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MINE ID # OR PROSPECTING ID#: M-1977-493 PAGE: 4 INSPECTION DATE: 9-8-03 INSPECTOR'S INITIALS: ACS through the base of the dam to the old Robinson Pump Station. Climax is concerned that when the lake is full, the entire head of the reservoir is being applied to a single valve in the old pump house. By exposing and inspecting the head gate of the pipeline Climax can determine how to best assure containment of Robinson Lake water at the pipeline. As Robinson Lake is an EPF, DMG requests that Climax report their findings and describe the nature of any mitigation that may be required. The Robinson ground water cutoff was inspected. This EPF was installed to prevent contaminated seepage from Robinson Lake from flowing along ground water pathways and possibly entering Eagle Park Reservoir. The flow is cutoff by a concrete wall that is keyed into bedrock and the collected ground water is pumped back to Warren's Pump Station. This is simple in concept but has proven complicated in execution. The ground water cutoff wall itself has proven highly effective since its installation. However, Climax has encountered difficulties in the operation and maintenance of the pumping circuit. At the time of this inspection, the pumping, water collection, and water storage systems have been re-designed and rebuilt and the system is efficient and virtually trouble free. At certain key EPFs that require periodic inspection, Climax has placed inspection checklists and bar codes. Climax personnel scan the codes at the time of inspection to streamline tracking and to assure that all necessary inspections are conducted. The area above the upstream end of Robinson Lake was inspected. Infestations of yellow toadflax (linaria vulgaris) and oxeye daisy (chrysanthemum leucanthemum) in this location were described in the report of the DMG's 9-17-98 inspection. In the mill office prior to this inspection, the Climax weed control program was discussed and documents related to the control program were reviewed. Contractors retained by Climax have identified and mapped the location of all weed species on Climax property, and the weeds are sprayed with herbicide annually. Yellow toadflax and oxeye daisy continue to be present in the area above Eagle Park Reservoir despite the herbicide applications; this is largely due to the continued presence of weed vectors into Climax property from outside areas. For example, grazing sheep are transported through Climax property from the lower Eagle River Valley. There is also a public road that follows the Eagle River onto Climax Property. These vectors bring seed from infestations at Camp Hale and elsewhere downstream onto the Climax property. It was determined through this inspection that Climax is adequately managing the weeds in Eagle Park; certainly the problem has not increased since the 9-17-98 inspection, and for that reason the DMG has no cause to assert regulatory authority over weed management at this time.