2003-P06826 - septic - Laserfiche WebLink

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' ' Borin #1 and #2 indicates the site is underlain b hi h chroma loam g y g and sandy clay loam soils to approximately 3 feet. The parent material for the area, high chroma loam soils with many threads of ' calcium carbonates (often misidentified as low chroma iron reductions), was found to the depth of the borings. Many fine gray shale fragments were observed in the profile along with gray calcium carbonates and reddish iron concretions. These soil features are a result of the soil parent material not a ' fluctuating seasonal water table. The landscape position, soil parent material, elevation above known water table and the results of the ' soil investigation dictate that the site can support a sta.ndard subsurface drain field. ; The results of percolation tests, soil structure analysis and soil te�ure analysis lead to the selection of a soil sizing factor for this type of soil of 2.20 square feet per gallon. ' 4. Sizin of Tr - g eatment S s�— The OWS is designed for a two bedroom home. The estimated daily , flow for a two-bedroom home is 300 gallons. Sink and toilet fixtures need to be monitored closely to ensure proper operation. A leaking facet or toilets can more than double the daily flow to the OWS and cause hydraulic failure. ' S. Description of the Treatment Process— ' • Primary Treatment - Sewage is gravity discharged from the house to a septic, tank. Natural biological activities taking place inside of the septic tank will separate solids and suspended particles. Solids are reduced to some extent through this process. ' • Secondary Treatment—Effluent fram the clear zone of the sepric tank flows into a lift tank. Inside of the lift tank will be installed an Orenco Systems, Inc. Biotube pump vault and modified well pump. ' Suspended particles larger than 1/8"are filter out by the Biotube pump vault. • Final Treatment — Effluent is pumped to a new 660 square foot drain field. As the effluent trickles ' down into the soil biochemical processes remove harmful viruses and bacteria. 6. Description of Treatment S sy tem—(See figure, design sheets and data sheets for additional detail.) ' • Septic/Lift Tank — 1,500 gallon two compartment fiberglass septic tank. First compartment, 1,000 gallons, to be used as septic tank. Second compartment, 500 gallons, to be used as lift compartment. ' Proposed tank; Xerxes�' Corporation RST II Fiberglass Septic Tank. Tank will be ordered without an outlet and with a compartment baffle. Inlet of the tank must have cast in place rubber fittings to create watertight seals. Top of risers shall be 3" above finished grade to avoid runoff from entering through , the top of riser. Septic tanks should be pumped at a minimum of every three years. • Septic/Lift Tank Risers — 24" diameter heavy corrugated PVC pipe. A watertight seal must be ' created between top of tank and the each riser. Top of riser should be 1"- 3" above finished grade. • Septic/Lift Tank Riser Cover — 24" diameter fiberglass cover with gasket, Orenco Systems, Inc. ' model # FL24G or equivalent. Lift tank riser cover should include insulation. Do not bury riser cover. , '