What's New List Serve Post Display

The California Air Resources Board (ARB) would like to alert you
of recent changes to the ARB’s air quality monitoring network. 
Details of the changes are available on the Internet at:

http://www.arb.ca.gov/aaqm/qa/pqao/listserve/changes.pdf

This letter provides details of the following network changes: 

1.Replace “hockey pucks” with original Teledyne API filter 
housings on API 400E’s
2.New quality control (QC) limits
3.Ozone calibration changes
4.Replacement of instruments – CO and SO2
5.Reduction of auto-calibration precision and span QC check
levels
6.NOx Range Change
7.BAM Zero Check
8.Zero Air Accuracy

For additional information regarding the ARB PQAO and the
resources available to monitoring organizations with the ARB
PQAO, please visit the ARB PQAO Homepage at:

http://www.arb.ca.gov/aaqm/qa/pqao/pqao.htm