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ENVIRONMENTAL HEALTH DIVISION <br /> 304 E. Weber Ave.Third Floor Post-it®Fax Note 7671 Date A P".go'. <br /> P. O. Box 388, Stockton CA 95201-0388 <br /> To <br /> Approved 2 l t From I <br /> Denied , ❑ f Co./Dept. t Co. <br /> W/ Conditions tsF_-- Phone# Phone# <br /> Fax# <br /> Date4-ii-cm <br /> 4-I I-c 1 by iZU-3 VZEx� <br /> yeologicaCTechinics Inc. µy <br /> - :4fcduta cxf,tamoa 95331 <br /> �• <br /> WLDP— TO F L Nett-(Z NII SVS jt'y17 f fzagJ sse:u ssa en <br /> b t3 tG r i , ►7LEA6G c-ALLO LNle <br /> T-1tE. est M P TE.6 ,Ppm v6LUMZ Interim Remedial Action Pian <br /> �U2e vowww— ey-C h E Fortner Moresco Property <br /> �. 16865 Gawne Road <br /> Stockton,California <br /> (�F P2t- O!JE too 12E vo[t}rrt+C E y{,��l�fCl E Project No.251.3 <br /> April 8, 1997 <br /> O� St3t(... 1�ftPcP2 EI'�t{ ►�`I FcPQ - <br /> t✓�ffC�u1E t2t-'nEl)tP.� ��+oceK.G�5 . <br /> 1.0 <br /> INTRODUCTION <br /> P1ZE$E1�lT D l �E�Ir�n? 5Pr5 <br /> J On behalf of Mr.Michael McGranahan,Trustee In Bankruptcy,Geological Technics Inc.has <br /> 2 1L AQ P J�p�/t4�, performed environmental assessment work at the Former Moresco Property located a[16865 <br /> . Gh�awne load in Stockton, <br /> _l Nom" once used <br /> �j The su ect property hada 500 gallon capacity unde �utd sto a tank(UST) <br /> 'L. 1/ QsQ i CP �C�ar.i (r.lb�)� I�Vt' for residential automotive fuel supply. The UST was removed on November 15, 1994 and <br /> significant concentrations of gasoline range petroleum hydrocarbons were detected in a soil <br /> PLFtiGG WLALT D 11.1[7�4�LOIU i,f sample collected beneath the former tank cradle at depth of 17.5 feet below ground surface i <br /> (bgs). This information was reported to the San Joaquin County Public Health Services <br /> Go1•c�6D'c�? fit' Environmental health Division (SJCPHSEHD) in the Geological Technics Inc. TankWW trT 3-C g; <br /> Removal Report, 16865 Gawne Road dated December 9,1994. j <br /> A subsurface investigation designed to define the vertical and lateral extent of the impacted ; <br /> `jT�j Vl tr�1� 'S t r ) I IdC�1/ :; area was proposed in the Geological Technics Inc. Site Characterization Work Plan dated <br /> (u March 14,1995."The Work Plan was approved by the SJCPHSEHD on April 3,1995. <br /> t t'�el� LONSMs� An initial subsurface investigation was conducted April 5 to 7, 1995 and a remobiliexti t <br /> occurred on April 21,1995. The results of this investigation indicated that the vertical extent <br /> at or near the point of release was defined. The lateral extent remained undefined to the north <br /> and east. This information was documented in the Geological Technics Inc. Soil Boring <br /> ?Installation Report dated May 12,1996. I <br /> Additional site characterization work was conducted on June 17& 18, 1996. During this <br /> Lt)klc+� M Pte( f AL1 GCS work three additional soil borings were drilled and soil samples co[Iected. In summary,low <br /> i levels of BTEX compounds were found in SB-5 and 6,indicating they were at or very near II <br /> E-/�i VeX35 p i 5v the lateral extent of the impacted soil,and relatively high levels of MTBE were detected in <br /> _ one interval from SS-7. This data and a discussion may be found in Geological Technics Inc_ <br /> S l:ko" (�V I�I.�m Site Characterization Report dated October 11,1996. <br /> k5umR+0-1�C �t Lcse• <br /> A <br /> 71 ��t7� >ac 17tI1��7 LtSTI sem' sP <br /> O F YYt oA1,r A+z ti r�G� C t)t4vy(t. <br /> �V <br /> tQvtp�rlEl Inrct:�fDC � tn�t�lt7LStdQ�{�— 773 '.. <br /> c� f r <br /> 6'ID <br /> WL L-r <br /> e&>')tv to'rrr <br /> I'nTbe : �fLe.�Z <br /> 15 <br /> ctoalrv2 1 ,c aZb t,s ��s � <br /> SV U> 'rp S�G71E� �tluatll � <br />