RP07011563

PCHBPollution Control Hearings Board of the State of Washington

__ _i_m • - I _'[CEIVED • ,c,,_.,,,,,._ ' AUG -B , _01 &mthJcm41_m_Sm._.,t,Sub©.'_0 •_.,,,.,..w^:,.1,.4_I 3EPTOFECOLOGY m AnnKcnny,SeaiorPemdtSpecialist OCT - 1 2001 Wuh(ngtonDeps_mentof Ecolo_ NorthwestP_siona]Office 3190 - 160thAvenueSomhN.st ENV __L)_._v_L_',_T_L Bellevue, WA 98008-54SS2 HI_,A_I_O_ OF£][CE D_r M_, Kc_y: K/n_ County b pleued to have_mdtheoppose[t7 toassist the Depsrtmm[ot_cologyby making its technical review capacitytnd knowledgeof local st_water conditionsavailablefor the review of the Portof Seattle'sComprehensive$_ormwa_erManafmen: Plan (SMP)for Ma.q_ Plan Improvernen_s_SeaTscInset'nationalAirport.This e_'orthas set ancxcellent ¢kampleof how am_eand local8ovenunentcan workcooperativelyin addressingpressi_ issues _cin$ the region As with our prcv/ous reviewset'r_s project, it is imperatortokeepinm;-d the limitationsof the workthatwe have performed. First,this r_iew is limitedto ascertsinins_ theSMP attained mi_mu_ complimce withthe 1998Kbtg County $urfacz WaterDc_ibmManual, Compliance with the technicalprovisionsof de Dedgn Menualdo_ notmidpto allpotemial impacmof development andme.,,'_ providemfliciem informationm allow forapprovalunder othercodes and rqulat/ons. Compliancewiththe Design Manualis, however,s goodt_t i mwLydsrn_v_gatingthe impactsofvhis |I_SI and complexproject, i t It is also [mpomm_to rememberthatthh review is limited to those developmentactivities identifiedby the Portof Seaule asbeingMutes PlanUpdtxeImprovem_t_. Whileother projecu of varying masnttudc=e beingproposedfor this area,only thoseprojectsincludedin theformalS.MPsubmission,verereviewedfortt_ conunc_festa.No usump_onof coiu:me wivhthe technics]detailsor effectiveness of additionalprojectsshouldbe ms,,-,ed without our specific wrik_ conunent. Ourreviewers found this venion ofth_ SMP iS comisteat with dmwchnical requk_cuts of _.he King Count" Surface Water DesignManuaL The SMP demonstratest feasible¢oncepmsl su'_egy for complying with themhni_l provisionsor'theKinf Cosn_ Surface WaterDesz'_ .Manualand effectively demons_r=esthtt the proposedimprovementscould fullycomplywith Design Manual requiremenm. •-...- AR 011565 .,qJLAUG.2.2001!._ 1:2.Tp_ss497oes.. DEl_OF_-CO_ N0.127 P. 30o3• - . • • :1.'_"..."'. ..- , ,,. "_- -o - August3, 2001 Page 2 ,! o EnclosureI providessencralcocnment_onhowTheSMPrespondsto…
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