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ENVIRONMENTAL HEALTH DEPARTMENT <br /> SAN"JOAQUIN COUNTY <br /> �, Z <br /> Unit SuP ervisars <br /> f7� ` , Donna K.Heran,R.E.H.S. <br /> Director 304 East Weber Avenue, Third Floor Carl Borgman,R.E.H.S. <br /> .3 RDI <br /> Al Olsen,R.E.H.S. Stockton, California 95202-2708 Mike las W,Wilson,R. ,H,S. <br /> ' Douglas W.Wilson,R.E.H.S. <br /> Program Manager :Telephone: (209) 468-3420 Margaret Lagorio,R,E,H.S. <br /> <rsoR Laurie A.Cotulla,R.E.H.S. <br /> S. <br /> Program Manager Fax: (209) 464-0138 Robert M rcell s,R.E.H.S.. <br /> Mark Barcellos,R.E.H.S. <br /> JAMES TAYLOR ROBERT MENTELOS <br /> CONTI GROUP COMPANIES INC PENNY NEWMAN GRAIN <br /> 2 PRUDENTIAL PLAZA 1805 HARBOR ST <br /> 180 STETSON DRIVE STOCKTON CA 95203 <br /> SUITE 2800 <br /> CHICAGO IL 60601 <br /> RE: CONTINENTAL GRAIN CO Site Code: 1132 <br /> 1805 HARBOR ST <br /> STOCKTON CA .95203 <br /> WORKPLAN: Site Investigation lY/ork Plan (pWosa1_f rchanUesJ.. DATED: April 17,2003 <br /> PREPARED BY: Haley&Aldrich,Inc. _ <br /> APPROVED (with conditions. See Below) <br /> ADEQUATE AND NECESSARY ELEMENTS OF THE WORKPLAN (H&S <br /> 25299.37,subd.(c)(3).): <br /> 1. Relocate the boring from the original position near the former tank to twenty feet <br /> further to the northwest, and advance to a depth necessary to collect two consecutive <br /> soil samples of non-detect by field indication. <br /> 2. The two borings in the center,of the former tank will be installed to a depth necessary <br /> to collect two consecutive soil samples of noxi-detect by field indication. One boring <br /> will be converted to MkV-7 screened from 30 to 35 feet bsg. <br /> 3. Increase number of shallow borings from 10 to up to 18 in a grid pattern depending on <br /> field indications. <br /> 4. Resurvey all old wells and new wells.. <br /> COMMENTS AND CONDITIONS <br /> 1. Provide a properly calibrated flame ionization detector(FID) for field detection of <br /> diesel. Photo-ionization detectors may be inadequate for detection of diesel and other <br /> long chain hydrocarbons. f <br /> 2. Submit 589 fee and well boring permit application befJre scheduling work. <br /> 3. Schedule work at least 48 hours in advance. <br /> 4. Selection of all samples to be submitted for laboratory analyses must include San <br /> Joaquin County Environmental Health Department comment and agreement. <br /> 5. Implement proposed work by June 15,2003. <br /> DATED May <br /> 1 2003 BY C c <br /> c: RWQCB,Central Valley Region--James Barton <br /> c: Haley&Aldrich—James T.Wells <br /> Y <br />