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JAMES D ROBINSON, PE, CEG Page 7 <br /> March 23, 2010 <br /> Project Number 2010-1015 <br /> proposed project. The data discussed above was imported into a mass balance calculation and is <br /> L` presented below: <br /> Summary of Mass Balance Analysis <br /> Results 2.6 mg/L of Nitrogen <br /> hAcres 9.73 <br /> Maximum average daily flow 240 gallons <br /> FJ Estimated N concentration 35 m en <br /> l� of nitrogen <br /> 0 Denitrification 15 % <br /> Rainfall Percolation 5.76 in/yr <br /> 1 Mass Balance calculation using the Hantzsche-Fennemore Equation is located in the <br /> 1 appendix. j <br /> 1 Impact of Nitrogen Loading <br /> The subject property is relatively flat; therefore surface water is not anticipated to be affected <br /> by the any nitrogen loading. Subsurface water is located approximately 50 feet below the ground <br />�-, surface. Subsurface impacts are discussed below. <br /> 4. DISCUSSION OF NITRATE LOADING RESULTS <br /> i' Total Nitrate Impact <br /> Based on the mass balance calculations and the assumptions and averages used in this <br /> study, the nitrate loading balance from the proposed bouquet winery and restroom on the parcel <br /> should not cause any additional build up of nitrates in the aquifer by more then 2.6 mg/L of <br /> Nitrogen. <br /> JAMES D ROBINSON,PE,CEG ENVIRONMENTAL•ENGINEERING,GEOLOGY <br /> PO SOX 1744,VALLEY SPICINGS,CA 95252 PHONE(209)642-5445-FAX(209)7404303 <br />