For the City of American Canyon
American Canyon, California

This project provides over 1 ½ miles of Class I multiuse path to give the residents of American Canyon access to the lower Napa River. The study included planning a trail alignment adjacent to tidal wetlands and sensitive species habitat, environmental studies, including a NESMI, project permitting, identification of protocols/mitigations to reduce trail construction and use impacts on wetlands and sensitive species habitat, as well as trail design and cost estimates. Questa also completed plans, specifications, & cost estimates, and coordinated with Caltrans Local Assistance Program for E-76 approval and environmental clearance. Questa provided construction assistance using the Caltrans Construction Manual for quality and cost control documentation. The work also included coordination and obtaining ROW and easements from adjacent property owners, Napa Vallejo Waste Management, California Dept. of Fish and Game, and State Lands Commission. Geotechnical services included observation and testing during construction, including compaction testing of aggregate base and quarry fine trail surfacing, as well as observation of rock riprap slope stabilization placement.