During ERL running, formal Lab tours into CESR controlled areas will be allowed only if there has been a radiation survey demonstrating no hazard, and then only on the CHESS/West Flare/CLEO North route shown below. If the ERL is ON, tours shall not proceed into

1. the east-west corridor adjacent to ERL
2. the west tunnel beyond L5 (see floorplan)
3. the east tunnel beyond the first RF cavity (see floorplan)
4. the South side of CLEO
5. the L0 second level stairs/catwalk/etc.