Kirkwood Residence Riverbank Repair project, WDID# 5A47CR00049 Dunsmuir, Siskiyou County

Summary

SCH Number
2017118309
Lead Agency
Regional Water Quality Control Board, Region 5 (Central Valley), Redding
Document Title
Kirkwood Residence Riverbank Repair project, WDID# 5A47CR00049 Dunsmuir, Siskiyou County
Document Type
NOE - Notice of Exemption
Received
Posted
11/17/2017

Document Description
High flows during the previous winter (2016-2017) caused bank erosion at two locations below a newly-constructed residence along the Upper Sacramento River in Dunsmuir. The eroded areas, if not repaired, could eventually undermine a portion of the foundation of the new residence. The proposed project consists of filing the two eroded areas with imported angular boulders ranging in size from around 6 inches to 36 inches, placed in such a way as lock together, match the existing slope angle, and not protrude further into the river than the adjacent riverbank. The lowest tier of boulders will be placed in the flowing river, but the boulders will be clean and will not be excavated into the river bottom, so no water diversion will be needed to protect water quality. Willow cuttings and non-woven geotechnical fabric will be placed behind the boulder armoring. No excavation or soil disturbance will be done within the eroded areas; the boulder armoring will be placed only within the already eroded areas. Floodway capacity of the river channel and floodplain will not be reduced. Temporary access for 5-foot wide equipment will be provided along an existing bench below the new residence. No trees or shrubs will be removed. One of the eroded areas is about 15 feet wide and the other is about 20 feet wide. Both extend about 20 feet up the riverbank. Existing trees and brush, mixed with existing boulders adequately anchor the adjacent riverbank.

Contact Information
John Kirkwood
Regional Water Quality Control Board, Region 5 (Central Valley),
415 Knollcrest Drive, Suite 205
Redding, CA 96002

Phone : (530) 224-4845

Location

Coordinates
41.205256°'"N 122.27121°'"W
Cities
Dunsmuir
Counties
Siskiyou
Cross Streets
6200 Scherrer Avenue
Township
39N
Range
4W
Section
25
Base
MDB&M

Notice of Exemption

Exempt Status
Categorical Exemption
Type, Section or Code
S: 15304
Reasons for Exemption
Minor Alterations to Land; The Central Valley Water Board has determined that the Project is categorically exempt from review under CEQA pursuant to California Code of Regulations, Title 14, Article 19, Section 15304, Minor Alterations to Land. Class 4 consists of minor public or private alterations in the condition of land, water, and/or vegetation which do not involve removal of healthy, mature, scenic trees except for forestry or agricultural purposes.

Disclaimer: The document was originally posted before CEQAnet had the capability to host attachments for the public. To obtain the original attachments for this document, please contact the lead agency at the contact information listed above. You may also contact the OPR via email at state.clearinghouse@opr.ca.gov or via phone at (916) 445-0613.

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