Page 1 of 40

Permit No. WA0022772

Issuance Date: March 1, 2013

Effective Date: April 1, 2013

Expiration Date: March 31, 2018

National Pollutant Discharge Elimination System

Waste Discharge Permit No. WA0022772

State of Washington

DEPARTMENT OF ECOLOGY

Northwest Regional Office

3190 160th Avenue SE

Bellevue, WA 98008-5452

In compliance with the provisions of

The State of Washington Water Pollution Control Law

Chapter 90.48 Revised Code of Washington

and

The Federal Water Pollution Control Act

(The Clean Water Act)

Title 33 United States Code, Section 1342 et seq.

SOUTHWEST SUBURBAN SEWER DISTRICT

Salmon Creek Wastewater Treatment Plant

431 Ambaum Boulevard

Burien, WA 98166

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

Plant Location:

12550 Shorewood Drive SW

Burien, WA 98146

Receiving Water:

Puget Sound

Treatment Type:

Secondary Biological Treatment – Rotating 

Biological Contactors (RBCs)

Discharge Location:

Latitude: 47.487222

Longitude: -122.367778

Kevin C. Fitzpatrick

Water Quality Section Manager

Northwest Regional Office

Washington State Department of Ecology
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Permit No. WA0022772

Table of Contents

Summary of Permit Report Submittals ......................................................................................... 4

Special Conditions.......................................................................................................................... 5

S1. Discharge limits................................................................................................................... 5

S1.A. Effluent limits.....................................................................................................................5

S1.B. Mixing zone authorization..................................................................................................6

S2. Monitoring requirements ................................................................................................... 6

S2.A. Monitoring schedule ...........................................................................................................6

S2.B. Sampling and analytical procedures...................................................................................8

S2.C. Flow measurement, and continuous monitoring devices....................................................8

S2.D. Laboratory accreditation.....................................................................................................9

S2.E. Request for reduction in monitoring...................................................................................9

S3. Reporting and recording requirements............................................................................. 9

S3.A. Reporting ............................................................................................................................9

S3.B. Records retention ..............................................................................................................11

S3.C. Recording of results..........................................................................................................11

S3.D. Additional monitoring by the Permittee ...........................................................................11

S3.E. Reporting permit violations..............................................................................................12

S3.F. Other reporting..................................................................................................................13

S3.G. Maintaining a copy of this permit.....................................................................................14

S4. Facility loading .................................................................................................................. 14

S4.A. Design criteria...................................................................................................................14

S4.B. Plans for maintaining adequate capacity...........................................................................14

S4.C. Duty to mitigate ................................................................................................................14

S4.D. Notification of new or altered sources..............................................................................15

S4.E. Infiltration and inflow evaluation .....................................................................................15

S5. Operation and maintenance ............................................................................................. 15

S5.A. Certified operator..............................................................................................................15

S5.B. Operation and maintenance program................................................................................16

S5.C. Short-term reduction.........................................................................................................16

S5.D. Electrical power failure.....................................................................................................16

S5.E. Prevent connection of inflow............................................................................................17

S5.F. Bypass procedures ............................................................................................................17

S5.G. Operations and Maintenance (O&M) Manual ..................................................................19

S6. Pretreatment...................................................................................................................... 19

S6.A. General requirements........................................................................................................19

S6.B. Duty to enforce discharge prohibitions.............................................................................19

S6.C. Wastewater discharge permit required..............................................................................20

S6.D. Identification and reporting of existing, new, and proposed industrial users ...................21

S6.E. Industrial user survey........................................................................................................21

S7. Solid wastes........................................................................................................................ 21

S7.A. Solid waste handling.........................................................................................................21

S7.B. Leachate............................................................................................................................22
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Permit No. WA0022772

S8. Application for permit renewal or modification for facility changes........................... 22

S9. Acute toxicity ..................................................................................................................... 22

S9.A. Testing when there is no permit limit for acute toxicity...................................................22

S9.B. Sampling and reporting requirements...............................................................................22

S10. Chronic toxicity.................................................................................................................. 23

S10.A. Testing when there is no permit limit for chronic toxicity ...............................................23

S10.B. Sampling and reporting requirements...............................................................................24

General Conditions...................................................................................................................... 26

G1. Signatory requirements.................................................................................................. 26

G2. Right of inspection and entry......................................................................................... 27

G3. Permit actions.................................................................................................................. 27

G4. Reporting planned changes............................................................................................ 28

G5. Plan review required....................................................................................................... 29

G6. Compliance with other laws and statutes..................................................................... 29

G7. Transfer of this permit ................................................................................................... 29

G8. Reduced production for compliance ............................................................................. 30

G9. Removed substances ....................................................................................................... 30

G10. Duty to provide information .......................................................................................... 30

G11. Other requirements of 40 CFR...................................................................................... 30

G12. Additional monitoring .................................................................................................... 30

G13. Payment of fees................................................................................................................ 30

G14. Penalties for violating permit conditions...................................................................... 30

G15. Upset................................................................................................................................. 31

G16. Property rights................................................................................................................ 31

G17. Duty to comply ................................................................................................................ 31

G18. Toxic pollutants............................................................................................................... 31

G19. Penalties for tampering .................................................................................................. 31

G20. Compliance schedules..................................................................................................... 32

G21. Service agreement review............................................................................................... 32

