EPA TRI Facility · Nonmetallic Mineral Product
Sunrock Industries LLC - Mdc
Durham, NC · Parent: The Sunrock Group Inc
- Total releases
- 610 lbs
- Chemicals reported
- 4
- Carcinogens
- 1
- Primary pathway
- Air Releases
AIR Form-R mix
Sunrock Industries LLC - Mdc: how the 610 lbs splits
610 lbs across all reported pathways
- Air Releases 610 lbs 100.0%
- Land Disposal 0 lbs <0.1%
Sunrock Industries LLC - Mdc's 610 lbs Form-R total is AIR - air releases is 100.0% of the bar. Next segment: land disposal at <0.1%. Leading chemical by pounds: Lead And Lead Compounds.
TRACE volume AIR pathway CARC-MID
Sunrock Industries LLC - Mdc is an EPA Toxics Release Inventory reporter in Durham, NC, in the nonmetallic mineral product sector. It reported 160 lbs of releases across 4 chemicals in 2023, and 610 lbs in total across its 2021-2023 reporting years. That ranks 14,514 of 25,986 TRI facilities nationwide by cumulative reported pounds, counting each facility over however many years it has filed. In North Carolina's 787 reporting TRI sites, pounds #1 is not chemical-count #1. Sunrock Industries LLC - Mdc is pounds #456 and chemical-count #219 at 610 lbs. Befesa Zinc Metal LLC leads reported pounds (43.1M lbs) at 4 chemicals (chemical-count #158). Pcs Phosphate Co Inc leads chemical count at 29 chemicals (22.9M lbs, pounds #2). Reported volume rose against 2022. Pounds reported are not a measure of toxicity or health risk. Nearest other TRI reporters: Argos Ready Mix Plum St Concrete Plant; Brenntag Mid-South; Ips Structural Adhesives Inc.; Aisin North Carolina Corp. Similar-scale Nonmetallic Mineral Product peers outside North Carolina: James Hardie Building Products Summerville; O-N Minerals (chemstone) Winchester Lime Plant; Knife River Albertville Ready Mix; Smyrna Ready Mix Concrete LLC - Quivas Ready Mix. Other The Sunrock Group Inc sites in this extract: Sunrock Industries LLC - Rdu; Sunrock Industries LLC - North Raleigh; Sunrock Industries LLC - Butner; Sunrock Industries LLC - Kittrell. Largest disclosed chemicals by pounds: Lead And Lead Compounds; Polycyclic aromatic compounds; Mercury And Mercury Compounds; Nitrate compounds (water dissociable; reportable only when in aqueous solution).
Sunrock Industries LLC - Mdc stamps TRACE volume with a dominant AIR pathway (100.0% air releases) across 4 chemicals · 1 carcinogen-classified. Cumulative Form-R extract: 610 lbs (2021–2023). All figures are self-reported EPCRA §313 estimates, not measured stack emissions or a health-risk score. Scale peers include James Hardie Building Products Summerville and O-N Minerals (chemstone) Winchester Lime Plant.
Sunrock Industries LLC - Mdc vs. every reporting TRI facility
Cumulative reported release pounds, with this facility marked in the national distribution
610 lbs 44th percentile higher than 44% of 25,986 reporting TRI facilities
Each bar is a $1M-wide band; taller bars hold more reporting TRI facilities. The dashed line and filled bar mark this facility. Hover, focus, or tap a bar for its full count, share, and position.
Source U.S. Environmental Protection Agency, Toxics Release Inventory · 2023 reporting year
Sunrock Industries LLC - Mdc in the Nonmetallic Mineral Product sector extract
Among the 3,265 Nonmetallic Mineral Product facilities in this database, Sunrock Industries LLC - Mdc reports the 689th-largest volume, placing it in the top 21.1% of its sector. Scale peers outside North Carolina include James Hardie Building Products Summerville and O-N Minerals (chemstone) Winchester Lime Plant.
Sector rank uses reported TRI pounds only. Share callouts need ≥1,000 lbs so tiny totals cannot mint a false signal.
Annual disclosure change
What changed: EPA TRI 2023 reporting year
- Sunrock Industries LLC - Mdc's total reported releases rose from 105 lb in 2022 to 160 lb in 2023, based on EPA TRI filings.
- Sunrock Industries LLC - Mdc's air releases rose from 105 lb in 2022 to 160 lb in 2023, based on EPA TRI filings.
- Sunrock Industries LLC - Mdc's chemicals reported rose from 3 in 2022 to 4 in 2023, based on EPA TRI filings.
