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: Ani-CECH <br /> <br />WASTE DISPOSAL SYSTEMS <br /> <br /> 1242 $1st Ct. N W <br /> Salem, OR 97304 <br /> 364-7470 <br /> <br />SAND FILTER PROPOSAL <br /> <br />Smetco <br />14633 Ottaway Rd, N.E. <br />Aurora, Or. 97002 <br />Marion County, Oregon <br /> <br />INTRODUCTION <br /> <br />This narrative description is intended to identify specific <br />requirements for the construction and installation of an <br />intermittent sand filter on the above property° The waste <br />disposal system proposed for this site is designed to treat <br />septic tank effluent prior to final disposal in a standard <br />drainfield of reduced size. The designed flow of this system <br />will be 600 gallons per day. This figure based on 15 gallons per <br />day will accommodate up to 40 employees total per day. <br /> <br />SITE PREPARATION <br /> <br />The critical components of the waste disposal system have been <br />sited on the property and the necessary elevations taken. The <br />elevations are shown on the attached hydraulic cross section. <br /> <br />III. SEPTIC DOSE TANK <br /> <br />The septic tank unit will be a Waite Concrete Products 1500 <br />Eallon tank, The pump chamber will be a Waits Concrete 1000 <br />gallon dose tank with manholes to the surface. This tank will <br />be provided with a Orenco Systems effluent pump system and <br />provided with a EPO 411 effluent pump~ MF-AB Mercury float switch <br />assembly, and a ASF-1 control panel\alarm unit which will shut <br />the septic dose tank pump if the sand filter pump unit <br />malfunctions. If a pump cycle counter is required~ this will be <br />the responsibility of the owner as this should be wired into the <br />electrical circuit at the electrical panel to provide protection <br />and ease of monitoring the devise. A manhole access will be <br />provided to the ground surface for easy access over both the <br />septic tank and dose tank. The manhole lids will be provided <br />with gaskets to prevent odors from escaping. <br /> <br />A water test of the tanks will be conducted to assure no leakage <br />will occur. <br /> <br />The hydraulic elevations and computations are found on the <br />attached plans which were used for pump and line si~tng. The <br />critical elevations are found on those drawings and relate to the <br /> <br /> <br />