Appendix A................................................................................................................................... 33
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Permit No. WA0022772

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.A Discharge Monitoring Report Monthly April 15, 2013

S3.E Reporting Permit Violations As necessary

S3.F Other Reporting As necessary

S4.B Plans for Maintaining Adequate Capacity As necessary

S4.D Notification of New or Altered Sources As necessary

S4.E Infiltration and Inflow Evaluation Annually December 31, 2013

S5.F Bypass Notification As necessary

S5.G Operations and Maintenance Manual 

Update

As necessary

S6.E Industrial User Survey Update 1/permit cycle With the application for 

permit renewal 

October 2, 2017

S8 Application for Permit Renewal 1/permit cycle October 2, 2017

S9.B Acute Toxicity Effluent Test Results with 

Permit Renewal Application

2/permit cycle Testing to occur during

January 2017 and

June 2017.

Submit reports with

renewal application.

S10.B Chronic Toxicity Effluent Test Results with 

Permit Renewal Application

2/permit cycle Testing to occur during

February 2017 and

July 2017.

Submit reports with

renewal application.

G1 Notice of Change in Authorization As necessary

G4 Reporting Planned Changes As necessary

G5 Engineering Report for Construction or 

Modification Activities

As necessary
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Permit No. WA0022772

Special Conditions

S1. Discharge limits 

S1.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, the Permittee may discharge 

municipal wastewater to the Puget Sound at the permitted location subject to 

compliance with the following limits: 

Effluent Limits: Outfall # 001

Latitude: 47.487222 Longitude: -122.367778

Parameter Average Monthly a Average Weekly b

Biochemical Oxygen

Demand (5-day) (BOD5)

30 milligrams/liter (mg/L)

2026 pounds/day (lbs/day)

85% removal of influent BOD5

45 mg/L

3039 lbs/day

Total Suspended Solids (TSS) 30 mg/L

2026 lbs/day

85% removal of influent TSS

45 mg/L

3039 lbs/day

Total Residual Chlorine 

(technology-based)

0.5 mg/L 0.75mg/L

Parameter Minimum Maximum

pH 6.0 standard units 9.0 standard units

Parameter Monthly Geometric mean Weekly Geometric mean

Fecal Coliform Bacteria c 200/100 milliliter (mL) 400/100 mL

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

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

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

discharges measured. See footnote c for fecal coliform calculations.

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

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

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

coliform calculations.

c Ecology provides directions to calculate the monthly and the weekly geometric mean in Publication No. 

04-10-020, Information Manual for Treatment Plant Operators available at: 

http://www.ecy.wa.gov/pubs/0410020.pdf
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Permit No. WA0022772

S1.B. Mixing zone authorization

Mixing zone for outfall no. 001

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

Chronic mixing zone

The mixing zone is a circle with radius of 400 feet measured from the center of 

each discharge port. The mixing zone extends from the discharge ports to the top 

of the water surface. The concentration of pollutants at the edge of the chronic 

zone must meet chronic aquatic life criteria and human health criteria.

Acute mixing zone

The acute mixing zone is a circle with radius of 40 feet measured from the center 

of each discharge port. The mixing zone extends from the discharge ports to the 

top of the water surface. The concentration of pollutants at the edge of the acute 

zone must meet acute aquatic life criteria.

Available Dilution (dilution factor)

Acute Aquatic Life Criteria 160

Chronic Aquatic Life Criteria 770

Human Health Criteria - Carcinogen 1225

Human Health Criteria - Non-carcinogen 1025

S2. Monitoring requirements

S2.A. Monitoring schedule

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

requirements specified in Appendix A. 

Parameter Units & Speciation Minimum Sampling 

Frequency

Sample Type

(1) Wastewater influent

Wastewater Influent means the raw sewage flow from the collection system into the treatment facility. 

Sample the wastewater entering the headworks of the treatment plant excluding any side-stream returns 

from inside the plant.

Biochemical Oxygen Demand 

(BOD5) 1

mg/L 2 per week 2 24-hour composite

Biochemical Oxygen Demand 

(BOD5)

lbs/day 2 per week Calculated 3

Total Suspended Solids (TSS) mg/L 2 per week 24-hour composite

Total Suspended Solids (TSS) lbs/day 2 per week Calculated

(2) Final wastewater effluent

Final Wastewater Effluent means wastewater exiting the last treatment process or operation. Typically, this 

is after or at the exit from the chlorine contact chamber or other disinfection process. The Permittee may 

take effluent samples for the BOD5 analysis before or after the disinfection process. If taken after, the 

Permittee must dechlorinate and reseed the sample.

Flow mgd Continuous 4 Metered/recorded
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Permit No. WA0022772

Parameter Units & Speciation Minimum Sampling 

Frequency

Sample Type

BOD5 mg/L 2 per week 24-hour composite 5

BOD5 lbs/day 2 per week Calculated

BOD5 % removal 6 1 per month Calculated

TSS mg/L 2 per week 24-hour composite

TSS lbs/day 2 per week Calculated

TSS % removal 1 per month Calculated

Chlorine (Total Residual) mg/L Daily Grab 7

pH 8 Standard Units Daily Grab

Fecal Coliform 9 # /100 ml 3 per week Grab

(3) Whole effluent toxicity testing – final wastewater effluent

Acute Toxicity Testing See Condition S9 for

testing requirements.

