Butterfield/Arroyo-Kenrick Gravity Sewer Improvements Project

Butterfield/Arroyo-Kenrick Gravity Sewer Improvements Project

Project Schedule:  June  - October 2021

Contractor: Ranger Pipelines, Inc.

Work Hours:

Butterfield Road 

Monday - Friday

9 a.m. to 5:30 p.m. (Paving 10-29 & 10/30)*

*Opening all lanes on Fri 10/29 between 2:30—3:30 PM to accommodate school traffic.

Fawn Drive

Monday - Friday

8 a.m. to 5 p.m.

Possible Saturday Paving

Project Update - October 22, 2021

Paving scheduled for October 29 and 30 on Butterfield Rd will include traffic impacts. Work schedule updates will be provided here when available. The project team will strive to keep traffic delays to five minutes or less for the lane closures.

Fawn Drive work to continue through mid November due to unforeseen conditions. Work hours on Fawn Dr. from 8 a.m. to 5 p.m.

Project Summary

The Butterfield/Arroyo-Kenrick Gravity Sewer Improvements Project will install 0.3 mi of diversion and replacement gravity sewer in San Anselmo between Arroyo Avenue and Kenrick Drive (on Butterfield Road) and replace 0.3 mi of gravity sewer in Sleepy Hollow on lower Fawn Drive. The Butterfield section is the last capacity project required in the Cease and Desist Order from the Regional Water Quality Control Board, and the Fawn Drive section provides needed capacity and pipe replacement to prevent sanitary sewer overflows and reduce maintenance requirements.


Also included is 1,600 feet of new sewer line in the Butterfield Road right of way. Approximately 1,050 feet of sewer line in front yard easements will be abandoned. Work on Fawn Drive replaces approximately 770 feet of sewer lines from Butterfield Road to #271 Fawn Drive. 

All RVSD projects and work activities being conducted adhere to the District’s COVID-19 Exposure Control Plan to prepare for and, mitigate against the risk of COVID-19 exposure to the District’s office staff and field workers.

These upgrades to old or outdated system infrastructure will enhance local wastewater system reliability and efficiency.

Work on Butterfield Rd.

Butterfield 2

Click below for a larger view of the project areas.


Project Information and Construction Notices

Lower Fawn Drive

The Notice of Determination (NOD) for the Lower Fawn Drive Sewer Rehabilitation Project was signed on July 21, 2021.


The Final Initial Study/Mitigated Negative Declaration (FIS/MND) for the Lower Fawn Drive Sewer Rehabilitation Project was adopted by the Ross Valley Sanitary District Board of Directors on July 21, 2021.


Click here to also see the Mitigation Monitoring & Reporting Program as part of the environmental review process.

Project Construction Will Include

  • Installation of new sewer lines by open-cut excavation and pipe bursting on Butterfield Rd and Fawn Dr.
  • Abandonment of existing sewer lines including in front yards on Butterfield Rd.
  • Installation of new manholes and property line cleanouts.
  • Excavation, replacement and reconnection of lower sewer laterals to new sewer lines. 

What You Can Expect

Traffic control will be in place (as needed) during construction. 

  • Expect traffic delays between the hours of 8AM and 5PM on Butterfield Rd and Fawn Dr.
  • Pavement restoration will take place at the end of construction.

Project Contacts

Construction Manager:

Justin Seufert, Psomas

Email: justin.seufert@psomas.com

Call: 707-684-1042


Ranger Pipelines, Inc.

Hai Ho, Project Manager

Email: hai.ho@rangerpipelines.com

Call: 415-699-5336

Project Manager - Phil Benedetti

Email: pbenedetti@rvsd.org

Call: 415-259-2949 x212

More Information About Construction Projects

Project Maps

Click here to view the Current RVSD Infrastructure and Capital Improvements Projects map below. After the map opens, click the "Open in Acrobat" box found in the upper right side of the map. From there you can view larger versions of each project area map by clicking on on it once.

Click here to view both current and completed CIP projects on an interactive map. You can also go to the project pages listed on the left of this page for more information about individual CIP projects that are under construction or scheduled to begin soon. Check this page regularly for updates to schedules and other information.

Visit RVSD.org/construction

To find out if there will be construction in your neighborhood.

Email info@rvsd.org

To leave a message or request being added to the project email list.

Call RVSD at 415-259-2949. Our office staff are available Monday - Friday from 7:30 a.m. to 4 p.m. 

We can assist you with emergency service 24 hours per day, seven days per week.

RVSD APPRECIATES your patience as we fulfill our commitment to making strategic long-term infrastructure improvements.