Issuance Date: April 19th. 2006 Effective Date: May 1st, 2006 Expiration Date: May 1st, 2011 Modification Date: May 25, 2006 NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM WASTE DISCHARGE PERMIT No. WA-000076-1

State ofWashington DEPARTMENT OF ECOLOGY Olympia, Washington 98504-8711 In compliance withthe provisions of The State ofWashington Water Pollution Control Law Chapter 90.48 Revised Code ofWashington and The Federal WaterPollution Control Act (The CleanWater Act) Title 33 United States Code, Section 1251 et seq.

Tesoro Refining and Marketing Company

· FacilityLocation:

WestMarch Point Road Anacortes, Washington

WaterBodyID No.: WA-03-0020 Industry Type: Petroleum Refinery POBox 700 Anacortes, Washington 98221
Receiving Water: Fidalgo Bay

Discharge Location:

001: Lat 48°30' 30" N, Lon 122°34' 00" W 002: Lat 48°29' 30" N, Lon 122°34' 30" W 003: Lat48°30' 00" N, Lon 122°33' 41" W 004: Lat 48°29' 25" N, Lon 122°34' 30" W

### Page 3 of43 PermitNo. WA-000076-1
G5. PLAN REVIEW REQUIRED----------------·--------------------------------------------------------------- 34 G6. COMPLIANCE WITH OTHER LAWS AND STATUTES------------------------------------------- 34 G7. DUTY TO REAPPLY·······------·--··················------------------------------------------------------- 34 G8. TRANSFER OFTHIS PERMIT

--------------------------------------------------------------------------- 34 G9. REDUCED PRODUCTION FOR COMPLIANCE----------------------------------------------------- 35 G10. REMOVED SUBSTANCES -------------------------------------------------------------------------------·· 35 G11. DUTY TO PROVIDE INFORMATION------------------------------------------------------------------ 35 G12. OTHERREQUIREMENTS OF 40 CFR

----------------------------------------------------------------- 35 G13. ADDITI0 NAL M0 NITORING

---------------------------------------------------------------------------- 35 G14. PAYMENT 0 F FEES----------------------------------------------------------------------------------------- 35 G15. PENALTIES FORVIOLATING PERMIT CONDITIONS------------------------------------------- 35 G16. UPSET ----------------------------------------------------------------------·------------------------------------ 36 G17. PROPERTY RIGHTS

---------------------------------------------------------------------------------------- 36 G18. DUTY TO COMPLY

----------------------------------------------------------------------------------------- 36 G19. TOXIC POLLUTANTS

-------------------------------------------------------------------------------------- 36 G20. PENALTIES FORTAMPERING-------------------------------------------------------------------------- 37 G21. REPORTING ANTICIPATED N0 N-COMPLIANCE

------------------------------------------------ 3 7 G22. REPORTING OTHERINFORMATION----------------------------------------------------------------- 3 7 G23. REPORTING REQUIREMENTS APPLICABLE TO EXISTING MANUFACTURING, COMMERCIAL, MINING, AND SILVICULTURAL DISCHARGERS-------------------------- 37 G24. COMPLIANCE SCHEDULES

----------------------------------------------------------------------------- 38

### Page 4 of43 PermitNo. WA-000076-1 SUMMARY OF PERMIT REPORT SUBMITTALS Refer

### to the Special and General Conditions ofthis permit for additional submittal requirements.

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....·.····· ···············••·••·· (·•<•)•·•••> )\.• ······························ ······· Sl.D. Storm water I Emergency As necessary Verbal notification prior to Overflow Discharge Notification orwithin 24 hours ofthe and Monitoring (Outfall 002, discharge event I send Outfall 003, Outfall 004) written report with the subsequentDMR S3.A. Discharge Monitoring Report Monthly 15th day following each (DMR) month S3.D. Additional Monitoring bythe as necessary with the discharge Permittee monitoringreport S3.E. Noncompliance Notification- as necessary Within 24 hrs of discovery Verbal Report S3.E. Noncompliance Notification- as necessary Within 5 days for bypasses Written Report orupsets, otherwise with subsequentDMR S3.F. Other Noncompliance Reporting. as necessary With subsequentDMR

S3.G. Reporting

- ShellfishProtection

- As necessary Immediate verbal unauthorized sanitary discharges notification to Ecology arid the Health department S4.A. Treatment System Operating Plan 1/permit cycle November 2, 2010 SS.A. Engineering Report

- analysis Once November 2, 2010 update SS.B. Flow Measurement engineering 1lpermit cycle January 31 8\2007 report S7 Acute ToxicityReport 1/permit cycle November 2, 2010 S8 Chronic Toxicity Report 1/permit cycle November 2, 2010 S9. Outfall Evaluation Report 1/permit cycle November 2, 2010 S10.A. Pollution PreventionPlan Update Once May 18\ 2007 S10.C. Pollution PreventionPlan- Storm 21year (wet and dry Reported with Pollution water Inspections season) Prevention Plan progress report beginning May 1st, 2009 S10.D. Pollution Prevention Plan Every 2 years BeginningMay 1st, 2009 Biennial Progress ReportSll

Sll

Sll

S12

S14 S15 G17. Standard Construction Stormwater PollutionPrevention Plan (SWPP) for projects from 1-5 acres 1/permit cycle

Construction Stormwaterprojects As necessary from 1 - 5 acres project details Construction Stormwater.projects As necessary greater than 5 acres project details PriorityPollutant TestingData annually Report Submittal Mercury Prevention Plan Once Dioxin/AKART Report Once Application for permit renewal 1/permit cycle 

### Page 5 of43 PermitNo. WA-000076-1

September 1st, 2006

At least 90 days priorto start ofconstruction At least 90 days priorto start ofconstruction November 1st, 2006 and every 12 months thereafter. May 1st, 2007 May 1st, 2009 November 2, 2010**.~-** Page6of43 PermitNo. WA-000076-1 SPECIAL CONDITIONS
S1. EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS

A. Process Wastewater Limitations and Monitoring Requirements (Outfall 001) All discharges and activities authorized bythis permit shall be consistent withthe terms apd conditions ofthis permit. The discharge ofany ofthe following pollutants more frequently than, or at a level in excess of, that identified and authorized bythis permit shall constitute a violation ofthe terms and conditions ofthis permit. Beginning onthe effective date ofthis permit and lasting throughthe expiration date, the Permittee is authorized to discharge treated effluent at the permitted location subject to complying with the following limitations:

Chemical Oxygen lbs/day 4900 9500 7/7 24 hr comp. Demand Total Suspended lbs/day 560 890 5/7

. 24hr comp. Solids Oil and Grease lbs/day 210 380 5/7 c,d Grab Oil and Grease mg/1 The concentration ofoil and grease irithe 5/7 c,d Grab discharge shall at no time exceed 15 mg/1, and shall not exceed 10 mg/1 more than three days per month. Phenolic lbs/day 4.6 9.5 1/7 c 24 hrcomp. Compounds Mercury ·ug/1 1.8 3.6 1/30 c Grab AmmoniaasN lbs/day 450 1010 1/7 c 24 hrcomp. Sulfide lbs/day 3.8 8.4 1/30 c Grab Hexavalent mg/1 0.050 Semi-annual 24hrcomp. ChromiumPage 7 of43 PermitNo. WA-000076-1

·.···· . 

### ..... ·······

### ..... <

### •·
... >< Limits .... . ·:: I> Monitoring . . Sample Type Parameter Units
·. •• •• Frequency



# . ·.

-

### Av~rage JIJlonthly a 

# I Maximum Daily b Samples/ days

..• 

## .......... Fecal Coliforms Organisms/ 200/100 mls average monthly limit, 1/7 c Grab lOOmis 400/100 mls maximum daily Temperature 

## oc There is no limitation for this parameter. Daily grab or continuous Information collected shall be reported in recording the monthly DMR. Effluent Flow MGD There is no limitation for this parameter. Continuous recording The average monthly and maximum daily flow shall be reported in the monthly DMR. FeedstockRate bbls per day There is no limitation for this parameter. Daily barrels (bbls) Theaverage monthly shall be reported in thP. monthlvnMR pH pH shall be maintained within the range of6.0 to 9.0. Continuous recording Excursions between 5.0 and 6.0, or 9.0 and 10.0 shall not be considered violations provided no single excursion exceeds 60 minutes in length and total excursions do not exceed 7 hours and 30 minutes per month. Any excursions below 5.0 and above 10.0 are violations. The instantaneous maximum and minimum pH shall be reported monthly. In the event ofa failure ofcontinuous monitoring equipment hourly grab samples shall meet the frequency requirements. Total Residual 0.1 mg/1 average monthly; 0.26 mg/1 maximum daily Grab 'Chlorine Total residual chlorine monitoring is required to be monitored on a daily basis during those times when the effluent is being actively chlorinated. Monitoring will also be required for two additional days following cessation ofchlorination. Acute ToxicityMonitoring: See Permit Condition S7

1 Chronic Toxicity Monitoring: See Permit Condition S8

PriorityPollutant Testing: See Permit Condition S12. Dioxin StudyAndAKART EngineeringReport: See Permit Condition S15.

a The average monthly effluent limitation is defined as the highest allowable average ofdaily discharges

over a calendar month, calculated as the sum ofall daily discharges measured during a calendar month divided bythe number ofdaily discharges measured during that month. Additional allocation may be permitted for storm water runoffand ballast water according to Permit Condition S1.C. b The maximum daily effluent limitation is defined as the highest allowable daily discharge. The daily

discharge means the discharge ofa pollutantmeasured during a calendar day. For pollutants with limitations expressed in units ofmass, the daily discharge is calculated as the total mass ofthe pollutant discharged overthe day. Forotherunits ofmeasurement, the daily discharge is the averagePage 8 of43 PermitNo. WA-000076-1

measurement ofthe pollutant over the day. Additional allocation may be permitted for storm water runoffand ballast water accordingto Permit Condition Sl.C.

c The monitoring frequencies for these parameters have been reduced based on the excellent

performance ofthe facility. Ifperformance levels deteriorate during the term ofthe permit, the monitoring frequencies shall increase to standard modes ( O&G 7/7,Ammonia 7/7, Phenols 7/7, Sulfides 2/7, Fecal Coliforms 2/7, TSS 7/7). Ecology will notify the facility by letter to increase monitoring upon Ecology's determination ofdeteriorating performance.

d One sample perweek shall be collected on either Saturday or Sunday.

