# ..

State

of Washington

Department

of Ecology 

# WASTEWATER

" tREATMEN

;J7 **PL:ANJ**

**-y~** 

# COMPLIANCE

INSPECTION

REPORT Section

A

: General Information

No

rth wes

t Reg

i onal Office 3190160

th Ave

SE Bellevue,

WA 98008 (425) 649-7000

ph (425) 649-7098

fax last

u date 4-15-05 Report Version 181New DAmended

PERMIT# 

# WA-002277-2

mo/day/yr

Inspection

Type

Insp ecto

r Code

Fa cility

Type 181Public

DPrivate 

# 1/26/09



# A



# E lnsoection

work

davs 

# 3.0

Facil

i tv Self-Monitorina



# 4 Name

, Locat

ion,

and Phone

of

Fa

cili

ty Inspe

cted

Remarks Photos

Taken 181ves

DNo Section



# 8: Facilit Southwest

Suburban

Sewer District-

Salmon

Creek WWTP 

# 12550 Shorewood

Drive

SW Burien,

WA 

# 98146

King County Name(s

) !Title(s)

of On-Site Representative(s) Terry Hoefle- Operations

Supervisor Name

, Address,

Title, Phone

, and

Fa

x Number

of Respons

i ble Official Mr

. Steve Sandelius

, General Manager 

# 431

SW Ambaum

Blvd Burien,

WA 

# 98166 Phone Number 

# 206-244-9575

Fax Section

C

: Areas Evaluated

Durin

Samoles

Ta

k en DYes

181No E ntry

T ime 

# 10

: 30 AM E xit Time 

# 12:35

AM O the

r Fac

ility Data

Lead

Eco

lo av lnsoec

torls) Alison

Evans,

Carl Jones Permit

E ffective

Date 

# 06

/ 30/08 Permit

E xpi ration

Date 

# 6/30/13 181 Permit

181 Flow Measurement

181 Operations

& Maintenance

D CSO

/ SSO (Sewe

r Overflow

) D Records/Reports 181 Facility

Site Review 181 EffluenUReceivin

Water 

# I. Introduction

. 181 Self-Monitoring

Program D Compliance

Schedules D Laborato

181 Sludge Handling/Disposal

D Pollution Prevention D Pretreatment

D Multimedia D Storm

Water

D Other Section

0

: Summary

of Find

in s/Comments A reg

io nal Class

I inspec

t ion was conducted

at the Southwest

Suburban

Sewer

Dist

rict

- Salmon

Creek Wastewater

Treatment

Plant (WWTP)

on January

26, 2009. Alison

Evans (NWRO

WQ Municipal

Unit)

and

Carl Jones

(SW

RO WQ Outreach

Operato

r Tra

i ner) conducted

the inspection

with assistance

from Terry Hoefle

and

Tim Berge

. Prior

noti

fica tion

of the inspection

was given. The Salmon

Creek WWTP

is located

in Burien

in King County

and

it receives

resident

i al and

a small amount

of commercial

sewage

from White Center, Shorewood,

Fauntleroy,

Arbor Heights,

Delridge,

Highland

Park, Seahurst,

and Burien.

There

are

no major industrial contributors

to this plant

and

this plant

does

not accept

hauled septage

. The current

wet weather

average

month

l y flow

to the

faci

lity

is approximately

3

. 6 MGD;

the max month

des

ign

for

the facil

ity

is

8

. 1 MGD.

1/1

is not

a significant

prob

l em. Flows

have

not

i n

c reased

in recent

years;

in fact they

have decreased

slightly

due

to water conservation

and

Ill improvements

. No sign

i ficant

future growth

is expected

. The original

plant

was constructed

in 1955

and

was upgraded

to secondary

treatment

in 1988

. Virtually

all parts

of the plant

are covered

. Treatment

consists

of screening,

grit removal

, primary clarification,

biological

treatment

with rotating biological contactors

(RBCs), secondary clarification

, and chlorine disinfection.

