Clean Air Act stationary source · ICIS-AIR WI0000005501907859
WISCONSIN PROPPANTS - ALMA CENTER PLANT, Humbird, WI: Clean Air Act compliance record, inspections, violations, penalties
- OperatingOperating status
- Synthetic minor sourceEmissions classification
- Violation w/in 1 YearCurrent violation status, as filed
- 14Compliance evaluations since January 1, 2017
- 0High-priority violations since January 1, 2017
- 0Formal enforcement actions since January 1, 2017
WISCONSIN PROPPANTS - ALMA CENTER PLANT, at W11296 COUNTY LINE RD, Humbird in Clark County, Wisconsin, is an operating synthetic minor 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 | WISCONSIN PROPPANTS - ALMA CENTER PLANT |
|---|---|
| ICIS-AIR ID | WI0000005501907859 |
| EPA facility registry ID | 110070144510 |
| Operating status | Operating |
| Emissions classification | Synthetic minor source |
| Current violation status (ICIS-AIR high-priority violation field) | Violation w/in 1 Year |
| Address | W11296 COUNTY LINE RD, Humbird, WI 547468145 |
| County | Clark County |
| In a nonattainment county | No (EPA Green Book) |
| Industry (NAICS) | Mining and quarrying (NAICS 2123) |
| 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 include its program, pollutant and Title V certification files, so this page does not list the Clean Air Act programs WISCONSIN PROPPANTS - ALMA CENTER PLANT 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
- 14Evaluations since January 1, 2017
- 5Full compliance evaluations
| Date | What EPA recorded | Agency | Programs |
|---|---|---|---|
| July 29, 2026 | PCE Off-Site | State | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| August 13, 2024 | FCE On-Site | State | Title V Permits |
| August 23, 2023 | PCE On-Site | State | Title V Permits |
| November 4, 2021 | FCE On-Site | State | Title V Permits |
| June 30, 2020 | FCE On-Site | State | Title V Permits |
| August 15, 2019 | PCE Off-Site | State | Title V Permits |
| June 24, 2019 | FCE On-Site | State | Title V Permits |
| April 10, 2019 | PCE Off-Site | State | Title V Permits |
| January 18, 2019 | PCE Off-Site | State | Title V Permits |
| November 23, 2018 | PCE Off-Site | State | Title V Permits |
| July 31, 2018 | PCE Off-Site | State | Title V Permits |
| June 25, 2018 | FCE On-Site | State | Title V Permits |
| February 15, 2018 | PCE Off-Site | State | Title V Permits |
| December 1, 2017 | PCE Off-Site | State | Title V Permits |
Violations
- 4Violation 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 29, 2026 | Earliest FRV determination | State | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| July 29, 2026 | Earliest FRV determination | State | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| July 9, 2024 | Earliest FRV determination | State | Title V Permits |
| July 9, 2024 | Earliest FRV determination | State | Title V Permits |
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 |
|---|---|---|
| July 29, 2026 | Warning Letter | State |
| August 19, 2024 | Warning Letter | State |
Stack tests
- 0Stack tests since January 1, 2017
- 0Recorded as failed
EPA’s stack test file holds no test at ICIS-AIR WI0000005501907859 since January 1, 2017.
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.
Watch this source
One source, $99/month. A source: the register entry for a plant, refinery, kiln, generating station, or other fixed installation the agency tracks under the Clean Air Act. Choose “One source” and enter this source’s ICIS-AIR ID, WI0000005501907859.
Start the watch
- One source — $99/month
- One county — $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 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 110070144510 there.
Nearby on the register
- Air-emissions sources in Clark County
- Every source record in Clark 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.