Marsh Trail Improvements Project (Notification of Lake or Streambed Alteration, No. EPIMS-SON-58331-R3)

The California Department of Fish and Wildlife has approved the Marsh Trail Improvements Project under Lake and Streambed Alteration Agreement EPIMS-SON-58331-R3, issued pursuant to Section 1602 of the Fish and Game Code, in coordination with the California Department of Parks and Recreation. The project involves replacing two existing wooden stream crossings with engineered infrastructure to improve drainage and aquatic passage without expanding the footprint: two new 20-foot galvanized steel culverts—36-inch and 18-inch in diameter—will be installed in unnamed tributaries to Sonoma Creek, and a 20-foot by 12-foot wooden crossing over Schultz Creek will be removed and replaced with a prefabricated steel bridge of identical dimensions. All work is strictly limited to dry conditions, with no construction permitted in flowing water, and no excavation is allowed. Approximately 10 square feet of temporary riparian habitat impact is anticipated, which will be fully restored on-site, and no trees will be removed. The project qualifies for a CEQA Class 3 categorical exemption and is designed to minimize environmental disruption while maintaining functionality of the access roads. The project is located in Sonoma County, California, at Assessor’s Parcel Number 031-011-001, with geographic coordinates 38.40848° N, 122.59671° W. The California Department of Parks and Recreation is responsible for implementation, while the California Department of Fish and Wildlife serves as the regulatory approver. No federal procurement or contractual elements are present; the document is a state environmental notification rather than a solicitation or contract. There are no specified contract values, pricing details, federal acquisition regulation clauses, delivery terms, or evaluation factors, as this is not a federal procurement action. The project’s timeframe is dependent on seasonal hydrological conditions, with work constrained to dry periods, and submission of supporting documentation was required by August 14, 2025, to a designated contact at the Department of Parks and Recreation in Sacramento. The entire scope has been structured to avoid permanent habitat impacts and comply with state environmental regulations without requiring permits beyond the issued notification.