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_ I Theslower perrnpability of Area#2 cause ythe lighter. ay ghter, more compact soil dbe ripped with antis ori.three-foot slip plow to-op n the soil.structure, ith approval m the EHD and tlhi�ePpf Regiona 'W`ater Quality Con,trol'Board. A tough the soil will e-compact, by pl ting adeep-rooted . shin the disposal area, this may assist in4naintaining soil cture and to uptake residual nitrogen. It is to be noted.that drrp dispersal litres ave a.&inite lifespan. As stated '-the 2006'report,'because-of the adnate pore space characteristics of the silty, fine sand -indigenous soils, capillary action maybe facilitated.` Consequently, with rotational applications of effluent through a pressurized drip system, along with carefully applied domestic irrigation water, the surface soils can also manage the anticipated effluent flow volume through evapotranspiration six and possibly eight-months out of the year. Grass rant-uptake can be u , P Yy pquantified.and monitored by analyzing the-nitrogen content.and the volume of the mowed grass clippings from the drip irrigated disposal area.. Jt is important the grass be medium-to-dee rooted. When the grass is mowed, the clippings must not be mulche-d-6T&intoThh-elhatcch Tl ppings''must be bagged and discarded. Mulching continues-and comjletes the nitrogen cycle and introduces additionalwnit,Kogen, back into the root zone through mineralization.. The nitrate loadin� ulations demonstrate that the nitrate-n ogen oncentration in the influent �1-from the KSC Travel C nter as proposed _ eoretically b`e 4.6x ov r the MCL. Recirculating sand filter treatment sh uld be b sed�on a des' a �at th influe y substantially reducing or eliminating solids.by e use f septic tanks and filters. SF most successful when the influent does not exceed 300 L BODS; 180 mg/L (Total Nitrogen),15.0 mg/L TSS and 25 g/L FOG_(Rcf. 2): As observe WNitxmgewf bm Flag City is approximately one-half this maximum value (89.4 mg/L vs. 180 rr g/L). BODS is also under the maximum value (244 mg/L vs. 300 mg/L),while the TSS concentration exceeds the maximum value (264 mg/L vs. 150 mg/L). Total Nitrogen (TKN) concentrations can be reduced approximately 20%within the septic tank i environment'(Ref. 9, Pg. 9). Therefore,.a raw influent with a TKN.of 89.4 mg/L can be reduced to: 89.4 x 20%=72 mg/L TKN, thereby reducing the recharge effluent to 37 mg/L nitrate-nitrogen. The RSF can reduce nitrogen concentrations typically 40% - 50% (Ref 5, Pg. 742): 72 mg/L x 50% = 36 mg/L TKN,which reduces-the recharge effluent to 18 mg/L nitrate-nitrogen, or 8 mg/L over the MCL. Further reductions in nitrogen in the recharge effluent can be made by increasing the denitrification potential of the RSF through design parameters. These procedures may potentially " reduce the nitrate-nitrogen concentration in the effluent to under the MCL of 10 mg/L nitrate- nitrogen. The EHD will r quire flowmeters to measureAho4cdal volume of effluent dispersal on the subject property. If tota ffluent volume cee 20,000.gp , he Regional Water-Quality Control Board - will have immediat -J ' n over-the � .e s`project regarding wastewater treatment and disposal. . I I Page -15- , Chesney Consulting