B. Mixing Zone Descriptions The maximumboundaries ofthe mixing zones are defined as follows: Chronic Mixing Zone WAC 173-201A-100(4)(b)(i) specifies mixing zones shall not extend in any horizontal direction from the discharge ports for a distance greater than 200 feet plus the depth of water over the discharge ports as measured during mean lower low water (MLLW). Given a MLLW water depth of25 feet (7.6 meters) for the Permittee's outfall, the horizontal distance therefore is 225 feet (68.6 meters). The mixing zone is a circle with radius of225 feet (68.6 meters) measured from the center ofeach discharge port. The mixing zone extends from the seabed to the top ofthe water surface. Chronic aquatic life criteria and humanhealth criteriamust be met at the edge ofthe chronic zone. Acute Mixing Zone WAC 173-201A-100(8)(b) specifies that in estuarine waters a zone where acute criteria may be exceeded shall not extend beyond 10% ofthe distance established for the maximum or chronic zone as measured independently from the discharge ports. The acute mixing zone is a circle with radius of22.5 feet (6.9 meters) measured from the center of each discharge port. The mixing zone extends from the seabed to the top ofthe water surface. Acute aquatic life criteria must be met atthe edge ofthe acute zone.



### · ···· ···•··•··••·•·•···•·•··••••••••••··< Criteril:l 

### > < ·.•.•·•· ·•··••· •· ·.·.·• 

### < •**Avail~biE(bih.lti()fl** ) Acute Aquatic Life Criteria 20 Chronic Aquatic Life Criteria 91 Human Health Criteria

- Carcinogen 93 Human Health Criteria- Non-carcinogen 91
C. Ballast and Storm water Allocations (Outfall 001) The permittee is authorized to discharge additional amounts ofthe following parameters based on storm water and ballast water flow through OutfallNo. 001. Ballast water shall be determined by gauging the ballast water storage tanks. The average dryweather flow is hereby established as 2.7 MGD. Duringthe summermonths ofJune through October the permittee shall only be allowed to claim the storm water allocation for the maximum daily value when it can be demonstrated that measurable rainfallhas occurred at the refinery site duringthe previous 

### 10 calendardays. The storm water flow rate shall be determined as the difference between... Page 9 of43 PermitNo. WA-000076-1 total measured effluent through Outfall No. 001 and the sum ofballast water plus the average dry weather flow rate. The maximum daily storm water allocation shall only be granted onthose storm water flow days when the base limits from S1. above are exceeded

.

• .BallastWaterAUocation.:

..• ·•• St9rm 

### V'/atet Allobitioll:bLtf<lll Outfall#001 · ·.· · .· ·· ·· 

### #oof > · .· ·.. ·· · · ·· · Average Monthly Maximum Daily Average Monthly Maximum Daily

Biochemical Oxygen Demand (5-day) 210 400 220 400

Chemical OxygenDemand 2000 3900 1500 3000 Total Suspended Solids 170 260 180 280 Oil and Grease 67 126 67 130 Phenolic Compounds 1.4 2.9

Storm water flow is equal to the amount offlow in excess ofthe established dry weather flow. Forthe months ofJune through October, qualifying storm water flow days are onlythose days when measurable rainfall occurred atthe refinery site during the previous 10 calendar days. Average Monthly StormwaterAllocation (AMSWA) is defined as the sum ofstorm water flows from qualifying storm waterflow days sampled divided bythe number ofqualifying days times the average monthly allocation for that parameter. The Total Average Monthly Limitation (T) is the sum ofthe base average monthly limit (B) (listed in SlA) plus theAverage Monthly StormwaterAllocation. T 

### =B 

### +AMSWA (An example calculation is shown inAppendixB.) D. Stormwater, Emergency Overflow Monitoring (OUtfall 002, Outfall 003, Outfall 004) Beginning onthe effective date ofthis permit, the Permittee is authorized to discharge storm water and/or treated wastewater from 

### Outfall 002, 

### Outfall 003 

### or Outfall 004 during extreme rainfall events that exceed the capacity ofthe retentionponds. The storm water and/or treated waste watermust be monitored for theparameters at the frequencies listedbelow. Unless an emergency situation occurs the Permittee is required to notify Ecology priorto the discharge event. In an emergency situationthe Permittee is required to notify Ecology within 24 

### hours ofthe onset ofthe discharge. 

### Outside ofnormal working hours, voice mail notification ofthe Industrial Section's responsible engineer, shall meet the requirement The discharge shall not violate Chapter 173-201A WAC Water Quality Standards for Surface Waters ofthe State ofWashington. The sumtotal ofall discharges shall not violate limits specified in condition S1 ofthis permit.



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## Oo3 )**M6ni~orh19** <

### ~1~~~~**.l"YP~ ~~** **~** .•·.•·.•• Frequency.•.·.··Page 10 of43 Permit No.**WA~000076-1** Grab pH X X Once/event Composite Total Suspended Solids X X Once/event Composite Chemical Oxygen Demand X X Once/event Composite Oil & Grease X X Once/event Grab Lead X Once/event Composite Lead X Once/event Composite Zinc X Once/event Grab Volatile Organicsc X Once/event Composite Phenols X Once/event Composite Flow measurement X X Once/event Engineering Estimate

a The storm water and/or waste water samples shall be collected from the outfall or an on-line stormdrain

access point nearestthe outfall terminus.

bComposite samples shall be collected with a composite sampler or as a combination ofa minimum of

one sample aliquot perhour ofdischarge for the entire discharge or at minimum for the first three hours ofdischarge.

cVolatile organics shall include benzene, naphthalene, 1,2,4-trimethlybenzene, isopropylbenzene, pisopropylbenzene, ethylbenzene, propylbenzene, 1,3,5-trimethylbenzene, toluene, and total xylenes. dBNA's shall include phenanthrene, fluorene, naphthalene, 2-methylnaphthalene, 2-methylphenol, benzyl

alcohol, 2,4-dimethylphenol, and 4-methylphenol.
82. MONITORING
The Permittee shall monitor in accordance with the following conditions. A. Sampling and Analytical Procedures Samples and measurements taken to meetthe requirements ofthis permit shall be representative ofthe volume and nature ofthe monitoredparameters, including representative sampling ofany unusual discharge or discharge condition, including bypasses, upsets, and maintenance-related conditions affecting effluent quality. Sampling and analytical methods usedto meetthe monitoririg requirements specified in this permit shall conform to the latestrevision ofthe Guidelines Establishing Test ·Procedures for theAnalysis of Pollutants contained in40 CFRPart 136 or to the latest revision ofStandardMethodsfor the Examination ofWaterand Wastewater (APHA), unless otherwise specified inthis permit or approved inwriting by the Department of Ecology (Department).Page 11 of43 PermitNo. WA-000076-1 The daily composite sample shall be sufficient to allow for the Permittee's analysis, and an additional 2 gallons (minimum) shall be retained for 24 hours. The composite sample shall be kept refrigerated at 4° Centigrade inthe dark during collection and storage. B. Flow Measurement Appropriate flow measurement devices and methods consistent with accepted scientific practices shall be selected and used to ensure the accuracy and reliability of measurements ofthe quantity ofmonitored flows. The devices shall be installed, calibrated, and maintained to ensure that the accuracy ofthe measurements are consistent with the accepted industry standard for that type ofdevice. Frequency ofcalibration shall be in conformance with manufacturer's recommendations and at a minimum frequency of at least one calibrationper year. Calibrationrecords shall be maintained for at least three years. C. Laboratory Accreditation All monitoring data required bythe Department shall beprepared by a laboratory registered or accredited under the provisions of,Accreditation of Environmental Laboratories, Chapter 173-50 WAC. Flow, temperature, settleable solids, ·conductivity, pH, turbidity, and internal process control parameters are exemptfrom this requirement. Conductivity and pH shall be accredited ifthe laboratory must otherwise be registered or accredited. The Department exempts crops, soils, and hazardous waste data from this requirement pending accreditation oflaboratories for analysis ofthese media. S3. REPORTING.AND RECORDKEEPING REQUIREMENTS
The Permittee shall monitor andreport in accordance withthe following conditions. The falsification ofinformation submittedto the Department shall constitute a violation ofthe terms and conditions ofthis permit.
A. Reporting The first monitoring period begins onthe effective date ofthe permit. Monitoring results shall be submitted monthly. Monitoring data obtained during each monitoring period shall be summarized, reported, and submitted on a Discharge Monitoring Report (DMR) form provided, or otherwise approved, by the Department. DMRforms shall be postmarked or received no later than the 15th day ofthe month following the completedmonitoring period, unless otherwise specified in this permit. In addition, a summary sheet, listing daily results for the parameters tabulated in Special

Condition Sl, including MDLs, and QLs (when applicable), shall be submitted to the Department. Prioritypollutant analysis data shall be submitted no later than sixty (60) days following the monitoring period. Unless otherwise specified, all toxicity test data shall be submitted within sixty (60) days after the sample date. The report(s) shall be sentto the Department ofEcology, Industrial Section, P. 

### 0. Box47706, Olympia, Washington 98504-7706.Page 12 of43 PermitNo. WA-000076-1 All laboratory reports providing data for organic and metal parameters shall include the following information: sampling date, sample location, date ofanalysis, parameter name, CAS number, analytical method/ number, method detection limit (IviDL), laboratory practical quantitation limit (PQL), reporting units, and concentration detected. Discharge Monitoring Reports must be submitted monthly whether or not the facility was discharging. Ifthere was no discharge during a given monitoring period, submit the report as required with the words "no discharge" entered inplace ofthe monitoring results.
B. Records Retention The Permittee shall retain records ofall monitoring information for a minimum ofthree (3) years. Such information shall include all calibration and maintenance records and all original recordings for continuous monitoring instrumentation, copies ofall reports required bythis permit, and records ofall data used to complete the application for this permit. This period ofretention shall be extended during the course ofany unresolved litigationregarding the discharge ofpollutants by the Permittee orwhenrequested by the Director. C. Recording of Results For each measurement or sample taken, the Pemiittee shall record the following information: (1) the date, exactplace, method, and time ofsampling or measurement; (2) the individual who performedthe sampling or measurement; (3) the dates the analyses were performed; (4) the individual who performedthe analyses; (5) the analytical techniques ormethods used; and (6) the results ofall analyses.
D. Additional Monitoring by the Permittee Ifthe Permittee monitors any pollutant more frequently thanrequired bythis permitusing test procedures specified by Condition S2. ofthis permit, thenthe results ofthis monitoring shall be included in the calculation and reporting ofthe data submitted inthe Permittee's DMR.
E. Twenty-four Hour Notice of Noncompliance Reporting 1. The permittee must take the following action upon violation ofanypermit condition: Immediately take actionto stop, contain, and cleanup unauthorized discharges or otherwise stop the noncompliance and correct the problem and, ifapplicable, immediately repeat sampling and analysis. The results ofany repeat sampling shall be submittedto Ecology within 30 days ofsampling. 2. The permittee must report the following occurrences ofnoncompliance by telephone, to Ecology's Ind:ustrial Section, within 24 hours from the time the Permittee becomes aware ofany ofthe following circumstances. Outside of normal working hours, voice mail or email notification ofthe Industrial Section responsible engineer, and 24 hours spill reporting hot line ifnecessary, shall meet this requirement:Page 13 of43 PermitNo. WA-000076-1

