EPA TRI Facility · Natural Gas Processing
Seneca Gas Processing Plant
Summerfield, OH · Parent: Marathon Petroleum Corp
- Total releases
- 22.9K lbs
- Chemicals reported
- 4
- Carcinogens
- 1
- Primary pathway
- Air Releases
AIR Form-R mix
Seneca Gas Processing Plant: how the 22.9K lbs splits
22.9K lbs across all reported pathways
- Air Releases 21.5K lbs 93.9%
- Off-site Transfers 1.4K lbs 6.1%
Seneca Gas Processing Plant's 22.9K lbs Form-R total is AIR - air releases is 93.9% of the bar. Next segment: off-site transfers at 6.1%. Leading chemical by pounds: n-Hexane.
LIGHT volume AIR pathway CLEAN
Seneca Gas Processing Plant is an EPA Toxics Release Inventory reporter in Summerfield, OH, in the natural gas processing sector. It reported 6.8K lbs of releases across 3 chemicals in 2023, and 22.9K lbs in total across its 2022-2023 reporting years. That ranks 7,937 of 25,986 TRI facilities nationwide by cumulative reported pounds, counting each facility over however many years it has filed. In Ohio's 1,299 reporting TRI sites, pounds #1 is not chemical-count #1. Seneca Gas Processing Plant is pounds #530 and chemical-count #475 at 22.9K lbs. Ineos Nitriles USA LLC leads reported pounds (42.4M lbs) at 31 chemicals (chemical-count #10). Heritage Thermal Services leads chemical count at 217 chemicals (431.4K lbs, pounds #116). Reported volume fell against 2022. Pounds reported are not a measure of toxicity or health risk. Nearest other TRI reporters: Berne Plant; International Converter LLC; Wampum Hardware Co.; Monogram Metals Inc. Similar-scale Natural Gas Processing peers outside Ohio: Mentone Gas Plant; Redcliff Plant; Midmar East; Calumet Gas Processing Plant. Other Marathon Petroleum Corp sites in this extract: Blanchard Refining Co LLC; Marathon Petroleum Co LP; Marathon Mandan Refinery; Catlettsburg Refining LLC. Largest disclosed chemicals by pounds: n-Hexane; Propylene; 1,3-Butadiene; Ethylene glycol.
Seneca Gas Processing Plant stamps LIGHT volume with a dominant AIR pathway (93.9% air releases) across 4 chemicals · 1 carcinogen-classified. Cumulative Form-R extract: 22.9K lbs (2022–2023). All figures are self-reported EPCRA §313 estimates, not measured stack emissions or a health-risk score. Scale peers include Mentone Gas Plant and Redcliff Plant.
Seneca Gas Processing Plant vs. every reporting TRI facility
Cumulative reported release pounds, with this facility marked in the national distribution
23K lbs Top 31% higher than 69% of 25,986 reporting TRI facilities
Each bar is a $1M-wide band; taller bars hold more reporting TRI facilities. The dashed line and filled bar mark this facility. Hover, focus, or tap a bar for its full count, share, and position.
Source U.S. Environmental Protection Agency, Toxics Release Inventory · 2023 reporting year
Seneca Gas Processing Plant inside Noble's TRI pounds
Among the 339 Natural Gas Processing facilities in this database, Seneca Gas Processing Plant reports the 170th-largest volume (22.9K lbs). This one site accounts for 75.8% of every pound reported in Noble. Its reported volume is concentrated rather than spread: n-Hexane alone is 100% of the total. Scale peers outside Ohio include Mentone Gas Plant and Redcliff Plant.
County-dominant here means ≥25% of Noble's reported pounds (30.2K lbs county total). Shares only print when the site reports ≥1,000 lbs.
Annual disclosure change
What changed: EPA TRI 2023 reporting year
- Seneca Gas Processing Plant's total reported releases fell from 16.1 thousand lb in 2022 to 6.8 thousand lb in 2023, based on EPA TRI filings.
- Seneca Gas Processing Plant's off-site transfers rose from 0 lb in 2022 to 1.4 thousand lb in 2023, based on EPA TRI filings.
- Seneca Gas Processing Plant's air releases fell from 16.1 thousand lb in 2022 to 5.4 thousand lb in 2023, based on EPA TRI filings.
Seneca Gas Processing Plant Form-R facts
Compare this facility
See how Seneca Gas Processing Plant stacks up against nearby facilities and the typical reporter.
52% more than the comparison
2.0× more than the comparison
Comparison reflects reported pounds and chemical counts, not toxicity or health risk. Averages cover facilities reporting any release.
How does this facility release toxic chemicals?
How Seneca Gas Processing Plant releases toxic chemicals into the environment. Total: 22.9K lbs.
Emissions Trend Summary
From 2022 to 2023, total releases decreased by 58% (16.1K lbs to 6.8K lbs).
