We started pumping on EY volume around 4pm local and continued for 6 hours before valving out for the evening. Pressure is currently at 1.6 Torr (same reading at local gauges on turbo station). Will valve back in tomorrow morning and spin up the turbo at ~100 mTorr.

I first closed the header o-ring valve, then the 10" gate valve, and finally the safety valve. This gate valve is the only CETEC turbo valve left in operation (aside from midstations and H2). When I closed it the wheel rotated CCW (open) slightly with spring back. I didn't want to over extend and break something (known to happen with these valves) so I turned it in CW direction a few times until the spring back dissipated. I closed the safety valve as well since there is a leak in foreline behind it.

Leaving site now.