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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 - Paving and roofing materials (tars and asphalt) (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
Chlorine, total residual 303 70.2 70.2
Iron, total recoverable 93.8 21.7 91.9
Zinc, total recoverable 17.5 4.056 96.03
Lead, total recoverable 8.17 1.89 97.9
Copper, total recoverable 5.91 1.36 99.2
Aluminum, total (as Al) 0.92 0.21 99.5
Iron, total (as Fe) 0.64 0.14 99.6
Zinc, total (as Zn) 0.58 0.13 99.7
Lead, total (as Pb) 0.44 0.102 99.8
Copper, total (as Cu) 0.25 0.059 99.9

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Top Receiving Watersheds (2011)
HUC-12 Code HUC Name Total DMR TWPE (lb-eq/yr)
020301040205 Upper Bay-The Narrows 9.32

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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)
NY0161942 PENN CAN ASPHALT MATERIALS LYONS, NY 2951 041402011403 Total Residual Chlorine 303
IN0051667 GAF BUILDING MATERIALS MFG CORP MOUNT VERNON, IN 2952 051201130709 Iron 92.6
IN0051667 GAF BUILDING MATERIALS MFG CORP MOUNT VERNON, IN 2952 051201130709 Zinc 17.5
NJ0002089 IMTT TERMINAL BAYONNE, NJ 2951 020301040205 Lead 8.17
IN0051667 GAF BUILDING MATERIALS MFG CORP MOUNT VERNON, IN 2952 051201130709 Copper 5.91
NJ0002089 IMTT TERMINAL BAYONNE, NJ 2951 020301040205 Iron 1.14
IL0070343 MEREDOSIA TERMINAL MEREDOSIA, IL 2951 071300110302 Iron 0.64
NY0007145 VANBRO CORPORATION STATEN ISLAND, NY 2951 020301040204 Zinc 0.58
NY0007145 VANBRO CORPORATION STATEN ISLAND, NY 2951 020301040204 Lead 0.44

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