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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 - 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
Polychlorinated biphenyls (PCBs) 7,957 59.1 59.1
Cadmium, total (as Cd) 2,968 22.05 81.1
Arsenic, total (as As) 742 5.51 86.6
Selenium, total (as Se) 561 4.16 90.8
Silver, total (as Ag) 287 2.13 92.9
Lead, total (as Pb) 212 1.57 94.5
Aluminum, total (as Al) 128  Original DMR load is 128 0.94 95.5
Zinc, total (as Zn) 106  Original DMR load is 106 0.78 96.2
Fluoride, total (as F) 80.3 0.59 96.8
Nickel, total (as Ni) 78.9  Original DMR load is 78.9 0.58 97.4

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Top Receiving Watersheds (2011)
HUC-12 Code HUC Name Total DMR TWPE (lb-eq/yr)
120401040703 Vince Bayou-Buffalo Bayou 5,073
080402020501 Boggy Creek 52.2
010900010901 Monatiquot River-Frontal Quincy Bay 0.089  Original DMR load is 0.012

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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)
NJ0005240 LAIDLAW ENVIRONMENTAL SERVICES BRIDGEPORT, NJ 4953 Polychlorinated biphenyls 7,957
TX0005941 CLEAN HARBORS DEER PARK LLC LA PORTE, TX 4953 120401040703 Cadmium 2,941
TX0005941 CLEAN HARBORS DEER PARK LLC LA PORTE, TX 4953 120401040703 Arsenic 737
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 Aluminum 128
TX0005941 CLEAN HARBORS DEER PARK LLC LA PORTE, TX 4953 120401040703 Zinc 103
AR0000531 REYNOLDS METALS CO-GUM SPRINGS ARKADELPHIA, AR 4953 080401020502 Fluoride 80.3
TX0005941 CLEAN HARBORS DEER PARK LLC LA PORTE, TX 4953 120401040703 Nickel 78.8

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