Skip to main content

Create Competitive Advantage with OTE Sampling


Platform Environmental impresses engineers with continuous sample retrieved using OTE sampling.

Platform Environmental impresses engineers with continuous sample retrieved using OTE sampling.

When it came time to gain efficiency in geotechnical drilling, John Clark, project manager at Sage Enviro Tech, sought out Geoprobe® sales representative Vic Rotonda for advice. Rotonda not only described out-the-end (OTE) sampling, but also provided training. Since then they’ve been wowing clients.

“Under certain soil conditions it can be as much as twice as fast as drive and wash,” Clark said. “Twice as much data. Twice as many borings. Twice as much vertical feet in a day.”

For one client seeking to sample a gravel bank on a large track of land, they completed twice as much work as previous contractors, resulting in the client hiring them to analyze the entire gravel bank.

“Using OTE allowed us to complete nearly a year’s worth of work for the client in a few days,” Clark said. “It opened up a fantastic business advantage over others not using the method.”

Michael Jordan, owner of Platform Environmental, completes rock coring with his 7822DT to collect Shelby tube and environmental samples through 3.75-inch OTE sampling system.

“The versatility of Geoprobe® tooling to complete OTE versus geotech drive and wash means I can complete the job without water,” Jordan said.

He recently asked an engineer, who he knew to be particular, for approval to utilize OTE rather than drive and wash.

“He was shocked by how fast we got downhole and how we retrieved a continuous sample from the deeper portion, getting readings in between where we would typically be doing split spoon samples,” Jordan said.

Contact Us

1835 Wall Street
Salina, Kansas 67401
Phone: (785) 825-1842

7822DT rotary drilling rigs capability with direct push finesse

7822DT Drill Rig

From crowded street corners to far removed places, tackle various environmental, geotechnical and exploration applications with a single machine combining rotary drilling and direct push, saving time and money required to mobilize multiple drill rigs.

Related Articles


As a project engineer with a Ph.D., Aaron Crowley desired to own his own company. So in May 2022 he partnered with Julie Oliphant, owner of Athena Engineering and Environmental, to launch a sister company ATHENA DRILLING to complete a range of geotechnica

ID: 13413 | Date:

For some air rotary drilling is a rarity, but for EICHELBERGERS INC in Pennsylvania it’s a weekly occurrence using their 7822DTs. They’ve completed air rotary to 220 feet; they’ve drilled using 8-inch and 10-inch casing. On one project they set 10-inch ca

ID: 13412 | Date:

Starting his drilling industry career as a consultant, David Draybuck discovered he didn’t love writing reports. So in 2011, he and his partner gathered funds from closed 401(k)s and an SBA loan to buy a piece of used equipment and launch ENVIROTECH DRILL

ID: 13409 | Date:

Established in 2017 to provide drilling services to geotechnical engineers — focusing on mud rotary technology, PG ENVIRONMENTAL SERVICES struggled to break into the environmental market.

ID: 13407 | Date:

Passionate about delivering exceptional geotechnical, environmental, and instrumentation exploration services, the TERRACON CONSULTANTS INC office in Savannah, Georgia, went from being without in-house drilling resources in 2021 to running three Geoprobe®

ID: 13403 | Date: