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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
Chlorine, total residual 42,220  Original DMR load is 151,245 9.61 9.61
Mercury, total (as Hg) 110,237 25.09 34.7
Heptachlor epoxide 55,712 12.6 47.3
Cyanide, free (amen. to chlorination) 54,031 12.3 59.6
2,3,7,8-Tetrachlorodibenzo-p-dioxin 38,253 8.708 68.4
Aldrin 16,859 3.83 72.2
Dieldrin 15,933 3.62 75.8
Silver, total (as Ag) 15,342 3.49 79.3
Fluoride, total (as F) 14,141 3.21 82.5
Chloride (as Cl) 9,861 2.24 84.8

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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 54,397
020402020507 Woodbury Creek-Delaware River 26,619
060101020704 Kendrick Creek-South Fork Holston River 15,127
120401040703 Vince Bayou-Buffalo Bayou 13,107
120401040704 Jackson Bayou-San Jacinto River 11,245
050500060405 Rush Creek-Kanawha River 6,708
040802010606 Sarle Drain-Tittabawassee River 3,840
080802060302 Bayou Verdine-Calcasieu River 2,417
050901010103 Long Run-Ohio River 2,219

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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 109,087
TX0006017 CELANESE LTD BAY CITY PLANT BAY CITY, TX 2869 120903020207 Total Residual Chlorine  Original DMR load is 109,025
NY0260738 PORT TERMINAL LTD ALBANY, NY 5169 020200060305 Cyanide 54,015
NJ0005100 DUPONT CHAMBERS WORKS DEEPWATER, NJ 2869 020402060103 Heptachlor epoxide 36,170
NJ0005134 GEO SPECIALTY CHEMICALS INC GIBBSTOWN, NJ 2869 020402020507 2,3,7,8-Tetrachlorodibenzo-p-dioxin 20,155
SC0002682 WEYLCHEM US INC ELGIN, SC 2869 030501040401 Heptachlor epoxide 19,541
WV0116181 A.K.A. SOLUTIA NITRO SITE NITRO, WV 2869 050500080304 2,3,7,8-Tetrachlorodibenzo-p-dioxin 18,097
SC0002682 WEYLCHEM US INC ELGIN, SC 2869 030501040401 Aldrin 15,040
SC0002682 WEYLCHEM US INC ELGIN, SC 2869 030501040401 Dieldrin 14,154

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