GroundRosterDuluth Excavating & Septic Services LLCLicensed
| Name | Duluth Excavating & Septic Services LLC |
| Company | Ryan J Tuhkanen |
| License number | L4380 |
| License type | SSTS Installer · Designer · Pipelayer |
| License status | Current |
| License expires | 2027-05-22 |
| Based in | Saginaw, Minnesota 55779 |
| Phone | (218) 310-8845 |
"Based in" is the city on the business's state license record. That can be a mailing address; it doesn't tell you where the business works.
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What this license covers
- Design: licensed to size and lay out a septic system for a specific site and soil condition.
- Installation / repair: licensed to build and install septic tanks and drainfields, and to repair or replace failed ones.
- Pipelaying: licensed to install the sewer line running from the building to the septic tank.
How to verify this license
We publish the license details exactly as they appear in Minnesota's official licensing records; we do not vouch for the business itself. Before hiring, look up license #L4380 directly with the state, confirm it is still active, and ask for a current certificate of insurance.
Source: Minnesota Pollution Control Agency (MPCA) - SSTS licensed business list, last checked 2026-08-17. Verify at the official source.
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