Attachment_2_Data_Sheet.pdf

Bureau of Land Management, High Plains District, Wyoming Buffalo Field Office 2022

LX Bar CBNG Infrastructure Removal and Reservoir Reclamation 2022

WORK DATA SHEET / INFORMATION EXHIBIT 1

WORK DATA SHEET / INFORMATION EXHIBIT

LX Bar Coal Bed Natural Gas (CBNG) Infrastructure Removal and Reservoir Reclamation

Project General Reclamation Plan and Description

The following general reclamation plan applies to all infrastructure.

Brush-hog, if necessary to reduce fire danger prior to performing work.

1. Remove all well production infrastructure to no less than 3 feet below ground surface. This includes, but not limited to water and gas piping and electrical conduits. It is not the intent to remove the entire horizontal infrastructure, regardless of actual depth. All existing pipes and conduits should be considered active until the Contractor has taken appropriate steps based on standard oil field practices to validate, they are safe to cut and cap below grade.

2. All above ground utilities, e.g., air release valves, drip vents, electric stub outs and poly pipe stub outs, shall be removed from the surface, cut and capped a minimum of three (3) feet below the finished ground surface. All disturbed areas shall be graded to blend and match the surrounding landform areas and shall promote positive drainage. Topsoil shall then be redistributed, and the sites are revegetated utilizing specified seed mix.

3. Remove and dispose all trash and debris from the work site each day to a secure facility off-site.

4. All salvageable production equipment shall be transported to a landowner approved site located off Greenough (Campbell County) Road SW1/4, SW1/4, Sec 19, T56N, R74W, Campbell County Wyoming. Lat.44.8126, Long. -105.8150

5. Topsoil shall be stripped to a depth of 6-inches prior to any surface disturbing activities.

A minimum of 6-inches of topsoil shall be salvaged where excavation is necessary. All project areas surface disturbances shall be graded to blend and match into existing finished ground surface landform. After backfilling and grading is complete, topsoil shall be evenly redistributed across the surface disturbance area, prepped for seeding, crimped with straw mulch, and seeded with the seed mix listed. Seed and straw mulch shall be from a weed free certified source. Distribute straw mulch at a minimum rate of ½-ton per acre. Drill seed at a depth not to exceed 0.5-inch. If broadcast seeding, double the rate of application.

6. After topsoil has been re-spread across the disturbed areas (after earth work is completed), the soil shall be prepared for seed bed, crimped with straw mulch, and seeded with the seed mix listed on following page or as listed in the specifications. Seed and straw mulch shall be from a weed free certified source. Distribute straw mulch at a minimum rate of ½-ton per acre. Drill seed at a depth not to exceed 0.5-inch. If broadcast seeding, double the rate of application.

7. No depressions may be left where water could pond, with the following exceptions: areas adjoining the reclaimed sites that have depressions not created by the contractor’s actions, micro-depressions created to support reclamation success, terminal storm water containments designed to silt-in overtime and other small storm water/snow storage basins. The intent is to promote positive drainage in the area and restore positive drainage in the disturbed areas.

8. Seed shall be drilled on the contour with a seed drill equipped with a depth regulator to ensure uniform depths of planting. Seeding depth shall be maintained between ¼ to ½ inch deep.

WORK DATA SHEET / INFORMATION EXHIBIT 2

Surface owner seed mix Dryland Pasture Mix Seed Mix

Species

% in Mix

Lbs PLS*

Brome Grass Smooth

13.92

1.71

Slender Wheatgrass 13.92 1.71

Intermediate Wheatgrass 13.92 1.71

Slender Wheatgrass 13.92 1.71

Pubescent Wheatgrass 13.92 1.71

Western Wheatgrass 13.92 1.71

Green Needle 13.92 1.71

Four-wing Saltbush 2.50 0.30

Totals

100% 12 lbs/acre

*PLS = pure live seed *Northern Plains adapted species

Description 1.Bottom 26/Water Gap Reservoir Spillway (Extending from the lowest reservoir that is being kept to the beginning of the middle reservoir that is being removed.)

• 990 feet in length (24,789 SF/43,560 = 0.57acres) o General profile of the spillway is 25 feet fill slope/fore slope at approximately 3:1 layback with an 8-foot crown with and 8 feet layback into the spillway at approximately 2:1-3:1 slope with approximately 8 feet ditch base with and even cut slope with approximately 3:1 layback.

