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Verified Reviews for Excavation pros in Union, OR

*The Angi rating for Excavation companies in Union, OR is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Excavation needs.

*The HomeAdvisor rating for Excavation companies in Union, OR is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Excavation needs.

Last update on April 08, 2026

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Avatar for Twin Ridge Services Inc.
Twin Ridge Services Inc.
New to Angi

Serving Union, OR and surrounding areas

Approved

Free estimates

Emergency services offered

Credit card accepted

Twin Ridge Services Inc. is a locally owned and operated company specializing in excavation, site preparation, and land management services. Built on a strong work ethic and hands-on industry experience, we take pride in delivering reliable, high-quality work tailored to each project’s needs.\n\nOur services include earthwork, grading, road maintenance, ditch cleaning, and vegetation management such as brushing and mastication. We are committed to efficiency, safety, and attention to detail, ensuring every job is completed to the highest standard.

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Avatar for JBC Group Solutions Inc
JBC Group Solutions Inc
4.0(
4
)

Serving Union, OR and surrounding areas

In business since 2007

Emergency services offered

"I have been using them for 3 years for multiple projects and would not go to somebody else. They also built a cabin in the woods. It was built 10 miles from the road so it was like carrying all the stuff up the path. They also did the garage and remodeling of the house, mostly kitchen and a little bit of plumbing work in the bathroom. I am still using them and I would be using them for the next thing that will be coming up too."
Custom Staircases
Custom Exterior Restoration
Custom Bathrooms
Recommended by75%of homeowners
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WESLEY ROBERT CRADDOCK & TARAN ASHTON HARDWICK
5.0(
1
)

Serving Union, OR and surrounding areas

In business since 2010

Free estimates

Credit card accepted

"Theyâ re a newer company, but reliable. They just started their company, but have experience in the concrete business. Adaptable to clientâ s needs. Communicated effectively when things needed clarifying or plans changed. Work is something I wouldnâ t be proud of. Would highly recommend again."
Response time11 hrs
Recommended by100%of homeowners
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Excavating questions, answered by experts

How deep your septic system needs to be into the ground depends on several factors. In extremely cold environments, the tank needs to rest below the maximum frost line, which can be up to six or eight feet deep. The standard burying depth for most systems is between a few inches and four feet below ground level. Depth can also depend on the slope of the landscaping and other property variables. 

There is no standard depth for burying a septic tank; they are typically buried anywhere from 4 inches to 4 feet underground. The final depth depends on several factors, including the depth of your main sewer line, the height of the bedrock, soil type, local regulations, and the property's landscape. If you plan to grow grass or plants over the tank, a depth of at least 4 to 6 inches is recommended. Deeper tanks can be more difficult to locate, but a septic professional can help find it for you.

Water lines are buried at various depths, depending on the type of line. For example, most sprinkler lines are buried between four and 12 inches underground. On the other hand, water mains usually sit between one and 3 feet below ground. However, they can go even deeper in cold climates to prevent freezing.

Preparation involves site assessment, clearing debris, grading surfaces, and compacting soil to support stable construction.

The rules for trenching and excavation include setting up and following safety protocols, learning how to use tools and machines properly, and ensuring there is a safe exit for all workers. Keep heavy equipment and materials away from the edge of the hole or trench. Call the 811 dig line before starting any excavation or trenching project to ensure you don’t hit any electrical or gas lines.

The Union, OR homeowners’ guide to excavation services

From average costs to expert advice, get all the answers you need to get your job done.

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