Hackett Lane Stream Crossing Reconstruction (Notification of Lake or Streambed Alteration, No. EPIMS-SHA-59713-R1)

The California Department of Fish and Wildlife has authorized Samuel Petty to reconstruct a failing stream crossing on an unnamed tributary to Stillwater Creek under EPIMS Notification No. EPIMS-SHA-59713-R1, in compliance with Section 1602 of the Fish and Game Code. The existing concrete structure, which serves as an access point for residential properties, is deteriorating and unable to handle natural stream flow due to plugged and inadequate conveyance pipes, leading to frequent overtopping, structural damage, and obstructed fish passage. The project involves removing the current structure and replacing it with a new one within the same footprint, incorporating four 29-inch by 42-inch diameter squash-type culverts to significantly enhance water flow capacity. The design includes inlet and outlet rock armoring to stabilize the structure and reduce erosion, while ensuring minimal environmental impact by avoiding the removal of any riparian vegetation. Construction is scheduled to occur during the seasonal dry period to minimize disruption to aquatic life and stream function. Ongoing annual maintenance will be required to clear accumulated sediment and debris and to replace rock armor as needed to ensure long-term functionality and compliance with stream protection standards.