Took many particle samples inside the chamber and inside the cleanroom while installing the north and south doors on HAM6. There was one spike of over 2000 counts of 0.5um particles while putting in the bolts on the bottom of the north door. There were also a couple of elevated counts when covers were removed. All other readings (inside and outside of the chamber) were below 100 0.5um particles, with most below 50 0.5um particles.

   A 4" witness optic was placed on a mass stack just to the -X, -Y side of the OMC. 

   The cleanrooms from the north and east side have been powered down and returned to their parking spot. The Main cleanroom over HAM5/6 has been shutdown; the power cable has been disconnected. The temporary power cords for the cleanrooms have been removed from under the chamber. 

   The small garb room and cleanroom on the south side are still running. I have some work to do on Monday that requires a cleanroom. These will be shutdown and removed when the leak checks are finished.