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ROGER EOOTT ASSOCIATES, INC. <br /> 1450 Harbor Blvd., Suite G <br /> Vilest Sacramento, CA 95691 <br /> (916)325-2580 <br /> `i FAX (916) 325-2570 <br /> 3anuary 9, 1991 <br /> job No. 125-001 <br /> t' <br /> i <br /> Chapin Brothers, Inc. <br /> 1203 North Carlton Aven::e <br /> Stockton California 95203 <br /> Attention' Mr, Russell Chapin <br /> Subject: Executive summary <br /> Subsurface Environmental Investigation <br /> 1766 Monte Diablo Avenue <br /> Stockton_, California <br /> Mr. Chapin: <br /> conducted a subsurface <br /> Roger Foott Associates, Inc. , roundwater <br /> environmental investigation to evaluate soil and g <br /> conditions at the Chapin Brothers service station and auto <br /> repair facility located at 1766 Monte Diablo Avenue in <br /> 1 f <br /> Stockton, California. This investigation was requested in <br /> association with a proposed real estate transaction. This <br /> report summarizes the methods used in orrc conclusionsandon <br /> � presents the results of analyses an our one soil <br /> recommendations. The investigation 35nf� �deandrillin installation of <br /> l : boring to a depth of approximately <br /> one monitoring well for collecting soil and groundwater <br /> samples. <br /> roundwater sample were <br /> Three soil samples and one g The samples were <br /> E ' submitted to the laboratory for analysis. and <br /> se tested for total petroleum hydrocarbons as gasoline (TPHg} , <br /> f ; <br /> fzene, and total xylene isomers <br /> or benzene, toluene, ethylben <br /> (BTEX) . These substances were det-ected in the soil samples at <br /> groundwater at high <br /> --- and in the g n - - - <br /> loW....t.o_.moderate concentrat_ons, _ __... _.__ . <br /> 3 t[t TPHg, 31 ppm benzene, ll....ppm...toluene,-- <br /> PPM <br /> .olue e <br /> concentrations (200 PP <br /> and 5.2 ppm total xylene isomers) . <br /> 1.9 rpm ethylbenzene, <br /> 4 <br /> f.! <br /> .s <br /> z. <br /> 1 i <br /> Kv� kr s }t <br /> 1 00- <br /> ���rm <br />