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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 information on the methodology and types of changes identified, see EPA's most recent odd-numbered year Annual Effluent Guidelines Review Report (PDF) (169 pp, 2MB) on the Effluent Guidelines Plan webpage. Because of this review and EPA's methodology for interpreting data and calculating loads, the calculated loads and category rankings may differ from original calculations using DMR and TRI data that have not been updated. Data that have been updated by EPA's annual reviews are indicated by green flags designating that a change has been made to a concentration, quantity, or flow value. A listing of the DMR and TRI data changes from the most recent annual review is available in the Annual Effluent Guidelines Review Report Appendices (PDF) (241 pp, 3.3MB).

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
Iron 94.4 36.4 36.4
Arsenic 81.3 31.3 67.8
Total Residual Chlorine 40.2 15.5 83.3
Zinc 18.1 6.98 90.3
Lead 8.54 3.29 93.6
Ammonia as N 7.2006 2.77 96.4
Aluminum 4.47 1.72 98.1
Chloride 3.63 1.403 99.5
Ammonia as NH3 0.61 0.23 99.7
Nitrogen, nitrate dissolved 0.31 0.12 99.8

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Top Receiving Watersheds (2011)
HUC-12 Code HUC Name Total DMR TWPE (lb-eq/yr)
051201130709 Indian Creek-Big Creek 115
020301040205 Upper Bay-The Narrows 90.09
041000120606 Huron River-Frontal Lake Erie 33.8
071300110807 Buckhorn Creek-Illinois River 4.28
031602040505 Tensaw River-Apalachee River 2.34
010900010704 Charles River-Frontal Boston Harbor 0.92
020301040204 Morses Creek-Arthur Kill 0.83
110702070901 Turkey Creek 0.61
020600030805 Deep Run-Liberty Lake-North Branch Patapsco River 0.31
051201040502 Otter Creek-Eel River 0.12

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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)
IN0051667 GAF BUILDING MATERIALS MFG CORP MT VERNON, IN 2952 051201130709 Iron 92.6
NJ0002089 IMTT BAYONNE BAYONNE, NJ 2951 020301040205 Arsenic 81.3
OH0000345 CERTAINTEED CORP. MILAN, OH 2952 041000120606 Total Residual Chlorine 33.8
IN0051667 GAF BUILDING MATERIALS MFG CORP MT VERNON, IN 2952 051201130709 Zinc 17.5
NJ0002089 IMTT BAYONNE BAYONNE, NJ 2951 020301040205 Lead 7.66
MS0049174 ATLAS ROOFING CORP MERIDIAN, MS 2952 031700010503 Ammonia as N 7.000073
IN0051667 GAF BUILDING MATERIALS MFG CORP MT VERNON, IN 2952 051201130709 Total Residual Chlorine 4.93
TX0005479 MARTIN ASPHALT-SOUTH HOUSTON SOUTH HOUSTON, TX 2951 120402050100 Aluminum 3.55
IL0070343 MEREDOSIA TERMINAL MEREDOSIA, IL 2951 071300110807 Chloride 3.54
AL0003565 ARC TERMINALS HOLDINGS, LLC MOBILE, AL 2951 031602040505 Total Residual Chlorine 1.46

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