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• �/ KLEINFELDER <br /> on this distance and the relatively low nitrate-nitrogen levels calculated, we anticipate that the <br /> impact to water bodies will be minimal <br /> The results of our percolation tests for Lots 1, 8, and 26 indicate that the near surface soils (at a <br /> depth of about 3 to 3%x feet) exhibit suitable percolation characteristics. A suitable soil condition <br /> for a test at this depth is defrted as a stratum capable of percolating water at a rate of 60 min/inch <br /> or faster. A conventional septic tank/leach trench sewage disposal system designed per SJCEHD <br /> criteria should adequately serve the proposed residences. <br /> The results of the remaining percolations tests (Lots 9, 16, 17, 18, 24, 25, and 28) indicate that a <br /> suitable soil percolation stratum exists at depths ranging from about 8 to 17 feet below the <br /> existing ground surface at the locations tested. A suitable soil condition for tests deeper than <br /> about 3%: feet is defined as a stratum capable of percolating water at a rate of 30 min/inch or <br /> faster. A conventional septic tank/leach trench sewage disposal system with seepage pits <br /> designed per SJCEHD criteria should adequately serve the proposed residence. The seepage pits <br /> should extend into the more sandy soils that were encountered at depths ranging from about 8 to <br /> 17 feet below the existing site grade. <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 results <br /> are representative of the subsurface conditions in the general area. <br /> 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 /> ESS/0� <br /> KLEINFELDER INC. r i%Q�P� 1' olsFy R <br /> tj a+ <br /> No. 64998 m <br /> ?(';* Exp.6-07 <br /> Ryan J. Olsen, C.E. vr}. CNI\. <br /> Staff Engineer �� or <br /> RJO:lr <br /> Attachments <br /> 32585.GO1/ST03R1168 August 13,2003 <br /> ©2003 Kleinfelder,Inc. Page 6 of 6 <br />