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,~ ~~ <br />~ 4.®~ ~®iB TesP <br /> A. location: <br />i' <br />Soil pertolation tests shall be performed by a Registered Professional Engineernr at <br />® ]east three (3) test holes in the area in which the absorption system is to be located, <br />® spaced uniformly over the proposed site, except there shall be no less than one (1) t~:st <br />~ hole in any twelve hundred (1200) square foot azea of the absorption system <br />A <br /> B. Dimensions: <br />L' <br />S The percolatior. test holes shat most preferably be six (6) inches ir. diatt~ter. The <br /> diameter may vary from fow (4) to twelve (12) inches in width or diameter where <br />. prohibitive soil or geological conditions exist. The holes shall be terminated at the <br /> depth of the proposed absorption system and the percolation tests shall be conducted <br />~ within those soils comprising the fow (4) feet of acceptable soils beneath bottom of <br />r absorption field. <br />', <br />~ C. Procedure: <br /> Percolation test holes shall be filled with water to a depth of 14 inches or more at le~ist <br />_D 8 bows, but not more than 24 bows, prior to conducting the water percolation test, <br />~ - and shall be refilled with water if necessary to a depth of at least 14 inches prior to <br /> firtal measurement. Measure the time for the water to drop one (1) inch within the <br /> lower six (6) inches of the percolation test hole. The percolation rate shall :oe <br />~ reported in minutes per inch drop. <br />l <br />'~ D. Calculation: <br /> The field percolation rate shall be the average rate of the percolation tests after rare <br /> has stabilized in all the test holes observed in the proposed absorption azea. A <br /> percolation rate of between five (5) and sixty (60) minutes per inch is reqused except <br />~yD as provided in Section 6.OI.B.1 of these guidelines. <br />~ E. Performance of Percolation Tests: <br />~ 1. The percolation test shall be performed by or under the supervision of a <br />~ Registered Professional Engineer or by a competent technician of the local <br />health departrr~nt unless the tests were previously performed by a Register <br />~ Professional Engineer and the results thereof submitted with the application <br />;'~ for a permit. <br />2. If the applicant demonstrates that the system is not dependent upon existurg <br />soi] absorption rates, the requirement for percolation tests may be waived. <br />~ 29 <br /> <br />