TTL Testing & Drilling Services

Construction Quality Control Testing & Inspection

Site Soil Testing

  • Monitoring structural fill
  • Relative density
  • Soil/aggregate compaction
  • Soil bearing for shallow foundations

Concrete Testing

  • Bridge decks, piers, and abutments
  • Buildings (foundations, floors, and walls)
  • Roadways, curbs, and sidewalks

Asphalt Testing

  • Extraction, gradation, hot bin analysis
  • Marshall mix design and density
  • Performance grade binder testing
  • Specific gravity of compacted mix
  • Superpave mix design

Deep Foundation Inspections

  • Auger cast pile
  • Caisson inspections
  • Pile driving

Our Expertise 

TTL’s Construction Quality Control Testing and Inspection engineers and managers routinely develop quality control programs for transportation and building projects that assure quality.

AASHTO Certified

TTL laboratories are AASHTO Certified with state-of-the-art equipment for testing soils, concrete, masonry, asphalt, and aggregates.

Why It’s Important

Construction quality assurance oversight is crucial to ensure a geotechnical feature is successfully completed per the design specifications. TTL provides these services, as well as embankment material selection and compaction, drainage system installation, anchor load tests, and observation of retention system installation.

We are performing 218 borings using an ATV-mounted drill rig, allowing flexibility of drill rig access with minimal dozer work or clearing activities.
We use a handheld GPS unit to obtain approximate coordinates and ground surface elevations at the boring locations. Borings performed deeper than 10 ft are sealed using cement-bentonite grout. The remaining borings are backfilled with a mixture of auger cuttings and bentonite chips. We estimate that 2,636 soil samples will be obtained, including 2,516 split-spoon samples and 120 Shelby Tube Samples.
Other tasks include pavement coring, drilling and sampling soils and bedrock via test borings, and laboratory testing. Location is Sylvania Township Lucas County, Ohio.
The original runways were 2.6 miles and 1.8 miles long and were completely removed. Full-depth replacements included associated ramps, taxiways, and both concrete and asphalt concrete pavement sections.
All activities were performed while the other runway remained active. Our services included soil compaction testing, airfield lighting electrical inspection, soil classification testing, soil-cement mix designs, concrete mix designs, and asphalt mix designs.
All testing and reporting procedures followed the United States Air Force specifications for Airfield Pavements. We also established a government and USACE-validated on-site laboratory testing facility. Concrete mix designs met stringent airfield pavement specifications. Concrete placements consisting of 2,000 cy – 4,000 cy per shift were routinely performed to complete the 250,000 cy of total concrete.
TTL Testing & Drilling performed construction materials testing and inspection services for the new Glass City Metropark on Front Street across from International Park in Toledo, Ohio. Phase one of the project was for 30 of the 67 total acres planned for the park. It will include a 3,500 sq ft pavilion, an event lawn, trails, a sledding hill, and boardwalk access to the water. Phase 2 included an ice-skating ribbon, adventure play areas, and a campground.
Services consisted primarily of soil/stone compaction, concrete testing (including steel reinforcement inspection), asphalt testing, and structural steel inspection.

Currently Hiring for:


DRILLER Tasks can include: Regulate air pressure, rotary speed, and downward pressure according to the drilled rock or concrete. Verify depths and alignments of boring positions. Monitor drilling operations, checking gauges and listening to equipment to assess...

Field Technician

FIELD TECHNICIAN Conducts quality control testing of various construction materials on construction sites. Writes and submits electronic reports via a computer tablet program. This position generally begins in the concrete testing field, then advances to other...

Driller Helper

DRILLER HELPER Provides functional support to the Drill Rig Operator so that projects meet the client’s specifications for quality and timeliness. May qualify for training and development towards the Drill Rig Operator position. Travel (including overnight) is...