Seneca Gas Processing Plant: annual Form-R pounds
LIGHT site · AIR pathway · TRI years 2022–2023
- 2022 0
- 2023 0
What this shows Seneca Gas Processing Plant year-over-year reported totals (decreased by 58% from 2022 to 2023). TRI figures are self-reported estimates and can swing with production, waste handling, and reporting changes, not only with controls. Lead chemical in the extract: n-Hexane.
| Year | Total | Chemicals |
|---|---|---|
| 2022 | 16.1K lbs | 3 |
| 2023 | 6.8K lbs | 3 |
Chemical Releases
Aggregated across all reporting years (2022–2023). 1 of 4 chemicals are carcinogens. Sorted by total release volume.
| Chemical | Total | Flags |
|---|---|---|
| n-Hexane | 22.9K lbs | - |
| Propylene | 0 lbs | - |
| 1,3-Butadiene | 0 lbs | Carcinogen |
| Ethylene glycol | 0 lbs | - |
Seneca Gas Processing Plant · AIR-pathway site
Nearest TRI Facilities to Seneca Gas Processing Plant
Closest other reporters in Ohio - including Berne Plant, International Converter LLC, Wampum Hardware Co., ordered by distance.
Showing 8 of 1,298 other reporting facilities in Ohio.
Similar Natural Gas Processing Facilities
Other Natural Gas Processing facilities with similar total release volumes (±80%), outside Ohio - e.g. Mentone Gas Plant, Redcliff Plant, Midmar East.
Compare beyond Ohio
Nationwide peers by reported pounds & chemical count
Cross-state TRI reporters nearest Seneca Gas Processing Plant on cumulative reported pounds (22.9K lbs) and distinct chemical count (4). Release-pound peers include Ampacet Corp, Kme Corp, Phillips 66 Portland Terminal. Chemical-count peers include Hamilton Sundstrand de Puerto Rico Inc., Abb Installation Products Caribe LLC, Solenis LLC. Neighborhoods are forced disjoint so each axis surfaces a different set of sites.
Similar reported release pounds
Nearest out-of-state reporters (≥1,000 lbs) by absolute TRI pounds, not same-industry or same-county neighbors.
- Ampacet Corp Terre Haute, IN · Chemicals 22.9K lbs reported
- Kme Corp Nesquehoning, PA · Transportation Equipment 22.9K lbs reported
- Phillips 66 Portland Terminal Portland, OR · Petroleum Bulk Terminals 22.9K lbs reported
- National Manufacturing Co Inc Chatham, NJ · Fabricated Metals 22.9K lbs reported
Similar chemical count
Nearest out-of-state reporters by distinct Form-R chemicals (deduped against the release-pound neighborhood).
- Hamilton Sundstrand de Puerto Rico Inc. Santa Isabel, PR · Transportation Equipment 4 chemicals
- Abb Installation Products Caribe LLC Vega Baja, PR · Electrical Equipment 4 chemicals
- Solenis LLC Chicopee, MA · Chemicals 4 chemicals
- Adhesive Applications Inc. - O'Neill St Easthampton Easthampton, MA · Miscellaneous Manufacturing 4 chemicals
Other Marathon Petroleum Corp Facilities
Same-parent TRI sites ranked by reported releases - including Blanchard Refining Co LLC, Marathon Petroleum Co LP, Marathon Mandan Refinery.
About TRI Data
Data as of 2023 reporting year. Source: U.S. Environmental Protection Agency (EPA) Toxic Release Inventory.
On this page the largest disclosed chemicals include n-Hexane, Propylene, 1,3-Butadiene, Ethylene glycol; nearby reporters include Berne Plant. Seneca Gas Processing Plant stamps LIGHT volume · AIR pathway · CLEAN carcinogen-lbs on this Form-R extract. Totals are self-reported estimates under EPCRA §313, not measured stack emissions or a health-risk score.
Use and verify this record
This Seneca Gas Processing Plant TRI extract (LIGHT · AIR · CLEAN · lead n-Hexane) joins EPA Form-R filings with facility identity - reported pounds, not a health-risk rating.
Seneca Gas Processing Plant totals are self-reported EPCRA §313 estimates for Summerfield, OH, latest year 2023. Form-R rows span 2022–2023 (2 years). NAICS 211130 · Natural Gas Processing. 75.8% of Noble TRI pounds in this extract. Nearest ABS peer: Ampacet Corp (Δ 9 lbs). Pounds ≠ exposure.
Seneca Gas Processing Plant stamps LIGHT volume · AIR pathway · CLEAN · lead n-Hexane. PlainEnviro renders this EPA Form-R extract from its pipeline; no figure is typed in by an editor. Corrections: editorial policy.
All federal data sources used on this page
- EPA Toxics Release Inventory (TRI) Basic Data Files - annual self-reported chemical-release filings. epa.gov
- EPA TRI Program reference - how chemicals and reported releases are counted. epa.gov
- EPA Facility Registry Service - facility location and identity. epa.gov
- EPA ECHO - regulatory and compliance context. epa.gov
- EPA Envirofacts - the EPA data warehouse exposing these datasets. epa.gov