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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 - Petroleum refining (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 434,820  Original TRI load is 485,259 0 434,820 77.0003 77.0003
POLYCYCLIC AROMATIC COMPOUNDS 42,356 313 42,356 7.5006 84.5
HEXACHLOROBENZENE 23,373 0 23,373 4.13 88.6
NITRATE COMPOUNDS 16,837 9.303 16,842 2.98 91.6
MERCURY AND MERCURY COMPOUNDS 12,789 148 12,804 2.26 93.8
LEAD AND LEAD COMPOUNDS 4,774 5,293 9,103 1.61 95.5
NICKEL AND NICKEL COMPOUNDS 1,217 4,966 6,119 1.083 96.5
SELENIUM AND SELENIUM COMPOUNDS 5,184 0 5,184 0.91 97.5
ANTHRACENE 2,459 19.6 2,460 0.43 97.9
ZINC AND ZINC COMPOUNDS 1,247 94.3 1,254 0.22 98.1

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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)
120402040200 Dickinson Bayou 98,978 0 98,978
070102060901 Schmidt Lake-Mississippi River 50,364  Original load is 100,802 1.21 50,365
120401040703 Vince Bayou-Buffalo Bayou 35,498 365 35,507
071200040905 Des Plaines River 32,846 0 32,846
100700041006 Yellowstone River-Billings 25,219 0 25,219
180500020801 San Pablo Bay Islands 24,890 0 24,890
051201111402 Minnow Slough 13,808 9,220 23,028
111302010602 Cottonwood Creek 17,569 0 17,569
120401040706 Goose Creek-Frontal Galveston Bay 6,328 0 6,328
050200050806 Piney Fork-Peters Creek 6,224 0 6,224

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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)
00851HSSLVLIMET HOVENSA LLC CHRISTIANSTED, VI 324110 210200020202 DIOXIN AND DIOXIN-LIKE COMPOUNDS 136,722 0 136,722
77590MRTHNFOOTO MARATHON PETROLEUM CO LP TEXAS CITY, TX 324110 120402040200 DIOXIN AND DIOXIN-LIKE COMPOUNDS 97,941 0 97,941
55071SHLND100WT ST PAUL PARK REFINING CO LLC SAINT PAUL PARK, MN 324110 070102060901 DIOXIN AND DIOXIN-LIKE COMPOUNDS 45,526  Original load is 95,965 0 45,526
77536DRPRK5900H DEER PARK REFINING LP DEER PARK, TX 324110 120401040703 DIOXIN AND DIOXIN-LIKE COMPOUNDS 34,253 0 34,253
59101CNCBL401SO CONOCOPHILLIPS CO BILLINGS REFINERY BILLINGS, MT 324110 100700041006 DIOXIN AND DIOXIN-LIKE COMPOUNDS 25,120 0 25,120
94802CHVRN841ST CHEVRON PRODUCTS CO RICHMOND REFINERY RICHMOND, CA 324110 180500020801 DIOXIN AND DIOXIN-LIKE COMPOUNDS 24,584 0 24,584
60434MBLJLINTER EXXONMOBIL OIL CORP JOL IET REFINERY CHANNAHON, IL 324110 071200040905 HEXACHLOROBENZENE 23,373 0 23,373
90245CHVRN324WE CHEVRON PRODUCTS CO DIV OF CHEVRON USA INC EL SEGUNDO, CA 324110 180701040301 DIOXIN AND DIOXIN-LIKE COMPOUNDS 20,072 0 20,072
73401TTLPTHIGHW VALERO REFINING CO -OKLAHOMA VALERO ARDMORE REFINERY ARDMORE, OK 324110 111302010602 DIOXIN AND DIOXIN-LIKE COMPOUNDS 17,506 0 17,506
84116CHVRN2351N CHEVRON PRODUCTS CO - SALT LAKE REFINERY SALT LAKE CITY, UT 324110 160202040405 DIOXIN AND DIOXIN-LIKE COMPOUNDS 13,571 0 13,571

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