Nitrate compounds (water dissociable; reportable only when in aqueous solution)
Nitrate compounds (water dissociable; reportable only when in aqueous solution) releases at Allvac Richburg Plant rose from 4k lb to 29k lb (6.8×) between 2023 and 2024.
TRI facility · TRI 2024 reporting year
Allvac Richburg Plant
Total reported releases 176k lb rose by an order of magnitude year over year (+4031%). Total releases concentrations are up 19% since 2013.
4374 LANCASTER HWY 9, Richburg, South Carolina · 331491 · Primary Metals · operated by Ati INC
Anomaly engine
Notable Signals
Nitrate compounds (water dissociable; reportable only when in aqueous solution)
Nitrate compounds (water dissociable; reportable only when in aqueous solution) at Allvac Richburg Plant have more than three-quarters since 2013 (through 2024).
Chemicals reported · most recent year
What This Facility Releases
Chromium
Chromium concentrations have more than doubled since 2018.
Nickel
Nickel volumes here are too small to anchor a multi-year trend; YoY movement is still shown above.
Nitrate compounds (water dissociable; reportable only when in aqueous solution)
Nitrate compounds (water dissociable; reportable only when in aqueous solution) concentrations have more than halved since 2013.
Manganese
Manganese volumes here are too small to anchor a multi-year trend; YoY movement is still shown above.
Cobalt
Cobalt volumes here are too small to anchor a multi-year trend; YoY movement is still shown above.
Hydrogen fluoride
Hydrogen fluoride concentrations are roughly unchanged from 2022.
Nitric acid
Nitric acid concentrations are up 19% since 2010.
Equity context · ACS 2018-2022 block-group demographics
Who Lives Next To This Facility
Within 3 miles of this facility (1 Census block groups, population-weighted demographics): a population of 1,161. Why we surface this →
48.7%
Low-income
49.8%
People of color
6.2%
Under age 5
17.1%
Over age 64
Source: Census ACS 2018-2022 block-group demographics, population-weighted across the 3-mile buffer around this facility (from USEPA-clone/EJAM-open blockgroupstats). Indicator-level percentile and EJ-disparity scores are surfaced on the county page and the state page — they describe wider regional exposure burdens, not effects attributable to a single facility.
Source. EPA Toxics Release Inventory · retrieved 2026-05-07. Reporting year 2024. TRI is a federal public-domain dataset under 17 USC §105.
What this is not. TRI quantifies releases reported by the facility under EPCRA §313 — not ambient air or water concentrations measured at receptors. We do not attribute individual health outcomes to specific facilities; that exceeds what the data can support.