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Clean Water Act discharge permit · NPDES SD0025437

T & R ELECTRIC SUPPLY CO., INC., Colman, SD: NPDES SD0025437 discharge permit, effluent exceedances, inspections, penalties

T & R ELECTRIC SUPPLY CO., INC., held by T & R Electric Supply Co., Inc., holds NPDES permit SD0025437, which discharges to Unnamed Trib Of Bachelor Creek. EPA’s file records it issued February 25, 2008 and expiring March 31, 2013. The status and dates are as EPA’s permit file stood when Velarion loaded it (October 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

Identity

Facility as filedT & R ELECTRIC SUPPLY CO., INC.
Permittee as filedT & R Electric Supply Co., Inc.
NPDES IDSD0025437
Permit statusAdministratively continued (past its expiration date and still in force until reissued)
Permit typeIndividual permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
IssuedFebruary 25, 2008
Expiration dateMarch 31, 2013
Issuing agencySDDENR
AddressColman, SD 57017
Receiving waterUNNAMED TRIB OF BACHELOR CREEK
SubwatershedLower Bachelor Creek (HUC 101702030502)
NAICS335311 – Power, Distribution, and Specialty Transformer Manufacturing
SIC3612 – Transformers, Except Electronic
Other EPA IDs (FRS)RCRA handler SDD024313561; ICIS-AIR source SD0000004610100001

Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download; cross-program IDs from EPA’s FRS facility-registry crosswalk.

Effluent limits and exceedances

An effluent exceedance is a discharge monitoring report value over the permit’s numeric limit (EPA’s violation code E90). A violation of any kind also counts a report not filed. Each row is EPA’s own count for that pollutant.

Pollutant or measureLimitsViolations, any kindEffluent exceedancesLatest exceedanceLargest exceedance, as filed
pH2107July 31, 2026
Solids, total suspended286June 30, 200153% over the limit
Flow rate220
Hydrocarbons, petroleum020
Polychlorinated biphenyls [PCBs]110
Floating solids, waste or visible foam-visual110
Oil & Grease010
Duration010
Flow, in conduit or thru treatment plant010
Flow, total010
Oil and grease visual010
Flow, total100
Duration of discharge100
Hydrocarbons, total petroleum100
Pass/Fail Static Renewal 48Hr Acute Ceriodaphnia dubia100
Pass/Fail Static Renewal 96Hr Acute Pimephales Promelas100

Cited to the EPA ICIS-NPDES limits and effluent violations files (ECHO download); up to 60 rows shown, most exceedances first.

Inspections, violations and enforcement

EPA’s single-event violation file, as loaded, holds no violation for NPDES SD0025437.

Velarion’s copy of EPA’s ICIS-NPDES files does not include the inspections, formal enforcement actions and informal enforcement actions files, so this page shows none of them. EPA’s free Detailed Facility Report on ECHO lists this permit’s inspections, enforcement actions and penalties.

Cited to the EPA ICIS-NPDES violation, inspection and enforcement files (ECHO download); up to 50 rows of each shown, newest first.

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EPA publishes a free Detailed Facility Report for every permit on ECHO: its compliance status quarter by quarter, its inspections, and its enforcement actions and penalties. EPA also sends free notices of new inspections and enforcement actions through ECHO Notify; enter NPDES ID SD0025437 there.

Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.

What this page shows

This public-records page covers the NPDES discharge permit SD0025437 held by T & R Electric Supply Co., Inc. in Colman, SD, which discharges to Unnamed Trib Of Bachelor Creek and is administratively continued as a Minor Discharger class permit. The page lists 2 pollutants under a numeric limit and 2 pollutants with an effluent exceedance, with the permit issued February 25, 2008 and expiring March 31, 2013.