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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 - 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 1,630,413 67.2 67.2
Chlorine, total residual 171,022 7.053 74.2
Mercury, total (as Hg) 110,499 4.55 78.8
Benzo(a)pyrene 70,967 2.92 81.7
Heptachlor epoxide 55,712 2.29 84.07
Cyanide, free (amen. to chlorination) 54,854 2.26 86.3
2,3,7,8-Tetrachlorodibenzo-p-dioxin 38,253 1.57 87.9
Fluoride, total (as F) 31,983 1.31 89.2
3,4-Benzofluoranthene 24,585 1.013 90.2
Benzo(a)anthracene 20,692 0.85 91.1

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Top Receiving Watersheds (2011)
HUC-12 Code HUC Name Total DMR TWPE (lb-eq/yr)
020802060201 Bailey Creek-James River 710,122
020802060101 Almond Creek-James River 404,129
040900040503 Huntington Creek-Frontal Lake Erie 109,087
080802060302 Bayou Verdine-Calcasieu River 70,197
071402010206 Town of Ficklin-Kaskaskia River 67,206
050301010310 Sixmile Run-Ohio River 60,306
060101020704 Kendrick Creek-South Fork Holston River 44,928
051302010605 Cumberland River-Shutes Branch 36,459
020402020507 Woodbury Creek-Delaware River 27,271
030202020307 Mosley Creek-Neuse River 22,442

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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 INC HOPEWELL PLANT HOPEWELL, VA 2869 020802060201 Hexachlorobenzene 627,029
VA0004669 DUPONT SPRUANCE PLANT RICHMOND, VA 2821 020802060101 Hexachlorobenzene 360,542
NJ0005100 DUPONT CHAMBERS WORKS DEEPWATER, NJ 2869 Hexachlorobenzene 263,610
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
SC0042803 ARCHROMA US INC MARTIN PLANT MARTIN, SC 2865 030601060905 Hexachlorobenzene 71,092
LA0003336 SASOL NORTH AMERICA INC LAKE CHARLES CHEMICAL COMPLEX WESTLAKE, LA 2869 080802060302 Hexachlorobenzene 63,472
IL0000141 EQUISTAR CHEMICALS LP TUSCOLA PLANT TUSCOLA, IL 2869 071402010206 Hexachlorobenzene 60,428
NY0260738 PORT TERMINAL LTD ALBANY, NY 5169 020200060305 Cyanide 54,015
PA0006254 LYONDELL CHEM BEAVER VALLEY MONACA, PA 2821 050301010310 Hexachlorobenzene 53,103

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