ICIS-AIR PA000757812
CNX MIDSTREAM OPR CO LLC /MORRIS DEHY STATION, Graysville, PA: Clean Air Act compliance record, inspections, violations, penalties
- OperatingOperating status
- Synthetic minor sourceEmissions classification
- No Violation IdentifiedCurrent violation status, as filed
- 16Compliance evaluations since January 1, 2017
- 0High-priority violations since January 1, 2017
- 0Formal enforcement actions since January 1, 2017
CNX MIDSTREAM OPR CO LLC /MORRIS DEHY STATION is on EPA’s ICIS-AIR register at 293 STRINGTOWN RD, Graysville in Greene County, Pennsylvania: operating status operating, emissions classification synthetic minor source, current violation status “No Violation Identified”. Greene County is on EPA’s Green Book list of areas that do not meet a national air quality standard.
Identity
| Facility as filed | CNX MIDSTREAM OPR CO LLC /MORRIS DEHY STATION |
|---|---|
| ICIS-AIR ID | PA000757812 |
| EPA facility registry ID | 110056289289 |
| Operating status | Operating |
| Emissions classification | Synthetic minor source |
| Current violation status (HPV field) | No Violation Identified |
| Address | 293 STRINGTOWN RD, Graysville, PA 15337 |
| County | Greene County |
| In a nonattainment county | Yes (EPA Green Book) |
| Industry (NAICS) | Mining support (NAICS 2131) |
| SIC code | 1311 |
| EPA region | 03 |
Programs and pollutants
The program, pollutant and Title V files are not loaded: what this page covers.
Compliance evaluations
- 16Evaluations since January 1, 2017
- 3Full compliance evaluations
| Date | What EPA recorded | Agency | Programs |
|---|---|---|---|
| May 29, 2026 | PCE Off-Site | State | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| April 22, 2025 | PCE Off-Site | State | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| April 18, 2024 | PCE Off-Site | State | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| March 8, 2024 | PCE Off-Site | State | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| December 7, 2023 | FCE On-Site | State | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| August 29, 2023 | PCE Off-Site | State | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| June 11, 2023 | PCE Off-Site | State | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| August 30, 2022 | PCE Off-Site | State | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| April 15, 2022 | PCE Off-Site | State | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| July 29, 2021 | PCE Off-Site | State | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| December 21, 2020 | FCE On-Site | State | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| April 22, 2020 | PCE Off-Site | State | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| June 17, 2019 | PCE Off-Site | State | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| April 6, 2018 | PCE Off-Site | State | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| November 28, 2017 | FCE On-Site | State | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| April 4, 2017 | PCE Off-Site | State | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
Violations
- 2Violation determinations since January 1, 2017
- 0Of them high-priority
What high-priority and federally reportable violations mean.
| Date | What EPA recorded | Agency | Programs |
|---|---|---|---|
| December 7, 2023 | Earliest FRV determination | State | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| December 21, 2020 | Earliest FRV determination | State | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
Enforcement and penalties
0 of the formal enforcement actions carry a penalty filed above zero. How a penalty is shown.
Informal enforcement
| Date | What EPA recorded | Agency |
|---|---|---|
| February 2, 2021 | Notice of Violation | State |
Stack tests
- 19Stack tests since January 1, 2017
- 0Recorded as failed
| Date | What EPA recorded | Agency |
|---|---|---|
| June 19, 2026 | Pass | State |
| September 10, 2025 | Pass | State |
| June 17, 2025 | Pass | State |
| February 27, 2025 | Pass | State |
| September 11, 2024 | Pass | State |
| June 20, 2024 | Pass | State |
| September 14, 2023 | Pass | State |
| June 21, 2023 | Pass | State |
| September 20, 2022 | Pass | State |
| June 21, 2022 | Pass | State |
| April 7, 2022 | Pass | State |
| June 28, 2021 | Pass | State |
| October 9, 2020 | Pass | State |
| July 28, 2020 | Pass | State |
| October 24, 2019 | Pass | State |
| July 16, 2019 | Pass | State |
| April 15, 2019 | Pass | State |
| April 16, 2018 | Pass | State |
| February 20, 2018 | Pass | State |
Watch CNX MIDSTREAM OPR CO LLC /MORRIS DEHY STATION
Free from EPA: Detailed Facility Report, ECHO Notify (registry ID 110056289289).
