[Bubba, Chandra]

Bubba and I inspected some recently observed damage to the concrete beam tube enclosure near mid-X along X1 (not sure how long it has been there). A ~12x12" section of concrete shows signs of damage near top of enclosure. There are no burn marks to indicate a lighting strike. We inspected from inside and found some damage at same location from inside. No noticeable damage or debris on vacuum beamtube. Because this spot is almost exactly in between access doors, we took the opportunity to inspect ~ 250 ft worth of enclosure and tube while inside and found many sites with discolored growths which could be spalling. Pictures attached.

The section damaged is #25 from MX, or about 250 ft from MX along X1.