a. any noncompliance that may endanger health or the environment; b. any unanticipated bypass that exceeds any effluent limitation in the permit (See S.4 B. "bypass procedures"); c. any upsetthat exceeds any effluent limitation inthe permit (See G.l6, "Upset"); d. any violation ofa maximum daily or instantaneous maximum discharge limitation for any ofthe pollutants in Sl.A.; or e. any overflowprior to the treatment works, whether ornot such overflow endangers health orthe environment or exceeds any effluent limitation in the permit. 3. The Permittee must also provide a written submissionwithin five days ofthe time that the Permittee becomes aware ofany event required to be reported under subpart 2, above. The written submission must contain: a; a description ofthe noncompliance and its cause; b. the period ofnoncompliance, including exact dates and times; c. the estimated time noncompliance is expected to continue ifithas not been corrected; d. steps taken orplanned to reduce, eliminate, and preventrecurrence ofthe noncompliance; and e. ifthe non compliance involves an overflowprior to the treatment works, an estimate ofthe quantity (in gallons) ofuntreated overflow. 4. Ecology may waive the written report on a case-by-case basis ifthe oral reporthas been received within 24 hours ofthe noncompliance. IfEcology waives the 5-day written report, a written report ofthe incident shall be submitted with the monthly Discharge Monitoring Report.
F. Other Noncompliance Reporting.:. The permittee mustreport all instances ofnoncompliance, notrequired to be reported immediately or within 24 hours, at the time that monitoring reports for S3 .A ("Reporting") are submitted. The reports must containthe information listed in paragraph E above, ("Twenty-four HourNotice ofNoncompliance Reporting"). Compliance with these requirements does notrelieve the Permittee from responsibility to maintain continuous compliance with the terms and conditions ofthis permit or from the resulting liability for failure to comply.

G. Reporting - Shellfish Protection Unauthorized discharges such as collection system overflows, plant bypasses, or failure ofthe disinfection system, shall be reported immediately to the Department ofEcology and the Department ofHealth, ShellfishProgram. The Department ofEcology's Northwest Regional Office 24-hr number is 206-649-7000, and the Department of Health's Shellfish 24-hr. number is 360-786-4183.Page 14 of43 PermitNo. WA-000076-1 84. OPERATIONS AND MAINTENANCE The Permittee shall, at all times, properly operate and maintain all facilities or systems of treatment and control (and related appurtenances) which are installed to achieve compliance withthe terms and conditions ofthis permit. Proper operation and maintenance also includes adequate laboratory controls and appropriate quality assurance procedures. This provision requires the operation ofback-up or auxiliary facilities or similar systems, which are installedby a Permittee only when the operation is necessary to achieve compliance with the conditions ofthis permit. A. Operations and Maintenance Manual The approved Operations and Maintenance Manual shall be kept available atthe permitted facility and all operators shall follow the instructions and procedures ofthis manual. In addition to the requirements ofWAC 173-240-150(1) and (2), the O&M Manual shall include: Emergency procedures for plant shutdown and cleanup in event ofwastewater system upset or failure. The O&M Manual shall be reviewed bythe permittee at least annually and made available to the agency uponrequest. For the purposes ofthisNPDES permit, a Treatment System Operating Plan (TSOP) is a concise summary ofspecifically defined elements.ofthe O&M Manual. The TSOP shall not conflict withthe O&M Manual and shall include the following information: I. A baseline operating condition, which describes the operatingparameters and procedures, used to meet the effluent limitations ofS1 at the production levels used indeveloping these limitations. 2

.. Inthe event ofproductionrates, which are belowthe baseline levels used to establish these limitations, the plan shall describe the operatingprocedures and conditions needed to maintain designtreatment efficiency. The monitoring and reporting shall be described inthe plan. 3. Inthe event ofan upset, due to plant maintenance activities, severe storm water events, start ups or shut downs, or other causes, the plan shall describe the operating procedures and conditions employed to mitigate the upset. The monitoring and reporting shall be described inthe plan. 4. A description ofany regularly scheduled maintenance or repair activities at the facility which would affect the volume or character ofthe wastes discharged to the wastewater treatment system and a planfor monitoring and treating/controlling the discharge ofmaintenance-related materials (such as cleaners, degreasers, solvents, etc.). Anupdated Treatment System Operating Plan shall be submitted to the Department 

### by November 2, 2010. This plan shall be updated and submitted, as necessary, to include requirements for any major modifications ofthe treatment system.Page 15 of43 Permit No. WA-000076-1 B. Bypass Procedures Bypass, which is the intentional diversion ofwaste streams from any portion ofa treatment facility, is prohibited, and the Department maytake enforcement action against a Permittee for bypass unless one ofthe following circumstances (1, 2, or 3) is applicable. 1. Bypass for Essential Maintenance without the Potential to Cause Violation ofPermit Limits or Conditions. Bypass is authorized ifit is for essential maintenance and does not have the potential to cause violations oflimitations or other conditions ofthis permit, or adversely impactpublic health as determined bythe Department prior to the bypass. The Permittee shall submitprior notice, ifpossible, at leastten (10) days before the date of the bypass. 2. Bypass Which is Unavoidable, Unanticipated, and Results inNoncompliance ofthis Permit. This bypass is permitted only if:
a. Bypass is unavoidable to prevent loss oflife, personal injury, or severe property damage. "Severe property damage" means substantial physical damage to property, damage to the treatment facilities whichwould cause them to become inoperable, or substantial and permanent loss ofnatural resources which can reasonably be expected to occur inthe absence ofa bypass. b. There are no feasible alternatives to the bypass, such as the use ofauxiliary treatment facilities, retention ofuntreated wastes, stopping production, maintenance during normal periods ofequipment downtime (but not ifadequate backup equipment should have been installed inthe exercise ofreasonable engineeringjudgmentto prevent a bypass which occurred during normal periods ofequipment downtime or preventative maintenance), or transport ofuntreated wastes to another treatment facility.
c. The Department is properly notified ofthe bypass as required in condition S3E of this permit. 3. Bypass which is Anticipated and has the Potential to Result in Noncompliance ofthis Permit.

The Permittee shall notify the Department at least thirty (30) days before the planned date ofbypass. The notice shall contain 

### (1) a description ofthe bypass and its cause; (2) an analysis ofall known alternatives which would eliminate, reduce, ormitigate the need for bypassing; (3) a cost-effectiveness analysis ofalternatives including comparative resource damage assessment; (4) the minimum and maximum duration of bypass under each alternative; (5) a recommendation as to thepreferred alternative for conducting the bypass; (6) the projected date ofbypass initiation; (7) a statement ofPage 16 of43 PermitNo. WA-000076-1 compliance with SEPA; (8) a request for modification ofwater quality standards as provided for inWAC 173-201A-110, ifan exceedance ofany water quality standard is anticipated; and (9) steps taken orplanned to reduce, eliminate, and prevent reoccurrence ofthe bypass. Forprobable construction bypasses, the need to bypass is to be identified as early in the planningprocess as possible. The analysis required above shall be considered during preparation ofthe engineering report orfacilities plan and plans and specifications and shall be included to the extentpractical. In cases where the probable need to bypass is determined early, continued analysis is necessary up to and including the constructionperiod in an effort to minimize or eliminate the bypass. TheDepartment will considerthe following priorto issuing an administrative order for this type bypass:
a. Ifthe bypass is necessaryto perform construction ormaintenance-related activities essential to meet the requirements ofthis permit. b. Ifthere are feasible alternatives to bypass, such as the use ofauxiliary treatment facilities, retention ofuntreated wastes, stopping production, maintenance during normal periods ofequipment downtime, ortransport ofuntreated wastes to another treatment facility.
c. !fthe bypass is planned and scheduled to minimize adverse effects onthe public and the environment. After consideration ofthe above and the adverse effects ofthe proposed bypass and any other relevant factors, the Department will approve or deny the request. The public shall be notified and given an opportunityto comment onbypass incidents of significant duration, to the extentfeasible: Approval ofa request to bypass will be by administrative order issued by the Departmentunder RCW 90.48.120. C. Duty to Mitigate The Permittee·is required to take all reasonable steps to minimize orprevent any discharge or sludge use or disposal inviolation ofthis permitthat has a reasonable likelihood ofadversely affecting humanhealth orthe environment.

S5. FACILITY LOADING Design Criteria Flows orwaste loadings ofthe following design criteria for the permittedtreatment facility shall not be exceeded:

Average monthly flow for the maximum month1 4.3 MGDPage 17 of43 PermitNo. WA-000076-1 Average monthly COD for the maximum month2 1700 mg/1

1as measured across the process wastewater treatment system (ifconstructed, see SS B. below) 2as measured at the primary clarifier

A. Report ByNovember 2, 2010, the Permittee shall submit an analysis to the Departmentthat compares current conditions within the refinery to the predicted design capacity ofthe wastewater treatment system, as determined inthe approved Tesoro engineering report dated April28, 2000. The analysis shall also predict the next permit term's production increases, any new loadingsto the wastewater treatment plant and the resultant impacts to the wastewater treatment system capacity. The report shall include a discussion ofany production increases, changes to crude sources, modifications to process units, changes in additives, additional sources ofwastewater, etc., that could potentially cause a change in wastewater characteristics. Ifpredicted waste loads exceed approved design capacities the Permittee shall update the engineering report for the wastewater treatment system byplanning for new or upgraded treatment facilities to treat expected increases inwaste loads. This update shall be submitted at least one hundred eighty (180) days prior to the planned start ofconstruction unless a shorter time is approved by Ecology. The update shall be prepared in accordance with Chapter 173-240 WAC and include at minimum the following elements:

. 1 Design andperformance flow and loading capacity ofthe overall system shall be determined. Specifically, TSS, BOD, and COD loading capacity shall be determined. Flow data shall be presented interms ofaverage dry weather flow, average monthly flow ofthe maximum month, and peak hourly flow. Ifflowmonitoring data is not available for wastewater streams then an estimate shall be provided withthe method used for estimation. 2 Basic design data and sizing calculations for each unit inthe wastewater treatment system. Clarifier information should include detention: times, overflowrates, solids and weir loading rates, volume and depth. Activated sludge basin information shall include hydraulic detention time, volumetric loading, MLSS, F:Mratio, return ratio, and sludge residence time. Information for settling ponds shall include solids loading rates, volume and retention time. This information shall be provided for design criteriaparameters-- BOD, TSS, and oil and grease, where applicable. B. Flow Measurement The permittee shall submit an engineering report with cost estimates by July 1, 2007 for Ecology review and approval. The engineering report shall include an evaluation offlow measurement options through boththe process wastewater treatment system and the stormwater system and provide a construction schedule for the chosen feasible and approved alternative. Flowmonitoring shall be located withinthe process wastewater treatment system such that the measured flow is not impacted byrecycle streams.Page 18 of43 PermitNo. WA-000076-1

