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<br /> <br />31 <br /> <br /> 4. The soil treatment area shall be at least as <br />large as set forth in Table IV. <br /> <br /> <br />TABLE IV <br />Required Soil Treatment <br />Percolation Rate <br />(Minutes per Inch) <br />Area in Sq Feet <br />(Per Gallon of Waste <br />Per day) <br />Area per Bedroom Sq <br />Feet <br />Faster than 0.1** - - <br />0.1 to 5*** 0.83 125 <br />6 to 15 1.27 190 <br />16 to 30 1.67 250 <br />31 to 45 2.00 300 <br />46 to 60 2.20 330 <br />Slower than 60**** - - <br />** Soil is unsuitable <br />for standard system if <br />percolation rate is <br />less than 0.1 minutes <br />per inch. <br />*** Consider <br />alternative sewage <br />treatment systems for <br />soils with this <br />percolation rate <br />range. <br />**** Soil is unsuitable <br />for standard system if <br />percolation rate is <br />slower than 60 <br />minutes per inch. <br /> <br /> <br /> b. Location <br /> <br /> 1. On slopes in excess of 12%, the soil profile <br />shall be carefully evaluated in the location of <br />the proposed soil treatment system and <br />down slope to identify the presence of layers <br />with different permeabilities that may cause <br />side hill seepage. In no case shall a trench <br />be located within 15 feet of such a layer <br />surfacing on the down slope. <br /> <br /> 2. Bed construction shall be limited to areas <br />having natural slopes of less than 6%. <br />