Total reported releases
Total reported releases at Calportland CO Rillito Plant have more than three-quarters since 2010 (through 2024).
TRI facility · TRI 2024 reporting year
Calportland CO Rillito Plant
Total reported releases 547 lb fell modestly year over year (-14%). Total releases concentrations have more than halved since 2010.
11115 N CASA GRANDE HWY, Rillito, Arizona · 327310 · Nonmetallic Mineral Product · operated by Taiheiyo Cement USA INC
Anomaly engine
Notable Signals
Chemicals reported · most recent year
What This Facility Releases
Ammonia
Ammonia concentrations have more than halved since 2019.
Lead And Lead Compounds
Lead And Lead Compounds concentrations have more than doubled since 2010.
Mercury And Mercury Compounds
Mercury And Mercury Compounds concentrations have more than halved since 2010.
Methanol
Methanol concentrations have fallen 23% since 2017.
Equity context · ACS 2018-2022 block-group demographics
Who Lives Next To This Facility
Within 3 miles of this facility (7 Census block groups, population-weighted demographics): a population of 11,159. Why we surface this →
12.1%
Low-income
35.2%
People of color
4.9%
Under age 5
25.2%
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.