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Senate adopts amendment and passes bill aimed at reducing vehicle‑related air pollution
Summary
Senate Bill 321, a measure addressing air pollution from motor vehicles in areas failing federal ambient air quality standards, received a third‑reading amendment at the request of the governor’s office and the attorney general and passed the Senate on May 5 after a 31‑4 vote.
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Senate Bill 321, sponsored by Senator Kim Kirkmeyer, was amended on third reading and passed the Colorado Senate Monday, with supporters saying the changes clarify grant qualification rules and effective dates requested by the governor’s office and the attorney general.
The bill concerns measures to address air pollution related to motor vehicle operations in areas that do not meet the federal national ambient air quality standards. Senator Kirkmeyer asked permission to offer a third‑reading amendment, saying the change was requested by the governor’s office, the Department of Public Health, and the attorney general to "clean up" language on eligible grant recipients, definitions and effective dates (first reference: 00:44:06; transcript lines ~2658–2668).
The Senate adopted an amendment in gross (L008) on third reading; sponsors described the changes as technical clarifications. The amendment was adopted by voice and later recorded as L008 adopted. On final passage the body recorded a vote of 31 ayes, 4 no, 0 absent or excused; the bill was reported as passed on third reading.
What the bill does
- SB321 targets vehicle‑related air pollution in areas out of attainment with federal ambient air quality standards; it includes competitive grants and language about eligible entities for those grants. - The adopted third‑reading amendment clarifies who is eligible under the grant program, tightens definitions and adjusts the effective date.
Votes and next steps
- The Senate adopted the amendment L008 and then passed SB321 by recorded vote (31‑4). The bill was transmitted to further legislative steps after Senate passage.
Speakers and attribution
- Senator Kim Kirkmeyer (sponsor) explained the reason for the third‑reading amendment and requested the body's permission to offer it. Majority Leader Julia Rodriguez moved forward consideration on third reading.

