Marathon Petroleum Co - Floreffe Pa Asphalt Terminal – Emissions Trend
Jefferson Hills, PA · 2019–2024 · Parent: Marathon Petroleum Corp
This page assembles 6 consecutive years of EPA Toxics Release Inventory Form R filings for Marathon Petroleum Co - Floreffe Pa Asphalt Terminal, spanning 2019–2024. Each annual total aggregates on-site air emissions, surface-water discharges, land disposal, and off-site transfers reported by the facility under EPCRA Section 313, which requires disclosure whenever a listed chemical is manufactured, processed, or otherwise used above threshold quantities.
Reported releases opened at 42 in 2019 and closed at 24 in 2024 – a decrease of 43.7% over the window. The chart below stacks the four TRI release media (air, water, land, off-site) and overlays the yearly total. The top contributor by cumulative mass is Naphthalene at 141, followed by Lead And Lead Compounds at 66.
Because TRI figures are estimated, not metered, year-over-year deltas can reflect methodology revisions, ownership changes, or shifts in what a facility classifies as reportable, not only physical emission changes. Treat the trajectory as a disclosure record, and cross-reference with the EPA Enforcement and Compliance History Online (ECHO) system for the fuller regulatory picture on this petroleum facility.
Annual disclosure change
What changed: EPA TRI 2023 reporting year
- Marathon Petroleum Co - Floreffe Pa Asphalt Terminal's total reported releases fell from 37 lb in 2022 to 23 lb in 2023, based on EPA TRI filings.
- Marathon Petroleum Co - Floreffe Pa Asphalt Terminal's off-site transfers fell from 13 lb in 2022 to 0 lb in 2023, based on EPA TRI filings.
Total Releases by Category
Year-over-Year Comparison
| Year | Total | Chemicals | YoY Change |
|---|---|---|---|
| 2019 | 42 lbs | 4 | - |
| 2020 | 40 lbs | 4 | -4.5% |
| 2021 | 79 lbs | 4 | +95.5% |
| 2022 | 37 lbs | 4 | -52.7% |
| 2023 | 23 lbs | 4 | -38.2% |
| 2024 | 24 lbs | 4 | +3.0% |
Top Chemicals by Year
| Chemical | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | Total |
|---|---|---|---|---|---|---|---|
| Naphthalene | 24 | 23 | 24 | 24 | 23 | 23 | 141 |
| Lead And Lead Compounds | - | - | 52 | 13 | - | 1 | 66 |
| Lead compounds | 18 | 17 | - | - | - | - | 35 |
| Polycyclic aromatic compounds | - | - | 3 | - | - | - | 3 |
| Benzo[g,h,i]perylene | - | - | - | - | - | - | 0 |
About This Data
Trend data is sourced from the EPA Toxic Release Inventory (TRI). Facilities report annually. Release quantities are self-reported estimates. Year-over-year changes may reflect changes in production, pollution control measures, reporting methodology, or chemical thresholds.
A decrease in reported releases does not necessarily indicate improved environmental performance, as it may reflect production cutbacks, facility closures, or changes in reporting requirements. Similarly, increases may reflect expanded production rather than degraded environmental practices.
Frequently Asked Questions
Is Marathon Petroleum Co - Floreffe Pa Asphalt Terminal getting cleaner or dirtier? ▼
What time period does this trend data cover? ▼
Read our methodology - how this data is sourced, computed, and verified.