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SSS§ 6.4,6.5. On April 15, 2014, percolation testing commenced. No standing water was observed <br /> after the 24-hr soak period in either test boring. Consequently, EHD Perc Test Procedure #2 was <br /> conducted in which testing was done over a four-hour period to induce maximum soil saturation. <br /> The test results indicate a perc rate of 7.1 minutes per inch(min/in) for the EHD Official perc test <br /> and 7.6 min/in for the 48-inch depth perc test depth A summary of the perc test results with <br /> corresponding application rates in gallons of effluent accepted per square foot of soil,per day are <br /> found in Table 2: <br /> TABLE 2 <br /> PERCOLATION TEST RESULTS FOR THE DISPOSAL AREA WITH <br /> CORRESPONDING APPLICATION RATES IN GALLONS/FV/DAY <br /> 36 INCH DEEP PERC TEST BORING inch / 1.04 gallons/ftZ/day <br /> PERCOLATION RATE/APPLICATION RATE <br /> 48 INCH DEEP PERC TEST BORING 7.6 min/inch / 0.96 gallons/ft/day <br /> PERCOLATION RATE/APPLICATION RATE <br /> Application Rate adapted from California State Wafer Resources Control Board Guidelines,for the Design of Se wage Systems and is based on the Perc Rate. <br /> D. GROUNDWATER INFORMATION <br /> NLS§ ZA', SSS�4.1. Groundwater depths and elevations throughout San Joaquin County are <br /> illustrated on maps published by the County Flood Control and Water Conservation District. The <br /> most recent Lines of Equal Depth map (Spring 2012) indicates the groundwater depth to be <br /> approximately 18 feet. This corresponds with apparent water table depth determination by <br /> sounding the on-site domestic well. <br /> The 2012 Lines of Equal Elevation Map illustrates the groundwater directional flow to be generally <br /> in a northwesterly direction toward the San Joaquin River. Groundwater flow in this locale is <br /> extremely variable due to several influences such as the time of the year, and surrounding <br /> irrigation. <br /> SSS§2.1, 4.2. Since the property has been intensely farmed, and the surrounding properties have <br /> also been intensely farmed for several decades, therobability for nitrate contamination in the <br /> underlying soil and groundwater is signifi�t.' Howev ,the on-site well water reveals a C_ <br /> comparatively low nitrate concentratio 'f 17.4 mg/L, nitrate. <br /> NLS§ 2.2,3.1, SSS§4.2. As reference:,-the probect has an on-site water well for domestic and <br /> commercial purposes. The well will not be classified as a public well. The following Table <br /> summarizes the test results. <br /> 4 <br />