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LIVE OAK GEO ENVIRONMENTAL, INC. <br /> 407 W.Oak St., Lodi, CA 95240 ❖ (209)369-0375 •:• logelodi.com <br /> November 20, 2019 <br /> Project Number: 1938 <br /> Michael Kith, Lead REHS <br /> San Joaquin County Environmental Health Department <br /> 1868 E. Hazelton Ave. <br /> Stockton, CA 95205 <br /> Regarding: Addendum to Nitrate Loading Study <br /> Kusalakari Property <br /> 9698 S. Priest Rd., French Camp, CA <br /> Original report dated September 4, 2019 <br /> Mr. Kith: <br /> Based on our phone conversation on November 15, we have prepared this addendum <br /> to the above Nitrate Loading Study. <br /> During our call, you indicated that an average daily flow rate of 10 gal/person should <br /> be used for all day visitors to the religious facility. This is the rate typically requested <br /> by the Environmental Health Department for a church with a kitchen. We originally <br /> used a lower rate because the proposal before the County restricts the use of the <br /> kitchen to meditation retreats and certain other events, and daily visitors are not <br /> permitted to make use of it. Nevertheless, we have revised the calculation to include <br /> the rate of 10 gal/person as requested. <br /> You also stated that the congregants at events should be listed as 225 rather than the <br /> 200 presented in our original report. When I spoke with the Project Management team <br /> concerning your comments regarding our report of September 4, 1 was informed that <br /> during a meeting with County staff on June 26 the number of congregants attending <br /> special events was amended to be 185 based on the amount of parking to be <br /> provided. Consequently, we have included the new value of 185 congregants per <br /> event in the revised calculation below. <br /> Revised Nitrate Loading Calculation <br /> As in the previous report prepared by our office, the method utilized for the nitrate <br /> loading analysis is based on a mass balance formula discussed in a published paper by <br /> Hantzsche and Finnemore (1992). The Hantzsche and Finnemore equation is a <br /> conservative approximation of ground-water nitrate-nitrogen concentration resulting <br /> from the combined effect of on-site sewage disposal systems and percolating recharge <br /> waters. <br /> Environmental Engineering Geology ❖ Geophysics <br />