Clean Air Act stationary source · ICIS-AIR WI0000005507900199
APPLETON GRP LLC, South Milwaukee, WI: Clean Air Act compliance record, inspections, violations, penalties
- OperatingOperating status
- Major sourceEmissions classification
- Violation w/in 1 YearCurrent violation status, as filed
- 7Compliance evaluations since January 1, 2017
- 0High-priority violations since January 1, 2017
- 0Formal enforcement actions since January 1, 2017
APPLETON GRP LLC, at 2105 5TH AVE, South Milwaukee in Monroe County, Wisconsin, is an operating major source of air pollution on EPA’s ICIS-AIR register. EPA’s file records its current violation status (ICIS-AIR’s high-priority violation field) as “Violation w/in 1 Year”. The status and classification are as EPA’s facility file stood when Velarion loaded it (September 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the source’s current standing, quarter by quarter.
Identity
| Facility as filed | APPLETON GRP LLC |
|---|---|
| ICIS-AIR ID | WI0000005507900199 |
| EPA facility registry ID | 110000417852 |
| Operating status | Operating |
| Emissions classification | Major source |
| Current violation status (ICIS-AIR high-priority violation field) | Violation w/in 1 Year |
| Address | 2105 5TH AVE, South Milwaukee, WI 531722734 |
| County | Monroe County |
| In a nonattainment county | No (EPA Green Book) |
| Industry (NAICS) | Primary metal manufacturing (NAICS 3315) |
| EPA region | 05 |
Cited to the EPA ICIS-AIR facility file (ECHO download).
Programs and pollutants
Velarion’s copy of EPA’s ICIS-AIR download does not yet include its program, pollutant and Title V certification files, so this page does not list the Clean Air Act programs APPLETON GRP LLC is under or the pollutants it is permitted for. The programs each evaluation and violation below was recorded under are shown with it. EPA’s free Detailed Facility Report lists both.
Compliance evaluations
- 7Evaluations since January 1, 2017
- 5Full compliance evaluations
| Date | What EPA recorded | Agency | Programs |
|---|---|---|---|
| July 21, 2026 | PCE Off-Site | State | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| July 1, 2026 | PCE On-Site | U.S. EPA | MACT Standards (40 CFR Part 63) |
| January 13, 2026 | FCE On-Site | State | Title V Permits |
| March 11, 2024 | FCE On-Site | State | Title V Permits |
| April 26, 2022 | FCE On-Site | State | Title V Permits |
| March 4, 2020 | FCE On-Site | State | Title V Permits |
| January 3, 2018 | FCE On-Site | State | Title V Permits |
Violations
- 2Violation determinations since January 1, 2017
- 0Of them high-priority
A high-priority violation (HPV) is the most serious class of Clean Air Act non-compliance an agency records; a federally reportable violation (FRV) is the next step down. Each row is one determination as EPA’s violation history files it.
| Date | What EPA recorded | Agency | Programs |
|---|---|---|---|
| July 21, 2026 | Earliest FRV determination | State | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| July 21, 2026 | Earliest FRV determination | State | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
Enforcement and penalties
0 formal enforcement actions since January 1, 2017, 0 of them with a penalty filed above zero. Each penalty is shown as EPA’s formal action file states it; “Not stated” means the file gives no figure, and $0 is a disclosed zero.
Informal enforcement
| Date | What EPA recorded | Agency |
|---|---|---|
| August 31, 2026 | Other Response - No Further Action | U.S. EPA |
| July 30, 2026 | Warning Letter | State |
Stack tests
- 5Stack tests since January 1, 2017
- 0Recorded as failed
| Date | What EPA recorded | Agency |
|---|---|---|
| September 9, 2025 | Pass | State |
| September 27, 2023 | Pass | State |
| October 28, 2021 | Pass | State |
| February 11, 2019 | Pass | State |
| March 23, 2017 | Pass | State |
Cited to the EPA ICIS-AIR evaluation, violation, stack test and enforcement files (ECHO download), events dated January 1, 2017 or later as loaded; up to 50 rows of each shown, newest first.
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EPA publishes a free Detailed Facility Report for every source on ECHO: its compliance status quarter by quarter, its evaluations, and its violations, enforcement actions and penalties. EPA also sends free notices of new inspections and enforcement actions through ECHO Notify; enter EPA facility registry ID 110000417852 there.
Nearby on the register
- Air-emissions sources in Monroe County
- Every source record in Monroe County, A to Z
- Air-emissions sources in Wisconsin
- Every source record in Wisconsin, A to Z
Figures from EPA’s ICIS-AIR download, loaded September 14, 2026.