2/year in last full year 

of permit

24-hour composite

Chronic Toxicity Testing See Condition S10 for

testing requirements.

2/year in last full year 

of permit

24-hour composite

(4) Pretreatment

As specified in Special Condition S6.

(5) Effluent characterization – final wastewater effluent

Total Ammonia mg/L as N Monthly 10 24-hour composite

Total Phosphorus mg/L as P Monthly 24-hour composite

Soluble Reactive Phosphorus mg/L as P Monthly 24-hour composite

Nitrate plus Nitrite Nitrogen mg/L as N Monthly 24-hour composite

Total Kjeldahl Nitrogen (TKN) mg/L as N Monthly 24-hour composite

(6) Permit renewal application requirements – final wastewater effluent

Temperature Degrees Celsius Once each July and

once each December, 

for 3 consecutive years

Measurement

Dissolved Oxygen: mg/L 3 per permit cycle: 

 January 2014

 July 2015

 June 2016

Grab

Oil and Grease mg/L Grab

Total Dissolved Solids mg/L 24-hour composite

Total Hardness mg/L 24-hour composite

Cyanide micrograms/liter (μg/L) Grab

Total Phenolic Compounds μg/L Grab

Priority Pollutants (PP) – Total 

Metals

μg/L; nanograms (ng/L) 

for mercury

24-Hour composite

(Grab for mercury)

PP – Volatile Organic 

Compounds

μg/L Grab

PP – Acid-extractable 

Compounds 

μg/L 24-Hour composite

PP – Base-neutral Compounds μg/L 24-Hour composite

Footnotes:

1 Take effluent samples for the BOD5 analysis before or after the disinfection process. If taken after, 

dechlorinate and reseed the sample.

2 2/week means two (2) times during each calendar week and on a rotational basis throughout the 

days of the week, except weekends and holidays.

3 Calculated means figured concurrently with the respective sample, using the following formula: 

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

4 Continuous means uninterrupted except for brief lengths of time for calibration, power failure, or 

unanticipated equipment repair or maintenance. 
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Permit No. WA0022772

Parameter Units & Speciation Minimum Sampling 

Frequency

Sample Type

5 24-hour composite means a series of individual samples collected over a 24-hour period into a 

single container, and analyzed as one sample.

6 % removal = Influent concentration (mg/L) – Effluent concentration (mg/L) x 100

Influent concentration (mg/L)

Calculate the percent (%) removal of BOD5 and TSS using the above equation. 

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

8 The Permittee must report the instantaneous maximum and minimum pH daily. Do not average pH 

values. 

9 Report a numerical value for fecal coliforms following the procedures in Ecology’s Information 

Manual for Wastewater Treatment Plant Operators, Publication Number 04-10-020 available at: 

http://www.ecy.wa.gov/programs/wq/permits/guidance.html. Do not report a result as too numerous 

to count (TNTC).

10 Monthly means once every calendar month during alternate weeks.

S2.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 (or as applicable in 40 CFR subchapters N [Parts 400–471] or O [Parts 

501-503]) unless otherwise specified in this permit . Ecology may only specify

alternative methods for parameters without permit limits and for those parameters 

without an EPA approved test method in 40 CFR Part 136. 

S2.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. Calibrate continuous monitoring instruments weekly unless it can be 

demonstrated that a longer period is sufficient based on monitoring records. 

The Permittee must calibrate continuous pH measurement instruments using a 

grab sample analyzed in the lab with a pH meter calibrated with standard 

buffers and analyzed within 15 minutes of sampling.

4. Calibrate these devices at the frequency recommended by the manufacturer.
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Permit No. WA0022772

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

calibration per year.

6. Maintain calibration records for at least three years.

S2.D. Laboratory accreditation

The Permittee must ensure that all monitoring data required by Ecology for permit 

specified parameters 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. The Permittee must 

obtain accreditation for conductivity and pH if it must receive accreditation or 

registration for other parameters.

S2.E. Request for reduction in monitoring

The Permittee may request a reduction of the sampling frequency after twelve 

(12) months of monitoring. Ecology will review each request and at its discretion 

grant the request when it reissues the permit or by a permit modification.

The Permittee must:

1. Provide a written request.

2. Clearly state the parameters for which it is requesting reduced monitoring.

3. Clearly state the justification for the reduction. 

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.

S3.A. Reporting

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

Permittee must:

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

monitoring period on the electronic Discharge Monitoring Report (DMR) 

form provided by Ecology within WAWebDMR. Include data for each of the 

parameters tabulated in Special Condition S2 and as required by the form. 

Report a value for each day sampling occurred (unless specifically exempted 

in the permit) and for the summary values (when applicable) included on the 

electronic form. 

To find out more information and to sign up for WAWebDMR go to: 

http://www.ecy.wa.gov/programs/wq/permits/paris/webdmr.html .

If unable to submit electronically (for example, if you do not have an internet 

connection), the Permittee must contact Ecology to request a waiver and 

obtain instructions on how to obtain a paper copy DMR.
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Permit No. WA0022772

2. Enter the “no discharge” reporting code for an entire DMR, for a specific 

monitoring point, or for a specific parameter as appropriate, if the Permittee

did not discharge wastewater or a specific pollutant during a given monitoring 

period. 

