Bjork Sub. Test Hole 4
Status not reported Other well
| API number | 12-031-02336 |
|---|---|
| Operator | Foyle, Bert |
| County | Cook, Illinois |
| Depth | 31 ft |
| Surface location | 41.675785, -87.716119 · wells within 1 mile |
| State record | Illinois State Geological Survey ↗ |
| Data as of | 2026-10-17 |
From Illinois State Geological Survey public records. Verify with the state before relying on this information.