The South Coast Air Quality Management District (AQMD) will hold a public workshop on proposed rule PR 433, Natural Gas Quality. The objective of PR 433 is to monitor and determine the effects of liquefied natural gas additions to the natural gas distribution system on the quality of natural gas being supplied to end users located within the AQMD and to prevent increases of air pollutant emissions caused by natural gas quality changes. The hearing will be March 26, 2009. http://www.aqmd.gov/pub_edu/notice_433_Mar_26_09.html.