Non-Compliance
TRI Reporter
Clean Air Act
Clean Water Act
RCRA
HEIDELBERG MATERIALS US CEMENT LLC
Quick Summary
- •Released 37,417 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 $197,500 in total penalties since records began.
- •Reports releases of chemicals classified as known or probable carcinogens.
- Address
-
700 25TH ST NW
MASON CITY, IA 50401
View on map ↗ - County
- CERRO GORDO County
- Industry
- Manufacturing
- NAICS (North American Industry Classification)
- 327310
- Inspections
- 12 · last May 21, 2025
- Total Penalties
- $197,500 · last Nov 17, 2021
- Registry ID
- 110000767705
How This Compares
#75
of 420 TRI reporters in IA
#1,989
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.
9
Air (CAA)
Qtrs Non-Compliant
Qtrs Non-Compliant
11
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 | 47,098 | — |
| 2016 | 45,118 | -4% |
| 2017 | 37,417 | -17% |
| 2018 | 4,798 | -87% |
| 2020 | 10,312 | — |
| 2021 | 7,439 | -28% |
| 2022 | 7,187 | -3% |
| 2023 | 18,066 | +151% |
| 2024 | 14,424 | -20% |
2024
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Aluminum (fume or dust) | 8,040 | 8,040 | — | — | — | |
| Ammonia | 6,146 | 6,146 | — | — | — | |
| Lead compounds | 76 | 19 | — | 58 | 17 | |
| Manganese compounds | 56 | 56 | — | — | 455 | |
| Chromium compounds (except for chromite ore mined in the Transvaal Region) | 38 | 13 | — | 25 | 6,172 | |
| Nickel compounds | 36 | 23 | — | 13 | 287 | ♦ Carcinogen |
| Arsenic compounds | 17 | 6 | — | 11 | 17 | ♦ Carcinogen |
| Cadmium compounds | 12 | 6 | — | 6 | — | ♦ Carcinogen |
| Mercury compounds | 3 | 3 | — | — | — | |
| Dioxin and dioxin-like compounds | 0 | 0 | — | — | — | ♦ Carcinogen |
2023
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Aluminum (fume or dust) | 8,416 | 8,416 | — | — | — | |
| Ammonia | 6,424 | 6,424 | — | — | — | |
| Lead compounds | 1,577 | 15 | — | 1,562 | 79 | |
| Chromium compounds (except for chromite ore mined in the Transvaal Region) | 695 | 14 | — | 681 | 20,839 | |
| Nickel compounds | 392 | 26 | — | 366 | 1,279 | ♦ Carcinogen |
| Arsenic compounds | 307 | 8 | — | 299 | 79 | ♦ Carcinogen |
| Cadmium compounds | 178 | 7 | — | 171 | — | ♦ Carcinogen |
| Manganese compounds | 67 | 67 | — | — | 2,258 | |
| Mercury compounds | 9 | 8 | — | 1 | — | |
| Dioxin and dioxin-like compounds | 1 | 1 | — | — | — | ♦ Carcinogen |
2022
2021
2020
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Ammonia | 7,747 | 7,747 | — | — | — | |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 1,864 | 1,864 | — | — | — | |
| Copper compounds | 622 | 7 | — | 615 | 940 | |
| Manganese compounds | 34 | 34 | — | — | 1,786 | |
| Chromium compounds (except for chromite ore mined in the Transvaal Region) | 17 | 16 | — | 1 | 17,120 | |
| Lead compounds | 12 | 8 | — | 3 | — | |
| Mercury compounds | 8 | 8 | — | 0 | — | |
| Nickel compounds | 8 | 8 | — | 0 | 940 | ♦ Carcinogen |
2018
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 2,908 | 2,908 | — | — | — | |
| Copper compounds | 1,077 | 8 | — | 1,069 | 546 | |
| Manganese compounds | 627 | 627 | — | — | 1,037 | |
| Chromium compounds (except for chromite ore mined in the Transvaal Region) | 107 | 105 | — | 2 | 8,237 | |
| Lead compounds | 62 | 56 | — | 6 | — | |
| Mercury compounds | 9 | 9 | — | 0 | — | |
| Nickel compounds | 8 | 8 | — | 0 | 546 | ♦ Carcinogen |
2017
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Lead compounds | 30,476 | 123 | — | 30,354 | — | |
| Chromium compounds (except for chromite ore mined in the Transvaal Region) | 3,086 | 18 | — | 3,068 | 7,140 | |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 1,284 | 1,284 | — | — | — | |
| Copper compounds | 1,231 | 8 | — | 1,223 | 345 | |
| Manganese compounds | 687 | 687 | — | — | 655 | |
