Laserfiche WebLink
FFpeople <br /> e of restrictive layer. Sumps may also be used if there is an increase in the number of <br /> g the system, leading to greater wastewater flows than those anticipated in this report. <br /> histicated groundwater monitoring over a long period of time, it is unknown as to the <br /> enact groundwater depth at different times of the year, as well as the groundwater directional <br /> flow. However, sufficient data has been collected and analyzed to determine that the <br /> groundwater table is currently an acceptable distance below grade for there to be adequate <br /> biological treatment, according to published scientific literature. Groundwater analyses of a well <br /> 200 feet to the southeast of the project indicates a very low nitrate impact to the underlying <br /> drinking water aquifers. <br /> Mounding effects under the leachfields should be of little concern since the saturated zone is at a <br /> sufficient depth and the anticipated wastewater flows are sufficiently low to prevent mounding. <br /> However,under severe climactic stress and heavy wastewater flows, effluent and rainwater may <br /> pool on the top of the referenced clayey silt layer,thus inducing a mound. <br /> Accurate "as-builts" of the septic system to be installed in the future must be supplied to the <br /> Environmental Health Department and all applicable "distance" requirements must be strictly <br /> adhered to. <br /> The nitrate loading calculations demonstrate groundwater under the leachfield, to a thickness of <br /> 2.5 feet, will be theoretically impacted to the current Maximum Contaminant Level (MCL) <br /> drinking water standards. Considering the thickness of the top aquifer, which is greater than 2.5 <br /> feet, influence from the septic system can be considered "low impact" when the facility is <br /> considered on an areal basis. This does not take into account the surrounding facilities and their <br /> contributions. We recommend periodic well water monitoring of the domestic wells in this <br /> general locale. Each facility in the area may want to test their wells every other year for nitrate <br /> and chloride concentrations. If there is an increase in the concentration of these constituents, <br /> further treatment to prevent nitrification may be warranted. <br /> 7 <br /> Vadley Ag Research <br />