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1 <br /> Advanced <br /> GeoEnvironmental, Inc. - <br /> 25 Mav 2001 <br /> AGE-NC Project No. 95-0115 <br /> Ms. Margaret Lagorio <br /> San Joaquin County Public Health - Environmental Health Division <br /> 304 East Weber Avenue, Third floor <br /> Stockton, California 95202. <br /> Subject: Receptor Well Survey <br /> ELKHORN COUNTRY CLUB <br /> 1050 Elkhorn Drive, Stockton, California <br /> Dear Ms. Lagorio: <br /> At your direction,Advanced GeoEnvironmental, Inc. (AGE)has prepared a receptor well survey for <br /> the Elkhorn Country Club site, located at 1050 Elkhorn Drive in Stockton. A soil vapor <br /> extraction/air-sparging system had been operated at the site to remediate hydrocarbon-impacted <br /> ground water. Dissolved hydrocarbon concentrations in ground water have been less than detectable <br /> concentration for several quarterly sampling events. Confirmation soil samples collected-from the <br /> former UST area demonstrated a significant decrease of hydrocarbon concentration in soil. <br /> As required by California Regional Water Quality Control - Central Valley Region guidelines for <br /> site closure and your office a receptor well survey of wells within a 2,000-foot radius of the <br /> hydrocarbon-release site has been conducted to identify well location, construction and use. The <br /> scope of the work included an area reconnaissance to identify visible potential receptors (address and <br /> location), a review of files and records available from the San Joaquin County Public Health Service <br /> - Environmental Health Division (PHS-EHD), Department of Water Resources (DWR) and San <br /> Joaquin County Public Works Department (SJCOPWD). <br /> RESULTS <br /> Based on the visual observations and data collected from the listed regulatory agencies the following <br /> wells were located in the search area. <br /> • One irrigation well services the site. This well is located approximately 1,000 feet cast of the <br /> former UST location. The construction details for the.well are not readily documented and <br /> are not know. <br /> i Two domestic or utility wells were located in the search area. San Joaquin Country maintaitls <br /> two domestic water wells within the search area, designated Well 91 and Well 92. Well #1 <br /> is located 1,250 feet northwest of the former UST and Well #2 is located 1,000 feet north to <br /> northwest of the forinel3l-74a*13aad,Stockton, California 95215 <br /> Telephone (209) 467-1006 FAX(209) 467-1118 <br />