TRI Reporter
Clean Air Act
RCRA
CALAVERAS POWER STATION
Quick Summary
- •Released 536,456 lbs of toxic chemicals to the environment in the most recent TRI reporting year.
- •Assessed $0 in total penalties since records began.
- •Reports releases of chemicals classified as known or probable carcinogens.
- Address
-
12940 US HIGHWAY 181 SOUTH
SAN ANTONIO, TX 78223
View on map ↗ - County
- BEXAR County
- Industry
- Utilities
- NAICS (North American Industry Classification)
- 221112
- Inspections
- 2 · last Feb 26, 2025
- Total Penalties
- $0 · last Jun 8, 2012
- Registry ID
- 110000464916
How This Compares
#67
of 1,879 TRI reporters in TX
#136
of 584 TRI reporters in Utilities
Ranked by most recent year's total TRI releases.
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)
-23% overall
| Year | Total Releases (lbs) | vs Prior Year |
|---|---|---|
| 2015 | 884,376 | — |
| 2016 | 1,289,921 | +46% |
| 2017 | 536,456 | -58% |
| 2018 | 822,541 | +53% |
| 2019 | 22,436 | -97% |
| 2020 | 336,564 | +1400% |
| 2021 | 559,093 | +66% |
| 2022 | 383,584 | -31% |
| 2023 | 329,484 | -14% |
| 2024 | 681,134 | +107% |
2024
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 546,187 | 887 | 49,300 | 496,000 | — | |
| Manganese compounds | 43,008 | 208 | 11,500 | 31,300 | — | |
| Vanadium compounds | 20,569 | 169 | — | 20,400 | — | |
| Copper compounds | 17,160 | 159 | 1 | 17,000 | — | |
| Nickel compounds | 12,300 | 160 | 7,240 | 4,900 | — | ♦ Carcinogen |
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 10,700 | 10,700 | — | — | — | |
| Zinc compounds | 8,452 | 1,573 | 9 | 6,870 | — | |
| Ammonia | 7,432 | 6,982 | 450 | — | — | |
| Chromium compounds (except for chromite ore mined in the Transvaal Region) | 6,530 | 130 | — | 6,400 | — | |
| Lead compounds | 3,548 | 48 | 0 | 3,500 | — | |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 2,970 | 2,970 | — | — | — | |
| Hydrogen fluoride | 2,140 | 2,140 | — | — | — | |
| Mercury compounds | 137 | 16 | 0 | 121 | — | |
| Dioxin and dioxin-like compounds | 1 | 1 | — | — | — | ♦ Carcinogen |
2023
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 222,161 | 761 | 12,400 | 209,000 | — | |
| Manganese compounds | 30,166 | 126 | 22,500 | 7,540 | — | |
| Copper compounds | 14,942 | 132 | 7,350 | 7,460 | — | |
| Zinc compounds | 12,343 | 1,283 | 7,020 | 4,040 | — | |
| Ammonia | 11,984 | 11,510 | 474 | — | — | |
| Vanadium compounds | 10,243 | 143 | — | 10,100 | — | |
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 9,060 | 9,060 | — | — | — | |
| Nickel compounds | 5,992 | 132 | 3,480 | 2,380 | — | ♦ Carcinogen |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 5,030 | 5,030 | — | — | — | |
| Chromium compounds (except for chromite ore mined in the Transvaal Region) | 3,280 | 110 | — | 3,170 | — | |
| Hydrogen fluoride | 2,200 | 2,200 | — | — | — | |
| Lead compounds | 2,000 | 37 | 252 | 1,710 | — | |
| Mercury compounds | 83 | 23 | 0 | 60 | — | |
| Dioxin and dioxin-like compounds | 1 | 1 | — | — | — | ♦ Carcinogen |
2022
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 239,491 | 991 | 13,500 | 225,000 | 8,870 | |
| Manganese compounds | 33,028 | 148 | 26,200 | 6,680 | 263 | |
| Ammonia | 32,080 | 31,590 | 490 | — | — | |
| Copper compounds | 15,746 | 166 | 7,480 | 8,100 | 320 | |
| Zinc compounds | 14,113 | 1,453 | 7,610 | 5,050 | 199 | |
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 11,300 | 11,300 | — | — | — | |
| Vanadium compounds | 10,364 | 164 | — | 10,200 | 402 | |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 9,840 | 9,840 | — | — | — | |
| Nickel compounds | 6,613 | 163 | 3,850 | 2,600 | 103 | ♦ Carcinogen |
| Hydrogen fluoride | 5,280 | 5,280 | — | — | — | |
| Chromium compounds (except for chromite ore mined in the Transvaal Region) | 3,395 | 135 | — | 3,260 | 129 | |
| Lead compounds | 2,248 | 40 | 248 | 1,960 | 77 | |
| Mercury compounds | 85 | 29 | 0 | 56 | 2 | |
| Dioxin and dioxin-like compounds | 1 | 1 | — | — | — | ♦ Carcinogen |
2021
