Buellton officials weigh noise controls as Highway 101, SR‑246 and launch activity drive higher contours

Consultants told Buellton’s planning commission and City Council that the noise element of the general plan should document existing noise generators, project future contours and set land‑use compatibility and mitigation expectations.

Aaron Bannensteel, principal with Atlas Planning Solutions, said the 2025 noise contours are dominated by Highway 101 and State Route 246 and that the city should consider contour‑driven guidance about what land uses and building designs are appropriate adjacent to high‑noise corridors. “If you look at the noise contours … Highway 101 is definitely the biggest noise generator for your community along with State Highway 246,” Bannensteel said during the presentation.

Why it matters: noise contours inform where housing, schools and other sensitive uses are appropriate and what mitigation (setbacks, design orientation, mechanical systems, enhanced building construction) should be required to protect residents’ health and quality of life.

Discussion highlights included requests to: pursue traffic‑calming and speed reductions on SR‑246 to reduce noise; review construction‑hours and decibel (dB) standards in municipal code; explore landscaping and tree planting as partial noise buffers near busy corridors; evaluate design‑oriented solutions (for example, orienting living spaces away from the roadway and using garages/front‑buffer zones to shield interiors); and monitor nonroad noise sources identified by residents such as car‑wash dryers, wastewater‑treatment blowers, loud commercial vehicle operators and frequent Vandenberg launch activity.

Commissioners noted existing municipal code contains construction‑noise standards but asked staff and consultants to review whether those standards should be updated for current development patterns. Consultants suggested the general plan can promote “good design” beyond minimum code compliance to reduce indoor and neighborhood noise exposure without relying solely on structural code changes.

The consultants and staff agreed to review existing decibel standards, construction‑hour rules and potential objective design standards for multifamily projects as part of the noise element update.