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Clean Water Act discharge permit · NPDES SDPIU001U

HIGH PLAINS PROCESSING LLC., Mitchell, SD: NPDES SDPIU001U discharge permit, effluent exceedances, inspections, penalties

HIGH PLAINS PROCESSING LLC., held by High Plains Processing LLC., holds NPDES permit SDPIU001U. EPA’s file records it issued October 1, 2025 and expiring December 31, 2029. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

What the register holds for HIGH PLAINS PROCESSING LLC.: its NPDES ID, its permit type and status, its dates, its address in Mitchell, South Dakota. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES SDPIU001U.

Identity

Facility as filedHIGH PLAINS PROCESSING LLC.
Permittee as filedHigh Plains Processing LLC.
NPDES IDSDPIU001U
Permit statusEffective
Permit typeIndividual industrial user permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
IssuedOctober 1, 2025
Expiration dateDecember 31, 2029
Issuing agencyMitchell, City Of
AddressMitchell, SD 57300
Other EPA IDs (FRS)ICIS-AIR source SD0000004603500063

Cited to the EPA ICIS-NPDES permit file (ECHO download); cross-program IDs from EPA’s FRS facility-registry crosswalk.

Effluent limits and exceedances

EPA’s limits and effluent violation files hold no pollutant row for NPDES SDPIU001U.

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 SDPIU001U.

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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How we handle your data → Privacy

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 SDPIU001U there.

Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.

What this page shows

This public-records page covers Clean Water Act NPDES permit SDPIU001U, held by HIGH PLAINS PROCESSING LLC. in Mitchell, South Dakota, and lists its status as Effective with the permit issued October 1, 2025 and expiring December 31, 2029. The page reports 0 pollutants under a numeric limit and 0 pollutants with an effluent exceedance, with no effluent or single-event violations on file for this permit.