| Nickel compounds | 477 | 11 | — | 466 | 345 | ♦ Carcinogen |
| Mercury compounds | 176 | 176 | — | 0 | — |
2016
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 20,818 | 20,818 | — | — | — | |
| Lead compounds | 16,810 | 83 | — | 16,727 | — | |
| Copper compounds | 4,707 | 4,033 | — | 674 | 517 | |
| Chromium compounds (except for chromite ore mined in the Transvaal Region) | 1,704 | 13 | — | 1,691 | 10,100 | |
| Manganese compounds | 654 | 654 | — | — | 983 | |
| Nickel compounds | 258 | 1 | — | 257 | 517 | ♦ Carcinogen |
| Mercury compounds | 168 | 167 | — | 0 | — |
2015
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Lead compounds | 20,898 | 85 | — | 20,813 | — | |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 17,912 | 17,912 | — | — | — | |
| Copper compounds | 5,002 | 4,163 | — | 839 | 344 | |
| Chromium compounds (except for chromite ore mined in the Transvaal Region) | 2,117 | 13 | — | 2,104 | 8,881 | |
| Manganese compounds | 675 | 675 | — | — | 654 | |
| Nickel compounds | 321 | 1 | — | 320 | 344 | ♦ Carcinogen |
| Mercury compounds | 173 | 173 | — | 0 | — |
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 |
|---|---|---|---|---|
| Arsenic compounds | — | 17 | — | — |
| Nickel compounds | — | 287 | — | — |
| Lead compounds | — | 17 | — | — |
| Chromium compounds (except for chromite ore mined in the Transvaal Region) | — | 6,172 | — | — |
| Manganese compounds | — | 455 | — | — |
Off-Site Transfer Destinations
Facilities to which toxic chemicals were transferred for disposal, recycling, energy recovery, or treatment during the most recent TRI reporting year. Quantities in pounds.
| Destination | Chemical | Disposal | Recycling | Energy Rec. | Treatment |
|---|---|---|---|---|---|
|
ALTER METAL RECYCLING
MASON CITY, IA
|
Nickel compounds | — | 130 | — | — |
|
OWEN CORPORATION
CORNERSVILLE, TN
|
Nickel compounds | — | 157 | — | — |
|
OWEN CORPORATION
CORNERSVILLE, TN
|
Arsenic compounds | — | 17 | — | — |
|
ALTER METAL RECYCLING
MASON CITY, IA
|
Chromium compounds (except for chromite ore mined in the Transvaal Region) | — | 2,282 | — | — |
|
OWEN CORPORATION
CORNERSVILLE, TN
|
Chromium compounds (except for chromite ore mined in the Transvaal Region) | — | 3,890 | — | — |
|
OWEN CORPORATION
CORNERSVILLE, TN
|
Lead compounds | — | 17 | — | — |
|
ALTER METAL RECYCLING
MASON CITY, IA
|
Manganese compounds | — | 202 | — | — |
|
OWEN CORPORATION
CORNERSVILLE, TN
|
Manganese compounds | — | 253 | — | — |
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 |
|---|---|---|---|---|
| caa | Linked to Viol. Below | — | — | Open |
| caa | Linked to Viol. Below | — | — | Open |
| caa | Linked to Viol. Below | — | — | Open |
| caa | Linked to Viol. Below | — | — | Open |
| caa | Linked to Viol. Below | — | — | Open |
| caa | Linked to Viol. Below | — | — | Open |
| caa | Linked to Viol. Below | — | — | Open |
| caa | Linked to Viol. Below | — | — | Open |
| caa | Linked to Viol. Below | — | — | Open |
| caa | Linked to Viol. Below | — | — | Open |
| caa | Linked to Viol. Below | — | — | Open |
| caa | Linked to Viol. Below | — | — | Open |
| caa | Linked to Viol. Below | — | — | Open |
| caa | Linked to Viol. Below | — | — | Open |
| caa | HPV | Feb 3, 2026 | Feb 3, 2026 | Resolved |
| caa | FRV | Aug 14, 2025 | — | Open |
| caa | FRV | Aug 14, 2025 | — | Open |
| cwa | Schedule Event reported late | May 1, 2025 | — | Open |
| caa | FRV | Apr 17, 2025 | — | Open |
| caa | HPV | Mar 25, 2025 | Apr 2, 2025 | Resolved |
| caa | HPV | Nov 18, 2024 | Dec 5, 2024 | Resolved |
| caa | FRV | May 6, 2024 | — | Open |
| caa | HPV | Mar 4, 2024 | Mar 25, 2024 | Resolved |
| caa | FRV | Oct 27, 2021 | — | Open |
| caa | FRV | Dec 3, 2019 | — | Open |