Treated

effluent discharges

to the Puget Sound

via

a deep marine

outfall

with

a diffuser

. Alison arranged

this

visit

to meet

the staff

and

to become acquainted

with

the facility

. Wh

il e onsi

t e,

Al

i son

and

Carl

also fulfilled

the Class

I inspection requirements

by conducting

a site inspection

and assessing

the permittee

' s self

- monitoring

procedures

. II

. Results

and Discussion The Salmon

Creek WWTP collection

system includes

several

pump stations,

three siphon

lin es and

one main influent

line

to the treat ment plant which

all

d isc harge

to the main influent

box where influent samples

are taken.

P lant

p

i ping

was recently

modified

in the vicinity

of the headworks

to allow sampling

upstream

of the recirculated

flows within

the plant. The plant headworks

includes

two

fine mesh Parkson

MEVA (Hycor)

1/4-inch

dual

step Rotoscreens

. These

units

each

have

a peak

flow capacity

of

10 MGD. Screenings

are washed

, bagged

and transported

to

a landfill

for disposal. Wastewater

then passes through

fo

ur grit channels

; grit

is transferred

to

a hopper

then

to

a truck

for disposal. After

the headworks,

water

enters

three paralle11

million

gallon rectangular

primary

cla

r

i fiers

. All three

units

were online

during

our

v

i s

i t

; typically

only

two

are used

in the summer.

