As EPA Unveils New PM Standard, Debate Shifts To Monitoring Issue

Proposed new standards for particulate matter (PM) EPA is set to unveil Dec. 21 may set off debate over how to measure compliance with the new limits, with EPA likely to call for tightening a daily fine particle standard but declining to endorse more stringent procedures suggested by agency staff for measuring localities' attainment of the limit. According to sources, it appears EPA will formally unveil a proposal Dec. 21 calling for tightening the current daily standard from 65 micrograms...