3. Report single analytical values below detection as “less than the detection 

level (DL)” by entering < followed by the numeric value of the detection level 

(e.g. < 2.0) on the DMR. If the method used did not meet the minimum DL 

and quantitation level (QL) identified in the permit, report the actual QL and 

DL in the comments or in the location provided.

4. Report the test method used for analysis in the comments if the laboratory

used an alternative method not specified in the permit and as allowed in 

Appendix A. 

5. Calculate average values (unless otherwise specified in the permit) using:

a. The reported numeric value for all parameters measured between the 

agency-required detection value and the agency-required quantitation 

value. 

b. One-half the detection value (for values reported below detection) if the 

lab detected the parameter in another sample for the reporting period.

c. Zero (for values reported below detection) if the lab did not detect the 

parameter in another sample for the reporting period.

6. Report single-sample grouped parameters (for example priority pollutants, 

PAHs, pulp and paper chlorophenolics, TTOs) on the WAWebDMR form and 

include sample date, concentration detected, detection limit (DL) (as 

necessary), and laboratory quantitation level (QL) (as necessary). The 

Permittee must also submit an electronic PDF copy of the laboratory report

using WAWebDMR. 

If the Permittee has obtained a waiver from electronic reporting or if 

submitting prior to the compliance date, the Permittee must submit a paper 

copy of the laboratory report providing the following information: date

sampled, sample location, date of analysis, parameter name, CAS number, 

analytical method/number, detection limit (DL), laboratory quantitation level 

(QL), reporting units, and concentration detected. 

The contract laboratory reports must also include information on the chain of 

custody, QA/QC results, and documentation of accreditation for the 

parameter.

7. Ensure that DMRs are electronically submitted no later than the dates 

specified below, unless otherwise specified in this permit. 

If the Permittee has obtained a waiver, it must ensure that paper forms are 

postmarked or received by Ecology no later than the dates specified below, 

unless otherwise specified in this permit.
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Permit No. WA0022772

8. Submit DMRs for parameters with the monitoring frequencies specified in S2 

(monthly, quarterly, annual, etc.) at the reporting schedule identified below. 

The Permittee must:

a. Submit monthly DMRs by the 15th day of the following month. 

b. Submit permit renewal application monitoring data in WAWebDMR as 

required in Special Condition S2 by August 31, 2017.

9. Submit reports to Ecology online using Ecology’s electronic WAWebDMR 

submittal forms (electronic DMRs) as required above. Send paper reports to 

Ecology at:

Water Quality Permit Coordinator

Department of Ecology

Northwest Regional Office

3190 160th Avenue SE

Bellevue, WA 98008-5452

S3.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. 

S3.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.

S3.D. Additional monitoring by the Permittee

If the Permittee monitors any pollutant more frequently than required by Special 

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 unless otherwise specified by Special Condition S2.
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Permit No. WA0022772

S3.E. Reporting permit violations

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

comply with any permit condition: 

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

or otherwise stop the noncompliance and correct the problem.

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

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

a. Immediate reporting

The Permittee must immediately report to Ecology and the Department of 

Health, Shellfish Program, and the Local Health Jurisdiction (at the numbers 

listed below), all:

• Failures of the disinfection system.

• Collection system overflows.

• Plant bypasses discharging to marine surface waters.

• Any other failures of the sewage system (pipe breaks, etc.)

Northwest Regional Office 425-649-7000

Department of Health, Shellfish Program 360-236-3330 (business hours)

360-789-8962 (after business hours)

King County Health Dept. 206-296-4932

b. Twenty-four-hour reporting

The Permittee must report the following occurrences of noncompliance by 

telephone, to Ecology at 425-649-7000, within 24 hours from the time the 

Permittee becomes aware of any of the following circumstances: 

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

previously reported under immediate reporting requirements.

2. Any unanticipated bypass that causes an exceedance of an effluent limit in 

the permit (See Part S5.F, “Bypass Procedures”).

3. Any upset that causes an exceedance of an effluent limit in the permit (See 

G.15, “Upset”).

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

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

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

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

permit. 
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Permit No. WA0022772

c. Report within five days

The Permittee must also submit a written report within five days of the time 

that the Permittee becomes aware of any reportable event under subparts a or 

b, above. The report must contain:

1. A description of the noncompliance and its cause. 

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

3. The estimated time the Permittee expects the noncompliance to continue if 

not yet corrected.

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

noncompliance.

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

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

d. Waiver of written reports

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

case-by-case basis upon request if the Permittee has submitted a timely oral 

report.

e. 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 

subpart c, 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.

f. Report submittal

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

S3.F. Other reporting

a. Spills of Oil or Hazardous Materials

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

with the requirements of RCW 90.56.280 and Chapter 173-303-145. You can 

obtain further instructions at the following website: 

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

b. Failure to submit relevant or correct facts

Where the Permittee becomes aware that it failed to submit any relevant facts 

in a permit application, or submitted incorrect information in a permit 

application, or in any report to Ecology, it must submit such facts or 

information promptly.
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Permit No. WA0022772

S3.G. Maintaining a copy of this permit

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

upon request to Ecology inspectors.

S4. Facility loading

S4.A. Design criteria

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

design criteria:

Average Flow for the Maximum Month 8.1 MGD

BOD5 Influent Loading for Maximum Month 9,200 lb/day

TSS Influent Loading for Maximum Month 9,200 lb/day

S4.B. Plans for maintaining adequate capacity

a. Conditions triggering plan submittal

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

capacity to Ecology when:

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

criteria in S4.A for three consecutive months.

