N090
N090 releases at Pacificorp Dave Johnston Plant fell from 19k lb to 0 lb (100% lower) between 2023 and 2024.
TRI facility · TRI 2024 reporting year
Pacificorp Dave Johnston Plant
Total reported releases 1.3M lb held roughly steady year over year (+4%). Total releases concentrations have fallen 25% since 2010.
1591 TANK FARM RD, Glenrock, Wyoming · 221112 · Electric Utilities · operated by Berkshire Hathaway INC
Anomaly engine
Notable Signals
N495
N495 releases at Pacificorp Dave Johnston Plant fell from 16k lb to 0 lb (100% lower) between 2023 and 2024.
Hydrogen fluoride
Hydrogen fluoride at Pacificorp Dave Johnston Plant have more than three-quarters since 2010 (through 2024).
Chemicals reported · most recent year
What This Facility Releases
Barium And Barium Compounds
Barium And Barium Compounds concentrations have fallen 23% since 2010.
Manganese And Manganese Compounds
Manganese And Manganese Compounds concentrations are up 13% since 2010.
Copper And Copper Compounds
Copper And Copper Compounds concentrations have fallen 15% since 2010.
Vanadium compounds
Vanadium compounds concentrations have fallen 30% since 2010.
Zinc compounds
Zinc compounds concentrations have fallen 16% since 2010.
Hydrogen fluoride
Hydrogen fluoride concentrations have more than halved since 2010.
Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)
Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) concentrations are up 27% since 2010.
Lead And Lead Compounds
Lead And Lead Compounds concentrations have fallen 32% since 2010.
Equity context · ACS 2018-2022 block-group demographics
Who Lives Next To This Facility
Converse County County, WY (no Census block groups within 3 miles — falling back to containing county): a population of 13,729. Why we surface this →
11.0%
Low-income
11.9%
People of color
6.7%
Under age 5
17.5%
Over age 64
Source: Census ACS 2018-2022 (5-year), county-level fallback. 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.