• 79,200 CF/27= 2,933 cubic yards for the fill slope + crown 2,347 for total= 5,280 cubic yards

The entirety of the spillway appears to balance with the amount of material in fore slope and should balance and roll into the cut slope and layback to 3:1 or less.

WORK DATA SHEET / INFORMATION EXHIBIT 3

• From the termination point of Lower 26 Reservoir to the Bottom 26/Water gap Reservoir going west from the termination is 190 feet (7,350SFSF/43560 = 0.17 acres) of significant erosion from the base of spillway ditch (3-5 feet). Utilize the material from the ditch fill slope, if there is not adequate sediment from Bottom 26/Water Gap reservoir can also be utilized.

WORK DATA SHEET / INFORMATION EXHIBIT 4

View looking west from start of erosion of Bottom 26/Water Gap Reservoir

WORK DATA SHEET / INFORMATION EXHIBIT 5

View looking east from start of erosion of Bottom 26/Water Gap Reservoir

WORK DATA SHEET / INFORMATION EXHIBIT 6

View looking west from end erosion of Bottom 26/Water Gap Reservoir along spillway ditch

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View looking east from Upper 26 Reservoir along spillway ditch

WORK DATA SHEET / INFORMATION EXHIBIT 8

View looking northwest along spillway towards Upper 26 Reservoir where spillway meets iso-fill point and terminates

WORK DATA SHEET / INFORMATION EXHIBIT 9

2. Lower 26 Reservoir (lowest of the three reservoirs to be reclaimed in the channel)

• In channel reservoir.

• Dam is approximately 265 feet in length.

o 106,000 CF/27= 3,926 CY+2,944+2,944 Total Cubic Yards= 9,814 cubic yards

(CY)

• Dam Crown=20ftX20ft tall.

• Slope=triangle 20ft tallx45ft hypotnusex30ft base x2.

• Improvised dam on the north side of the Lower 26 reservoir built into the spillway.

Upon reclamation of the spillway the dam will be removed.

• Pool area acreage 72,420 SF/43560=1.66 acres

• Dam area acreage 28,717 SF/43560=0.66 acres

WORK DATA SHEET / INFORMATION EXHIBIT 10

View looking east from the crest of the Lower 26 Dam towards the siphon tube

WORK DATA SHEET / INFORMATION EXHIBIT 11

View looking northeast from the southeast end of the dam towards the spillway ditch that runs east to west

WORK DATA SHEET / INFORMATION EXHIBIT 12

View looking north from the south end of the beginning of the dam on the spillway

WORK DATA SHEET / INFORMATION EXHIBIT 13

View looking east from the west side of the improvised dam

WORK DATA SHEET / INFORMATION EXHIBIT 14

View looking west from Bottom 26 Reservoir towards the dam of Lower 26 Reservoir

WORK DATA SHEET / INFORMATION EXHIBIT 15

View looking northwest from the base of dam of Middle 26 Reservoir towards Upper 26 Reservoir

WORK DATA SHEET / INFORMATION EXHIBIT 16

View looking northeast from outfall

WORK DATA SHEET / INFORMATION EXHIBIT 17

View looking northeast from outfall

WORK DATA SHEET / INFORMATION EXHIBIT 18

Lower 26 Reservoir Siphon Box

WORK DATA SHEET / INFORMATION EXHIBIT 19

3. Middle 26 Reservoir (Considered off-channel)

• Off channel reservoir.

• Dam is approximately 575 feet in length and is horseshoe in shape (broke this into 3 segments for calculations).

o Leg A: 18x10x160=28,800 CF/1,069 CY crown/outside slope 200x160=32,000

CF/1,185 CY dam slope=262x160=41,920 CF/1,552 CY = 3,806 cubic yards o Leg B:17x20x275=93,500/3,462.96 CY crown/outside slope

68x17/2=578x275=158,950/5,887 CY/dam slope 12x38.5/2=228.9x275=62,947.5/2,331.38 CY= 11,681.34 cubic yards o Leg C:20x10x140=1,037 CY crown/outside slope 2,900 CY/Dam slope 1003.3 CY=4,940.3 cubic yards Total Cubic Yards=20,427.64

• Over Head Power (OHP) bisects the dam laterally from the SE corner to the NW corner

• Crown= Varies on the three different segments due to topography.

• Slope varies on the three different segments due to topography=triangle 20ft tallx45ft hypotnusex30ft base x2.

