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I' WOMAN FAM <br /> ku <br /> Ma <br /> Problem Assessment Report December 5, 1989 <br /> �. USA Petroleum Station No. 65, Lodi, California AGS 87050-3 <br /> data also indicate that recovery time in wells IvIW-1, N1W-2, NIW-4, MW-5, and NIW-G <br /> ranged from 1 to 4 minutes, the recovery time in well NIW-3 was 10 minutes. <br /> f 'The relalivefy sinall'tesidiaf slratvdown did rapid"recovery time_,f_otma �i:iicl[eii# ail <br /> .rye ..r..�..e .,.. .... i <br /> ttre`ts•3ttsltrtissivity and Hydraulic cnnductivi`ty ii1'th� water bearing zane�pertetrs�tetf by:'t�ie:' <br /> arell§are reTati7elFfiigh:7�Evaluation of these parameters is generally beyond fife scope of <br /> r <br /> the type of test used. The geologic cross sections (Plates 16 and 17) indicate the water <br /> t <br /> t bearing zone consists of poorly-graded sands, silty sand, and clay. 'I'ite aquifer was logged <br /> t <br /> f as clay in borings S-1 and S-2 which were not evaluated in the bailer tests. Todd (1980) <br /> estimates the hydraulic conductivity of clay as 0.002 ft/day,silt as 0.08 ft/day, fine-grained <br /> I sand as 8.2 ft/day,medium grained sand as 39 ft/day and coarse-grained sand as 148 ft/day. <br /> _ t <br /> LiM <br /> - j <br /> its a ontammatio <br /> i <br /> The Map of Total Petroleum Hydrocarbons as Gasoline (Plate P-19) shows the lateral+ <br /> extent of TPH plume: e?filttest��rtraton'of'I' nsasahnc<�sifieev f <br /> ?i 'lle a soliern endoF. hwp[unipp� r;ta;etcti l� ec ropeiy <br /> �t14f �rtCariun. 5ve ems,�niits,blYdratrroJl�cnfair��nat�on.=f <br /> iwe1"ffin i• ;mI `exsaWau _ � P:t( <br /> _te. �tmc extc <br /> ` I.n , e�N1ap of Benzene Concentrations (Plate P-20) also shows approximately the <br /> 36 <br /> t <br /> x: . <br /> t. <br /> r <br /> F Applred GeOS stems- -- <br />