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ENVIRONMENTAL HEALTH DEPARTMENT <br /> SAN JOAQUIN COUNTY <br /> Gnnn.tL Hn•a ATIIS UUS. rrun, <br /> ➢,,n» 304 Fast Wehei Avenue Thud Flom C.rl➢a"n,.a R h H 5 <br /> AJ01—REB S $uxkton C41if,mie 952022708 LI'kcH"e"'n,RenS Ror <br /> "',,Y k.nrinA"'Tnhll'�°r" Tdi phune (209)468 3420 N.,I..w , <br /> F .nn x e R s <br /> eCn,REHS Rc M<Cjn11m RE13S <br /> F. (209)4(A0138 <br /> LDL( Mak aacxllm k F H 9 <br /> OIL <br /> `�k SEP 16 z <br /> teoorta PRESIDENT � _ _ Utl5 <br /> NEW [PEST PZTROL917N <br /> 1531 16'N STRHET <br /> SACRAKENTO Cit 95814 FILE E C 0 p YlSde _ 1 <br /> RE Shell Branded!New West Gas#1003 4 L l Code 1705 <br /> 6437W Banner Avenue <br /> Lodi CA 95242 <br /> San Joaquin County Enwronmental Health Department(EHD)has received draft <br /> laboratory date from ground water sampling that occurred September 12 2005 at <br /> the above referenced site Ground water analytical data for samples oollected <br /> from offsite down gradient monitonng well MWaiB Indicates that MtB6 is <br /> present to this second zone welt at levels that pose a danger to the community <br /> service area(CSA)drinking water well CSA 31 located approximately 600 feat <br /> down gradient of MW-48 <br /> In previous communications with your consultant Apex Envuo-Tech EHD <br /> advised that preparations for immediate actions should start so that If MtBE was <br /> confirmed in monitoring well MW-4B you would be prepared for the requirement <br /> to submit a work plan to instal}additlonal monitoring wells to determine the lateral <br /> and vertical extents of the MIME plume <br /> You are hereby directed to submit a work plan for additional subsurface <br /> Investigation to deflne the lateral and vertical extents of the ground water <br /> plume from the unauthorized release from your underground storage tanks <br /> (UST) The work plan Is due at EHD by October 17 2005 <br /> In addition EHD requires you to start interim remedial action as soon as possible <br /> to halt the MI61=in the ground water from migrating off your site A proposal that <br /> describes the method(s)you plan to take should be submitted to EHD <br /> immediately <br /> EHD requires immediate initiation of ground water sample collection and analysis <br /> from the two endangered CSA wells on a monthly basis Please contact San <br /> Joaquin County Public Warks Utilities Maintenance at(209)468 3090 24 hours <br /> prior to sample coltecuon to obtain access to the wells <br /> • <br />