Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
DYNA-DRILL TECHNOLOGIES LLC
4607 WORLD HOUSTON PKWY, HOUSTON, TX, 77032
Parent company: PERF-O-LOG LLC
Carcinogen
— 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 | Toluene | Nickel | Chromium | Copper | Total (lbs) | |
| 2013 | — | 14 | 10 | 6 | 29 | |
| 2012 | 15,420 | 22 | 18 | 2 | 15,462 | |
| 2011 | 10,179 | — | — | — | 10,179 | |
| 2010 | — | — | 13 | — | 13 | |
| 2009 | 10,721 | 11 | 7 | — | 10,740 | |
| 2008 | 16,313 | 13 | 10 | — | 16,337 | |
▎ 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.