Sustainability advisory committee updates Clayton officials on emissions, solar and tree recovery

Deb, a member of the Sustainability Advisory Committee, told the Clayton Board of Aldermen on July 22 that the committee has focused its 2023'24 work on reducing greenhouse gas emissions, short-term "wins" and supporting Clayton Tomorrow 2040 and the livable communities plan. She said commercial and residential buildings together account for roughly half of the city's emissions and emphasized benchmarking and building programs already enacted by the city.

The committee's presentation summarized near-term priorities and programs the city has advanced, including a benchmarking ordinance for city-owned buildings passed in 2024 and a phased requirement that will apply to all buildings over 100,000 square feet later in the year. "In 2024, we passed an ordinance providing for benchmarking for Clayton-owned buildings, over 10,000 square feet, and then in January, all buildings over 100,000 square feet," Deb said during the presentation.

Why it matters: the committee framed buildings and transportation as the largest local emission sources and highlighted achievable measures municipal leaders can promote to reduce local air pollution and carbon output.

Committee recommendations and activities - Buildings: The committee described benchmarking and communications work (website and informational materials prepared by intern staff) to support rollout of the benchmarking requirement for large buildings. - Solar: The city earned SolSmart bronze in 2023 and silver in 2024 after a SolSmart technical assistance review; committee members said achieving gold/platinum will depend in part on county permitting turnaround times and county adoption of the SolarAPP+ expedited review workflow. - Transportation: A fleet electrification assessment was completed with Ameren; transportation accounts for about 44% of Clayton's emissions, the committee said. The group noted federal tax-credit changes that may affect vehicle electrification incentives beginning in September. - Anti-idling outreach: The committee urged public education and posted signs at municipal parks; Deb cited older anti-idling language in the city code dating to the 1970s and said police are not expected to actively enforce the ordinance but that outreach can reduce harmful exposures among children at pick-up zones. - Trees and green space: Committee members outlined tree loss from the recent tornado, noted Clayton's 33-year status as an Arbor Day Foundation Tree City and ongoing tree-replanting priorities, including tree diversity and urban cooling concerns. - Waste and recycling: The committee reported a 22% diversion (recycling) rate in 2024 and noted specialty recycling events and a partnership-backed program to collect 5.7 tons of specialty items in 2025. They also highlighted a "pass-back sports" program to collect and redistribute youth athletic equipment.

Committee operations and partnerships The presentation noted regular collaboration with city staff (Matt and David were singled out), two interns from the city MYAC program and a Washington University sustainability intern. Partners listed in the presentation include Crosswalk (Climate Mayors data), Climate Mayors Network, Republic Waste, WashU and the Audubon Society.

What the board asked or directed Board members asked clarifying questions about benchmarking rollout, SolarAPP+ and county permitting, and whether school-board outreach on anti-idling presentation materials was planned; Deb said the committee would pursue school outreach. No formal action was taken by the Board; the item was an informational briefing.

Ending Deb closed by noting the committee will bring forward additional proposals in the future after further internal review and committee-level approvals.