Benzene
Benzene releases at Shell Chemical Appalachia LLC fell from 17k lb to 3k lb (81% lower) between 2023 and 2024.
TRI facility · TRI 2024 reporting year
Shell Chemical Appalachia LLC
Total reported releases 292k lb fell sharply year over year (-58%). Total releases concentrations have more than halved since 2010.
300 FRANKFORT RD, Monaca, Pennsylvania · 331492 · Primary Metals · operated by Shell Petroleum INC
Anomaly engine
Notable Signals
Ethylene
Ethylene releases at Shell Chemical Appalachia LLC fell from 526k lb to 166k lb (68% lower) between 2023 and 2024.
Zinc compounds
Zinc compounds at Shell Chemical Appalachia LLC have more than three-quarters since 2010 (through 2024).
Total reported releases
Total reported releases at Shell Chemical Appalachia LLC have more than three-quarters since 2010 (through 2024).
Chemicals reported · most recent year
What This Facility Releases
Ethylene
Ethylene concentrations have more than halved since 2022.
Ammonia
Ammonia concentrations are up 41% since 2022.
Propylene
Propylene concentrations have fallen 41% since 2022.
1,3-Butadiene
1,3-Butadiene concentrations have more than halved since 2022.
Toluene
Toluene concentrations have fallen 45% since 2022.
Benzene
Benzene concentrations have more than halved since 2022.
Zinc compounds
Zinc compounds concentrations have more than halved since 2010.
Xylene (mixed isomers)
Xylene (mixed isomers) concentrations have more than halved since 2022.
Equity context · ACS 2018-2022 block-group demographics
Who Lives Next To This Facility
Within 3 miles of this facility (17 Census block groups, population-weighted demographics): a population of 25,511. Why we surface this →
15.3%
Low-income
7.0%
People of color
4.5%
Under age 5
23.0%
Over age 64
Source: Census ACS 2018-2022 block-group demographics, population-weighted across the 3-mile buffer around this facility (from USEPA-clone/EJAM-open blockgroupstats). Indicator-level percentile and EJ-disparity scores are surfaced on the county page and the state page — they describe wider regional exposure burdens, not effects attributable to a single facility.
Source. EPA Toxics Release Inventory · retrieved 2026-05-07. Reporting year 2024. TRI is a federal public-domain dataset under 17 USC §105.
What this is not. TRI quantifies releases reported by the facility under EPCRA §313 — not ambient air or water concentrations measured at receptors. We do not attribute individual health outcomes to specific facilities; that exceeds what the data can support.