devi ce.

3. If the Permittee uses micro-recording temperature d evices known as thermistors it must calibrate the devices using protocols from Eco logy’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 freq uency of at least one calibration per year.

5. Maintain calibration records for at least three yea rs.Permit No. WA-004496-2 Page 10 of 35

D. Laboratory Accreditation

The Permittee must ensure that all monitoring data required by Ecology is prepared by a laboratory registered or accredited under the provi sions of chapter 173-50 WAC, Accreditation of Environmental Laboratories. Flow, temperature, settleable solids, conductivity, pH, and internal process control para meters 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 i s a violation of the terms and conditions of this permit.

A. Reporting

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

must:

1. Submit monitoring results each month.

2. Summarize, report, and submit monitoring data obtai ned 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 facilit y was discharging. If the facility did not discharge during a given monitorin g period, submit the form as required with the words "NO DISCHARGE" entered in p lace 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 monit oring period, unless otherwise specified in this permit.

5. Submit priority pollutant analysis data no later th an 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 99205-1295Permit 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 locat ion, date of analysis, parameter name, CAS number, analytical method/number, method detection limit (MDL), laboratory practical quantitation limit (PQL), repo rting 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 monitorin g information for a minimum of three (3) years. Such information must include all calib ration and maintenance records and all original recordings for continuous monitoring i nstrumentation, copies of all reports required by this permit, and records of all data us ed to complete the application for this permit. The Permittee must extend this period of re tention during the course of any unresolved litigation regarding the discharge of po llutants by the Permittee or when requested by Ecology.

C. Recording of Results

For each measurement or sample taken, the Permitte e 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 measur ement.

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 frequ ently 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 clea nup unauthorized discharges or otherwise stop the noncompliance and correct the pr oblem.

b. If applicable, immediately repeat sampling and anal ysis. 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 disinf ection system immediately to the Department of Ecology's Regional Office 24-hr. numb er listed below:

Eastern Regional Office 509-329-3400

The Permittee must report any failure of the disinf ection system, any collection system overflows, or any plant bypass discharging t o 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 liste d 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 h ours from the time the Permittee becomes aware of any of the following cir cumstances:

a. Any noncompliance that may endanger health or th e 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 instantaneou s maximum discharge limitation for any of the pollutants in Section S1. A of this permit.

e. Any overflow prior to the treatment works, wheth er 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 submissio n within five days of the time that the Permittee becomes aware of any event requi red to be reported under subparts 1 or 2, above. The written submission mus t contain:

a. A description of the noncompliance and its cause

. b. The period of noncompliance, including exact dat es 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 su bpart 3, above, on a case-by-case basis upon request if a timely oral re port has been received.

5. All Other Permit Violation Reporting

The Permittee must report all permit violations, wh ich do not require immediate or within 24 hours reporting, when it submits monitori ng reports for S3.A ("Reporting"). The reports must contain the inform ation listed in paragraph E.3, above. Compliance with these requirements does not relieve the Permittee from responsibility to maintain continuous compliance wi th 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 li sted in S3.

F. Maintaining a Copy of This Permit

The Permittee must keep a copy of this permit at th e facility and make it available upon request to Ecology inspectors.

S4. FACILITY LOADING

A. Design Criteria

The flows or waste loads for the permitted facilit y 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

BOD 5 – Average Annual (1,000 lbs/day) TBD

BOD 5 – 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) TBDPermit No. WA-004496-2 Page 14 of 35

B. Plans for Maintaining Adequate Capacity

See section S8, Compliance Schedule.

C. Duty to Mitigate

The Permittee must take all reasonable steps to mi nimize 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 a n existing discharge into the POTW is proposed which:

a. Would interfere with the operation of, or exceed th e design capacity of, any portion of the POTW;

b. Is not part of an approved general sewer plan or ap proved 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 loa d, the quality and volume of effluent to be discharged to the POTW, and the anti cipated impact on the Permittee’s effluent [40 CFR 122.42(b)].

S5. OPERATION AND MAINTENANCE

The Permittee must at all times properly operate an d maintain all facilities and systems of treatment and control (and related appurtenances) t hat are installed to achieve compliance with the terms and conditions of this permit. Prop er operation and maintenance also includes keeping a daily operation logbook (paper o r electronic), adequate laboratory controls, and appropriate quality assurance procedu res. This provision of the permit requires the Permittee to operate backup or auxilia ry facilities or similar systems only when the operation is necessary to achieve compliance wi th the conditions of this permit.

A. Certified Operator

This permitted facility must be operated by an ope rator certified by the state of Washington for at least a Class III plant. This op erator must be in responsible charge of the day-to-day operation of the wastewater treatmen t 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 pro gram for the entire sewage

system.

