1997-12-01_REVISION - M1977378 - Laserfiche WebLink

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K Page 2 Bond and Acreage Reduction Submittal LAKE EMMA /SUNNYSIDE BASIN Proposed acreage changes: ( see attached land map for detail) Existing Permit Acreage 215.33 Permit Area Reduction Proposed 148.83 Proposed Permit Area 66.50 Most of the permit area reduction involves undisturbed land. The exception being the borrow area slopes on Bonita Peak and the reclaimed roadway northeast of the Lake Emma hole. Activity: This site was included under the Permit in AM-002 (1987). Inclusion under the permit was deemed necessary due to the surface disturbance created by the pre- Sunnyside (1978) collapse of Lake Emma into the underground mine workings and SGC's desire to mine remaining ore in this area. Prior to the collapse, all disturbances in this area were historic and pre-law. Gravel extraction for use as road base material was permitted under TR-02 (1987). The source was in the"Washington Vein" area later disturbed further as part of the Washington pit and Washington Vein underground mining projects. In 1988, open pit mining on vein surface outcrops was included under the permit (AM-003). This amendment was written to cover all of the Sunnyside Basin area. Actual activity only occurred on two small outcrop areas, the"Washington Vein" pit and the"Sunnyside Vein" pit. In 1989, several near surface ore blocks were permitted for mining from underground with access by portaling in from surface in Sunnyside Basin (TR-07). These access portals were on the"Washington Vein", "Sunnyside Vein", and "No- Name Vein". The"No-Name Vein" underground mining utilized an existing portal. The portals were the only surface disturbances resulting from this project. Reclamation: The surface portals created for the underground mining project were backfilled and the old wagon road used for access to the No-Name portal was reclaimed and planted.