Other air sources in Pennsylvania beside CNX MIDSTREAM OPR CO LLC /MORRIS DEHY STATION
- CNX MIDSTREAM OPR CO LLC/BELL POINT 2 M&R DEHYDRATION STA APOLLO, Westmoreland County PA000853016
- CNX MIDSTREAM OPR CO LLC/BUCKLAND COMP STA WIND RIDGE, Greene County PA000832025
- CNX MIDSTREAM OPR CO LLC/HOPEWELL STATION SYCAMORE, Greene County PA000774120
- CNX MIDSTREAM OPR CO LLC/MAMONT COMP STA APOLLO, Westmoreland County PA000735870
- CNX MIDSTREAM OPR CO LLC/MCQUAY COMP STA CENTER TOWNSHIP, Greene County PA000706725
- CNX MIDSTREAM OPR CO LLC/MOR-44 COMP STA WEST FINLEY, Washington County PA000852635
- CNX MIDSTREAM OPR CO LLC/NV-57 COMP STA PROSPERITY, Washington County PA000785332
- CNX MIDSTREAM OPR CO LLC/RHL 22 DEHYDRATION STA WIND RIDGE, Greene County PA000833821
- COAL GAS RECOVERY LLC/DD-11 COMP STA BRAVE, Greene County PA000721934
- COAL GAS RECOVERY LLC/DD-2/3 WAYNESBURG, Greene County PA000753294
- COAL GAS RECOVERY LLC/DD-21/22 WAYNESBURG, Greene County PA000741675
- COAL GAS RECOVERY LLC/DFM-10 WAYNESBURG, Greene County PA000741687
- COAL GAS RECOVERY LLC/DFM-13/14 COMP STA HOLBROOK, Greene County PA000728008
- COAL GAS RECOVERY LLC/DFM-3/4 COMP STA WAYNESBURG, Greene County PA000740573
- COAL GAS RECOVERY/DD-8/9 & DD-9S WAYNESBURG, Greene County PA000731978
- COAL GAS RECOVERY/GD-1/DD-20 WAYNESBURG, Greene County PA000742887
- COASTAL LUMBER CO/SPARTANSBURG FOREST PR SPARTANSBURG, Crawford County PA000557886
- COATESVILLE SCRAP IRON & METAL/COATESVIL COATESVILLE, Chester County PA000510084
- COATING & CONVERTING TECH CORP/ADHESIVE PHILADELPHIA, Philadelphia County PAPAM00042101T0114
- COBHAM INTEGRATED ELECTRONIC SOLUTIONS/MONTGOMERY TWP LANSDALE, Montgomery County PA000643504
- COCHRANVILLE AMOCO COCHRANVILLE, Chester County PA0000004202944003
- COCKER'S TOWING, INC. ELIZABETHTOWN, Lancaster County PA0000004207144026
- CODERS CLNR/MARKET ST PLT WILLIAMSPORT, Lycoming County PA000546781
- CODO MANUFACTURING CORPORATION LEETSDALE, Allegheny County PAACH0004200300233
- CODORUS SERVICE CENTER HANOVER, York County PA0000004213340004
- COEN OIL CO/SOUTHWEST GREENSBURG GREENSBURG, Westmoreland County PA000495360
- COGO #107 PITTSBURGH, Allegheny County PAACH0004200301408
- COGOS #805 PITTSBURGH, Allegheny County PAACH0004200301180
- COGOS CO #798 PITTSBURGH, Allegheny County PAACH0004200301409
- COGOS CO #813 PITTSBURGH, Allegheny County PAACH0004200301410
- COGOS CO #821 WHITE OAK, Allegheny County PAACH0004200301142
- COGOS CO. #822 ALLISON PARK, Allegheny County PAACH0004200301354
- COHERENT CORP SAXONBURG PLT SAXONBURG, Butler County PA000493621
- COINCO INC DBA MORCO/MORCO COCHRANTON, Crawford County PA0002992
- COIT PITTSBURGH, Allegheny County PAACH0004200395024
- COLIA DRY CLEANERS/NEW CASTLE NEW CASTLE, Lawrence County PA000572002
- COLLEGEVILLE AUTO BODY/COLLEGEVILLE COLLEGEVILLE, Montgomery County PA000640396
- COLLEGEVILLE HOLDINGS LLC/COLLEGEVILLE COLLEGEVILLE, Montgomery County PA000294642
- COLLEX COLLISION EXPERTS MORTON, Delaware County PA000639605
- COLLEX COLLISION EXPERTS/CHELTENHAM CHELTENHAM, Montgomery County PA000640200
- COLLEX COLLISION EXPERTS/COATESVILLE COATESVILLE, Chester County PA000640139
- COLLEX COLLISION EXPERTS/MORTON MORTON, Delaware County PA000639603
- COLLEX COLLISION EXPERTS/RICHBORO RICHBORO, Bucks County PA000640877
- COLLIERS CITGO GIBSONIA, Allegheny County PAACH0004200301355
- COLLINGDALE AUTO BODY & REPAIRS/COLLINGDALE COLLINGDALE, Delaware County PA000640360
- COLLINS PINE CO/KANE HARDWOOD DIV KANE, McKean County PA000495979
- COLLISION CENTER LOCK HAVEN, Clinton County PA0000004203544026
- COLLISION CONCEPTS/ORELAND ORELAND, Montgomery County PA000640656
- COLLISION CONNECTION CHAMBERSBURG, Franklin County PA0000004205544021
- COLLISION MAX/FALLS FAIRLESS HILLS, Bucks County PA000639736
- COLONA TRANSFER LP/COLONA DOCK MONACA, Beaver County PA000558832
- COLONA TRANSFER/MONACA PLT MONACA, Beaver County PA000563682
- COLONIAL AUTO BARTONSVILLE, Monroe County PA0000004208940002
- COLONIAL BEEF COMPANY PHILADELPHIA, Philadelphia County PAPAM0004210144025
- COLONIAL CLEANER PHILADELPHIA, Philadelphia County PAPAM0004210101731
- COLONIAL CLEANERS BETHLEHEM, Northampton County PA0000004209595007
- COLONIAL CLEANERS LATROBE, Westmoreland County PA0000004212995005
- COLONIAL CLEANERS PITTSBURGH, Allegheny County PAACH0004200395025
- COLONIAL CLNR/NORRISTOWN BORO NORRISTOWN, Montgomery County PA000638435
- COLONIAL COLLISION/COLLEGEVILLE COLLEGEVILLE, Montgomery County PA000640402
EPA ICIS-AIR download, loaded September 14, 2026.