Yellow means caution. These markings indicate underground gas lines, petroleum pipelines, steam lines, and other flammable materials.
These are commonly found:
- Along main roads and easements
- In older neighborhoods with gas appliances
- Near industrial or commercial sites
Why it matters: Damaging a gas line can lead to:
- Explosions
- Evacuations
- Major regulatory fines
- Worker and public safety threats
At Trenchless Drilling LLC, we always coordinate closely with Sunshine 811 before drilling near any yellow-marked zone — and we recommend private locates if your project includes propane or private gas feeds.