These

units

are cleaned

annually

. The discharge

wier

of the

pr ima

ry cla

r

i fie

rs

i ncludes

an overflow

weir

that diverts

flows

in excess

of

8

. 2 mgd around

the RBCs

and secondary

clarifie

rs. These bypassed

flows co-mingle

with secondaril

treated

water

rior

to disinfection

.InspectionReportPermit#WA-002277-2Followingtheprimaryclarifiers,flowsbelow8.2mgdpassthroughadistributionboxwiththreedistributiongates.ThisstructurefunctionstodistributeflowsequallyamongthreetrainsofRBCs;eachtrainconsistsofsixRBCshafts.TheairdrivenRBCsareoftheSurfactdesign,withtheshaftsineachtrainconstructedwithincreasingmediadensity.Thefirstfourshaftsarelowdensityandarelocatedinacommonbasin;thenexttwoshaftsareinaseparatebasinandareofsomewhathigherdensitymediaconstruction,andasinglehighdensityshaftislocatedinathirdbasin.Wastewaterflowsthrougheachofthethreebasinssequentially.,..RBCRBCRBCRBCRBCRBC_.RBCRBCRBCRBCRBCRBCSecondaryClContact1c'"""lr(T'"kL-__,,..-___.c1,.solids:•landappliednearWatetVille,WAtoPugetf-.SoundOutfallAftertheRBCtrains,wastewaterenterstwolarge,70'diameter,secondaryclarifiers.Thecirculareffluentlaundersarelocatedintheouterpartsofthetankswithdouble-sidedv-notchweirs.Theclarifiersaretakendownforservicingapproximatelyeverysixmonthsduringperiodsoflowflow.Effluentfromthesecondaryclarifiersisthendisinfectedusingliquidchlorine.Chlorineisinjectedintoaflashmixerusingaflow-pacedNalcopump.Thechlorinecontactchamberconsistsoftworectangularbasins,each80x20feetinsize,withadditionalsolidsremovedwithflightskimmers.Thefinaleffluentdischargestoadeepmarineoutfallwithdiffuser.Solids:Secondarysludgefromthesecondaryclarifiersisreturnedtotheprimaryclarifierdistributionbox.Primarysludgeisconcentratedinacoveredthickener,thenpumpedtoaheatedprimaryanaerobicdigesterwithfloatingcover,thenpumpedtoasecondary(unheated)anaerobicdigester.Gasfromtheanaerobicdigestionisusedtoheatandmixthedigester.Odorsarecontrolledusinganairscrubbertowerwithhypochloritegeneratedonsite.Thisfacilitycreatessodiumhypochloritebysubjectingasaltsolutiontoanelectriccurrent.Inadditiontoodorcontrol,thishypochloriteisusedforeffluentdisinfection.Abeltfilterpressisoperatedapproximateythreetimesperweektoconcentratethedigestedsludge,andthefinalproductisthendistributedtoseveralfinaldestinations(oneofwhichistheMillerCreektreatmentplantforcomposting).OdorControlSystem:Thefacilityhastwoodorcontrolsystems;onefortheheadworksandsolidsthickener,andanotherfortherestoftheplant.Thetw<:>-phaseodorscrubbersusesulfuricacid,sodiumhypochlorite,andcausticsodatoeliminatemalodorousgases.FlowMeasurement:Flowismeasuredafterthechlorine contactchamberusingaMiltronicsUltrasonicmeteroveraParshallFlume.Sampling:Thetime-pacedinfluentsampleispulledimmediatelybeforetheheadworks(upstreamofanyreturnflows)usingaManningSampler.Thetime-pacedeffluentsampleispulledafterthechlorinecontactchamber.BackupPowerandAlarms:BackuppowerisavailablefromaKohleremergencydieselstandbygeneratorwhichistestedunderloadmonthlyandrunsallnecessaryequipmentinthetreatmentplant.Sparepartsarekeptonsite.The1000gallonfuelstoragetankprovides72hoursofemergencyoperation.An auto-dialeralarmsystemnotifiestheon-callworkersofanyofthefollowingevents:poweroutage,back-uppowerfailure,wet-wellhighlevel,equipmentfailure,screwpressshutdown,andintrusion.Allliftstationsexceptonehaveautomatically-activatedback-uppowergeneratorsthataretestedmonthly.Eachliftstationalsohasanauto-alarmthatcallsoutforpoweroutagesandhighsumplevels.Thereisnoalarmfordisinfectionfailure.Staffing:Plantstaffincludesfourcertifiedoperators:TerryHoefle(Group4),DarrenHill(Group3),MicahSteinbauer(Group4),andStevenAbegglen(Group1).The plantisfullystaffed5daysaweekandforabout2.5hoursonSaturdayandSunday.BypassScenario:Forpeakhourflows>8.2MGD,wastewaterbypassesRBCsandsecondaryclarifiers.Bypassesoccurapproximately1-2timeseachyear.ThefacilitydoesnotcurrentlyreportbypassestoEcology;theyreportaveragedailyflowsontheirDMRs.Ecologyneedspeakhourflowstoassesstheoccurrencesofbypasses.Ill:Illisnotabigproblemforthisfacility.RecordsandLaboratoryReview.Wedidnotreviewcopiesofthepermitorrecordsduringthisvisit.TheWWTPhascompletedtheDeartmentofEcolo'sLaboratoAccreditationProram.WADepartmentofEcologyPage2of11InspectedbyCarlJones,AlisonEvansInspectionReportPermit#WA-002277-2Ill.ConclusionsDuringourvisittheeffluentqualitylookedgoodandthefacilitywaswellkept.Theoperatorsdoagreatjobkeepingthefacilityrunningwell.Whenbypassesoccur,operatorsmustdothefollowing:-sampleTSS,BOD,fecalcoliform,andchlorineresidualinfinaleffluentwhilebypassing,-indicateonDMRswhen bypassesoccur.Ecologyhasnowayofsystematicallylookingatpeakhourordailyflowsforeachfacility.Pleaseindicatethetreatmentprocessesbypassed,andthedurationandvolumeofthebypass.