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Opening ID 359 <br />Type of Feature Shaft <br />Excavated Dimension <br />6.00 X 8.00 Ft <br />Eroded Dimension <br />20.00 X 20.00 Ft <br />Present Dimension <br />6.00 X 8.00 Ft <br />Depth <br />Unknown <br />Shape of Opening <br />Rectangular <br />Surficial Material <br />Mine dump <br />Depth to Bedrock <br />6 feet <br />Drainage <br />None <br />Existing Access Deterrents <br />None <br />Preferred Closure Method <br />Backfill <br />Backfill by filling the opening with available on -site common fill. Install <br />monument to specifications. No riprap is required. <br />Opening ID 360 <br />Type of Feature Shaft <br />Excavated Dimension <br />7.00 X 10.00 Ft <br />Eroded Dimension <br />30.00 X 30.00 Ft <br />Present Dimension <br />7.00 X 10.00 Ft <br />Depth <br />150 feet <br />Shape of opening <br />Rectangular <br />Surficial Material <br />Colluvium /dump <br />Depth to Bedrock <br />10 feet <br />Drainage <br />None <br />Existing Access Deterrents <br />None <br />Preferred Closure Method <br />Panels <br />Install two (2) B -1 (6' X 12') panels, and one (1) B -1 (6' X 12') panel with a <br />locking grated access door, according to the Precast Concrete Closure <br />specifications. <br />7 <br />