86. NON-ROUTINE AND UNANTICIPATED DISCHARGES A. Begilming on the effective date ofthis permit, the Permittee may discharge nonroutine wastewater on a case-by-case basis ifapproved by the Department. Prior to any such discharge, the Permittee shall contact the Department and at a minimum provide the following information: 1. The nature ofthe activity that is generating the discharge. 2. Any alternatives to the discharge, such as reuse, storage, or recycling ofthe water. 3. The total volume ofwater expected to be discharged. 4. The results ofthe chemical analysis ofthe water. The water shall be analyzed for all constituents limited for the Permittee's discharge. The analysis shall also inciude hardness, any metals that are limited by water qualitY standards, and any other parameter deemed necessary bythe Department. All discharges shall comply with the effluent limitations as established in Condition S1. ofthis permit, water quality standards, sedimentmanagement standards, and any other limitations imposed bythe Department. 5. The date ofproposed discharge and the rate at which the water will be discharged, in gallons per minute. The discharge rate shall be limited to that which will not cause erosion ofditches or structural damage to culverts and their entrances or exits. B. The discharge cannot proceeduntil the Department has reviewed the information provided and has authorized the discharge. Authorization from the Department will beby letter to the Permittee orby an Administrative Order.
87. ACUTE TOXICITY A. Monitoring When There Is No Permit Limit for Acute Toxicity The Permittee shall test final effluent once in the last summer and once in the last winterprior to submission ofthe application for permitrenewal. All species listed below shall be used on each sample and the results submitted to the Department by November2, 2010. The acute toxicity testing shall determine an LC50. The percent survival in 100% effluent shall also be reported. Acute toxicity tests shall be conducted with the following species andprotocols: a) Fathead minnow, Pimephalespromelas ( 96 hour static-renewal test, method: EPN600/4-90/027F b) Daphnid, Ceriodaphnia dubia, Daphniapulex, or Daphnia magna ( 48 hour statictest, method: EPA/600/4-90/027F. The Permittee shall choose one ofthethree species and use it consistently throughout effluentrecharacterization.Page 19 of43 PermitNo. WA-000076-1 B. Sampling and Reporting Requirements 1. All reports for effluent characterization or compliance monitoring shall be submitted in accordance with the most recent version ofDepartment ofEcology Publication# WQ-R-95-80, Laboratory Guidance and Whole Effluent Toxicity Test Review Criteria in regards to format and content. Reports shall contain bench sheets and reference toxicant results for test methods. Ifthe lab provides the toxicity test data on floppy disk for electronic entry into the Department's database, then the Permittee shall send the disk to the Department along with the test report, bench sheets, and reference toxicantresults. 2. Testing shall be conducted on effluent grab samples. Samples takenfor toxicity testing shall be cooled to 4 degrees Celsius immediately after being collected and shall be sent to the lab as soon as practicable upon completion. The lab shall begin the toxicity testing as soon as possible but no later than 36 hours after sam;. pling was ended. 3. All samples and test solutions for toxicity testing shall have water quality measurements as specified in Department ofEcology Publication# WQ-R-95-80, Laboratory Guidance and Whole Effluent Toxicity Test Review Criteria ormost recent versionthereof. 4. All toxicity tests shall meet quality assurance criteria and test conditions inthe most recent versions ofthe EPA manual listed in subsection A. and the Department ofEcology Publication# WQ-R-95-80, Laboratory Guidance and Whole Effluent Toxicity TestReview Criteria. Iftest results are determined to be invalid or anomalous bythe Department, testing shall be repeated with freshly collected effluent. 5. Control water and dilution water shall be laboratory water meeting the requirements ofthe EPA manual listed in subsection A. Dilution water for toxicity testing shall be laboratory water ofsufficient quality for good control performance. 6. The whole effluent toxicity test series shall be run on anunmodified sample of final effluent. 7. The Permittee may choose to conduct a full dilution series test during compliance monitoring in order to determine dose response. Inthis case, the series must have a minimum offive effluent concentrations and a control. The series of concentrations must include a 5% dilution (the ACEC).

S8. CHRONIC TOXICITY A. Monitoring When There Is No Permit Limit for Chronic Toxicity During the third or fourth year ofthe Permit term the Permittee shall conduct chronic toxicity testipg onthe fmal effluent. The two chronic toxicity tests listed below shall be conducted on each sample taken for effluent characterization. The results ofthis chronic toxicity testing shall be submitted to the Department by November 2, 2010.Page 20 of43 PermitNo. WA-000076-1 

### During the third or fourth year, effluent testing for chronic toxicity shall be conducted quarterly. The Permittee shall conduct chronic toxicity testing on a series of at least five concentrations ofeffluent in order to determine appropriate point estimates. This series ofdilutions shall include a 5% concentration (the ACEC). The Permittee shall compare the ACEC to the control using hypothesis testing at the 0.05 level of significance as described inAppendix H, EPA/600/4-89/001. Chronic toxicity tests shall be conducted with two ofthe following species as identified below and the most recent version ofthe following protocols: Saltwater Chronic Toxicity Test Species Top Smelt Silverside minnow Pacific oyster Mussel Atherinops affinis Menidia beryl/ina Crassostrea gigas Mytilus sp. Method EPA/600/R-95/136 (or) EPA/600/4-91/003 EPA/600/R-95/136 (or) EPA/600/R-95/136 The Permittee shall use the West Coast fish (topsmelt,Atherinops ajjinis) for toxicitytesting unless the lab cannot obtain a sufficient quantity ofa West Coast species in good condition in which case the East Coast fish (silverside minnow, Menidia beryl/ina) maybe substituted. The Pacific oyster and mussel tests shall be run in accordance withEPA/600/R95/136 and the bivalve development test conditions inthe Department ofEcology Publication# WQ-R-95-80, Laboratory Guidance a,nd Whole Effluent Toxicity TestReview Criteria ormost recent version thereof. B. Sampling and Reporting Requirements 1. All reports for effluent characterization or compliance monitoring shall be submitted in accordance with the mostrecent version ofDepartment ofEcology · Publication# WQ-R-95-80, Laboratory Guidance and Whole Effluent Toxicity TestReview Criteria in regards to format and content. Reports shall contain bench sheets and reference toxicant results for test methods. Ifthe lab provides the toxicity test data on floppy disk for electronic entry into the Department's database; thenthe Permittee shall send the diskto the Department along with the test report, bench sheets, and reference toxicant results.

2. Testing shall be conducted on effluent grab samples. Samples taken for toxicity te.sting shall be cooled to 4 degrees Celsius immediately after being collected and shall be sent to the lab as soon as practicable upon completion. The lab shall beginthe toxicity testing as soon as possible butno later than 36 hours after sampling was ended.Page 21 of43 PermitNo. WA-000076-1 3. All samples and test solutions for toxicity testing shall have water quality measurements as specified in Department ofEcology Publication# WQ-R-95-80, Laboratory Guidance and Whole Effluent Toxicity Test Review Criteria or most recent versionthereof. 4. All toxicity tests shall meet quality assurance criteria and test conditions inthe most recent versions ofthe EPA manual listed in subsection A. and the Department ofEcology Publication# WQ-R-95-80, Laboratory Guidance and Whole Effluent Toxicity TestReview Criteria. Iftest results are determined to be invalid or anomalous by the Department, testing shall be repeated with freshly collected effluent. 5. Control water and dilution water shall be laboratory water meeting the requirements ofthe EPA manual listed in subsection A. Dilution water for toxicity testing shall be laboratory water ofsufficient quality for good control performance. 6. The whole effluent toxicity test series shall be run on an unmodified sample of final effluent. 7. The Permittee may choose to conduct a full dilution series test during compliance monitoring in order to determine dose response. Inthis case, the series must have a minimum offive effluent concentrations and a control. The series of concentrations must include the ACEC. 8. All whole effluent toxicity tests that involve hypothesis testing and do not comply with the chronic**statistical.po~er** standard of39% as defined inWAC 173-205- 020 must be repeated on a fresh sample with an increased number ofreplicates to increase the power. S9. OUTFALL EVALUATION The Permittee shall inspect once perpermit cycle the submergedportion ofthe outfall line and diffuser to document its integrity and continued function. Ifconditions allow for a photographic verification, it shall be included inthe report. The permittee shall submit the inspection-report to the Departmentby November2, 2010.

S10. POLLUTION PREVENTION PLANNING AND ACTIVITIES Pollutionpreventionplanning/activities at the facility include:

• the new pollutionpreventionplan (P2) projects identified for the upcoming permit cycle

intheplanupdate, and

• the Standard Operating Procedures (SOPs), BestManagement Practices (BMPs) and

workpractices developedthrough pollutionprevention activities from previous permitPage 22 of43 PermitNo. WA-000076-1 pollutionpreventionplans, stormwater pollution preventionplans (SWPPP), solid waste control plans, and spill plans. The Permittee shall continue to ensure proper operation and maintenance ofthe refinery process units and wastewater treatment system by following existing SOPs, BMPs and work practices. These procedures and other measures/facilities currently employed atthe refineryto prevent or minimize the potential for release ofpollutants to the wastewater treatment system, storm water, and/or waters ofthe state shall be continued ormaintained unless modified bythepollutionpreventionplan updates required below. Solid Waste The Permittee shall handle and dispose ofall solid waste material in such a manner as to prevent its entry into state ground or surface water. The Permittee shall not allow leachate from its solid waste material to enter state waters without providing all known, available, and reasonablemethods oftreatment, nor allow such leachate to cause violations ofthe State Surface Water Quality Standards, Chapter 173-201A WAC, orthe State Ground Water Quality Standards, Chapter 173-200 WAC. The Permittee shall applyfor a permit orpermitmodification as may be required for such discharges to state ground or surface waters. Storage TankWastewater The operation ofremoving wastewater from oil, product, and intermediate distillate storage tanks shall beperformed in a manner and with facilities as required to prevent the wastewater from draining or spilling onto the ground. A. Pollution Prevention Plan Development and Implementation The Permittee shall prepare an update to their Pollution Prevention Plan and submit itto the Departmentfor review and approval by May 

