Non-Compliance
TRI Reporter
Clean Air Act
Clean Water Act
RCRA
ASH GROVE CEMENT CO - MONTANA CITY PLANT
Quick Summary
- •Released 20,961 lbs of toxic chemicals to the environment in the most recent TRI reporting year.
- •Currently out of compliance in at least one environmental program (CAA, CWA, or RCRA).
- •Assessed $0 in total penalties since records began.
- Address
-
100 MT HWY 518
CLANCY, MT 59634
View on map ↗ - County
- JEFFERSON County
- Industry
- Manufacturing
- NAICS (North American Industry Classification)
- 327310
- Inspections
- 5 · last Jul 1, 2025
- Total Penalties
- $0 · last Aug 14, 2013
- Registry ID
- 110000595197
How This Compares
#19
of 55 TRI reporters in MT
#2,766
of 16,877 TRI reporters in Manufacturing
Ranked by most recent year's total TRI releases.
Compliance Status (Last 12 Quarters)
Number of calendar quarters, out of the last 12, in which this facility was in violation of its permit. Zero means no recorded violations in that program over the past three years.
0
Air (CAA)
Qtrs Non-Compliant
Qtrs Non-Compliant
1
Water (CWA)
Qtrs Non-Compliant
Qtrs Non-Compliant
0
Hazardous Waste (RCRA)
Qtrs Non-Compliant
Qtrs Non-Compliant
TRI Toxic Chemical Releases
Annual pounds of each toxic chemical released to air, water, and land, as reported to the EPA Toxic Release Inventory. Carcinogen (♦) and PFAS designations are per EPA and IARC classifications.
Emissions Trend (2015–2024)
-69% overall
| Year | Total Releases (lbs) | vs Prior Year |
|---|---|---|
| 2015 | 15,969 | — |
| 2016 | 14,170 | -11% |
| 2017 | 20,961 | +48% |
| 2018 | 18,627 | -11% |
| 2020 | 16,283 | — |
| 2021 | 20,294 | +25% |
| 2022 | 11,763 | -42% |
| 2023 | 7,015 | -40% |
| 2024 | 4,964 | -29% |
2024
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Lead compounds | 4,643 | 43 | 0 | 4,600 | — | |
| Chromium | 311 | 1 | — | 310 | — | |
| Mercury compounds | 10 | 10 | — | 0 | — |
2023
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Lead compounds | 6,442 | 42 | 0 | 6,400 | 1 | |
| Chromium | 561 | 1 | — | 560 | 2 | |
| Mercury compounds | 12 | 11 | — | 1 | 15 |
2022
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Lead compounds | 5,945 | 45 | — | 5,900 | — | |
| Ammonia | 4,806 | 4,806 | — | — | — | |
| Chromium | 1,002 | 2 | — | 1,000 | — | |
| Mercury compounds | 11 | 10 | — | 1 | — |
2021
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Ammonia | 12,010 | 12,010 | — | — | — | |
| Lead compounds | 7,541 | 41 | 0 | 7,500 | — | |
| Chromium | 732 | 2 | — | 730 | — | |
| Mercury compounds | 11 | 11 | — | 0 | — |
2020
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Ammonia | 9,911 | 9,908 | — | 3 | — | |
| Lead compounds | 5,639 | 39 | 0 | 5,600 | — | |
| Chromium | 722 | 2 | — | 720 | — | |
| Mercury compounds | 11 | 11 | — | 0 | — |
2018
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Lead compounds | 11,383 | 34 | 0 | 11,349 | — | |
| Ammonia | 6,737 | 6,737 | — | — | — | |
| Chromium | 500 | 1 | — | 498 | — | |
| Mercury compounds | 8 | 8 | — | 0 | — |
2017
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Lead compounds | 10,385 | 34 | — | 10,351 | — | |
| Ammonia | 7,697 | 7,697 | — | — | — | |
| Chromium compounds (except for chromite ore mined in the Transvaal Region) | 2,870 | 10 | — | 2,860 | — | |
| Mercury compounds | 9 | 8 | — | 0 | — |
2016
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Ammonia | 7,612 | 7,612 | — | — | — | |
| Lead compounds | 4,777 | 36 | — | 4,741 | — | |
| Chromium compounds (except for chromite ore mined in the Transvaal Region) | 1,773 | 11 | — | 1,762 | — | |
| Mercury compounds | 7 | 7 | — | 0 | — |
2015
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Ammonia | 11,271 | 11,271 | — | — | — | |
| Lead compounds | 2,871 | 42 | — | 2,829 | — | |
| Chromium compounds (except for chromite ore mined in the Transvaal Region) | 1,811 | 10 | — | 1,801 | — | |
| Mercury compounds | 16 | 9 | — | 7 | — |
Waste Management & Recycling
How this facility manages toxic chemicals beyond direct releases — through recycling, energy recovery, and on-site or off-site treatment. Data from the most recent TRI reporting year. Quantities in pounds.
