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$ B. Proposed Method of Treatment <br /> s 1) Pre-Treatment <br /> (per lot): One 1.200-gal. septic tank <br /> One 1,200-gal. pump tank <br /> 2) Effluent Transport: Small diameter pressure sewer . <br /> 3) Effluent Disposal: LPsystem <br /> LPP drainfield <br /> C. Process Desicn <br /> 1) Residential Septic Tank: <br /> 2) Residential Pump Tank: 1,200 gals. <br /> p 1,200 gals. <br /> 3) Pressure Sewer System: 3" PVC <br /> 4) Irrigation Pump Station: 7,000 gal. capacity, quad- <br /> , <br /> raplex pumps and controls <br /> 5) LPP Drainfields: 4 fields at 14,700 sq. ft. <br /> } each; 1002 reserve area <br /> State recommended design criteria for STEP sewage systems is provided <br /> as Exhibit B in the 'Appendix. <br /> Process Operation <br /> Domestic wastewater generated by single family homes on lots 1-14 will be <br /> discharged to a 1,200-gal., pre-cast concrete septic tank. The treated <br /> effluent will discharge to a second 1,200-gal. septic tank, which is <br /> equipped with a submersible ejector pump and pump controls. Each lot <br /> shall have its own septic tank/pump tank system. <br /> Each pump tank will discharge to a pressure sewer collection system <br /> located in the street right-of-way. The sewer will serve all 14 lots and <br /> will transport the septage effluent to a central process pumping facility. <br /> The central process-pumping facility shall be a masonry block tank with <br /> three separate chambers. Chamber 1 shall be designed for surge equaliza- <br /> tion and emergency storage. Chamber 2 shall house three static plate <br /> separators (Zabel Filters) which will reduce the effluent suspended solids <br /> level by nearly 40 percent. Chamber 3 shall be a quadraplex pumping cham- <br /> ber equipped with mercury float level control switches. Pump operation <br /> and dosing will be regulated by a main control panel located above ground,- <br /> at the pump tank. <br /> The treated effluent is then discharged to two of four drainfields, the <br /> - _alternate dosing of which is regulated by the control panel. The drain- <br /> fields have a soil loading capacity of 0.10 gpd/sq. ft. and a total field <br /> area of 58,300 sq. ft. <br /> • <br /> • <br /> __ Operation and maintenance of the system will be provided by a private <br /> contract operation and management firm, who operates the system in accord- <br /> ance with State criteria. <br /> CRAIG B.MOpGAN AND ASSOCIATES. <br />