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CCCTA On-Call Engineering Consulting

Team Members: Diablo: Jennifer Harmon (Project Manager), Garrett Gritz (QA/QC)

Subconsultants: Fehr & Peers, Michael Baker, Swinerton & Ninyo & Moore (various tasks)

Services: Conceptual and Final Design, Multi-agency coordination, Construction Management

Project Description and Location:

The Central Contra Costa Transit Authority (CCCTA) was able to obtain funding to replace 4 diesel buses with electric buses. These 4 buses operate a Free Downtown Shuttle, subsidized by the City of Walnut Creek, serving the shopping district. These buses carry over 288,000 passengers per year. The use of WAVE induction charge technology will reduce emissions by over 154 tons of CO2 per year. This is the first non-wired fully electric Bay Area bus route.

Through an on-call contract with the CCCTA, the Diablo Engineering Group Team has managed the planning and prepared plans, specifications and estimates for the two electric charging stations: one at CCCTA’s bus yard in North Concord and one in the City of Walnut Creek. The first task was to select the Walnut Creek site. After some effort, the team convinced Bay Area Rapid Transit (BART) that the charging station should be constructed at Walnut Creek BART station. Following the installation as shown below, Diablo designed and managed the relocation of the charging pad and equipment into the newly constructed BART parking garage, along with an additional new pad installation. Jennifer Harmon has provided project management and inter-agency coordination for this high-profile transit project. Ms. Harmon provided technical project coordination between the subconsultants, BART, PG&E, the City of Walnut Creek, WAVE, and CCCTA.

These trusted services include facilitating meetings and performing design reviews for this project and others. Under this 5-year on-call, Diablo Engineering Group has worked on several additional task orders including: County Connection Slab and Wall replacement project, Planning for future WAVE induction on CCCTA’s North Concord bus yard, specs and plans for on-going concrete pad replacement and several Bus Stop improvement projects in the Cities of Concord, Pleasant Hill, Moraga, Walnut Creek, and San Ramon.