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GrOU06 AMW MOMO"PApat <br /> 470 N Mala Street,Mantem CWftn a <br /> GROUNDWATER SAMPLING AND ANALYSES <br /> Groundwater samples were collected from all four wells on April 7, 1993 The samples <br /> were collected according to the Aegis SOP included in Attachment 1, and submitted <br /> under chain-of-custody to WEST of Davis, California, a state-certified analytical laboratory <br /> All samples were analyzed for concentrations of <br /> • Total petroleum hydrocarbons (TPH), as gasoline, by Modified EPA Method <br /> 8015 <br /> • Benzene, toluene, ethylbenzene, and total xylenes (BTEX) by EPA Method <br /> 602 <br /> Analytical results from May 1992 to date, are summarized in Table 2. Previous analytical <br /> results are included in Attachment 4. The analytical laboratory report and chain-of- <br /> custody forms for the current sampling event are included as Attachment 2. TPH, as <br /> gasoline and TEX concentrations remain below the method detection limit in all wells. <br /> Aegis recommends a copy of this quarterly monitoring report be forwarded to the <br />.} following parties: <br /> Mr. Harlan Knoll <br /> San Joaquin County Local Health District <br /> Environmental Health Division <br /> Post Office Box 2009 <br /> Stockton, California 95201 <br /> Mr Gordon Boggs <br /> Central Valley Regional Water Quality Control Board <br /> 3443 Routier Road, Suite A <br /> Sacramento, California 95827-3098 <br /> 93.703A.FlPT -2- <br />