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TABLE 4 <br /> PRECIPITATION AND Eto DATA FOR LODI, CA <br /> Month 2 Years in 10 will have more Eto Average Potential Deep <br /> precipitation than: (in/mo) (in/mo) (in/day) Percolation (in/mo) <br /> January 5.04 1.04 0.03 4.00 <br /> February 3.98 1.66 0.06 2.32 <br /> March 4.03 2.88 0.09 1.15 <br /> April 2.34 4.36 0.14 <br /> May 0.72 5.63 0.18 <br /> June 0.35 6.76 0.22 <br /> July 0.32 7.91 0.26 <br /> August 0.34 7.09 0.23 <br /> September 0.92 5.20 0.17 <br /> October 1.66 3.56 0.11 <br /> November 3.98 1.69 0.13 2.29 <br /> December 4.43 1.00 0.14 3.43 <br /> TOTALS(in.) 23.00 48.78 13.19 8.67 <br /> This chart illustrates that evapotranspiration far exceeds precipitation, even when using higher <br /> rainfall data that exceeds normal rainfall data by 56%. Only in the months of January, February, <br /> November and December would deep percolation potentially occur. This data illustrates a relatively <br /> high potential for there to be significant evapotranspiration (or bare soil surface evaporation) from a <br /> wastewater disposal system design that may take advantage of evapotranspiration during favorable <br /> months of the year. <br /> ' III. NITRATE LOADING STUDY FINDINGS <br /> A. WASTEWATER FLOW VOLUME PROJECTIONS AND CHARACTERISTICS <br /> Wastewater Flow Volume Projection <br /> To determine nitrate-nitrogen loading from any project, wastewater flow volumes must be <br /> determined as accurately as possible. Table 3: Estimated Future Working Day Sanitary <br /> Wastewater Flows and Septic Tank Information found in Appendix D estimates the future total <br /> annual domestic wastewater flows to be 2,232,450 gallons. <br /> 7 <br /> Chesney Consulting <br />