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F head= 1.3 (conv. factor)x distal pressure 5 ft=6.5 ft nce between the pump and the highest elevation of the distribution network =4.0 ft force main =8 ft(250 ft of force main+manifold)+add-on friction loss of 0 ft= + 8= 18.Sft PUMP REQUIREMENTS Pursuant to EHD requirements, the pumping system for the effluent disposal will consist of a duplex pump arrangement, with the pumps alternating back and forth. A duplex pump system, each pump pumping 38 gpm against 18.5 feet of head. DOSE VOLUME A dose volume of-20%of design flow(425 gals ADF)shall be used=85 gallons. Use 10 times the lateral void volume: Lateral dia.= 1.0 in., Lateral length= 50 ft,Number of laterals= 8, Lateral void volume= 0.041 gal/ft Net Dose Volume= 5 x 50 x 8 x 0.041 = 82 gals/dose. Floats shall be set to dose an approximate volume of 85 gals/dose By having orifices in the 12 o'clock position with shields,the pumps will not have to charge the piping network at the time of every dose. E. MONITORING Two inspection ports or observation tubes shall be installed within the mound system to observe the sand filter-effluent interface for effluent ponding. The tubes are to be"inverted tees" and be 4 in. PVC. One-eighth inch screens are to be placed on each open end of the tubes and pea gravel placed in front of the screens to prevent infiltration of sand from the sand filter material. V. CONCLUSIONS, RECOMMENDATIONS AND MAINTENANCE SSS§ 5.4. The soils underlying the proposed mound system disposal area for the Southwinds Church show acceptable permeability that can be considered exceptional for the short-term, considering the clay soil type. For the long-term acceptance rate, the permeability of the soils will no doubt slow based on the numerous factors described, but primarily due to future biomat formation. Lthis gn considerations have been incorporated into the construction of the mound system to mitigate omparatively rapid permeability. After native soil preparation as described, four inches of peat rial shall be laid down over the basal area footprint of the mound. The filter sand is then to be lled on top of this peat material. § 4.2 From the soil chemistry test results, it appears that there is denitrification tial wi n the soil profile down to the water table depth, based upon the soil organic matter nt, the soil pH and the soil cation exchange capacity. 16 Chesney Consulting