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A � -. r JAN 2 9 X987 ENViROMENTAL HEALTH US /rpp QQID SrB/l�S 43255 Mission Blvd Sun_8 frernpnt CA 9 g (415)651-1906 January 23, 1987 0116mram AGS Job 08696-2 Mick Ramos RAMCON Acting Agent for Crystal Cream and Butter Co. 1450 Harbor Blvd. , Suite B West Sacramento, CA 95691 Subject: Evaluation of contaminated soil at Crystal Cream and Butter Company, 404 W Fremont St. , Stockton, California, field data and laboratory reports. SDear Mr. Ramos: Enclosed you will find the laboratory results from soil samples collected during excavation at the above-referenced site on January 14, 1987 (Table 1) . Excavation was required in the area because sampling after tank removal operations showed that hydrocarbon contamination was present in the area at levels above 1,000 parts per million (ppm) . The results indicate that soil contaminated at levels above 1,000 ppm has been removed, and the remaining soil in the tank cavity area contains low to moderate levels of hydrocarbon contamination. The excavation re".:hed a maximum depth of approximately 22 feet, or 6 feet below the ground water surface. An organic vapor analyzer was used to give a field estimation of contaminant levels in the soil removed. The excavated soil was placed under plastic covers in an ad3acent vacant lot in piepazation for future treatment by aeration. Samples were collected at four separate locations in the walls of the tank cavity. Locations are depicted on the attached Generalized Site Plan. S-16-1 was collected from the south wall, at an approximate depth of 16 feet below the around surface. Sample S-2 was collected from the north wall, at a depth of approximately 16 feet. S-18-3 came from the east wall, approximately 18 feet 'selow the ground surface, and S-18-5 was collected at a depth o.: 18 feet in the western part of the tank cavity.