Static Water Levels_0002.pdf

20-Mile Butte

Surface Ownership: Public

Mineral Ownership: Federal

Access: Private

Well nest value score (15): Data: 3, Condition: 3, Distance: 3, Surface: 3, Minerals: 2, Access: 1

Pawnee Coal. Initial water level: 539 feet in 2004. Max drawdown: 743 feet in 2014. Current water level:

728 feet in 2019. Well condition: Good. Summary: Well drew down 204 feet during CBNG production. Has shown a 15-foot recovery trend since 2014. Well is currently 189-feet below initial water level. TD= 1850’.

Wall Coal. Initial water level: 521 feet 2004. Max drawdown: 827 feet in 2012. Current water level: 773 feet in 2019. Well condition: Good. Summary: Well drew down 306 feet during CBNG production. Has shown a 54-foot recovery trend since 2014. Well is currently 252-feet below initial water level. TD= 1520’.

Anderson Coal. Initial water level: 545 feet 2004. Max drawdown: 705 feet in 2014. Current water level:

673 feet in 2019. Well condition: Good. Summary: Well drew down 160 feet during CBNG production. Has shown a 32-foot recovery trend since 2014. Well is currently 128-feet below initial water level. TD= 933’.

Wasatch Sand. Initial water level: 362 feet 2004. Max drawdown: 405 feet in 2017. Current water level:

395 feet in 2019. Well condition: Good. Summary: Well drew down 43 feet during monitoring period; however it is questionable if it has anything to do with CBNG production as it has fluctuated. Has shown a 10-foot recovery trend since 2017. Well is currently 33-feet below initial water level. TD=550’.

Site has 4 separate well bores, all within ~50’ of each other.

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1/28/04 1/28/06 1/28/08 1/28/10 1/28/12 1/28/14 1/28/16 1/28/18

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20-Mile Butte Coal vs. Sand

T52N R74W Sec.32 SESE, Surface Elevation = 4556 Ft.

Anderson Coal Corrected XD Water Level (ft.) Anderson Coal Manual Water Level (ft.)

20m Sand Corrected XD Water Level (ft.) 20m Sand Manual Water Level (ft.)

Pawnee Coal Corrected XD Water Level (ft.) Pawnee Coal Manual Water Level (ft.)

WCoal Corrected XD Water Level (ft.) WCoal Manual Water Level (ft.)

WCoal Well Head Gas Pressure (psi) Anderson Coal Well Head Gas Pressure (psi) Pawnee Coal Well Head Gas Pressure (psi)

All Night Creek

Surface Ownership: State

Mineral Ownership: Fee

Access: Private

Well nest value score (9): Data: 1, Condition: 1, Distance: 3 Surface: 2, Minerals; 1, Access: 1 (possibly higher if coalmines need to monitor GW recover post reclamation.

Big George Coal. Initial water level: 439 feet 2001. Max drawdown: 1051 feet by 2009. Current water level: 1051 feet in 2019. Well condition: Well is Dry to bottom of completion. / Gas Pressure. / Good.

Summary: Well drew down 612 feet during CBNG production. Water level is below TD of well. Has not risen above TD since 2009. Well is currently below TD. Has historically shown high gas pressure.

TD= 1051’.

Wasatch Sand. Initial water level: 292 feet in 2001. Max drawdown: 319 feet in 2019. Current water level: 319 feet in 2019. Well condition: Good. Summary: Well drew down 27 feet during monitoring period; however, it is questionable if it has anything to do with CBNG production as it has been steadily decreasing since inception. Drawdown is likely attributable to nearby coal mining. Well is currently 27-feet below initial water level. TD=969’.

Shallow Sand. Initial water level: 252 feet in 2002. Max drawdown: 268 feet in 2019. Current water level: 268 feet in 2019. Well condition: Good. Summary: Well drew down 16 feet during monitoring period; however, it is questionable if it has anything to do with CBNG production as it has been steadily decreasing since inception. Drawdown is likely attributable to nearby coal mining. Well is currently 16-feet below initial water level. TD= 640’.

Very Shallow Sand. Initial water level: 200 feet in 2002. Max drawdown: 200 feet in 2019. Current water level: 200 feet in 2019. Well condition: Good. Summary: Well has been stable since inception. Any fluctuation is likely attributable to surface conditions. TD= 420’

Very Very Shallow Sand. Initial water level: 95 feet in 2002. Max drawdown: 96 feet in 2019. Current water level: 96 feet in 2019. Well condition: Good. Summary: Well has been stable since inception. Any fluctuation is likely attributable to surface conditions. TD= 240’.

Note: These are all 5 separate well bores.

