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Section II - Revisions to the Permit <br /> Permit Revision Summary <br /> No permit revisions were submitted since the 1988 permit renewal . <br /> Technical Revision Summary <br /> No. Topic Decision Date <br /> TR-06 Reduce Subsidence Monitoring Frequency Approved 01 /28/89 <br /> TR-07 West Ridge Waste Pile Repair Approved 09/05/89 <br /> TR-08 Reduction in Hydrology Monitoring Withdrawn 11 /09/89 <br /> TR-09 East Mine Drainage Designs Approved 09/13/89 <br /> TR-10 Road to OVWM Vent Shaft and Water Tank Approved 04/08/91 <br /> TR-11 West Ridge Waste Pile Drainage Withdrawn 06/07/91 <br /> TR-12 Modify Mine Plan under BLM Renewable Resource Approved 11 /25/91 <br /> Lands <br /> TR-13 Add 9.6 Acres to AVF at Loadout Approved 07/11 /91 <br /> TR-14 Drainage Control Plan Approved 02/02/92 <br /> TR-15 Additional Fan at OVWM Approved 08/06/91 <br /> TR-16 Reduce Subsidence Monitoring Approved 02/11 /92 <br /> Minor Revision Summary <br /> No. Topic Decision Date <br /> MR-58 Underground Chute to Beltline Approved 09/09/88 <br /> MR-59 Temporary Coal Stockpile Construction Approved 09/20/88 <br /> MR-60 Withdrawn (Addressed in TR-07) Withdrawn 09/27/88 <br /> MR-61 Stoker Coal Stockpile Bench Expansion Approved 03/02/89 <br /> MR-62 West Portal Cut Repair Approved 06/09/89 <br /> MR-63 Weed Control Plan Approved 07/22/89 <br /> MR-64 Belt Magnet Relocation Approved 08/10/89 <br /> MR-65 Topsoil Stockpile and Ditch Relocation Approved 05/07/90 <br /> MR-66 Timber Storage Area Conversion to Coal Stockpile Approved 05/27/90 <br /> MR-67 Loadout Permit Boundary Verification Approved 06/25/90 <br /> MR-68 Herbicide Application and Reporting Procedures Approved 06/06/90 <br /> MR-69 Use East Ridge Subsoil for West Ridge Wastepile Approved 07/10/90 <br /> MR-70 Use Existing Concrete Structure for Waste Storage Approved 07/10/90 <br /> MR-71 Add A+ Panel to Mine Plan Approved 01 /23/91 <br /> MR-72 Temporary Drainage Ditch from Topsoil Piles to Approved 10/11 /90 <br /> Pond No. 3 <br /> MR-73 Soil Pile Near West Ridge Waste Pile Approved 01 /30/91 <br /> MR-74 Move Dust Bin Approved 02/08/91 <br /> MR-75 Modify Mine Plan - Panel A Approved 03/05/91 <br /> MR-76 Concrete Pad at OVWM Bench Approved 05/24/91 <br /> MR-77 Grosse-Rhode Livestock Trail Approved 11 /07/91 <br /> -4- <br />