GroundRosterMark Randal MathisLicensed
| Name | Mark Randal Mathis |
| License number | OS0036909 |
| License type | OSSF Installer I |
| License status | Current — TCEQ OSSF licensing export (exported 2026-08-17) |
| License expires | 2028-02-29 |
| Location | Cass County, Texas |
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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 Texas's official licensing records; we do not vouch for the business itself. Before hiring, look up license #OS0036909 directly with the state, confirm it is still active, and ask for a current certificate of insurance.
Source: Texas Commission on Environmental Quality (TCEQ) - OSSF occupational licensing, last checked 2026-08-17. Verify at the official source.
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