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F1 <br /> kH KLEINEELDER <br /> File No. 20-2983-03 <br /> F October 26, 1990 <br /> FW.D.O. , Inc. <br /> 7599 Linne Road <br /> FTracy, California 95376 <br /> Attention: Dave Olmstead <br />.F Subject: ADDENDUM TO SEPTIC SYSTEM SUITABILITY STUDIES <br /> PROPOSED SUBDIVISIONS <br /> LOCATED NEAR VALPICO ROAD AND MACARTHUR DRIVE <br /> SAN JOAQUIN COUNTY, CALIFORNIA <br /> Gentlemen: <br /> FPresented in this report are the results of additional studies <br /> regarding nitrate loading for subdivisions located southeast of <br /> F Tracy in a section bounded by Val.pico Road on the north, Chrisman <br /> Road on the east, Linne Road on the south, and MacArthur Drive on <br /> Fthe: west. As you are aware, our firm has prepared several septic <br /> system suitability studies within the limits of the study area in <br /> accordance with Ordinance No. 3323 , Division 10, Chapter 2, Section <br /> F 9-10100, Item C. San Joaquin County Environmental Health has <br /> expressed concern regarding the additional nitrate loading to the <br /> Pupper aquifer beneath the study area. The maximum allowable <br /> nitrate concentration in drinking water, according to State <br /> Fstandards, is 45 mg/l. With wells in the area generally indicating <br /> a nitrate concentration of between 30 to 35 mg/l, the groundwater <br />' beneath the site has a limited capacity for additional nitrate <br /> ' loading from septic systems. <br /> FIn our evaluation we have reviewed the following soils and septic <br /> system suitability reports: <br /># ' <br /> F <br /> Copyright 1990 Kleinfelder, Inc. <br /> KLEINFELDER 2825 East Myrtle Street, Stockton, CA 95205 (209) 948-1345 <br />