20190315 LT quarterly calibrations

Performed quarterly calibrations for CO, O3, NO, NOx, NOy
Replaced Teflon filters

20190313 LT NOx instrument

Re-installed NOx instrument and turned it on.

20190311 NOY pump

Sergio - Replaced NOy  Vacuum pump with *****

20190306 Restarted site and did maintenance

• Replaced IR source and drying tube on the CO instrument
• Turned O3, CO, NO, NOy, and calibrator on in preparation for the Ozone measuring season.
• Replaced Vacumbrand pump
• Unplugged BIC plug in the inlet box
• CO= 1640 psi
• NO= 350 psi