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McClelland engineers,inc. <br /> 2140 Eastman Avenue,Ventura,California 93003, <br /> Tel.(805)644-5535,Telex:659241 <br /> March 7, 1988 <br /> Job Number 0588-1603 <br /> Gordon Lee Boggs <br /> California Regional Water Quality Control Board <br /> Central Valley Region <br /> 3443 Routier Road <br /> Sacramento, CA 95827-3045 <br /> Re: Water Quality Sampling at Pet Foods <br /> Facility, 1405 South Fresno Avenue, <br /> Stockton, California <br /> Dear Mr. Boggs: <br /> Enclosed is a copy of the laboratory analysis report for groundwater <br /> samples collected by McClelland Engineers from the existing on-site monitor- <br /> ing wells at the above referenced facility. The wells were installed in <br /> February 1987 by Kleinfelder and Associates. Initial groundwater sampling <br /> (February 12, 1987) showed nondetectable levels of benzene, toluene, xylene <br /> and ethyl benzene (BTXE) in the three wells. Monitoring well MW-1 detected <br /> 0.3 ppm total petroleum hydrocarbon (TPH) . <br /> The wells were resampled on February 16, 1988 by McClelland Engineers. <br /> Purging and sampling of the wells was performed with a teflon bailer. <br /> Conductivity, pH and temperature were monitored during purging of the wells. <br /> Once these parameters had stabilized (after 11,3 well volumes) , samples were <br /> collected with a teflon bailer. <br /> The groundwater samples were analyzed for BTXE and TPH by EPA Methods <br /> 602 and 8015, respectively. No detectable concentrations of these compounds <br /> were found in the groundwater samples. <br /> Very truly yours, <br /> MCCLELLAND ENGINEERS, INC. <br /> Thomas D. Matteucci <br /> Hydrogeologist <br /> Thomas W. McNeilan, P.E. <br /> Engineering Manager <br /> TDM/TWM:val <br /> CC: David R. Carls (San Joaquin Local Health District) <br /> William S. Rickman (Ogden Environmental Services, Inc.) <br />