SEPTIC INSTALLER TEST FOR WASHINGTON STATE (WOSSA) WITH ANSWERS RATED A+

SEPTIC INSTALLER TEST FOR
WASHINGTON STATE (WOSSA) WITH
ANSWERS RATED A+
ANSIm-mCORRECTmANSWERSmAmericanmNationalmStandardsmInstitute



BODm-mCORRECTmANSWERSmbiochemicalmoxygenmdemand,mtypicallymexpressedminmmg/L.



CBODm-mCORRECTmANSWERSmCarbonaceousmBiochemicalmOxygenmDemand,mexpressedminmmg/L.



FCm-mCORRECTmANSWERSmFecalmColiform,mexpressedminmnumbermofmcoloniesm100/ml.



LOSSm-mCORRECTmANSWERSmlargemon-sitemsewagemsystem



NSFm-mCORRECTmANSWERSmNationmSanitationmFoundationmInternational



O&Gm-
mCORRECTmANSWERSmOilsmandmGrease,mcomponentmofmsewagemtypicallymoriginatingmfrommfoodms


tuffsm(animalmfatsmofmvegetablemoils)mexpressedminmmg/L.



RS&Gm-mCORRECTmANSWERSmRecommendedmStandardsmandmGuidance



SSASm-mCORRECTmANSWERSmamsubsurfacemsoilmabsorptionmsystem



TACm-mCORRECTmANSWERSmTechnicalmAdvisorymCommitteemestablishedminmWACm247-272A-0400



TNm-mCORRECTmANSWERSmTotalmNitrogen,mexpressedminmmg/L.

,TSSm-
mCORRECTmANSWERSmTotalmSuspendedmSolids.mAmmeasuremofmthemtotalmsuspendedmsolidsminmamgi


venmsolution,mexpressedminmmg/L.



USEPAm-mCORRECTmANSWERSmUnitedmStatesmEnvironmentalmProtectionmAgency



Additivem-mCORRECTmANSWERSmamcommercialmproductmaddedmtomanmon-
sitemsewagemsystemmintendedmtomaffectmthemperformancemormaestheticsmofmanmon-
sitemsewagemsystem



Approvedm-
mCORRECTmANSWERSmAcceptablemtomthemauthoritymhavingmjurisdiction.mLocalmhealthmofficermormt


hemdepartment



BEDm-
mCORRECTmANSWERSmamsoilmdispersalmcomponentmconsistingmofmanmexcavationmwithmamwidthmgre


atermthanm3mfeet



BuildingmSewerm-
mCORRECTmANSWERSmthatmpartmofmthemhorizontalmpipingmofmamdrainagemsystemmwhichmstartsmfro


mmthemendmofmthembuildingmdrainmandmwhichmreceivesmthemdischargemofmthembuildingmdrainmandmc
onveysmitmtomampublicmsewer,mprivatemsewer,mindividualmsewagemdisposalmsystemmormothermpointm
ofmdisposal.mItmbeginsmtwomfeetmoutsidemthembuildingmwallmandmconveysmsewagemfrommthembuildin
gmdrainmtomthemremainingmportionsmofmthemon-sitemsewagemsystem.



Cesspoolm-
mCORRECTmANSWERSmamcoveredmholemormpitmformreceivingmdrainagemormsewage,masmfrommamhouse


mallowingmliquidmtomseepmintomthemsurrondingmrockmormsoil

,ConformingmSystemm-mCORRECTmANSWERSmanmon-
sitemsewagemsystemmofmcomponentmmeetingmrulesmof:mNewmconstructionmrequirements

Approvedmandminstalledmwithinmpreviousmrequirementsm

PermittedmbymWAC-246-272A-0420



CovermMaterialm-
mCORRECTmANSWERSmSoilmplacedmovermdispersalmcomponent,mmademupmofmmineralmmaterialmwit


hmnomgreatermthanm10%morganicmcontent.mCovermmaymcontainmorganicmsurfacemmaterial,manmorga
nicmlandscapermtomhelpmreducemandmcontainmsoilmerosion.



CutsmandmBanksm-
mCORRECTmANSWERSmamnaturallymoccurringmormartificiallymformedmslopemgreatermthanmonemhundr


edmpercentm(forty-
fivemdegrees)mandmextendingmverticallymatmleastmfivemfrommthemtoemofmthemslopemtomtopmofmthemslo
pe.



Departmentm-mCORRECTmANSWERSmWashingtonmStatemDepartmentmofmHealth



Designerm-
mCORRECTmANSWERSmPersonmwhommatchesmsitemandmsoilmcharacteristicsmwithmapprovedmcompon


ents



DesignmFlowm-
mCORRECTmANSWERSmMeansmthemmaximummvolumemofmsewagemamresidence,mstructuremormotherm


facilitymismestimatedmtomgenerateminmamtwenty-
fourmhourmperiod.mItmincorporatesmbothmanmoperatingmcapacitymandmamsurgemcapacitymformthemsyst
emmduringmperiodicmheavymusemevents.mThemsizingmandmdesignmofmamon-
sitemsewagemsystemmcomponentmismbasedmonmthemdesignmflow.

, Developmentm-
mCORRECTmANSWERSmThemcreationmofmamresidence,mstructure,mfacility,msubdivision,marea,mormsimil


armactivitymresultingminmthemproductionmofmsewage.



Disinfectionm-
mCORRECTmANSWERSmThemprocessmofmdestroyingmpathogensminmsewagemthroughmthemapplicationm


ofmchlorination,multra-violentmlight,mormozonation.



DistributionmTechnologym-
mCORRECTmANSWERSmanymarrangementmofmequipmentmand/ormmaterialmthatmdistributesmsewagem


withinmandmon-sitemsewagemsystem.



Drainfieldm-
mCORRECTmANSWERSmsubsurfacemsoilmabsorptionmsystem,mandmsoilmdispersalmcomponent




Drainrockm-
mCORRECTmANSWERSmcleanedmwashedmgravelmormcrushedmrockmrangingminmsizemfromm3/4"mtom2.5"


,mandmcontainingmnommoremthanmtwompercentmbymweightmpassingmamUSmNo.8msievemandmnommorem
thanmonempercentmbymweightmpassingmthroughmamUSmNo.m200mSieve.



Effluentm-mCORRECTmANSWERSmliquidmwastemdischargedmtomamsepticmtankmormothermon-
sitemsewagemsystem



ExpandingmClaym-
mCORRECTmANSWERSmmeansmamclaymsoilmwithmthemmineralogymofmclaymparticles.mClaymparticlesmex


pandmwhenmabsorbingmwater



expansionm-
mCORRECTmANSWERSmamchangeminmresidence,mfacilitymormsitemthatmresultsminmthemquantitymofmsew


agemtomexceedmthemoriginalmdesign