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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 SOIL TYPE, PERCOLATION RATES AND APPLICATION RATES IN GALLONS/FT /DAY 24 INCH DEEP PERC TEST BORING 5.5 min/inch / 1.20 gallons/ft2/day LOAMY SAND PERCOLATION RATE/APPLICATION RATE 42 INCH DEEP PERC TEST BORING 4.7 min/inch / 0.85 gallons/ft2/day SAND PERCOLATION RATE/APPLICATION RATE Application Rate adapted from EPA 615'R-!N'008 Onsite Wanewmer 7reatment Systems Mmmal and is based on the soil classification. D. GROUNDWATER INFORMATION NLS§ 2,1, SSS§ 4. . Groundwater depths and elevations throughout San Joaquin County are illustrated on s published by the County Flood Control and Water Conservation District. The Fall 2014 Ines of Equal Depth Map indicate the groundwater depth to be approximately 10 feet below grade. The Fall 2014 Lines of Equal Elevation Map illustrates the groundwater directional flow to be in a northeasterly direction. NGLS§ 2 3.1,SSS 2.1, .2. Since the surrounding properties were farmed for a number of decades,the potentihYt"or nitrate contamination to the upper groundwater aquifers can be considered significant. However, from extensive studies conducted for EHD, high nitrate groundwater has not been observed in areas near large bodies of water, or near rivers. Both a large body of water and the San Joaquin River exist to the south and southwest of the property. Correspondingly, the on-site well has a nitrate concentration of 0 ppm(Below Detectable Limits - BDL) as nitrate. NLS§ 2 SS ,4.4,4.5, 4. The 10-inch diameter, on-site domestic was sampled from- a directly the south of the well. The water was allowed to run for3CTm'mutes with the p cycling several times to ensure that aquifer formation water was sampled and not stagnant well casing water. A nitrate water sample was drawn into a one-quarter liter plastic bottle and the DBCP/EDB sample was drawn into three VOC glass vials. The four sample containers were placed in a cooled ice chest and then stored under refrigeration until delivery to the laboratory, under the attached Chain of Custody found in Appendix E. The constituents tested were for nitrate and Dibromochloropropane (DBCP) and Ethylenedibromide(EDB), with the test results illustrated below: 4