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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 - Metal Finishing (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
PCB, total, scan effluent 508,009 61.5 61.5
Polychlorinated biphenyls (PCBs) 70,880 8.58 70.09
Benzo(a)pyrene 56,748 6.87 76.9
PCB-1248 44,978 5.44 82.4
Chrysene 24,422 2.95 85.3
Dibenzo(a,h)anthracene 17,297 2.094 87.4
Indeno(1,2,3-cd)pyrene 17,270 2.091 89.5
Benzo(a)anthracene 17,265 2.0905 91.6
3,4-Benzofluoranthene 17,259 2.089 93.7
Benzo(k)fluoranthene 17,245 2.088 95.8

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Top Receiving Watersheds (2011)
HUC-12 Code HUC Name Total DMR TWPE (lb-eq/yr)
102002010302 Headwaters Lost Creek 508,010
040400020501 Waukegan River-Frontal Lake Michigan 36,612
011000050103 East Branch Housatonic River 21,081
041503050706 Hutchins Creek-Raquette River 8,732
010900020401 Acushnet River-Frontal Buzzards Bay 3,376
041300030704 Genesee River 1,280
020302030000 Long Island Sound Deep 531
050200020204 Outlet Elk Creek 484
041201040601 Twomile Creek-Niagara River 346
020200080306 Wiccopee Creek-Fishkill Creek 241

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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)
NE0000647 BEHLEN MANUFACTURING COMPANY COLUMBUS, NE 3585 102002010302 Polychlorinated biphenyls 508,009
IL0045284 UNION PACIFIC RAILROAD DUPO, IL 4011 071401010507 Benzo[a]pyrene 56,525
OH0142743 AKRON AIRDOCK FACILITY AKRON, OH 3721 041100020303 Aroclor 1248 43,233
IL0002267 OUTBOARD MARINE CORPORATION WAUKEGAN, IL 3519 040400020501 Polychlorinated biphenyls 36,612
IL0045284 UNION PACIFIC RAILROAD DUPO, IL 4011 071401010507 Chrysene 24,375
MA0003891 GENERAL ELECTRIC PITTSFIELD, MA 3612 011000050103 Polychlorinated biphenyls 21,081
IL0045284 UNION PACIFIC RAILROAD DUPO, IL 4011 071401010507 Dibenz[a,h]anthracene 17,279
IL0045284 UNION PACIFIC RAILROAD DUPO, IL 4011 071401010507 Benz[a]anthracene 17,234
IL0045284 UNION PACIFIC RAILROAD DUPO, IL 4011 071401010507 Benzo[k]fluoranthene 17,217
IL0045284 UNION PACIFIC RAILROAD DUPO, IL 4011 071401010507 Benzo(b)fluoranthene 17,217

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