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Discharge Monitoring Report (DMR) Pollutant Loading Tool

The Loading Tool is being transitioned into ECHO to increase user access to data and streamline site maintenance. The beta version is now available for testing. EPA plans to retire this site in late November 2017. Current site functionality will be available in ECHO.

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 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.

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) (2017)
Pollutant Name Total DMR TWPE (lb-eq/yr) % of Category TWPE Cumulative % of
Category TWPE
Copper 30.3 47.1 47.1
Total Residual Chlorine 20.7 32.2 79.3
Zinc 5.84 9.087 88.3
Aluminum 3.55 5.52 93.9
Lead 1.97 3.071 96.9
Sulfate 1.23 1.91 98.9
Iron 0.41 0.64 99.5
Chloride 0.102 0.15 99.7
Ammonia as N 0.045 0.0701 99.7
Cadmium 0.036 0.056 99.8

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Top Receiving Watersheds (2017)
HUC-12 Code HUC Name Total DMR TWPE (lb-eq/yr)
051201130709 Indian Creek-Big Creek 45.6
020600030805 Deep Run-Liberty Lake-North Branch Patapsco River 11.05
051201040502 Otter Creek-Eel River 1.94
050200020304 Lost Creek 1.23
102600120103 Plotner Creek-Deer Creek 1.23
010900010704 Charles River-Frontal Boston Harbor 0.55
071300110807 Buckhorn Creek-Illinois River 0.403
051202011205 Dollar Hide Creek-White River 0.0205
051202011005 Delaware Creek-Crooked Creek 0.00405
071300010202 Pecumsaugan Creek 0.00017

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Top Facility Discharges in Toxic-Weighted Pounds (TWPE) (2017)
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 Copper 30.2
MD0001384 CONGOLEUM CORPORATION FINKSBURG, MD 3996 020600030805 Total Residual Chlorine 11.05
IN0051667 GAF BUILDING MATERIALS MFG CORP MT VERNON, IN 2952 051201130709 Total Residual Chlorine 9.59
IN0051667 GAF BUILDING MATERIALS MFG CORP MT VERNON, IN 2952 051201130709 Zinc 5.82
TX0005479 MARTIN ASPHALT-SOUTH HOUSTON SOUTH HOUSTON, TX 2951 120402050100 Aluminum 2.206
IN0063797 LAKETON REFINING CORP LAKETON, IN 2951 051201040502 Lead 1.94
KS0001392 TAMKO BUILDING PRODUCTS, INC. PHILLIPSBURG, KS 2952 102600120103 Sulfate 1.23
WV0112283 ALCON BUCKHANNON, WV 2951 050200020304 Aluminum 0.95
MA0003531 CERTAINTEED ROOFING BUILDING PRODUCTS NORWOOD, MA 2952 010900010704 Aluminum 0.40007
IL0070343 MEREDOSIA TERMINAL MEREDOSIA, IL 2951 071300110807 Iron 0.27

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