Public Outreach Meeting

Ross Valley Sanitary District Magnolia Trunk Sewer Rehabilitation Project April 16 2014 Public Outreach Meeting

Ross Valley Sanitary District Magnolia Trunk Sewer Rehabilitation Project April 16 2014

Purpose of the Magnolia Trunk Sewer Rehabilitation Project Renovate a critical District pipeline Provide long term reliability and capacity Reduce long term maintenance needs Brown and Caldwell 3

Existing Magnolia Trunk Sewer Constructed in 1960 s and 1970 s Critical facility in District collection system Pipe Materials Techite Asbestos Cement Vitrified Clay Pipe in poor condition Brown and Caldwell 4

Condition assessment of sewers - many problems Holes in sewers Cracked sewers Leaking sewers Exposed gaskets Heavy grease build up Leaking manholes Brown and Caldwell 5

Condition assessment of sewers - many problems Holes in sewers Cracked sewers Leaking sewers Exposed gaskets Heavy grease build up Leaking manholes Brown and Caldwell 6

Condition assessment of sewers - many problems Holes in sewers Cracked sewers Leaking sewers Exposed gaskets Heavy grease build up Leaking manholes Brown and Caldwell 7

Condition assessment of sewers - many problems Holes in sewers Cracked sewers Leaking sewers Exposed gaskets Heavy grease build up Leaking manholes Brown and Caldwell 8

Condition assessment of sewers - many problems Holes in sewers Cracked sewers Leaking sewers Exposed gaskets Heavy grease build up Leaking manholes Brown and Caldwell 9

Condition assessment of sewers - many problems Holes in sewers Cracked sewers Leaking sewers Exposed gaskets Heavy grease build up Leaking manholes Brown and Caldwell 10

Your building lateral Property Line Clean Out Manhole Main Line The District maintains sewer main The property owner maintains the lateral Brown and Caldwell 11

Rehabilitation methods meet project needs Provide a structural pipe Provide required capacity Minimize disruption Reduce construction costs Three rehabilitation methods selected Cured in place pipe CIPP Pipe bursting Open cut pipe replacement Brown and Caldwell 12

Cured in place pipe Brown and Caldwell 13

Pipe bursting Brown and Caldwell 14

Open cut replacement/realignment Improve hydraulic flows Deeper sewer Safer alignment for maintenance New alignment to reduce disruption Coordinate with Larkspur paving and bridge projects Brown and Caldwell McAllister and Lilac South Eliseo-temporary traffic stop 15

Safe access around construction Provide clearly signed alternate routes: Pedestrians Cyclists Automobiles, etc. Safe Routes to Schools Brown and Caldwell 16

Notification during construction Notifications will be issued 3 times prior to construction in your area. 30-Day Prior 7-Day Prior 24/48 hours Prior District Website will track project status District Construction Management on site during all construction activities Contact person and on call response will be available 24/7 Brown and Caldwell 17

Next steps for project Complete the engineering design Coordinate project details: Hall Middle School Mt. Tam Racquet Club Corbet s Hardware Golden Gate Transit and Marin Transit Buses City of Larkspur Bon Air Bridge project Magnolia repaving project ADA compliance efforts Advertise, bid, and construct the project Brown and Caldwell 18

Project construction timing Coordination needed: Construction with Bon Air Bridge project starting late summer 2014 No construction at Hall Middle School while school is in session Coordinate construction with scheduled tournaments at Mt. Tam Racquet Club Some night work required for construction Some weekend/holiday work will be needed mainly for Hall Middle School area Brown and Caldwell 19