Industrial Noise: Chino vs Rialto

Industrial noise in Chino is governed primarily by Chino Municipal Code Chapter 9.40 (NOISE), §9.40.040 Exterior Noise Standards, with measurement methodology fixed in §9.40.020 (A-weighted, slow response, reference 20 micropascals). Per the city's General Plan Noise Element and CMC, the baseline exterior noise standard applied at the receiving property line is 65 dBA. Industrial sources (M-1 Light Industrial and M-2 General Industrial zones, including The Preserve specific-plan industrial areas, Chino Industrial Park along Edison Ave / Pine Ave, and the Auto Center) must not cause noise at adjoining residential property lines exceeding the residential standard (65 dBA daytime 7 a.m.–10 p.m. / 55 dBA nighttime 10 p.m.–7 a.m.). Mechanical and electrical equipment at industrial sites (cooling towers, compressors, dust collectors) is independently regulated under CMC §§9.40.030–9.40.060. Title 20 Zoning performance standards layer in vibration, glare, and noise limits enforced at the time of site-plan review.

Rialto Municipal Code Ch. 9.50 (Noise Control) sets exterior noise standards measured at the property line of the receiving land use. Industrial sources adjacent to residential receptors are limited by the residential receiving-zone standard (typically 65 dBA daytime / 55 dBA nighttime). SCAQMD Rule 2305 (Warehouse ISR) layers regional NOx/PM mitigation obligations on warehouses ≥100,000 sq ft.