Laserfiche WebLink
Table 1 <br />Aggregate Industries, Inc. <br />Platte Valley Pit Model Analyses <br />Model Sensitivity Analyses Summary <br />Hydraulic Conductivity <br />nominal value for model as per USGS reports: 688.4 Feet per Day <br />Range of values for Sensitivity Analysis: 68.84 to 6884.0 feet per day <br />Value Results <br />68.84 no visible impact on contour configuration or magnitude <br />344.00 no visible impact on contour configuration or magnitude <br />1000.00 no visible impact on contour configuration or magnitude <br />6884.00 some minor (<0.5 foot) increase in drawdowns; some extension eastward of <br /> 2-foot contour <br />Stream Conductance (Wm ratio) <br />nominal value for model as derived from aquifer K'0.1 and m of 1.0 feet = 68.8 <br />Range of values for Sensitivity Analysis: 1.0 to 688.4.0 feet per day <br />Value Results <br />1.0 some difficulty in matching calibration heads; little impact on drawdowns <br />6.8 some difficulty in matching calibration heads; little impact on drawdowns <br />100.0 no visible impact on contour configuration or magnitude <br />200.0 no visible impact on contour configuration or magnitude <br />688.4 no visible impact on contour configuration or magnitude <br />