4,4'-Isopropylidenediphenol
4,4'-Isopropylidenediphenol at Howmet Castings & Services INC have more than three-quarters since 2010 (through 2024).
TRI facility · TRI 2024 reporting year
Howmet Castings & Services INC
Total reported releases 30k lb rose by an order of magnitude year over year (+1009%). Total releases concentrations have more than halved since 2010.
ONE HOWMET DR, Hampton, Virginia · 331529 · Primary Metals · operated by Howmet Aerospace INC
Anomaly engine
Notable Signals
Nitric acid
Nitric acid at Howmet Castings & Services INC have more than three-quarters since 2010 (through 2024).
Total reported releases
Total reported releases at Howmet Castings & Services INC have more than three-quarters since 2010 (through 2024).
Chemicals reported · most recent year
What This Facility Releases
Aluminum (fume or dust)
Aluminum (fume or dust) concentrations have fallen 34% since 2016.
Nickel
Nickel concentrations have more than doubled since 2010.
Nitric acid
Nitric acid concentrations have more than halved since 2010.
Hydrogen fluoride
Hydrogen fluoride concentrations have more than halved since 2010.
Chromium
Chromium concentrations are up 81% since 2010.
Cobalt
Cobalt concentrations are up 88% since 2010.
4,4'-Isopropylidenediphenol
4,4'-Isopropylidenediphenol concentrations have more than halved since 2010.
Equity context · ACS 2018-2022 block-group demographics
Who Lives Next To This Facility
Within 3 miles of this facility (72 Census block groups, population-weighted demographics): a population of 88,048. Why we surface this →
40.7%
Low-income
76.7%
People of color
6.0%
Under age 5
15.9%
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.