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�+ Civic Center Square <br /> 2444 Main Street, Suite 215 <br /> Fresno, California 93721-2734 GEOMATRIX <br /> (559) 2642535 + FAX(559] 264-7431 <br /> July 17, 2000 <br /> L10 Project 006508 D <br /> I JUL 1 8 7n00 <br /> V Ms. Donna Heran, REHS,Director <br /> Environmental Health Division ENVIRONMENT pERMIT/SEERVECES HEALTH <br /> San Joaquin County Public Health Services <br /> 304 East Weber Avenue, Third Floor <br /> Stockton, California 95202 <br /> Subject: Work Plan for Shallow Groundwater Sampling <br /> Former Underground Storage Tank Area <br /> Former Dole Fresh Fruit—Victor Fruit Operations <br /> 8751 East Highway 12,Victor, California <br /> Dear Ms. Heran: <br /> Le <br /> As requested by Dole Food Company, Inc. (Dole), Geomatrix Consultants, Inc. (Geomatrix), <br /> has prepared this work plan for collecting a shallow groundwater sample near the former <br /> underground storage tank(UST) area at the former Dole Fresh Fruit—Victor Fruit Operations <br /> facility (the site) (Figure 1). <br /> Lo A 550-gallon UST containing gasoline (Figure 2)was removed from the site in 1991. Site <br /> closure was requested for the former UST area(Chaney, Walton&McCall [LLC], <br /> October 15, 1999, "Support for Site Closure") from the San Joaquin County Public Health <br /> Services, Environmental Health Division(PHS/EHD). In response, the PHS/EHD requested <br /> that soil and/or groundwater samples be collected from the former UST area for analysis of <br /> methyl tertiary butyl ether(MtBE). <br /> In March 2000, soil samples collected at about 15 and 20 feet below ground surface (bgs) <br /> from two borings in this area(Figure 2)were analyzed for gasoline oxygenates using EPA <br /> La Method 8260 and for benzene, toluene, ethylbenzene, and xylenes (collectively referred to as <br /> BTEX) using EPA Method 8020. No BTEX compounds were detected in these samples. <br /> MtBE was detected at concentrations ranging from 0.02 to 0.08 milligrams per kilogram <br /> (mg/kg) in three of the four samples (these results will be submitted under separate cover by <br /> Chaney, Walton&McCall [LLC] to the PHS/EHD). Based on these results, Geomatrix has <br /> prepared this work plan for collecting a shallow groundwater sample in the former UST area <br /> �" for MtBE analysis. <br /> PROJECT APPROACH <br /> A shallow groundwater sample will be collected for laboratory analysis from one location in <br /> the immediate vicinity of the former UST area(Figure 2). Available data indicate that the <br /> i� predominant horizontal groundwater flow direction beneath the site is to the northwest. <br /> Depths to water measured in three on-site groundwater monitoring wells located <br /> Geomatrix Consultants, Inc. <br /> V Engineers, Geologists, and Environmental Scientists <br /> %\fr21deptdata\PROJECD6508.0001document16508-01.doe <br /> i.r <br />