| caa | FRV | Mar 4, 2019 | — | Open |
| caa | FRV | Nov 6, 2017 | — | Open |
| caa | FRV | Oct 18, 2017 | — | Open |
| caa | FRV | Oct 18, 2017 | — | Open |
| rcra | Standards for Used Oil: Generators | May 29, 2008 | Aug 18, 2008 | Resolved |
| rcra | ID and Listing of HW: General | May 29, 2008 | Aug 18, 2008 | Resolved |
| rcra | Standards Applicable to Generators of HW: General | May 29, 2008 | Aug 18, 2008 | Resolved |
| rcra | Standards Applicable to Generators of HW: Pre-Transport Requirements Applicable to Small and Large Quantity Generators | May 29, 2008 | Aug 18, 2008 | Resolved |
| rcra | Standards Applicable to Recordkeeping and Reporting Applicable to Small and Large Quantity Generators | May 29, 2008 | Aug 18, 2008 | Resolved |
| rcra | Land Disposal Restrictions: General | May 29, 2008 | Aug 18, 2008 | Resolved |
| rcra | Standards for Universal Waste Management: Standards for Small Quantity Handlers | May 29, 2008 | Aug 18, 2008 | Resolved |
| rcra | Standards Applicable to Generators of HW: General | Apr 5, 1995 | Apr 6, 1995 | 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 | 76.00 mg/L | 45.00 | +69% | Dec 2025 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 31.18 mg/L | 30.00 | +4% | Dec 2025 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 46.00 mg/L | 45.00 | +2% | Oct 2025 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 46.00 mg/L | 30.00 | +53% | Oct 2025 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 47.00 mg/L | 45.00 | +4% | Sep 2025 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 52.00 mg/L | 50.00 | +4% | Sep 2025 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 38.00 mg/L | 30.00 | +27% | Sep 2025 | Open |
| Chloride [as Cl] | DMR, Limited - Numeric Violation | 945.00 mg/L | 629.00 | +50% | Sep 2025 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 338.00 mg/L | 30.00 | +1,027% | Feb 2025 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 3.07 kg/d | 1.04 | +194% | Feb 2025 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 338.00 mg/L | 45.00 | +651% | Feb 2025 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 3.07 kg/d | 0.68 | +351% | Feb 2025 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 89.10 mg/L | 30.00 | +197% | Sep 2024 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 89.10 mg/L | 45.00 | +98% | Sep 2024 | Open |
| Temp. diff. between intake and discharge | DMR, Limited - Numeric Violation | 3.50 deg C | 3.00 | +17% | Nov 2023 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 72.44 kg/d | 12.85 | +464% | Oct 2023 | Resolved |
| Temp. diff. between intake and discharge | DMR, Limited - Numeric Violation | 3.50 deg C | 3.00 | +17% | Oct 2023 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 91.71 kg/d | 12.85 | +614% | Sep 2023 | Resolved |
| Solids, total suspended | DMR, Limited - Numeric Violation | 49.03 kg/d | 12.85 | +282% | Aug 2023 | Resolved |
| Solids, total suspended | DMR, Limited - Numeric Violation | 63.11 kg/d | 12.85 | +391% | Jul 2023 | Resolved |
| Solids, total suspended | DMR, Limited - Numeric Violation | 59.02 kg/d | 12.85 | +359% | Jun 2023 | Resolved |
| Solids, total suspended | DMR, Limited - Numeric Violation | 61.74 kg/d | 12.85 | +381% | May 2023 | Resolved |
| Solids, total suspended | DMR, Limited - Numeric Violation | 60.84 kg/d | 12.85 | +373% | Apr 2023 | Resolved |
| Solids, total suspended | DMR, Limited - Numeric Violation | 27.72 kg/d | 12.85 | +116% | Mar 2023 | Resolved |
| Solids, total suspended | DMR, Limited - Numeric Violation | 56.38 mg/L | 30.00 | +88% | Mar 2023 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 106.00 mg/L | 45.00 | +136% | Mar 2023 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 29.06 kg/d | 12.85 | +126% | Jan 2023 | Resolved |
