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F <br /> File No 20-3769-01 k'g KLEINFELDER <br /> November 21, 1994 <br /> t <br /> Y <br /> REQUEST FOR CONTRACT SUPPLEMENT <br /> ADDITIONAL SOIL AND GROUNDWATER ASSESSMENT <br /> WEST CLAY PROPERTIES COMMERCIAL SITE <br /> 639 WEST CLAY STREET <br /> STOCKTON, CALIFORNIA 95206 <br /> (APN 147-071-10) <br /> INTRODUCTION <br /> Kletnfelder is pleased to present this request for contract supplement to West Clay Properties <br /> This request was developed after discussions with Mr Dan Silva and Ms Michelle L Manan. <br /> of West Clay Properties and Mr Michael Collins, REHS of the San Joaquin County Public <br /> Health Services, Environmental Health Division (SJCEHD) using Kleinfelder's current <br /> understanding of the site conditions, and is a preliminary understanding of the San Joaquin <br /> County Environmental Health Division's desires and requirements We prepared this request <br /> based on information usually requested in a workplan by the State of California Regional Water <br /> Quality Control Board Central Valley Office (RWQCB), and the SJCEHD <br /> Kleinfelder is committed to providing a high level of service to its clients, commensurate with <br /> their wants and needs If a portion of this proposal does not meet the needs of the client, or if <br /> those needs have changed, Kleinfelder stands ready to consider appropriate modifications, <br /> subject to the standards of care to which we adhere as professionals Modifications such as <br /> changes in scope, methodology, scheduling, and contract terms and conditions may result in <br /> changes to the risks assumed by the client, as well as adjustments to our fees We look forward <br /> to the opportunity to serve you <br /> BACKGROUND <br /> The following information was summarized from numerous discussions with Mr Dan Silva <br /> and Ms Michelle Manana of West Clay Properties <br /> On May 31, 1990, one 1,000-gallon underground storage tank was removed from the site by <br /> Triangle, Inc Tank removal soil samples were obtained by Cal Water Labs of Modesto, <br /> California The results of analyses performed on the samples obtained revealed hydrocarbons <br /> to be present in the soil beneath the former tank location <br /> On October 7, 1993, the product line running from the former tank location to the dispenser <br /> (located just off the southeast corner of the shop building) was removed Samples were <br /> obtained during the removal by EMCON Associates of Sacramento, California The results of <br /> the analytical testing performed on the samples obtained revealed only trace concentrations of <br /> some fuel constituents <br /> ETH and tVC/94 <br /> Copyright 1994 Kleinfelder Inc Page I of 11 <br />