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Mr. Leonard Crisp 7L 794-104-01 FRANK'S FOOD MART Page 2 MANTECA, CALIFORNIA 4) determining the in-place density, moisture content and relative compaction of the backfill soil placed in the tank excavation area at the referenced depths and locations; and 5) preparing this report. W"I 0M VW DII-Wel The project consists of the removal of an underground storage tank and backfill of the resulting excavation at the southeast corner of the intersection of South Airport Way and Yosemite Boulevard in Manteca, California. The excavation measured about 19 feet by 24 feet in plan dimension, and, was reported by Mr. Crisp to be about 4 feet deep. PROJECT SPE!CIFICATIONS According to Mr." Crisp, backfill soil shall be compacted to at least 90 percent relative compaction. Maximum density shall be determined in accordance with AS Test Method D1557, Method A;, 1101asaMMIDED The tests were performed by Mr. Dan Davis, Twining's Engineering Technician, on November 16, 1994. Initially, the soils were sampled and visually,, classified in accordance with the Unified Soil Classification System. The soil was tested in the laboratory per ASTM Test Method D1557, Method A to determine it's maximum dry density and optimum moisture content. The depth and frequency of testing was determined by the Engineering Technician based on the depth of fill as reported by Mr. Crisp and the square footage of the excavation. The in-place density tests and moisture content were performed using the a 'nuclear moisture/density gauge in accordance with ASTM Test Methods D2922 and D3017. The locations and depths were determined by pacing and steel tape and should be considered accurate to within 5 feet and .5 feet respectively.