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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 (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
2,3,7,8-Tetrachlorodibenzo-p-dioxin 273,765 61.8 61.8
Methylmercury 77,315 17.4 79.3
PCBs Dry Weather Analysis 21,834 4.93 84.2
Aluminum, total (as Al) 13,403 3.028 87.2
Selenium, total (as Se) 10,067 2.27 89.5
Benzene 7,899 1.78 91.3
Selenium, total recoverable 4,423 0.99 92.3
Silver, total (as Ag) 3,420 0.77 93.1
Zinc, total (as Zn) 2,827 0.63 93.7
Glycol, total 2,383 0.53 94.3

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Top Receiving Watersheds (2011)
HUC-12 Code HUC Name Total DMR TWPE (lb-eq/yr)
180500010401 Suisun Bay Estuaries 274,069
180500021002 Richardson Bay-San Francisco Bay 77,020
020402020607 Repaupo Creek-Delaware River 35,692
121102020107 Tule Lake 5,067
020402031008 City of Philadelphia-Schuylkill River 4,684
070102060903 Spring Lake-Mississippi River 4,223
180701040500 Manhattan Beach-Frontal Santa Monica Bay 3,691
080802060302 Bayou Verdine-Calcasieu River 3,579
110701030207 Claymore Creek-Verdigris River 3,106
041000100706 Otter Creek-Frontal Lake Erie 1,901

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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)
CA0004961 TESORO GOLDEN EAGLE REFINERY MARTINEZ, CA 2911 180500010401 2,3,7,8-Tetrachlorodibenzo-p-dioxin 273,723
CA0005134 CHEVRON RICHMOND REFINERY RICHMOND, CA 2911 180500021002 Methylmercury 77,020
PA0012637 MONROE ENERGY TRAINER REFINERY TRAINER, PA 2911 020402020607 Polychlorinated biphenyls 21,756
PA0012637 MONROE ENERGY TRAINER REFINERY TRAINER, PA 2911 020402020607 Aluminum 11,426
MN0000418 FLINT HILLS RESOURCES PINE BEND LLC ROSEMOUNT, MN 2911 070102060903 Selenium 4,217
CA0000337 CHEVRON EL SEGUNDO REFINERY EL SEGUNDO, CA 2911 180701040500 Selenium 3,492
TX0007536 PHILLIPS 66 SWEENY COMPLEX OLD OCEAN, TX 2911 120904020400 Selenium 2,633
NY0008109 J F K INTL AIRPORT JAMAICA, NY 5171 020302020102 Ethylene glycol 2,357

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