Crane Valley Dam Seismic Upgrade Project

Crane Valley Dam Seismic Upgrade Project

The California Department of Fish and Game is executing a Streambed Alteration Agreement, pursuant to Section 1602 of the Fish and Game Code, to the Project applicant, Pacific Gas and Electric Company, for the Out of Lake Phase of the Crane Valley Dam Seismic Retrofit Project. The retrofit Project is the strengthening of the dam with upstream and downstream rock buttressing, core wall stabilization and raising the dam crest to provide additional freeboard above maximum storage level. For purposes of the Stream Alteration Agreement, the Project has been divided into two (2) phases. The Out of Lake Phase consists of the placement of rock buttress materials on the site rock quarry. Development of the quarry and the adjacent stockpile location would result in impacts to streams, as follows: (1) Installation of an 19-inch corrugated metal pipe culvert to replace an existing culvert. The stream is currently culverted in this location but road requirements require that section to be widened to accommodate construction traffic. The new culvert will be up to 100 feet in length, with a maximum capability of 80 cubic feet per second and (2) temporary filing of an intermittent stream to allow for the development of the quarry stockpile area, which will be restored following completion of the ("Agreement") with the Permittee, Pacific Gas and Electric Company, pursuant to California Fish and Game Code Section 1602 for the Out of Lake Phase of the Project. The In Lake phase of the Project will be addressed in separate Stream Alteration Agreement.

Madera