Sunrock Industries LLC - Mdc Form-R facts
Compare this facility
See how Sunrock Industries LLC - Mdc stacks up against nearby facilities and the typical reporter.
10172.7× more than the comparison
4.0× more than the comparison
Comparison reflects reported pounds and chemical counts, not toxicity or health risk. Averages cover facilities reporting any release.
How does this facility release toxic chemicals?
How Sunrock Industries LLC - Mdc releases toxic chemicals into the environment. Total: 610 lbs.
Emissions Trend Summary
From 2021 to 2023, total releases decreased by 54% (345 lbs to 160 lbs).
Sunrock Industries LLC - Mdc: annual Form-R pounds
TRACE site · AIR pathway · TRI years 2021–2023
- 2021 0
- 2022 0
- 2023 0
What this shows Sunrock Industries LLC - Mdc year-over-year reported totals (decreased by 54% from 2021 to 2023). TRI figures are self-reported estimates and can swing with production, waste handling, and reporting changes, not only with controls. Lead chemical in the extract: Lead And Lead Compounds.
| Year | Total | Chemicals |
|---|---|---|
| 2021 | 345 lbs | 4 |
| 2022 | 105 lbs | 3 |
| 2023 | 160 lbs | 4 |
Chemical Releases
Aggregated across all reporting years (2021–2023). 1 of 4 chemicals are carcinogens. Sorted by total release volume.
| Chemical | Total | Flags |
|---|---|---|
| Lead And Lead Compounds | 434 lbs | - |
| Polycyclic aromatic compounds | 174 lbs | Carcinogen |
| Mercury And Mercury Compounds | 2 lbs | - |
| Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 0 lbs | - |
Sunrock Industries LLC - Mdc · AIR-pathway site
Nearest TRI Facilities to Sunrock Industries LLC - Mdc
Closest other reporters in North Carolina - including Argos Ready Mix Plum St Concrete Plant, Brenntag Mid-South, Ips Structural Adhesives Inc., ordered by distance.
Showing 8 of 786 other reporting facilities in North Carolina.
Similar Nonmetallic Mineral Product Facilities
Other Nonmetallic Mineral Product facilities with similar total release volumes (±80%), outside North Carolina - e.g. James Hardie Building Products Summerville, O-N Minerals (chemstone) Winchester Lime Plant, Knife River Albertville Ready Mix.
Other The Sunrock Group Inc Facilities
Same-parent TRI sites ranked by reported releases - including Sunrock Industries LLC - Rdu, Sunrock Industries LLC - North Raleigh, Sunrock Industries LLC - Butner.
About TRI Data
Data as of 2023 reporting year. Source: U.S. Environmental Protection Agency (EPA) Toxic Release Inventory.
On this page the largest disclosed chemicals include Lead And Lead Compounds, Polycyclic aromatic compounds, Mercury And Mercury Compounds, Nitrate compounds (water dissociable; reportable only when in aqueous solution); nearby reporters include Argos Ready Mix Plum St Concrete Plant. Sunrock Industries LLC - Mdc stamps TRACE volume · AIR pathway · CARC-MID carcinogen-lbs on this Form-R extract. Totals are self-reported estimates under EPCRA §313, not measured stack emissions or a health-risk score.
Use and verify this record
This Sunrock Industries LLC - Mdc TRI extract (TRACE · AIR · CARC-MID · lead Lead And Lead Compounds) joins EPA Form-R filings with facility identity - reported pounds, not a health-risk rating.
Sunrock Industries LLC - Mdc totals are self-reported EPCRA §313 estimates for Durham, NC, latest year 2023. Form-R rows span 2021–2023 (3 years). NAICS 327320 · Nonmetallic Mineral Product. 0.1% of Durham TRI pounds in this extract. Nearest ABS peer: Redman Equipment & Manufacturing Co (Δ 1 lbs). Pounds ≠ exposure.
Sunrock Industries LLC - Mdc stamps TRACE volume · AIR pathway · CARC-MID · lead Lead And Lead Compounds. PlainEnviro renders this EPA Form-R extract from its pipeline; no figure is typed in by an editor. Corrections: editorial policy.
All federal data sources used on this page
- EPA Toxics Release Inventory (TRI) Basic Data Files - annual self-reported chemical-release filings. epa.gov
- EPA TRI Program reference - how chemicals and reported releases are counted. epa.gov
- EPA Facility Registry Service - facility location and identity. epa.gov
- EPA ECHO - regulatory and compliance context. epa.gov
- EPA Envirofacts - the EPA data warehouse exposing these datasets. epa.gov