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April 29, 39e,8 <br /> PW 88-4924.03 <br /> The Southland Corporation <br /> 7-Eleven Stores <br /> P.O. Box 404 <br /> Pleasanton, California 94566-0040 <br /> E� <br /> Attention: 1X. Hal Miller <br /> Gentlemen: <br /> i-ropos& <br /> s Phase IV <br /> Investigation for Preliminary and <br /> Problem Assessment Reports i <br /> 7-Eleven Convenience Store <br /> 455:West Grant bine--goad <br /> ` Tracy, California <br /> INTRODUCTION <br /> +� i <br /> Harding Lawson Associates (HLA) is-pleased to present this <br /> proposal to provide a Phase IV invei.tigation at the conve- <br /> nience store at 455 WMst :Granit Line Road, in .Tracy Califon- <br /> I n a: The Central Valley Regional Water Control Board <br /> f� <br /> i (CVRWQCD) has required_ that a Preliminary Repc9rt and a Prob- <br /> lem Assessment Report be completed before remediation of <br /> petroleum hydrocarbons in .soil or ground water can be initi- <br /> ated. (she CVRWQCB requirements for each of these reports <br /> L \ are presented in the Appendix A) , <br /> The purpose- of--this- phase of 'investigation fs to satisfy the <br /> reporting requirements .of_. .the CVRKQCB so that we may pro <br /> s peed with remediation with this concurrence. As re ired by <br /> V. E the CVRWQCB our Ph ' IVinvestigation will .includedata <br /> collection, delineation of the horizontal- and .vertical ex- <br /> tent of petroleum' hydrocarbons in soil and� round water, an en in 4 <br /> I g eFaring'feasibility analysis of remedial alternatives <br /> ! ,.and fulfillment of.;CVRWQCB reporting requirements for the <br /> Praliiinar! and Froblem Assessmen. <br /> Reports. Upon completion <br /> of these bas7ss; we will issue a report summarizing the work <br /> completed in this phase. <br /> Enpinoors 1355 Willow Way Telephone Arizona Colorado Texe:, <br /> and Suite 109 415/687 9860 ' Alaska Hawaii <br /> Gaoapersls Concord.CA 94520 <br /> California Nevada. <br /> r <br /> i n <br />