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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 - 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
Copper, total recoverable 261 44.8 44.8
Iron, total recoverable 93.8 16.1 60.9
Arsenic, total recoverable 81.3 13.9 74.9
Nitrogen, ammonia total (as N) 47.2 8.12 83.08
Chlorine, total residual 40.2 6.91 89.9
Zinc, total recoverable 37.7 6.48 96.4
Lead, total recoverable 8.75 1.506 97.9
Aluminum, total (as Al) 4.47 0.77 98.7
Chloride (as Cl) 3.55 0.61 99.3
Nickel, total recoverable 1.026 0.17 99.5

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Top Receiving Watersheds (2011)
HUC-12 Code HUC Name Total DMR TWPE (lb-eq/yr)
050800020404 Dry Run-Great Miami River 320
020301040205 Upper Bay-The Narrows 90.09
020600030805 Deep Run-Liberty Lake-North Branch Patapsco River 0.31

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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)
OH0025275 FRANKLIN AREA WASTEWATER TREATMENT PLANT FRANKLIN, OH 2952 050800020404 Copper 259
IN0051667 BUILDING MATERIALS MANUFACTURI NG CORP MOUNT VERNON, IN 2952 051201130709 Iron 92.6
NJ0002089 EXXON CO USA BAYONNE PLANT @ IMTT TERMINAL BAYONNE, NJ 2951 020301040205 Arsenic 81.3
OH0025275 FRANKLIN AREA WASTEWATER TREATMENT PLANT FRANKLIN, OH 2952 050800020404 Ammonia as N 40.1
OH0000345 CERTAINTEED CORP MILAN, OH 2952 Total Residual Chlorine 33.8
OH0025275 FRANKLIN AREA WASTEWATER TREATMENT PLANT FRANKLIN, OH 2952 050800020404 Zinc 20.09
IN0051667 BUILDING MATERIALS MANUFACTURI NG CORP MOUNT VERNON, IN 2952 051201130709 Zinc 17.5
NJ0002089 EXXON CO USA BAYONNE PLANT @ IMTT TERMINAL BAYONNE, NJ 2951 020301040205 Lead 7.66
MS0049174 ATLAS ROOFING CORPORATION MERIDIAN, MS 2952 031700010603 Ammonia as N 7.000073
IN0051667 BUILDING MATERIALS MANUFACTURI NG CORP MOUNT VERNON, IN 2952 051201130709 Total Residual Chlorine 4.93

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