K5 Underground, LLC

08/06/2026

Making progress, hitting our marks & keeping this project moving forward! 👊🏼

08/06/2026

🦺💥Installing sewer on grade for a new Amazon warehouse. These are the technical projects we love tackling & we’re proud to put our crew’s skills to the test!

07/28/2026

Our crew this morning: "We're ready for a smooth start to the week!"
The ground: "That's cute"

Installing 4" HDPE water main in what feels like straight concrete.. Thanks Mother Nature 😅 Good thing it's nothing we can't handle! These are upgrades for an existing school & will be completed before the tardy bell rings ✏️

07/17/2026

Today was a big day for the Koonce family & K5 Underground 🖤🧡

We officially picked up our very first piece of equipment! Every long day, late night & leap of faith has led to moments like this & we’re incredibly grateful. This is just the beginning 💪🏼

05/16/2026

Liam got to skip school & spend the day with Dad so the curriculum for today included:

🛻 Riding in the work truck
📞 Listening to boring business calls
⛽️ Frequent snack stops (Dad’s idea I’m sure)
😎 Telling everyone he ‘works for K5’
🧡 Teaching Dad how to run the drill

Safe to say he’s officially part of management now 😂

05/06/2026

Happy to sponsor a team for Kalama Little League this year! 💚🧡⚾️

Our Kalama Little League Teams banner was put up today! When you head down to Concessions, be sure to check it out and find your player's team!

Thank you Bell Imaging for another great season of high quality photography! 📸

04/28/2026

💥WE ARE HIRING!💥

K5 Underground is looking to add motivated people to our team!

Now hiring for:
🔸 Laborer
🔸 Locator
🔸 Operator

💰Salary-based pay with footage bonuses
🏡 Company-paid lodging
📍Jobs primarily located in Washington
🌲 Licensed in Oregon and Idaho, so some travel may be required down the road
🚙 Clean driving record preferred (we can work with certain cases)
💪🏼 Drilling experience preferred, but not required

We’re looking for dependable people with a strong work ethic and a positive attitude who are ready to work and grow with us! Must be 18+ years old due to job site and equipment requirements.

Send your resume to [email protected] for more details.

04/11/2026

OREGON, WE’RE COMING IN HOT 🔥

K5 Underground is officially licensed in Oregon & ready to take on projects across the river! Let’s get after it! 💥

📞 (360) 975 - 2920
📧 [email protected]

03/23/2026

BIG NEWS ⚡️

K5 Underground is officially licensed in IDAHO! 🏔️🥔
This has been something we’ve been working toward and it feels so good to finally make it official. We’re excited for new opportunities, new relationships and everything ahead!

03/12/2026

Reminiscing on these dry days in Centralia putting in fiber 😅 If the rain keeps up, K5 Underground may be rebranding to K5 Underwater 🌧️🤪