CDOT, High Rock Culvert Rehabilitation Hwy. 101 PM 37.68
Summary
SCH Number
2007048057
Public Agency
Regional Water Quality Control Board, Region 1 (North Coast), Santa Rosa
Document Title
CDOT, High Rock Culvert Rehabilitation Hwy. 101 PM 37.68
Document Type
NOE - Notice of Exemption
Received
Posted
4/9/2007
Document Description
An existing 53-inch diameter culvert on State Rt. 101 at Post Mile 37.68 has a down drain that has become separated at several locations; the invert is also in poor condition. The existing culvert was extended several decades ago into the channel; over the years the culvert has separated, creating sinkholes, erosion and tree growth on top of the culvert. The existing condition of the system has caused transportation of large amounts of sediment downstream into State Park Property. The purpose of the proposed project is to stabilize the roadway, rehabilitate the drainage system, and minimize sediment transport. Roadway runoff has caused the fill prism on the inlet side of the culvert to erode.
Contact Information
Name
Diana Henrioulle
Agency Name
Regional Water Quality Control Board, Region 1 (North Coast), Sa
Contact Types
Lead/Public Agency
Phone
Location
Counties
Humboldt
Notice of Exemption
Exempt Status
Categorical Exemption
Type, Section or Code
Section # 15301
Reasons for Exemption
Restoration or rehabilitaion of deteriorated or damaged structures, facilities or mechanical equipment to meet current standards.
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