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(Page 3) <br /> MINE ID # OR PROSPECTING ID # M-77-378 <br /> INSPECTION DATE 7/16/96 INSPECTOR'S INITIALS WHE <br /> dump for final reclamation purposes. Surface of the mine waste dump showed evidence of seeding and mulch. Vegetation was <br /> sparse and weedy. Alkaline injection equipment was near operational. Lime hoppers, mixing vat,pumps and lines appeared intact. <br /> Main pump was test run during the time of this inspection. Surface drainage from area where alkaline material is handled and <br /> processed, reports to the water treatment ponds. Discharge from the water treatment ponds to Eureka Gulch is monitored per the <br /> requirements of COPS Permit No. CO-0036056. Operator stated that bulkhead valves for the American Tunnel would not be closed <br /> until pH readings of the American Tunnel discharge indicated that pH of the mine pool was responding to alkaline injection from the <br /> Terry Tunnel. <br /> Sunnyside Basin-Secondary Location of Alkaline Injection -Equipment for alkaline injection was not located at the Sunnyside Basin <br /> area. Operator indicated that the Terry Tunnel was the present location for alkaline injection due to available water source at the <br /> Terry Tunnel. Spill containment for the Sunnyside Basin alkaline injection will be provided by the natural containment offered by <br /> Lake Emma basin. If alkaline materials were spilt within the Lake Emma basin, alkaline material would seep into the mine workings <br /> through the backfilled collapsed shaft underlying Lake Emma basin. Open portal was observed upslope of the Lake Emma basin, <br /> which provides direct access to mine workings for pumping alkaline waters. <br /> Sunnyside Basin - Lake Emma subsidence feature was evident. Operator stated that additional backfill material is periodically <br /> required as snow and ice, contained within the collapsed shaft, melts. Operator indicated that backfilling of the collapsed shaft is <br /> near completion. Upland diversion structures, routing drainage around the subsidence area, were evident. <br /> Sunnyside Basin - Washington Open Pit - The 20' highwall has been stabilized by constructing a bench at the 10' level. Talus <br /> material from the slope above the highwall was not observed on the snow drift remaining against the highwall. Absence of talus <br /> material below the highwall indicates that surface mining may not have affected the stability of the talus slope. Vegetative cover <br /> for the pit floor was evident but sparse and partially concealed by remaining snow pack. <br /> Sunnyside Basin -Sunnyside Open Pit -The 30' highwall has been stabilized by constructing 3 benches at 10'intervals. Several <br /> historic entries,located within and adjacent to the highwall have been backfilled. Backfilled entries appeared stable and completely <br /> closed. Highwall appeared'stable. Vegetative cover on pit floor was evident but sparse and partially concealed by remaining snow <br /> pack. <br /> MINE REMEDIATION PROJECTS - Primary A List required of the Consent Decree & Order. <br /> Sunnyside Mine Pool - addressed above. <br /> Mine Waste Dump, South Fork Cement Creek - addressed above. <br /> Boulder Creek Mill Tailings -Located adjacent to the Animas River, near the existing Mayflower Mill. Operator intents to relocate <br /> approximately 1300 cy of tailings to Mayflower Tailings Pond 4, regrade area to blend with surrounding topography, provide <br /> sediment control and revegetate. Field remediation work for the Boulder Creek Tailings Pond had not commenced. <br /> Surface Mill Tailings at Eureka - Located adjacent to the Animas River, at the abandoned townsite of Eureka. Operator intends to <br /> relocate approximately 65,500 cy of tailings to Mayflower Tailings Pond 4,regrade area to blend with surrounding topography and <br /> provide sediment control during operations. Silt fence and straw bales were observed along the west bank of the Animas River to <br /> treat drainage from the excavation operation for sediment. Excavation operation had not commenced. <br /> Gold Prince Mill Tailings and Closure Bulkhead-Located at the head of Placer Gulch. Operator intends to construct water retaining <br /> bulkhead to seal#1 level of Gold Prince Mine and relocate approximately 2050 cy of tailings and waste rock to appropriate disposal <br /> location on site or relocate tailings and waste rock to Mayflower Tailings Pond 4. Relocated material will be consolidated, <br /> neutralized,graded to 2H:1 V slope,capped with available soil material(preferably 14-16"depth) and revegetated. Permanent upland <br /> diversions will be constructed to minimize surface drainage contact with relocated material. Existing structures of historical <br /> significance will be retained. Operator had commenced preparations for construction of water retaining bulkhead. No other field <br /> work for the Gold Prince remediation plan were observed. <br /> Longfellow Koehler Portal and Mine Waste Dump-Located at the headwaters of North Fork Mineral Creek, south of the summit of <br /> Red Mountain Pass,on the east side of Highway 550. Operator intends to relocate and/or isolate from portal discharge and surface <br /> drainage, consolidate and neutralize, approximately 20,000 cy of mine waste material. If suitable isolation site cannot be located <br /> onsite, operator will relocate mine waste material to Mayflower Tailings Pond 4. Isolated and consolidated material will be capped <br /> with 14-16" soil, as available, and revegetated. Existing structures associated with the Koehler shaft will be removed. Existing <br /> structures associated with the Longfellow shaft have been designated as historically significant and will be retained. Sludge from <br /> the low pH pond will be relocated to Mayflower Tailings Pond 4. Operator will provide to WQCD, design for passive bio treatment <br />