89 FR 19308
EPA announced the availability of Volumes 1 and 2 of the Integrated Review Plan for the Primary National Ambient Air Quality Standards for Oxides of Nitrogen.
89 FR 18548
SIP Approval: California (second 10-year particulate matter maintenance plan for Sacramento County).
89 FR 18546
SIP Approval: California (revisions concerning emissions of nitrogen oxides (NOx) from biomass boilers and reasonably available control technology requirements for major sources of NOx in the portion of the Sacramento Metro nonattainment area in the Yolo-Solano Air Quality Management District).
89 FR 17759
EPA approved a CAA state plan submitted by South Carolina to establish performance standards and other operating requirements for existing municipal solid waste landfills.
89 FR 16712
SIP Proposal: California (revisions concerning emissions of volatile organic compounds and nitrogen oxides from refinery flares).