DCP MIDSTREAM LP/SHOLEM GAS PLANT — Emissions Trend

Duncan, OK · 2022–2023 · Parent: PHILLIPS 66

This page assembles 2 consecutive years of EPA Toxics Release Inventory Form R filings for DCP MIDSTREAM LP/SHOLEM GAS PLANT, spanning 2022–2023. 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 7.1K in 2022 and closed at 28.6K in 2023 — a increasing of +304.7% 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 Formaldehyde at 18.0K, followed by Cyclohexane at 6.6K.

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 natural gas processing facility.

Overall Trend
↑ Increasing (+304.7%)
2022 Total
7.1K lbs
2023 Total
28.6K lbs

Total Releases by Category

Air
Water
Land
Offsite Transfer
05.7K11.4K17.1K22.9K28.6K 20222023 Pounds Released

Year-over-Year Comparison

Year Total Chemicals YoY Change
2022 7.1K lbs 7
2023 28.6K lbs 8 +304.7%

Top Chemicals by Year

Chemical 20222023 Total
Formaldehyde 18.0K 18.0K
Cyclohexane 2.9K 3.7K 6.6K
n-Hexane 1.5K 4.5K 6.0K
Methanol 920 519 1.4K
Benzene 633 686 1.3K
Toluene 570 597 1.2K
Ethylbenzene 530 571 1.1K
Xylene (mixed isomers) 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 DCP MIDSTREAM LP/SHOLEM GAS PLANT getting cleaner or dirtier?
Based on EPA TRI data from 2022–2023, DCP MIDSTREAM LP/SHOLEM GAS PLANT's total toxic releases have increased by approximately 305%.
What time period does this trend data cover?
This page shows 2 years of EPA Toxic Release Inventory data from 2022–2023. Release quantities are self-reported estimates filed annually by the facility.