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' 05 November 2014 AGE Project No. 14-3119 Page 14 of 17 ' 1 = Volume rate of wastewater entering the soil averaged over the gross developed area (acres) in inches per year. The total wastewater volume for proposed project will be 360 gpd x 365 days of proposed operation = 131,400 gallons = 7.48 gallons per cubic foot = ' 17,566 cubic feet of wastewater. Does not account for evapotranspiration likely to occur. NW = Total nitrogen concentration of wastewater at 45 mg/L-N based on the average discharge. Accounting for the loss of mg/L-N in the septic tank at 15% 45-15%= 38.255 ' and the loss from the biomat at 10% 38.25 - 10% ='34.425 mg/L-N' d = Fraction of nitrogen concentration remover from the wastewater due to denitrification within the soil (20 percent for clay type soils). ' R = Average rainfall rate per year: 13 inches. Nb = Background nitrate-nitrogen concentration of rainfall recharge, from wastewater influences. ' COMMERICAL ' The Hantzsche / Finnemore (Nr) equation for commercial application: Nr = I x Nw (1-d)+ R x Nb = (I+R) Nr = The average concentration of nitrate-nitrogen in the recharged waste water parts ' per million of nitrate-nitrogen. I = Volume rate of wastewater entering the soil averaged over the gross developed area (acres) in inches per year. ' • The restroom wastewater volume for proposed project will be 510 gpd x 104 of 365 days of proposed operation (0.28 [28%] operation over 365 days a year) _ ' 365 days X 510 gallons = 186,150 gallons X 0.28 = 52,122 gallons on an annual basis. • The kitchen wastewater volume for proposed project will be 1,980 gpd x 52 of 52 ' weeks of proposed operation = 52 weeks X 1,980 gallons = 102,960 gallons on an annual basis. ' Volumes of wastewater are expressed as 52,122 gallons + 7.48 gallons per cubic foot = 6,968 cubic feet of restroom wastewater and 102,960 gallons = 7.48 gallons per cubic foot = 13,764 cubic feet of restroom wastewater. Does not account ' evapotranspiration likely to occur. ;W. NWrestrooms = Total nitrogen concentration of wastewater at 85 mg/L-N based on the i ' averagdischarge. Accounting for the loss of mg/L-N in the septic tank aC15% 85-15% ti L' = 72.25)nd the loss from the biomat at 10% 55.25 - 10% = 45.25 m /L-N -- NWkitc en = Total nitrogen concentration of wastewater at 45 mg/L-N based on the ' average discharge. Accounting for the loss of mg/L-N in the septic tank at 15% 45-15% = 38.25 and the loss from the biomat at 10% 38.25 - 10% = 34.425 mg/L-N d = Fraction of nitrogen concentration removed from the wastewater due to ' denitrification within the soil (20 percent for clay type soils). R = Average rainfall rate per year: 13 inches. Advanced GeoEnvironmenlal,Inc.