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[.'~ <br />~. <br />MINING AND RCCLAMATION PLAN <br />h9T. GUNNISON NO. 1 MINE <br />Since our field tests yielded: <br />V = 18.74 gallons <br />t = 0.925 days (1332 min) <br />s' = 3.1 feet <br />then <br />T = 0.52 gpd/ft. <br />.-~ <br />October, 1979 <br />Revised [vlarch, 1981 <br />Revised August 28, 1981 <br />Revised January 25, 1982 <br />Revised February 5, 1982 <br />While this should be considered an order of magnitude number, the low <br />transmissivity value seems to fit well with the very slow recovery rate. <br />I" <br />To summarize, with~the exception of those shallow wells near the mine adit that <br />were affected by dewatering activities, the aquifers tested can be characterized as <br />poorly saturated with low permeability. <br />References Cited <br />Bouwer, Herman, and Rice, R. C., 1976, A Slug Test For Determining Hydraulic <br />Conductivity of Unconfined Aquifers with Completely or Partially <br />Penetrating Wells, American Geophysical Union, V/ater Resources Research, <br />Vol. 12, No. 3. <br />Lohman, S. \V., 1972, Groundwater Hydraulics, U.S.G.S. Prof f. p. 708. <br />Papadopulus, S. 5., Bredehoeft, J. D., Cooper H. H., 1973, American Geophysical <br />Union, Water Resources Research, Vol. 9, No. 4. <br />Skibitzkc, H. L-., 1958, An equation for potential distribution about a well being <br />bailed, U.S.G.S. open file report. <br /> <br />2-303x7 <br />w <br />