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C) . TABLE 4 PAER UNDERLYING WATER TALEYSISABLE ANALYSES UNDER POTENTIAL WATER TABLE ANALYSES U°NDER POTENTIAL EAST DISPOSAL AREA WEST DISPOSAL AREA UENT CONCENTRATION FOUNDCONSTITUENT CONCENTRATION FOUND te 234 mg/L Nitrate 90 mg/L eldahl 1.0 mg/L Total Kjeldahl 1.0 mg/L Nitrogen Nitrogen Total Dissolved 689 mg/L Total Dissolved 475 mg/L Solids Solids: Total Alkalinity.- 310.mg/L Total Alkalinity 335 mg/L Static Groundwater 9 ft bgs Static Groundwater : 9 ft bgs Level Level bgs-Below Ground Surface TABLE 5 SELECTED CONS'T'ITUENTS FP.O.M.TH��ON SITE ' :. � �� ` $ DOIVIESTIC WELL"WATERANALYSE5 CONSTITUENT . -^ e SAII%V TEST.RESULTS/:MCL Nitrate 0.45 mg/L / 45 mg/L Nitrite ND / i mg/L. Total:Dissolved Solids 250 mg/l I 1,000 mg/L Total Alkalinity 150 mg/L. / N/A Total K'eldahl Nitrogen- ND-- / NIA ND-Non-Detect MCL-Maximum Contaminant Level Calculation of Alkalinity Requirement for Nitrification The nitrate-nitrogen loading calculations on Page 17 are contingent upon the environmental factors :.required for nitrification to occur. These conditions include soil biological activity, pore-space oxygen content, soil temperature, pH,electrical conductivity, organic matter, cation exchange capacity, and alkalinity. Alkalinity in wastewater effluent is derived from the domestic well water supply in addition to the introduction of human wastes. Nitrification consumes approximately 7.1 mg of alkalinity for every mg of ammonia-nitrogen(NH4-N) oxidized. Nitrification of the Total Nitrogen(TN) concentration of 130-.mg/L;as determined by analyses of the Winery's domestic wastewater effluent on Page 16 would require: 130 mg/L NH,-N x 7.1 mg CaCO3 = 923 mg/L alkalinity. The alkalinity in the domestic water supply is 1.50 mg/L and 585 mglL in the wastewater, for a total of 735 mg/L, which is slightly deficient for nitrification to occur and may theoretically inhibit nitrification to an indeterminable degree. 9 Chesney Consulting