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 378,767 | 767 | 15,000 | 363,000 | 30,700 | |
| Ammonia | 40,598 | 40,010 | 305 | 283 | — | |
| Manganese compounds | 37,422 | 122 | 27,000 | 10,300 | 869 | |
| Copper compounds | 21,812 | 162 | 7,650 | 14,000 | 1,190 | |
| Vanadium compounds | 17,755 | 155 | — | 17,600 | 1,490 | |
| Zinc compounds | 15,470 | 1,380 | 7,210 | 6,880 | 583 | |
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 12,500 | 12,500 | — | — | — | |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 11,669 | 11,669 | — | — | — | |
| Nickel compounds | 7,687 | 147 | 3,580 | 3,960 | 335 | ♦ Carcinogen |
| Hydrogen fluoride | 6,130 | 6,130 | — | — | — | |
| Chromium compounds (except for chromite ore mined in the Transvaal Region) | 5,617 | 124 | 3 | 5,490 | 464 | |
| Lead compounds | 3,396 | 112 | 244 | 3,040 | 257 | |
| Mercury compounds | 269 | 180 | 0 | 89 | 8 | |
| Dioxin and dioxin-like compounds | 1 | 1 | — | — | — | ♦ Carcinogen |
2020
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 205,036 | 734 | 14,302 | 190,000 | 31,600 | |
| Ammonia | 35,232 | 35,000 | 232 | — | — | |
| Manganese compounds | 31,154 | 112 | 25,602 | 5,440 | 893 | |
| Copper compounds | 14,459 | 139 | 7,350 | 6,970 | 1,220 | |
| Zinc compounds | 11,442 | 1,150 | 6,892 | 3,400 | 597 | |
| Vanadium compounds | 9,307 | 137 | — | 9,170 | 1,530 | |
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 7,790 | 7,790 | — | — | — | |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 7,110 | 7,110 | — | — | — | |
| Nickel compounds | 5,745 | 125 | 3,410 | 2,210 | 344 | ♦ Carcinogen |
| Hydrogen fluoride | 4,350 | 4,350 | — | — | — | |
| Chromium compounds (except for chromite ore mined in the Transvaal Region) | 2,951 | 108 | 3 | 2,840 | 477 | |
| Lead compounds | 1,780 | 113 | 237 | 1,430 | 264 | |
| Mercury compounds | 207 | 164 | 0 | 43 | 8 | |
| Dioxin and dioxin-like compounds | 1 | 1 | — | — | — | ♦ Carcinogen |
2019
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Zinc compounds | 13,257 | 1,130 | 9,247 | 2,880 | — | |
| Vanadium compounds | 7,106 | 116 | — | 6,990 | — | |
| Lead compounds | 1,867 | 162 | 415 | 1,290 | — | |
| Mercury compounds | 207 | 162 | 0 | 44 | — |
2018
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 458,300 | 2,400 | 22,900 | 433,000 | 366,790 | |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 98,857 | 98,857 | — | — | — | |
| Ammonia | 72,941 | 72,500 | 441 | — | — | |
| Manganese compounds | 42,163 | 369 | 27,694 | 14,100 | 11,758 | |
| Copper compounds | 34,973 | 373 | 19,600 | 15,000 | 14,877 | |
| Hydrogen fluoride | 31,600 | 31,600 | — | — | — | |
| Zinc compounds | 24,155 | 2,780 | 12,405 | 8,970 | 8,813 | |
| Vanadium compounds | 20,860 | 360 | — | 20,500 | 17,792 | |
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 17,900 | 17,900 | — | — | — | |
| Nickel compounds | 10,964 | 304 | 5,450 | 5,210 | 3,849 | ♦ Carcinogen |
| Chromium compounds (except for chromite ore mined in the Transvaal Region) | 6,050 | 278 | 2 | 5,770 | 5,076 | |
| Lead compounds | 3,518 | 257 | 651 | 2,610 | 3,035 | |
| Mercury compounds | 258 | 186 | 0 | 72 | 544 | |
| Dioxin and dioxin-like compounds | 2 | 2 | — | — | — | ♦ Carcinogen |
2017
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 344,910 | 2,117 | 5,790 | 337,003 | 250,000 | |
| Ammonia | 66,234 | 65,960 | 274 | — | — | |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 35,859 | 35,859 | — | — | — | |
| Hydrogen fluoride | 24,293 | 24,293 | — | — | — | |
| Vanadium compounds | 14,384 | 279 | — | 14,105 | 10,500 | |
| Copper compounds | 11,784 | 296 | 888 | 10,600 | 8,580 | |
| Manganese compounds | 11,525 | 322 | 3 | 11,200 | 8,090 | |
| Zinc compounds | 8,411 | 2,131 | 31 | 6,249 | 5,210 | |
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 7,974 | 7,974 | — | — | — | |
| Chromium compounds (except for chromite ore mined in the Transvaal Region) | 4,468 | 228 | 5 | 4,235 | 3,180 | |
| Nickel compounds | 3,886 | 246 | 17 | 3,623 | 2,420 | ♦ Carcinogen |
