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Advanced <br /> GeoEnv 'lronmenta.l Inc . = :: <br /> 07 April 1999 <br /> AGE-NC Project No. 98-0481 <br /> t <br /> Ms. Carol Oz <br /> SAN JOAQUIN COUNTY PHS-EHD <br /> 304 East Weber Avenue, 3" Floor <br /> Stockton, CA 95201 <br /> ENVIRONMENTAL HEALTH DIVISION <br /> Subject: Stockpile Soil Sample Results 304 E. Weber Ave. Third Floor <br /> R O. Box 388, Stockto A 95201-0388 <br /> EMIL'S LIQUORS Approved <br /> 1405 California Street, Escalon, CaliforniaDenied ❑ <br /> Conditions <br /> Dear Ms. Oz: Date by <br /> This letter presents the results of laboratory analysis for soil samples collected from a stockpile of <br /> soil generated at the above-referenced site. Soil samples were collected from the soil stockpile on <br /> 28 January 1999. Soil samples were collected from the stockpile to confirm previously reported <br /> petroleum hydrocarbon-impact and to identify proper disposal options for the excavated material. <br /> Background <br /> Stockpiled material consists of soil excavated from the site during underground storage tank (UST) <br /> and fuel island removal activities conducted in July 1997. During the UST removal activities, <br /> excavated soil was stockpiled on an adjacent parcel located approximately 100 feet east of the site. <br /> Approximately 100 to 150 cubic yards of soil was excavated and staged in 13 small stockpiles. <br /> During the UST removal activities, a total of five composite soil samples (SP 1 through SP5) were <br /> collected from the stockpiles for laboratory analysis. Results of stockpile soil sample analysis were <br /> presented in Grayland Environmental's Underground Storage Tank Removal Report, dated <br /> 01 August 1997. Soil analytical results for the stockpile samples collected during the July 1997 <br /> activities are presented in the attached Table I and Table 2. As shown on Tables 1, concentrations <br /> of total petroleum hydrocarbons as gasoline (TPH-g), benzene, toluene, ethylbenzene, total xylenes <br /> (BTEX), and methyl tertiary-butyl ether (MTBE) were detected in sample SP4 . TPH-g, BTEX, <br /> MTBE, oil and grease, volatile organics, and metals were detected in sample SPS (Table 2). Also, <br /> a relatively low concentration of TPH-diesel (TPH-d) was detected in sample SP3. Stockpile SP4 <br /> was generated during the removal and sampling of the fuel island and reportedly only amounted to <br /> approximately five to six cubic yards, while soil stockpile SP5, generated during removal of an <br /> approximately 85-gallon waste oil drum, amounted to six to eight cubic yards. Stockpiles SP4 and <br /> SP5 reportedly comprised a small volume {apt)roximate]v 14 cubic vards) of the total 100 to 150 <br /> 4005 North Wilson Way, Stockton, California 95205 <br /> Telephone (209) 467-1006 FAX (209) 467-1118 <br />