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r The West Side shallow perc rate of 42 inches, had a failing rate of 250 min/in, while the deep test at 23 ft had a similar rate to the East Side perc test at 14.7 min/in. The two deep tests were conducted at their respective depths because at the 20 ft to 23 ft depths, the soil appeared to transform from marginal permeability to favorable permeability at these depths versus the maximum 25-ft depth, where the soil appeared to have much tighter/denser characteristics. A summary of the perc test results with corresponding application rates in gallons of effluent accepted per square foot of soil per day are illustrated in Table 2: TABLE 2 PERCOLATION TEST RESULTS WITH CORRESPONDING APPLICATION RATES IN GALLONS / FT2/DAY EAST SIDE PERC TESTS WEST SIDE PERC TESTS PERC TEST DEPTH PERC RATE/ PERC TEST DEPTH PERC RATE/ APPLICATION RATE APPLICATION RATE 42 INCH 50 min/inch 42 INCH 250 min/inch 0.417 gallons/ft'/day 0.200 gallons/ft/day 240 INCH(20 FT) 15.6 mim/inch 276 INCH(23 FT) 14.7 min/inch 0.714 gallons/ft2/day 0.729 gallona/ft2/day Application Rate adapted from California Sow Water Resources Conml Board Guidelines for the Design of Sat gs Systems and is based on the Pere Rate. i/D. GROUNDWATER INFORMATION NLS§2.1, SSS§ 4.1. Groundwater depths and elevations throughout San Joaquin County are illustrated on maps published by the County Flood Control and Water Conservation District. The 1999 Lines of Equal Depth Map indicate the groundwater depth to be approximately 50 feet below grade, although the proximity of the Mokelumne River has a definite effect on groundwater and water table conditions. The 2003 Lines of Equal Elevation Map illustrates the groundwater directional flow to be difficult to discern. It is known from groundwater studies in this locale and for the winery facility that the Mokelumne River releases subterranean water, thus making flow direction to the north. ,NLS§ 2.2,3.1, SSS§ 2.1,4.2. Since the subject property and surrounding properties have been intensely farmed for several decades, the potential for nitrate contamination to the groundwater aquifers is significant. However, on-site production wells do not indicate there has been nitrate impact. Over many years of conducting water quality studies near rivers, it can be generally concluded that rivers have positive dilution effects on underlying aquifers and this appears to be the case for the winery facility. NLS§ 2.3, SSS§4.3, 4.4,4.5. 4.6. As referenced in the httroduction, the three industrial wells on the winery facility consist of the Production Well 91,which is the primary potable water supply, 5 Chesney Consulting