Laserfiche WebLink
KLEINFELDER <br /> R-VALUE TESTING <br /> One resistance value (R-value) test was performed on a composite sample of the subgrade soils <br /> at your request. The R-value was a 36. We recommend that an R-value of 30 be used in <br /> pavement calculation design. We note that clayey soils may underlay the R-value 36 material <br /> and be exposed during grading operations, in which case the actual pavement subgrade materials <br /> may be significantly different than those tested for this study. Accordingly, if the observed <br /> subgrade conditions following rough grading vary from those anticipated, additional soil samples <br /> may need to be obtained and additional R-value tests performed. Should the results of the R- <br /> value tests vary significantly from the R-value used for design, design pavement sections <br /> provided may need to be revised. <br /> CONCLUSIONS <br /> Based on the above evaluation, we conclude that wastewater produced by the proposed leach <br /> field should not have a nitrate as nitrogen (l) concentration at the groundwater level greater than <br /> 10 mg/l. The results of our percolation tests indicate that a conventional septic tank/leach trench <br /> sewage disposal system with seepage pits should adequately serve the proposed development. <br /> The seepage pits should extend to the sandy soils underlying the site that were encountered at a <br /> depth ranging of about 10-'/Z feet below 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 /> KLEINFELDER,INC. /r 4Ron <br /> LLQ 3 -!Ronald E. LoutzenhiserC.E. Hemzen, G. . y T <br /> Staff Professional Senior Principal u� <br /> 61p. 3.31-03 <br /> REL:lr '�fa s`orEc"Vi <br /> Attachments ' OF C P, <br /> 17357.G01/ST02R327 August 8,2002 <br /> ©2002 Kleinfelder,Inc. Page 5 of 5 <br />