Quality Control

Central Pre-Mix Concrete Co. has certified, trained and knowledgeable professionals with many years of experience in ready-mixed concrete, aggregates, and asphalt quality control. Producing quality products has always been a top priority at all CPM locations.

CPM offers state-of-the art lab testing facilities and field testing equipment.

For QC questions, project needs, and mix design information, please contact the CPM QC team.


Meet the Quality Control Team
 

Steve Wittstock   EmailSteve Wittstock
Director of Quality Assurance - Oldcastle Materials Northwest Division (NWD)
   36 years in building materials quality control experience
   Certifications:

  • NRMCA Concrete Technologist Level 4
  • NRMCA Pervious Concrete Tech
  • ACI Concrete Strength Testing Tech
  • ACI Concrete Flatwork Tech
  • ACI Field Testing Technician Grade 1
  • ACI Laboratory Tech

     

Craig Matteson   EmailCraig Matteson
Quality Control Manager - Central Pre-Mix East Region
   41 years concrete and aggregates quality control experience
   Certifications:

  • NRMCA Concrete Technologist Level 3
  • NRMCA Pervious Concrete Tech
  • ACI Concrete Flatwork Tech
  • ACI Concrete Strength Testing Tech
  • ACI Field Testing Technician Grade 1
  • Concrete Production Facilities Inspection Asst.
  • ICBO Reinforced Concrete Inspector



Clay Allen   EmailClay Allen
Quality Control Aggregates Manager - Central Pre-Mix East Region
   35 years concrete and aggregates quality control experience
   Certifications:

  • WAQTC AsTT Asphalt Testing
  • WAQTC Aggregate Testing
  • Concrete Technologist Level 3
  • ACI Concrete Strength Testing Tech
  • ACI Field Testing Technician Grade 1
  • ACI Concrete Masonry Testing Procedures
  • ACI Concrete Flatwork Tech
  • NRMCA Pervious Concrete Tech
  • Concrete Production Facilities Inspection Asst
  • Radiation Safety

 

Lonnie Ellis   EmailLonnie Ellis
Aggregate Quality Control Technician - Central Pre-Mix East Region
   18 years aggregate quality control
   Certifications:

  • WAQTC Aggregate Testing

 

 

 

 

Nick Martinez   Email
Quality Control Technician - Central Pre-Mix Central Region
   9 years of concrete and aggregate quality control experience
   Certifications:

  • ACI Aggregate Testing Tech Level 1
  • ACI Concrete Field Testing Tech Grade 1
  • ACI Concrete Flatwork Tech
  • ACI Concrete Laboratory Testing Tech Level 1
  • ACI Concrete Strength Testing Tech
  • NRMCA Pervious Concrete Tech
  • NRMCA Concrete Technologist Level 3

 

Justin Schmidt  EmailJustin Schmidt
Quality Control Technician - Central Pre-Mix East Region
   2 years of concrete and aggregate quality control experience
   Certifications

  • ACI Concrete Field Technician Level 1- Certification #01278975
  • ACI Concrete Specimen Strength Testing Technician- Certification #01278975
  • WAQTC AggTT- Certification #23219
  • WAQTC AsTT II- Certification #23219
  • WAQTC Electric Density Gauge- Certification #23219