GroundRosterMark Downing
License details
| Company | Donald L Hamlin Consulting Engineers Inc |
| License number | 502 |
| License type | Class Expiration Date: Designer |
| License status | Active |
| License expires | December 31, 2016: the expiry date in our copy (as of October 3, 2026) has passed. Check with the issuing agency. |
| Based in | Essex Junction, Chittenden County, Vermont 05452 |
| County on the state list | Chittenden |
"Based in" is the city and county of the address on the business's license record.
What this license covers
- Design: licensed to size and lay out a septic system for a specific site and soil condition.
How to verify this license
We publish the license details exactly as they appear in the public licensing records of the agency that issued the license; we do not vouch for the business itself. Before hiring, look up license #502 directly with the agency that issued it, confirm it is still active, and ask for a current certificate of insurance.
Source: VT DEC - Licensed Wastewater Designers & Site Technicians, last checked 2026-10-03. Look it up at the issuing agency.
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