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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 p, 7K).

Point Source Category Information - Organic chemicals, plastics and synthetic fibers (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
Hexachlorobenzene 688,812 44.7 44.7
Chlorine, total residual 168,234 10.9 55.6
Polychlorinated biphenyls (PCBs) 146,806 9.53 65.1
Lead, total (as Pb) 111,026 7.209 72.3
Mercury, total (as Hg) 109,952 7.13 79.5
Cyanide, free (amen. to chlorination) 54,921 3.56 83.1
Heptachlor epoxide 39,914 2.59 85.6
Benzo(a)pyrene 37,182 2.41 88.1
Zinc, total (as Zn) 21,018  Original DMR load is 21,024 1.36 89.4
Chloride (as Cl) 17,360 1.12 90.6

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Top Receiving Watersheds (2011)
HUC-12 Code HUC Name Total DMR TWPE (lb-eq/yr)
020802060201 Bailey Creek-James River 709,599
040900040503 Huntington Creek-Frontal Lake Erie 109,087
080802060302 Bayou Verdine-Calcasieu River 42,721
080702040302 Hope Canal-Pipeline Canal 14,390
120401040705 Highlands Reservoir-San Jacinto River 11,630
120401040703 Vince Bayou-Buffalo Bayou 8,969  Original DMR load is 8,975
050901010103 Long Run-Ohio River 7,237
011000040105 Outlet Quinnipiac River 3,877
040802010606 Sarle Drain-Tittabawassee River 3,866
020802071002 Ashton Creek-Appomattox River 3,019

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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)
VA0005291 HONEYWELL INTERNATIONAL INCORPORATED - HOPEWELL HOPEWELL, VA 2869 020802060201 Hexachlorobenzene 627,029
WV0000086 AVENTIS CROPSCIENCE USA LP INSTITUTE, WV 2869 Polychlorinated biphenyls 146,806
MI0000540 BASF CORP WYANDOTTE, MI 2869 040900040503 Mercury 109,087
TX0006017 CELANESE LTD BAY CITY PLANT BAY CITY, TX 2869 120903020207 Total Residual Chlorine 109,025
AL0002747 KEMIRA WATER SOLUTIONS INC MOBILE, AL 2821 031602040305 Lead 105,953
NY0260738 PORT TERMINAL LTD ALBANY, NY 5169 020200060305 Cyanide 54,015
LA0003336 SASOL NORTH AMERICA INC LAKE CHARLES CHEMICAL COMPLEX WESTLAKE, LA 2869 080802060302 Hexachlorobenzene 39,889
VA0005291 HONEYWELL INTERNATIONAL INCORPORATED - HOPEWELL HOPEWELL, VA 2869 020802060201 Benzo[a]pyrene 32,405
NJ0005100 EI DUPONT DENEMOURS & CO DEEPWATER, NJ 2869 Heptachlor epoxide 30,038
AL0002747 KEMIRA WATER SOLUTIONS INC MOBILE, AL 2821 031602040305 Zinc 18,920

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