Jefferson County, WA
Jefferson Transit Authority (JTA) had outgrown their existing administration and maintenance facility creating management and operational problems for a transit system of their size. JTA acquired a 10 acre site to build a new facility.
Originally a $10 million facility was planned, but funding challenges reduces the available budget to $4 million. SCJ Alliance led the entitlement efforts to secure Jefferson County approval of the facility. This included preparing a Conditional Use Permit application, SEPA checklist, and a variance application for exceeding the maximum allowed impervious coverage of the underlying zoning. SCJ also provided civil engineering design services including design of the stormwater, grading, and utility systems.
Because of the reduced funding, SCJ was charged with finding cost-saving measures in the site design. One solution was the use of low impact design strategies for stormwater management. A combination of sheet flow dispersion, rain gardens, and infiltration systems were used. This low impact design approach eliminated the need for a traditional catch basin and pipe system, which reduced site costs.
“One of the exciting aspects of this project was the ability to truly integrate low impact development including the use of sheet flow dispersion. Dispersion is a low impact strategy that is not often incorporated, because it requires leaving large areas of a site undisturbed. Because of the scaled-back project, over half the site was to remain undisturbed, which allowed our design team to explore dispersion as well as other low impact design techniques.”
Amy Head, PE LEED AP BD+C