water system resiliency renew program · 2020-06-25 · pipe prioritization model preliminary...

Water System Resiliency

RENEW Program June 23, 2020

Purpose

RENEW

Provide best

possible water

quality and utility

service

Proactively

addressing aging

infrastructure now

Reducing the

likelihood of future

disruptive and

costly emergency

repairs

About RENEW

In order to provide customers with the best water quality and

utility service, Middlesex Water Company (MWC) is in the

process of replacing pipes within its distribution system that

are at the end of their useful life.

Middlesex Water Company has approximately 732 miles of

transmission and distribution mains in service area.

Main driver for the RENEW program is to maintain 100 Year

Replacement schedule for all distribution system assets.

Equates to ±38,000 LF of pipe replacement per year.

Water for the Future

The Future of RENEWGoals of RENEW

Optimize the

Selection of Assetts

Design Most

Practical Solution

Efficently Construct

& Implement New

Assetts

“Our RENEW Program helps us to better

preserve our water resources by

methodically restoring the integrity of

our water distribution system within the

project scope area, thereby minimizing

the potential of future leaks or main

breaks in that vicinity”

- Dennis Doll , Chief Executive Officer

Middlesex Water Company

”

1 2 3

RENEW History

Preliminary Engineering

Year Township/s Total Linear Footage of

Main Replaced

2016 Edison, South Amboy 25,000 LF

2017 South Plainfield 30,000 LF

2018 Woodbridge 26,000 LF

2019 Carteret 25,000 LF

2020 Edison, South Amboy and

Metuchen

44,000 LF

Total 150,000 LF (28.4 miles)

Renew History


Service Line Replacements

A total of 3969 services were replaced.

Hydrant Replacements

A total of 230 hydrants were replaced from Year

2016 to 2020 in Five (5) Municipalities

RENEWThree Year Model

Year one will focus on

identifying the next ideal

location for the RENEW

Year One:

Planning

Year two will focus on

designing an appropriate

solution

Year Two: Design

Planning

PhaseDesign

Phase

Implementation

Phase

Year three will focus on the ideal

implementation and construction

of the RENEW Project

Year Three:

Implementation

PLANNING PHASE

Year One

Planning PhaseYear 1

1.1

Identify Potential Areas

1.2

Partner with Peer Utilities

1.3

Condition Assessment

1.4

Selection



Factors that will contribute to the selection of

RENEW replacement assets:

○ Pipe Prioritization Model

○ Historical Main Break Data

○ Customer Complaints

○ Valve Inspection Results

1.1


1.2


1.3


1.4

Selection

o Unlined Cast Iron Pipe

o Age of Pipe

o Input from operations

Pipe Prioritization Model


MWC utilizes a prioritization model as a tool in

the selection of assets for replacement. The

model ranks various criteria and leverages GIS

scripts to determine an asset’s overall risk

ranking.

○ Probability of Failure

○ Consequence of Failure

1.1


1.2


1.3


1.4

Selection

Probability of Failure


Criteria include:

1.1


1.2


1.3


1.4

Selection

o Major Roadways

o Rail Crossings

o Past Break History

o Pipe Age/ Vintage

o Pipe Wrapping

o Pipe Class/ Material

o Bury Depth

o Soil Resistivity

o Pressure

o Slide Areas

o Number of Connections

o Lined/ Unlined

o Transients

o Pressure Fluctuations

o Proximity to Saltwater

o Groundwater

o Electrical Transmission Lines

o Known Manufacturing issues

o Joint Types

o Water Temperature Differential

Consequence of Failure


Criteria include:

1.1


1.2


1.3


1.4

Selection

o Damage to Sensitive Areas

o Damage to Critical Roadways

o Damage to Railways

o Damage to Other Utilities

o Service Outage of Priority

Customers

o Service Outage- Number of

Customers

o Service Outage- Negative

Pressure

o Fire Flow Capacity

o Duration of Outage due to

Deep Pipes

o Flooding Potential

o Specialty Crossings

o Hydraulic Criticality

o Tank Feeds

Normalized Risk Results

1.1


1.2


1.3


1.4

Selection

Partnering with Peer Utilities


Middlesex Water Company will attempt to

secure a partner for the project, preferably a

peer utility:

○ Gas Company

○ Telecommunications Utility

○ Electric Company

○ Sanitary Sewer (Municipal)

○ Storm Sewer (Municipal)

1.1


1.2


1.3


1.4

Selection

Partnering with Peer Utilities


Benefits of Partnering:

● Reduce customer disruption by having utility

construction take place once in a particular

area.

● Project restoration costs can be split among

utility companies.

1.1


1.2


1.3


1.4

Selection



Performing Condition Assessments will allow the following:

o Tailor RENEW project to better match conditions of the main.

o Estimate likelihood that the main may continue to provide satisfactory service

o Help determine remaining service life of main

o Make better decisions regarding main renewal:

o Allow some water mains to remain in service longer

o Prevent some pipeline failures from occurring by intervening sooner

o Increase confidence in decisions (less chance of error)

1.1


1.2


1.3


1.4

Selection



1.1


1.2


1.3


1.4

Selection

Identify loss of integrity

Identify loss of structural

competence or weakening of the

pipe (diminished wall thickness)

Find evidence of liner or coating

failure

Recognize other conditions of

concern, e.g., pipe is

unacceptably out of round.



