sagamore avenue sewer extension city council meeting...feb 03, 2020 · •2018/2019 fb...
TRANSCRIPT
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City of Portsmouth, NH
Sagamore Avenue Sewer ExtensionCity 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
2City Council Meeting – February 3, 2020
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• 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
3City Council Meeting – February 3, 2020
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• Supplemental Environmental Project
o Keeps the dollars local
o Delivers local environmental benefits
o 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
4City Council Meeting – February 3, 2020
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• 2018/2019 FB Environmental Completed Water Quality Sampling
• 2018 Sagamore Ave Sewer Extension Preliminary Design Report
• July 2019 City Council Bond Authorization
Implementation
5City Council Meeting – February 3, 2020
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CURRENT SAGAMORE PROJECT LIMITS
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• Property Owners Will NOT Be Required To Tie-In If They Have A Functioning Septic System
o Sewer Use Ordinance update will include this provision
• Property Owners Will Have To Tie-In If Their Septic System Fails
o New Hampshire Department of Environmental Services (DES) will not issue a permit for a septic system replacement
Important Project Points
7City Council Meeting – February 3, 2020
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• September 4, 2019 Public Meeting at DPW
o Kickoff to field work
o Cost apportionment greatest concern
• Questions Received at Multiple City Council Meetings
• November 25, 2019 Public Meeting at Council Chambers
o Responses to questions
o Updated cost proposal
• December 9, 2019 Public Meeting at Council Chambers
o Defined future City Council decisions needed
Public Meetings
8City Council Meeting – February 3, 2020
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Low Pressure Sewer System• Advantages
o Lower construction costs due to shallower bury depth of pipe (Shallow ledge in project area)
o Is not dependent on grade and topography
o Less invasive construction
• Disadvantages
o Higher property owner annual operation and maintenance costs
Gravity Sewer (No Pressure)• Advantages
o Lower long term costs to the home owner
• Disadvantages
o Higher construction costs
o More invasive/destructive construction
o Requires pump stations based on topography
o Requires permanent easements for cross country sewer lines
Sewer System Type - Low Pressure (LPSS)
9Photo 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
o 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
10
Typical
Annual
Electric
Cost: $36
https://www.youtube.com/watch?v=VW7daUv18Rg
City Council Meeting – February 3, 2020
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Existing EOne Pump System In Place
11
Pump
CoverElectrical
Panel
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Current LPSS In the City of Portsmouth
12
Foyes CornerTuckers Cove
Jones Ave
Pleasant Point
Area
Edmond Ave
Islington Street
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Cost Apportionment Proposal For City Council Consideration
13
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
RO
W o
r Ed
ge
of
Ro
ad
City Council Meeting – February 3, 2020
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• Sagamore Ave Sewer Extension Work Session to Address Outstanding Policy Decisions Such As:
o Cost Apportionment
o What Happens At Sale Of Property
o How to Handle Properties That Do Not Connect Until Later
o If the Cost to Abandon Existing Septic Will be Private or City
o Who Pays for Replacement of Pump at End of Life (~15 Year Mark)
o Who Pays for Maintenance of Pumping System
o Additional Funding Authorization
Motion for Work Session
14City Council Meeting – February 3, 2020