CA SB378

Requires local agencies with jurisdiction over excavations to allow microtrenching (narrow trenches 4 inches or less in width, 12-26 inches deep) for installing underground fiber optic cables, unless the agency makes a written finding that it would have a specific adverse impact on public health or safety.

Mandates that local agencies adopt or amend policies, ordinances, codes, or construction rules as necessary to permit microtrenching for fiber installation.

Allows local agencies to charge fees for fiber installation permits limited to reasonable costs of processing, inspection, and permit issuance, including expedited review costs if requested.

Maintains that the requirement to comply with existing safety standards, including Public Utilities Commission General Order No. 128, remain unchanged.

Declares fiber installation a statewide concern rather than a municipal affair, making this section applicable to all cities, including charter cities.