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Advanced <br /> i Inc . <br /> GeoEnvironmental, <br /> 04 December 1998 ENVIRONMENTAL HEALTH DIVISION <br /> 304 E. Weber Ave. Third Floor <br /> AGE-NC Project No. 98-0481 P p. Box 388, Stoc <br /> Approved „_inn CA 95201-0388 <br /> Denied LQ <br /> Ms. Carol Oz Conditions / <br /> SAN JOAQUIN COUNTY PHS-EHD <br /> 304 East Weber Avenue, 31 Floor <br /> Stockton, CA 95201 <br /> Subject: Summary of Preliminary�ite Assessment Activities <br /> EMIL'S LIQUORS <br /> 1405 California Street, Escalon, California <br /> Dear Ms. Oz: <br /> This letter presents a summary of preliminary site assessment (PSA) activities conducted at the <br /> Emil's Liquors site located at 1405 California Street, Escalon, California. Also, this letter presents <br /> . recommendations for additional PSA activities. The PSA was conducted in accordance with the <br /> Advanced GeoEnvironmental, Inc.'s (AGE's) 25 August 1998 Work Plan - Preliminary Site <br /> Assessment, as approved by the San Joaquin County Public Health Services-Environmental Health <br /> Division(PHS-EHD) on 27 August 1998. The purpose of the PSA was to evaluate the vertical and <br /> lateral extent of petroleum hydrocarbon impacts in the vicinity of the former fuel dispenser island <br /> and former waste oil underground storage tank (UST) at the site (Figure 1). <br /> Preliminary Site Assessment Activities <br /> On 22 September 1998, a total of seven soil probe borings (B-la through B-1g) were attempted <br /> using Geoprobe techniques in the approximate area of the former fuel dispenser island and former <br /> waste oil UST at the site (Figure 1). During the investigation activities, the Geoprobe encountered <br /> refusal in each of the soil probe borings at depths ranging from 8 to 10.5 feet below ground surface <br /> (bsg). Geoprobe refusal was apparently due to encountering hardpan,which prevented soil sampling <br /> to the proposed depth of 30 feet bsg. <br /> Collection of discrete soil samples was made difficult by sloughing of fill material (i.e., gravel) and <br /> the presence of the hardpan. However, one soil sample (B-1-9.5') was collected from soil probe <br /> boring B-Ig and submitted for chemical analysis. Soil sample B-1-9.5' consisted primarily of native <br /> soil and contained some fill gravel. Laboratory analysis of the soil sample reported no detectable <br /> concentrations of benzene, toluene, ethylbenzene, total xylenes (BTEX), total petroleum <br /> hydrocarbons as diesel (TPH-d), total petroleum hydrocarbons as gasoline (TPH-g) and total lead. <br /> 4005 North Wilson Way, Stockton, California 95205 <br /> Telephone (209)467-1006 FAX (209) 467-1118 <br />