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`r► swo <br /> D MOVED <br /> KLEINFELDER AUG 022002 <br /> An employee nwned.mPany <br /> EN PERMnIT% SERVICES <br /> ENT HEALTH <br /> File No. 13257.G01 <br /> June 4, 2002 <br /> Mr. Ray Takata <br /> Takata Sugioka Kimura <br /> 7311 Greenhaven Drive, Suite 190 <br /> Sacramento, CA 95831 <br /> Subject: NITRATE LOADING STUDY <br /> GRANITE STOCKTON OFFICE <br /> FRENCH CAMP, CALIFORNIA <br /> Dear Mr. Takata: <br /> Kleinfelder is pleased to present the results of our nitrate loading study for a proposed office <br /> addition to be located in French Camp, California. The purpose of our study was to determine <br /> the potential increase in nitrate loading in groundwater from the existing septic system due to <br /> waste from the proposed building addition. The study was performed in general accordance to <br /> the requirements of Section 9-10100© of San Joaquin County Ordinance. The following <br /> includes background information regarding the proposed development, present use of the site, <br /> and the groundwater depth in the project area. In addition, discussions regarding our <br /> investigative procedures and the site conditions encountered during our field exploration are <br /> presented. Finally, the results of our nitrate loading calculations and project limitations are <br /> provided. <br /> PROPOSED DEVELOPMENT <br /> On a preliminary basis, we understand that an addition is planned for the existing office building <br /> at the subject 27.12-acre project site. We understand there will be a total of about 50 employees <br /> and up to 20 additional people on site occasionally for seminars. There will be kitchen/break <br /> room facilities on site. <br /> We understand that waste from the proposed addition will be deposited into an existing on-site <br /> sewage disposal system consisting of a septic tank and leach trench. <br /> GROUNDWATER DEPTH <br /> During the time of our investigation, groundwater was encountered at a depth of approximately <br /> 20.5 feet. Lines of Equal Depth to Groundwater contour maps published in groundwater reports <br /> by the San Joaquin County Flood Control and Water Conservation District show groundwater <br /> levels in the project area ranging from about 15 to 30 feet below ground surface from Spring <br /> 1981 to Spring 1999. <br /> 13257.G01/ST02R023 June 4,2002 <br /> O 2002 Kleinfelder,Inc. Pagel of 3 <br /> KLEINFELDER 2825 East Myrtle Street,Stockton,CA 95205-4794 (209)948-1345 (209)948-0621 fax <br />