INFORMATION RELATIVE TO 
THE DRAFT TITLE V OPERATING PERMIT
April 29, 2026

GENERAL FACILITY INFORMATION
Facility Name:  Tennessee Gas Pipeline Company LLC, Greenville Compressor Station No. 54
Facility Address:  272 Tennessee Gas Road, Greenville, MS 38701    
County: Washington
SIC Code(s): 4922
NAICS Code(s): 486210  

APPLICATION SUMMARY 
Permit No.: 2800-00037
Permit Action:  Renewal
Permit Folder: PER20240001
Application Receipt Date: December 19, 2024
Application Deemed Complete: 
CBI Submitted?: No	NSPS (Part 60): N/A
NESHAP (Part 61): N/A
NESHAP (Part 63): A, ZZZZ, DDDDD
112(r) / RMP: N/A
Other: N/A	

FACILITY DESCRIPTION
Tennessee Gas Pipeline Company owns and operates its Greenville Compressor Station located at 272 Tennessee Gas Road near Greenville, Mississippi, for the purpose of transporting natural gas through its pipeline distribution system. Natural gas compression at the Greenville Compressor Station is accomplished through nine (9) 1,700-horsepower natural gas-fired reciprocating compressor engines and five (5) 1,320- horsepower natural gas-fired reciprocating compressor engines. All combustion equipment fires only pipeline quality natural gas. The compressor station also operates one (1) 1,081-horsepower natural gas-fired emergency generator engine, one (1) 5.6 MMBTUH process heater, one (1) 4.0 MMBTUH process heater, one (1) 0.3 MMBTUH process heater.  The station also has facility blowdowns, fugitive emissions, as well as, insignificant activities.

TITLE V SOURCE APPLICABILITY 
The facility’s potential-to-emit (PTE) exceeds the Title V major source threshold of 100 tons per year (tpy) for each of the following criteria air pollutants: Nitrogen Oxides (NOx), Carbon Monoxide (CO), and Volatile Organic Compounds (VOC). The facility’s potential-to-emit hazardous air pollutants (HAPs) exceeds the Title V major source thresholds of 25 tpy of total HAPs and 10 tpy for formaldehyde.

Facility-Wide Potential-to-Emit Summary1
Pollutant	PTE Emissions (tons/yr)	
Particulate Matter (TSP)	Not reported	
PM10	52.66	
PM2.5	52.66	
Sulfur Dioxide (SO2)	0.65	
Nitrogen Oxides (NOx)	2,776.37	
Carbon Monoxide (CO)	387.00	
Volatile Organic Compounds (VOC)	140.92	
Total Reduced Sulfur (TRS)	0.00	
Lead	0.00	
CFC/HCFC	0.00	
Formaldehyde	59.77	
Total HAP	92.55	
1 The PTE emissions reflect any emission limits or enforceable restrictions included in the proposed permit.

PREVENTION OF SIGNIFICANT DETERIORATION (PSD) APPLICABILITY
The facility is not one of the 28 categorical facilities listed in 40 CFR 52.21(b)(1)(i)(a); therefore, the PSD threshold for a major source is 250 tpy.  The facility has the potential to emit more than 250 tons per year of NOx and CO; therefore, the facility is considered a major stationary source.  This permitting action will not change the current PSD status of the facility as an existing major source.

FACILITY MODIFICATIONS AND/OR PERMIT CHANGES
There are no significant permit changes or modifications proposed as part of this permitting action. There is one (1) minor change in the draft permit. An application revision package was submitted on September 12, 2025, that incorporated the replacement of the 0.8 MMBtu/hr natural gas-fired wastewater evaporator (Emission Point AA-051) with a 0.3 MMBtu/hr natural gas-fired wastewater evaporator (proposed as Emission Point AA-052). 

COMPLIANCE ASSURANCE MONITORING (CAM) APPLICABILITY
40 CFR Part 64 specifies the requirements for CAM.  The general applicability of this rule can be found in 40 CFR 64.2 and requires a Title V source to comply with the CAM requirements if all three of the following criteria are met for a pollutant-specific emission unit (PSEU):

1.	The unit is subject to an emission limitation or standard for a regulated air pollutant other than exemptions under 40 CFR 64.2(b)(1);
2.	The unit uses a control device to comply with the standard; and
3.	The unit has pre-control emissions exceeding Title V major source threshold.

There is no control equipment associated with any emission units subject to an emission limit or standard at this facility, so Compliance Assurance Monitoring does not apply.

NATIONAL EMISSION STANDARDS FOR HAZARDOUS AIR POLLUTANTS (NESHAP) APPLICABILITY
The facility is a major source of Hazardous Air Pollutants (HAP) since the facility has the potential to emit more than 25 tons per year of total HAPs and 10 tpy of the individual HAP, formaldehyde.

