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Bureau of Land Management Appendices <br /> Royal Gorge Field Office DOI-BLM-CO-F020-2020-0036 EA <br /> installation and equipment. <br /> upgrades, as <br /> applicable) <br /> There is no surface flow in any of these <br /> drainageways except immediately after heavy <br /> rains. An existing sediment pond which receives <br /> runoff after heavy precipitation events is located <br /> adjacent to the access road, approximately 300 <br /> feet below the entrance to the mine. <br /> SW Drainage- There are several unnamed <br /> ephemeral drainages on the site(ref.maps). The <br /> southwesterly drainage is immediately below the <br /> existing mine and operation's pad;the drainage <br /> h. Proximity to from the existing pit and from an unaffected - <br /> waterways branch both discharge to this basin. The entire Y N N <br /> length of this drainage is only 300' long in total. <br /> NW Drainage(form topsoil location)- 700 ft <br /> north of the mine pit(and 300 ft NW of the <br /> proposed overburden stockpile area);the top of <br /> the drainage basin is 3,000' to the NW of the <br /> closest point in proximity to the overburden pile. <br /> SE Drainage-A very minor drainage flows to <br /> the southeast from a high point on the southeast <br /> side of the operation; however,there has been no <br /> mining disturbance there which would have <br /> impacted this basin, and none is planned. <br /> A-5 <br />