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Dames & Moore, 1999 - USDA Forest Service

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high as 0.1 to 0.2 feet per foot (Ftlft) beneath tailings piles 2 and 3. Groundwater gradients generally<br />

decrease closer to Railroad Creek, to approximately 0.05 Wft. Beneath tailings pile 1, groundwater<br />

gradients range as high as 0.1 ft/ft and as low as 0.03 Wft. Copper Creek in the vicinity of the tailings piles<br />

is shown as a losing stream (i.e., the base of the stream is above the local groundwater elevation) based on a<br />

comparison of the elevation of Copper Creek at the southern edge of tailings piles 1 and 2 (mapped to be<br />

approximately 3,270 feet above MSL) to local groundwater elevation at well CC-BKG (based on a civil'<br />

survey and water level measurements to be

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