| Chemical | Released | Recycled | Energy Recovery | Treated |
|---|
Compliance Violations
Individual permit violations recorded by the EPA across air, water, and hazardous waste programs. Open violations are unresolved as of the most recent ECHO data update.
| Program | Type | Violation Date | Return to Compliance | Status |
|---|---|---|---|---|
| cwa | Reporting Violations - Improper/ Incorrect Reporting | Jul 27, 2021 | Jan 24, 2022 | Resolved |
| cwa | WW Storm Water Non-Construction - Failure to Maintain Records | Jul 27, 2021 | Nov 10, 2021 | Resolved |
| cwa | Monitoring Violations - Invalid/Unrepresentative Sample | Jul 27, 2021 | Jan 24, 2022 | Resolved |
| cwa | WW Storm Water Non-Construction - Failure to Conduct Inspections | Jul 27, 2021 | Nov 10, 2021 | Resolved |
| cwa | Management Practice Violations - Improper Operation and Maintenance | Jul 27, 2021 | Jan 24, 2022 | Resolved |
| cwa | WW Storm Water Non-Construction - Failure to properly operate and maintain BMPs | Jul 27, 2021 | Nov 10, 2021 | Resolved |
| cwa | WW Storm Water Non-Construction - Failure to properly install/implement BMPs | Jul 27, 2021 | Nov 10, 2021 | Resolved |
| cwa | Schedule Event unachieved and not reported | Nov 1, 2012 | Dec 13, 2012 | Resolved |
| cwa | Schedule Event reported late | Nov 1, 2012 | — | Open |
| cwa | Schedule Event achieved late but reported | Nov 1, 2012 | — | Open |
| cwa | Schedule Event unachieved but reported | Nov 1, 2012 | Dec 13, 2012 | Resolved |
| cwa | Schedule Event achieved late but reported | Mar 23, 2011 | — | Open |
| rcra | Standards for Used Oil: Generators | Mar 6, 2000 | Mar 22, 2000 | Resolved |
Discharge Limit Exceedances
Instances where this facility's reported discharge monitoring results exceeded its permitted limits under the Clean Water Act. Exceedance percentage shows how far over the permit limit the discharge was.
| Pollutant | Violation | Reported | Limit | Exceedance | Period | Status |
|---|---|---|---|---|---|---|
| Solids, total suspended | DMR, Limited - Numeric Violation | 58.00 mg/L | 50.00 | +16% | Apr 2018 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 58.00 mg/L | 50.00 | +16% | Apr 2018 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 136.00 mg/L | 50.00 | +172% | Nov 2017 | Resolved |
| Solids, total suspended | DMR, Limited - Numeric Violation | 136.00 mg/L | 50.00 | +172% | Nov 2017 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 130.00 mg/L | 50.00 | +160% | Jul 2017 | Resolved |
| Solids, total suspended | DMR, Limited - Numeric Violation | 130.00 mg/L | 50.00 | +160% | Jul 2017 | Open |
Enforcement Actions
Formal enforcement cases brought by the EPA or state agencies, including administrative orders and civil penalties assessed. Penalty amounts reflect what was formally assessed, not necessarily what was collected.
Judicial
· Case 08-2010-0209
Judicial
· Case 08-2010-0208 · Aug 14, 2013
$452,671
WRITTEN INFORMAL
RCRA (Hazardous Waste)
· Case RCRA-MTD986067825-000 · Mar 17, 2000
Other facilities in JEFFERSON County, MT
LEWIS AND CLARK CAVERNS CAMPGROUND
WHITEHALL, MT
STONEY BROOK VILLAGE CONDOMINIUM ASSOC
CLANCY, MT
TROUT UNLIMITED FISH CREEK 318 PERMIT
WHITEHALL, MT
LOST DUNKIN MINE PIPESTONE CREEK
WHITEHALL, MT
RAVEN RIDGE SUBDIVISION
CLANCY, MT
KNOWLTON PLACER
BOULDER, MT