Middle-Mile Broadband Network Project: ADF-G2-CD4-UG1; 04-25-6-BB2819

The Middle-Mile Broadband Network Project, identified as ADF-G2-CD4-UG1; 04-25-6-BB2819, involves the installation of fiber optic infrastructure within the Caltrans right-of-way along State Route 1 in Marin County, California. Managed by the California Department of Transportation District 4, the project consists of installing approximately 21 feet of underground 2-inch high-density polyethylene conduit and fiber optic cable. The scope of work includes the installation of one vault measuring 36 inches wide by 60 inches long by 24 inches deep, as well as the placement of fiber optic markers at the vault and every 500 feet along the conduit path, with metallic disk markers embedded in the pavement. Construction will utilize open trenching in accordance with a designated traffic control plan, employing temporary traffic control devices and signage. To ensure continuous traffic flow on driveways, steel plates will be used, and all open pits or trenches must be filled or covered during non-working hours. The project is classified as a forecast under NAICS code 237130 and has been granted a Notice of Exemption under Senate Bill 156 of the Public Resources Code. Primary coordination is handled by Patrick Co, an Environmental Scientist, and Brian Gassner, the D4 Environmental Analysis Branch Chief.