Note: Coal Well is dry to bottom of the well.

Note: about 4 or 5 years ago, I believe it was the uranium industry had a little interest in one or 2 of the sand wells, but I am not sure what ever came of it.

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3/21/01 3/21/03 3/21/05 3/21/07 3/21/09 3/21/11 3/21/13 3/21/15 3/21/17 3/21/19

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WS Corrected Transducer Water Level (ft.) WS Manual Water Level (ft.)

BG Corrected Transducer Water Level (ft.) BG Manual Water Level (ft.) (FM - Field Measured) BG Well Head Gas Pressure (psi) BG Manual Well Head Gas Pressure (psi)

All Night Creek Coal vs. Sand

T43N R74W Sec.36 NWSW, Surface Elevation = 5220 Ft.

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Amoco Sec 36 (aka 477236b1)

Mineral Ownership: Fee

Access: Public

Well nest value score (8): Data: 1, Condition: 1, Distance: 1, Surface: 2, Minerals; 1, Access: 2

Wyodak Coal. Initial water level: 244 feet in 1995. Max drawdown: 494 feet in 2002. Current water level: Unknown. Well condition: Poor. / High Gas Pressure. Summary: This is a problematic well. It has high gas pressure which prevents manual water level measurements. Additionally, there appears to be some casing separation problems that make manual measurements difficult. We have not had a water level measurement since 2016. This well should be a high priority to plug. TD=480’.

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4/25/95 4/25/98 4/25/01 4/25/04 4/25/07 4/25/10 4/25/13 4/25/16 4/25/19

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Amoco Sec 36 Wyodak Coal WCH 5 West Campbell Hydrological Well

SEO Pemit # P72107W T47N R72W Sec. 36 NWSE, Surface Elevation = 4682 Ft.

Corrected Transducer Water Level Manual Water Level Coal Well Dry to TD (ft) Well Head Gas Pressure Manual Well Head Gas Pressure (psi)

Beaver Federal

Mineral Ownership: Federal

Access: Private

Well nest value score (9): Data: 1, Condition: 1, Distance: 1, Surface: 3, Minerals: 2, Access: 1

Big George Coal. Initial water level: 330 feet in 2003. The last water level measurement we were able to obtain was in 2009 at 835 feet. Prior to that, the transducer had failed and the gas pressure had risen to a point where it was unsafe to open the well to take manual measurements. The gas pressure has remained too high to open the well to this day. Well condition: Very High Gas Pressure. / Poor.

Summary: Well drew down 505 feet during six years CBNG production. Only gas pressure data has been collected since 2009. TD= 1256’

Wasatch Sand. Initial water level: 245 feet 2003. Max drawdown: 256 feet in 2019. Current water level:

255 feet in 2019. Well condition: Good. Summary: Well drew down 11 feet during monitoring period.

Well is currently at its maximum drawdown. It is drawing down and trend is downward. TD= 1170’.

Note: These 2 wells are part of a single dual completion.

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4/18/03 4/18/05 4/18/07 4/18/09 4/18/11 4/18/13 4/18/15 4/18/17 4/18/19

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Beaver Federal Coal vs. Sand

Federal Beaver GWM 22-23-SSBG API #49-005-50085 T47N R75W Sec. 23 SENW, Surface Elevation = 4783 Ft.

Coal Corrected Transducer Water Level (ft.) Coal Manual Water Level (ft.) Sand Manual Water Level (ft.)

Sand Corrected Transducer Water Level (ft.) Coal Well Head Gas Pressure (psi) Coal Manual Gas Pressure (psi)

Bowers

Mineral Ownership: Federal

Access: Public

Well nest value score (11): Data: 1, Condition: 3, Distance: 1, Surface: 2, Minerals: 2, Access: 2

Sand Well Nest. In 2005 the Wyodak coal well was turned over to the operator and subsequently plugged. A series of four sand wells remained on site that monitor shallow GW between 60 and 350 feet. All of these wells have been largely stable during the monitoring period. Summary: Given that the water levels in the sands have not varied much throughout their history, and since there is no coal well here, this site is of little value.

Sand TD= 600’.

Shallow Sand TD=445.

Very Shallow Sand TD= 355’.

Very Very Shallow Sand TD= 83’ Note: all 4 wells are separate wells.

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350.00 4/23/2002 4/23/2005 4/23/2008 4/23/2011 4/23/2014 4/23/2017

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BOG State #4-36 (Bowers) Wasatch Sand Wells

T42N R72W Sec.36 SESW, Surface Elevation = 5019.45 Ft.

