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Z .... <br /> U-- <br /> 7 - <br /> 'P <br /> N; <br /> A, <br /> orkTlan-Addendu'm <br /> PACIFIC AUTO CENTER <br /> ' 25355'.Nort1fHighway 9,9;-Aiamp6, CalifiYrn'ih'x'i"-l .- ,-."t <br /> �A3. c C aq_-W <br /> 1.0.�% ;-INTRODUCTION-­ -� ,V' <br /> . <br /> L! <br /> GE a <br /> d <br /> -of Mr.. Veer -) h s prepare the At the request er. Singh, GeoEhvirbnniental,�MC ,(A <br /> eficlosed"Work-Plan Addendum for the'Pacific Auto Ceiftdf siid;I(fedted!, t-,25355 NorthHighway_99 <br /> Acampoation of thi site i histiated.'on Fig&e'-l'i--,-L"6cdtion Map A plan of the , <br /> Calif6hiial. The location s il <br /> A';e -site V <br /> t is illuttibit6d on Figure,2-mtSW <br /> ' � tinue a§s6ssmentrof the V6 <br /> __­ rtidAI lateral . ...... <br /> Thig-.W6rkPi"an-Adden'dumis.ptoo.osed t6don <br /> potential petroleum hvdrodarbdn impacts,at the s'ite,'and'Js`p'r'epared-as-required by the San Joaquin <br /> t <br /> County Public-l-lealth"SerywesEnyifonmental -Health Lhvision-, (PHS!;EHD) 4I1fe1 <br /> investigation estigation is not beiiig- 'r'e'quired by any regulatory agency- <br /> 4a <br /> iz" <br /> Q- <br /> 20 �BACKGROUND <br /> _ <br /> The site is located in a rural area of no an em, Joaquin County,'no Ttfi-o f-theCi <br /> , <br /> intersection of Highway-99 North and_C,.61lier,Road- -The-site is presently as.an automobile <br /> repaira-Ili <br /> f, ci try. ------ <br /> IT <br /> 2.1 'INDERGROUND S- 'TO k A dii-,TANK REMOVAL <br /> z <br /> _X <br /> T <br /> AGE has been Jinformed-that three underground storage tanks (USTs);were removed from the site ` t' fi <br /> in-1918.The former'.contents;and-.volume pf.'each UST is not known,however,the sitewas-f6ime-r& <br /> operated as a - <br /> *Mobil gasoline station The <br /> -.- -- <br /> Usts.w;ere apparently removedfrom an arra north of thedispinseu-islandsThe area is not <br /> fdrffidr' <br /> located--he���the-.-garakdarea-;Ith'eareqis notpaved and;, <br /> J paved. A.'former waste oilUST was pf6babl� <br /> has <br /> been'backfilled with soil and p6a`gravel ' <br /> 7 <br /> _4 AGE is unaware of any soil samples collected duringtheremovM,of the:USTs However,ffie former <br /> UST area was re-excavated' n 1988 and,according d6rding to fif6fffiaton d,-.fecords,provided to AGE by x <br /> no pet- encountered 'Mr. Singh roleumlis, <br /> 0— <br /> 'q - <br /> URI <br /> 2.2. PRELIMINARY SITE ASSESSMENT,.T';-_,A3�.4 <br /> On 25 January 1999 AGEadvanced two--soil probngs at the site Probe bonngPlwas advanced <br /> within the former USTexcavation`foldej <br /> of 50-feet bsg -a vance <br /> immediately adjacent to the former waste OHWSTs.-S _collected t I foot intervals in <br /> z <br /> each prbbeboring""� <br /> Ar <br /> Advanced'Ge"ot'npronmentaione <br /> " <br /> 4r <br /> Z;i� 4 <br />