GroundRosterSean M. O'BrienLicensed
| Name | Sean M. O'Brien |
| License number | 1768 |
| License type | Soil Evaluator |
| License status | Approved — MassDEP Approved Soil Evaluators list |
| License expires | 2028-06-30 |
| Location | Marston Mills, Massachusetts |
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What this license covers
- Site testing: licensed to run percolation tests and evaluate soils to determine what kind of system a site can support.
How to verify this license
We publish this listing exactly as it appears in Massachusetts's official licensing records; we do not vouch for the business itself. Before hiring, look up license #1768 directly with the state, confirm it is still active, and ask for a current certificate of insurance.
Source: MassDEP - Approved Soil Evaluators, last checked 2026-08-17. Verify at the official source.
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