2. The projected plant flow or loading would reach design capacity within 

five years. 

b. Plan and schedule content

The plan and schedule must identify the actions necessary to maintain 

adequate capacity for the expected population growth and to meet the limits 

and requirements of the permit. The Permittee must consider the following 

topics and actions in its plan.

1. Analysis of the present design and proposed process modifications

2. Reduction or elimination of excessive infiltration and inflow of 

uncontaminated ground and surface water into the sewer system

3. Limits on future sewer extensions or connections or additional waste loads

4. Modification or expansion of facilities

5. Reduction of industrial or commercial flows or waste loads

Engineering documents associated with the plan must meet the requirements 

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

prior to any construction. 

S4.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.
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Permit No. WA0022772

S4.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 wastewater treatment plant is proposed which:

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

any portion of the wastewater treatment plant.

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

specifications.

c. Is 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 wastewater treatment plant’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 treatment plant, and the 

anticipated impact on the Permittee’s effluent [40 CFR 122.42(b)]. 

S4.E. Infiltration and inflow evaluation

Excessive collection system inflow and infiltration was confirmed by data 

submitted to Ecology in an October 2011 I/I Evaluation Report. The Permittee 

must therefore submit to Ecology an annual report summarizing progress made in

implementing I/I corrective measures. The intent of the annual I/I report is to 

provide a brief update on the status of projects intended to reduce I/I. The report 

must present an updated schedule for projects, identify completed projects, and 

identify changes in project priority if they were prioritized differently in the most 

recent Comprehensive Sewer Plan. The Permittee must submit the report by 

December 31, 2013, and annually thereafter.

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), which 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.

S5.A. Certified operator

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

Washington for at least a Class 3 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 2 plant must be in charge during all regularly 

scheduled shifts.
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Permit No. WA0022772

S5.B. Operation and maintenance 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. 

S5.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.

S5.D. Electrical power failure

The Permittee must ensure that adequate safeguards prevent the discharge of 

untreated wastes or wastes not treated in accordance with the requirements of this 

permit during electrical power failure at the treatment plant and/or sewage lift 

stations. Adequate safeguards include, but are not limited to, alternate power 

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

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

wastewater treatment plant. Reliability Class II requires a backup power source 

sufficient to operate all vital components and critical lighting and ventilation 

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

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

need not be operable to full levels of treatment, but must be sufficient to maintain 

the biota.
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Permit No. WA0022772

S5.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.

S5.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.

This permit authorizes a bypass if it allows 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 permit authorizes such a bypass 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.

• 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 Special Condition 

S3.E of this permit.
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Permit No. WA0022772

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

permit.

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

planned date of bypass. The notice must contain: 

• A description of the bypass and its cause. 

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

or mitigate the need for bypassing. 

• A cost-effectiveness analysis of alternatives including comparative 

resource damage assessment. 

• The minimum and maximum duration of bypass under each 

alternative.

• A recommendation as to the preferred alternative for conducting the 

bypass. 

• The projected date of bypass initiation. 

• A statement of compliance with SEPA. 

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

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

standard is anticipated. 

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

reoccurrence of the bypass.

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

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

Permittee must consider the analysis required above during preparation of 

the engineering report or facilities plan and plans and specifications and 

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

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

to analyze conditions up to and including the construction period in an 

effort to minimize or eliminate the bypass.

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.
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Permit No. WA0022772

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. 

S5.G. Operations and Maintenance (O&M) Manual

The Permittee must keep the approved Operations and Maintenance Manual 

available at the treatment plant and all operators must follow the instructions and 

procedures of this manual. Whenever the Permittee makes substantial changes or 

updates to the O&M Manual, the Permittee must submit the changes to Ecology 

for review and approval.

S6. Pretreatment

S6.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.

S6.B. Duty to enforce discharge prohibitions

1. Under federal regulations (40 CFR 403.5(a) and (b)), 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, (BOD5, etc.) 

released in a discharge at a flow rate and/or pollutant concentration which 

will cause interference with the POTW. 
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Permit No. WA0022772

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.

S6.C. Wastewater discharge permit required

The Permittee must

1. Establish a process for authorizing non-domestic wastewater discharges that 

ensures all SIUs in all tributary areas meet the applicable state waste discharge 

permit (SWDP) requirements in accordance with Chapter 90.48 RCW and 

Chapter 173-216 WAC.

2. Immediately notify Ecology of any proposed discharge of wastewater from a 

source, which may be a significant industrial user (SIU) [see fact sheet

definitions or refer to 40 CFR 403.3(t)(i)(ii)]. 

3. Require all SIUs to obtain a SWDP from Ecology prior to accepting their 

non-domestic wastewater, or require proof that Ecology has determined they 

do not require a permit. 
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Permit No. WA0022772

4. Require the documentation as described in S6.C.3 at the earliest practicable 

date as a condition of continuing to accept non-domestic wastewater 

discharges from a previously undiscovered, currently discharging and 

unpermitted SIU. 

5. Require sources of non-domestic wastewater, which do not qualify as SIUs 

but merit a degree of oversight, to apply for a SWDP and provide it a copy of 

the application and any Ecology responses.

