Lago Ranch Culvert Replacement Project
- SCH Number
- Lead 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
Regional Water Quality Control Board, Region 1 (North Coast), Sa
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.
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