Soil & Compaction
- Moisture-density (Proctor) testing
- Field density — nuclear gauge
- Subgrade evaluation & stabilization
- Structural fill verification
- North Central Testing & Inspection
Reliable testing Accurate results Trusted support.
Serving the Pacific Northwest from Omak, WA — soil, concrete, asphalt, and aggregate testing for mining, heavy civil, and commercial projects.
- Who We Are
Decades of materials testing across the Northwest
North Central Testing & Inspection provides materials testing, inspection, and quality assurance for construction, industrial, and infrastructure projects throughout the Pacific Northwest. A substantial part of our experience comes from the mining industry — site development, haul roads, foundations, and processing infrastructure in some of the region’s most demanding environments.
- Field and laboratory testing under ASTM procedures and project specifications
- Certified technicians who understand schedule pressure and tolerances
- Reliable documentation that holds up with engineers, owners, and agencies
- What We Do
Testing, Inspection & Laboratory Services
Concrete Testing
- Slump & air content testing
- Cylinder casting & compression
- Temperature monitoring
- Placement & reinforcement inspection
Asphalt / HMA
- Density testing & verification
- Core sampling & thickness checks
- Compaction monitoring
- Plant & paving QC support
Aggregate Testing
- Gradation analysis
- Moisture content testing
- Material quality verification
- Production quality control
Special Inspections
- Reinforced concrete inspection
- Structural steel inspection
- Welding inspection
- Code-compliance verification
Laboratory Services
- Standardized ASTM test procedures
- Calibrated, controlled environment
- Detailed reporting & documentation
- Sample handling & chain of custody
- Why Choose Us
Qualified Professionals Supporting Your Project
Certified & Qualified Technicians
Our team maintains industry-recognized certifications including ACI, MSHA, Nuclear Density Gauge, and HAZMAT (APNGA), demonstrating a commitment to professional standards
Comprehensive Testing Capabilities
We routinely provide testing services for soils, asphalt, aggregate, concrete, mortar, masonry, grout, and other construction materials to support a wide range of project requirements.
Field & Laboratory Expertise
Our technicians perform both field testing and laboratory analysis, providing accurate results and dependable support throughout every stage of construction.
Diverse Industry Experience
We support projects across mining and mine infrastructure, heavy civil and infrastructure, commercial and industrial, and civic, housing, and telecom sectors.
- Stay Updated
Construction Materials Testing & Inspection
Comprehensive materials testing to support safe, compliant, and on-schedule projects — certified technicians, accurate data, and fast reporting in the field and in the lab.
- Client Stories
What Our
Clients Say
We value the trust our clients place in us and strive to provide dependable testing, inspection, and quality assurance services on every project.
Have more any questions?
Contact North Central Testing & Inspection to discuss your project requirements and testing needs.
- Have Questions
Frequently asked questions
What services does North Central Testing & Inspection provide?
We provide soil and compaction testing, concrete testing, asphalt/HMA quality control, aggregate testing, special inspections, and laboratory services.
What industries do you serve?
We support mining and mine infrastructure, heavy civil and infrastructure, commercial and industrial, and civic, housing, and telecom projects.
What certifications does your team hold?
Our certifications include ACI, MSHA, Nuclear Density Gauge, and HAZMAT (APNGA)
Where are you located?
23 S Benton St, Omak, WA 98841.
How can I contact North Central Testing & Inspection?
You can reach us at (509) 826-0645.