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KLEINFELDER <br /> CONCLUSIONS <br /> Based on the above evaluation, we conclude that at the groundwater level, the nitrate <br /> +� concentration of the wastewater produced by the maximum possible number of leach fields <br /> allowed should not exceed the state standards. <br /> ,1 The results of our percolation tests performed on Lots 1, 2, 3, 5, 7, 11, 14, and 15 indicate that a <br /> suitable soil percolation stratum exists at a depth of about 3.5 feet below the existing site grade. <br /> A suitable soil condition is defined as a strata capable of percolating water at a rate of 60 minutes 4 $> <br /> per inch (min/inch) at a depth of 3.5 feet or 30 min/inch for deeper tests. A conventional septic <br /> tank/leach trench sewage disposal system designed per SJCEI=ID criteria should adequately serve <br /> the proposed residence on these lots provided the site grade on these lots does not change. <br /> Our percolation tests performed on the remaining lots indicate that a suitable soil percolation <br /> stratum does not exist at a depth of 3.5 feet below the existing site grade. A suitable soil stratum <br /> was encountered in these lots at depths ranging from about 6 to 19 feet below the existing site <br /> grade. A conventional septic tank/leach trench disposal system with seepage pits designed per <br /> SJCEIID criteria should adequately serve the proposed residence on these lots. The depth of the <br /> seepage pits will depend upon final site grade on these lots. <br /> LIMITATIONS <br /> The conclusions of this report are based on the information provided regarding the existing and <br /> proposed development and on the site conditions. It was assumed that the percolation test result <br /> is representative of the subsurface conditions in the general area. <br /> (D 2� This completes the scope of work requested. Our work was performed in general accordance <br /> with the standard of care that exists in San Joaquin County. No other guarantee or warranty, <br /> expressed or implied is made. <br /> Respectfully submitted, <br /> KLEINFELDER, INC. Reviewed by: <br /> �Zk PROFESS/0 <br /> �FQ K CRAi0�9! <br /> s. <br /> L No. 2196 z 1 <br /> 331-04 <br /> Anthony P. Mazzei Patrick C. Dell, G.E. cF�rs! <br /> Senior Engineer Senior Engineer 9rF FCHwrO ,\P <br /> �F CALIfO� <br /> API <br /> Attachment <br /> 23197.G01/ST03R289 February 14,2003 <br /> ©2003 Kleinfelder,Inc. Page 5 of 5 <br />