Participants: Matt Tuftedal and Victoria Lang.

Sampling Head: ND-1-047 Start Date: 06/06 Start Time: 11:29 PM Start Mag: 32 Start Counter: 14603.99

End Date: 06/20/2019 End Time: End Mag: End Counter:

Comments: This filter head only had two out of three fasteners. May cause issues.

Additional Information: The pesticide filter was added to the roof passive sensor at the same time this was started.

At Glacial Ridge: At 2:30pm the same passive sensor that is on Clifford Hall's roof was installed out at the Glacial Ridge Site. This filter should last the entire season.