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~4 • (Page 2) • MINE ID # OR PROSPECTING ID # M-80-244 INSPECTION DATE 07/12/95 INSPECTOR'S INITIALS RCO OBSERVATIONS This inspection was performed by the Division because of the high priority nature of this operation, and the ongoing activity regarding the heap leach development. The operator was present during part of the inspection. The only areas and activities observed were the elope preparations on the east aide of the north "knob^ and the deployment and anchoring of the VLDPE liner on the north knob. The exposed portions of the liner northwest of Arequa Gulch were certified, but the portion of the ewale, though installed, was awaiting certification. These two areas were clearly marked. Deployment has reached the anchor trench all around the perimeter of the liner, except for the north knob. The trench was being filled and compacted from the south to the north. A backhoe is digging the trench, working northward, and is almost to the top of the knob next to the haulroad. Below the limits of liner certification in the gulch bottom, there has been 4 or more feet of fill placed. The liner seaming activity observed was only fusion welding north of the ewale, some patchwork activity in the bottom of the gulch, and pressure testing the fusion weldeat each panel. About six testa were observed, with each one showing no more than 3 psi drop during the teat time. Preparation of the earth slope on the east side of the knob consisted of packing by a wheeled roller, several passes over the area by rock-picking crews, then spreading the "flour." A final rolling occurred, sometimes followed by a water application (either by truck or manually by firehose) if the compacted clay was too dry before membrane deployment. The water truck avoided travelling over the steep or wet slopes. The fine (flour) material is wet today, and the extra cloddy texture hides many rocks; this required extra rock picking. The VLDPE was being unrolled downhill, and during the calm periods, deployed with few wrinkles. Soon after 1:30 pm, several gusts from the south lifted panels #168, 169 and 170, at their 3-way junction in the swale. Wind also lifted portions of the lower uneeamed edge of panel #173. The liner pieces were not significantly displaced; all wrinkles were manually pulled out and overlapping for seams restored. At 1:55 pm, more gusts made deployment of panel #174 difficult. The operation was briefly halted, then begun when the gusts calmed down. Farther to the south of the knob, on the southeast side of the ewale, the liner material appears to have slumped slightly, which tended to magnify the normal amount and size of the wrinkles. A couple of portions of the wrinkles, extending lengths of up to 100 feet, were over afoot tall. The liner was, in places, laying over on itself. These aeries of wrinkles was pointed out to the operator and to Golder, to remedy before covering with fill. There was no visible sign of erosion or movement of material due to rain or excess moisture. All items observed were discussed oneite with the operator and the contractors. There were no problems noted during the inspection. I 6 E Contact Address NAME John Hardaway OPERATOR Crioole Creek and Victor Gold STREET PO Box 191 CITY/STATE/ZIP Victor CO 80860 cc: Jim Stevens/DMG ^ CE ^ BL ^ FS ^ HW ^ HMWMD (CH) ^ SE ^ WQCD (CH) ^ OTHER