## 1st, 2007. The Permittee shall implement the approved pollutionprevention planupdate and any approved modifications to the plan and abide bythe timeframes identified throughoutthe term of the permit. The objective ofthis update is to identify any new sources ofpollutants, to reevaluate previously identifiedpollution prevention opportunities and to identify any new opportunities and implement those that are technically and economically achievable. Previously identified opportunities include those identified by the facility intheir .current PollutionPreventionPlan and those identified inEcology Publication 02-07-017 (Water PollutionPrevention Opportunities in Petroleum Refineries). The update shall also include an evaluation ofthe existing SOPs, BMPs andworkpractices developed under previous pollutionprevention activities.
B. Specific Plan Update Requirements The Permittee shall update the following plan elements as necessary: the policy statement and signature, employee involvement, training and awareness, descriptions ofcurrent pollutionprevention activities, and the description ofpotentialpollutants and sources. Appendix A includes references to guidance documents, specific items to be included inPage 23 of43 PermitNo. WA-000076-1 the plan, and procedures for identifying, evaluating and prioritizing pollutionprevention opportunities. Other information available to the Permittee may also be used in preparing the plan. The updated plan shall include a schedule for implementation ofeach newly selected opportunity. Ifa detailed analysis oftechnical and economical feasibility for any pollutionprevention opportunity will extendbeyond the deadline for submitting the updated plan, the Permittee shall include a schedule for completing the analysis inthe plan submittal. The timeframe for implementing any opportunities scheduled for further evaluation and then selected shall beprovided inthe biennial report. C. Storm water Inspections The Permittee shall conduct two storm water inspections peryear; one during the wet season (October 1through April30) and the other during the dry season (May 1through September 30). The wet season inspection shall be conducted during a rainfall event and shall include observations ofthe presence ofany floating materials, suspended solids, oil and grease, discolorations, turbidity, odor, etc. in storm water runoffthroughout the refinery that could contribute to a discharge off-site. The dry season inspection shall determine the presence ofunpermitted non-storm water discharges such as sanitary wastewater, non-contact cooling water, process wastewater, and drainage from raw material/product/waste storage to the storm water drainage system. Ifanunpermitted, non-storm water discharge is discovered, the Permittee shall immediately notifythe Department. Inspections shall be conducted by staffthat is knowledgeable and trained in the application ofBMPs and pollutionprevention activities at the refinery.
D. Plan Evaluation and Biennial Reporting The Permittee shall periodically evaluate and modify, as necessary, the pollution preventionplan and associated existing SOPs, BMPs and work practices to ensure that they have been updated or otherwise modified to reflect current conditions, that measures to reduce or eliminate pollutant loadings selected inthe plan are adequate and are being properly implemented in accordance withthe terms ofthe permit, and whether any additional controls are needed. The Permittee shall modifythe pollutionprevention plan whenever there is a change in design, construction, operation, ormaintenance ofthe facility which significantly increases the generation or potential generation ofwater pollutants or causes the pollution preventionplan and associated existing SOPs, BMPs and work practices to be less effective in controlling pollutants. The Permittee shall provide for implementation ofany modifications to the pollution preventionplan in a timely manner. The Permittee shall 

### submit a biennial progress report every two years thereafter (starting May 

## 1st, 2009) ofsubmitting the Pollution Prevention PlanUpdate as requiredPage 24 of43 PermitNo. WA-000076-1 by S10.A. The report shall identify the implementation status ofeach pollution prevention opportunity selected, the benefits or other results ofimplementation actions completed, and any modifications or updates to the plan. The report shall also include a summary of the results ofstorm water inspections.
E. Continuous Improvement Inmaintaining, implementing, and updating the pollutionpreventionplan, the Permittee is encouraged to employ continuous improvementprinciples, including the systematic and ongoing identification, evaluation, and implementation ofpollutionprevention opportunities 

### in all decisions having environmental consequences.
S11. CONSTRUCTION STORMWATER POLLUTION PREVENTION A standard StormwaterPollution Prevention Plan (SWPPP) for construction activities greater than one acre and less than five (1-5) acres, including construction dewatering, shall beprepared and submitted to the Department by September 1 8\2006. Project details for each construction project and any site specific issues for that project that require additional BMPs shall be submittedto the Department atleast 90 days prior to the start ofconstruction or anothertime period as a'greed to byEcology. A Stormwater Pollution Prevention Plan (SWPP) for construction activity occurring on sites greater than 5acres, including construction dewatering, shall beprepared and implemented priorto the start ofeach constructionproject. Project details for each constructionproject shall be submitted to the Department at least 90 days prior to the start ofconstruction or anothertime period as agreed to byEcology. Eachplan shall beprepared in accordance withthe objectives and requirements identified in Special ·condition S.9. included inthe National PollutantDischarge Elimination System and State Waste Discharge General Permit for storm water discharges associated with construction activities issued by Ecology onNovember 16th, 2005, or as revised. The permittee is responsible for achieving compliance with state ofWashington surface water quality standards (Chapter 173-201AWAC), sediment management standards (Chapter 173-204 WAC), ground water quality standards (Chapter 173-200 WAC), and human healthbased criteria inthe National Toxics Rule (Federal Register, Vol. 57, No. 246, Dec. 22, 1992,pages 60848-60923). Where construction sites are not incompliance with these standards, the permittee shall take immediate action(s) to achieve compliance by implementing additional BMPs and/or improved maintenance ofexisting BMPs. S12. PRIORITY POLLUTANT TESTING
The Permittee shall annually sample the final effluent and analyze the sample for the priority pollutants and otherpollutants listed in the table below. The detection limit and the method shall conform to those listed. The data shall be intabular form withthe detection limit, the value including units, and the method listed. Each annual datareport shall be sentto Ecology by November 1st ofeachyearbeginning in 2006.Page 25 of43 PermitNo. WA-000076-1 This table is a list ofall priority pollutants. Itincludes PCBs and pesticides that are not required to be tested for unless they are used on site.

CAS Number Detection or Pollutant (ifavailable) Analytical Quantitation Protocol Level as EPA Part 136 methods or

Standard Methods Metals, Cyanide & Total Phenols DL J.tg/1 (Part C) Antimony, Total 7440-36-0 204.2 3 Arsenic, Total 7440-38-2 206.2 1 Beryllium, Total 7440-43-9 210.2 1 Cadmium, Total 7440-43-9 213.2 0.1 Chromium, Total 7440-47-3 218.2 1 Copper, Total 7440-50-8 220.2 1 Lead, Total 7439-92-1 239.2 1 Mercury, Total 7439-97-6 1631 0.2 ng/1 Nickel, Total 7440-02-0 249.2 1 Selenium, Total 7782-49-2 270.2 2 Silver, Total 7440-22-4 272.2 0.2 Thallium, Total 7440-28-0 279.2 1 Zinc, Total 7440-66-6 289.2 0.05 Cyanide, Total 57-12-5 335.2 or 20 335.3 Cyanide, WAD 57-12-5 335.1 10

Phenols, total 420.1 or 420.2 Dioxin QL J.tg/1 2,3,7,8-Tetra-Chlorodibenzo-P-Dioxin 1764- 01-6 1613 0.00001 Volatile Compounds QL J.tg/1
Acrolein 107-02-8 624 50 Acrylonitrile 107-13-1 624 50 Benzene 71-43-2 624 10 Bis (chloromethyl) Ether 542-88-1 624 10 Bromoform 75-25-2 624 10Page 26 of43 PermitNo. WA-000076-1


### CAS Number Detection or Pollutant (if

### available) Analytical Quantitation Protocol Level as EPA Part 136 methods or

Standard Methods Carbon Tetrachloride 56-23-5 624 10 Chlorobenzene 108-90-7 624 50 Chlorodibromomethane 124-48-1 624 10 Chloroethane 75-00-3 624 10 2-Chloroethylvinyl Ether 110-75-8 624 50 Chloroform 67-66-3 624 10 Dichlorobromomethane 75-27-4 624 10 Dichlorodifluromethane 75-71-8 624 10 1, 1-Dichloroethane 75-34-3 624 10 1,2-Dichloroethane 107-06-2 624 10 1, 1-Dichloroethylene 75-35-4 624 10 1,2-Dichloropropane 78-87-5 624 10 1,3-Dichloropropylene 542-75-6 624 10 Ethylbenzene 100-41-4 624 10 Methyl Bromide 74-83-9 624 50 Methyl Chloride 74-87-3 624 50 Methylene Chloride 75-09-2 624 20 1, 1,2,2-Tetrachloroethane 79-34-5 624 10 Tetrachloroethylene 127-18-4 624 10 Toluene 108-88-3 624 10 1,2-Trans-Dichloroethylene 156..:60-5 624 10 1,1,1-Trichloroethane 71-55-6 624 10 1,1,2-Trichloroethane 79-00-5 624 10 Trichloroethylene 79-01-6 624 10 Trichlorofluromethane 75-69-4 624 10 Vinyl Chloride 75-01-4 624 10 Acid Compounds QL J.lg/1 2-Chlorophenol 95-57-8 625 10 2,4-Dichlorophenol 120-83-2 625 10 2,4-Dimethylphenol 105-67-9 625 10 4,6-Dinitro-0-Cresol 534-52-1 625 50 (2-methyl-4,6- dinitrophenol) 2,4 Dinitrophenol 51-28-5 625 50 2-Nitrophenol 88-75-5 625 20 4-Nitrophenol 100-02-7 625 50 P-Chloro-M-Cresol 59-50-7 625 10 Pentachlorophenol 87-86-5 625 50 Phenol 108-95-2 625 10 2,4,6-Trichlorophenol 88-06-2 625 10Page 27 of43 PermitNo. WA-000076-1 

### CAS Number Detection or Pollutant (if

### available) Analytical Quantitation Protocol Level as EPA Part 136 methods or

Standard Methods
Base/Neutral Compounds 

### QL J..Lg/1 Acenaphthene 83-32-9 625 10 Acenaphtylene 208-96-8 625 10 Anthracene 120-12-7 625 10 Benzidine 92-87-5 625 50 Benzo (a) Anthracene 56-55-3 625 10 Benzo (a) Pyrene 50-32-8 625 10 3,4-Benzofluoranthene 205-99-2 625 10 Benzo (ghi) Perylene 191-24-2 625 20 Benzo (k) Fluoranthene 207-08-9 625 10 Bis (2-Chloroethoxy) Methane 111-91-1 625 10 Bis (2-Chloroethyl) Ether 111-44-4 625 10 Bis (2-Chloroisopropyl) Ether 108-60-1 625 10 Bis (2-Ethylhexyl) Phthalate 117-81-7 625 10 4-Bromophenyl Phenyl Ether 101-55-3 625 10 Butyl Benzyl Phthalate 85-68-7 625 10 Base/Neutral Compounds 

