Sdw Holdings Corp
3 facilities · 2 states · 16.4M lbs total releases
According to the EPA Toxics Release Inventory, Sdw Holdings Corp is the reported parent of 3 Form R facilities across 2 states, disclosing 16.4M lbs of toxic releases. 7 of 56 reported chemicals carry a carcinogen classification in the TRI extract. The heaviest-reporting state by release volume is Maine (11.0M lbs). Those TRI figures remain self-reported disclosure pounds for Sdw Holdings Corp, including carcinogen-flagged substances, not a measured public-health risk score.
Release-over-release change
What changed for Sdw Holdings Corp: EPA TRI 2023 reporting year
Same facilities, both years
-20.6%
3 facilities that filed in 2022 and 2023
Whole inventory
-20.6%
4.1 million lb → 3.3 million lb, every facility that filed
- Sdw Holdings Corp's total reported releases fell from 4.1 million lb in 2022 to 3.3 million lb in 2023, based on EPA TRI filings.
- Sdw Holdings Corp's off-site transfers fell from 1.1 million lb in 2022 to 474.6 thousand lb in 2023, based on EPA TRI filings.
- Sdw Holdings Corp's air releases fell from 1.3 million lb in 2022 to 1.1 million lb in 2023, based on EPA TRI filings.
- Sdw Holdings Corp's chemicals reported fell from 29 in 2022 to 27 in 2023, based on EPA TRI filings.
TRI parent disclosure trail
Read Sdw Holdings Corp from filing to facility
Largest Form R sites under this parent: Sappi N.a. Inc. - Somerset Operations; Sappi Cloquet LLC; Sappi N.a. - Westbrook Operations. Neighbor parents on the disclosure ladder: Nd Paper LLC; McCain Foods USA Inc. Largest disclosed chemicals by pounds: Methanol; Zinc compounds; Ammonia; Manganese compounds; Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size). Heaviest-reporting states in this extract: Maine; Minnesota. Industry labels on the parent rollup: Paper. Start from those named sites and neighbors rather than a generic parent blurb; pounds stay disclosure, not risk.
Source: U.S. Environmental Protection Agency, TRI Basic Data Files Toxics Release Inventory (TRI) · August 2026
Largest Form R sites under this parent: Sappi N.a. Inc. - Somerset Operations; Sappi Cloquet LLC; Sappi N.a. - Westbrook Operations. Neighbor parents on the disclosure ladder: Nd Paper LLC; McCain Foods USA Inc. Largest disclosed chemicals by pounds: Methanol; Zinc compounds; Ammonia; Manganese compounds; Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size). Heaviest-reporting states in this extract: Maine; Minnesota. Industry labels on the parent rollup: Paper.
Sdw Holdings Corp ranks #103 of 4,988 slug-merged TRI parents by disclosed release pounds, mid-to-upper among parents, not a top-25 volume name. Sdw Holdings Corp files across 2 states, a regional parent portfolio rather than a single-state discloser. Sdw Holdings Corp's disclosed pounds are spread across 3 facilities, no single site dominates the parent total in this extract.
Parent aggregation for Sdw Holdings Corp follows facility-reported names. Compare the named neighbors (Nd Paper LLC; McCain Foods USA Inc) before treating rank as a hazard score; TRI stays self-reported and unweighted by toxicity.
Where Sdw Holdings Corp sits among TRI parents
Sdw Holdings Corp sits on a disclosure ladder beside Nd Paper LLC and McCain Foods USA Inc. Open those parents for a different facility count, state span, and chemical mix.
Lower disclosed volume
- Nd Paper LLC · rank #104 · 10.3M lbs
- McCain Foods USA Inc · rank #105 · 9.4M lbs
Largest chemicals disclosed by Sdw Holdings Corp
Methanol; Zinc compounds; Ammonia; Manganese compounds; Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) lead the Form R pound rollup for this parent, including filings such as Sappi N.a. Inc. - Somerset Operations. Pound totals, not toxicity-weighted risk.
| Chemical | Disclosed lbs |
|---|---|
| Methanol | 5.7M lbs |
| Zinc compounds | 5.3M lbs |
| Ammonia | 2.9M lbs |
| Manganese compounds | 1.6M lbs |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 737.0K lbs |
Where does this company operate?
| State | Facilities | Total Releases |
|---|---|---|
| Maine | 2 | 11.0M lbs |
| Minnesota | 1 | 5.4M lbs |
Facilities (3)
| Facility | Releases |
|---|---|
| Sappi N.a. Inc. - Somerset Operations Skowhegan, ME | 10.6M lbs |
| Sappi Cloquet LLC Cloquet, MN | 5.4M lbs |
| Sappi N.a. - Westbrook Operations Westbrook, ME | 457.3K 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 Sdw Holdings Corp on total disclosed release pounds (16.4M lbs) and reporting facility count (3). Release-volume peers include Alcoa Corp, Quikrete Holdings, Westlake Corp. Facility-count peers include A-Gas US Holdings Inc, Abb Holdings Inc, Adams Resources & Energy Inc. 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 Maine, Minnesota; facility-reported names can vary across subsidiaries.
Source: U.S. Environmental Protection Agency, TRI Basic Data Files
What to do with Sdw Holdings Corp's TRI parent record
From Sdw Holdings Corp, open Sappi N.a. Inc. - Somerset Operations or compare against Nd Paper LLC rather than reading rank alone.
- Open the largest Form R site for Sdw Holdings Corp (Sappi N.a. Inc. - Somerset Operations in ME). Largest facility
- Compare against Nd Paper LLC, the next-lower disclosed-volume parent. Lower-volume parent
- Browse the full parent release ranking to see where Sdw Holdings Corp sits among all slug-merged TRI parents. All parent companies
Rank and peers (Nd Paper LLC, McCain Foods USA Inc) are disclosure volume only, not toxicity-weighted risk or enforcement status.
Use and verify this record
Sdw Holdings Corp'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.