GWJ Contracting

08/30/2026

We recently completed an engineered septic field across the road, and the neighbors liked our work enough to bring GWJ Excavation & Site Prep in for their engineered septic installation as well.

We’re starting their new mound system this week. It’s a busy time of year, but we’re grateful for the trust and excited to show the progress—from site prep through final restoration. Stay tuned for before-and-after photos.

SepticField MichiganSeptic Excavation SitePreparation NorthernMichiganContractor

08/30/2026

A site has to be accessible before it can become anything else.

GWJ Excavation & Site Prep is mobilizing the full crew—with our large excavator, skid steer, and wood chipper—to selectively clear this lot for safe, usable access. We’ll install a gravel driveway approach, open and prepare the proposed septic-field area, and create a clean, workable site the homeowner can use to evaluate their next steps—whether that means building now or later.

Need land cleared, access established, or a site-prep package built around your property? Message GWJ Excavation & Site Prep to schedule a site visit and get your project moving.

NorthernMichigan

08/21/2026

🚧 ENGINEERED SEPTIC SYSTEM GOING IN 🚧

Not every property can be served by a basic, conventional septic field — and that’s where engineered systems come into play.

Today, GWJ Excavation & Site Prep is on site installing an AeroFin™ engineered wastewater treatment system — a highly efficient, compact system designed to treat and disperse wastewater within the same footprint.

AeroFin utilizes a specialized vertically oriented treatment system surrounded by engineered sand to create a passive biological treatment environment — providing advanced wastewater treatment without relying on electricity or replacement treatment media.

💧 Advanced wastewater treatment
📐 Engineered for challenging sites
🏡 Compact system footprint
🚜 Precise excavation & installation
📋 Installed according to engineered plans and permitting requirements

Septic work is a lot more than digging a hole and setting a tank. Proper elevation, grade, distribution, materials, system layout, and final installation all have to work together for the system to perform as designed.

GWJ Excavation & Site Prep specializes in engineered septic system installation, including projects where difficult soils, limited space, high groundwater, or site conditions require something beyond a standard drainfield.

Need a new septic system? Have a difficult property that requires an engineered solution?

📞 CALL GWJ EXCAVATION & SITE PREP TODAY
From conventional systems to advanced engineered installations — we have the equipment, licensing, and experience to get it in the ground correctly.

GWJ Excavation & Site Prep
Engineered Septic Systems • Excavation • Site Development

Excavation SitePrep NorthernMichigan MichiganContractor WastewaterTreatment OnsiteWastewater

08/12/2026

🚨🌳 WORK IS UNDERWAY IN ONEKAMA! 🌳🚨

The GWJ crew is on-site, the limbs are hitting the ground, and the chipper is turning! 💪🔥

With our 55-foot man lift, skid steer, dump trailer, and wood chipper all working together, we’re carefully and efficiently bringing down this massive tree extending over Onekama Building Hardware’s fence and lumber yard.

Jobs like this require the right equipment, a solid plan, and a capable crew—and we came prepared! 🚧🪵

We’re extremely grateful to Onekama Building Hardware for trusting a local company to handle such a major project. Stay tuned for the finished result!

📞 NEED TREE REMOVAL, LAND CLEARING, EXCAVATION, OR SITE PREP?

CALL GWJ EXCAVATION & SITE PREP TODAY!

LocalBusinessesSupportingLocal

08/12/2026

🌙🚜 LATE-NIGHT EQUIPMENT DROP! 🚜🌙

We’re getting staged tonight for an early start tomorrow at Onekama Building Supply! 🌲🪚

Our crew will be taking on an absolute monster of a tree that has grown into their lumber yard. It’s a big job, and we’re ready to get after it! 💪🌳🔥

We’re incredibly grateful that a respected local business like Onekama Building Supply has trusted GWJ to handle a project of this size. That trust means a lot to us, and we don’t take it lightly. 🤝

Local businesses trusting local businesses—that’s what keeps our community moving forward.

Stay tuned… you’re going to want to see this one come down! 👀🔥

GWJ Excavation & Site Prep

08/12/2026

07/25/2026

Moving dirt and making progress. 🚜💪

The A20 rock truck and CAT 320 excavator are on site today, loading fill and hauling it nonstop to backfill around this modular home. Every load gets us closer to final grade as we dial in elevations and build a solid foundation for everything that comes next.

Big iron. Long days. Steady production. That’s how projects stay on schedule. 👊🏗️

07/22/2026

🚧 CONCRETE POUR DAY 🚧

The crew is on site screeding, floating, and finishing this new patio and sidewalk combination while Elmer’s Concrete keeps the mud coming! 💪🏼🦺

Once this side is wrapped up, we’re heading around the house to pour the new garage driveway. Big day, solid progress, and a whole lot of concrete going down! 🔥🏠

07/20/2026

Form Day!