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302June-1997 <br /> AGE NC Project No: 07A -2 <br /> Page z`©f <br /> cci cents ons of T PH-d�n a seal s pies,$W-OR st a was gated by h' IHS-EIS.en 11 March <br /> 4992 A;v. ikioil UST was pfesent on the site as Mmoviiaa id.elo§cd by the PIS I D'. <br /> Addidoitally;a set l Ydrauhc-ltfts Ye also r to the f+a er trarisportat�on��iiikldii& the site.'- <br /> The lad trondition'w not o tair 'br +� C latts.are fillL fluid: Itis likely that <br /> hytlraul c:0il reniaitts' n the Jiftsacid Ii re 0"; <br /> 1 ' -dated X1 1mhdbJo Nes <br /> viA' etfi �3tisa me tal <br /> I ivistan{lel I �_lrl l ed that'd�rthft.Site a srta df soil and.giournd water iii the <br /> vicinxt�+of the formerJS'f'was rued 'he -laH7, ttrt ` rxs site closure <br /> Soil samples were ccilt Cie I from t Leas. ac ilium st-D gt area r ear e t ansportat'io building; , <br /> � F. <br /> t ie. pdraul c lift aha.with n e tta sp tion-bu3Iding; and 'flit;'cnl water s¢parator area: I;aw <br /> concen ons_of pe sal m'l ydrpcarl�ps Vere detected lila soil se 16 colketed from the-drum <br /> storage .jW hy&aWic lift areas : 'o recoyenibl -peis dei hy4r€ic rt ns'{TRPH)we.e detected <br /> at concenfratii?�s&hio as'13l}milltgrar ispeF;kriogr t{ gJ[eg parts per mitlion 'p rm). <br /> 2 3. REGIONAL_ORL' It:811VATION <br /> 'fie esfi nated'depth to gtt}u l'w t r at dris property is.approximately 30 feet below surface grade`. <br /> (b8);laasci on iaot fraM :inesofquali ;c 'aterlis, uI1:I993 pulsdiy tlZe <br /> Joaquin t✓otnty Floodorrol �sict acid-mater Covatls Dict. The pre vailtng ground <br /> vvater flour eastern Stockton flows getier�tlly:to z�orthe st, +Yliil local ed ground water flow <br /> mAy vary;dttngieristtttriner cycles <br /> •#. so WORK: . <br /> 3.1. PROBING Alm SAA 'l:Il�dG <br /> su sttr#`ace:investigat€on At ihelite ts'ineces w to'."ile�c�e the ''item <br /> t I and,vertical,extent ' <br /> re. amm hydro bon i ac, !,,S ill angor groiuid_°u *r Two methods`can be uUlized at the 14H . <br /> sit:Wnventtonal,hol es stems air dulling;or'chmet'pt�sls'rti&hod Ta complete the.investigatl <br /> s sainplesfwill hake ts ,lae cIlected` szde a btailg.on the property I Furtlhermore,ars stated <br /> iii Section'2 3., iui weer dem a#fi sx#$is estrr d t�►°.be 4%PWXI ratefy 30,feet:Therzforn <br /> W; <br /> - n n, uspV`direct-push tri thYod dor tie ad�ran�eii€of soil prate Dosings <br /> t <br /> fly,AGI P apciseS to adva=seven:so *6be l sings at the <br /> site.,l"owr l probe,'borings Swill <br /> x <br /> be advaiictd to a depth of fiifteei feet below surface.grade.(bsg);ins-id'e the'former txansportatton <br />