EXH0525023562

PCHBPollution Control Hearings Board of the State of Washington

The following comments on .theproposed draRNPDES pcmfit no. WA-002465-1 for SeaTac Airport aresubmittedtoyouonbehalfoftheAirportCommunitiesCoalition.Thisletter makestwomain points: • The draftpermit offers a blank che_k approval of furore disoharges at Imknown locations, Such a permit would allow the Port to pollute the state's waters with impunity, and wo_dd deprivetheStateanditscitizensthevitalknowledgeofwhereandhow thePort'sdischarges WillaffectStatewaters. • The reporting requirements of the permit must be revised to require the data needed to interpret dissolved metals concentrations. The Port of Seattle has requested a permit that allows the discharge of unknownp0Uutants, in unknown amounts, atunspecified locations, into unspecified receiving waters, at unknown times in the future.This request is obviously desirable for the Port's purposes, but it serves the people of Washington State very badly and must not be granted. It allows the Port to cause harm through pollution to beneficial uses of waters of the State, at any time, in any place where the Port chooses to operate. The modified permit should be specific as to the characterof discharged pollutants, the exact locations where discharges will be allowed, and the exact premises whi'ch arc intended to be coveredby thedischarge permit modification. The Statemust not abdicate its access to information, its oversight respomibility, and its citizens' oppo_mi_ forinformed review of the Port's discharge practices. Neither the existing permit nor the proposed permit require the permittce to collect or report water qualitydatathatarenecessarytoassertainwhetheragivenConcentrationofmetalsisincompliance withwaterqualitycriteria.NumericWat_ qualitycriteriaformetalpollutantsarca functionof hardness(WAC 173-201A-040).Hardnessdatashouldbe reportedon themonthlyDMR's (DischargeMonitoringReports)asfollows:I)theyshouldbebasedonsamplestakenconcun_tly withandfromthesamesourceasthemetalssamples;2)theyshouldbereportedonthesamepage asthemetalsconcentrations;3)themoaningofthedatashouldnotbcobscuredbytheuseofmedian valuesorothersunmmW statistics.To bringthisresult about,themodifiedpermit,Monitoring Kequirom©nts,s=_tion$2.A, Stormwat_r,shouldbe amendedby insertionofanextralinefor hardnessintheaccompanyingtable.NotecshouldbcamplifiedtoincludepointI)above.Hardness shouldbeanalyzedeitherbycalculationbasedoncalciumandmagnesiumconcentrations,orbythe EDTA method;thereportedresultsshouldsaywhichmethodwasused. 1o3 AR 023562 Bellmgham,Washiuglon .. FAX:360-676-1040 l'-…
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