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Page 2 <br />of an approved aerobic septic tank system or pressure dosing smaller amounts of effluent into a grid <br />type filter bed -metered out over time. <br />An outside consultant estimates that the Fescue grass proposed as vegetation to uptake Nitrogen in <br />this design would only remove about 10% of the nitrogen this design has proposed to remove. <br />Dr. Stewart Oakley discusses disposal of household sewage in "Onsite Nitrogen Removal", University <br />Curriculum Development for Decentralized Wastewater Management, September 2004. He states <br />that an average household of four would create up to 50 lbs. of Nitrogen per year and that the effluent <br />would have to be evenly dispersed over a Y4 acre parcel or 10,890 sq. ft. to be effectively used by a <br />Bermuda grass lawn. The design for these filter beds are approximately 750 sq. ft. <br />4. The design should not be dependent on a homeowner maintaining the vegetation over this leach area <br />for the life of the system. Failure of the homeowner to maintain the growth of vegetation over the <br />system would cause the system to not function as designed and fail to remove any nitrates from the <br />effluent. <br />If you have any questions please contact at wfox(L-b_sjgov.org or (209) 468-3420. <br />Respectfully, <br />Wayne Fox, REHS <br />Interim Director of Environmental Health <br />Nitrate Well 10/27/15 <br />