Wetland Science    Technology    Economics    Regulatory Compliance Problems There. Solved Here.

Oro Loma Wetland Mitigation Project, San Leandro, California

Plan Objectives:

• Provide waterfowl and shorebird habitat
• Conserve endemic salt marsh flora and fauna
• Provide endangered species habitat for the salt marsh harvest mouse (Reithrodontomysraviventris r.) and California clapper rail (Rallus longirostris obsoletus)
• Control mosquito populations
• Integrate educational and recreational interests
• Limit the cost of effective, ongoing marsh management
• Encourage interagency management of biotic resources

The mitigation project provided 14.41 acres of created and preserved wetlands habitat. The preliminary design was meant to ascertain whether the prospective wetland mitigation site could achieve the in-kind wetland mitigation replacement habitat with respect to habitat type and hydro-period.

7Q10 prepared a preliminary wetland mitigation design of the selected area. The preliminary design included evaluation of the surface and subsurface soils and soil chemistry, including the hydro-period and water balance necessary to induce wetland hydrologic conditions to achieve the desired success criteria specified by the regulatory agencies.

Once done, a final design was prepared and the site was constructed. 7Q10 provided wetland construction management and SWPPP enforcement. After construction, 7Q10 supervised the hydroseeding of the site and wetland shrub planting. Site monitoring will continue for several years.