~1405 hrs. local 

Sampled ~ 1.5 quarts of LN2 at the spigot prior to the LLCV to examine appearance -> I did find a few suspended solids but cannot conclude that they originated from the LN2 or if they were liberated from the fitting that had been left open to the air uncapped

Opened LLCV bypass valve 1 turn ccw then partially opened exhaust check valve bypass valve (to reduce back pressure) -> liquid evident at exhaust after 30 seconds -> Let fill for 90 seconds 

I placed a pan at the exhaust to collect liquid -> I did not see anything suspended in the colorless liquid -> I also noted that the local dewar mechanical gauge was indicating 110" which would translate to > 30% if the CDS transducer and mechanical gauge were calibrated to each other -> I cycled the valves to zero the mechanical gauge and, in doing so, changed the transducer output (was indicating 24.2% before cycling valve and 25.4% afterwards) 

I am surprised that, prior to the "plugging" earlier this week, the LLCV was, on average, open 19% to maintain a pump level of 92% but since has been manually kept at 15% open and yet the pump overfills after only a minute or so via the LLCV bypass circuit.