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RUGRO WEST, INC. <br /> - -- --- -- �" "-- 1050 Melody Lane,suite 160 <br /> Roseville,California95678 <br /> Tel: (916)782-2110 <br /> January 15, 1997 FAX: (916)78s-7830 <br /> Proposal No. 9647-0770 <br /> Pamela Lopez <br /> clo Bob Holiday <br /> P.O. Box 393 <br /> Thornton, California 95686 <br /> Subject : Proposal for Additional Ground Water Assessment <br /> Lopez Property <br /> 26500 Nowell Road, Thornton, California <br /> Dear Mr. Holiday. <br /> Fugro is pleased to submit this proposal for additional ground water assessment to be <br /> conducted at 26500 Nowed Road, Thornton, California (Figure 1). The proposal includes a purpose <br /> and objective, scope of work, and attached cost estimate for the proposed assessment to be conducted <br /> at the subject property. -- <br /> Purpose and Objective <br /> This proposal is being submitted in response to San Joaquin County Public Health Services, <br /> Environmental Health Division (PHS/EBD), letter dated January 3, 1997, In their letter PHS/EHD is <br /> requesting additional information to-assess the mobility of contaminants, in order to demonstrate that <br /> this is a "Low Risk Ground WateCO. e". The PHSIEHD is concerned that the vertical migration of <br /> contaminants may not be detected in the shallow ground water wells on site. <br /> Fugro proposes to install one deep ,ground water well to further delineate the vertical extent of <br /> contaminant migration. One soil sample will be geotechnicaily analyzed to define aquifer parameters. <br /> To identify potentially sensitive receptors/the ground water well (not in use) located on site will be <br /> sampled, and a diinldng water well survey will be conducted within a 2000 foot radius of the subject <br /> property. The proposed scope of services required to complete the project objective are described <br /> below: <br /> Background <br /> The subject site is a private residence purchased by Nis. Lopez in 1979 with an existing 500- <br /> gallon-capacity gasoline UST on the property. According to the previous owners, the UST had not <br /> been used for 10 to 15 years. On October 9, 1989, the UST was removed. One soil sample was <br /> collected from the base of the excavation and analyzed for the presence of total petroleum <br /> A member of the Fugro group of companies with offices throughout the world <br /> 96470770-PHZ <br />