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04/04/2006 10:43 2094683433 EHD PAGE 02 <br /> JAAFE 11244 Pyrites Way.•Gold River,CA 95670 <br /> E N V I R 0 TE C H , INC . 205 APR —3 Pf f h8a 5."51.0174• Fox 916.851.0177• Toll Free 1.800.242.5249 <br /> SAN j0Ai]Uiid co idT'd <br /> ENVIR0NMEHTAL SAN JOAQUIN COUNTY <br /> March 30, 2006 HEALTH DEPARTMENT <br /> ENSnRONIrnENrAL tiEAI.TH DEPAR UAliE]trl. <br /> 304 E WEBER AVE THIRD FLOr Xt <br /> Mr. Michael Infuma STOCKTON CA 95202 - <br /> San Joaquin County Environmental Health Department 498 3420 <br /> 304 East Weber Avenue, aro Floor Appvved <br /> Stockton, California 95202 %ft d=V= Seems <br /> o DMIppoovet sae PAmeft <br /> Subject: Interim Remediation Plan Remarks <br /> Flag City New West#1003 <br /> 643.7 West Banner Street, Lodi, Californias <br /> Apex Project No. NWP01.004 <br /> Approval extends only to that v rich Is show and c c1.3Cfj 4 <br /> hereon and does not authorize or approve amp coni s+41an a <br /> Dear Mr. Infarna: e •v!a,'scr. 're:. c�merts of stale laws or local crUinanc <br /> Apex Envirotech,,Inc. (Apex)has been authorized by New West Stations (New West) to submit <br /> this letter addressing the interim remediation measures we discussed in our meeting earlier today. <br /> Due to the length of time anticipated.for approval of the NPDES permit,Apex has scheduled <br /> InStrat to perform batch extractions at the site starting the week of April 3, 2006.. <br /> Approximately 5,000 gallons of groundwater will be vacuum extracted from well EW-4 on a <br /> weekly basis. Apex personnel will be,on-site during the extractions to record the volume of <br /> water extracted and collect two sets of groundwater.'samples',.one pre-extraction and one post- <br /> extraction. These data will be tabulated and extraction mass will be calculated. Apex will <br /> submit this information to the San Joaquin County Environmental Health Department (SJCEHD) <br /> in the quarterly monitoring reports. Batch extraction will continue until the groundwater <br /> pumping and treatment system is fully operational of until Apex and SJCEHD deem it is <br /> unnecessary. . <br /> Apex proposes to install additional monitoring wells on and offsite to vertically and horizontally <br /> define the dissolved phase methyl tertiary butyl ether(MTBE)plume possibly associated with the <br /> New West site. Upon SJCEHD approval, Apex will prepare a workplan report detailing the <br /> proposed well installations submitted by April 21,2006. <br /> Michael S. Sgourakis will be Apex's new contact person for the site and will be responsible for <br /> managing the project with the assistance of Ms.Jennifer Worsley. <br />