Client: Private Developer
Project Description:
The Calimesa Enclave project involved the development of a new 136-unit residential community — comprising 83 detached single-family homes and 53 attached townhomes — located on a vacant infill site at the northeast corner of County Line Road and Bryant Street in Calimesa. Designed to address the City’s housing needs within its Residential Infill Priority Area Overlay Zone (RIPAOZ), the project aimed to create a sustainable, walkable neighborhood while minimizing environmental impacts to nearby residents, roadways, and open space areas.
Services Provided: Noise Impact Analysis, Air Quality & Greenhouse Gas (GHG) Study
Solution:
Entech prepared a Noise Impact Analysis, applying FHWA Traffic Noise Model (TNM) 2.5 and SoundPLAN 3D to evaluate traffic noise from nearby roadways, HVAC equipment, parking areas, and construction noise at the property boundary and at sensitive receptors such as adjacent homes. We identified areas where operational noise exceeded City thresholds and recommended upgraded glazing, mechanical equipment shielding, and construction-period noise controls to reduce impacts.
For the Air Quality & GHG Study, we used CalEEMod 2022.1.1 to model construction dust, NOx, ROG, PM10, PM2.5, CO, and GHG emissions. We also evaluated project consistency with the South Coast AQMP and RIPAOZ EIR mitigation measures, verifying compliance with SCAQMD significance thresholds.
Benefits:
Our comprehensive studies helped the City confidently certify the project’s CEQA compliance and demonstrate that the development would meet air quality, GHG reduction, and noise goals while maintaining community health and livability.