Participants: Kurt Hibert and Nick Gapp

Purpose: Exchange filter sampling heads and weed whack

Summary:
  * Reduced motor speed to ~42
  * Installed filter head ND-1-041B (used new naming convention because ND-1-041 was used previously)--one filter head remains
  * Brought back refilled fuel can
  * Took pair of pliers back to CH 423 from field site
  * Maximum humidity alert set to 90% on THUM software
  * Weed whacked

Next time:
  * Weed whack