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GES <br /> GENESIS ENGINEERING&REDEVELOPMENT <br /> Mr. Steve Coldani <br /> March 31,2009 <br /> Page 3 <br /> Further strengthening the conclusion that cattle wastes are the source of the nitrate found in <br /> groundwater is the nitrogen isotope composition in the samples. In the pond and ditch water,the <br /> nitrogen is lighter(a lower 15N)than in the groundwater(a higher 15N). This shift is what is to <br /> be expected based on the change of form and loss of mass of the nitrogen starting in the pond <br /> versus that ending in the groundwater. The mass and isotopic composition of nitrogen shows <br /> that the land application,ponds, and ditches are the source of the nitrate present in the <br /> groundwater beneath Lima Ranch. <br /> Reporting Requirements <br /> Under Section13267 of the California Water Code (CWC) in 2007 the California Regional <br /> Water Quality Control Board Central Valley Region, issued the Monitoring and Reporting <br /> Program No. R5-2207-0035 (MRP) General Order for Existing Milk Cow Dairies. Pursuant <br /> Prohibitions A.4 of the MRP,Lima Ranch is required to report(to the RWQCB) <br /> contamination ofgroundwater that is a result of the collection, treatment,storage, discharge <br /> or disposal of waste within 24 hours. <br /> Respectfully submitted, <br /> Genesis Engineering& Redevelopment,LL(' �pR his <br /> 1661 <br /> Victor A. Fisher, Ph.D., P.G., C.E.G. <br /> Attachments: as noted <br />