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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).

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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
Chlorine, total residual 61,876  Original DMR load is 170,901 12.6 12.6
Mercury, total (as Hg) 110,021 22.4 35.02
Hexachlorobenzene 86,625 17.6 52.6
Cyanide, free (amen. to chlorination) 54,852 11.1 63.8
Heptachlor epoxide 39,914 8.13 71.9
Fluoride, total (as F) 32,156 6.55 78.5
Chloride (as Cl) 10,586 2.15 80.7
2,3,7,8-Tetrachlorodibenzo-p-dioxin 10,087 2.055 82.7
Cyanide, total (as CN) 9,348 1.904 84.6
Copper, total (as Cu) 9,076 1.84 86.5

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Top Receiving Watersheds (2011)
HUC-12 Code HUC Name Total DMR TWPE (lb-eq/yr)
040900040503 Huntington Creek-Frontal Lake Erie 109,087
020402060103 Salem Canal-Whooping John Creek 70,309
020200060305 Papscanee Creek-Hudson River 54,148
080802060302 Bayou Verdine-Calcasieu River 42,774
030202020307 Mosley Creek-Neuse River 22,442
120401040703 Vince Bayou-Buffalo Bayou 17,391  Original DMR load is 17,396
080702040302 Hope Canal-Pipeline Canal 14,390
010900040102 Matfield River 13,965
120401040704 Jackson Bayou-San Jacinto River 11,843
050500080303 Tyler Creek-Kanawha River 11,071

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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)
MI0000540 BASF CORP WYANDOTTE, MI 2869 040900040503 Mercury, total (as Hg) 109,087
TX0006017 OXEA BAY CITY PLANT BAY CITY, TX 2869 120903020207 Chlorine, total residual  Original DMR load is 109,025
NY0260738 PORT TERMINAL LTD ALBANY, NY 5169 020200060305 Cyanide, free (amen. to chlorination) 54,015
LA0003336 SASOL NORTH AMERICA INC - LAKE CHARLES CHEMICAL COMPLEX WESTLAKE, LA 2869 080802060302 Hexachlorobenzene 39,889
NJ0005100 E I DUPONT DE NEMOURS - CHAMBERS WORKS DEEPWATER, NJ 2869 020402060103 Heptachlor epoxide 30,038
NC0003760 KINSTON PLANT GRIFTON, NC 2824 030202020307 Hexachlorobenzene 18,838
NJ0005100 E I DUPONT DE NEMOURS - CHAMBERS WORKS DEEPWATER, NJ 2869 020402060103 Fluoride, total (as F) 16,595
MA0026883 AVON CUSTOM MIXING SERVICE HOLBROOK, MA 2869 010900040102 Chlorine, total residual 13,964
NC0003573 KURARAY AMERICA FAYETTEVILLE, NC 2821 030300050102 Fluoride, total (as F) 13,918
TX0077577 INEOS NITRILES USA LLC - GREEN LAKE PLANT PORT LAVACA, TX 2869 121004030100 Chlorine, total residual 13,271

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