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F7andsince <br /> each of these sources and attenuating factors could be quantified on a mass7the <br /> be that nitrate input is now roughly equivalent to output, or attenuation. Girigation recharge is the largest single contributor to groundwater nitrate cosurrounding land has been farmed for several decades, it is assumed that ths in the underlying groundwater should be much higher than those observe <br /> attenuating factors were not significant. This is particularly evident with the soil nitrate-nitrogen test <br /> results of the sampled depths. The denitrification potential appears to be a factor due to the clay <br /> content of the indigenous soils, the higher soil pH, high soil moisture content and organic fraction <br /> content. <br /> 8. LIMITATIONS <br /> The findings, opinions, conclusions and design criteria expressed in this report are based upon <br /> information from standard engineering data and analytical test procedures, contemporary scientific <br /> literature and agency consultations. Information in this report is deemed reliable by the sources from <br /> where it was obtained. Results of the percolation and infiltration testing should be assumed to only <br /> represent the subsurface conditions encountered in the specific area of testing and not necessarily of <br /> the entire areas allocated for future wastewater disposal. <br /> Our report is based upon current scientific knowledge to assess factors which are extremely variable <br /> and complex within the environment. Although there are several methods to design, size and predict <br /> impact from septic systems, San Joaquin County Environmental Health Division Sewage Standards, <br /> federal and state publications and information from the scientific literature have been employed for <br /> these purposes, and for this project. Therefore,no guarantee or warranty concerning any aspect of <br /> this investigation or design criteria is expressed or implied. <br /> We appreciate the opportunity to provide this service for you. If there should be any questions <br /> regarding the information contained in this report,please contact the undersi ed. <br /> Q9,13fESSIOpq� <br /> Respectfully submitted, jJyO �CALLgyyEy�, <br /> CHESNEY CONSULTING <br /> � " 0.14977 A <br /> ENy 1 RON4lyp'C <br /> 1.,o CH Exp. 3.31.0"1 <br /> V;>� IV1 <br /> O�U Sti N� sl Ct <br /> 'i O No. 04675 A�OF CAUE�@ <br /> * Expires: aO • <br /> r� Gp CALIFo <br /> Don Chesney, R.E. .- I Harold Callahan,P.E. <br /> Registered Enviro ental Assessor#4675 Registered Civil Engineer#14977 <br /> Civil Engineer Intern#XE96643 <br /> Page-25- <br /> Chesney Consulting <br />