SCH Number 2001099037

Project Info

Title

Reliez Valley Road Subdivision

Description

As part of the development of a 9.5 acre site into 7 parcels (six lots south of the creek one lot north of the creek), the operator proposes to install an arch culvert bridge and an outfall structure impacting the west branch of Grayson Creek at 1979 Reliez Valley Road in Lafayette, Contra Costa County. The bridge will be supported on concrete pier footings located along on the top of the bank. An approximate 16.5-foot clearance will be provided from the bed of the creek to the inside top of the arch. Downstream from this crossing, approximately 150 feet, an existing steel bridge will be removed. From this point downstream approximately 120 feet of the south bank (primarily along the top of the bank) will be graded to construct Ariey Lane and lot 6. This grading will result in the removal of approximately 2,400 square feet of riparian vegetation, including but not limited to oak and willow trees, and blackberry bushes. Within this area, approximately 40 feet east of the existing bridge, an 18-inch outfall structure will be installed on the south bank utilizing the county CD50 design which uses loose rock riprap as an energy dissipater. The project is located on the west branch of Grayson Creek at 1979 Reliez Valley Road in Lafayette, Contra Costa County. The California Department of Fish and Game is executing a Lake and Streambed Alteration Agreement number 1600-2005-0257-3 pursuant to Section 1602 of the Fish and Game Code to the project operator, Jim Wood, Old Oak Land Company, LLC.

2 documents in project