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Respectfully submitted, <br />Ervin <br />cc: Connell otors <br />FOOTHILL <br />ENGINEERING <br />12793 PADDY CREEK LANE LODI, CA 95240 <br />PH. (209) 368-9381 FAX (209) 367-1163 <br />January 4, 1999 <br />Mr. Michael Infurna <br />San Joaquin County Public Health Services <br />Environmental Health Division <br />P. 0. Box 388 <br />Stockton, CA 95201 <br />Subject: Connell Motors 2211 N. Wilson Way, Stockton CA. <br />Dear Mr. Infiffna: <br />Please find attached a copy of the soil sample analysis for the three samples that were taken during <br />the over excavation of the pump island area of Connell Motors made under your supervision on <br />12/10/98. Also, attached is a copy of the sample locations shown on the excavation site map. <br />Nancy Biedenweg, Laboratory Director for Sherwood Labs, reported by phone to this author that <br />it is her conclusion that the TPH-Gasoline & BTEX results for BS #1 (bottom sample eastside of <br />excavation) indicate a very old spill. During excavation it became obvious that the old gasoline <br />contamination found in BS #1 will most likely be found under the pump island and to the East of <br />the excavation area. <br />Samples BS #2 and SW #1 (bottom and side samples westside of excavation) showed a soil <br />L:isLoloration normally found in older spills. It is possible that both the spills detected from these <br />,am pies are from original fueling operations conducted on the site before the latest set of tanks were <br />installed (tanks removed on 6/11/98, by Thorpe Oil). <br />RECOMMENDATIONS <br />The fuel contamination on this site may have penetrated deeper into the soils under the fuel islands <br />than originally suspected from the tank pull samples. It is the recommendation of the author that <br />a work plan be developed to determine the horizontal and vertical extent of the contamination. This <br />work plan should include ground water sampling under the fuel islands. <br />Please review the findings of the soil samples analysis attached and reply to the recommendations <br />made above. <br />1