### QL J..Lg/1 2-Chloronaphthalene 91-58-7 625 10 4-Chlorophenyl Phenyl Ether 7005-72-3 625 10 Chrysene 218-01-9 625 10 Dibenzo (a,h) Anthracene 53-70-3 625 20 1,2-Dichlorobenzene 95-50-1 625 10 1,3-Dichlorobenzene 541-73-1 625 10 1,4-Dichlorobenzene 106-46-7 625 10 3,3'-Dichlorobenzidine 91-94-1 625 50 Diethyl Phthalate 84-66-2 625 10 Dimethyl Phthalate 131-11-3 625 10 Di-N-Butyl Phthalate 84-74-2 625 10 2,4-Dinitrotoluene 121-14-2 625 10 2,6-Dinitrotoluene 606-20-2 625 10 Di-n-octyl Phthalate 117-84-0 625 10 1,2-Diphenylhydrazine (asAzobenzene) 122-66- 7 625 20 Fluoranthene 206-44-0 625 10 Fluorene 86-73-7 625 10 Hexachlorobenzene 118-74-1 625 10 Hexachlorobutadiene 87-68-3 625 10 Hexachlorocyclopentadiene 77-47-4 625 10 Hexachloroethane 67-72-1 625 20Page 28 of43 PermitNo. WA-000076-1 

### CAS Number Detection or Pollutant (ifavailable) Analytical Quantitation Protocol Level as EPA Part 136 methods or

Standard Methods Indeno (1,2,3-cd) Pyrene 193-39-5 625 20 Isophorone 78-59-1 625 10 Naphthalene 91-20-3 625 10 Nitrobenzene 98-95-3 625 10 N-Nitrosodimethylamine 62-75-9 625 50 N-Nitrosodi-N-Propylamine 621-64-7 625 20 N-Nitrosodiphenylamine 86-30-6 625 20 Phenan,threne 85-01-8 625 10 Pyrene 129-00-0 625 10 I,2,4-Trichlorobenzene 120-82-1 625 10

GC/MS Fraction - Pesticides and 

### QL f.tgll PCBs

Aldrin 309-00-2 608 0.05 a-BHC 319-84-6 608 0.05 13-BHC 319-85-7 608 0.05 Y-BHC 58-89-9 608 0.05 o-BHC 319-86-8 608 0.05 Chlordane 57-74-9 608 0.2 4,4'-DDT 50-29-3 608 0.1 4,4'-DDE 72-55-9

. 608 0.1 4,4' DDD · 72-54-8 608 0.1 Dieldrin**60-57~1** 608 0.1 a-Endosulfan 959988 608 0.1 13-Endosulfan 33213659 608 0.1 Endosulfan Sulfate 1031-07-8 608 0.1 Endrin 72-20-8 608 0.1 Endrin Aldehyde 7421-83-4 608 0.1 Heptachlor 76-44-8 608 0.05 HeptachlorEpoxide 1024-57-3 608 0.05 PCB-1242 53469-21-9 608 1.0 PCB-1254 11097-69-1 608 1.0Page 29 of43 PermitNo. WA-000076-1
CAS Number Detection or Pollutant ( ifavailable) Analytical Quantitation Protocol Level as EPA Part 136 methods or

Standard Methods PCB-1221 11104-28-2 608 1.0 PCB-1232 11141-16-5 608 1.0 PCB-1248 12672-29-6 608 1.0 PCB-1260 11096-82-5 608 1.0 PCB-1016 12674-11-2 608 1.0 Toxaphene 8001-35-2 608 5.0

S13. DANGEROUS WASTES- PERMIT BY RULE REQUIREMENTS

Thepermittee is authorized to treat dangerous wastes, generated on or off-site, atthe wastewatertreatment facility under the permit byrule provisions ofChapter WAC 173- 303-802(5). This authorization is limited to the onsite and off-site waste streams identified onthe permit application and application amendments as approvedby Ecology. The permittee shall maintain records ofthe off-site waste streams treated at the wastewater facility. The origin, volume, known waste constituents, 

### anY analytical data, and date ofaddition, shall be recorded. This information shall be available to an authorized representative ofthe Department as per General Condition G2. A summary of the off-site dangerous wastes accepted and treated bythe permittee shall be submitted withthe applicationfor permitrenewal. S14. MERCURY POLLUTION PREVENTION PLAN ByMay 

## 1st, 2007, the permittee shall submit a mercurypollutionpreventionplan to Ecology. The plan shall includetesting mercury concentrations in three crude oils processed atthe refinery eachyear. A correspondingtest ofthe waste water discharge shall also occur atthese times. Historic crude oil analysis or assays canbe used to demonstrate mercury composition. Testing shall occur overthree years. Thepermittee may request testing modifications from Ecology. This activity can be coordinated with the mercurytesting specified in S1.A.Page 30 of43 PermitNo. WA-000076-1 815. DIOXIN STUDY AND AKART ENGINEERING REPORT


### A. AKART EngineeringReport The Permittee shall prepare an engineering report to study treatment and prevention alternatives for the catalyticreformer wastewater stream to prevent dioxin and furan congeners from being discharged into the final effluent and to ensure that all known, available, and reasonable methods oftreatment and prevention (AKART) are being applied. Two copies ofthe report should be prepared in accordance with WAC 173-240 and submitted to the Department for review and approval byMay 1 5\2009. The report shall include a schedule for preparingplans and specifications and for .constructing/implementing the treatment orprevention alternative selected. 

### B. Wastewater Sampling The Permittee shall samplethe final effluent (001) andthe upstream wastewater stream from the catalytic reformer units for chlorinated dioxin and furan (2,3,7,8-Cl substituted tetra- through octa- congeners) concentrations twice during the permit cycle. The wastewater streamfrom the catalytic reformer units shall be sampled during two different catalystregeneration events. A grab sample shall be collected from each caustic wash during the regeneration ofeachreformerunit. Analysis including sample containers and QA/QC shall be conducted in accordance with Method 1613: Tetra- through Octa- Chlorinated Dioxins and Furans by Isotopic Dilution HRGCIHRMS, USEPA Office ofWater, Engineering and Analysis Division, RevisionA. The MinimUin Level (ML) ofdetection for 2,3,7,8- TCDD/TCDF shall be 10 parts per quadrillion orless. The Permittee shall reportthe lowest detected concentrations ofall 2,3,7,8-Cl substituted dioxins and furans that meetthe quality assurance specifications of Method 1613; including all detected concentrations belowthe calibration limits of Method 1613. C. Dioxin Study Report The Permittee shall submitto the Depmi:ment a Dioxin StudyReport containing the results ofthe sampling and analysis byMay 1st, 2009. The wastewater datareport to Ecology shall include: date sampled, total flow for each wash, and the concentration ofthe 2,3,7,8-Cl substituted tetra- through octa- dioxin and furan congeners from each caustic wash. The Permittee shall require the laboratoryto report and maintain onfile for each sample set: the analytical holding times, summary of internalprecision and recovery, calibration data, analysis sequence (run logs), daily checks (ongoing precision and accuracy standards, blanks, instrument checks), QA/QC data (duplicates, matrix spikes/labeled analog spikes), and raw data (chromatograms).Page 31 of43 PermitNo. WA-000076-1 GENERAL CONDITIONS



### Gl. SIGNATORY REQUIREMENTS All applications, reports, or information submitted to the Department shall be signed and certified. A. All permit applications shall be signed by either a responsible corporate officer ofat least the level ofvice president ofa corporation, a general partner ofa partnership, or the proprietor ofa sole proprietorship. B. All reports required by this permit and other informationrequested by the Department shall be signed by a person described above orby a duly authorized representative of that person. A person is a duly authorized representative only if: 1. The authorization is made inwriting by a person described above and submitted to the Department. 2. The authorization specifies either an individual or a positionhaving responsibility for the overall operation ofthe regulated facility, such as the position ofplantmanager, superintendent, position ofequivalent responsibility, or an individual orpositionhaving overall responsibility for environmental matters. (A duly authorized representative may thus be either a named individual or any individual occupying a named position.) C. Changes to authorization. Ifan authorization underparagraphB.2 above is no longer accurate because a different individual or positionhas responsibility for the overall operation ofthe facility, a new authorization satisfying the requirements ofparagraph B.2 above must be submittedto the Departmentpriorto or together with any reports, information, or applications to be signed by an authorized representative. D. Certification. Anyperson signing a document under this section shall make the following certification: I certify under penalty oflaw, 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 ofthe person orpersons who manage the system, orthose 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 offine and imprisonment for knowing violations.Page 32 of43 PermitNo. WA-000076-1 

### G2. RIGHT OF INSPECTION AND ENTRY The Permittee shall allow an authorized representative ofthe Department, upon the presentation ofcredentials and such other documents as may be required by law: A. To enter upon the premises where a discharge is located or where any records must be kept under the terms and conditions ofthis permit. B. To have access to and copy- at reasonable times and at reasonable cost- any records required to be kept under the terms and conditions ofthis permit. C. To inspect- at reasonable times- any facilities, equipment (including monitoring and control equipment), practices, methods, or operations regulated or required under this permit. D. To sample or monitor- at reasonable times- any substances orparameters at any locationfor purposes ofassuring permit compliance or as otherwise authorized bythe Clean Water Act.



### G3. PERMIT ACTIONS This permit may be modified, revoked and reissued, orterminated either at the request of any interestedperson (including the permittee) or upon the Department's initiative. However, the permit may only be modified, revoked and reissued, or terminated for the reasons specified in 40 CPR 122.62, 122.64 or WAC 173-220-150 according to the procedures of40 CPR 124.5. A. The following are causes for terminating this permit during its term, or for denying a permitrenewal application: 1. Violation ofany permit term or condition. 2. Obtaining a permitbymisrepresentation or failure to disclose all relevant facts. 3. A material change in quantity or type ofwaste disposal. 4. A determination thatthe permitted activity endangers human health or the environment or contributes to water quality standards violations and can only be regulated to acceptable levels bypermit modification ortermination [ 40 CPRpart 122.64(3)]. 5. A change in any condition that requires either a temporary orpermanentreduction or· elimination ofany discharge or sludge use or disposal practice controlled bythe permit [ 40 CPRpart 122.64( 4)]. 6. Nonpayment offees assessedpursuantto RCW 90.48.465. 7. Failure orrefusal ofthe permittee to allow entry as required inRCW 90.48.090.Page 33 of43 PermitNo. WA-000076-1 B. The following are causes for modification but notrevocation and reissuance except when the permittee requests or agrees: 1. A material change in the condition ofthe waters ofthe state. 2. New information not available at the time ofpermit issuance that would have justifiedthe application ofdifferent permit conditions. 3. Material and substantial alterations or additions to the permitted facility or activities which occurred after this permit issuance. 4. Promulgation ofnew or amended standards orregulations having a direct bearing upon permit conditions, orrequiring permit revision. 5. The Permittee has requested a modification based on other rationale meeting the criteria of40 CFRpart 122.62. 6. The Department has determined that good cause exists for modification ofa compliance schedule, and the modification will not violate statutory deadlines. 7. Incorporation ofan approved local pretreatment program into a municipality's permit. C. The following are causes for modification or alternatively revocation and reissuance: 1. Cause exists for termination for reasons listed inA 1through A7, ofthis section, and the Department determines that modification orrevocation and reissuance is appropriate. 2. The Department has received notification ofa proposedtransfer ofthe permit. A permitmay also be modified to reflect a transfer after the effective date ofan automatic transfer (General Condition G8) but will not be revoked and reissued after the effective date ofthe transfer except upon the request ofthe newpermittee.