BOWERSS BOWERSSS BOWERSVSS BOWERSVVSS

Bullwacker

Mineral Ownership: Fee

Access: Private

Well nest value score (8): Data: 1, Condition: 1, Distance: 2, Surface: 2, Minerals: 1, Access: 1

Big George Coal. Initial water level: 92 feet in 2002. Max drawdown: 1359 feet in 2019. Most Recent water level: 1359 feet in 2019. Well condition: High Gas Pressure / Fair Summary: Well has drawn down 1267 feet during monitoring period. There is no functioning transducer in the well. Gas pressure is too high to open safely. Occasionally, techs open the well to take manual measurements despite high gas pressures. Trend is fairly level since 2016. Site is relatively close to Streeter wells. Due to proximity to other wells, sporadic data, and safety issues, recommend plugging this well. TD=1447’.

Wasatch Sand. Initial water level: 25 feet in 2002. Max drawdown: 334 feet in 2019. Current water level:

334 feet in 2019. Well condition: Good Summary: Well drew down 309 feet during monitoring period. Has shown no recovery. Trend continues downward. Well is currently 309-feet below initial water level. TD=1300’.

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4/11/02 4/11/04 4/11/06 4/11/08 4/11/10 4/11/12 4/11/14 4/11/16 4/11/18

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Bullwacker Coal vs. Sand

BCD State #33-16-4277MC Well SEO Permit #P142614W T42N R77W Sec. 16 NWSE, Surface Elevation = 5050 Ft.

Coal -Corrected Transducer Water Level Coal-Manual Water Level Sand-Corrected Transducer Water Level

Sand-Manual Water Level Coal -Well Head Gas Pressure Coal-Manual Well Head Gas Pressure

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Cedar Draw

Surface Ownership: Private

Mineral Ownership: Federal

Access: Private

Well nest value score (11): Data: 3, Condition: 3, Distance: 1, Surface: 1, Minerals: 2, Access: 1

Wall Coal. Initial water level: 231 feet in 2004. Max drawdown: 871 feet in 2011. Most Recent water level: 561 feet in 2019. Well condition: Frequent Flooding damages data collection equipment. / Fair.

Summary: Well drew down 640 feet during monitoring period and has recovered 310 feet. There is no functioning transducer in the well. Trend has been upward since 2012 but is slowly leveling out.

TD=1671’.

Wasatch Sand. Initial water level: 230 feet in 2004. Max drawdown: 765 feet in 2011. Current water level: 567 feet in 2019. Well condition: Frequent Flooding. / Fair. Summary: Well drew down 535 feet during monitoring period and has recovered 198 feet. There is no functioning transducer in the well.

Trend has been upward since 2012 but is slowly leveling out. Track is nearly the same as the coal well, so the two zones are clearly connected. TD=2100’.

Note: Sand well originally O&G well drilled to 9720’ that was later coverted into sand well. Listed TD=2100’ perforated at(between) 1470’ and 1390’.

Note: The two wells are located ~50’ apart.

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Coal Corrected Transducer Water Level (ft.) Coal Manual Water Level (ft.) Sand Corrected Transducer Water Level (ft.)

Sand Manual Water Level (ft.) Coal Well Head Gas Pressure (psi) Coal Manual Well Head Gas Pressure (psi)

Cedar Draw Coal vs. Sand

T51N R75W Sec. 2 NESW, Surface Elevation = 4279.4 & 4287 Ft.

Kennedy

Mineral Ownership: Federal

Access: Private

Well nest value score (13): Data: 2, Condition: 3, Distance: 2, Surface: 3, Mineral: 2, Access: 1

Anderson Coal. Initial water level: 428 feet in 2000. Max drawdown: 650 feet in 2008. Current water level: 477 feet in 2019. Well condition: Good Summary: Well drew down 222 feet during CBNG production. Has shown a 173-foot recovery trend. TD= 743’.

Wasatch Sand. Initial water level: 270 feet 2000. Max drawdown: 288 feet in 2009. Current water level:

280 feet in 2019. Well condition: Good Summary: Well drew down 18 feet during monitoring period;

however, it has shown an 8-foot recovery trend since 2017. TD=595’.

Note: these are 2 separate wells less then 50’ apart.

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5/24/00 5/24/02 5/24/04 5/24/06 5/24/08 5/24/10 5/24/12 5/24/14 5/24/16 5/24/18 W el l-H ea d

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Coal Corrected Transducer Water Level (ft.) Coal Manual Water Level (ft.)

Sand Corrected Transducer Water Level (ft.) Sand Manual Water Level (ft.)