2. Keep maintenance records on all major electrical an d mechanical components of the treatment plant, as well as the sewage system a nd 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 a t all times.

C. Short-term Reduction

The Permittee must schedule any facility maintenan ce, which might require interruption of wastewater treatment and degrade effluent qualit y, 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 lev el of treatment that would cause a violation of permit discharge limits on a short-ter m 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: altern ate power sources, standby generator(s), or retention of inadequately treated wastes.

For Reliability Class II - The Permittee must maint ain Reliability Class II (EPA 430/9- 74-001) at the wastewater treatment plant, Reliabil ity Class II requires a backup power source sufficient to operate all vital components a nd critical lighting and ventilation during peak wastewater flow conditions. Vital comp onents used to support the secondary processes (i.e., mechanical aerators or a eration basin air compressors) need not be operable to full levels of treatment, but mu st 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 ordi nances and not allow the connection of inflow (roof drains, foundation drains, etc.) to th e sanitary sewer system.

F. Bypass Procedures

This permit prohibits a bypass which is the intent ional diversion of waste streams from any portion of a treatment facility. Ecology may t ake 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 Potent ial to Cause Violation of

Permit Limits or Conditions.

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

cause violations of limits or other conditions of t his 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 Res ults in Noncompliance of this

Permit.

This bypass is permitted only if:

a. Bypass is unavoidable to prevent loss of life, pers onal injury, or severe property damage. “Severe property damage” means sub stantial physical damage to property, damage to the treatment facilit ies which would cause them to become inoperable, or substantial and permanent loss of natural resources which can reasonably be expected to occur in the ab sence 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 down time, but not if the Permittee should have installed adequate backup equ ipment in the exercise of reasonable engineering judgment to prevent a byp ass.

• Transport of untreated wastes to another treatment facility or preventative maintenance), or transport of untreated wastes to a nother treatment facility.

c. Ecology is properly notified of the bypass as requi red in condition S3E of this permit.

3. If bypass is anticipated and has the potential to r esult 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 e liminate, reduce, or mitigate the need for bypassing.

• A cost-effectiveness analysis of alternatives inclu ding comparative resource damage assessment.

• The minimum and maximum duration of bypass under ea ch alternative.

• A recommendation as to the preferred alternative fo r conducting the bypass.

• The projected date of bypass initiation.

• A statement of compliance with SEPA.

• A request for modification of water quality standar ds as provided for in WAC 173-201A-410, if an exceedance of any water qua lity standard is anticipated.

• Details of the steps taken or planned to reduce, el iminate, and prevent reoccurrence of the bypass.

b. For probable construction bypasses, the Permittee m ust notify Ecology of the need to bypass as early in the planning process as possible. The Permittee must consider the analysis required above during pr eparation of the engineering report or facilities plan and plans and specifications and must include these to the extent practical. In cases wh ere the Permittee determines the probable need to bypass early, the Permittee mu st continue to analyze conditions up to and including the construction per iod in an effort to minimize or eliminate the bypass.

c. Ecology will consider the following prior to issuin g 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 th is permit.

• If feasible alternatives to bypass exist, such as t he 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 t o minimize adverse effects on the public and the environment.

After consideration of the above and the adverse ef fects 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 app rove 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 substanti al changes or updates to the O&M Manual whenever it incorporates them into the m anual.

3. Keep the approved O&M Manual at the permitted facil ity.

4. Follow the instructions and procedures of this manu al.

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 r egulations that the Environmental Protection Agency (U.S. EPA) may promulgate under S ection 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 autho rize or knowingly allow the discharge of any pollutants into its POTW which may be reasonably expected to cause pass through or interference, or which otherw ise 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 flas hpoint of less than 140 degrees Fahrenheit or 60 degrees Centigrade using t he test methods specified in 40 CFR 261.21).

b. Pollutants which will cause corrosive structural da mage to the POTW, but in no case discharges with pH lower than 5.0, or great er than 11.0 standard units, unless the works are specifically designed to accom modate such discharges.

c. Solid or viscous pollutants in amounts that could c ause obstruction to the flow in sewers or otherwise interfere with the operation of the POTW.

d. Any pollutant, including oxygen demanding pollutant s, (BOD, etc.) released in a discharge at a flow rate and/or pollutant concent ration which will cause

interference with the POTW.Permit No. WA-004496-2 Page 19 of 35

e. Petroleum oil, non-biodegradable cutting oil, or pr oducts of mineral origin in amounts that will cause interference or pass throug h.

f. Pollutants which result in the presence of toxic ga ses, 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 activi ty 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 (1 04 degrees Fahrenheit) unless Ecology, upon request of the Permittee, appr oves, in writing, alternate temperature limits.