-reportallbypassesto:-Ecology'sERTSsystem:425-649-7000-DOHShellfish:1-360-236-3330(businesshours)or1-360-786-4183(24hours).Includeinformationaboutthetreatmentprocessesbypassed,andbypassdurationandvolume.UpcomingPermitRequirements:ThepermitrequirestemperaturereportingstartingJanuary2010,asedimentsamplingandanalysisplantbyMarch2010,asedimentreportbyApril2011,andan1/1EvaluationbyOctober2011.PleasecontactAlisonEvans(425-649-7160)withpermitrelatedquestions,CarlJones(360-407-6431)withoperation-relatedquestions,andAmyJankowiak(425-649-7195)withanycompliance-relatedquestions.Attachments:photosCopiesto:AlisonEvans,FacilityManager,NWROTriciaMiller,PermitCoordinator,NWROTimBerge,DistrictOperationsSupervisorName(s)andSignaturesoflnspector(s)AlisonEvansNameandSignatureofManagementQAReviewerAmyJankowiak,MunicipalCompliance,NWROCarlJones,OutreachOperatorTrainer,SWRO,e-copyonlyCentralFiles,SalmonCreekWQ6.1Agency/Office/TelephoneWADept.ofEcology,NWRO,(425)649-71603190160thAveSE,Bellevue,WA98008-5452Agency/Office/PhoneandFaxNumbersWADept.ofEcology,NWRO,(425)649-72073190160thAveSE,Bellevue,WA98008-5452DateZ/tctloqDateANNOUNCEDInspection9.00-Flow8.00---65%ofDeslgnlimit7.00•···•·•··DeslgnlimitQ6.00(.!)::&Q5.00u:...c4.0041ew3.002.001.000.00WADepartmentofEcologyPage3of11--·-·--;;;;---,--InspectedbyErrorlReferencesourcenotfound.·InspectionReportPermit#WA002277-2AppendixAComplianceInspectionReportFormINSTRUCTIONSSectionA:GeneralInformationReportVersion:Newfor1•1version,AmendedforamendedversionsNPDESPermitNo.:Enterthefacility'sNPDESorStatepermitnumber.InspectionDate:Insertthedateentrywasmadeintothefacility.Usethemonth/day/yearformat(e.g.,06/30/04=June30,2004).InspectionType:Useoneofthecodeslistedbelowtodescribethetypeofinspection:AComplianceEvaluation(non-sampling)GComplianceEvaluation(Sampling)Re-Sample8ComplianceEvaluation(sampling)HReconnaissanceCEnforcementCaseSupportIReconnaissanceDMultimediaJSiteVisitEPretreatmentComplianceInspectionKOtherFComplianceEvaluation(nonsampling)Follow-upInspectorCode:Useoneofthecodeslistedbelowtodescribetheleadagencyintheinspection:E-EcologyInspectorL-JointEcology/LaboratoryAccreditationInspectors-EcologyLeadH-JointEcology/Health-EcologyLeadT-JointEPNEcologyInspectors-EPALeadJ-JointEcology/EPAInspectors-EcologyLeadC-ContractororOtherInspectors(SpecifyinRemarksColumns)FacilityType:Useofoneofthechoicesbelowtodescribethefacility.Public-MunicipalPubliclyOwnedTreatmentWorks(POTWs)Private-MunicipalPrivatelyOwnedTreatmentWorksRemarks:Thesecolumnsarereservedforremarks.InspectionWorkDays.:Estimatethetotalworkeffort(tothenearest0.1workday},upto99.9days,thatwereusedtocompletetheinspection.Thisestimateincludestheaccumulativeeffortofallparticipatinginspectors;anyeffortforlaboratoryanalyses,testing,traveltimeandpreparationtime.Thisestimatedoesnotrequiredetaileddocumentation.FacilityEvaluationRating:Useinformationgatheredduringtheinspection(regardlessofinspectiontype)toevaluatethequalityofthefacilityselfmonitoringprogram.Gradetheprogramusingascaleof1to5withascoreof5beingusedforveryreliableself-monitoringprograms,3beingsatisfactory,and1beingusedforveryunreliableprograms.PhotosTaken:YesorNoSamplesTaken:YesorNoLeadEcologyInspector:Enterleadinspector'snameSection8:FacilityDataThissectionisself-explanatoryexceptfor:"OtherFacilityData,"whichmayincludenewinformationnotinthep'ermitorPCS(e.g.,newoutfalls,namesofreceivingwaters,newownership,andotherupdatestotherecord),e-mailaddresses...;and"EcologyStaffOn-Site",whichmayincludestaffnames,titles,phonenumbers,ore-mailaddresses.SectionC:AreasEvaluatedDuringInspectionCheckonlythoseareasevaluatedbymarkingtheappropriatebox.UseSectionDandadditionalsheetsasnecessary.SectionD:SummaryofFindings/CommentsSupportthefindings,asnecessary,inanarrativereport.Usetheheadingsgivenonthereportform(staffing,back-uppower)asappropriate.Referencealistofattachments,suchascompletedchecklists,photos,labreports,etc.Useextrasheetsasnecessary.LINKSANDINFORMATION"InformationalManualforTreatmentPlantOperators";February2004;bytheDepartmentofEcologyPublicationNumber04-10-020:http://www.ecy.wa.gov/pubs/0410020.pdfThemanualwaspreparedtohelpwastewatertreatmentplantoperatorscompleteandsubmittheirDischargeMonitoringReports(DMRs)andotherannualreportstotheDepartmentofEcology.Torequestahardcopy,contacttheDepartmentofEcology,PublicationsDistributionCenteratP.O.Box47600,Olympia,WA98504-7600orat(360)407-7472.Updatestothemanualareincludedonthewebsiteversion.Ecology'sWastewaterandReusewebsite:http://www.ecy.wa.gov/programs/wq/wastewater/index.htmlEcology'sOperatorCertificationwebsite:http://www.ecy.wa.gov/programs/wg/wastewater/opcert/index.htmlEcology'sLaboratoryAccreditationwebsite:http://www.ecy.wa.gov/programs/eap/labs/labsmain.htmlEcology'sBiosolidswebsite:http://www.ecy.wa.gov/programs/swfa/biosolids/Ecology'sOperatorOutreach:CarlJones(360)407-6431;cjon461@ecy.wa.govEcology'sMunicipalComplianceSpecialist(NorthwestRegionalOffice):AmyJankowiak(425)649-7195;ajan461@ecy.wa.govEcology'sWastewaterOperatorCertificationCoordinator:PoppyCarre(360)407-6449;1-800-633-6193(withinthestate)poca461@ecy.wa.govEcology'sBiosolidsCoordinator(NorthwestRegionalOffice)"MariettaSharp(425)649-7258mars461@ecy.wa.govReportingSpills/Overflows/Upsets/Bypasses/LossofDisinfectionIMMEDIATELY:Ecology's24-hournumber:(425)649-7000toreportaspillDepartmentofHealth-ShellfishProgram24-hournumber:(360)236-3330WADepartmentofEcologyPage4of11Inspected01/26/09byErrorlReferencesourcenotfound.

