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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 - Leather tanning and finishing (TRI)

EPA 304M Annual Review icon — Indicates load was altered by EPA’s 304M Annual Review. You can hover over the green flag to see the original load from the TRI data.

Top Chemicals - Toxic-Weighted Pounds (TWPE) (2011)
Chemical Name Direct TRI TWPE (lb-eq/yr) Indirect TRI TWPE (lb-eq/yr) Total TRI TWPE (lb-eq/yr) % of Category TWPE Cumulative % of
Category TWPE
AMMONIA 7.703 204 95.9 5.057 5.057
CHROMIUM AND CHROMIUM COMPOUNDS 0.35 989 75.1 3.96 9.018
MANGANESE AND MANGANESE COMPOUNDS 0 697 22.09 1.16 10.1

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Top Receiving Watersheds (2011)
HUC-12 Code HUC Name Direct TRI TWPE (lb-eq/yr) Indirect TRI TWPE (lb-eq/yr) Total TRI TWPE (lb-eq/yr)
020502010408 Curwensville Dam-West Branch Susquehanna River 7.703 0 7.703
070801020402 Middle Crane Creek 0 57.5 0
102400110103 Roys Branch-Missouri River 0 51.1 0
071401010401 Maline Creek-Mississippi River 0 624 0

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Top Facility Discharges in Toxic-Weighted Pounds (TWPE) (2011)
TRI Facility ID Facility Name City, State NAICS Code HUC-12 Code Top Chemical Top Chemcical Direct TRI TWPE (lb-eq/yr) Top Chemcical Indirect TRI TWPE (lb-eq/yr) Top Chemcical Total TRI TWPE (lb-eq/yr)
55075TWNCT501MA TWIN CITY TANNING CO LLP SOUTH SAINT PAUL, MN 316110 AMMONIA 0 88.2 88.2
55075TWNCT501MA TWIN CITY TANNING CO LLP SOUTH SAINT PAUL, MN 316110 CHROMIUM AND CHROMIUM COMPOUNDS 0 40.3 40.3
53233GBHRD2615W D R DIEDRICH & CO LTD MILWAUKEE, WI 316110 CHROMIUM AND CHROMIUM COMPOUNDS 0.35 34.5 34.8
55075TWNCT501MA TWIN CITY TANNING CO LLP SOUTH SAINT PAUL, MN 316110 MANGANESE AND MANGANESE COMPOUNDS 0 22.09 22.09
16833WCKTT120CO WICKETT & CRAIG OF AMERICA CURWENSVILLE, PA 316110 020502010408 AMMONIA 7.703 0 7.703
53208THLTN123N2 THIELE TANNING MILWAUKEE, WI 316110 FORMIC ACID 0 0 0
37388TNNSS915NA TENNESSEE TANNING CO TULLAHOMA, TN 316110 FORMIC ACID 0 0 0
60614HRWNL2015N HORWEEN LEATHER CO CHICAGO, IL 316110 MANGANESE AND MANGANESE COMPOUNDS 0 42.6 0
53207WBPLC368WS TASMAN HARTFORD HARTFORD, WI 316110 CHROMIUM AND CHROMIUM COMPOUNDS 0 2.89 0
60614HRWNL2015N HORWEEN LEATHER CO CHICAGO, IL 316110 CHROMIUM AND CHROMIUM COMPOUNDS 0 149 0

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