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-_' R3579811 <br /> 'wO UEC Document No.: 1998 <br /> December 7, <br /> tanner is the determination of the carrying capacity of <br /> tic system designer /p gross acreage <br /> Of more practical use to the septic acts, the critical minimum <br /> the land. From the standpoint of groundwater nitrate-nitrogen imp /liter, the <br /> G may be defined as that which would result in a value of <br /> is a converto 10 gsion factor <br /> per developed lot, I =0,01344 W/A <br /> ted drinking water limit.' By setting in the above <br /> commonly accepted per al) and n� =10 mg /liter, and then rearranging <br /> having the units of dwelling units per year p g be calculated as follows: <br /> ex ression,the critical minimum gross acreage per developed lot, G, may <br /> P <br /> G = 0.01344 *W *[n_—d *nW —10]/[R* (10 -nOl <br /> Where... <br /> W: average daily waste water flow [gallons] <br /> R: average recharge rate of rainfall [inches/year] � d /gear Creek <br /> v t the Eight Mile Roa <br /> r i l�a collected a e rainfall <br /> District has reported during the past three <br /> SIC Flood Control D inches of rain has fallensite <br /> The 1 e of 21.6 at the <br /> data collection station indicates that an average /year. Based on the soil conditions existing <br /> consequently, R will be set to 21.6 inches /Y performed by Hantzche and Finnemore, the <br /> seasons; _ nW =30 mg/I iter, <br /> predicted values in the study P 0.25, <br /> and research data correlated with p 15 gallons/day for <br /> values are believed to be representative of the subject site condition <br /> g <br /> following The value for W was established by the typical <br /> 360 gal /day. occurs on the site, <br /> =1.0 mg/liter, and W = laundering, nor bathing <br /> 24 persons; <br /> considering that neither cooking, gallons /day. Plugging these values into the above <br /> /person was reduced to 1 g 13,500 square feet. <br /> estimation of 50 gallons/day p <br /> ion for G,the minimum gross acreage is calculated to be 0.31 acres or <br /> express north, south, east, or <br /> inimum 0.31 acreage is available for <br /> Considering that <br /> no nitrates are to be introduced into the soil from the areas directly <br /> replacement area, it is believed that the <br /> west of the proposed reP the above calculation is based on a worst case o e ahan <br /> previously, rade, providing <br /> denitrification. Furthermore, as noted P hs is at a depth of 45 feet below g <br /> groundwater, when adjusted for seasonal highs, the water table. <br /> adequate volume for denitrification to occur before reaching <br />