### G4. REPORTING PLANNED CHANGES The Permittee shall, as soon as possible, but no later than sixty (60) days prior to the proposed changes, give notice to the Department ofplannedphysical alterations or additions to the permitted facility, production increases, orprocess modificationwhich will result in: 1) the permitted facility being determined to be a new source pursuantto 40 CFR 122.29(b); 2) a significant change inthe nature or an increase in quantity of pollutants discharged; or 3) a significant change 

### inthe Permittee's sludge use or disposal practices. Following such notice, and the submittal ofa new application or supplement to the existing application, along with required engineering plans and reports, this permit maybe modified, or revoked and reissuedpursuant to 40 CFR 122.62(a) to specify and limit any pollutants notpreviously limited. Until suchmodification is effectiye, any new or increased discharge in excess ofpermit limits or not specifically authorized bythis permit constitutes a violation.Page 34 of43 PermitNo. WA-000076-1 

### G5. PLAN REVIEW REQUIRED Prior to constructing or modifying any wastewater control facilities, an engineering report and detailed plans and specifications shall be submitted to the Department for approval in accordance with Chapter 173-240 WAC. Engineering reports, plans, and specifications shall be submitted at least onehundred eighty (180) days priorto the planned start of constructionunless a shorter time is approved by Ecology. Facilities shall be constructed and operated in accordance withthe approved plans.



### G6. COMPLIANCE WITH OTHERLAWS AND STATUTES Nothing inthis permit shall be construed as excusing the Permittee from compliance with any applicable federal, state, or local statutes, ordinances, orregulations.



### G7. DUTY TO REAPPLY The Permittee shall apply for permitrenewal at least 180 days (November 2, 2010) prior to the specified expiration date ofthis permit.



### G8. TRANSFER OFTHIS PERMIT Inthe event ofany change in control or ownership offacilities from whichthe authorized discharge emanate, the Permittee shall notify the succeeding owner or controller ofthe existence ofthis permit by letter, a copy ofwhich shall be forwarded to the Department. A. Transfers by Modification Except as provided inparagraphB below, this permit may betransferred bythe Permitteeto a new owner or operator only ifthis permithas been modified orrevoked andreissued under 40 CFR 122.62(b)(2), or a minormodification made under 40 CFR 122.63(d), to identifythe newPermittee and incorporate such other requirements as maybe necessary under the Clean WaterAct. B. Automatic Transfers This permitmay be automatically transferred to a newPermittee if:

1. ThePermittee notifies the Department at least 30 days in advance oftheproposed transfer date. 2. The notice includes a written agreement betweenthe existing andnewPermittee's containing a specific date transfer ofpermit responsibility, coverage, and liability betweenthem. 3. The Department does notnotify the existing Permittee and the proposednew Permittee ofits intent to modify or revoke andreissue this permit. A modification underthe subparagraph may also be minormodification under 40 CFR 122.63. If this notice is notreceived, the transfer is effective onthe date specified in the written agreement.Page 35 of43 PermitNo. WA-000076-1



### G9. REDUCED PRODUCTION FORCOMPLIANCE The Permittee, in order to maintain compliance with its permit, shall control production and/or all discharges upon reduction, loss, failure, or bypass ofthe treatment facility until the facility is restored or an alternative method oftreatment is provided. This requirement applies inthe situation where, among other things, the primary source of power ofthe treatment facility is reduced, lost, or fails.



### GlO. REMOVED SUBSTANCES Collected screenings, grit, solids, sludges, filter backwash, or other pollutants removed in the course oftreatment or control ofwastewaters shall notberesuspended orreintroduced to the final effluent stream for discharge to state waters.


### Gll. DUTY TO PROVIDE INFORMATION The Permittee shall submit to the Department, within a reasonable time, all information which the Department mayrequest to determine whether cause exists for modifying, revoking and reissuing, orterminating this permit or to determine compliance withthis permit. The Permittee shall also submit to the Departmentuponrequest, copies of records required to bekeptbythis permit.



### G12. OTHERREQUIREMENTS OF 40 CFR All otherrequirements of40 CFR 122.41 and 122.42 are incorporated in this permit by reference.



### Gl3. ADDITIONAL MONITORING The Department may establish specific monitoringrequirements in addition to those contained in this permit by administrative order orpermitmodification.



### G14. PAYMENT OF FEES The Permittee shall submitpayment offees associated withthis permit as assessed by the Department.



### GlS. PENALTIES FORVIOLATING PERMIT CONDITIONS Any person who is found guilty ofwillfully violating the terms and conditions ofthis permit shall be deemed guilty ofa crime, and upon convictionthereofshall bepunished by a fine ofup to ten thousand dollars ($10,000) and costs ofprosecution, or by imprisonment inthe discretion ofthe 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 ofa waste discharge permit shall incur, in addition to any otherpenalty as provided by law, a civil penalty in the amount ofup toPage 36 of43 Permit No. WA-000076-1
tenthousmid dollars ($10,000) for every such violation. Each and every such violation shall be a separate and distinct offense, and in case ofa continuing violation, every day's continuance shall be deemed to be a separate and distinct violation.



### G16. UPSET Definition- "Upset" means an exceptional incident in which there is unintentional and temporary noncompliance with technology-based permit effluent limitations because of factors beyond the reasonable control ofthe Permittee. Anupset does not include noncompliance to the extent caused by operational error, improperly designed treatment facilities, inadequate treatment facilities, lack ofpreventive maintenance, or careless or improper operation. Anupset constitutes an affirmative defense to an action brought for noncompliance with such technology-based permit effluent limitations ifthe re·quirements ofthe following paragraph are met. A Permittee who wishes to establish the affirmative defense ofupset shall demonstrate, throughproperly signed, contemporaneous operating logs or other relevant evidence that:

1) an upset occurred and that the Permittee can identify the cause(s) ofthe upset; 2) the permitted facility was being properly operated atthe time oftheupset; 3) the Permittee submitted notice ofthe upset as required in condition S3.E; and 4) the Permittee complied with any remedial measures required under S4.C ofthis permit. In any enforcement proceeding the Permittee seeking to establish the occurrence ofan -upset has the burden ofproof.



### G17. PROPERTY RIGHTS This permit does not convey any property rights ofany sort, or any exclusive privilege.



### G18. DUTY TO COMPLY The Permittee shall comply with all conditions ofthis permit. Any permitnoncompliance constitutes a violation ofthe Clean Water Act and is grounds for enforcement action; for permittermination,. revocation and reissuance, ormodification; or denial ofa permit renewal application.



### G19. TOXIC POLLUTANTS The Permittee shall comply with effluent standards or prohibitions establishedunder Section 307(a) ofthe Clean Water Act for toxic pollutants withinthe time provided inthe regulations that establishthose standards or prohibitions, even ifthis permit has notyet been modified to incorporate th.e requirement.Page 37 of43 PermitNo. WA-000076-1 

### G20. PENALTIES FORTAMPERING The Clean Water Actprovides that any person who falsifies, tampers with, orknowingly renders inaccurate any monitoring device or method required to be maintained under this permit shall, upon conviction, be punished by a fine ofnot more than $10,000 per violation, or by imprisonment for not more than two years per violation, or by both. Ifa conviction ofa person is for a violation committed after a first conviction ofsuch person underthis Condition, punishment shall be a fine ofnotmore than $20,000 per day of violation, or by imprisonment ofnotmore than four (4) years, orby both.



### G21. REPORTING ANTICIPATED NON-COMPLIANCE The Permittee shall give advance notice to the Departmentby submission ofa new application or supplementthereto at least one hundred and eighty (180) days prior to commencement ofsuch discharges, ofany facility expansions, production increases, or otherplanned changes, such as process modifications, in the permitted facility or activity whichmayresult in noncompliance withpermit limits or conditions. Any maintenance of facilities, which might necessitate unavoidable interruption ofoperation and degradation ofeffluent quality, shall be scheduled during non-critical water quality periods and carried out in a manner approved bythe Department.



### G22. REPORTING OTHERINFORMATION Where the Permittee becomes aware that it failed to submit anyrelevant facts in a permit application, or submitted incorrect information in a permit application or in any report to the Department, it shall promptly submit such facts or information.



### G23. REPORTING REQUIREMENTS APPLICABLE TO EXISTING MANUFACTURING, COMMERCIAL, MINING, AND SILVICULTURAL DISCHARGERS The Permittee belonging to the categories ofexisting manufacturing, commercial, mining, or silviculture mustnotifythe Department as soon as they know orhave reason to believe: · A. That any activity has occurred orwill occur which wouldresult inthe discharge, on a routine or frequent basis, ofany toxic pollutant which is not limited inthis permit, if that discharge will exceed the highest ofthefollowing "notification levels:"

1. One hundred micrograms per liter (100 )lg/1). 2. Two hundred micrograms per liter (200 )lg/1) for acrolein and acrylonitrile; five hundred micrograms per liter (500 )lg/1) for 2,4-dinitrophenol and for 2-methyl-4,6- dinitrophenol; and one milligram per liter (1 mg/1) for antimony. 3. Five (5) times the maximum concentration value reported for thatpollutant inthe permit application in accordance with 40 CFR 122.21(g)(7). 4. The level established bythe Director in accordance with40 CFR 122.44(£).Page 38 of43 PermitNo. WA-000076-1

B. That any activity has occurred or will occur whichwould result in any discharge, on a non-routine or infrequent basis, ofa toxic pollutant which is not limited in this permit, if that discharge will exceedthe highest ofthe following "notification levels:" 1. Five hundred micrograms per liter (500j..tg/L). 2. One milligramperliter (1 mg/L) for antimony. 3. Ten (10) times the maximum concentration value reported for thatpollutant in the permit application inaccordance with40 CFR 122.21(g)(7). 4. The level established by the Director in accordance with40 CFR 122.44(f).



### G24. COMPLIANCE SCHEDULES Reports ofcompliance ornoncompliance with, or any progress reports on, interim and final requirements contained in any compliance schedule ofthis permit shall be submitted no later than fourteen (14) days following each schedule date.

