Sustainability Advisory Board Agenda and Packet 2023 06 21

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Sustainability Advisory Board Minutes May 17, 2023 Page 4 of 8 square feet or larger and a potential Louisville program could require smaller commercial buildings to participate. The building size for a Louisville program is undecided. Golden is developing a benchmarking program for buildings sized at least 5,000 square feet and other local governments are considering a 25,000 square foot threshold. Louisville would likely partner with other local governments to implement. Discussion Item — Dark Sky Lighting Ordinance Overview A presentation was shown by Amelia Brackett-Hogstad. More information about the ordinance can be found in the May packet slides. The draft ordinance will be presented to Planning Commission in July and City Council in August. Based on community engagement to date, the City has found that there is general community support for a dark sky ordinance and the main motivations appear to be safety and the need for dark skies. The Chamber of Commerce did a poll of its members - 72% were in support, 13% oppose, and 15% need more info. After community engagement, staff made updates to the draft ordinance that attempted to address concerns that were voiced during the public engagement process. Proposed changes to the ordinance include: Compliance Options - Council can choose option 1, options 1 and 2, or options 1 and 3. Choosing options 2 and 3 would create more work for city planners to implement. The options are for the ordinance to apply to the following: • New and replacement lighting only • Additions and alterations — if whole site wide compliance must occur, that would include the parking lot • Tiered amortization - would be unique to Louisville. All sites must comply within 10 years and meet established milestones along the way so that people can gradually begin to comply and incorporate the updates into their annual budgets. Amelia said that ideally the third option would lead to hiring someone to focus on education and the creation of financial incentives. Uplighting is not allowed in any of the options.