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6 0 <br />,.*44NEIL O. ANDERSON <br />A N D A S S O C I A T E S <br />August 31, 2006 <br />NOA Project Number: E06041A <br />Robert McClellon <br />San Joaquin Environmental Health Department <br />Stockton, CA <br />Subject: Methane Harzard Mitigation <br />3442 French Camp Turnpike <br />Stockton, California 95206 <br />Dear Mr. McClellon, <br />GEOTECHNICAL <br />ENVIRONMENTAL <br />INSPECTIONS & TESTING <br />LABORATORY SERVICES <br />POOL ENGINEERING <br />POST TENSION DESIGN <br />Our office inspected the layout of the vent pipe and the size and thickness of the gravel on August <br />31, 2006. After reviewing the plans and the site conditions a minor change was made to the details <br />on the plans to conform with the General Requirements on Page 1 of the Plans. The plans call for a <br />geo-fabric between the gravel layer and two inches of sand below the impervious membrane. The <br />original detail did not indicate this. A new detail is provided on the attached page. <br />Sincerely, <br />NEIL O. ANDERSON & ASSOCIATES, INC. <br />aures D. Robinson, Project Manager <br />RCE -69045, PG -7834 <br />AH0. <br />' Exp. 6 'g <br />` vF CA0f�4 <br />LODI ■ SACRAMENTO ■ RENO ■ MODESTO <br />ENVIRONMENTAL DIVISION 902 Industrial Way, Lodi, California 95240 ■ 209.367.3701 ■ 209.369.4228 ■ www.noanderson.com <br />