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5. The operator will contribute ten cents/ton to the Grandview Ridge mitigation fund. These <br />funds will be used to manage resources in the Grandview Ridge parcel. If cultural <br />resources are found, and mitigation costs exceed the amount in the mitigation fund, the <br />operator is responsible for all additional costs, including payment for all of BLM's costs <br />for monitoring of the mitigation work. <br />Invasive, Non-Native Species <br />6. The Operator is responsible for reclamation of all surface disturbances on public lands <br />that is related to activities conducted under previous contracts issued to C & J Gravel. <br />Interim and final reclamation must be initiated at the earliest economically and <br />technically feasible time. Interim reclamation will be initiated when an area will not be <br />used for a minimum of three years. Interim reclamation will consist of maintaining <br />surfaces in a stable condition which will not erode. Surfaces will be vegetated with a <br />seed mix that is approved by the BLM. Final reclamation will be implemented when an <br />area will clearly not be used for operations in the future. Final reclamation will consist of <br />recontouring disturbed surfaces to natural contours and re-vegetating with a BLM- <br />approved native seed mixture. The operator would repeat seeding as needed to meet <br />BLM vegetation standards. Revegetation would be considered to be complete when a <br />permanent, reproducing plant community has been established that meets long-term use <br />goals. <br />7. Disturbed areas will be monitored annually for invasive, non-native species. <br />8. All vehicles and heavy machinery will be cleaned to remove seed and soil prior to and <br />after clearing vegetated surface areas. <br />The operator will spray for noxious weeds twice annually. Because musk thistle is listed <br />as a priority and enforceable weed by La Plata County, all musk thistle populations less <br />than one acre in size will be designated for eradication. Larger populations (>1 acre) will <br />be designated for incremental management. All noxious and invasive species which <br />occur on site will be eradicated using materials and methods approved in advance by the <br />BLM. <br />Migratory Birds <br />10., Vegetation-clearing activities will not occur from May 15 through July 15, annually, to <br />avoid direct impacts to nesting pinon jays. If vegetation clearing cannot avoid this 60- <br />day period, surveys for pinon jay nesting activity will be conducted by a qualified <br />biologist prior to any vegetation clearing activities. If the project area does not contain <br />any nesting pinon jays, vegetation clearing activities may be authorized by the <br />Authorized Officer for the remainder of the closure period. <br />Hazardous or Solid Waste <br />11. Any wastes, including asphalt, will be disposed of in an appropriate off-site waste <br />facility. <br />Montoya Gravel Pit Expansion Environmental Assessment 2