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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 - Oil & Gas Extraction (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
Sulfide, total (as S) 63,287 83.8 83.8
Copper, total (as Cu) 4,892 6.48 90.3
Chloride (as Cl) 2,221  Original DMR load is 2,199 2.94 93.2
Fluoride, total (as F) 829 1.098 94.3
Manganese, total recoverable 775 1.026 95.3
Molybdenum, potentially dissolved 711 0.94 96.3
Radium 226, total 701 0.92 97.2
Zinc, total (as Zn) 505 0.66 97.9
Silver total recoverable 463 0.61 98.5
Barium, total (as Ba) 420 0.55 99.1

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Top Receiving Watersheds (2011)
HUC-12 Code HUC Name Total DMR TWPE (lb-eq/yr)
120402030105 Ellis Branch-Cedar Bayou 5,382
050100030907 Lower Twomile Run-Allegheny River 1,537
100901010301 Tongue River-Beatty Gulch 860
020501050206 Knight Creek-Cohocton River 812
100800150104 Lower Soap Creek 285
100800020204 Bighorn Draw 205
100800050102 Maverick Spring-Fivemile Creek 126
041402010801 Hector Falls Creek-Seneca Lake 102
080903020804 Bayou Blue-Larose 88.5
121102020107 Tule Lake 67.7

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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)
WY0000779 MAVERICK SPRING TANK BATTERY / WY-99-16 CODY, WY 1311 Sulfide 63,023
TX0002887 MONT BELVIEU FRACTIONATOR MONT BELVIEU, TX 1311 120402030105 Copper 4,883
PA0101508 PA BRINE TRMT FAC FRANKLIN, PA 1389 050100030907 Chloride 1,094
NY0004278 INERGY MIDSTREAM LLC. SAVONA, NY 4925 020501050206 Chloride 812
MT0030724 TONGUE RIVER PROJECT DECKER, MT 1311 100901010301 Fluoride 781
AKG315002 HILCORP ALASKA, INC. - TRADING BAY TREATMENT FACILITY COOK INLET, AK 1311 Not found Manganese 749
CO0048816 LOGAN WASH MINE SITE DEBEQUE, CO 1311 Molybdenum 711
TX0002887 MONT BELVIEU FRACTIONATOR MONT BELVIEU, TX 1311 120402030105 Zinc 499
AKG315002 HILCORP ALASKA, INC. - TRADING BAY TREATMENT FACILITY COOK INLET, AK 1311 Not found Silver 441
PA0101508 PA BRINE TRMT FAC FRANKLIN, PA 1389 050100030907 Barium 420

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