Velarion Records
Follow this permit Velarion Records emails you this permit’s record, cited to the public filing, and tells you when the register changes it. Free.
We’ll email you a link to confirm. The continuous daily watch on every change is the paid alert. Unsubscribe any time.
Also free: The Pay Desk, the weekly executive pay briefing.

Clean Water Act discharge permit · NPDES MNG250002

AACRON INC, Plymouth, MN: NPDES MNG250002 discharge permit, effluent exceedances, inspections, penalties

AACRON INC, held by Elmer Schumer, holds NPDES permit MNG250002. EPA’s file records it issued April 1, 2020 and expiring January 31, 2025. 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 filedAACRON INC
Permittee as filedElmer Schumer
NPDES IDMNG250002
Permit statusAdministratively continued (past its expiration date and still in force until reissued)
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
IssuedApril 1, 2020
Expiration dateJanuary 31, 2025
Issuing agencySTA
AddressPlymouth, MN 55447
Receiving water impaired303(D) Listed
SubwatershedMedicine Lake (HUC 070102060501)
SIC3471 – Plating And Polishing
Other EPA IDs (FRS)RCRA handler MNR000007344; ICIS-AIR source MN0000002705300200

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
Phosphorus, total [as P]54323February 28, 2023227% over the limit
Flow, in conduit or thru treatment plant431December 31, 199310% over the limit
pH420
Temperature, water deg. fahrenheit210

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 MNG250002.

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.

Watch this permit

One permit holder, $99/month. Watch the register for one permit holder and the places and receiving waters tied to its permits. Choose “One permit holder” and enter this permit’s NPDES ID, MNG250002.

Start the watch

How often?
  • One permit holder — $99/month
  • One watershed — $2,990/year
  • One state — $4,990/year
  • The whole register — $18,000/year

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 MNG250002 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 NPDES permit MNG250002, held by AACRON INC in Plymouth, MN, with the permittee listed as Elmer Schumer, and it reports the permit as administratively continued with a Minor Discharger class of 4. The page lists 2 pollutants under a numeric limit and 2 pollutants with an effluent exceedance, with dates taken from EPA's permit file as of October 14, 2026.