Discovery Energy LLC
4 facilities · 2 states · 26.9K lbs total releases
According to the EPA Toxics Release Inventory, Discovery Energy LLC is the reported parent of 4 Form R facilities across 2 states, disclosing 26.9K lbs of toxic releases. 2 of 9 reported chemicals carry a carcinogen classification in the TRI extract. The heaviest-reporting state by release volume is Mississippi (25.8K lbs). Those TRI figures remain self-reported disclosure pounds for Discovery Energy LLC, including carcinogen-flagged substances, not a measured public-health risk score.
Release-over-release change
What changed for Discovery Energy LLC: EPA TRI 2023 reporting year
Same facilities, both years
-61.4%
4 facilities that filed in 2022 and 2023
Whole inventory
-61.4%
9.3 thousand lb → 3.6 thousand lb, every facility that filed
- Discovery Energy LLC's total reported releases fell from 9.3 thousand lb in 2022 to 3.6 thousand lb in 2023, based on EPA TRI filings.
- Discovery Energy LLC's off-site transfers fell from 9.3 thousand lb in 2022 to 3.6 thousand lb in 2023, based on EPA TRI filings.
- Discovery Energy LLC's air releases fell from 50 lb in 2022 to 20 lb in 2023, based on EPA TRI filings.
TRI parent disclosure trail
Read Discovery Energy LLC from filing to facility
Largest Form R sites under this parent: Rehlko - Hattiesburg Engine Plant No. 1; Rehlko-Mosel; Rehlko-Saukville; Rehlko - Hattiesburg Engine Plant No. 2. Neighbor parents on the disclosure ladder: Tronox Ltd; The Chemours Co. Largest disclosed chemicals by pounds: Copper; Ethylene glycol; Chromium; Nickel; Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region). Heaviest-reporting states in this extract: Mississippi; Wisconsin. Industry labels on the parent rollup: Machinery; Electrical Equipment; Fabricated Metals. Start from those named sites and neighbors rather than a generic parent blurb; pounds stay disclosure, not risk.
Largest Form R sites under this parent: Rehlko - Hattiesburg Engine Plant No. 1; Rehlko-Mosel; Rehlko-Saukville; Rehlko - Hattiesburg Engine Plant No. 2. Neighbor parents on the disclosure ladder: Tronox Ltd; The Chemours Co. Largest disclosed chemicals by pounds: Copper; Ethylene glycol; Chromium; Nickel; Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region). Heaviest-reporting states in this extract: Mississippi; Wisconsin. Industry labels on the parent rollup: Machinery; Electrical Equipment; Fabricated Metals.
Discovery Energy LLC ranks #2,308 of 4,988 slug-merged TRI parents, a smaller disclosed-volume parent relative to the national Form R parent set. Discovery Energy LLC files across 2 states, a regional parent portfolio rather than a single-state discloser. Releases are facility-concentrated: Rehlko - Hattiesburg Engine Plant No. 1 accounts for most of Discovery Energy LLC's disclosed pounds, so peer comparisons should weight that site, not an even portfolio average.
Parent aggregation for Discovery Energy LLC follows facility-reported names. Compare the named neighbors (Tronox Ltd; The Chemours Co) before treating rank as a hazard score; TRI stays self-reported and unweighted by toxicity.
Where Discovery Energy LLC sits among TRI parents
Discovery Energy LLC sits on a disclosure ladder beside Tronox Ltd and The Chemours Co. Open those parents for a different facility count, state span, and chemical mix.
Higher disclosed volume
- Tronox Ltd · rank #2,306 · 64.0M lbs
- The Chemours Co · rank #2,307 · 59.1M lbs
Largest chemicals disclosed by Discovery Energy LLC
Copper; Ethylene glycol; Chromium; Nickel; Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region) lead the Form R pound rollup for this parent, including filings such as Rehlko - Hattiesburg Engine Plant No. 1. Pound totals, not toxicity-weighted risk.
| Chemical | Disclosed lbs |
|---|---|
| Copper | 24.3K lbs |
| Ethylene glycol | 875 lbs |
| Chromium | 565 lbs |
| Nickel | 495 lbs |
| Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region) | 450 lbs |
Where does this company operate?
| State | Facilities | Total Releases |
|---|---|---|
| Mississippi | 2 | 25.8K lbs |
| Wisconsin | 2 | 1.1K lbs |
Facilities (4)
| Facility | Releases |
|---|---|
| Rehlko - Hattiesburg Engine Plant No. 1 Hattiesburg, MS | 25.8K lbs |
| Rehlko-Mosel Sheboygan, WI | 1.0K lbs |
| Rehlko-Saukville Saukville, WI | 100 lbs |
| Rehlko - Hattiesburg Engine Plant No. 2 Hattiesburg, MS | 0 lbs |
Frequently Asked Questions
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Compare beyond the release ladder
Nationwide peers by disclosed pounds & facility count
Cross-portfolio TRI parents nearest Discovery Energy LLC on total disclosed release pounds (26.9K lbs) and reporting facility count (4). Release-volume peers include W L Gore & Associates Inc, Mannington Mills Inc, Quidelortho Corp. Facility-count peers include A Stucki Holding Corp, Advanced Heat Treat Corp, Alleima USA LLC. Neighborhoods are forced disjoint so each axis surfaces a different set of parents.
Similar disclosed release pounds
Nearest parents (≥3 facilities, ≥10k lbs) by absolute TRI disclosed pounds, not rank-adjacent ladder neighbors.
Similar facility count
Nearest parents by reporting-site count (deduped against the release-pound neighborhood).
About This Data
EPA TRI parent totals cover all media. This extract's heaviest states for the parent are Mississippi, Wisconsin; facility-reported names can vary across subsidiaries.
Source: U.S. Environmental Protection Agency, TRI Basic Data Files
What to do with Discovery Energy LLC's TRI parent record
From Discovery Energy LLC, open Rehlko - Hattiesburg Engine Plant No. 1 or compare against Tronox Ltd rather than reading rank alone.
- Open the largest Form R site for Discovery Energy LLC (Rehlko - Hattiesburg Engine Plant No. 1 in MS). Largest facility
- Compare against The Chemours Co, the next-higher disclosed-volume parent. Higher-volume parent
- Browse the full parent release ranking to see where Discovery Energy LLC sits among all slug-merged TRI parents. All parent companies
Rank and peers (Tronox Ltd, The Chemours Co) are disclosure volume only, not toxicity-weighted risk or enforcement status.
Use and verify this record
Discovery Energy LLC's record groups disclosed TRI parent-company filings so readers can compare reporting context without treating the total as a measure of risk.
Company release figures are computed directly from EPA Toxic Release Inventory data; source names and the record-linking method are documented in the methodology.
Primary sources
- EPA Toxics Release Inventory Basic Data Files - annual facility-level chemical-release disclosures
PlainEnviro renders public EPA records directly from its data pipeline; no figure on this page is typed in by an editor. See the editorial standards and corrections policy for how source changes and reported errors are handled.