Lago Ranch Culvert Replacement Project


SCH Number
Public Agency
Regional Water Quality Control Board, Region 1 (North Coast), Santa Rosa
Document Title
Lago Ranch Culvert Replacement Project
Document Type
NOE - Notice of Exemption

Document Description
The primary purpose of the project is to remove and replace an existing failing driveway culvert. The existing 20 linear foot concrete culvert failed through to the roadway and along the outfall delivering sediment into the creek necessitating the use of steel plates for residents only crossing of the creek. The applicant proposes to set up a diversion and baker tank to divert approx 80 lf of the flowing creek around the work site to prepare the site for construction and then remove the existing failed culvert and approx 18 lf of unpermitted gabion baskets. The project includes plans for re-contouring the existing channel through the culverted area to remove grade control barriers that cause backwatering. The plans include installation of precast sections of culvert facility, 56 lf of 72-in reinforced concrete pipe (100 year storm capacity) and set in place with approx 46 cy of concrete slurry. The plans includes regrading slopes and installation of approx 46 lf of bioengineered rock slope protection to prevent additional bank instability that is currently delivering sediment to the creek.

Contact Information
Gil Falcone
Regional Water Quality Control Board, Region 1 (North Coast), Sa
Lead/Public Agency
5550 Skylane Boulevard, Suite A
Santa Rosa, CA 95403

Phone : (707) 576-2830



Notice of Exemption

Exempt Status
Categorical Exemption
Type, Section or Code
Reasons for Exemption
The project involves removal and replacement of the existing failed culvert with a new culvert at the same site for the same purpose and function.

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 or via phone at (916) 445-0613.

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