Client: Caltrans District 10 / Stanislaus County
Project Description:
This federally funded infrastructure project created a vital new crossing over the Tuolumne River, connecting SR-132 and SR-99. Designed to enhance goods movement, emergency access, and flood resilience, it required a NEPA/CEQA-compliant environmental review that addressed regional conformity and air quality impacts.
Services Provided: Air Quality Impact Assessment
Solution:
Entech performed a complete emissions assessment using CalEEMod and regional monitoring data, analyzing criteria pollutants, MSATs, and PM hot-spot potential. Our team ensured the project met EPA conformity regulations, regional RTP/SCS goals, and localized thresholds.
Benefits:
Our defensible findings cleared the way for federal approval and funding, demonstrating the project would improve mobility while remaining protective of public health and meeting Clean Air Act conformity requirements.