Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
BLACK HILLS CORP - BEN FRENCH POWER PLANT
409 DEADWOOD AVE, RAPID CITY, SD, 57701
Parent company: BLACK HILLS CORP
Carcinogen
PBT
— EPA classifications across all reporting years
Top chemical totals
The 10 chemicals with the highest cumulative on-site releases in pounds (lbs) across all available years.
Full release table
Rows are years. Columns show the five highest-total chemicals across all years plus each year's total release volume.
| All values in pounds (lbs) | ||||||
|---|---|---|---|---|---|---|
| Year | Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | n-Hexane | Lead | Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | Toluene | Total (lbs) |
| 2013 | — | 183 | — | — | 17 | 213 |
| 2012 | 293 | 204 | 11 | — | 36 | 578 |
| 2011 | 414 | 118 | 13 | — | 40 | 630 |
| 2010 | 380 | — | 9 | — | 39 | 447 |
| 2009 | 463 | 138 | 13 | — | 46 | 881 |
| 2008 | 361 | 118 | 11 | — | 37 | 705 |
| 2007 | 22,665 | — | 503 | — | 49 | 23,237 |
| 2006 | 59,382 | — | 1,309 | — | 45 | 60,755 |
| 2005 | 42,750 | 57 | 945 | — | 42 | 44,010 |
| 2004 | 41,265 | 136 | 913 | — | 47 | 42,580 |
| 2003 | 42,680 | 358 | 944 | — | 65 | 44,286 |
| 2002 | 25,405 | 569 | 563 | — | 76 | 26,837 |
| 2001 | 43,267 | 4,860 | 963 | — | 439 | 50,149 |
| 2000 | 1,532 | 108 | — | — | 408 | 3,121 |
| 1999 | 2,392 | 549 | — | — | 1,655 | 6,368 |
| 1998 | 3,557 | 549 | — | 6,037 | 1,666 | 13,639 |
▎ Facilities report to EPA's TRI once they manufacture, process, or use a listed chemical above set thresholds. Once that threshold is crossed, they must report actual releases regardless of size — so a small number reflects genuine low-level discharge, not a data error.