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The requirement of EHD to install two, 33-inch diameter seepage pits places the final number of seepage pits at six, with an equivalent length of 420 feet of leachline. Based upon the lineal feet of leachline required, calculated from the ADF, BTC and SF, a total of 413 lineal feet of leachline is required. Therefore, the addition of two additional pits is warranted. NLS§ 4.1. The nitrate loading potential calculated on Page 10 indicates the percolating effluent may have a resultant nitrate concentration of I ppm as nitrate, which is well below the drinking water Maximum Contaminant Level (MCL). Of much greater consequence, however, is the amount of nitrogen emanating from the surrounding vineyard. Very little nitrogen is typically applied to wine grapes because nitrogen promotes vegetative growth and not reproductive growth. Lower soil nitrogen concentrations promote reproductive, or berry growth. The 25 foot soil boring was conducted adjacent to the existing vineyard. It is noted that the soil nitrate-nitrogen concentrations are low near the surface, thus theoretically indicating that the vineyard has not been over-fertilized. It is recommended that a septic tank effluent filter be installed in the 1,600 gallon existing septic tank if one does not exist. This will theoretically increase the lifespan of the seepage pits. Accurate "as-builts" of the septic system should be supplied to the Environmental Health Department by the septic system contractor after accurately determining what is existing along with the installation of the two seepage pits. All applicable "distance" and "setback" requirements must be strictly followed. The effluent disposal area must be barricaded and cannot be built upon, driven, parked or paved over, contain underground utilities, and cannot be used for storage. The 100% .replacement area can be designated within the vineyard to the south. None of these areas should be used for heavy equipment storage since this can cause soil compaction. The 100% Reserve/Replacement area must be denoted on the Site Plans. It is emphasized that all wastewater disposal (septic) systems have a lifespan, which is contingent upon many variables and therefore difficult to determine. A lifespan may be measured in months, or many years and is unpredictable due to the numerous operational and environmental factors involved. Lifespans can be positively influenced by limiting the on-site water use as much as possible. This may be accomplished by using low flow toilets and spring-loaded sink faucets. Restricting water use also includes checking for water leaks in toilets, dripping faucets, etc. on a regular basis. 11 Chesney Consulting