PROPOSAL:
Report on the Technology Assessment for Rule 1122 – Solvent Degreasers
SYNPOSIS:
At the September 21, 2001 meeting, the Board approved a resolution
directing AQMD staff to conduct a technology assessment for the 2006 VOC
limit for vapor degreasers, including the appropriateness of maintaining
the limited exemption for cleaning of electronic space components. This
report provides staff’s findings and recommendations and satisfies the
Board directive on the completion of the technology assessment.
COMMITTEE:
Stationary Source, November 18, 2005, Reviewed
RECOMMENDED ACTIONS:
Receive and file.
Barry R. Wallerstein, D.Env.
Executive Officer
Background
Rule 1122 - Solvent Degreasers was adopted on March 2, 1979 primarily to
control volatile organic compound (VOC) emissions from solvent degreasing
operations. The September 2001 amendment established a 25 gram per liter VOC
limit for solvents used in vapor degreasers. This limit takes effect on
January 1, 2006. The Board approved a resolution to conduct a technology
assessment for the 2006 VOC limit for open-top vapor degreasers and to
evaluate the need for the limited exemption found in rule paragraph (k)(2)
for equipment designed to travel over 100 miles above the earth’s surface.
Technology Assessment
The technical evaluation conducted by staff determined that the 25 grams
per liter VOC limit is feasible and is being implemented by many facilities
using open-top vapor degreasers. In addition, it was determined that the
limited exemption should be retained for equipment designed to travel over
100 miles beyond the earth’s surface.
Conclusion and Recommendations
Staff concludes that alternative cleaners that comply with 2006 VOC limit
of 25 grams per liter for vapor degreasers are available for precision
cleaning applications. Furthermore, facilities that manufacture electronic
components for satellite or outer space applications will need to use
high-VOC solvents for the critical cleaning of these specific parts.
Staff recommends that the January 1, 2006 VOC limit for vapor degreasers be
implemented and that the rule exemption found in Rule 1122 section (k)(2) be
retained.
Attachment(s) (DOC 116 KB)
Technology Assessment for 2006 VOC Limit for Vapor
Degreasers under Rule 1122 – Solvent Degreasers
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