6. Keep all records documenting that its users have met the requirements of 

S6.C.

S6.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 C of the fact sheet for definitions). 

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

proposed industrial user who may be a significant industrial user (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.

S6.E. Industrial user survey 

The Permittee must complete an industrial user survey listing all SIUs and 

potential significant industrial users (PSIUs) discharging to the POTW. The 

Permittee must submit the survey to Ecology with the application for permit 

renewal (August 31, 2017). At a minimum, the Permittee must develop the list of 

SIUs and PSIUs by means of a telephone book search, a water utility billing 

records search, and a physical reconnaissance of the service area. Information on 

PSIUs must include, at a minimum, the business name, telephone number, 

address, description of the industrial process(s), and the known wastewater 

volumes and characteristics.

S7. Solid wastes

S7.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.
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Permit No. WA0022772

S7.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. Application for permit renewal or modification for facility changes

The Permittee must submit an application for renewal of this permit by August 31, 2017. 

The Permittee must submit a paper copy and an electronic copy (preferably as a PDF). 

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

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

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

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

modifications, in the permitted facility.

S9. Acute toxicity

S9.A. Testing when there is no permit limit for acute toxicity

The Permittee must:

1. Conduct acute toxicity testing on final effluent once in January 2017 and once 

in June 2017. 

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

August 31, 2017).

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

effluent, including 100% effluent and a control.

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

Acute Toxicity Tests Species Method

Fathead minnow 96-hour 

static-renewal test 

Pimephales promelas EPA-821-R-02-012

Daphnid 48-hour static test Ceriodaphnia dubia, 

Daphnia pulex, or Daphnia 

magna

EPA-821-R-02-012

S9.B. Sampling and reporting requirements

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

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

Guidance and Whole Effluent Toxicity Test Review Criteria. Reports must 

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

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

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

report, bench sheets, and reference toxicant results.
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Permit No. WA0022772

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

testing. The Permittee must cool the samples to 0 - 6 degrees Celsius during 

collection and send them to the lab immediately upon completion. The lab 

must begin the toxicity testing as soon as possible but no later than 36 hours 

after sampling was completed.

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

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

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

Effluent Toxicity Test Review Criteria.

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

specified in the most recent versions of the EPA methods listed in Section A

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

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

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

freshly collected effluent.

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

requirements of the EPA methods listed in Section A or pristine natural water 

of sufficient quality for good control performance.

6. The Permittee must conduct whole effluent toxicity tests on an unmodified 

sample of final effluent.

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

compliance testing in order to determine dose response. In this case, the 

series must have a minimum of five effluent concentrations and a control. 

The series of concentrations must include the acute critical effluent 

concentration (ACEC). The ACEC equals 0.63% effluent.

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

tests that involve hypothesis testing must comply with the acute statistical 

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

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

with an increased number of replicates to increase the power.

S10. Chronic toxicity

S10.A. Testing when there is no permit limit for chronic toxicity

The Permittee must:

1. Conduct chronic toxicity testing on final effluent once in February 2017, and 

once in July 2017.

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

August 31, 2017).
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Permit No. WA0022772

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

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

effluent concentration (ACEC). The ACEC equals 0.63% effluent. The series 

of dilutions should also contain the CCEC of 0.13% effluent.

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

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

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

recent version of the following protocols:

Saltwater Chronic Test Species Method

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

Mysid shrimp survival and 

growth

Americamysis bahia 

(formerly Mysidopsis bahia)

EPA-821-R-02-014

S10.B. Sampling and reporting requirements

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

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

Guidance and Whole Effluent Toxicity Test Review Criteria. Reports must 

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

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

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

report, bench sheets, and reference toxicant results.

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

testing. The Permittee must cool the samples to 0 - 6 degrees Celsius during 

collection and send them to the lab immediately upon completion. The lab 

must begin the toxicity testing as soon as possible but no later than 36 hours 

after sampling was completed.

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

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

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

Effluent Toxicity Test Review Criteria.

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

specified in the most recent versions of the EPA methods listed in Section A. 

and the Ecology Publication no. WQ-R-95-80, Laboratory Guidance and 

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

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

freshly collected effluent.

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

requirements of the EPA methods listed in Section A. or pristine natural water 

of sufficient quality for good control performance.

6. The Permittee must conduct whole effluent toxicity tests on an unmodified 

sample of final effluent.
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Permit No. WA0022772

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

compliance testing in order to determine dose response. In this case, the 

series must have a minimum of five effluent concentrations and a control. 

The series of concentrations must include the CCEC and the ACEC. The 

CCEC and the ACEC may either substitute for the effluent concentrations that 

are closest to them in the dilution series or be extra effluent concentrations. 

The CCEC equals 0.13% effluent. The ACEC equals 0.63% effluent.

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

with the chronic statistical power standard of 39% as defined in WAC 

173-205-020. If the test does not meet the power standard, the Permittee must 

repeat the test on a fresh sample with an increased number of replicates to 

increase the power.
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Permit No. WA0022772

General Conditions

G1. Signatory requirements

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

certified.

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

this section, a responsible corporate officer means: 

• 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 

• 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. 

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

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

• 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.

2. 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:

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

to Ecology.

b. 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.)
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Permit No. WA0022772

3. Changes to authorization. If an authorization under paragraph G1.2, 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 G1.2, above, must be submitted to Ecology prior to or together with any 

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

4. 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:

1. 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.

