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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 more information on the types of errors identified, see EPA's Technical Support Document for the 2010 Effluent Guidelines Program (PDF) (255 pp, 3.4MB). Because of this review, and EPA's methodology for interpreting data and calculating loads (explained in EPA's Technical Support Document for the Annual Review of Existing Effluent Guidelines and Identification of Potential New Point Source Categories), the calculated loads and category rankings may differ using DMR and TRI data that has not been updated. Data that have been updated by EPA's annual reviews are flagged by green flags designating that a change has been made to a concentration, quantity, or flow value. View a listing of the changes for the most recent annual review (PDF) (1 pg, 7K).

Point Source Category Information - Iron and steel manufacturing (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
NITRATE COMPOUNDS 24,424 148 24,432 30.2 30.2
LEAD AND LEAD COMPOUNDS 19,285 2,818 21,857 27.06 57.3
POLYCYCLIC AROMATIC COMPOUNDS 11,382  Original TRI load is 35,872 0 11,382 14.09 71.4
MANGANESE AND MANGANESE COMPOUNDS 6,168 80.2 6,202 7.68 79.09
COPPER AND COPPER COMPOUNDS 4,174 195 4,303 5.32 84.4
MERCURY AND MERCURY COMPOUNDS 3,124 124 3,125 3.86 88.2
ZINC AND ZINC COMPOUNDS 2,404 129 2,520 3.12 91.4
CADMIUM AND CADMIUM COMPOUNDS 2,106 0 2,106 2.608 94.02
CHROMIUM AND CHROMIUM COMPOUNDS 1,251 30.1 1,260 1.56 95.5
NICKEL AND NICKEL COMPOUNDS 804 197 922 1.14 96.7

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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)
051402010702 Sandy Creek 14,433 0 14,433
050301010902 South Fork Cross Creek-Cross Creek 8,977  Original load is 33,467 0 8,977
041100020504 Town of Twinsburg-Tinkers Creek 3,974 2,739 6,604
040400010603 Calumet River-Frontal Lake Michigan 5,262 17.8 5,262
071200030406 Headwaters Grand Calumet River 4,488 0 4,488
050400011904 Morgan Run-Tuscarawas River 3,769 0 3,769
050902031010 McCools Creek-Ohio River 2,612 0 2,612
050301011105 Kings Creek 2,363 0 2,363
071401010402 Horseshoe Lake 2,210 0 2,210
041100020605 City of Cleveland-Cuyahoga River 2,156 0 2,156

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Top Facility Discharges in Toxic-Weighted Pounds (TWPE) (2011)
TRI Facility ID Facility Name City, State NAICS Code HUC-12 Code Top Chemical Top Chemcical Direct TRI TWPE (lb-eq/yr) Top Chemcical Indirect TRI TWPE (lb-eq/yr) Top Chemcical Total TRI TWPE (lb-eq/yr)
47635KSTLC6500N AK STEEL CORP (ROCKPORT WORKS ) ROCKPORT, IN 331111 051402010702 NITRATE COMPOUNDS 13,702 0 13,702
26037WHLNGROUTE MOUNTAIN STATE CARBON LLC FOLLANSBEE PLANT FOLLANSBEE, WV 331111 050301010902 POLYCYCLIC AROMATIC COMPOUNDS 8,727  Original load is 33,218 0 8,727
44125MRCNS4300E CHARTER STEEL CLEVELAND CUYAHOGA HEIGHTS, OH 331111 041100020504 LEAD AND LEAD COMPOUNDS 3,914 2,468 6,383
43812CSHCTSTATE AK STEEL CORP COSHOCTON WORKS COSHOCTON, OH 331221 050400011904 NITRATE COMPOUNDS 3,659 0 3,659
41045NRTHMUS42E NORTH AMERICAN STAINLESS GHENT, KY 331221 050902031010 NITRATE COMPOUNDS 2,332 0 2,332
35064SSFRFVALLE USS FAIRFIELD WORKS FAIRFIELD, AL 331111 031601120101 POLYCYCLIC AROMATIC COMPOUNDS 2,321 0 2,321
44105SGCLV3060E ARCELORMITTAL CLEVELAND INC CLEVELAND, OH 331111 041100020605 CADMIUM AND CADMIUM COMPOUNDS 1,548 0 1,548
46304BTHLHBURNS ARCELORMITTAL BURNS HARBOR LLC BURNS HARBOR, IN 331111 040400010603 COPPER AND COPPER COMPOUNDS 1,512 0 1,512
15034SSRVNPOBOX USS MON VALLEY WORKS - IRVIN P LANT WEST MIFFLIN, PA 331111 050200050807 LEAD AND LEAD COMPOUNDS 1,491 0 1,491
46402SSGRYONENO USS GARY WORKS GARY, IN 331111 071200030406 NITRATE COMPOUNDS 1,344 0 1,344

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