Attached are plots of dust counts for locations 1 and 2 in the end Y VEA. These are minutes trends going back 30 days from 08:00 am PDT March 19, 2014 (February 17 - March 19).

H0:PEM-EY_DUST_VEA1_500NM_PCF: Dust counts greater than .5 microns at location 1 normalized to particles per cubic foot.
H0:PEM-EY_DUST_VEA1_300NM_PCF: Dust counts greater than .3 microns at location 1 normalized to particles per cubic foot.

H0:PEM-EY_DUST_VEA2_500NM_PCF: Dust counts greater than .5 microns at location 2 normalized to particles per cubic foot.
H0:PEM-EY_DUST_VEA2_300NM_PCF: Dust counts greater than .3 microns at location 2 normalized to particles per cubic foot.

March 5, 2014
Betsy finds contamination on the cartridge, notes that it must have occurred after installation, comments that dust counts recorded at BSC 10 prior to this date are not useful due to the location of the dust monitor
there. alog

February 28, 2014 - March 3, 2014
No dust counts available, Comtrol found mysteriously unplugged alog

February 24, 2014
cartridge installation alog
Jeff's plots of dust counts during cartridge installation alog

February 21, 2014
ISI wiped down alog

February 20, 2014
TMS bagged alog

SUS bagged alog

December 5, 2013
Dome and north door removed from BSC10 alog