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SANTOCHI & BRAVANTE LLC. <br /> ENVIRONMENTAL CONSULTANTS <br /> jt I <br /> TELEPHONE (7 14)644-2690 ! t "":11 + t.�l� � <br /> �.+ is1� ZO CORPORATE PLAZA <br /> FACSIMILE (7 14)644-2691 NEWPORT BEACH,CA 92660 <br /> 97 33 <br /> January 20, 1997 <br /> Mr. Mike Infurna <br /> San Joaquin County Environmental Health <br /> 304 East Weber Avenue 3rd Floor <br /> Stockton, California 95201-0388 <br /> Dear Mike: <br /> Enclosed is a copy of the Phase II investigation performed at 222 North El Dorado Street in Stockton, <br /> California in December 1996. The investigation gathered groundwater analytical data from groundwater <br /> monitoring wells on the subject property and soil data from the basement area of the building. The report also <br /> included groundwater and soils data collected by CRC Environmental Risk Management, Clayton <br /> Environmental Consultants,and Santochi&Bravante LLC over several years. The results of the investigation <br /> indicate the following: <br /> • Petroleum constituents, including weathered gasoline,are present in the soils of the.subject property <br /> located in the basement area. <br /> • Gasoline constituents currently present in the monitoring wells are likely the result of offsite sources. <br /> • Long term groundwater gradient information collected at the subject property shows a consistent east, <br /> northeast gradient direction. <br /> This report recommends characterization of the petroleum impact in the basement area, and the installation <br /> of an additional groundwater monitoring well located down gradient from the impacted area. A work plan for <br /> this phase of work will be forwarded to you prior to initiation. <br /> I <br /> Should you'"have any questions, feel free to call me at_(714) 644-2690. <br /> Sincerely, <br /> SANTOCHI & BRAVA I <br /> 11iEV0R D.SUMN CHI <br /> No.M1 <br /> Trevor D. Santo i MTRED <br /> CEG 1591 RNNERRING <br /> Brian Walker, ASB <br /> Sandy Hull,ASB <br /> Wendy Cohen, CVRWQCB <br /> i <br /> I <br /> CC: Enclosures <br /> i <br /> i <br /> i <br />