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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 p, 7K).

Point Source Category Information - Transportation Equipment Cleaning (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
Chromium, hexavalent (as Cr) 845 49.7 49.7
Chlorine, total residual 219 12.9 62.6
Copper, total (as Cu) 159 9.35 72.02
Chromium, total (as Cr) 121 7.15 79.1
Cadmium, total (as Cd) 101 5.93 85.1
Nitrogen, ammonia total (as N) 59.9 3.53 88.6
Iron, total recoverable 49.1 2.89 91.5
Aluminum, total (as Al) 46.2 2.72 94.2
Iron, total (as Fe) 34.7 2.044 96.3
Manganese, total (as Mn) 23.9 1.41 97.7

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Top Receiving Watersheds (2011)
No pollutant discharge monitoring data found for this point source category.

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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)
MD0066818 DUNDALK MARINE TERMINAL BALTIMORE, MD 4491 020600031203 Chromium, Hexavalent 845
MD0057371 CSX - CHESAPEAKE BAY PIER BALTIMORE, MD 4491 020600031202 Copper 132
MD0066818 DUNDALK MARINE TERMINAL BALTIMORE, MD 4491 020600031203 Chromium 121
TX0100242 FISHING HARBOR WWTP BROWNSVILLE, TX 4491 121102080900 Total Residual Chlorine 107
NY0200484 CLEAN WATER OF NEW YORK INC STATEN ISLAND, NY 7699 020301040204 Cadmium 101
MO0082171 LODGE OF THE 4 SEASONS LAKESITES THE LAKE OZARK , MO 4491 102901090406 Total Residual Chlorine 74.5
AR0000361 TERRA NITROGEN LP BLYTHEVILLE, AR 4491 080101000602 Ammonia as N 53.8
NY0200484 CLEAN WATER OF NEW YORK INC STATEN ISLAND, NY 7699 020301040204 Total Residual Chlorine 36.1
OH0107301 PINNEY DOCK & TRANSPORT CO ASHTABULA, OH 4491 041201010606 Iron 33.8
AR0050083 KINDER-MORGAN BULK TERMINALS BLYTHEVILLE, AR 4491 080101000602 Aluminum 25.9

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