Laserfiche WebLink
04/29/92 16:21 $ 17196'23363 <br />BRTTLE M7.G0LC <br />Ilf IIIlilliilllllii <br />P.01 <br /> <br />.rm, <br />d <br />Bruce Humphries - 2 - April 29, 1992 <br />borderline between SM and SC classifications, and that SM type soil may have <br />permeabilities as high as 5 x 10-4 cm/sec, which is the value supplied by <br />SRK. <br />If Battle Mountain Gold has not performed any more sophisticated permeability <br />tests on the type 2 material, these tests should be required. If appropriate <br />permeability studies have been performed, the results need to be supplied to <br />the Division for review. I would recommend "falling head" type permeability <br />tests be performed on the drain layer material, both in the field, and in a <br />lab, and with sufficient frequency to determine an accurate permeability for <br />the material. <br />ACS/yjb <br />Enclosure(s) <br />cc: Jim Pendleton <br />Harry Posey <br />Jim Stevens <br />Larry Oehler <br />2907E <br />