GroundRosterRiverstone Builders LLC
| Name | Riverstone Builders LLC |
| Company | George Lastinger |
| License number | 2562 |
| License type | DEC Certified Installer |
| License status | Certified — Alaska DEC installer list, updated July 2026 |
| License expires | 2027-03-19 |
| Location | Soldotna, Alaska 99669 |
| Phone | (540) 539-2073 |
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What this license covers
- Installation / repair: licensed to build and install septic tanks and drainfields, and to repair or replace failed ones.
How to verify this license
We publish this listing exactly as it appears in Alaska's official licensing records; we do not vouch for the business itself. Before hiring, look up license #2562 directly with the state, confirm it is still active, and ask for a current certificate of insurance.
Source: Alaska DEC - Current Certified Installer List, last checked 2026-08-17. Verify at the official source.
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