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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 - 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 434,825  Original TRI load is 485,264 0 434,825 77.4 77.4
POLYCYCLIC AROMATIC COMPOUNDS 42,748 410 43,158 7.68 85.1
HEXACHLOROBENZENE 23,373 0 23,373 4.16 89.2
NITRATE COMPOUNDS 15,570 7.36 15,577 2.77 92.05
MERCURY AND MERCURY COMPOUNDS 12,703 148 12,851 2.28 94.3
LEAD AND LEAD COMPOUNDS 4,846 5,264 10,110 1.8004 96.1
NICKEL AND NICKEL COMPOUNDS 1,257 4,964 6,221 1.107 97.2
SELENIUM AND SELENIUM COMPOUNDS 5,184 0 5,184 0.92 98.1
ZINC AND ZINC COMPOUNDS 1,399 91.9 1,491 0.26 98.4
HYDROGEN CYANIDE 1,112 321 1,433 0.25 98.6

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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 99,517 0 99,517
070102060901 Schmidt Lake-Mississippi River 50,364  Original load is 100,802 1.21 50,365
120401040703 Vince Bayou-Buffalo Bayou 35,682 365 36,047
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
111303030708 Outlet Caddo Creek 17,569 0 17,569
121102020107 Tule Lake 6,643 0 6,643
120401040706 Goose Creek-Frontal Galveston Bay 6,328 0 6,328

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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)
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 PHILLIPS 66 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 180701040601 DIOXIN AND DIOXIN-LIKE COMPOUNDS 20,072 0 20,072
73401TTLPTHIGHW VALERO REFINING CO -OKLAHOMA VALERO ARDMORE REFINERY ARDMORE, OK 324110 111303030708 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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