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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 (TRI)

EPA 304M Annual Review icon — Indicates load was altered by EPA’s 304M Annual Review. You can hover over the green flag to see the original load from the TRI data.

Top Chemicals - Toxic-Weighted Pounds (TWPE) (2011)
Chemical Name Direct TRI TWPE (lb-eq/yr) Indirect TRI TWPE (lb-eq/yr) Total TRI TWPE (lb-eq/yr) % of Category TWPE Cumulative % of
Category TWPE
DIOXIN AND DIOXIN-LIKE COMPOUNDS 24,984  Original TRI load is 65,488 0 24,984 17.2 17.2
NITRATE COMPOUNDS 13,132 1,030 13,173 9.072 26.2
COPPER AND COPPER COMPOUNDS 10,084 178 10,160 6.99 33.2
CADMIUM AND CADMIUM COMPOUNDS 7,580 13.8 7,580 5.22 38.4
POLYCYCLIC AROMATIC COMPOUNDS 7,496  Original TRI load is 93,661 32.5 7,496 5.16 43.6
COBALT AND COBALT COMPOUNDS 6,687 66.6 6,717 4.62 48.2
MANGANESE AND MANGANESE COMPOUNDS 6,453 525 6,478 4.46 52.7
HYDROQUINONE 5,582 3,212 5,582 3.84 56.5
ARSENIC AND ARSENIC COMPOUNDS 4,335 7.07 4,341 2.98 59.5
MERCURY AND MERCURY COMPOUNDS 3,144 4.37 3,147 2.16 61.7

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Top Receiving Watersheds (2011)
HUC-12 Code HUC Name Direct TRI TWPE (lb-eq/yr) Indirect TRI TWPE (lb-eq/yr) Total TRI TWPE (lb-eq/yr)
060101020704 Kendrick Creek-South Fork Holston River 12,938 15.05 12,953
080802060302 Bayou Verdine-Calcasieu River 10,718  Original load is 51,223 0 10,718
040802010606 Sarle Drain-Tittabawassee River 9,633 0 9,633
060300021102 Bakers Creek-Tennessee River 9,502 0.35 9,502
120401040703 Vince Bayou-Buffalo Bayou 8,406 9,577 8,406
020402060103 Salem Canal-Whooping John Creek 6,705 0 6,705
060300021104 Fox Creek 4,909 35.1 4,909
120401040706 Goose Creek-Frontal Galveston Bay 3,624 0 3,624
020802060201 Bailey Creek-James River 2,734 813 2,906
080901000101 Mississippi River-Bonnet Carre Spillway 2,727 0 2,727

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Top Facility Discharges in Toxic-Weighted Pounds (TWPE) (2011)
TRI Facility ID Facility Name City, State NAICS Code HUC-12 Code Top Chemical Top Chemcical Direct TRI TWPE (lb-eq/yr) Top Chemcical Indirect TRI TWPE (lb-eq/yr) Top Chemcical Total TRI TWPE (lb-eq/yr)
48667THDWCMICHI THE DOW CHEMICAL CO MIDLAND, MI 325199 040802010606 DIOXIN AND DIOXIN-LIKE COMPOUNDS 9,503 0 9,503
35601MNSNTCOURT ASCEND PERFORMANCE MATERIALS LLC - DECATUR PLANT DECATUR, AL 325199 060300021102 CADMIUM AND CADMIUM COMPOUNDS 7,580 0 7,580
77536SHLLLHIGHW SHELL CHEMICAL LP DEER PARK, TX 325110 120401040703 DIOXIN AND DIOXIN-LIKE COMPOUNDS 5,464 0 5,464
70669VSTCHOLDSP SASOL NORTH AMERICA INC LAKE CHARLES CHEMICAL COMPLEX WESTLAKE, LA 325199 080802060302 DIOXIN AND DIOXIN-LIKE COMPOUNDS 5,363  Original load is 45,868 0 5,363
70669VSTCHOLDSP SASOL NORTH AMERICA INC LAKE CHARLES CHEMICAL COMPLEX WESTLAKE, LA 325199 080802060302 POLYCYCLIC AROMATIC COMPOUNDS 5,134 0 5,134
37415NVSTS451NA INVISTA SA RL CHATTANOOGA, TN 325211 DIOXIN AND DIOXIN-LIKE COMPOUNDS 4,653 0 4,653
37662TNNSSEASTM EASTMAN CHEMICAL CO TENNESSEE OPERATIONS KINGSPORT, TN 325211 060101020704 ARSENIC AND ARSENIC COMPOUNDS 4,335 5.65 4,341
30903DSMCHNO1CO DSM CHEMICALS NORTH AMERICA INC AUGUSTA, GA 325199 030601060607 NITRATE COMPOUNDS 3,897 0 3,897
37662TNNSSEASTM EASTMAN CHEMICAL CO TENNESSEE OPERATIONS KINGSPORT, TN 325211 060101020704 HYDROQUINONE 3,620 0.304 3,620
08023DPNTCRT130 DUPONT CHAMBERS WORKS DEEPWATER, NJ 325110 020402060103 NITRATE COMPOUNDS 3,181 0 3,181

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