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' Project Quarterly Update Report May 1, 1991 9110 Thornton Road, Stockton, Califomia Page 10 ' TABLE 2 DOMESTIC WELL OWNERS WELL ID ADDRESS OWNER ' TMG 9036 Thomton Road Tomato Growers Assoc 1927 1927 Waudman Road Chan 1912 1912 Waudman Avenue Woods 8968 8968 Thomton Road Jehovah Witnesses/ Kingdom Hall 9140 9140 Connie Avenue Shlmado ' 9156 9156 Connie Avenue Snyder 9172 9172 Thornton Road Ivy Motel/Lang IWater samples were collected from selected domestic wells twice during this reporting period on February 21, 1991, and March 28, 1991 The domestic wells which were sampled are listed in Table 2 No samples were collected from domestic well number 9160 during this quarter, as directed by Southland lie All samples were collected in laboratory-supplied containers, labeled, preserved, and stored on ice Samples were transported under Chain-of-Custody Manifest to a State of Calrfomia-certified laboratory, GTEL Environmental Laboratories, Inc (GTEL) in Concord, California Each sample was analyzed for benzene, toluene, ethylbenzene, and xylenes (BTEC, and for total petroleum hydrocarbons (TPH)-as- gasoline using modified EPA Methods 5030/8020/8015 The sampling schedule during this period for the wells on and near the site was as follows + Allo rational monitoring wells sampled once during the uarter, on February 21, 1991 pe g P 9 q �7+ In addition to the dry monitoring wells, MW-1, MW-7 and MW-9 did not contain enough water for sample collection • Domestic wells TMG, 1912, 1927, 8968, 9140, 9156, and 9172 were sampled twice during this reporting period, on February 21 and March 28, 1991 IThe results of the groundwater sampling and analyses are discussed below A summary of the laboratory analytical results from groundwater samples is provided in Appendix C The laboratory analytical reports are provided in Appendix D 6 GROODWATER ICHNOLOGY INC