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Rate of recharge to the Lower Aquifer is apparently low and restricted to <br />direct infiltration of precipitation in outcrop areas along the Basin <br />margin. Some recharge may occur by downward movement from overlying strata <br />along fractures and t°aults. Ground water movement within the Piceance Basin <br />is generally from the basin margins toward the north-central portion of the <br />basin (Coffin et al. 1971; Weeks et al. 1974). <br />Movement of ground water in the Lower Aquifer, under the lease area, has <br />been determined by using data from existing wells MMC-IRI-1, MMC-IRI-9, and <br />MMC-IRI-10, and employing both the graphical and mathematical methods of <br />calculation. Results of these calculations show a groundwater velocity of <br />3.27 feet per year. The direction of groundwater flow is N34.5°E when the <br />graphical method is employed and N41.4°E when the mathematical method is <br />employed. This information, depicted in Figures G-20 and G-21, is assumed <br />typical for the entire lease area. <br />Strata below the Lower Aquifer do not carry appreciable quantities of <br />~• groundwater. No significant water-bearing intervals have been identified in <br />either the Garden Gulch or Douglas Creek members of the Green River <br />Formation. Similarly, lack of primary and secondary permeability in the <br />Wasatch Formation, which underlies the Green River Formation, preclude its <br />consideration as a significant source of groundwater (Weeks et al. 1974). <br />G.2.3.2.3 Existing Monitor and Test Wells <br />Of the wells presently near the Lease area, 11 were drilled by Multi Mineral <br />Corp. during 1980 and 1981 for the purpose of investigating bedrock aquifers <br />above the Saline Zone. They are identified as wells MMC-IRI-1 through <br />MMC-IRI-11 and are shown on the Well Location Map (Figure G-22). <br />The wells can be used to determine water level and water quality in both the <br />Upper and Lower Aquifers. Three wells (MMC-IRI-6, MMC-IRI-7, and MMC-IRI-B) <br />were rotary drilled for aquifer testing in the area referred to as the <br />"maxi-pad". This cluster of three wells (Figures G-22) were designed for <br />~ • the purpose of deterrt~ining aquifer anisotropy. <br />G-30 <br />