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1 <br /> Mr Chuck Carmel Project 0805-11101 <br /> September 9, 1994 <br /> Page 2 <br />' using Environmental Protection Agency Methods Modified 8015 and 5030/8020 The <br /> samples were analyzed at GTEL Environmental Laboratories, Inc , in Concord, California <br /> The results of analyses are summarized in Table I Copies of the laboratory analysis <br />' reports are presented in Appendix A Results of analyses indicated TPHG and BTEX <br /> L onc,entrations were below laboratory detection limits in groundwater samples collected <br /> from wells MW-1 through MW-4 <br />' WORK IN PROGRESS <br />' ARCO will continue to perform quarterly groundwater monitoring The next sampling <br /> event is tentatively scheduled for the month of September <br />' CONCLUSIONS <br />' The groundwater flow direction is to the north-northwest Gasoline hydrocarbons were not <br /> detected in groundwater samples collected from monitoring wells MW-1 through MW-4 <br /> Gasoline hydrocarbons have not been detected in the monitoring wells since the <br /> monitoring program began, with the exception of MW-3, which contained total xylenes <br /> at a Lonc,entration of 0 7 parts per billion during fourth quarter 1994 <br />' DOCUMENT DISTRIBUTION <br /> We recommend Signed copies of this report be forwarded to <br />' Ms Mary Meays <br /> San Joaquin Public, Health Services <br />' Environmental Health Division <br /> P O Box 2009 <br /> Stockton, California 95201 <br />' Ms Elizabeth Thayer <br /> California Regional Water <br />' Quality Control Board <br /> Central Valley Region <br /> 3443 Routier Road <br />' Sacramento, California 95827 <br /> I <br /> tiAC/p](N)80"9051110 Ihm 94 main 5 <br /> I <br />