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Opening ID 423 <br />Type of Feature Shaft <br />Excavated Dimension <br />8.00 X 10.00 Ft <br />Eroded Dimension <br />25.00 X 25.00 Ft <br />Present Dimension <br />8.00 X 10.00 Ft <br />Depth <br />200 <br />Shape of Opening <br />Rectangular <br />Surficial Material <br />Mine dump <br />Depth to Bedrock <br />6 <br />Drainage <br />None <br />Existing Access Deterrents <br />None <br />Preferred Closure Method <br />Backfill <br />Backfill by placing existing on -site materials back into the opening <br />riprap is required. Install monument to specifications. <br />Opening ID 424 <br />Type of Feature Shaft <br />Excavated Dimension <br />5.00 X 12.00 Ft <br />Eroded Dimension <br />18.00 X 18.00 Ft <br />Present Dimension <br />5.00 X 12.00 Ft <br />Depth <br />286 <br />Shape of Opening <br />Rectangular <br />Surficial Material <br />Mine dump <br />Depth to Bedrock <br />6 ft <br />Drainage <br />None <br />Existing Access Deterrents <br />None!!! <br />Preferred Closure Method <br />Panels <br />No <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 />Opening ID 425 <br />Type of Feature Shaft <br />Excavated Dimension <br />3.00 X 6.00 Ft <br />Eroded Dimension <br />5.00 X 10.00 Ft <br />Present Dimension <br />3.00 X 6.00 Ft <br />Depth <br />300' <br />Shape of Opening <br />Rectangular <br />Surficial Material <br />Mine dump <br />Depth to Bedrock <br />10' <br />Drainage <br />None <br />Existing Access Deterrents <br />None <br />Preferred Closure Method <br />Panels <br />Install 1 B -1 (6' X 12') panel, 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 />1'7 <br />