2013-04-03_PERMIT FILE - X201322801 ‎(2)‎

• Permit No: X201322801
• IBM Index Class Name: PERMIT FILE
• Doc Date: 4/3/2013
• Doc Name: Letter & Application
• From: Ark Land Company
• To: DRMS
• Email Name: JDM
• Email Name: DIH
• Media Type: D
• Archive: No

Drill Hole Abandonment Methods
The hole plugging method described in 43 CFR II 3484.1(a) or Colorado Division of
Reclamation, Mining and Safety (CDRMS) Rules at 4.07.3, states that each open hole will be
plugged with cement from bottom to 50 feet above the uppermost thick coal seam and from 50
feet below to 50 feet above any aquifers encountered in the hole. The remainder of the hole is to
be filled with an approved completion mud, gel, cuttings, or cement to within 10 feet of the
surface. A 10 foot cement surface plug would be set, and an appropriately labeled monument
marker to be cemented into the surface plug. Surface casing is to be cut off at or below the level
of the soil surface. ALC may elect to fill the hole in its entirety with cement. See Figure 2.
Reclamation Plan
For all drill holes final reclamation activities will follow the completion the hole as closely as
possible.
1. Upon completion of all drilling activities at a given site, all debris, trash, and drilling related
equipment will be removed from the site. When the mud pit is sufficiently dry, it will be
filled with stored subsoil material and compacted to minimize any settling. All remaining
subsoil will be redistributed on and around the drill pad with a backhoe and /or bulldozer to
achieve as closely as possible, the original contour of the site.
2. The following alternative sediment control measures will be used for drill pads: slash, silt
fence, erosion control blankets, or straw wattles. SEDCAD analyses for typical drill sites of
the following sizes: 0.25, 0.5, 1.0, and 2.0 acres were completed for the PR -14 revision
application and approved in October 2008. The analysis is attached as Attachment 4. These
SEDCAD analyses demonstrate that the alternative sediment control measures meet the
requirements of DRMS Rules 4.05.2(3) and 4.05.5. Also Attachment 4 contains slope
stability analysis for drillpad mudpits that demonstrates the mudpits will meet the minimum
1.3 safety factor requirement of DRMS Rule 4.05.9(8)(b).
3. Stored topsoil will be distributed as evenly as possible over the disturbed pad area.
4. The entire drill pad area will be re- seeded using the following seed mix, which has been
approved by the USFS for drill sites in this area.
PAONIA RANGER DISTRICT SEED MIX
Habitat Type Grass Species Mix Seeds /lb.
P/J Woodland Gaileta 159,000
Western Wheatgrass 126,000
Great Basin Wildrye 100,000
Indian Ricegrass 141,000
Cicer Milkvetch 145,000
Mountain Shrub
Aspen/Spruce /Fir
Mountain Brome 90,000
Prairie Junegrass 2,315,400
Western Wheatgrass 126,000
Indian Ricegrass 188,000
Cicer Milkvetch 145,000
Slender Wheatgrass
Mountain Brome
Canby Bluegrass
Idaho Fescue
11
160,000
90,000
926,000
450,000
Lbs. /Acre
5lbs /A
51bs /A
5lbs /A
51bs /A
l lb /A
211bs /A
5Ibs /A
4lbs /A
6Ibs /A
4lbs /A
11b /A
201bs /A
3lbs /A
6lbs /A
3lbs /A
2lbs /A
141bs /A