2. 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.

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

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

permit.

4. 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. 

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

permit renewal application:

a. Violation of any permit term or condition.

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

c. A material change in quantity or type of waste disposal.
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Permit No. WA0022772

d. 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.

e. 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.

f. Nonpayment of fees assessed pursuant to RCW 90.48.465.

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

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

when the Permittee requests or agrees:

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

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

justified the application of different permit conditions.

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

activities which occurred after this permit issuance.

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

upon permit conditions, or requiring permit revision.

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

criteria of 40 CFR Part 122.62.

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

schedule, and the modification will not violate statutory deadlines.

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

permit.

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

a. When cause exists for termination for reasons listed in 1.a through 1.g of this 

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

appropriate.

b. 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 G7) 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 one hundred eighty (180) 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.
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Permit No. WA0022772

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 excuses 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.

1. Transfers by Modification

Except as provided in paragraph (2) 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.

2. Automatic Transfers

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

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

transfer date.

b. 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. 

c. 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.
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Permit No. WA0022772

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.

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 shall 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 may 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.
Page 31 of 40

Permit No. WA0022772

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 Special Condition S3.E.

4. The Permittee complied with any remedial measures required under S3.E 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.

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 shall, 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. 
Page 32 of 40

Permit No. WA0022772

If a conviction of a person is for a violation committed after a first conviction of such 

person under this condition, punishment shall be a fine of not more than $20,000 per day 

of violation, or 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. Service agreement review

The Permittee must submit to Ecology any proposed service agreements and proposed 

revisions or updates to existing agreements 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 as required by RCW 70.150.040(9). In the event that Ecology does not 

comment within a thirty-day (30) period, the Permittee may assume consistency and 

proceed with the service agreement or the revised/updated service agreement.
Page 33 of 40

Permit No. WA0022772

Appendix A 

LIST OF POLLUTANTS WITH ANALYTICAL METHODS, 

DETECTION LIMITS AND QUANTITATION LEVELS 

The Permittee must use the specified analytical methods, detection limits (DLs) and quantitation levels (QLs) in 

the following table for permit and application required monitoring unless:

• Another permit condition specifies other methods, detection levels, or quantitation levels.

• The method used produces measurable results in the sample and EPA has listed it as an EPA-approved 

method in 40 CFR Part 136.

If the Permittee uses an alternative method, not specified in the permit and as allowed above, it must report the 

test method, DL, and QL on the discharge monitoring report or in the required report.

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 detection limit (MDL) and a quantitation limit (QL) to Ecology with appropriate 

laboratory documentation.

When the permit requires the Permittee to measure the base neutral compounds in the list of priority pollutants, 

it must measure all of the base neutral pollutants listed in the table below. The list includes EPA required base 

neutral priority pollutants and several additional polynuclear aromatic hydrocarbons (PAHs). The Water Quality 

Program added several PAHs to the list of base neutrals below from Ecology’s Persistent Bioaccumulative 

Toxics (PBT) List. It only added those PBT parameters of interest to Appendix A that did not increase the 

overall cost of analysis unreasonably.

Ecology added this appendix to the permit in order 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.

CONVENTIONAL PARAMETERS

Pollutant & CAS No.

(if available)

Recommended 

Analytical Protocol

Detection (DL)1

μg/L unless 

specified

Quantitation

Level (QL) 2μg/L 

unless specified

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-B and 

C/D/E/G/H

20

Flow Calibrated device

Dissolved oxygen SM4500-OC/OG 0.2 mg/L

Temperature (max. 7-day avg.) Analog recorder or use micro-recording 

devices known as thermistors 0.2o C

pH SM4500-H+ B N/A N/A
Page 34 of 40

Permit No. WA0022772

NONCONVENTIONAL PARAMETERS

Pollutant & CAS No.

(if available)

Recommended 

Analytical Protocol

Detection (DL)1

μg/L unless 

specified

Quantitation

Level (QL)2 μg/L 

unless specified

Total Alkalinity SM2320-B 5 mg/L as CaCO3

Chlorine, Total Residual SM4500 Cl G 50.0

Color SM2120 B/C/E 10 color units

Fecal Coliform SM 9221E,9222 N/A Specified in method -

sample aliquot dependent

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

Nitrate + Nitrite Nitrogen (as N) SM4500-NO3- E/F/H 100

Nitrogen, Total Kjeldahl (as N) SM4500-NorgB/C and 

SM4500NH3-

B/C/D/EF/G/H

300

Soluble Reactive Phosphorus 

(as P)

SM4500- PE/PF 3 10

Phosphorus, Total (as P) SM 4500 PB followed by 

SM4500-PE/PF

3 10

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

Salinity SM2520-B 3 practical salinity units 

or scale (PSU or PSS)

Settleable Solids SM2540 -F 100

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

Sulfide (as mg/L S) SM4500-S2F/D/E/G 200

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

Total Coliform SM 9221B, 9222B, 9223B N/A Specified in method -

sample aliquot dependent

Total dissolved solids SM2540 C 20 mg/L

Total Hardness SM2340B 200 as CaCO3

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

Barium Total (7440-39-3) 200.8 0.5 2.0

BTEX (benzene +toluene + 

ethylbenzene + m,o,p xylenes)

EPA SW 846 8021/8260 1 2

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

NWTPH Dx Ecology NWTPH Dx 250 250

NWTPH Gx Ecology NWTPH Gx 250 250

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

Titanium, Total (7440-32-6) 200.8 0.5 2.5
Page 35 of 40

Permit No. WA0022772

PRIORITY POLLUTANTS

Pollutant & CAS No.

