2011-05-18_PERMIT FILE - C1981012A ‎(2)‎

• Permit No: C1981012A
• IBM Index Class Name: Permit File
• Doc Date: 5/18/2011
• Doc Name: SUBSIDENCE CONTROL, MONITORING, AND MITIGATION PLAN
• Section_Exhibit Name: Exhibit 24 Subsidence Control, Monitoring, and Mitigation Plan
• Media Type: D
• Archive: Yes

May 11, 2011
Table 2. Classification Summary of Surface Structures 1,2
Page 5
Angular Radius of
Structure Class Structure Horizontal Strain Slope (10) Distortion (]0 3 Curvature
(millistrain) ) ( -i)
Gas Pipe: Buried in Sandy Soil Gas Line 2
Gas Valve
Fuel Gas Valve
Gas Pipe: Ancilliary Structures Gas Line Drip 2
Gas Blow -Off Valve
Water Pipe: Buried in Sandy Water Line 5
Water Pipe: Ancillary Structures
Water Discharge Point 5
bearing walls /Low rise structures 1.5 -2 (Functional)
Water Valve
Surface Water Body
Water Disposal Pit (Lined)
5
Frame House
Water Disposal Pit (Unlined)
TV /Radio Transmission Towers
Solar Panel
Timber Frame Buildings Green House 1 (Architectural)
7
(< 50 m)
Scada Tower /Antenna
Wellhead Equipment
Pump Jack
Log Frame Cabin
Compressors /Pumps
Structures on Metal Skids /
Soundproof Metal Housings for
Footings
Compressors /Pumps /Separators /Transformers
Produced Water Tank
Methanol Tank
Compressors /Pumps
Structures on Concrete Skids / Soundproof Metal Housings for
Footings Compressors /Pumps /Separators /Transformers
Structures on Ground - Embedded Wellhead Soundproof Walls
Metal Columns Electrical Panel /Meter 5*
Electrical Outlet (Power for Well)
Roads Unpaved Roads 1-3 5 (Functional)
Paved Roads 10 (Structural)
Brick and Masonry/ Brick- Church I (Architectural)
1 (Architectural)
bearing walls /Low rise structures 1.5 -2 (Functional)
2.5 -3 (Functional) 12 (Functional)
School 3 (Structural)
7 (Structural)
Frame House
Shed/Pens
Timber Frame Buildings Green House 1 (Architectural)
3.3 -5 1.5 (Architectural)
Garage
(Functional)
Barn
Log Frame Cabin
I Society of Mining, Metallurgy, and Exploration, Inc. (1992), SME Mining Engineering Handbook, Vol 1. Ed. H. L. Hartman, 2,260 p.
2 Peng S. S. (1992), Surface Subsidence Engineering, Braun - Brumfield, huc., Ann Arbor, Ml, 161 p.
*Hypothesized level of allowable horizontal strain
4.1.1 Gas Well Subsidence Control Plan
No development mining will take place within 150 ft of the seam -level projection of the
surface well location. This should protect against 1) accidental underground breech of the well,
2) protective pillar failure, and 3) well damage.
4.1.2 Gas Well Monitoring Plan
To ensure that the gas well subsidence control plan is effective, AAI recommends the
following monitoring plan:
Well owner(s) should be informed as mining approaches and data generated during
monitoring should be shared with them.
Agapito Associates, Inc.