40 CFR 63 Subpart ZZZZ
The permittee is subject to Subpart ZZZZ—National Emissions Standards for Hazardous Air Pollutants for Stationary Reciprocating Internal Combustion Engines and shall comply with all applicable requirements.    

Emission Points AA-019 through AA-027 and AA-029 and AA-031 through AA-034 are existing spark ignition 2 stroke lean burn (2SLB) stationary RICE with a site rating of more than 500 brake HP located at a major source of HAP emissions, and as such do not have to meet the requirements of 40 CFR Part 63, Subpart ZZZZ or the General Provisions of 40 CFR 63, Subpart A, including initial notification requirements.

Emission Point AA-035 is an existing emergency spark ignition four stroke rich burn (4SRB) stationary RICE with a site rating greater than 500 brake HP located at a major source of HAP emissions and as such does not have to meet any requirements under 40 CFR Part 63, Subpart ZZZZ, as long as the engine meets the definition of an emergency engine under the subpart.

40 CFR 63 Subpart YYYY
MACT Subpart YYYY - National Emissions Standards for Hazardous Air Pollutants for Hazardous Air Pollutants for Stationary Combustion Turbines, 40 CFR Part 63, Subpart YYYY establishes emission and operating limitations for HAP emissions from stationary combustion turbines located at a major source for HAPs.  The Greenville Compressor Station does not operate any turbines.  

40 CFR 63 Subpart DDDDD 
MACT Subpart DDDDD - National Emission Standards for Hazardous Air Pollutants for Industrial for Institutional, Commercial, and Industrial Boilers and Process Heaters, 40 CFR Part 63, Subpart DDDDD, establishes emission and operating limitations for HAP emissions from industrial, commercial, or institutional boilers and process heaters that are located at, or is part of, a major source of HAPs.

The facility operates one (1) 4.0 MMBTUH natural gas-fired process heater (Emission Point AA-050) and one (1) 0.3 MMBTUH natural gas-fired wastewater evaporator, which qualifies as a process heater (Emission Point AA-052). Emission Point AA-050 is an existing process heater in the “units designed to burn gas 1 fuel” subcategory, and as such, is required to comply with the work practice standards, including five-year tune-ups and a 1-time energy assessment.  The 1-time energy assessment was completed in November 2015.  The unit is permitted to combust only natural gas, except during periods of natural gas curtailment or supply interruption as defined by 40 CFR 63.7575.

Emission Point AA-052 is a new process heater in the “units designed to burn gas 1 fuel” subcategory, and as such, is required to comply with the work practice standards, including five-year tune-ups.  The 1-time energy assessment is not requried.  The unit is permitted to combust only natural gas, except during periods of natural gas curtailment or supply interruption as defined by 40 CFR 63.7575.

The facility also operates one (1) 5.6 MMBTUH natural gas-fired process heater (Emission Point AA-036).  Emission Point AA-036 is an existing process heater in the “units designed to burn gas 1 fuel” subcategory, and as such, is required to comply with the work practice standards, including biennial tune-ups and a 1-time energy assessment.  The 1-time energy assessment was completed in November 2015.  The unit is permitted to combust only natural gas, except during periods of natural gas curtailment or supply interruption as defined by 40 CFR 63.7575.

The facility has several insignificant space heaters and water heaters.  However, space heaters and hot water heaters are not process heaters under the definition of process heaters in 40 CFR 63.7575 and thus are not subject to the MACT.  

NEW SOURCE PERFORMANCE STANDARDS (NSPS) APPLICABILITY

40 CFR 60 SUBPART GG
The provisions of 40 CFR 60 Subpart GG - New Source Performance Standards for Stationary Gas Turbines (NSPS GG) are applicable to stationary gas turbines with a heat input at peak load equal to or greater than 10 MMBTUH, which commenced construction, modification, or reconstruction after October 3, 1977.  The Greenville Compressor Station does not operate any turbines.  Therefore, NSPS GG is not applicable to the facility.

40 CFR 60 SUBPART KKKK
The provisions of 40 CFR 60 Subpart KKKK - New Source Performance Standards for Stationary Combustion Turbines (NSPS KKKK) are applicable to stationary combustion turbines with a heat input at peak load equal to or greater than 10.7 gigajoules (10 MMBtu) per hour, based on the higher heating value of the fuel, which commenced construction, modification, or reconstruction after February 18, 2005.  The Greenville Compressor Station does not operate any turbines.  Therefore, NSPS KKKK is not applicable to the facility.

40 CFR 60 SUBPART IIII
The provisions of 40 CFR 60 Subpart IIII - New Source Performance Standards for Stationary Compression Ignition Internal Combustion Engines (NSPS IIII) are applicable to stationary compression ignition internal combustion engines that commenced construction, modification, or reconstruction after June 12, 2006.  The stationary reciprocating internal combustion engines at the Greenville Compressor Station are stationary spark ignition internal combustion engines.  Therefore, NSPS IIII is not applicable to the facility.  