1.1


1.2


1.3


1.4

Selection

Material Testing

Internal NDT

External NDT

Survey Level Inspection

Desktop Study

Incr

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ost

Qu

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1.1


1.2


1.3


1.4

Selection

Selection


The Selection Phase of the Planning process will have the

following goals:

• Review condition assessment results and prepare

recommendation on specific assets to replace

• Coordinate with Peer Utilities on specific locations

• Award Design contract to a Consulting Engineer

1.1


1.2


1.3


1.4

Selection

DESIGN PHASE

Year Two

DESIGN PHASE

The Design Phase of RENEW contains three

components:

○ Design

○ External Authorizations

○ Procurement/ Bidding Design

External Authorizations

Procurement/ Bidding

Design

Complete Design in 6 months

Surveying

Identify Soils Sampling Locations

(1 sample every 500CY of soil removed)

Prepare 50% Contract Plans

Identify Test Pits

Soils Testing (NJDEP Linear Construction

Program Compliance)

Valve Exercising

Prepare 100% Contract Plans

Take offs and Construction Cost

Estimate

Design

Design

Standard Design Template

Contract Drawings Presentation

Total Linear Footage

of Main to be

Replaced By Street

Utility Conflicts

Identification Notes

Cloud each Utility

Conflict and Number

Identify Each Service

For Replacement by

Address, Tap # and Size

Design Challenges

Old Townships – Buried Storm/Sewer Information

Gather All MWCs Existing Utility Information

Incorrect Gas Markups

External Authorizations

External

Authorizations

External Authorizations contains the

following tasks

Coordination with the County/Township

– Paving Requirements, Construction

Restrictions, Fire Department

Coordination

County/Township Road Opening Permits

Loan Application

Bidding/ Procurement

Bidding &

Procurement

The Bidding & Procurement phases

contain the following tasks

Bid the RENEW Construction Contract

Bid Evaluation

Recommendation

Construction Inspection Services

Award Contract for Construction

IMPLEMENTATION PHASE

Year Three

Implementation PhaseYear 3

The Implementation Phase of the RENEW Program will

focus on the effective construction and implementation

of the new assetts that were designed in the previous

stages of the project lifecycle.

CONSTRUCTION- MWC will handle the Construction

Administration and Inspection associated with the RENEW

project.

ACCEPTANCE- The acceptance component of the RENEW

Project will include completion reports, GIS Data Updates,

and updates to the pipe prioritization model.

Tailor RENEW to better

match the conditions of

the mains

Implementation PhaseYear 3

3.1

Construction

Construction

Inspection

Final Restoration

3.2

Project Closeout / Asset Management

As-Built Drawings

GPS Deliverables

GIS Updates

Construction

Construction

Construction contains the following tasks:

Construction begins

Construction of watermains, disinfect,

pressure test

Service Installations

Hydrant Installations – Pressure test

Backfill with DGA and remove soil

Class 52 pipe (all material provided by

MWC)

Temporary restoration

Construction Inspection

Construction

One crew per Inspector

Four to Five Crew on site each

day

Compile Daily reports each

week and send weekly report

by Tuesday of following week

Bi-weekly Progress Meetings

Phase Deliverables to MWC –

50%, 100%

GPS – Submeter Accuracy

4

Final Restoration

Construction

Typically occurs 3-6 months

after excavation activities are

completed

Includes final paving,

sidewalk, and curb restoration

4

Project Closeout/ Asset Management

Construction

Daily Reports – Document any changes on site, field conditions,

and daily work completed. Reports to be appropriately filed

As-Builts

Service Cards

Hydrant Cards

Valve Cards

GPS Deliverable

GIS Updates

4

Daily Reports

Construction4

Service Cards

Construction4

Hydrant Cards

Construction4

Valve Cards

4

GPS Deliverables

4

MWC collects GPS information on

newly installed hydrants and valves

This information is collected and later

inputted into the GIS system with real

world coordinates

GIS Updates

4

GIS system is updated to reflect the

revised location of water mains,

hydrants, service lines, etc.

This is drafted into GIS, and then as

built records are attached to each asset

as applicable

Examples of Excellence (From Design to Construction)

High Quality Standard Design Drawings

Timely Feedback from Stakeholders - Maintain Budgets and Schedule

Increase in Scope of Work by adding additional sections

Increased Record Keeping and Asset Management

Reduce Emergency Service Calls and Repairs

Maintenance of assets on time

Improved System Resiliency

All MWCs Stakeholders engaged and informed

Lessons Learned…

Construction

Weekly Construction Updates to the Townships

Regular communication between GF/MWC/Contractor

Standard Protocol for damages and repairs during

construction

Document pre-existing road conditions

Sought feedback from entire project team after the

completion of the project

Questions?

water system resiliency renew program · 2020-06-25 · pipe prioritization model preliminary...

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