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

Permittee.

i. Wastewaters prohibited to be discharged to the POTW by the Dangerous Waste Regulations (chapter 173-303 WAC), unless aut horized under the Domestic Sewage Exclusion (WAC 173-303-071).

3. The Permittee must also not allow the following dis charges 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 hydra ulic loading, which do not require treatment, or would not be afforded a signi ficant 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 enforce ment action to promptly curtail any such discharge.

C. Wastewater Discharge Permit Required

The Permittee must require all non-domestic discha rges to apply for a permit, and may not allow any significant industrial users (SIUs) t o discharge wastewater to the Permittee's sewer system until such user has receiv ed a wastewater discharge permit from Ecology in accordance with chapter 90.48 RCW a nd chapter 173-216 WAC.

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

1. The Permittee must take continuous, routine measure s to identify all existing, new, and proposed SIUs and potential significant industr ial users (PSIUs) discharging or proposing to discharge to the Permittee's sewer sys tem (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 mu st 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 s end 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 SI U, 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 Dep artment, reevaluate and update their local limits in order to prevent p ass through or interference.

If Ecology determines that any pollutant present c auses 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 a ny 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 w ater.

B. Leachate

The Permittee must not allow leachate from its sol id waste material to enter state waters without providing all known, available and reasonab le methods of treatment, nor allow

such leachate to cause violations of the State Surf ace Water Quality Standards, Chapter 173-201A WAC, or the State Ground Water Quality Sta ndards, Chapter 173-200 WAC. The Permittee must apply for a permit or permit mod ification 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 curre ntly exist and if necessary recommend upgrades appropriate for the wastewater facilities to provide 20 years of additional service to the community. The engineering report m ust include a Tier II analysis demonstrating that accommodating an additional 20 y ears the hydraulic and organic loading capacity will not cause measurable degradat ion 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 requirement s 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 re claimed water as defined in RCW

90.46.010.

S9. APPLICATION FOR PERMIT RENEWAL

The Permittee must submit an application for renewa l 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 submit ted to Ecology must be signed and

certified.

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

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

(i) A president, secretary, treasurer, or vice-pre sident of the corporation in charge of a principal business function, or any other pers on who performs similar policy or decision making functions for the corpora tion, or

(ii) The manager of one or more manufacturing, pro duction, or operating facilities, provided, the manager is authorized to make managem ent decisions which govern the operation of the regulated facility incl uding having the explicit or implicit duty of making major capital investment re commendations, and initiating and directing other comprehensive measur es to assure long-term environmental compliance with environmental laws an d regulations; the manager can ensure that the necessary systems are establish ed or actions taken to gather complete and accurate information for permit applic ation 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 part ner.

3. In the case of sole proprietorship, by the prop rietor.

4. In the case of a municipal, state, or other pub lic facility, by either a principal executive officer or ranking elected official.

Applications for permits for domestic wastewater fa cilities 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 in formation requested by Ecology must be signed by a person described above or by a duly aut horized representative of that person. A person is a duly authorized representati ve 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 res ponsibility, or an individual or position having overall responsibility for environm ental matters. (A duly authorized representative may thus be either a name d individual or any individual occupying a named position.)Permit No. WA-004496-2 Page 23 of 35

C. Changes to authorization. If an authorization u nder 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 sati sfying the requirements of paragraph B.2, above, must be submitted to Ecology prior to o r together with any reports, information, or applications to be signed by an aut horized 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 sup ervision in accordance with a system designed to assure that qu alified personnel properly gathered and evaluated the infor mation submitted. Based on my inquiry of the person or pe rsons who manage the system or those persons directly respons ible for gathering information, the information submitted is , to the best of my knowledge and belief, true, accurate, and comple te. I am aware that there are significant penalties for subm itting false information, including the possibility of fine and imprisonment for knowing violations.”

G2. RIGHT OF INSPECTION AND ENTRY

The Permittee must allow an authorized representati ve of Ecology, upon the presentation of credentials and such other documents as may be requ ired 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 operatio ns regulated or required under this permit.

D. To sample or monitor, at reasonable times, any subs tances or parameters at any location for purposes of assuring permit compliance or as ot herwise 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 permi t 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 disp osal.

4. A determination that the permitted activity endang ers human health or the environment, or contributes to water quality standa rds violations and can only be regulated to acceptable levels by permit modificati on or termination.

5. A change in any condition that requires either a t emporary or permanent reduction, or elimination of any discharge or sludge use or di sposal practice controlled by the permit.

6. Nonpayment of fees assessed pursuant to RCW 90.48.4 65.

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 r evocation 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 condi tions.

