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4. Post-Reclamation Site Draina¢e <br />Maps C-2 and F show arrows indicating the approximate direction of drainage throughout the pit. <br />Almost the entire permit area will drain to the northeast towazds the old Metcalf Pit. This is similar to <br />the original path that water on the surface follows. A very small portion of the water will drain <br />towards the southeast corner where the natural berm was removed and the pit is daylighted to <br />Mexican Gulch and another small portion to the north towards the north end of the George property, <br />where it will settle into the ground. <br />5. Weed Control <br />Haldorson and Sons, Inc. will take measures to ensure that the reclaimed land is free of weed <br />infestations. Problem weeds will be monitored closely each spring until the bond is released to <br />determine if they are invading the area. Weed control will be initiated if the problem becomes <br />serious. Potential noxious weeds in the area identified by Montrose County include: Yellow <br />Starhistle, Spotted Knapweed, Diffuse Knapweed, Leafy Spurge, Yellow Toadflax, and Jointed <br />Goatgrass. There are no known infestations at this time. The Division and the NRCS will be <br />consulted regarding any weed infestation area and any control measures prior to their initiation. It may <br />be necessary to control weeds by mowing after the first year; the feasibility of chemical weed control <br />methods will be studied should it be necessary. The plan does not contemplate total weed removal on <br />the property. Past experience shows that some initial weed cover in the first year following <br />retopsoiling is beneficial to the reclamation effort in non-irrigated areas such as the slopes. Weeds <br />tend to provide shade for new grasses, are a means of holding snow on the seedbed longer and protect <br />it from wind and water erosion until the planted species have taken hold. <br />6. Revegetation Success Criteria <br />It is suggested that the dry range revegetation in should be deemed successful when the live perennial <br />cover is adequate to control erosion and no less than 90% of the pre-mine vegetation in similaz <br />surrounding areas. <br />Haldorson Sand and Gravel Mine 24 <br />