City Council Meeting City of Portsmouth, NH February 3, 2020 - - PowerPoint PPT Presentation

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City Council Meeting City of Portsmouth, NH February 3, 2020 - - PowerPoint PPT Presentation

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Sagamore Avenue Sewer Extension City Council Meeting City of Portsmouth, NH February 3, 2020 Suzanne Woodland, Deputy City Attorney Terry Desmarais, PE, City Engineer Introduction Origin of the Sagamore Sewer Project Addressing Public

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City of Portsmouth, NH

Sagamore Avenue Sewer Extension City Council Meeting

Suzanne Woodland, Deputy City Attorney Terry Desmarais, PE, City Engineer

February 3, 2020

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  • Origin of the Sagamore Sewer Project
  • Addressing Public Questions and Concerns at Public

Meetings

  • Motion for Work Session

Introduction

2 City Council Meeting – February 3, 2020

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SLIDE 3
  • Pre 2005 Failed Septic And Use Of Holding Tanks
  • 2005 Project First Appears CIP
  • 2008 Engineering Study
  • 2010 Bacteria Study by DES
  • 2011 Engineering Update
  • 2014 Great Bay Non-Point Source Study (DES)

Origin Of This Project

3 City Council Meeting – February 3, 2020

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SLIDE 4
  • Supplemental Environmental Project
  • Keeps the dollars local
  • Delivers local environmental benefits
  • Links with other projects in the watershed
  • DPW Area Stormwater Treatment Project
  • Water Quality Monitoring
  • Lafayette Road (DOT) Stormwater Project
  • Peverly Hill Road Stormwater Improvements
  • March 2016 City Council Approves Consent Decree Second

Modification

Incorporation of Project into Consent Decree

4 City Council Meeting – February 3, 2020

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SLIDE 5
  • 2018/2019 FB Environmental Completed Water Quality

Sampling

  • 2018 Sagamore Ave Sewer Extension Preliminary Design

Report

  • July 2019 City Council Bond Authorization

Implementation

5 City Council Meeting – February 3, 2020

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SLIDE 6

CURRENT SAGAMORE PROJECT LIMITS

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  • Property Owners Will NOT Be Required To Tie-In If They Have

A Functioning Septic System

  • Sewer Use Ordinance update will include this provision
  • Property Owners Will Have To Tie-In If Their Septic System

Fails

  • New Hampshire Department of Environmental Services (DES) will

not issue a permit for a septic system replacement

Important Project Points

7 City Council Meeting – February 3, 2020

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SLIDE 8
  • September 4, 2019 Public Meeting at DPW
  • Kickoff to field work
  • Cost apportionment greatest concern
  • Questions Received at Multiple City Council Meetings
  • November 25, 2019 Public Meeting at Council Chambers
  • Responses to questions
  • Updated cost proposal
  • December 9, 2019 Public Meeting at Council Chambers
  • Defined future City Council decisions needed

Public Meetings

8 City Council Meeting – February 3, 2020

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SLIDE 9

Low Pressure Sewer System

  • Advantages
  • Lower construction costs due to shallower bury depth
  • f pipe (Shallow ledge in project area)
  • Is not dependent on grade and topography
  • Less invasive construction
  • Disadvantages
  • Higher property owner annual operation and

maintenance costs

Gravity Sewer (No Pressure)

  • Advantages
  • Lower long term costs to the home owner
  • Disadvantages
  • Higher construction costs
  • More invasive/destructive construction
  • Requires pump stations based on topography
  • Requires permanent easements for cross country

sewer lines

Sewer System Type - Low Pressure (LPSS)

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Photo credits to Engenuity Group Inc. and the Town of Ocean Ridge Florida

City Council Meeting – February 3, 2020

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  • Long Track Record
  • 60,000 Installs in New England
  • Industry Standard
  • Simple And Reliable, Least

Amount Of Worry

  • 10-15 Year Pump Life Span
  • Local Installation And Long

Term Ownership Have Been Successful

EONE Low Pressure Pump Stations

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Typical Annual Electric Cost: $36 https://www.youtube.com/watch?v=VW7daUv18Rg

City Council Meeting – February 3, 2020

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SLIDE 11

Existing EOne Pump System In Place

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Pump Cover Electrical Panel

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SLIDE 12

Current LPSS In the City of Portsmouth

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Foyes Corner Tuckers Cove Jones Ave Pleasant Point Area Edmond Ave Islington Street

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SLIDE 13

Cost Apportionment Proposal For City Council Consideration

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Owner’s Cost Street Public Sewer Main Sewer Lateral Curb Stop Private Sewer Lateral (PSL) All Work Executed By City Contract

Pump and Connection

(Close To House)

City’s Cost

ROW or Edge of Road City Council Meeting – February 3, 2020

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  • Sagamore Ave Sewer Extension Work Session to Address

Outstanding Policy Decisions Such As:

  • Cost Apportionment
  • What Happens At Sale Of Property
  • How to Handle Properties That Do Not Connect Until Later
  • If the Cost to Abandon Existing Septic Will be Private or City
  • Who Pays for Replacement of Pump at End of Life (~15 Year Mark)
  • Who Pays for Maintenance of Pumping System
  • Additional Funding Authorization

Motion for Work Session

14 City Council Meeting – February 3, 2020