Jump to main content or area navigation.

Contact Us

Discharge Monitoring Report (DMR) Pollutant Loading Tool

Note: This area of the DMR Loading Tool includes data used for EPA's annual review of industrial effluent discharges. EPA's Office of Water is responsible for developing programs and tools authorized under the Clean Water Act (CWA), which enables EPA and the states to protect and restore the Nation's waters. The CWA requires EPA to annually review and, if appropriate, revise its water pollution control technology-based regulations, called "effluent limitations guidelines" or "effluent guidelines" that limit the discharge of pollutants to waters of the U.S. from industrial facilities. As part of the EPA's annual reviews, EPA estimates the load of pollutants discharged using a combination of discharge monitoring report (DMR) data, from ICIS-NPDES, and Toxics Release Inventory (TRI) data. EPA also assigns a relative toxic weight to the estimated loads to rank industrial categories by toxic weighted pound equivalents (TWPE). For more background on EPA's effluent guidelines program see EPA's Effluent Guidelines website.

EPA reviews the DMR and TRI data used to calculate effluent loads and TWPE for accuracy prior to further investigating industrial categories for possible effluent guideline revisions. For identified outlier data, EPA contacts states and facilities to confirm and update (if appropriate) data values and units. For information on the methodology and types of changes identified, see EPA's most recent odd-numbered year Annual Effluent Guidelines Review Report (PDF) (169 pp, 2MB) on the Effluent Guidelines Plan webpage. Because of this review and EPA's methodology for interpreting data and calculating loads, the calculated loads and category rankings may differ from original calculations using DMR and TRI data that have not been updated. Data that have been updated by EPA's annual reviews are indicated by green flags designating that a change has been made to a concentration, quantity, or flow value. A listing of the DMR and TRI data changes from the most recent annual review is available in the Annual Effluent Guidelines Review Report Appendices (PDF) (241 pp, 3.3MB).

Point Source Category Information - Coal mining (TRI)

EPA 304M Annual Review icon — Indicates load was altered by EPA’s 304M Annual Review. You can hover over the green flag to see the original load from the TRI data.

Top Chemicals - Toxic-Weighted Pounds (TWPE) (2011)
Chemical Name Direct TRI TWPE (lb-eq/yr) Indirect TRI TWPE (lb-eq/yr) Total TRI TWPE (lb-eq/yr) % of Category TWPE Cumulative % of
Category TWPE
AMMONIA 592 0 592 73.2 73.2
MANGANESE AND MANGANESE COMPOUNDS 169 0 169 20.9 94.1
MERCURY AND MERCURY COMPOUNDS 32.8 0 32.8 4.071 98.2
LEAD AND LEAD COMPOUNDS 11.09 0 11.09 1.37 99.6
COPPER AND COPPER COMPOUNDS 1.304 0 1.304 0.16 99.7
ARSENIC AND ARSENIC COMPOUNDS 0.52 0 0.52 0.065 99.8
CHROMIUM AND CHROMIUM COMPOUNDS 0.49 0 0.49 0.061 99.8
ZINC AND ZINC COMPOUNDS 0.36 0 0.36 0.044 99.9
BARIUM AND BARIUM COMPOUNDS 0.16 0 0.16 0.02002 99.9
NICKEL AND NICKEL COMPOUNDS 0.15 0 0.15 0.019 99.9

Download All Data

Top Receiving Watersheds (2011)
HUC-12 Code HUC Name Direct TRI TWPE (lb-eq/yr) Indirect TRI TWPE (lb-eq/yr) Total TRI TWPE (lb-eq/yr)
050500090502 Upper Little Coal River 302 0 302
050901010401 Headwaters Little Raccoon Creek 283 0 283
020700020201 Shields Run-North Branch Potomac River 162 0 162
100901010501 Tongue River-Pearson Creek 2.34 0 2.34
050100070102 Beaverdam Creek-Quemahoning Creek 0.49 0 0.49
050500090603 Joes Creek-Big Coal River 0.42 0 0.42
101301010803 Nelson Lake-Square Butte Creek 0 0 0
101302011102 Boekel Cemetery 0 0 0
050301060904 Piney Creek-Captina Creek 0 0 0
051202081505 Dogwood Lake-Mud Creek 0 0 0

Download All Data

Top Facility Discharges in Toxic-Weighted Pounds (TWPE) (2011)
TRI Facility ID Facility Name City, State NAICS Code HUC-12 Code Top Chemical Top Chemical Direct TRI TWPE (lb-eq/yr) Top Chemical Indirect TRI TWPE (lb-eq/yr) Top Chemical Total TRI TWPE (lb-eq/yr)
25130HBTMNUSRT1 HOBET MINING LLC MADISON, WV 212111 050500090502 AMMONIA 302 0 302
45634SNDSH38701 SANDS HILL MINING LLC HAMDEN, OH 212111 050901010401 AMMONIA 283 0 283
21550MTTKC293TA METTIKI COAL LLC OAKLAND, MD 212112 020700020201 MANGANESE AND MANGANESE COMPOUNDS 139 0 139
81625TRPPR65MIL TRAPPER MINING INC CRAIG, CO 212111 140500011108 MANGANESE AND MANGANESE COMPOUNDS 27.9 0 27.9
21550MTTKC293TA METTIKI COAL LLC OAKLAND, MD 212112 020700020201 MERCURY AND MERCURY COMPOUNDS 19.3 0 19.3
81625TRPPR65MIL TRAPPER MINING INC CRAIG, CO 212111 140500011108 MERCURY AND MERCURY COMPOUNDS 10.5 0 10.5
35006SSTLM8800O OAK GROVE RESOURCES LLC-CONCORD PREP PLANT/OAK GROVE MINE ADGER, AL 212112 031601120104 LEAD AND LEAD COMPOUNDS 6.49 0 6.49
25507CTNRY5914C CATENARY COAL CO LLC ESKDALE, WV 212111 AMMONIA 6.32 0 6.32
21550MTTKC293TA METTIKI COAL LLC OAKLAND, MD 212112 020700020201 LEAD AND LEAD COMPOUNDS 4.076 0 4.076
59025DCKRC12LAK DECKER COAL CO DECKER, MT 212111 100901010501 MERCURY AND MERCURY COMPOUNDS 2.34 0 2.34

Download All Data

Top of Page

About the Data Glossary Error Correction Contact Us

Jump to main content.