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JAMES D ROBINSON, PE, CEG Page 7 <br /> September 1, 2010 <br /> Project Number 2010-1015 <br /> proposed project. The data discussed above was imported into a mass balance calculation and is <br /> presented below: <br /> • f <br /> I <br /> Summary of Mass Balance Analysis <br /> Results 9 mg/L of Nitrogen <br /> Acres ' <br /> Maximum average.daily flow 240 gallons <br /> Estimated N concentration QmgAL of nitrogen <br /> Denitrification 15 % <br /> Rainfall Percolation 5.76 in/yr <br /> Mass Balance calculation using the Hantzsche-Fennemore Equation is located in the <br /> appendix. <br /> 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 /> 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 4.9 mg/L of <br /> Nitrogen. <br /> JAMES D ROBINSON,PE,CEG ENVIRONMENTAL•ENGWEERING•GEOLOGY <br /> PHONE(209)642-5445•FAX(209)740-4303 <br />