Cal-Tech Testing, Inc. Personnel


Qualifications of Personnel

Cal-Tech Testing's dedication to excellence and providing high quality services is supported by our experienced staff which is sensitive to your needs. Gary W. McCollum and Mike Stalvey, Jr. will serve as key people for our services and have over 50 years combined experience in the Materials Testing and Engineering Industry in the South East.



Ivan E. Marcano, M.S., P.E.
Cal-Tech Testing Inc. is glad to announce that Mr. Ivan E. Marcano has recently joined our Construction Material Testing and Geotechnical Engineering professional team. Mr. Marcano is a Florida Registered Geotechnical Engineer with over 20 years of practical foundation and geotechnical engineering experience in South Florida and the Caribbean. Mr. Marcano's experience includes the planning and direction of geotechnical subsurface investigation, the design of shallow and deep foundations and the implementation of various ground modification techniques as well as extensive expertise in construction quality control of private large-scale high-rise condominium projects, office buildings, hotels, retail developments, convention centers, sport arenas, resorts, malls, residential townhome developments and dike rehabilitation projects for the government.


Gary W. McCollum, Executive Vice President/Owner
Gary has been with Cal-Tech Testing since it's inception in 1980. He manages our facility in Jacksonville, Florida. He has extensive field and laboratory experience in the areas of soil, concrete, asphalt testing and inspection. He has held numerous construction material testing certifications from FDOT, ACI, CMEC and other agencies. He has served as Resident Project Representative on Federal Aviation Administration Projects, Project Manager on our District Wide FDOT Materials Testing and Inspection Contracts, and Project Manager on Design Build Projects.


Mike Stalvey, Jr., Vice President
Mike has extensive experience in Soil, Aggregate, Concrete Field Testing and Drill Shaft Inspection. Mike has performed as a Quality Assurance/Verification and Quality Control Manager on numerous FDOT projects. His experience includes Concrete and Masonry work in performing his duties as a Drill Shaft Inspector. He is very familiar and knowledgeable with specifications and plan reading relating to most projects including vertical, interstate/highway and bridge construction. Mike manages our Lake City office and oversees the Lab, Field, and GeoTechnical Operations.