(if available)

Recommended 

Analytical Protocol

Detection (DL)1

μg/L unless 

specified

Quantitation

Level (QL) 2μg/L 

unless specified

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 5 10

Cyanide, Weak Acid Dissociable SM4500-CN I 5 10

Cyanide, Free Amenable to 

Chlorination (Available Cyanide)

SM4500-CN G 5 10

Phenols, Total EPA 420.1 50

Pollutant & CAS No.

(if available)

Recommended 

Analytical Protocol

Detection (DL)1

μg/L unless 

specified

Quantitation

Level (QL) 2μg/L 

unless specified

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
Page 36 of 40

Permit No. WA0022772

Pollutant & CAS No.

(if available)

Recommended 

Analytical Protocol

Detection (DL)1

μg/L unless 

specified

Quantitation

Level (QL) 2 μg/L 

unless specified

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-dichloropropene (mixed 

isomers)

(1,2-dichloropropylene) (542-75-6) 3

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

Toluene (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

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
Page 37 of 40

Permit No. WA0022772

Pollutant & CAS No.

(if available)

Recommended 

Analytical Protocol

Detection (DL)1

μg/L unless 

specified

Quantitation

Level (QL) 2μg/L 

unless specified

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(b)fluoranthene

(3,4-benzofluoranthene) (205-99-2) 4

610/625 0.8 1.6

Benzo(j)fluoranthene (205-82-3)4 625 0.5 1.0

Benzo(k)fluoranthene 

(11,12-benzofluoranthene) (207-08-9) 4

610/625 0.8 1.6

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

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

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,h)acridine (226-36-8) 610M/625M 2.5 10.0

Dibenzo (a,j)acridine (224-42-0) 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
Page 38 of 40

Permit No. WA0022772

Pollutant & CAS No.

(if available)

Recommended 

Analytical Protocol

Detection (DL)1

μg/L unless 

specified

Quantitation

Level (QL) 2 μg/L 

unless specified

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

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

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

Pollutant & CAS No.

(if available)

Recommended 

Analytical Protocol

Detection (DL)1

μg/L unless 

specified

Quantitation

Level (QL) 2 μg/L 

unless specified

DIOXIN

2,3,7,8-Tetra-Chlorodibenzo-PDioxin (176-40-16) (2,3,7,8 TCDD)1613B 1.3 pg/L 5 pg/L

Pollutant & CAS No.

(if available)

Recommended 

Analytical Protocol

Detection (DL)1

μg/L unless 

specified

Quantitation

Level (QL) 2μg/L 

unless specified

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
Page 39 of 40

Permit No. WA0022772

Pollutant & CAS No.

(if available)

Recommended 

Analytical Protocol

Detection (DL)1

μg/L unless 

specified

Quantitation

Level (QL) 2μg/L 

unless specified

PESTICIDES/PCBs

Chlordane (57-74-9) 5 608 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) 6 608 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) 6 608 0.13 0.5

Toxaphene (8001-35-2) 608 0.24 0.5

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) also known as Minimum Level of Quantitation (ML) – The lowest level at 

which the entire analytical system must give a recognizable signal and acceptable calibration point for 

the analyte. It is equivalent to the concentration of the lowest calibration standard, assuming that the lab 

has used all method-specified sample weights, volumes, and cleanup procedures. The QL is calculated 

by multiplying the MDL by 3.18 and rounding the result to the number nearest to (1, 2, or 5) x 10n

, 

where n is an integer. (64 FR 30417). 

ALSO GIVEN AS: 

The smallest detectable concentration of analyte greater than the Detection Limit (DL) where the 

accuracy (precision & bias) achieves the objectives of the intended purpose. (Report of the Federal 

Advisory Committee on Detection and Quantitation Approaches and Uses in Clean Water Act Programs 

Submitted to the US Environmental Protection Agency December 2007).

3. NWTPH Dx -

Northwest Total Petroleum Hydrocarbons Diesel Extended Range – see 

http://www.ecy.wa.gov/biblio/97602.html
Page 40 of 40

Permit No. WA0022772

4. NWTPH Gx - Northwest Total Petroleum Hydrocarbons Gasoline Extended Range – see 

http://www.ecy.wa.gov/biblio/97602.html

5. 1, 3-dichloroproylene (mixed isomers) You may report this parameter as two separate parameters: cis-1, 

3-dichlorpropropene (10061-01-5) and trans-1, 3-dichloropropene (10061-02-6). 

6. Total Benzofluoranthenes - Because Benzo(b)fluoranthene, Benzo(j)fluoranthene and 

Benzo(k)fluoranthene co-elute you may report these three isomers as total benzofluoranthenes.

7. Chlordane – You may report alpha-chlordane (5103-71-9) and gamma-chlordane (5103-74-2) in place 

of chlordane (57-74-9). If you report alpha and gamma-chlordane, the DL/PQLs that apply are

0.025/0.050.

8. PCB 1016 & PCB 1242 – You may report these two PCB compounds as one parameter called PCB 

1016/1242.