Coal Well Head Gas Pressure (psi) Coal Manual Well Head Gas Pressure (psi)

Kennedy Anderson Coal vs Wasatch Sand

T52N R73W Sec.33 SESE, Surface Elevation=4489 Ft

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Lone Tree

Mineral Ownership: Federal

Access: Private

Well nest value score (10): Data: 2, Condition: 2, Distance: 2, Surface: 1, Mineral: 2, Access: 1

Coal. Initial water level: 453 feet in 2000. Max drawdown: 662 feet in 2009. Current water level: 649 feet in 2017. Well condition: High Gas Pressure – Well is currently not equipped./ Well has recently been measured Dry to Nearly Dry to bottom of completion. / Fair. Summary: Well drew down 209 feet during the monitoring period. Has shown a 13-foot recovery.

Wasatch Sand. Initial water level: 286 feet 2000. Max drawdown: 296 feet in 2005. Current water level:

284 feet in 2019. Well condition: Good. Summary: Well drew down 10 feet during monitoring period. It has shown a 12-foot recovery.

Note: Not finding on header file, so not sure exact TD. Coal well was dry for several years at ~660’ which would be close to current TD, and now has a few feet of water in it.

Note: This site has had contentious access in the past with land owner, not sure of his current position on well access. Which may make it a candidate for plugging.

Note: Around 2015 ( and not sure current condition) this well had a smokey vapor and odor when open but didn’t get hit on H2S meter, near the end of its dry period. Which may make it a candidate for plugging or possibly further investigation. This well has since gased up, and hasn’t been opened for a while

Note: This well is in close proximity to the City of Gillette and potential residential development, and has been dry, and currently is mostly dry, which may make it a candidate for further monitoring.

Note: when Methanagenesis was being considered, this well was one that had increased interest for further monitoring which may make it a candidate for further monitoring.

Note: gas pressure is slowly increasing.

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Huber Lone Tree Coal vs. Sand

T.50N R73W Sec.13 SWSE, Surface Elevation = 4760 Ft.

Coal Corrected Transducer Water Level (ft.) Coal Manual Water Level (ft.)

Sand Corrected Transducer Water Level (ft.) Sand Manual Water Level (ft.)

Coal Well Dry to TD (ft) Coal Well Head Gas Pressure (psi) Coal Manual Well Head Gas Pressure (psi)

North Cordero (477119c1)

Mineral Ownership: Federal

Access: Directly off of county road.

Well nest value score (8): Data: 2, Condition: 1, Distance: 1, Surface: 1, Mineral: 2, Access: 1

Wyodak Coal. Initial water level: 245 feet in 1995. Max drawdown: 392 feet in 2004. Most recent water level: 386 feet in 2016. Well condition: Strong Organic Odors / Poor Summary: Well drew down 147 feet during monitoring period. Had shown a 6-foot recovery as of 2016, but no measurement since then.

TD=392’.

Note: if one of the three wells series ( North Cordero, South Cordero, Amoco) was kept, this is the which would probably be best to keep of the three.

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1/1/95 1/1/97 1/1/99 1/1/01 1/1/03 1/1/05 1/1/07 1/1/09 1/1/11 1/1/13 1/1/15 1/1/17 1/1/19 W el l-H ea d

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North Cordero Wyodak Coal Well

MC-19-2-P SEO Permit # P82851W T47N R71W Sec.19 SWSW, Surface Elevation = 4650 Ft.

Coal Corrected Transducer Water Level (ft.) Coal Manual Water Level (ft.)

Coal Well Dry to TD (ft) Coal Well Head Gas Pressure (psi) Coal Manual Well Head Gas Pressure (psi)

Rose Draw

Mineral Ownership: Federal

Access: Private

Well nest value score (9): Data: 2, Condition: 1, Distance: 2, Surface: 1, Mineral: 2, Access: 1

Coal. Initial water level: 51 feet in 2009. Max drawdown: 237 feet in 2012. Current water level: 128 feet in 2019. Well condition: Dual Completion. Pressure Transducer Equipment is stuck in well and may be tangled with Sand transducer cable. / Poor. Summary: Well drew down 186 feet during monitoring period. Has shown a 109-foot recovery trend since 2012. Well is currently 26-feet above initial water level. TD= 1986’.

Sand. Initial water level: 67 feet 2009. Max drawdown: 92 feet in 2015. Current water level: 47 feet in 2019. Well condition: Dual Completion with Coal Well -May be tangled with Coal. / Fair. Summary: Well drew down 25 feet during monitoring period, and has shown a 45-foot recovery trend since 2017. Well is currently 20-feet above initial water level. TD= unsure exactly how deep packer is set at.

