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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 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.

Point Source Category Information - CCH (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 5,087,038 32,830 5,119,868 96.8 96.8
HEXACHLOROBENZENE 142,826 261 143,087 2.707 99.5
MERCURY AND MERCURY COMPOUNDS 9,796 3.56 9,799 0.18 99.7
COPPER AND COPPER COMPOUNDS 4,053 0 4,053 0.076 99.8
LEAD AND LEAD COMPOUNDS 2,109 170 2,278 0.043 99.8
1,2,3-TRICHLOROPROPANE 2,188 0 2,188 0.041 99.9
ALLYL ALCOHOL 916 0 916 0.017 99.9
NITRATE COMPOUNDS 651 0.201 651 0.012 99.9
MANGANESE AND MANGANESE COMPOUNDS 513 0 513 0.0097 99.9
ZINC AND ZINC COMPOUNDS 465 0.81 466 0.0088 99.9

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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)
080703000207 Bayou Bourbeaux 915,615 0 915,615
080903010210 Lac Des Allemands 656,020 0 656,020
080802060302 Bayou Verdine-Calcasieu River 490,365 0 490,365
050302011004 Haynes Run-Ohio River 218,136 0 218,136
120401040706 Goose Creek-Frontal Galveston Bay 162,361 0 162,361
080702010402 Devils Swamp-Bayou Baton Rouge 65,589 0 65,589
080703000401 Bayou La Butte-Logging Canal 49,105 0 49,105
060400060502 Guess Creek-Tennessee River 46,648 0 46,648
080702040201 St James Parish Canal 10,057 0 10,057
111403060411 Tete Bayou-Frontal Caddo Lake 7,835 0 7,835

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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 Chemical Direct TRI TWPE (lb-eq/yr) Top Chemical Indirect TRI TWPE (lb-eq/yr) Top Chemical Total TRI TWPE (lb-eq/yr)
77541THDWCBUILD DOW CHEMICAL CO FREEPORT FACILITY FREEPORT, TX 486990 120701040505 DIOXIN AND DIOXIN-LIKE COMPOUNDS 2,523,132 0 2,523,132
70765THDWCHIGHW THE DOW CHEMICAL CO - LOUISIANA OPERATIONS PLAQUEMINE, LA 325199 080703000207 DIOXIN AND DIOXIN-LIKE COMPOUNDS 864,620 0 864,620
70057CCDNTLAHWY OCCIDENTAL CHEMICAL CORP HAHNVILLE, LA 325180 080903010210 DIOXIN AND DIOXIN-LIKE COMPOUNDS 655,648 0 655,648
70669PPGNDCOLUM EAGLE US 2 LLC WESTLAKE, LA 325180 080802060302 DIOXIN AND DIOXIN-LIKE COMPOUNDS 486,578 0 486,578
26155PPGNDSTATE EAGLE NATRIUM LLC PROCTOR, WV 325180 050302011004 DIOXIN AND DIOXIN-LIKE COMPOUNDS 216,769 0 216,769
77571LPRTC2400M OXY VINYLS LP LA PORTE VCM PLANT LA PORTE, TX 325199 120401040706 DIOXIN AND DIOXIN-LIKE COMPOUNDS 160,303 0 160,303
77541THDWCBUILD DOW CHEMICAL CO FREEPORT FACILITY FREEPORT, TX 486990 120701040505 HEXACHLOROBENZENE 66,125 0 66,125
70805FRMSPGULFS FORMOSA PLASTICS CORP LOUISIANA BATON ROUGE, LA 325211 080702010402 DIOXIN AND DIOXIN-LIKE COMPOUNDS 65,450 0 65,450
70765THDWCHIGHW THE DOW CHEMICAL CO - LOUISIANA OPERATIONS PLAQUEMINE, LA 325199 080703000207 HEXACHLOROBENZENE 50,251 0 50,251
70765GRGGLHIGHW AXIALL LLC PLAQUEMINE, LA 325211 080703000401 DIOXIN AND DIOXIN-LIKE COMPOUNDS 48,004 0 48,004

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