| Lead compounds | 2,333 | 256 | 1 | 2,076 | 1,980 | |
| Mercury compounds | 393 | 186 | — | 207 | 26 | |
| Dioxin and dioxin-like compounds | 2 | 2 | — | — | — | ♦ Carcinogen |
2016
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 1,042,124 | 1,982 | 142 | 1,040,000 | 195,360 | |
| Ammonia | 58,437 | 58,260 | 177 | — | — | |
| Vanadium compounds | 40,849 | 249 | — | 40,600 | 7,614 | |
| Copper compounds | 27,547 | 247 | — | 27,300 | 5,300 | |
| Zinc compounds | 24,948 | 2,002 | 46 | 22,900 | 4,448 | |
| Manganese compounds | 21,842 | 216 | 526 | 21,100 | 3,987 | |
| Hydrogen fluoride | 17,910 | 17,910 | — | — | — | |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 13,244 | 13,244 | — | — | — | |
| Chromium compounds (except for chromite ore mined in the Transvaal Region) | 12,936 | 199 | 337 | 12,400 | 2,324 | |
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 11,551 | 11,551 | — | — | — | |
| Nickel compounds | 11,241 | 223 | 18 | 11,000 | 1,984 | ♦ Carcinogen |
| Lead compounds | 6,892 | 235 | 308 | 6,349 | 1,303 | |
| Mercury compounds | 399 | 194 | — | 205 | 18 | |
| Dioxin and dioxin-like compounds | 2 | 2 | — | — | — | ♦ Carcinogen |
2015
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 681,210 | 1,913 | 297 | 679,000 | 118,506 | |
| Ammonia | 58,333 | 58,200 | 133 | — | — | |
| Vanadium compounds | 23,805 | 205 | — | 23,600 | 4,138 | |
| Hydrogen fluoride | 21,163 | 21,163 | — | — | — | |
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 18,785 | 18,785 | — | — | — | |
| Manganese compounds | 17,347 | 209 | 538 | 16,600 | 2,923 | |
| Copper compounds | 16,827 | 191 | 136 | 16,500 | 3,073 | |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 14,720 | 14,720 | — | — | — | |
| Zinc compounds | 13,798 | 1,539 | 59 | 12,200 | 2,290 | |
| Chromium compounds (except for chromite ore mined in the Transvaal Region) | 7,387 | 157 | 120 | 7,110 | 1,255 | |
| Nickel compounds | 6,746 | 174 | 22 | 6,550 | 1,064 | ♦ Carcinogen |
| Lead compounds | 3,979 | 216 | 73 | 3,690 | 739 | |
| Mercury compounds | 275 | 241 | 0 | 34 | 7 | |
| Dioxin and dioxin-like compounds | 1 | 1 | — | — | — | ♦ Carcinogen |
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 |
|---|---|---|---|---|
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | — | — | — | 146,922 |
| Hydrogen fluoride | — | — | — | 386,336 |
| Ammonia | — | — | — | 20 |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | — | — | — | 36,813 |
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 |
|---|---|---|---|---|---|
|
BORAL MATERIAL TECHNOLOGIES
SAN ANTONIO, TX
|
Nickel compounds | 2,420 | — | — | — |
|
BORAL MATERIAL TECHNOLOGIES
SAN ANTONIO, TX
|
Chromium compounds (except for chromite ore mined in the Transvaal Region) | 3,180 | — | — | — |
|
BORAL MATERIAL TECHNOLOGIES
SAN ANTONIO, TX
|
Lead compounds | 1,980 | — | — | — |
|
BORAL MATERIAL TECHNOLOGIES
SAN ANTONIO, TX
|
Vanadium compounds | 10,500 | — | — | — |
|
BORAL MATERIAL TECHNOLOGIES
SAN ANTONIO, TX
|
Ammonia | — | — | — | — |
|
BORAL MATERIAL TECHNOLOGIES
SAN ANTONIO, TX
|
Copper compounds | 8,580 | — | — | — |
|
BORAL MATERIAL TECHNOLOGIES
SAN ANTONIO, TX
|
Zinc compounds | 5,210 | — | — | — |
|
BORAL MATERIAL TECHNOLOGIES
SAN ANTONIO, TX
|
Manganese compounds | 8,090 | — | — | — |
|
BORAL MATERIAL TECHNOLOGIES
SAN ANTONIO, TX
|
Dioxin and dioxin-like compounds | — | — | — | — |
|
BORAL MATERIAL TECHNOLOGIES
SAN ANTONIO, TX
|
Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 250,000 | — | — | — |
|
BORAL MATERIAL TECHNOLOGIES
SAN ANTONIO, TX
|
Mercury compounds | 26 | — | — | — |
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 |
|---|---|---|---|---|
| rcra | State Statutory or Regulatory requirements that are broader-in-scope than the federal RCRA requirements | Jan 20, 2005 | Apr 6, 2005 | Resolved |
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 06-2010-0607 · Nov 2, 2009
WRITTEN INFORMAL
RCRA (Hazardous Waste)
· Case RCRA-TXD000815019-1 · Mar 18, 2005
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