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Inspection - Provide inspection pipe access through the top <br />of the mound so that the liquid level can be measured. The <br />inspection pipes should be installed at opposite ends of the <br />mound rockbed. The inspection pipes should provide access <br />directly into the portion of the distribution system that <br />contains or is ment to contain effluent. <br />Cover - Hay, a permeable plastic fabric, loamy sand backfill <br />and topsoil shall be used to cover the system as shown in <br />details E3 and E14. <br />Tanks - The capacity of the primary and secondary septic <br />tanks and of the pumping tank are '.fisted in the bill of <br />materials. The grade on the house sewer should be 1 foot <br />per 100 feet. The tank shall be equipped with a pump as <br />specified in the bill of materials. The pump shall be <br />actuated by a mercury float switch, as shown in attached <br />detail F13, that will turn the pump on when 25% of the <br />estimated daily flow plus the drainback quantity of effluent <br />are above the lowest 18 inches in the tank and will turn the <br />pump off when 18 inches of effluent remain in the tank. The <br />pump will be supported on concrete block such that the top <br />of the pump will be just below the lowest 18 inches of <br />effluent in the tank. An alarm will be located at a <br />conspicuous place inside the home and will warn using both <br />light and sound.when the effluen* reaches 3 inches above the <br />pump turn on level. A reserve pacity as specified, shall <br />be provided in the tank above the alarm actuation level. <br />The details of the pump and pumping tank are illustrated in <br />attached detail F7. <br />If we may be of further assistance <br />kindly contact us at your convenience. <br />Sincerely, <br />ADVANCE SURVEYING i <br />■es H. Parker P.E <br />nn. Lic. No. 9235 <br />A No. 208 <br />esident <br />Attachments: <br />INEERING CO. <br />i L.S. <br />in evaluating this data, <br />Design Sheet; Bill of Materials; uatails C11, C7, F17, F7, F13, <br />E12, E14, and E3; Boring Logs; Percolation Tests and Site Plan <br />