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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 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 - Waste combustors (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
Cadmium 2,930 55.7 55.7
Arsenic 649 12.3 68.04
Selenium 561 10.6 78.7
Silver 288 5.47 84.1
Lead 221 4.205 88.3
Aluminum 120  Original DMR load is 117 2.27 90.6
Zinc 112  Original DMR load is 108 2.13 92.7
Nickel 82.8  Original DMR load is 81.7 1.57 94.3
Fluoride 80.3 1.52 95.8
Mercury 72.09 1.37 97.2

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Top Receiving Watersheds (2011)
HUC-12 Code HUC Name Total DMR TWPE (lb-eq/yr)
120401040703 Vince Bayou-Buffalo Bayou 4,925
080401020502 Deceiper Creek-Ouachita River 80.6
020402020606 Raccoon Creek 27.1
050301011103 Carpenter Run-Ohio River 26.9
060102070405 Clinch River Outlet 12.6
111402050203 Heirs Branch-Bodcau Creek 3.35
110702070606 Grove Creek-Center Creek 0.14
050301030703 Lower Meander Creek 0.0085
010900010901 Monatiquot River-Frontal Quincy Bay 7.45  Original DMR load is 0.0055

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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)
TX0005941 CLEAN HARBORS DEER PARK LLC LA PORTE, TX 4953 120401040703 Cadmium 2,901
TX0005941 CLEAN HARBORS DEER PARK LLC LA PORTE, TX 4953 120401040703 Arsenic 633
TX0005941 CLEAN HARBORS DEER PARK LLC LA PORTE, TX 4953 120401040703 Selenium 561
TX0005941 CLEAN HARBORS DEER PARK LLC LA PORTE, TX 4953 120401040703 Silver 282
TX0005941 CLEAN HARBORS DEER PARK LLC LA PORTE, TX 4953 120401040703 Lead 195
TX0083828 VEOLIA ES TECHNICAL SOLUTIONS LLC PORT ARTHUR FACILITY PORT ARTHUR, TX 4953 120402010100 Aluminum 117
TX0005941 CLEAN HARBORS DEER PARK LLC LA PORTE, TX 4953 120401040703 Zinc 103
AR0000531 REYNOLDS METALS COMPANY LLC - GUM SPRINGS PLANT ARKADELPHIA, AR 4953 080401020502 Fluoride 80.3
TX0005941 CLEAN HARBORS DEER PARK LLC LA PORTE, TX 4953 120401040703 Nickel 78.8
TX0005941 CLEAN HARBORS DEER PARK LLC LA PORTE, TX 4953 120401040703 Chromium, Hexavalent 65.6

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