| Solids, total suspended | DMR, Limited - Numeric Violation | 41.31 kg/d | 12.85 | +222% | Dec 2022 | Resolved |
| Solids, total suspended | DMR, Limited - Numeric Violation | 28.15 kg/d | 12.85 | +119% | Nov 2022 | Resolved |
| Solids, total suspended | DMR, Limited - Numeric Violation | 93.52 kg/d | 12.85 | +628% | Oct 2022 | Resolved |
| Temp. diff. between intake and discharge | DMR, Limited - Numeric Violation | 4.00 deg C | 3.00 | +33% | Oct 2022 | Open |
| Chloride [as Cl] | DMR, Limited - Numeric Violation | 780.00 mg/L | 389.00 | +101% | Sep 2022 | Open |
| Chloride [as Cl] | DMR, Limited - Numeric Violation | 780.00 mg/L | 629.00 | +24% | Sep 2022 | Open |
| Temp. diff. between intake and discharge | DMR, Limited - Numeric Violation | 4.00 deg C | 3.00 | +33% | Aug 2022 | Open |
| Chloride [as Cl] | DMR, Limited - Numeric Violation | 490.00 mg/L | 389.00 | +26% | Jul 2022 | Open |
| Iron, total [as Fe] | DMR, Limited - Numeric Violation | 1.44 mg/L | 1.00 | +44% | May 2022 | Open |
| Iron, total [as Fe] | DMR, Limited - Numeric Violation | 1.06 mg/L | 1.00 | +6% | May 2022 | Open |
| Iron, total [as Fe] | DMR, Limited - Numeric Violation | 3.91 kg/d | 3.03 | +29% | May 2022 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 50.00 mg/L | 45.00 | +11% | Mar 2022 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 50.00 mg/L | 30.00 | +67% | Mar 2022 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 37.68 kg/d | 14.98 | +152% | Oct 2021 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 31.70 mg/L | 30.00 | +6% | Oct 2019 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 46.00 mg/L | 45.00 | +2% | Aug 2019 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 61.25 mg/L | 50.00 | +23% | Jun 2016 | Open |
| Flow, in conduit or thru treatment plant | DMR, Limited - Numeric Violation | 0.02 MGD | 0.01 | +254% | Nov 2015 | Open |
| Flow, in conduit or thru treatment plant | DMR, Limited - Numeric Violation | 0.02 MGD | 0.01 | +144% | Nov 2015 | Open |
| Flow, in conduit or thru treatment plant | DMR, Limited - Numeric Violation | 0.01 MGD | 0.01 | +9% | Feb 2015 | Open |
| Flow, in conduit or thru treatment plant | DMR, Limited - Numeric Violation | 0.02 MGD | 0.01 | +122% | Feb 2015 | 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.
Administrative - Formal
· Case 07-1992-0434
$0
Notice of Violation
Clean Air Act
· Case 3604709170 · Feb 3, 2026
Notice of Violation
Clean Air Act
· Case 3604522706 · Aug 14, 2025
Notice of Violation
Clean Air Act
· Case 3604365401 · Mar 25, 2025
Notice of Violation
Clean Air Act
· Case 3604316169 · Feb 21, 2025
Notice of Violation
Clean Air Act
· Case 3604229621 · Jan 9, 2025
Notice of Violation
Clean Air Act
· Case 3604175750 · Nov 18, 2024
Notice of Violation
Clean Air Act
· Case 3603973276 · May 6, 2024
Notice of Violation
Clean Air Act
· Case 3603842537 · Mar 4, 2024
Administrative - Formal
· Case 07-2021-0012 · Nov 17, 2021
$197,500
Administrative - Formal
Clean Air Act
· Case 3602900379 · Nov 17, 2021
$197,500
Notice of Violation
Clean Air Act
· Case 3602908158 · Oct 27, 2021
Notice of Violation
Clean Air Act
· Case 3602121683 · Dec 12, 2020
Judicial
· Case 07-2016-0175 · Nov 18, 2020
$129,867
Notice of Violation
Clean Air Act
· Case 3601813486 · Dec 3, 2019
Notice of Violation
Clean Air Act
· Case 3601809098 · Mar 7, 2019
Notice of Violation
Clean Air Act
· Case 3601293502 · Nov 6, 2017
Notice of Violation
Clean Air Act
· Case 3601227481 · Oct 18, 2017
WRITTEN INFORMAL
RCRA (Hazardous Waste)
· Case RCRA-IAD005288634-001 · Sep 3, 2008
Administrative - Formal
· Case 07-2006-0098 · Feb 14, 2006
$140,000
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