Underburden Sand. Initial water level: 13 feet 2009. Max drawdown: 105 feet in 2019. Current water level: 105 feet in 2019. Well condition: Slight Positive Gas Pressure Good Summary: Well drew down 92 feet during monitoring period and has shown no recovery trend. Well is currently 92-feet below initial water level. TD 2030’.

Note: Coal Well and Overburden Sand are a Dual completion and were initially drilled as production well. Underburden Sand Well is a separate well ~100’ away.

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5/23/2009 5/23/2011 5/23/2013 5/23/2015 5/23/2017 5/23/2019

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Rose Draw Coal vs. Sand

T52N R77W Sec 19 NESE, Surface Elevation = 3914 Ft.

Rose Draw Coal Coal Measured Water Level (ft) Rose Draw Sand Measured Water Level Coal Well Head Gas Pressure (psi)

South Cordero

Mineral Ownership: Coal

Access: Private

Well nest value score (1-5): 1 Should be plugged due to H2S.

Well nest value score (8): Data: 2, Condition: 1, Distance: 1, Surface: 1, Mineral: 2, Access: 1

Wyodak Coal. Initial water level: 159 feet 1995. Max drawdown: 358 feet in 2008. Most recent water level: 356 feet in 2016. Well condition: Dual Completion with G/W UBS. / Obstruction Down Hole preventing WL Measurement. / Poor. Summary: Well drew down 199 feet during monitoring period.

Has shown a 2-foot recovery trend since 2008. Well is currently 197-feet below initial water level.

TD=358’.

Well has H2S.

Note: Brent see above red, Not sure where you got this information as this is not a dual completion nor has been to my knowledge.

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5/18/19955/18/19975/18/19995/18/20015/18/20035/18/20055/18/20075/18/20095/18/20115/18/20135/18/20155/18/20175/18/2019

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South Cordero Wyodak Coal

MC 6-1-P -SEO Permit # P82852W T46N R71W Sec. 6 NESW, Surface Elevation = 4634 Ft..

Corrected Transducer Water Level Manual Water Level

Coal Well Dry to TD (ft) Well Head Gas Pressure

Coal Manual Well Head Pressure (psi)

Squaw Butte

Mineral Ownership: Federal

Access: Private

Well nest value score (10): Data: 1, Condition: 2, Distance: 1, Surface: 3, Mineral: 2, Access: 1

Coal. Initial water level: 356 feet 2001. Max drawdown: 356 feet in 2001. Current water level: 289 feet in 2019. Well condition: Fair. /PVC well open to the atmosphere. /Unequipped. / Difficult Access.

Summary: Well has not drawn down at all during the monitoring period. It is currently 67 feet above the initial level. TD=610’.

Note: This well is PVC casing with no ability to contain Gas if site ever developed gas pressure.

Note: This may still be a USGS well.

10/17/01 10/17/04 10/17/07 10/17/10 10/17/13 10/17/16

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Squaw Butte Fort Union Coal

USGS 15-6-M SEO Permit # P63739W T56N R78W Sec. 1 SENE, Surface Elevation = ?

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Throne

Mineral Ownership: Fee

Access: Private

Well nest value score (10): Data: 3, Condition: 3, Distance: 1, Surface: 1, Mineral: 1, Access: 1

Wyodak Coal. Initial water level: 816 feet 2001. Max drawdown: 1123 feet in 2006. Current water level:

875 feet in 2019. Well condition: Good. Summary: Well drew down 307 feet during monitoring period.

Has shown a 248-foot recovery trend since 2006. Well is currently 59-feet below initial water level.

Wasatch Sand. Initial water level: 601 feet 2001. Max drawdown: 901 feet in 2008. Current water level:

744 feet in 2019. Well condition: Failed Pressure Transducer has oxidized and is stuck to the well casing

– Still able to get WL Measurements Manually. / Fair Summary: Well drew down 300 feet during monitoring period. Has shown a 157-foot recovery trend since 2008. Well is currently 143-feet below initial water level.

Note: these are 2 separate wells. Header file has both listed with TD of 1511’. Coal listed as open hole beyond 1511, and Sand listed as perfed between 1400’ and 1440’. It seems odd that both would have been drilled to exact same depth.

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Throne Ranch Coal vs. Sand

T47N R74W Sec. 26 NWNW, Surface Elevation = 5028.6 Ft.

Coal Corrected Transducer Water Level (ft.) Coal Manual Water Level (ft.)

Sand Corrected Transducer Water Level (ft.) Sand Manual Water Level (ft.)

Coal Well Head Gas Pressure (psi) Coal Manual Well Head Gas Pressure (psi)