40 CFR 60 SUBPART JJJJ
The provisions of 40 CFR 60 Subpart JJJJ - New Source Performance Standards for Stationary Spark Ignition Internal Combustion Engines are applicable to stationary spark ignition internal combustion engines that commenced construction, modification, or reconstruction after June 12, 2006.  Emission Points AA-019 through AA-027 and AA-029 and AA-031 through AA-035 are stationary spark ignition internal combustion engines, however, each engine was manufactured prior to the NSPS JJJJ effective date; therefore, the engines are not subject to any requirements of NSPS JJJJ.

40 CFR 60 SUBPART OOOO
The provisions of 40 CFR 60 Subpart OOOO - Standards of Performance for Crude Oil and Natural Gas Production, Transmission and Distribution for which Construction, Modification or Reconstruction Commenced After August 23, 2011, and on or before September 18, 2015, are potentially applicable to various sources at an affected compressor station.  All sources at the compressor station were installed prior to the August 23, 2011, effective date, therefore, the sources are not subject to any requirements of NSPS OOOO.  

40 CFR 60 SUBPART OOOOa
The provisions of 40 CFR 60 Subpart OOOOa - Standards of Performance for Crude Oil and Natural Gas Facilities for which Construction, Modification or Reconstruction Commenced After September 18, 2015 are applicable to various sources at an affected compressor station.  However, the compressor station was constructed prior to the September 18, 2015, affected date.  Further, the Greenville Compressor Station has not undergone modification that would trigger the NSPS.  Therefore, NSPS OOOOa is not applicable to the Greenville Compressor Station.

40 CFR 60 SUBPART OOOOb
The provisions of 40 CFR 60 Subpart OOOOb - Standards of Performance for Crude Oil and Natural Gas Facilities for which Construction, Modification or Reconstruction Commenced After December 6, 2022 are applicable to various sources at an affected compressor station.  However, the compressor station was constructed prior to the December 6, 2022, affected date.  Further, the Greenville Compressor Station has not undergone modification that would trigger the NSPS.  Therefore, NSPS OOOOb is not applicable to the Greenville Compressor Station.

40 CFR 60 SUBPART OOOOa
The provisions of 40 CFR 60 Subpart OOOOc - Emissions Guidelines for Greenhouse Gas Emissions From Existing Crude Oil and Natural Gas Facilities establishes emission guidelines and compliance schedules for the control of greenhouse gas (GHG) emissions from designated facilities in the crude oil and natural gas source category that commenced construction, modification or reconstruction on or before December 6, 2022. 

The MDEQ must submit a state plan to the EPA that implements the emission guidelines contained in this NSPS OOOOc by March 9, 2026. The Greenville Compressor Station is considered a natural gas compression facility constructed before December 6, 2022, and is potentially subject to NSPS OOOOc. Once the state plan is available, TGP will be required to review and comply with the appropriate regulations as required by NSPS OOOOc.

SPECIFIC APPLICABLE REQUIREMENTS
Emission Points AA-019 through AA-027 and AA-029 and AA-031 through AA-052 are subject to state standards for PM and Opacity. Emission Points AA-019 through AA-027 and AA-029 and AA-031 through AA-035 each have a rated heat input greater than 10 MMBTU/hr and thus are subject to a PM limit of E=0.8808 * I-0.1667 where E is the emission rate in pounds per million BTU per hour heat input and I is the heat input in millions of BTU per hour.  Emission Points AA-036, AA-050, and AA-052 each have a rated heat input less than 10 MMBTU/hr and thus are subject to a PM limit of 0.6 lb/MMBTU.  Emission Points AA-036, AA-050 and AA-052 are also subject to the state SO2 standard of 4.8 lbs/MMBTU.  

The facility’s small water and comfort space heaters qualify as insignificant activities.  These activities are subject to the state standards for PM, SO2 and Opacity.  Since these units combust natural gas and the size of the units are small, no monitoring is proposed for the units.  There are no other applicable requirements for the facility’s other insignificant activities listed in their Title V application.

Other requirements are tabularized below.

Emission Point(s)	Pollutant/ Parameter	Draft Permit Emission Limits	Monitoring	
AA-019 through AA-027, AA-029, AA-031
through
AA-036,
AA-050,
and
AA-052	Fuel Restriction	Natural gas only	Record type of fuel	
AA-019 through AA-027, AA-029, and       AA-031 through AA-035	PM	E=0.8808*I -0.1667	Record type and quantity of fuel	
AA-035	Operations	Install and operate an hour meter	Monitoring of operations	
	Operations	Emergency Operations	Monitoring of operations	
AA-036,
AA-050,
and
AA-052	PM	0.6 lb/MMBTU	Record type and quantity of fuel	
	SO2	4.8 lb/MMBTU	Record type and quantity of fuel	
	HAPs	Conduct Tune-ups	Monitoring of operations	

OTHER REQUIREMENTS:
N/A