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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 - Iron and steel manufacturing (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
Polychlorinated biphenyls 73,167 36.0005 36.0005
Fluoride 29,520 14.5 50.5
Cyanide 16,091 7.91 58.4
Silver 15,842 7.79 66.2
Total Residual Chlorine 9,344 4.59 70.8
Lead 7,860 3.86 74.7
Benz[a]anthracene 6,885 3.38 78.09
Benzo[a]pyrene 5,980 2.94 81.03
Copper 5,777 2.84 83.8
Aluminum 5,606 2.75 86.6

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Top Receiving Watersheds (2011)
HUC-12 Code HUC Name Total DMR TWPE (lb-eq/yr)
020402010405 Mill Creek-Silver Lake 73,475
050301011109 Wills Creek-Ohio River 55,324
040400010603 Calumet River-Frontal Lake Michigan 17,201
040900040407 River Rouge 17,030
040400010403 Coffee Creek-East Arm Little Calumet River 8,692
071401010402 Horseshoe Lake 6,530
110200020905 Salt Creek-Arkansas River 4,968
050301010303 Kilbuck Run-Ohio River 3,784
050100090304 Chartiers Run-Allegheny River 2,490
111403050309 Brutons Creek 1,972

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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)
PA0013463 US STEEL FAIRLESS HILLS FACILITY FAIRLESS HILLS, PA 3312 020402010405 Polychlorinated biphenyls 73,167
MI0043524 ROUGE STEEL CO DEARBORN, MI 3312 040900040407 Silver 15,828
IN0000281 UNITED STATES STEEL CORP - GARY WORKS FACILITY GARY, IN 3312 040400010603 Fluoride 10,182
WV0003336 MITTAL STEEL USA WEIRTON INC WEIRTON, WV 3312 050301011109 Fluoride 9,936
WV0004499 MOUNTAIN STATE CARBON, LLC FOLLANSBEE, WV 3312 050301011109 Cyanide 7,038
WV0004499 MOUNTAIN STATE CARBON, LLC FOLLANSBEE, WV 3312 050301011109 Benz[a]anthracene 6,885
WV0003336 MITTAL STEEL USA WEIRTON INC WEIRTON, WV 3312 050301011109 Total Residual Chlorine 5,486
WV0004499 MOUNTAIN STATE CARBON, LLC FOLLANSBEE, WV 3312 050301011109 Benzo[a]pyrene 5,106
IL0000329 UNITED STATES STEEL CORPORATION GRANITE CITY, IL 3312 071401010402 Fluoride 4,884
WV0004499 MOUNTAIN STATE CARBON, LLC FOLLANSBEE, WV 3312 050301011109 Selenium 3,032

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