Asset Management presented at Tennessee APWA

Water Main Water Main Replacement & Replacement & Renewal ProjectsRenewal Projects

Identification, Prioritization, Justification

34000 Plymouth Road | Livonia Michigan, 48150 | www.ohm-advisors.com

Evan N. Pratt, P.E., Principal, Technical Specialist – OHM, Inc.

CHECK-IN What’s it like in your community or agency??

CHECK-IN What’s it like in your community or agency??

Elected Officials easier to work with than ever?!?

CHECK-IN What’s it like in your community or agency??

Elected Officials easier to work with than ever?!?

The Public is more friendly, patient and understanding??

CHECK-IN What’s it like in your community or agency??

Elected Officials easier to work with than ever?!?

The Publid is easier to work with than ever?!?

HA!

CHECK-IN What’s it like in your community or agency??

Elected Officials are easier to work with than ever??

Value of all of your community’s infrastructure – and who “gets it”?

CHECK-IN Pavement Management plans?

Tools?

CIP?

1 or more Utility Asset Management plans

Tools?

Combined Asset Management plan

Budget for above?

City of Romulus

Area: 35.9 mi2

Population: 2000 census: 22,9792007 estimate: 24,414

Infrastructure: water main: 300 milessan. sewer: 150 milesroads: 220 miles

Approximate Replacement Value: $1 Billion

Simple Tool

Asset Management with Simple Tools and

Historic Data?

Your Tools? Push pin map, spreadsheets, lists, GIS?

Learning Objectives

• Develop an understanding for cheap and cost effective asset management using readily available data

• Review a method for needs prioritization

• Identify additional steps for prioritizing multiple assets

Asset Condition ModelAsset Condition ModelC

on

dit

ion

Point of MajorRehabilitation

Life of Asset

Time

Road Assets

Challenges for Water Main Asset Condition Model

Con

dit

ion

Time

Point of Action

• Environment• Material • System Operation

Two Central Management Questions

• Condition assessment – what is it an how can it be done?

• Prioritization – when to intervene or in what order?

Condition Assessment

Physical Signs• Number of water main breaks

increasing• Increasing age of water mainService Delivery Signs• Discoloration in the water• Inadequate water pressures• Inadequate fire hydrant flows

Condition Assessment

Signs of Increasing Risk• Critical pipe failures• Non-compliance with Safe

Drinking Water Act• Severe breaks when they occur• Angry Planners or Elected

officials…

The W.I.N. Model

Service Delivery• Pressure variations• Fire protection capacity – or ISO hydrant test

results• Pipe friction losses per length of pipe

Physical Conditions• Age of pipe assets• Number of water main breaks• Frequency of breaks• Corrosion

The W.I.N. Model

Risk Management• Severity of breaks• Consequence of failure• Impact on future development potential…

City of Southfield

Area: 26.2 mi2

Population: 2000 census: 78,2962007 estimate: 76,285

Infrastructure: water main: 360 milessan. sewer: 300 milesroads: 242 miles

Approximate Replacement Value: $1.5 Billion

Avg Avg Peak Head lossGroup # D, inch Hr. psi ft/1,000 ft Age Breaks

1 6.7 45 3.42 1947 412 6.4 44 0.9 1972 263 6 39 0.52 1946 74 7.75 59 1.42 1976 175 7.4 51 2.56 1973 216 6.3 43 1.12 1953 277 6.9 47 2.4 1962 338 7 51 1.4 1959 79 12 52.5 0.001 2003 0

10 6.95 55 11.3 1954 40

Quantification of Infrastructure In Groups

Prioritization of InfrastructureFriction Severity Pressure Age Break Community Corrosion WIN Priority

Group Factor Index Factor Factor Factor Impact Factor Factor RankingA 0.30 0.56 0.87 1.00 1.00 1 0.2 4.93 1B 0.08 0.53 0.89 0.99 0.63 0.2 0.2 3.52 6C 0.05 0.50 1.00 1.00 0.17 0 0 2.72 10D 0.13 0.65 0.66 0.98 0.41 0 0.2 3.03 8E 0.23 0.62 0.76 0.99 0.51 1 0 4.11 3F 0.10 0.53 0.91 1.00 0.66 0 0 3.19 7G 0.21 0.58 0.83 0.99 0.80 0.2 0.2 3.81 5H 0.12 0.58 0.76 0.99 0.17 1 0.2 3.84 4I 0.00 1.00 0.74 0.97 0.00 0 0.2 2.91 9J 1.00 0.58 0.71 1.00 0.98 0.2 0.2 4.66 2

Collective Prioritization

When prioritizing water main improvements,also concurrently prioritize for: • Road improvements• Sanitary sewer improvements• Storm sewer improvements

Sanitary Sewer Priority Map

Water Main Priority Map

Roads Priority Map

Street Maintenance and Asset Management

• DPW utilizes asset management principles to manage and prioritize scheduling and type of repair

• Roads are rated based on Pavement Quality Index

Road Infrastructure Prioritization

Water Infrastructure Prioritization

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10,000,000

20,000,000

30,000,000

40,000,000

50,000,000

60,000,000

70,000,000

80,000,000

2005 2010 2015 2020 2025 2030

Years

$ B

ud

ge

tPotential Future Investment Needs

Existing Funding

Needed Funding

Initiating Education Program For Elected Officials

Initiating Education Program For Elected Officials

Learning Objectives

• Developing an understanding for cheap and cost effective asset management using readily available data

• Evaluating a method for needs prioritization• Identifying additional steps for prioritizing

multiple assets

Questions / Answers