Data / Mines / Washington / Arp Portable Wash Plant #1
Arp Portable Wash Plant #1: 18 MSHA citations
Updated November 6, 2026. Source: US Department of Labor, Mine Safety and Health Administration (MSHA), Open Government Data Sets.
Arp Portable Wash Plant #1 is an intermittent construction sand and gravel surface mine in Grant County, Washington, operated by Interstate Concrete and Asphalt Company with 2 employees on MSHA's record (mine ID 4503391). Since January 1, 2022 MSHA inspectors issued 18 citations and orders there with $2,575 in proposed penalties, and 1 accident report was filed there, with 1 injury or illness case.
The request: Watch Arp Portable Wash Plant #1 (MSHA mine ID 4503391) in Grant County, Washington: each new citation and each accident report. $10 of work on sign-up, no card.
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- MSHA mine ID
- 4503391
- Status
- Intermittent since March 22, 2024
- Main commodity
- Construction sand and gravel
- Mine type
- Surface
- County
- Grant County, Washington
- Nearest town
- Ephrata
- Operator
- Interstate Concrete and Asphalt Company
- Parent company
- CRH PLC
- Employees
- 2
- MSHA field office
- Albany Or Field Office
- Citations and orders since January 1, 2022
- 18
- Significant and substantial
- 3 (16.7%)
- Closure orders
- 0
- High negligence or reckless
- 1
- Proposed penalties
- $2,575
- Amount paid so far
- $2,575
- Inspections
- 9
- Inspector hours on site
- 50
- Citations per inspection
- 2.00 (all mines 2.30)
- Accident reports
- 1
- Injury and illness cases
- 1
- Fatalities
- 0
- Latest MSHA record
- October 14, 2026
Citations and injury cases by year
Calendar years since 2022; 2026 runs to the date of the MSHA files.
| Year | Citations and orders | Significant and substantial | Proposed penalties | Injury and illness cases |
|---|---|---|---|---|
| 2022 | 2 | 0 | $266 | 0 |
| 2023 | 1 | 0 | $143 | 0 |
| 2024 | 5 | 1 | $973 | 1 |
| 2026 | 10 | 2 | $1,193 | 0 |
Standards cited most at Arp Portable Wash Plant #1
Sections of Title 30 of the Code of Federal Regulations named on the citations, with the part each belongs to.
| Standard | What the part covers | Citations |
|---|---|---|
| 30 CFR 56.12004 | Surface metal and nonmetal mines | 3 |
| 30 CFR 56.14112 | Surface metal and nonmetal mines | 2 |
| 30 CFR 56.14100 | Surface metal and nonmetal mines | 2 |
| 30 CFR 56.11001 | Surface metal and nonmetal mines | 2 |
| 30 CFR 56.9300 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.12025 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.12028 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.14107 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.1000 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.3130 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.4201 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.14206 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.12008 | Surface metal and nonmetal mines | 1 |
Injury and illness cases at Arp Portable Wash Plant #1
Accident reports by degree of injury, as the operator reported them to MSHA.
| Degree | Cases |
|---|---|
| Days away from work or restricted activity | 1 |
What the accident reports at Arp Portable Wash Plant #1 describe
Accident classification, as MSHA codes the circumstances that contributed most directly.
| Classification | Reports |
|---|---|
| Stepping or kneeling on object | 1 |
Other open mines in Grant County, Washington
| Mine | Operator | County | Main commodity | Employees | Citations since 2022 |
|---|---|---|---|---|---|
| Quincy WA Plant | Imerys Filtration Minerals, Inc. | Grant County, WA | Misc. nonmetallic mnls. | 42 | 67 |
| Callahan Pit | Callahan Ag, LLC. | Grant County, WA | Construction sand and gravel | 2 | 51 |
| Portable Crusher #1 | North Central Construction, Inc. | Grant County, WA | Crushed, broken stone | 10 | 21 |
| Portable Power Screen | Tommer Construction Co Inc | Grant County, WA | Construction sand and gravel | 2 | 18 |
| Frenchman Hills Quarry Portable Plant #2707 | Segale Properties LLC | Grant County, WA | Construction sand and gravel | 2 | 18 |
| Portable Crusher #2 | North Central Construction, Inc. | Grant County, WA | Construction sand and gravel | 3 | 12 |
| RPC Gravel Pit1 | RPC Gravel LLC | Grant County, WA | Sand, common | 3 | 12 |
| Quincy WA Mine | Imerys Filtration Minerals, Inc. | Grant County, WA | Diatomaceous earth (diatomite) | 10 | 6 |
| Wash Plant | Aaa Ready-Mix Inc | Grant County, WA | Construction sand and gravel | 2 | 4 |
| Hiawatha Wash Plant | Aaa Ready-Mix Inc | Grant County, WA | Construction sand and gravel | 2 | 4 |
| Screen Plant #2 | Central Washington Asphalt | Grant County, WA | Construction sand and gravel | 2 | 1 |
| TTC-1 | Triple Threat Crushing | Grant County, WA | Construction sand and gravel | 3 | 0 |
| Portable Plant | Baseline Crushing Inc. | Grant County, WA | Construction sand and gravel | 2 | 0 |
| Portable 1 | Quincy Rock Products, L.L.C. | Grant County, WA | Crushed, broken stone | 0 | 0 |
| Wash Plant 5 | Aaa Ready-Mix Inc | Grant County, WA | Not stated | 0 | 0 |
US government work, public domain. Counts come from the MSHA files published on November 6, 2026. An open mine is one MSHA lists as Active, Intermittent, New Mine, Temporarily Idled or NonProducing; 13,673 were open that day. Citations, penalties, inspections and accident reports run from January 1, 2022. A citation is an inspector's allegation and an operator can contest it; the penalty is the amount MSHA first proposed, before any contest or settlement. An operator is the legal entity MSHA assesses, and a parent company is its controller. Mines run by sole proprietors or by individuals are counted in every total and are not named. This page uses MSHA data and is not endorsed or certified by MSHA. Free to reuse with credit to SpecStream under CC BY 4.0. Spot a wrong value? Write to [email protected] with the link to this page.