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F , SS 6.7. From the soil chemistry test results, it appears that there is significant ion ote al from the 24-inch depth to the 40-inch depth. Although this cannot be y pro n, what is interesting is the high soil nitrate-nitrogen concentrations are of unknown e 24-inch depth nitrate-nitrogen concentration for example, is extremely high at 285 ppm, tically decreases to 87 ppm in the short distance of 16 inches. From the soil analyses, it can be reasonably concluded that the water table and underlying groundwater must be significantly impacted with nitrate. Unfortunately, this could not be quantified from the nearby well since it was inoperable since there was no electricity to the well. SSS§ 6.8.! The Average Daily Flow is calculated to a 375 g s/day from the Church and�Rftehen/ Meeting Building. The Application Rate at the native oil-e uent interface is presently 0.757 ). gdis/ftz/day based upon the observed infiltration rate. i a mound system basal area0 f1 x 85 feet=2,550 ft2 the soil-effluent interface hould accept the tjcipat d effluent flow reacifly Even with along-T cceptance Rate of 0.2 gals/ftZ/day still gives an ADF of. 2,550 ftZ x 0.2 gals/ft2/day='510 gpd. NLS§4.1. The nitrate loading potential calculated on Page 14 indicates the percolating effluent may have,a res ltant nitrate-nitrogen concentration of 10.0 ppm, which is right at the drinking water Maxi Contaminant Level(MCL). As referenced, unfortunately, the nitrate concentration in the underlying groundwater aquifers could not be quantified due to the inoperable well. However, as referenced, based on the soil chemistry test results, the underlying aquifers have been assuredly impacted with nitrate. Consequently, the recharge effluent water could theoretically be adding a dilution effect to the underlying water table. The building designer/engineer/architect, the plumber, the landscaper, and the wastewater disposal system installer must all coordinate so that proper grades are established and maintained. In addition, effluent lines should not cross fresh water or electrical lines. If crossing cannot be avoided, the wastewater lines should cross under fresh water lines and be adequately encased per EHD guidelines. Because of the high water table, the septic tanks must be initalled as high in elevation which would be approximately seven feet below existing grade. Ifgroundwater is encountered during tank lac aps and deadmen must be used to counteract buoyancy. As reference only one-thir the tank contents should ever be pumped out. Secondly, the influent line(assum ne line) coming from the Church building must also be as high in elevation as possible. The line must come through the footing of the building. The cotttractor, plumber-.and septic systQm.installer all most be made aware of this. 20 Chesney Consulting