Wastewater Treatment Plant (WWTP) Upgrade and Expansion

Wastewater Treatment Plant (WWTP)Upgrade and Expansion Project

Neighborhood MeetingAugust 21, 2018

AgendaOverview of Clean Water ProgramWWTP Upgrade and Expansion Project Update—Upcoming Construction• Construction Phase 1: Site Preparation

—Future Construction• Construction Phase 2: Build the Foundation• Construction Phase 3: Build the WWTP Facilities

Q&A Session

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Outreach Activities

Nov JanMar ‐ May Jun Jul

2017 2018FebJun‐Jul Aug – Sep Aug

20162015Nov – Dec MayJan Jun

Community Outreach Channels ‐ Effectiveness Polling

Postcard MailingCity or Clean Water Program Website & Events CalendarPress Release & ArticlesSocial Media—Nextdoor, Facebook, TwitterEmail or E‐Newsletter

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Overview of Clean Water Program

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Aging Wastewater System Infrastructure

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HEAVYRAINS

Peak Wet Weather Conditions & Insufficient Capacity

SEWER MAIN

MANHOLE

Sanitary Sewer Overflow (SSO)What Causes Sewer Overflows?Sewage, PLUS unintended 

Rain Water Entering the System

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Sewer Overflow Impacts & Regulatory Violations

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SF BAY

LAGOON

CREEKS

Clean Water Program Drivers and Goals

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Align with City’s Sustainability Goals

Provide Higher Levels of Treatment & Capacity Assurance

Replace Aging Infrastructure

RWQCB Cease & Desist OrderNPDES Permit

Clean Water Program

Before & After Treatment

Reusable Clean Water

1. Collect 2. Treat 3. Discharge

New WWTP Treatment Approach to Prevent Sewer Overflows to SF Bay

Pipe, Pump Station, & In‐System Storage 

Upgrades to Prevent SSOs

WasteWater

WWTP Upgrade & Expansion ProjectUpdate

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WWTP Site Location and 

Vicinity

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San Francisco BaySeal Point Park

JoinVillePark

Leslie Creek

Leslie Creek

Kehoe Ave

Seal Slough

ExistingWWTP

Shoreview Ave

Detroit Dr.Site John Lee 

Dog Park

WWTP Site Location

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Leslie Creek

Detroit DriveSite

WWTP Site Layout 

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Aging Existing Facilities to be Replaced 

New Facilities

Existing Facilities to be Rehabilitated/ Repurposed

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WWTP Conceptual Renderings

WWTP Conceptual Renderings

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WWTP Conceptual Renderings

Construction – Phase 1

Site Preparation

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Existing Site ‐ Wide Angle ViewPhoto taken August 2018

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Detroit DriveSite

Existing Site – Aerial ViewGoogle Maps Satellite Capture

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Phase 1 – Site PreparationWork includes:‒Demolish retired facilities‒Mass Excavation‒Dewatering System‒Construction Trailers Setup

Schedule:‒Approximately 10 months starting Spring 2019

Conceptual Rendering of Phase 1 Construction Work

Retired Filters

Retired Digesters

Construction Trailers

Dewatering System

Mass Excavation

Phase 1 – Construction Traffic MitigationPhase 1 – Construction Traffic Mitigation

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WWTP Upgrade and Expansion SiteTraffic Management Plan 

City Approved Haul Routes

Phase 1 ‐ Dust MitigationPhase 1 ‐ Dust Mitigation

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Wet Sweeping

Rumble Strips at Construction Site Exits

Cover Hauling Trucks

Phase 1 – Anticipated Noise & VibrationPhase 1 – Anticipated Noise & Vibration

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Typical construction noise expectedVibration potentially during demolition activity

Existing Routes to be ClosedAlternate Routes

Portion of Detroit Dr. to be Permanently Closed

Phase 1 ‐ Ped/Bike Access Route AlternativesPhase 1 ‐ Ped/Bike Access Route Alternatives

Phase 1Parking Restrictions& Accommodations 

Phase 1Parking Restrictions& Accommodations 

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No Public Parking during Construction

Alternative Parking & Facilities

Seal Point Park Parking & Dog Park

Portion of Anchor Rd Parking Lot

Anchor Rd Public On‐Road Parking

Joinville ParkParking Lot

Phase 1 ‐ Staging of Construction Trailers, Contractor Parking, and Equipment LaydownPhase 1 ‐ Staging of Construction Trailers, 

Contractor Parking, and Equipment Laydown

AREA 1Dale Ave Undeveloped Open SpaceConstruction Trailers & Parking

AREA 3Portion of Anchor Rd Parking Lot

Contractor Parking

AREA 2Anchor Rd Passive Open Space

Contractor Parking & Equipment Laydown

Phase 1 – Setup Staging Area 1Conceptual Rendering

Phase 1 – Setup Staging Area 1Conceptual Rendering

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Contractor Parking

Screened Fence

Construction Trailers

Path Closed During Construction

Phase 1

Phase 2/3

Phase 3

Phase 3

Phase 3

Dale Ave

Future ConstructionPhases 2 & 3

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Phase 2 – Build the FoundationConcept Rendering of Phase 2 Completed Work

Work includes:—Majority of Pile Driving 

—Underground Utilities and Pipes

Schedule: —Tentatively starting Fall 2019 and would last approx. 6‐8 months

—Work overlaps with the Phase 1

Majority of Pile Driving

Underground Utilities & Pipes

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Phase 3 – Build the WWTP FacilitiesConcept Rendering of Completed Project

Work includes:—New Treatment Facilities—Administration Building —Additional Pile Driving—Street  and Landscape Improvements

—Demobilization

Schedule:—Tentatively planned to start Summer 2020

—Work overlaps with Phase 2

Construction duration for all three phases is approx. 5 years total

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Contact Us www.CleanWaterProgramSanMateo.org650‐727‐6870

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How to Stay Informed and Provide Input

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Q&A Session