Laserfiche WebLink
(2) If no water remains in the hole <br /> after the overnight swelling period, <br /> clear water shall be added to bring <br /> the depth of water in the hole to <br /> approximately six (6) inches over <br /> the gravel. From a fixed reference <br /> point the drop in water Level shall be <br /> measured at approximately thirty (30) <br /> minute intervals for four (4) hours, <br /> refilling six (6) inches over the <br /> gravel if necessary. The drop that <br /> occurs during the final thirty (30) <br /> minute period shall be used to calculate <br /> the percolation rate. <br /> (3) In sandy soils or other soils <br /> in which the first six (6) inches of <br /> water seeps away in less than thirty <br /> (30) minutes after the overnight swell- <br /> ing period, the time interval between <br /> measurements shall be taken as ten (10) <br /> minutes and the test shall be run for <br /> one (1) hour. The drop that occurs <br /> during the final ten (10) minutes <br /> shall be used to calculate the <br /> percolation rate. <br /> TABLE 2 <br /> Absorption Area Requirements for Private Residences and Other <br /> Establishments (Per bedroom column provides for residential garbage <br /> grinders and automatic sequence washing machines) <br /> Percolation rate (time <br /> required for water to fall one Required absorption area in (1) * <br /> (1) inch, in minutes) Square feet standard trench <br /> Per Per gallon of <br /> Bedroom waste per day <br /> 1 or less (2) * 70 . 20 <br /> 2 85 . 30 <br /> 3 100 . 35 <br /> 4 115 . 40 <br /> 5 125 . 45 <br /> 10 165 . 65 <br /> 15 190 . 80 <br /> 30 (3) * 250 1 . 10 <br /> 45 (3) * 300 1. 25 <br /> 60 (3, 4) * 330 1. 65 <br /> * (1) Absorption area for standard trenches is figures as trench- <br /> bottom area. <br /> * (2) In every case sufficient area should be provided for at Least <br /> two bedrooms. <br /> * (3) Unsuitable for seepage pits if over 30. <br /> * (4) Unsuitable for absorption systems if over 60. <br /> -12- <br />