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10/01/2812 12:28 12098314430 COT } PAGE 62/06 <br /> 01 City of Tracy <br /> r 333 Civic Center P)aza <br /> Tracy,CA 95376 <br /> TRACY DEVELOPMENT& <br /> 1* ENGINEERING SERVICES <br /> MArN 209.831.6400 <br /> October 1, 2012 rnx 209.831.6439 <br /> www.dAracv ca.u8 <br /> San Joaquin County <br /> Environmental Health Department <br /> 1865 East Hazelton Avenue . <br /> Stockton, CA 95205-6232 <br /> Attu.: Adrienne Ellsaesser,RE14S Acting Program Director <br /> RE: Request to Retain Boyd Service Center Groundwater Monitoring Wells. <br /> 560 Tracy Boulevard,Tracy, CA <br /> CIP 71033 <br /> Dear Ms. Ellsaesser, <br /> The City of Tracy .has received from San Joaquin County Environmental Health. <br /> Department (EHD) the No Further Action Required Concurrence (EHD .letter dated <br /> December •7, 2011).for the Boyd Service Center Site. Your office will issue the Case <br /> Closure letter for our site upon the completion of the Monitoring Well Destructions work <br /> of the four existing groundwater monitoring wells. <br /> A portion of the Site ;Assessment work at the Boyd Service Center Site also included <br /> samplxug near the old Chevron pipelines that cross the site. These old pipelines may date " <br /> back to the early 1900s and investigation sampling revealed some petroleum <br /> contamination at the pipelines. This issue has not yet been resolved with Chevron and <br /> the existing monitoring wells are located down gradient positions from the old pipelines. <br /> The City requests retaining the four monitoring wells for possible future sampling for the <br /> pipeline issue. The. City acknowledges that upon resolution of the Chevron pipeline <br /> contamination.problem, the four monitoring wells will be destroyed under approved EHD <br /> permits. <br /> Ae <br /> ly, <br /> PE <br /> Project Manager <br /> Attachment <br /> cc: Chris Palmer, CMP Consulting <br /> Think. Inside the'liiangfO _ <br /> Received Time Oct. 1. 2012 12:42PM No. 1249 <br />