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ENVIRONMENTAL VIRONMEN A AL E11LTH DEPARTMENT <br /> SAN JOAQUIN COUNTY <br /> Unit Supervisors <br /> Donna K.Heran,R.E.H.S. <br /> 304 East Weber Avenue,Third Floor Carl Borgman,R.E.H.S. <br /> N II`'� :1 Director Mike Huggins,R.E.H.S.,R.D.I. <br /> `�' ' " l Al Olsen,R.E.H.S. Stockton, California 95202-2708 <br /> Douglas W.Wilson,R.E.H.S. <br /> • :, - 'P Program Manager Telephone: (209) 468-3420 Margaret Lagorio,R.E.H.S. <br /> 6 <br /> 4 - <br /> Laurie A.Cotulla,R.E.H.S. Fax: (209) 464-0138 Robert McClellon,R.E.H.S. <br /> F <br /> Program Manager Mark Barcellos,R.E.H.S. <br /> JEFFREY BROWN APR 0 4 2002 <br /> 5918 STONERIDGE MALL ROAD <br /> PLEASANTON CA 94588-3229 <br /> RE: FORMER SAFEWAY MEAT PLANT SITE CODE: 1194 <br /> 1111 NAVY DRIVE <br /> STOCKTON CA 95206 <br /> San Joaquin County Environmental Health Department (EHD) has received your letter <br /> dated March 18, 2002 requesting closure of the above-referenced site and closing of the <br /> remaining three monitoring wells. The letter also stated one of the three monitoring Wells. <br /> MIN-6, could not be located as it had been paved over by the City of Stockton. <br /> Your request for closure is under consideration at this time. You will be notified of the final , <br /> decision after EHD meets with Regional Water Quality Control Board on April 17, 2002. <br /> Please be aware that the extent of the contamination in the soil and groundwater has not <br /> been defined. Additional work to investigate the extent of the contamination plume may be <br /> required. Analytical results of previous soil and groundwater samples as reported in Site <br /> Closure Report for the Former Safeway Meat Packing Plant(the report) dated August 10, 1998, <br /> prepared by Emcon are as follows: <br /> Table 1. Anal tical results of soil sam les and grab water sam les <br /> Boring I Depth of the soil Sample TPH-d in (mg/kg) Water sample TPH-d µ /L) <br /> B-21 30.5 feet bsg 1,200 6,900 <br /> B-19 30.5 feet bsg 3,200 160,000 <br /> B-17 26 feet bsg 1,900 300 <br /> B-18 26 feet bsg <1.0 970 <br /> mg/kg = milligrams per kilogram µg/L = micrograms per liter <br /> TPH-d = Total Petroleum Hydrocarbons as diesel <br /> bsg = below surface grade <br /> Table 2. Last three analytical results of TPH-d in groundwater samples from monitoring <br /> wells <br /> April'94 µ /L) Nov`94(µ /L) Mar'95 (µ /L) <br /> MW-4 200 320 250 <br /> MW-5 670 510 740 <br /> MW-6 300 180 770 <br /> All above results in (µg/L) <br />