From: Brian Thomas Printed Circuit Alliance Sigma Circuits, Inc. 408-727-9168 x 106 408-727-8859 FAX Subject: Air Emission from Printed Circuit Manufacturing Local area manufactures in the San Jose, Ca area are working on a cooperative effort with the Bay Area Air Quality Management District (BAAQMD) developing a permitting handbook and chapter for the Printed Circuit Industry. We would anticipate that it will eventually be adopted for the entire state of California. We are collecting information regarding emissions from manufacturing processess. Of particular interest are VOC emissions, either calculations, estimates or stack measurments. We also need information on other emissions including acids, formaldehyde, and ammonia. The most difficult area to resolve at this point are resist strippers. Current BAAQMD methodology assumes that all of the organics will be emitted including the Monoethanolamine be it at the process, waste treatment or to the POTW. We plan to include estimated emission rates in the permitting handbook. If you have any information that may be of assistance in this effort please e-mail me or give me a call. I have already posted this on [log in to unmask] but wanted to see if anyone here had some helpful information. Regards, Brian Thomas