The Department of Environmental Protection proposed to repeal Ch. 135, Hexavalent Chromium Particulate Emission Standard. The Department proposed the repeal of the rule, which establishes a limitation on the amount of hexavalent chromium allowed to be emitted from any potential source of hexavalent chromium, as federal rules are more comprehensive. The deadline for comment is August 5, 2011. http://www.maine.gov/sos/cec/rules/notices/2011/070611.html.