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Rule 2.' Permitr <br />• actually moves through the pore spaces. The relationship vr=Ki/r4, is utilized to determine this <br />value (Fetter, 1980). From the above analyses: <br />K = 1.28 x 10-' ft/day (for site specific tests), 0.0408 ft/day (for regional values) <br />I = 0.0055 ft/ft <br />tte = 10 <br />Therefore: <br />v, = Ki/ne <br />v, _ (1.28 x 10-' ft/day) (0.0055 ft/ft)/10 % <br />yr = 7.04 x 10-5 ft/day or 2.56 x 10"Z ft/yr (for site-specific) <br />v, _ (0.0408ft/day) (0.0055 ft/fr)/10 % <br />vs = 2.24 x 10-' ft/day or 0.82 ft/yr (from regional data) <br />These velocities indicate that ground water seepage ranges from 2.56 x lUZ ft/yr to 0.82 ft/yr. <br />Transmissivity value derived for this zone indicates that water production for domestic use is <br />infeasible. <br />Primero Coal <br />• The Primero coal in the Lorencito Canyon Mine permit azea outcrops at approximately 6800 feet <br />AMSL. Total estimated thickness for this unit ranges from 0 to 9.3 feet with an average thickness <br />of 5.12 feet. Recharge to the Primero is via precipitation on outcrop surfaces, and from ittflow <br />from fractures or overlying units. Infiltration rates for this unit are anticipated as low. <br />Examination of a flow net of the system indicates that some of the recharge is discharged at the <br />outcrop surface area via evapotranspiration. In addition, springs would generally be anticipated <br />to emanate for the coal at the outcrop. Spring and seep surveys conducted during the baseline <br />period did not determine springs (with the exception of SPLJC-1) to exist at this particular outcrop <br />area. This may be the result of small amounts of recharge combined with the high <br />evapotranspiration in the area. <br />Groundwater in the Primero is characterized as being under confined conditions. Water was <br />apparent in all of the borings into the Primero; however, substantial flow increases through the <br />Primero seam were not apparent. Groundwater in the Primero appears to be continuous <br />throughout the zone. <br />The potentiometric surface of the aquifer was determined from data from wells MW~, MW-5, <br />and MW-6. The data indicates the flow direction to be to the east-northeast, with a gradient of <br />0.0078 ft/ft or 41.68 ft/mi. This flow direction is relatively comparable to the direction <br />• <br />PERMIT.<]6\D~mber Z0, 1996 2'04-17 <br />