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Since 183 <br /> Geotechnical and Environmental Consultants Engineering and Chemical Laboratories <br /> November 13, 1990 TL #790-056-02 <br /> Invoice #70801 <br /> For: Dames & Moore <br /> 1320 E . Shaw Avenue, Suite 110 <br /> Fresno, CA 93710 <br /> Project: Tank Excavation and Backfill <br /> Chevron Service Station <br /> Hwy 99 and Morada Lane <br /> Stockton, California <br /> PO. No . 16000-250--44 <br /> Account No. 114-071 <br /> Subject: Spot Soil Density Tests conducted on the <br /> tank excavation backfill soils . <br /> Dear Mr. Irwin: <br /> This report presents the individual compaction test results of the <br /> in-place density tests conducted on the backfill soils placed in <br />. the tank removal excavation at the above referenced location. <br /> The scope of our testing was authorized by Mr. Mike Irwin with <br /> Dames & Moore on October 18 , 1990 . <br /> The tests were performed by Val Baroni, Doug Davidson, <br /> Harold Holland, and Dennis Thompson of our Modesto office on <br /> October 19, 22 , 23 , 24, 25 , 26 , and 27 , 1990 <br /> Project Description: This project consists of the previous <br /> removal of underground storage tanks <br /> and backfill of the resulting <br /> excavation. According to Mr. Irwin, <br /> the excavation measured approximately <br /> 60 by 60 feet in plan dimension and was <br /> about 15 feet deep . <br /> Project Specifications : According to Mr . Richard Johnson the <br /> following specifications shall apply: <br /> Uniform Building Code Standard No <br /> 70-1 . All fill soils shall be <br /> compacted to a minimum of 90 percent of <br /> maximum density as determined by the <br /> UBC 70-1 . <br /> 2527 Fresno Street • PO Bax 1472 = 9401 west Goshen Avenue <br /> Fresno California 93716 • (209) 268 7021 Visalia California 93291 • (2091 Sit 21,0 <br /> * 1405 Granite Lane suite 1 2 3701 Pegasus Drive Suite 124 <br /> Modesto California 95351 • (209) 523 0994 Bakersfield California 93208 (8051:33 :28 <br />