3. Material and substantial alterations or additions t o the permitted facility or activities which occurred after this permit issuanc e.

4. Promulgation of new or amended standards or regulat ions having a direct bearing upon permit conditions, or requiring permit revisio n.

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 m odification of a compliance schedule, and the modification will not violate sta tutory deadlines.

7. Incorporation of an approved local pretreatment pro gram into a municipality’s permit.

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

1. When cause exists for termination for reasons liste d in A1 through A7 of this section, and Ecology determines that modification o r revocation and reissuance is appropriate.Permit No. WA-004496-2 Page 25 of 35Permit No. WA-004496-2 Page 26 of 35

2. When Ecology has received notification of a propose d transfer of the permit. A permit may also be modified to reflect a transfer a fter 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 upo n the request of the new Permittee.

G4. REPORTING PLANNED CHANGES

The Permittee must, as soon as possible, but no lat er 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 proces s 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 increas e in quantity of pollutants discharged; or 3) a significant change in the Permittee’s sludge u se or disposal practices. Following such notice, and the submittal of a new application or s upplement 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 specif y 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 thi s permit constitutes a violation.

G5. PLAN REVIEW REQUIRED

Prior to constructing or modifying any wastewater c ontrol facilities, an engineering report and detailed plans and specifications must be submi tted to Ecology for approval in accordance with chapter 173-240 WAC. Engineering r eports, 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. Faci lities 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 excusin g the Permittee from compliance with any applicable federal, state, or local statutes, o rdinances, 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 su cceeding 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 per mit may be transferred by the Permittee to a new owner or operator only if this p ermit 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 incorp orate 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 n ew 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 respo nsibility, 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 per mit. A modification under this subparagraph may also be minor modification under 4 0 CFR 122.63. If this notice is not received, the transfer is effective on the d ate 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 o f 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 m ust not be resuspended or reintroduced to the final effluent stream for discharge to state wa ters.

G10. DUTY TO PROVIDE INFORMATION

The Permittee must submit to Ecology, within a reas onable time, all information which Ecology may request to determine whether cause exis ts for modifying, revoking and reissuing, or terminating this permit or to determi ne 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 requireme nts in addition to those contained in this permit by administrative order or permit modif ication.Permit No. WA-004496-2 Page 28 of 35

G13. PAYMENT OF FEES

The Permittee must submit payment of fees associate d with this permit as assessed by Ecology.

G14. PENALTIES FOR VIOLATING PERMIT CONDITIONS

Any person who is found guilty of willfully violati ng the terms and conditions of this permit is deemed guilty of a crime, and upon conviction th ereof must be punished by a fine of up to ten thousand dollars ($10,000) and costs of prosecu tion, or by imprisonment in the discretion of the court. Each day upon which a wil lful 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 con tinuing 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 permi t 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 maintenanc e, or careless or improper operation.

An upset constitutes an affirmative defense to an a ction 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 ide ntify the cause(s) of the upset; 2) the permitted facility was being properly operat ed at the time of the upset; 3) the Permittee submitted notice of the upset as r equired in Condition S3.E; and 4) the Permittee complied with any remedial measure s 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 th is 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 m odification; or denial of a permit renewal application.

G18. TOXIC POLLUTANTS

The Permittee must comply with effluent standards o r prohibitions established 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 prohi bitions, 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 fa lsifies, 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 fi rst conviction of such person under this condition, punishment must be a fine of not more th an $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 o f this permit must be submitted no later than fourteen (14) days following each schedu le date.

G21. CONTRACT REVIEW

The Permittee must submit to Ecology any proposed c ontract for the operation of any wastewater treatment facility covered by this permi t. The review is to ensure consistency with chapters 90.46 and 90.48 RCW. In the event th at Ecology does not comment within a thirty (30)-day period, the Permittee may assume co nsistency 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 (PRIORIT Y POLLUTANTS)

AND SOME ECOLOGY PRIORITY TOXIC CHEMICALS (PBTs)

The following table specifies analytical methods an d 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 c ompounds 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 pe rmit-required monitoring and to measure

effluent concentrations near or below criteria valu es where possible at a reasonable cost. If a Permittee knows that an alternate, less sensitive m ethod (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/APermit 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 (PO 4 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 SO 4 ) SM4110-B 200 Sulfide (as mg/L S) 4500-S 2 F/D/E/G 200 Sulfite (as mg/L SO 3 ) 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 50Permit 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 2.0Permit 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 0.5Permit 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 1.0Permit 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 th e entire GC/MS system must give recognizable mass spectra (background corrected) an d acceptable calibration points. These levels were published as proposed in the Fede ral 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 0.05 10
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