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TAtLE <br /> PRECIPITATION AND Eto DATA FOR TRACY, CA <br /> Month 2 Years in 10 will have more Eto Average Potential Deep <br /> precipitation than: (in/mo) Percolation (in/mo) <br /> (in/mo) (in/day) <br /> January 2.93 1.55 0.05 1.38 <br /> February 2.21 2.24 0.08 -- <br /> March 2.38 3.72 0.12 <br /> April 1.51 5.10 0.17 <br /> May 0.71 6.82 0.22 <br /> June 2.09 7.80 0.26 <br /> July 0.28 8.68 0.28 <br /> August 1.05 7.75 0.25 <br /> September 0.84 5.70 0.19 <br /> October 1.06 4.03 0.13 <br /> November 2.10 2.10 0.07 -- <br /> December 2.38 1.55 0.05 0.83 <br /> TOTALS in.) 13.18 57.0 2.21 <br /> The Table illustrates that evapotranspiration far exceeds precipitation,even when using higher rainfall <br /> data that exceeds normal rainfall data by 28% (10.33 in.vs. 13.18 in.) Only in the months of December <br /> and January, and possibly November and February would deep percolation potentially occur. This data <br /> illustrates a relatively high potential for there to be significant evapotranspiration(or bare soil surface <br /> evaporation)from the mound system disposal area,particularly around the edges of the mound. <br /> III. NITRATE LOADING STUDY FINDINGS <br /> The Nitrate Loading Study findings will be discussed in the following sequential categories: <br /> 1.) Projected wastewater flow volumes from the Church Restrooms and Kitchenettes. <br /> 2.) Anticipated wastewater characteristics. <br /> 3.) Nitrate loading to the soil and groundwater underlying the effluent disposal area. <br /> 4.) Septic system design criteria. <br /> 5.) The Conclusions and Recommendations Section. <br /> 8 <br /> Chesney Consulting <br />