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u %%1/ <br /> KLEIN FELDER <br /> An omplovee oNmcrd company <br /> File No. 13384.601 <br /> March 19,2002 (Revised March 25, 2002) <br /> Mr. Ian Wiebenga <br /> Calaveras Materials, Inc. <br /> 1945 Lathrop Road <br /> Lathrop, California 95330 <br /> Subject: NITRATE LOADING STUDY <br /> 28983 SOUTH MaeARTHUR DRIVE <br /> TRACY, CALIFORNIA <br /> Dear Mr. Wiebenga: <br /> Kleinfelder is pleased to present the results of our nitrate loading study for 28983 South <br /> MacArthur Drive in Tracy, California. The purpose of our study was to assist in determining the <br /> suitability of the property for septic tank usage. The study was performed in general accordance <br /> with 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 historical groundwater depths in the project area. Finally, the results of our nitrate <br /> loading calculations and project limitations are provided. Results of our percolation testing are <br /> presented in our letter dated March 22, 2002. <br /> PROPOSED DEVELOPMENT <br /> On a preliminary basis, we understand the subject 5.2-acre project site will be developed for a <br /> new concrete batch plant. According to the letter report by Technicon dated February 7, 2002 <br /> regarding the percolation testing, the site slopes gently from south to north with the southern <br /> portion of the site containing gravel piles and heavy equipment. This area was also apparently <br /> being used for parking. The remainder of the site was fallow land with an irregular surface. <br /> According to Mr. Wiebenga, the batch plant is anticipated to have approximately 20 employees. <br /> We anticipate that waste disposal will be provided by an on-site septic tank/leach trench sewage <br /> disposal system. <br /> HISTORICAL GROUNDWATER DEPTH <br /> Based on our work in the vicinity, high groundwater in the project area is expected to be deeper <br /> than 100 feet below ground surface. <br /> 13384.G01/2002R270 March 19,2002 <br /> ©2002 Kleinfelder,Inc. Page 1 of 3 <br /> KLEINFELDER 2825 East Myrtle Street,Stockton,CA 95205-4794 (209)948-1345 (209)948-0621 fax <br /> 1 <br />