Lower Fawn Drive Sewer Rehabilitation Project

2 Documents in Project

Summary

SCH Number
2021050550
Lead Agency
Ross Valley Sanitary District
Document Title
Lower Fawn Drive Sewer Rehabilitation Project
Document Type
NOD - Notice of Determination
Received
Posted
7/30/2021
Document Description
The Ross Valley Sanitary District (RVSD ) Lower Fawn Drive Sewer Rehabilitation Project (Project) entails the construction and rehabilitation, within the existing alignment, of approximately 1,550 linear ft of sanitary sewer mains and related appurtenances within the unincorporated community of Sleepy Hollow, located within the County of Marin. The Project site encompasses approximately 0.6 acres and the total area disturbed would be approximately 8,500 square ft. The Project would include rehabilitation of sanitary sewer mains in the lower section of Fawn Drive and involve: (1) replacing approximately 780 linear ft of 6-in. vitrified clay pipe (VCP) with 8-in. polyvinyl chloride (PVC) pipe via open cut methods and (2) replacing approximately 770 linear ft of existing 6-in. VCP with 8-in. high-density polyethylene (HDPE) pipe via pipe bursting methods. Work would also include the rehabilitation of four existing sanitary sewer manholes. Depth of excavation is projected to range from approximately 5 to 12 ft. The primary objective of this Project is to provide needed capacity and correct defects downstream of improvements constructed in fall 2020 to relieve hydraulic and structural deficiencies and reduce groundwater infiltration with aging RVSD infrastructure. This portion of the system was originally installed in the 1940s and contains numerous structural and operation and maintenance (O&M) defects, with several pipes currently assigned to a 3-month cleaning frequency. Construction is expected to begin in late summer 2021 and is anticipated to be completed by October 2021. Work hours will generally be 8 a.m. to 5 p.m. for all work occurring along Fawn Drive.

Contact Information

Name
Steve Moore
Agency Name
Ross Valley Sanitary District
Contact Types
Lead/Public Agency

Location

Cities
Community of Sleepy Hollow, San Anselmo
Counties
Marin
Regions
Northern California, San Francisco Bay Area, Unincorporated
Cross Streets
Butterfield Road and Fawn Drive
Zip
94960
Total Acres
0.60
State Highways
101, 580
Railways
SMART
Other Information
See NOC Attachment A

Notice of Determination

Approving Agency
Ross Valley Sanitary District
Approving Agency Role
Lead Agency
Approved On
County Clerk
Marin
Final Environmental Document Available at
https://www.rvsd.org/242/

Determinations

(1) The project will have a significant impact on the environment
No
(2a) An Environmental Impact Report was prepared for this project pursuant to the provisions of CEQA
No
(2b) A Mitigated or a Negative Declaration was prepared for this project pursuant to the provisions of CEQA
Yes
(2c) An other document type was prepared for this project pursuant to the provisions of CEQA
No
(3) Mitigated measures were made a condition of the approval of the project
Yes
(4) A mitigation reporting or monitoring plan was adopted for this project
Yes
(5) A Statement of Overriding Considerations was adopted for this project
No
(6) Findings were made pursuant to the provisions of CEQA
Yes

Attachments

Notice of Determination

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