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'' 2 <br /> JR Page 5 <br /> Consulting, Inc. March 19, 2009 <br /> Environmental• Engineering• Geology Project Number 2009007 <br /> Rainfall Contribution <br /> Rainfall data was collected from the Western Regional Climate Center. Evapotranspiration data <br /> from the California Irrigation Management Information System. Data was collected from the <br /> closest station to the subject property. The data is used to determine the amount of possible <br /> percolation. On months that precipitation exceeds evapotranspiration, the additional amount of <br /> rainfall is consisted the amount which could percolate into the subsurface. For this calculation <br /> runoff is ignored(more conservative). The data is located in the Appendix. <br /> Based on the researched data, the average percolation of rain is estimated to be 6.59 inches per <br /> year. The average amount of nitrate contained within rain is considered to be 1 mg/L. <br /> ✓Current On-site Sources of Nitrate <br /> Currently,there are two residences and a vineyard. <br /> Future On-site Sources of Nitrate <br /> In addition to the present sources of Nitrate, the proposed bouquet winery will provide an <br /> additional amount of Nitrate to the site. Based on the information provided by the client, there <br /> will be no employees (the bouquet winery will be operated by the current occupants of the <br /> property) and the winery is designed to produce a maximum amount of 3,500 gallons of wine a <br /> year. Based on the winemaking process the bulk of the wastewater will be generated during <br /> harvest and for several weeks thereafter, and again during racking and barrel washing about two <br /> to three months after harvest. Bottling may occur at any time throughout the year however this <br /> will occur offsite. Bas .n-the_tot4 amount bottled of 3,500 gallons an anticipated amount of <br /> wastewater would be 21,000 gallon pe year (6 to 1 ratio). The maximum average daily amount <br /> JR SQUARED CONSULTING,INC. ENVIRONMENTAL•ENGINEERING•GEOLOGY <br /> 6532 MCNEIL COURT,VALLEY SPRINGS,CA 95252 PHONE(209)772-3841•FAX(209)740-4303 <br />