EXH0075017714

PCHBPollution Control Hearings Board of the State of Washington

Sent: Wednesday, May 30. 2001 4:38 PM To: 'Paul Agid' Co: Nye, Roger Subject: Redline revisions to Preferential Flowpa_ memo Per our multiple phonemessages,I attach my redline edits to your May 8thdraft of the preferential flow path technicalmemorandum. Don'tbe alarmed by the extensive edits and deletions. There are several organizational suggestions. Also, the edits focus on the role of utility linesas preferential flowpaths. The large figures producedfor the ACC-legislators meeting will be an integral part of the technical memorandum. Pleaseredo the memorandumandsend it to me for adjustments. lI will be out of the office May31e and June 1_. Thank you, Ching-Pi _:.." _'". 0 FIowpathM_ 20_ Redline,DOC DOEcJ/17/01 o_21 AR 017714 From: Port To_...Z•Ecology Dale: May 30'h,20oI Subj" TechnicalMenlor_ndum. ConstructionoftheThirdRunway andPrefcrcntialGround-WaterFlov,'pathAnalysis. z_j i..i ,lj_J,,.,Ja • • The purpose section needs to be rewrittento addresspreferential flo_,'paths via the utilities and perched zones. Limit statements about contaminant transportby ground-water flow in the OVA to known monitorin_ results. (Predictions of contaminant transportin the OVA will be estimated by the numericalmodel.) alh_ • 4. h ml,_ • A t, t_ _m_.rail • _v • Cf'h: m_,;.av _. I. , a........... :__ A. ExistinEeConditionswithin the AOMA. I As describedin the May 1999 Agreed Order,the AOMA is the area of the Aaixport where most I aircraft fueling andmaintenance operations have historically occurred. Within the AOMA, contaminatedgroundwaterexists in several localized, discrete sites as a result of nearly fifty years of Aairportoperations. The boundaries of the contaminated groundwater have been J defined by site investigation ,4:,,, that were…
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