• Pool area acreage 73,266 SF/43560=1.68 acres

• Dam area acreage 51,366 SF/43560=1.18 acres

WORK DATA SHEET / INFORMATION EXHIBIT 20

View looking east from the west side Middle 26 Reservoir

WORK DATA SHEET / INFORMATION EXHIBIT 21

View looking southwest from the east side dam of Middle 26 Reservoir towards outfall and tire tank

WORK DATA SHEET / INFORMATION EXHIBIT 22

View looking southwest from the east side dam of Middle 26 Reservoir towards outfall tubing

WORK DATA SHEET / INFORMATION EXHIBIT 23

View looking south from bottom of the outfall of Middle 26 Reservoir

WORK DATA SHEET / INFORMATION EXHIBIT 24

View looking east from the east side bottom of the dam of Middle 26 Reservoir at the siphon tube and valve

WORK DATA SHEET / INFORMATION EXHIBIT 25

View looking northwest from the east side dam of Middle 26 Reservoir towards the dam of the Upper 26 Reservoir

WORK DATA SHEET / INFORMATION EXHIBIT 26

View looking northeast from the east side dam of Middle 26 Reservoir towards Lower 26 Reservoir and spillway

WORK DATA SHEET / INFORMATION EXHIBIT 27

View looking north from the tire tank of Middle 26 Reservoir

WORK DATA SHEET / INFORMATION EXHIBIT 28

View looking west from the tire tank of Middle 26 Reservoir

WORK DATA SHEET / INFORMATION EXHIBIT 29

View looking south from the tire tank of Middle 26 Reservoir

WORK DATA SHEET / INFORMATION EXHIBIT 30

View looking south from the bottom of the outfall of Middle 26 Reservoir

WORK DATA SHEET / INFORMATION EXHIBIT 31

4. Upper 26 Reservoir (Highest of the three reservoirs to be reclaimed in the channel)

• Dam is approximately 300 feet in length.

o Total Cubic Yards=10,391.38 cubic yards

• Crown=20ftX12ft 2,571.42 CY.

• Dam Slope=3,566.66 CY

• Outside Slope=4,253.3 CY

• Pool area acreage 73,000 SFSF/43560=1.67acres

• Dam area acreage 32,474 SF. SF/43560=0.75 acres

WORK DATA SHEET / INFORMATION EXHIBIT 32

View looking east from the top of Upper26 Reservoir

WORK DATA SHEET / INFORMATION EXHIBIT 33

View looking southwest from the top of the northeast dam of Upper 26 Reservoir

WORK DATA SHEET / INFORMATION EXHIBIT 34

View looking northwest from the middle of the Upper 26 Reservoir from the siphon box

WORK DATA SHEET / INFORMATION EXHIBIT 35

View looking southeast from the northwest corner of the dam of Upper 26 Reservoir

WORK DATA SHEET / INFORMATION EXHIBIT 36

View looking northeast from the outfall for Upper 26 Reservoir

WORK DATA SHEET / INFORMATION EXHIBIT 37

View looking northeast from the Upper 26 outfall

WORK DATA SHEET / INFORMATION EXHIBIT 38

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WORK DATA SHEET / INFORMATION EXHIBIT 40

View looking west from the bottom of the outfall for Upper 26 Reservoir

WORK DATA SHEET / INFORMATION EXHIBIT 41

5.Firewater Reservoir

• Dam is approximately 200 feet in length.

o Total Cubic Yards=6,349.14 cubic yards

• Crown=1,866,66 CY.

• Dam Slope=1,481.48 CY

• Outside Slope=3,000 CY

• Pool area acreage 73,000SFSF/43560=1.67acres

• Dam area acreage 23,456 SFSF/43560=0.54 acres

WORK DATA SHEET / INFORMATION EXHIBIT 42

View looking east from the top and center of the Firewater Reservoir

WORK DATA SHEET / INFORMATION EXHIBIT 43

View looking west from the top and center of the Firewater Reservoir

WORK DATA SHEET / INFORMATION EXHIBIT 44

View looking north from the siphon box o the Firewater Reservoir

WORK DATA SHEET / INFORMATION EXHIBIT 45

See Attached Maps.

View looking east from the top of Firewater Reservoir

Project Contacts

Jim Verplancke – Assistant Field Manager

(307) 684-1057 Andy Perez – Natural Resource Specialist

(307) 217-2063

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