# PHOTO

#

: 01

DATE: 1/26/09

TAKEN

BY: CARL JONES DESCRIPTION:

OPERATOR CERTIFICATIONS. PHOTO

#:03

DATE: 1/26/09

TAKEN

BY: CARL JONES DESCRIPTION:

STEP SCREENS. 

# WA Department

of Ecology Page

5 of

11



# Salmon

Creek WWTP 

# 1/26/09 Inspection PHOT0#:02

DATE: 1126/09

TAKEN

BY: CARLJONES DESCRIPTION: HEADWORK$-

STEP SCREENS

SOLIDS HANDLING. PHOT0#:04

DA

TE :1/2S/09

TAKEN

BY: CARL JONES DESCRIPTION:

SOLIDS COMPACTOR

FOR STEP SCREENS. 

# Insp

ec

t ed

by Car

l Jones,

Alison

EvansPHOTO#:05DATE:1/26/09TAKENBy:CARLJONESDESCRIPTION:INFLUENTSAMPLERANDREFRIGERATOR.PHOTO#:07DATE:1/26(09TAKENBY:CARLJONESDESCRIPTION:PRIMARYCLARIFIERS.WADepartmentofEcologyPage6of11SalmonCreekWWTP1/26/09InspectionPHOT0#:06DATE:1/26/09TAKENBY:CARLJONESFILEDESCRIPTION:INFLUENTSAMPLERANDREFRIGERATOR.PHOTO#:08DATE:1/26/09TAKENBY:CARLJONESDESCRIPTION:GRITCHANNELS.InspectedbyCarlJones,AlisonEvans

# PHOTO

#:09

DATE: 1/26/09

TAKEN

BY: CARL JONES DESCRIPTION:

RBCs. PHOTO

#:11

DATE

: 1/26/09

TAKEN

BY: CARL JONES DESCRIPTION:

SOLIDS THICKENER. 

