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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 (DMR)

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

Top Pollutants - Toxic-Weighted Pounds (TWPE) (2011)
Pollutant Name Total DMR TWPE (lb-eq/yr) % of Category TWPE Cumulative % of
Category TWPE
Manganese 181,902 83.2 83.2
Sulfate 3,454  Original DMR load is 45,096 1.58 84.8
Mercury 4,649  Original DMR load is 35,877 2.12 86.9
Iron 13,465 6.16 93.1
Chloride 5,100 2.33 95.4
Magnesium 2,754 1.26 96.7
Selenium 2,124 0.97 97.6
Aluminum 1,833 0.83 98.5
Total Residual Chlorine 1,656 0.75 99.2
Potassium 435 0.19 99.4

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Top Receiving Watersheds (2011)
HUC-12 Code HUC Name Total DMR TWPE (lb-eq/yr)
051402040203 Brushy Creek 167,679
051201081004 Fairview Drain-Little Vermillion River 1,580  Original DMR load is 43,222
071402040701 Town of Tilden-Plum Creek 295  Original DMR load is 31,523
020700020201 Shields Run-North Branch Potomac River 4,976
071402030204 Cress Creek-Middle Fork Shoal Creek 4,639
050301060904 Piney Creek-Captina Creek 2,472
051202090803 Lost Creek 2,317
050200010304 Tenmile Creek-Buckhannon River 2,240
050400040704 Fourmile Run-Meigs Creek 1,884
051402050403 Lower Slover Creek 1,630

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Top Facility Discharges in Toxic-Weighted Pounds (TWPE) (2011)
NPDES ID Facility Name City, State SIC Code HUC-12 Code Top Pollutant Top Pollutant TWPE (lb-eq/yr)
IL0059749 NUBAY MINING LLC GALATIA, IL 1222 051402040203 Manganese 158,995
IL0074802 PEABODY MIDWEST MINING LLC RIDGE FARM, IL 1222 051201081004 Sulfate 39.1  Original DMR load is 41,682
IL0055824 ALPENA VISION RESOURCES LLC SPARTA, IL 1221 071402040701 Mercury 0.086  Original DMR load is 31,228
CO0027154 TWENTYMILE COAL COMPANY OAK CREEK, CO 1222 140500010906 Iron 6,995
IL0078727 HILLSBORO ENERGY LLC - DEER RUN MINE HILLSBORO, IL 1222 071402030204 Mercury 4,633
TX0086541 TEXAS WESTMORELAND COAL CO JEWETT, TX 1221 120701030307 Manganese 3,879
IL0059749 NUBAY MINING LLC GALATIA, IL 1222 051402040203 Chloride 3,440
IL0059749 NUBAY MINING LLC GALATIA, IL 1222 051402040203 Iron 2,662
IL0059749 NUBAY MINING LLC GALATIA, IL 1222 051402040203 Sulfate 2,582
MD0055182 METTIKI COAL LLC OAKLAND, MD 1221 020700020201 Manganese 2,393

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