Lewis County, WA Excavation & Septic Contractor | East County

Q: Do you cover all of Lewis County including Chehalis and Centralia?

Our regular route is East Lewis County along Highway 12 from roughly Mossyrock to Packwood and nearby areas. If you are near I-5, call and ask—we may refer you to someone closer for smaller jobs.

Q: What towns are in your east-county focus?

Morton, Mossyrock, Mayfield Lake area, Glenoma, Randle, Packwood, Silver Creek, and similar addresses along the corridor.

Q: Are you licensed for Lewis County septic work?

We perform excavation and installation to code and coordinate with county permitting. Ask for credentials when you call if you need them for a lender or builder.

Q: Why does east Lewis County need different excavation experience than the I-5 side?

Slope, forest access, snow at elevation, septic on rural lots, and long gravel drives are everyday issues on 12; valley development patterns near Chehalis differ. We specialize in the mountain-corridor problems.

Q: Where is your service map?

The contact page includes an interactive map polygon. When in doubt, call (360) 520-5271 with your address.

Straight talk: Searching “Lewis County” can mean anything from Toledo to White Pass. This page is for people whose projects look like Morton, Mossyrock, Glenoma, Randle, or Packwood—forest, reservoirs, and long gravel drives—not a suburban lot off I-5.

Lewis County runs from the Willapa Hills to the Cascade crest. The county seat is Chehalis; much of the population and retail gravity sits west. East Lewis County is defined by timber, small towns, Riffe and Mayfield reservoirs, and US-12 climbing toward White Pass. That geography drives our workload: septic systems on rural lots, driveway rock that survives rain and snow, utility trenches on long frontages, and clearing for build sites and defensible space. Bloomstrom Construction is owner-operated for that mix of jobs.

East Lewis County & Highway 12 work

Representative excavation and site work from the county’s mountain-corridor side.

Excavation work in Lewis County Washington — **Corridor excavation** — pads and rough grading where clay and slope vary block by block.

Septic installation excavation Lewis County — **On-site sewage** — rural Lewis County still depends on septic on much of the east side.

Utility trench on slope in Lewis County — **Mountain-foothill trenches** — depth and bedding where the ground is not flat farmland.

Land clearing Lewis County — **Rural clearing** — opening sites before septic design and foundation layout finalize.

Services across our east-county route

•Septic & sewer excavation and install
•Excavation, grading, pads, drainage
•Driveways & private roads
•Land clearing

Site restoration after trenching in Lewis County

We leave sites workable when trenching is done—grading and compaction matter for county inspections and everyday use.

Town pages (local detail)

Each page below is written for that community’s geography and common projects—not duplicate text with a new headline.

Morton — US-12 / SR-7 / SR-508 hub, Jubilee town
Mossyrock — Riffe Lake, dam history, “Heart of Lewis County”
Mayfield Lake — Mayfield Dam reservoir, Beach Road
Glenoma — US-12 between Morton and Randle
Randle — Big Bottom Valley, Cowlitz River, SR-131 forest gateway
Packwood — White Pass side, cabins and rentals

Permits and honesty

We work inside Lewis County permitting expectations for grading and on-site sewage. If your parcel is outside the area we can serve this month, we will say so rather than booking and rescheduling endlessly.

See the polygon on our contact page map or call (360) 520-5271 with your road name.

Lewis County FAQs

Do you cover all of Lewis County including Chehalis and Centralia?

What towns are in your east-county focus?

Are you licensed for Lewis County septic work?

Why does east Lewis County need different excavation experience than the I-5 side?

Where is your service map?

East Lewis County free quote

Septic, grading, clearing, driveways, and trenching along Highway 12.

Call (360) 520-5271

All services Contact

Lewis County excavation & septic