#1 Hamilton Excavation
Serves this area from OR
Hazardous Waste Disposal Companies in Grant County, OR
The top-ranked hazardous waste companies serving Grant County, OR are Hamilton Excavation, Hamilton Excavation and Sheldon Petroleum Service. We list 8 hazardous waste companies serving Grant County, OR. 8 of the providers shown match an active record from U.S. EPA, checked on the date shown. Rankings follow our published methodology; sponsored placements never change rank.
Hazardous Waste Disposal Companies serving Grant County, OR. 8 providers, 8 of the top 8 verified against federal or state records. Registry records checked on 2026-11-04.
Top 8 ranked hazardous waste companies for Grant County
#2 Hamilton Excavation
Serves this area from OR#3 Sheldon Petroleum Service
Serves this area from Pendleton, OR (81 mi)#4 Little Valley Enterprises Inc
Serves this area from OR#5 US Army Umatilla Chemical Depot
Serves this area from OR#6 Smaf Environmental LLC
Serves this area from Prineville, OR (93 mi)Call (541) 447-5643 · Website#7 Team Legacy Inc
Serves this area from OR#8 Konen Rock Products Inc
Serves this area from OR
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Frequently asked questions
How many hazardous waste companies serve Grant County?
We list 8 hazardous waste companies serving Grant County, OR: 0 based there and 8 serving it from nearby. 8 of the top 8 match an active federal or state record, checked on 2026-11-04.
Which hazardous waste companies serve Grant County?
The top-ranked hazardous waste companies serving Grant County, OR are Hamilton Excavation, Hamilton Excavation, Sheldon Petroleum Service, Little Valley Enterprises Inc and US Army Umatilla Chemical Depot. The full ranked list, with the official records each provider matched, is on this page.
Which hazardous waste companies serving Grant County are verified against official records?
8 of the top 8 match an active official record: Hamilton Excavation (U.S. EPA), Hamilton Excavation (U.S. EPA), Sheldon Petroleum Service (U.S. EPA), Little Valley Enterprises Inc (U.S. EPA) and US Army Umatilla Chemical Depot (U.S. EPA), and 3 more on this page. Each badge links to the official record it matched.
How are these companies ranked?
By our published methodology: verified registrations, documented capabilities, years registered and responsiveness. Sponsored placements are shown separately and never affect rank.
What does "Verified" mean on this page?
"Verified" means we matched the provider to an active official record on the date shown; each badge links to that record. The absence of a badge only means we have not verified that item.
What is the difference between a transporter and a TSDF?
A transporter moves hazardous waste under an EPA ID; a TSDF is a permitted facility that treats, stores or disposes of it. Many providers do both.
"Verified" means we matched the provider to an active official record on the date shown. The absence of a badge only means we have not verified that item. How we rank and verify. Page updated .
Communities served
John Day, Prairie City, Canyon City, Mount Vernon, Long Creek, Seneca, Dayville, Monument, Granite