Caltrans, Highway 254 - Redcrest Rock and Drainage Project

Summary

SCH Number
2011068154
Lead Agency
Regional Water Quality Control Board, Region 1 (North Coast), Santa Rosa
Document Title
Caltrans, Highway 254 - Redcrest Rock and Drainage Project
Document Type
NOE - Notice of Exemption
Received

Document Description
The proposed project includes roadway and drainage restoration at two locations, Post Miles (PM) 22.3 and PM 40.06 located in Humboldt County, on Highway 254. At PM 22.3 the proposed project is necessary because the drainage system and the roadway have failed. The existing cross culvert is plugged with rock and is separated, due to localized earth movement. A new cross-culvert will be placed on a new alignment and the area of the former feeder culvert and junction box will be graded to drain to the new drainage system. At PM 40.06 the proposed project would permanently restore an existing 36-inch diameter culvert. The drainage system and roadway have failed at this location: the roadway embankment slipped and separated the CMP downdrain. The purpose of the proposed project is to stabilize and reconstruct the roadway embankment and restore the drainage system. Caltrans has determined that total project permanent impacts to ephemeral drainages will be approximately 0.0262 acres (329.5 linear feet). The temporary project impacts to ephemeral drainages indentified as waters of the U.S. and State will be approximately 0.026 acres (248 linear feet). In addition, Caltrans has determined that temporary impacts to riparian areas (waters of the State) will total 0.23 acres (10,140 feet^2, 295 linear feet) Caltrans proposes revegetation and additional trees and shrubs will be planted at onsite locations to offset impacts to riparian habitats, improve water quality by shading and cooling waters, and enhance habitat for aquatic species. Caltrans proposed to revegetate 0.32 acres (14,100 feet^2, 440 linear feet) of riparian habitat. Additionally, the drainage work planned should befit water quality by reducing area with excessive erosion. Work within waters of the U.S will only be conducted in the dry season (May 15 to October 15).

Contact Information
Jeremiah Puget
Regional Water Quality Control Board, Region 1 (North Coast), Sa
5550 Skylane Boulevard
Santa Rosa, CA 95403

707 576 2835
707 523 0135

Location

Counties
Humboldt
Other Location Info
Project Location City: Near Redcrest

Notice of Exemption

Exempt Status
Categorical Exemption
Type, Section or Code
S:15301(c)
Reasons for Exemption
Existing highway drainage system with minor impacts.
Download CSV New Search