# WA Department

of Ecology Page

7 of

11



# Salmon

Creek WWTP 1/26/09 Inspection PHOTO

#:10

DATE: 1/26/09

TAKEN

BY: CARL JONES DESCRIPTION:

RBCs. PHOT0#

: 12 DATE: 1/26/09

TAKEN

BY: CARL JONES DESCRIPTION:

SOLIDS THICKENER

WEIR. 

# Inspected

by Carl Jones

, Alison

EvansPHOT0#:13DATE:1/26/09TAKENBY:DESCRIPTION:SECONDARYCLARIFIER.PHOTO#:15DATE:1/26/09TAKENBY:DESCRIPTION:EFFLUENTSAMPLERANDREFRIGERATOR.WADepartmentofEcologyPage8of11SalmonCreekWWTP1/26/09InspectionPHOTO#:14DATE:1/26/09TAKENBY:DESCRIPTION:SECONDARYCLARIFIERWEIR.WATERISCLEAR.PHOTO#:16DATE:1/26/09TAKENBY:CARLJONESDESCRIPTION:EFFLUENTSAMPLERANDREFRIGERATOR.InspectedbyCarlJones,AlisonEvans

# , . PHOTO

#:17

DATE

: 1/26/09

TAKEN

BY: DESCRIPTION:

EFFLUENT

SAMPLE LOCATION. PHOT0#:19

DATE: 1/26/09

TAKEN

BY

: CARL JONES DESCRIPTION:

SOLIDS POLYMER

TANKS

IN BACKGROUND

. 

# WA Department

of Ecology Page

9 of

11



# Salmon

Creek WWTP 

# 1/26/09 Inspection PHOTO

#:18

DATE: 1/26/09

TAKEN

BY: CARL JONES DESCRIPTION:

FILTER

PRESS. PHOT0#:20

DATE: 1126/09

TAKEN

B

Y

: CARL JONES DESCRIPTION:



# In spected

by Car

l Jones

, Alison

EvansPHOTO#:21DATE:1/26/09TAKENBY:CARLJONESDESCRIPTION:DIGESTERPUMPS.PHOTO#:23DATE:1/26/09TAKENBy:CARLJONESDESCRIPTION:SOLIDSDEWATERINGCENTRIFUGE.WADepartmentofEcologyPage10of11SalmonCreekWWTP1/26/09InspectionPHOTO#:22DATE:1/26/09TAKENBY:CARLJONESDESCRIPTION:DIGESTERBOILER.PHOTO#:24DATE:1/26/09TAKENBY:CARLJONESDESCRIPTION:SOLIDSDEWATERINGCENTRIFUGE.InspectedbyCarlJones,AlisonEvans

# ..

PHO

TO 

# #:25

DATE

: 

# 1/26/09

TAKEN

BY: CARL JONES DESCRIPTION:

BACKUP GENERATOR 

# WA

Dep

a rtment

of Ecolo

gy Page

11

of

11



# Salmon

Creek WWTP 1/26/09 Inspection PHOTO



# #

: 26

DA TE: 

# 1/26/09

TAKEN

B

Y: CARL JONES DES CRIP

T

I ON: BATTER

I ES FOR BACKUP GENERATOR

. 

# I nspected

by Carl

Jo

n es, Alison

E vans

# For Collection System Overflows, Plant

Bypasses, Upsets, Loss of Disinfection

Contact IMMEDIATELY

1. 

# s 1 ' !

**~** 

# r l •

, 

# s r

**~** 

# r

**~**



# : E

**~** l 

# q 1 'I : ' I 1 l f 

# t 

# C 0 L 0 G Y



# ®

King County



# (recommended) 

# Dept of Ecology 24-hr:

(425) 649-7000 

# to report a spill



# Dept of Health Shellfish 24-hr:

(360) 236-3330(Main) 

# Or (360) 786-4183(Beeper)



# King County Health Department:

(206) 205-1151

Written follow-up report due to Ecology within 5 

# days of discovery- see Permit

for noncompliance notification and sampling details