# Matheson - LEMONT PLANT (MATHESON TRI-GAS INC): 440,482 tCO2e in 2023

**Score:** 75/100

| Field | Value |
|---|---|
| Facility | Matheson - LEMONT PLANT |
| Parent company | MATHESON TRI-GAS INC |
| Sector | Chemicals |
| Address | 810 E 135TH ST, Romeoville, IL, 60446 |
| NAICS | 325120 |
| Reporting year | 2023 |
| Total tCO2e | 440,482 |
| Prior-year tCO2e | 395,706 |
| Change | +11.3% |

## Why this score
- Over 100,000 tCO2e a year.
- Emissions up 11.3% year over year.
- Parent company on record.

Source: U.S. EPA Greenhouse Gas Reporting Program (GHGRP) via Envirofacts (https://ghgdata.epa.gov/ghgp/service/facilityDetail/2023?id=1002044&ds=E&et=&popup=true). Last refreshed: 2026-11-03T01:39:43.268Z.
From EPA's Greenhouse Gas Reporting Program as published in Envirofacts. Facilities self-report; totals cover direct emissions in CO2-equivalent for the latest published reporting year. Reported emissions are not findings of any violation.