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system, which is minimum of (see pump sheet) 22 • foot head. <br />The quantity ofetTIuent delivered each pump cycle should be at least 230 gallons, but no more <br />than 260 gallons per cycle. <br />The amount of cflluent pumped ))cr cycle depends on the surface area of the pumping tank and <br />the setting of the pump start and stop. A relatively large pumping tank surface area is needed <br />with a small pump out depth. <br />There are several pumping situations that can be used with this on-site sewage treatment system. <br />These situations should be in concurrence with the City Ordinance and the contractor installing <br />the system. <br />Inspection Pipe <br />A vertical inspection pipe at least 1 1/2 inches in diameter to the lH>ttom shall be installed in the <br />rock layer of the moutjd. I'he ins|>ection pipe shall be located at an end opjx)site from where the <br />sewage tank ellluent enters the rock layer, fhe ins|>cction pipe shall have 3/8 inch, or larger, <br />perforations spaced vertically no more than 6 inches apart. At least 2 perforations shall be <br />located in the rock layer. The inspection pi|K ’ shall e.xtend to the bottom of the rock layer with <br />an elbow beneath it and shall be capped flush with or above the ilnished grade.