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PERCOLATION TEST RESULTS WITH CORRESPONDING <br /> APPLICATION RATES IN GALLONS/FTZ/DAY <br /> 24 INCH DEEP PERC TEST BORING / 25.0 /inch /0.589 gallons/ft'/day <br /> PERCOLATION RATE/APPLICATION RATE l <br /> UNOFFICIAL PERC TEST <br /> 48 INCH DEEP PERC TEST BORING 25.0 min/inch / 0.589 gallons/ftZ/day <br /> PERCOLATION RATE/APPLICATION RATE <br /> UNOFFICIAL PERC TEST VERAGE= <br /> x.,28.6 mini / 0.548gallons/ft'/day <br /> Application Rates adapted from CaG ornia Slate Water Resources Centro(Boant On:Site Wastewater frealment Systems and is based on the Pere Rate. <br /> D. GROUNDWATER INFORMATION <br /> NLS§/2.1, SS§ 4. . Groundwater depths and elevations throughout San Joaquin County are <br /> at n ap <br /> illust on published by the County Flood Control and Water Conservation District. The <br /> Spring 2014 Lines of Equal Depth Map indicate the groundwater depth to be approximately 35 feet <br /> below grade. The Spring 2014 Lines of Equal Elevation Map illustrates the groundwater <br /> directional flow to be in a northeasterly direction. <br /> NL § 2Vte <br /> .1 SSS§ 2.1, 4�.2r Since the surrounding properties have been farmed for a number of <br /> dec , potential for nitrate contamination to the underlying groundwater aquifers can be <br /> considered significant. However, apparently due to the high clay content soil which certainly <br /> mitigates nitrate impact, the on-site well water is only slightly above the MCL at 47 p m as nitrate. <br /> NLS§2.3i, SSS§ 4.3, 4.4,4.5,4.6. The on-site domestic well was sampled from a hose bibb <br /> directly south of the pump house. The water was allowed to run for 30 minutes with the pump <br /> cycling several times to ensure that aquifer formation water was sampled and not stagnant welt <br /> casing or tank water. Nitrate and alkalinity water samples were drawn into a one-quarter liter <br /> plastic bottle. The agrichemical DBCP was not sampled per EHD request. The sample container <br /> was placed in a cooled ice chest,then transported to A&1-Weste cultural Labs in Modesto, <br /> under the attached Chain of Custody. Test results for the listed constituents are illustrated below in <br /> Table 3. <br /> TABLE 3 <br /> WELL WATER ANALYSIS <br /> Nb ELI. ANALYTE CONCENTRATION MAXIMUM CONTAMINANT <br /> FOUND LEVEL(MCIA <br /> On-Site "Nitrate 47 ppm 45 ppm <br /> Domestic Well ' ( s Nitrate) <br /> Sampled from — <br /> Hose Bibb Alkalinity 334 ppm N/A <br /> next to Pump <br /> House. <br /> Page -4- <br />