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��rn .27 3 L x 1 - .25)+ (13 in/yr x 0.1 rng2N gnG 46- F CCN - (3.27 in/yr+ 13 in/yr) ----- - ��ri �. f N06w?i asnitrate-nitrogen (NO3-N) or 42.3 ppm as nitrate (NO3) }T -nitrate loading concentration n'the_rechar e'effluent'fro �- g . m the Bullfrog Landing` :W _ -- _ _ g arina is calciilated'to be near the Maki In' Contaminant Level for'nitrate �n drinkin water. The variables used in the calculations above are very conservative. For example, the use of 89.4 mg N/L, which was determined from actual effluent from wastewater flow from Flag City, a large commercial facility with both domestic and commercial wastewater flow characteristics. nitrogen-determined in-the'effluent from:this.-facility_is a higher nitrogen.concentration than 1 0 concentrations published in the sources referenced.in Section-VII of this report: (Additionally, ,variousresearchers pl"ace the nitrogen_reduction occurring in septic taiiks-at 10%to 20%. From the May 8, 2003 Symposium "Onsite Wastewater Treatment - Nitrogen Removal," Dr. Stuart Oakley of Chico State University states that "approximately 201/ 6f-tile-total'nitrogO generated is'removed in .the-septic tank." As noted above, this-estimate of-20%,was used-for.nitrogen reduction occurring in the-septic.tank. Thirdly'--an entire year-(3.65 Aays) was used in:the-cal.culations when the facility:will only.be operating approximate) six months out of any given year., IV. WASTEWATER MANAGEMENT SYSTEM - DESIGN CRITERIA SSS§ 3.7. The design of the pressurized mound disposal system for the project is based upon criteria for efficient operation, disposal field longevity, and environmental protection. Septic System components have been specified from Quanics, Inc. of Crestwood, Kentucky. An overview of the system operation is as follows:influent-waste-from the-two public-restrooms and'the Managers-Apartment.will gravity through six-inch ABS tight lines into a single compartment 125 gallon fiberglass sewage pump tank (Quanics Part Number: SS-125-S with a sewage pump Quanics PN: P-SS-12T). The fiberglass pump tank will be connected to the underside of the dock with stainless steel strapping and wood cribbing. Although the sewage pump will be a simplex pump system, another P-SS-12T pump unit and flexible effluent discharge assembly (Quanics PN: PDS- EDF-2.0) must be purchased. This pump package is referred to by Quanics as a "plug and play" system so that if there is a pump failure and the high water level alarm (Quanics PN: AC-A-0) activates, the failed pump can be easily removed and the new pump can be dropped into the fiberglass tank and plugged-in (Quanics PN: AC-JPB). *This r lacement„syste`m has heen.ao�roved Mike "" EHD. ,Another P-SS-12T pump must then be immediately purchased from Quanics, Inc. This sewage pump will pump sewage influent through a 2-inch flexible PVC tubing along the sides cah� ating_docks. Since the Manager's Apartment and Store float independently of the Food---Preparation Bar floating barge, this transport line must be flexible, and was therefore pre- approved by EHD staff. The transport line will then extend to the west end of this floatin bar e and up the M lank. 12 Chesney Consulting