In relatively well-developed areas, such as western Contra Costa County, finding mitigation sites can be problematic. Uplands with potential for restoration are often earmarked for other development projects, making them cost-prohibitive for mitigation work. At Mariner’s Walk, in Martinez, Zentner Planning and Ecology worked with RWQCB staff to identify local mitigation sites for an Olson Company project. When no readily available sites were found, we identified a mitigation site in neighboring Solano County, across the Carquinez Strait. Although initially reluctant to cross County borders, RWQCB staff were persuaded by our ecological analyses demonstrating the similarities between the development and mitigation sites and approved the project.
Boundary Creek is a relatively small subdivision on the banks of Crow Creek in San Leandro. However, strong neighborhood opposition led the RWQCB to impose its strictest wetland and stormwater regulations on project approval. Zentner Planning and Ecology worked with the developer (Mark Pringle Homes) to define a creek conservation area and then designed an innovative stormwater treatment program that included permeable pavements, bioretention strips, and other stormwater treatment features. In recognition of the program’s value, the RWQCB then provided an administrative approval, rather than a more lengthy public hearing process.