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WATEP. INPOF.MATION <br />The limestone quarry operation is not expected to <br />directly affect surface or groundwater systems because of the <br />following conditions. <br />The proposed quarry site is located at the base of a <br />steep limestone outcrop at the head of a small dry hollow. <br />Unnamed intermittent and ephemeral drainages within the hollow <br />carry the spring runoff and the water produced b}> the infrequent <br />summer rai storms the short distance (approximately 1'~ miles) to <br />the Colorado River. <br />With the annual average precipitation being 17.5" <br />distributed fairly uniformly over the 12 month period (See Attach- <br />ment No. 1 to EXHIBIT K) and with the drainage area being fairly <br />small and the stream channels quite short, surface water runoff <br />is minimal and no appreciable flooding has been known to occur. <br />No data is available on the quantity or quality of runoff in <br />these normally dry stream beds. <br />The occurrence of ground water in the proposed area is <br />controlled largely by the local combination of topography, strati- <br />graphy, and geologic structure. Ground-water recharge on the <br />site area is minimal due to the steepness of the ridge face and <br />the absence of flat areas and permeable materials. The closest <br />occurrances of ground water discharge in the area are from a <br />spring approximately 1; miles to the north along Cascade Creek (a <br />separate drainage area) and from springs along the small perching <br />layer adjacent to the Colorado River approximately 1; miles to <br />the south. <br />