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Dees Aj ssoclates, Inc. _M101 <br />Geotechnical Engineers <br />501 Mission Street, Suite 8A Santa Cruz, CA 95060 Phone (831) 427.1770 Fax (831) 427.1794 <br />November 20, 2013 Project No. SJ -0735 <br />ADVANCED GEOENVIRONMENTAL, INC. <br />837 Shaw Road <br />Stockton, California 95215 <br />Attention: Robert Marty <br />Subject: Progress Report No. 1 <br />Earthwork Observation and Testing Services <br />Reference: Removal of Underground Gasoline Tanks <br />47 East 11th Street, Tracy <br />APN 233-369-14 <br />Tracy, California <br />Dear Mr. Marty: <br />This letter summarizes the results of our earthwork observation and testing services performed <br />between October 11, 2013 and 14, 2013 at the referenced site. Earthwork performed during this <br />report period consisted of backfilling the voids left after removal of three 500 gallon gasoline <br />tanks. <br />An excavation 10 feet deep and 20 feet square was excavated in the southeast corner of the <br />site. Three 500 gallon gasoline tanks were removed from the base of the excavation. The <br />excavation was backfilled with imported sand and then imported recycled baserock. The fill was <br />moisture conditioned, placed in thin lifts and compacted with a sheepsfoot wheel attached to a <br />backhoe. <br />In-place density tests were randomly taken as the fill was placed. Our test results indicate the fill <br />placed in the excavation was compacted to at least 90 percent relative compaction. The fill <br />placed in the top 2 feet of the excavation was compacted to at least 95 percent relative <br />compaction. <br />Very truly yours, <br />DEES & ASSOCIATES, INC. <br />^ oQ,;koFESSlpy9 <br />Rebecca L. Dees L <br />Geotechnical Engineer w <br />G.E. 2623 " No. 2623 <br />it EXP /3 <br />Attachments * Is, <br />0ForEc"N�GP` \P <br />Copies: 2 to Addressee <br />TQrt of <br />1 <br />Dees & Associates, Inc. <br />SJ -0735 ( 11/20113 <br />