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LOGE 1605: Durst Winery NLS Addendum Page 3 March 21, 2016 Table 1. Estimate of Deep Percolation of Rainfall for Lodi, CA. Month Average Rain- Average Potential Annual Potential Deep Fall (inches) Evapotranspiration (inches) Percolation of Rain (inches) January 3.43 0.79 2.64 February 2.94 1.55 1.39 March 2.71 3.28 None April 1.31 5.17 None May 0.61 6.58 None June 0.15 7.51 None July 0.03 7.87 None August 0.04 6.85 None September 0.27 5.11 None October 0.93 3.29 None November 1.93 1.54 0.39 December 2.92 0.76 2.16 Totals 17.24 50.3 6.58 Notes: CIMIS evapotranspiration information at wwwcimis.water.ca.gov/cimis/for station 166 Lodi, CA. Rainfall average from station 045032 (Lodi, CA) at www.wrcc.dri.edu. Closest available stations to Site were selected. The nitrate concentration of rainfall was estimated to be 1 mg/L-N (Hantzsche and Finnemore, 1992), Quantity and Quality of Domestic Wastewater The estimated sewage flow rates for various uses are available from a number of references. The uses presented below were guided by the San Joaquin County On-Site Wastewater Disposal Standards (2003), Crites and Tchobanoglous (1998), and EPA (1980). The references indicate that 13 gallons for each employee is typical for an office worker, and 5 gallons is typical for a bar customer; these rates were used for the winery facility (Crites and Tchobanoglous, 1998). The estimated flow values discussed here should not be used for the design and sizing of the septic system. The design and sizing of the septic system should utilize the San Joaquin County Environmental Health On-Site Wastewater Disposal Standards which incorporate peak and surge flow factors. The estimates used in the On-Site Wastewater Disposal Standards may be greater than those discussed here.