### Page 39 of43 PermitNo. WA-000076-1 APPENDIX A REFINERY NPDES POLLUTIONPREVENTION PLANS- SPECIFIC REQUIREMENTS GUIDANCE DOCUMENTS Guidance available to develop a pollution preventipn plan include the Storm water ManagementManual for Western Washington publishedAugust 2001 by Ecology (Publication numbers 99-11 through 99-15), the 'Pollution Prevention and BestManagement Practices' section ofthe Ecology Permit Writer's Manual (Chapter XII.) (Publication number 92-109), EPA's Organizational Guide to Pollution Prevention, 2001 available at http://W\Vw.p2ric.org/CachedPages/printguid.pdf, the methodologies of pollution prevention planning references available at http://www.ecy.wa.gov/programs/hwtr/p2/p3.html, and other information provided by the Ecology Permit Manager. The Permittee is expectedto apply the methodologies from the existing guidance to cover other sources, pathways, or measures not covered within the strict scope ofthe WAC 173-307 guidance. PLAN & PLANIMPLEMENTATIONREQUIREMENTS Policy Statement and Signature: The pollution prevention plan shall include a policy statement articulating management and corporate support for the plan and a commitmentto implementthe plan and to continued pursuit ofpollution prevention opportunities. The plan, plan updates, and modifications shall be signed in accordance with Permit Condition G1. Employee Involvement, Training, and Awareness: The pollution prevention plan shall include a description ofpersonnel training and employee involvement programs that emphasize pollution prevention and solicit employee ideas about pollution prevention opportunities and other environmental issues. Stafftraining records shall be maintained onsite and be available for inspection. Description ofCurrentPollution Prevention Activities: The plan shall include a description ofpreventive measures and facilities already employed at the refinery to prevent, reduce, eliminate, or control releases ofpollutants to influent wastewater streams, storm water, and/or waters ofthe state. Incorporating OtherPollution Prevention Plans The Permittee may incorporate applicable portions ofplans prepared for otherpurposes. Plans or portions ofplans incorporated into the pollution prevention planbecome enforceable requirements ofthis permit.
Description ofPotentialPollutants and Sources: The pollution prevention plan shall include a detailed description ofthe processes or activities that contribute or potentially contribute pollutants to the treatment plant influent, storm water, groundwater, and wetlands. Influent wastewater streams shall include those having daily average flowrates equal to or greaterthan 30 gpm atthe point where the wastewater stream enters the collection system and the catalytic wash water spent caustic and wash water waste streams. Minor incidental waste streamstoPage 40 of43 PermitNo. WA-000076-1

storm water, such as landscaping fertilizers, do not have to be included. The plan shall identify**~he** materials used, processed, stored, treated, or disposed ofat the facility and the pollutants that are generated orpotentially generated orreleased. The level ofdetail provided in the plan should be sufficient to help identify and understand how and why materials are used and pollutants generated or released. Process flow diagrams and/or material input/output information shall be included on a process unitbasis. The Permittee shall include in the plan all materials which may become pollutants or cause pollution upon reaching state waters, including, butnot limited to: 1) persistent bioaccumulative and toxic chemicals (PBTs), 2) oil and petroleum products and, 3) materials which, when spilled or otherwise released into the environment, would be designated Dangerous Waste (DW) orExtremelyHazardous Waste (EHW) bythe procedures set forth in WAC 173-303-070. In determining which sources and pollutants to address in the plan, the Permittee shall use available sampling data, as well as knowledge ofprocesses and materials, and available information on the relative toxicity orhazard ofmaterials. Sources ofPBTs shall be included in the analysis. The Permittee shall not be required to sample each stream analytically and may use engineeringjudgmentto assess and quantify material inputs and outputs on a process unit basis. Identification & Preliminary Evaluation ofPollution Prevention Opportunities: The plan shall identify pollutionprevention opportunities and provide a detailed analysis ofeach opportunity's technical (including safety considerations) and economic feasibility. Opportunities determined to be technically and economically feasible will be considered as known, available, and reasonable and therefore are required to be selected and scheduled for implementation. For each pollution prevention opportunity selected, the plan shall identify the process(es) or activities it affects, an estimate ofthe amount ofpollutants reduced, and the environmental or otherbenefits that will be achieved. The Permittee shall concentrate on opportunities that reduce or eliminate PBTs, priority pollutant metals, diethanolamine (DEA), and methyldiethanolamine (.MDEA) to influent andupstream flows to the oily water sewer. In addition, methods to enhance biodegradation ofMDEA should also be considered. Solids and hydrocarbon loadings to the oily water sewer shall also be evaluated. Storm water shall be evaluated for oil and grease and solids loading as well as toxics. Inidentifying and evaluatingpollutionprevention opportunities, the Permittee shall consider the following:

• Allreasonably expected activities and conditions, such as normal operations, maintenance, and other ancillary activities; equipment failure; improper operation; upsets, accidents, spills, leaks; andnatural events such as rainfall, snowfall, etc. • All areas ofthe refinery with potential to generate waterpollutants including process units, raw material and product storage, handling and transfer facilities, material handling areas, maintenance areas, solid and hazardous waste storage, treatment, and disposal, and storm water systems. The following are examples ofpollution prevention strategies that may warrant evaluation: • Improving and/or establishing new management practices and standard operatingprocedures addressing: increased training or supervision; improvements in inventory control, materials and waste handling, general operations, and housekeeping; preventive maintenance; and remedial measuresPage 41 of43 Permit No. WA-000076-1

• Process or equipment modifications, including re-engineering processes to use less toxic input materials or to utilize by-products • Material substitution • Reducing material inputs • Recycle/reuse ofrefinery waste, by-products, orprocess materials and fluids • Application ofwater conservation methods, including water reuse • Waste segregation and separation • Alternative and/or enhanced treatment technology, including upstream treatment ofpollutants Cross-media shift ofpollutants should be avoided, unless a clear net environmental benefit results and compliance with standards applicable to other media or management programs would be maintained.

Prioritization & Selection ofPollution Prevention Opportunities: Theplan shall prioritize pollution prevention opportunities. The Permittee shall provide their rationale for howthe pollution prevention opportunities are prioritized. In addition to technical and economical feasibility, otherfactors may influence ranking ofopportunities and should be included inthe discussion. These factors may include capital projects planned or ongoing at the refinerythat will provide a benefit to environmental media otherthan water, corresponding reduction in safety risks, etc. Projects that achieve the highest environmental benefit shall have greater priority. Inprioritizing and selectingpollution prevention opportunities, the Permittee shall give preference first to those that eliminate, avoid, or reduce the generation ofwater pollutants at the source, second to those that recycle orreuse the pollutants, and third to those that provide at-source or near-source treatment to remove pollutants orrenderthem less toxic or harmful. Inranking opportunities, the Permittee shall also consider pollutant loading and toxicity and the potential to achieve the greatestreduction with respect to time and costs. The Permittee is expected to establish reasonable priorities and schedules for implementationto achieve the greatest reduction in pollutant quantity and toxicity, as well as for management and fiscal necessity.

### Page 42 of43 PermitNo. WA-000076-1

APPENDIXB

CALCULATING STORMW ATERAND BALLAST WATERALLOCATIONS S1.A effluent limitations in the Tesoro NPDES permit are base permit limits that apply to process water flow

- these values are fixed. S1.C. effluent limitations in the Tesoro NPDES permits are used to calculate incremental limits that apply to storm water and ballast water- the S1.C. limitations are actually multipliers. The incremental limit calculated using one ofthe multipliers is added to the base permit limit for commingled discharges. Storm water flow is calculated by the subtraction ofan estimated dry weather flow and ballast water flow from the total flow discharged each day. Ballast water flow is measured by gauging the ballast tank. The ballast and storm water allocations in the Tesoro NPDES permit are based on guidelines in 40 CFR 419.12(c) and 419.22(e). The allocations for storm water are intended to apply to runofffrom areas associated with industrial aCtivity, not outlying areas such as parking lots and surrounding acreage. Daily maximum storm water and ballast water allocations shall only be used on an individual parameter basis when :mass loading in the effluent exceeds daily maximum base permit limitations and when measurable rainfall has occurred within the timeframes established in the NPDES permit. The Tesoro NPDES permit states that during specified summer months, the permittee will only be allowed to claim the storm water allocation when it can be demonstrated that measurable rainfall has occurred at the refinery site during the previous 10 calendar days. Incalculating storm water allocations, look at the days where total effluent flow exceeds the established dry weather flow. The difference is flow due to storm water. Ifthe storm water allocation can be claimed per the conditions·ofthe previous paragraph, multiplythe additional flow (in million gallons per day, MGD) bythe appropriate allocation provided intheNPDES permit. This is an incremental permit limit in lbs per day. Evaluating compliance with the maximum daily permit limitation- on a day by day basis compare the maximum discharge for a parameterto the base permit limitation plus the storm water allocation and/or ballast water allocation calculated for thatparameter. Example Calculation 1. Dry weather flow: 1MGD Date: March 15, 1997 Parameter: Oil and Grease (O&G) O&G maximum daily base permit limitation: 100 lbs/day Maximum daily 0& G discharge: 177 lbs/day Total effluent flow: 2.2 MGD Flow rate due to rainfall: 2.2 - 1

### = 1.2 MGD O&G maximum daily storm water allocation: 130 lbs/million gallons O&G incremental limit due to storm water: 1.2 x 130 

### = 156lbs/dayPage 43 of43 PermitNo. WA-000076-1 O&G maximum daily permit limitation for 3/15/97: 100 

### + 156 

### = 256lbs/day Note: Since 177 is less than 256, the permittee is in compliance with the oil and grease maximum daily permit limitation on the day evaluated. Ifballast waterhad also been a factor on 3/15/97, an additional oil and grease allocation due to ballast water could have been calculated and added into the maximum daily permit limitation. Evaluating compliance with the monthly average permit limitation

- determine the days where effluent flow exceeds dry weather flow and sampling occurred. Add up the excess flow for these days and divide the result bythis number ofdays. Multiply by the monthly average storm water allocation.

-- this is the incremental storm water allocation. Compare the monthly average discharge for a parameter (total mass loading for the month divided by the days in the month) to the base permit limitation plus the storm water allocation and/or ballast water allocation calculated for that parameter.
Example Calculation 2. Dry weather flow: 1MGD Month: November 1997 Parameter: Total Suspended Solids (TSS) TSS average monthly base**p~rmit** limitation: 120 lbs/day Average monthly TSS discharge: 216lbs/day During the 5 sampling days the total storm water flow excess was: 2.5 million gallons TSS average monthly stormwater allocation: 180 lbs/million gallons TSS incremental limit due to storm water: 2.5/ 5 x 180 

### = 90 lbs/day TSS average monthly permit limitation forNovember 1997: 120 

### + 90 

### =210 lbs/day Note: Since 216 is greater than 210, the TSS average monthly permit limit is exceeded. Ifballast water had also been a factor in Example Calculation 2.,the average monthly permit limit would not have been exceeded. Ballast water flow for November 1997 (1 day): 50,000 gallons or 0.05 million gallons TSS average monthly ballastwater allocation: 170 lbs/million gallons TSS incremental limit due to ballast water: 0.05/ 1 x 170 

### = 8.5 lbs/day TSS average monthly permit limitation for November 1997: 120 

### + 90 

### + 8.5 = 218.5lbs/day