The Department of Environmental Protection proposed to amend Ch. 117, Source Surveillance § Emissions Monitoring. Changes would update and standardize requirements for air emission sources that are required to continuously monitor their emissions, including technological improvements in air quality monitoring since 1994, the last time the rule was modified. There will be a public hearing on December 16, 2010, and the deadline for comments is December 27. http://www.maine.gov/sos/cec/rules/notices/2010/112410.html.