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Wright <br /> Environmental <br /> Services Inc. <br /> � Q <br /> 'Construction ♦ Engineering ♦ Remediation <br /> � II <br /> NOV 1 <br /> November 7, 2001 <br /> 6 '2001 <br /> Project No. 4669 ENVIRONMENT HEALTH <br /> PERMIT/SERVICES <br /> M&M Builders Supply <br /> P. 0. Box 1107 <br /> Tracy, CA 95378-1107 <br /> Attn.: Mr. Shawn Kelly <br /> Re: Additional Site As Investigation and Monitoring Well <br /> Installation and Sampling, M&M Builders, 8111 West 11th Street, <br /> Tracy, CA; PHS EHD Site Code 1530 <br /> i <br /> Dear Mr. Kelly. <br /> Y. <br /> Wright Environmental Services, Inc. (Wright) has completed the work for the <br /> -� Preliminary Site Assessment investigation at the above referenced site located at 8111 <br /> ' West Eleventh Stkt, Tracy, CA (see Figure 1). The purpose of this work is to ascertain " <br /> the depth to groundwater and identify suspected petroleum contaminants in soil and <br /> groundwater near and around the former tank pit areas as required by the San Joaquin <br /> County Public Health Services Environmental Health Division (PHS EHD) in their letters <br /> dated August 16, 1999 and December 29, 1999. <br /> Background <br /> Two underground storage tanks have been removed from the site; one 1,000-gallon diesel <br /> tank on August 8, 1988 and one 1,000-gallon gasoline tank on June 23, 1994. Soil <br /> samples and groundwater, samples showed presence of Total Petroleum Hydrocarbons <br /> (TPH) as Gasoline (TPHG), and Benzene, Toluene, Ethylbenzene and Xylenes (BTEX). <br /> A water sample from the former gasoline tank location appeared anomalous and a re-test <br /> or explanation of sampling protocol for that sample (sampled on July 28, 1994) was <br /> requested by PHS EHD. Apparently this sampling/protocol issue was never resolved to <br /> satisfaction and the PHS,, EHD, who then requested a vertical and horizontal site <br /> assessment investigation o be performed on the site. A 2000-foot radius water well <br /> survey was performed prior to the site investigation to locate wells registered with the <br /> State and City of Tracy. This information was sent to PHS EHD in Wright's letter dated <br /> February 24, 2000. j <br /> 67 E. 10th Street . Tracy,CA 95376 <br /> 4 209.833.0758 ♦ Fax 209.832.5152 <br /> wright@inreach.com Lic. #651501 A-B HazMat � <br /> websit http://home.inreach.com/wright Page 1 �� <br /> Ili <br />