1. Rehabilitation Program impact on Sewer Management
Harry Krinas
City of Hamilton
CNAM 2014 Conference
Toronto, Ontario
May 20-23, 2014

2. City of Hamilton
Population 530,000

3. City of Hamilton Wastewater Collection
2800km (1740 miles ) of Sewer Pipe
138,000 lateral connections (~ 1300km or 858 miles)
2 Treatment facilities
Sewers date back as far as the mid 1800’s
100mm(4”) – 3000mm(120”) & some larger

4. Linear Network
Stats (2014)

5. Rehabilitation History in Hamilton
Early 1990’s – first uses of rehabilitation technologies
2000 – Infrastructure Asset Management
2002 – Rehab program development
2006 – Incorporation of sewer lateral
2008 – Incorporate large diameter pipe
2013 – 300,000 metres (1 million feet )
2014 – 320,000 metres, $77.3M spent

6. Rehabilitation Program Structure
Project Based Contracts
Program Based Contracts

7. Tender Type & Award RFP (Request for Proposal) Evaluated Best Value
Multi Year Performance Based Term
The RFP was for the bidders to propose the service level they were willing to provide and at what cost!!
Due to the significant of bidding process both for the City and the bidders and to try and leverage the best economics we also chose to issue this as a 3 year term contract

8. Best Value Award $13,611.11 Criteria Evaluation Points Maximum Score
Bid “A”
Bid “B”
Ability to perform the work 35 34 30
Financial Capability 15
Staff Experience 14 12
Work Plan, Organization, Customer Service, 13
Materials/Method 20
Total Points
100 90 82
Bid $ $
$1,225,000
$1,150,000
Price/Point
$13,611.11
$14,024.39
The RFP was for the bidders to propose the service level they were willing to provide and at what cost!!
Due to the significant of bidding process both for the City and the bidders and to try and leverage the best economics we also chose to issue this as a 3 year term contract

9. Program Stats

10. Program Stats $77 million from 2003 -2014 320 km from 2003 -2014
Avg of $6.3 Million annually
16 miles or 26 km annually

11. Lateral Rehabilitation History
Council amended by-law effective February 15,
Approximately 250,000 laterals city-wide
Most are Vitrified Clay Tile
Sizes are typically 4”, 5” and 6”
Estimate 100,000 required some type of rehabilitation, repair or replacement

12. Lateral Rehabilitation Requirements
Provide a long-term, continuous one-piece solution for both the Lateral and the Connection
Address structural and infiltration issues
Entry to Private property is not permitted
Minimize disruption to surrounding infrastructure

13. Lateral Structure Lateral and Connection
Standard Specifications and Design
Lateral Pipe Plus connection
Installed as one piece
Lateral Pipe Plus Full Circle Sleeve
Installed as one piece

14. Lateral Program Stats 3,180 laterals Lined 10,800 laterals Inspected
Approx. 31,500m
10,800 laterals Inspected
6 years ( )

15. James St. CIPP 12 buses every half hour
Major north south arterial road
Significant deterioration (two emergency repairs)
Special Design

16. Dundas Community Oldest community in the City
Significant Sewer deterioration issues
13 miles (21 km) rehabilitated in two year
Additional 2km this year
149 laterals (2.2km or 1.3 miles)

17. Deteriorated Sewer? 525mm sewer 3 Segments (178m total length)
Wrc Condition Grade 5
Approx. 25% ovality
6.8 m depth
Good to Very Good Road Condition

18. Decision Factors: Condition Risk Financial Decision: Replacement
Severely Deteriorated
Ovality > 10%
Risk
Financial
Decision:
Replacement
Beyond normal
technical envelope
for CIPP
Elimination
Affordability
Not a wrong decision given the philosophy of the past

19. Decision to Rehabilitate
Factors:
Condition
Severely Deteriorated
Ovality > 10%
Risk
Financial
Decision:
CIPP Rehabilitation
Technically
Possible
Management
Maximum ROI
We consider these factors differently today
Condition: what is technically possible ?
Risk: Management vs Elimination
Financial: Not just to day’s cost but the future costs
These all must be equally considered in decision in order to be as effective as possible
Manage risk maintain service level through the most cost effective means

20. Life Cycle Costs (Capital Investment)
Financial:
Replacement Cost:
$700,000
CIPP Lining Cost:
$68,000
Savings:
$632,000
Impact of Savings:
5.2yrs (2% interest)
Equivalent Annual Cost (EAC)
Cost of Capital 4% (discount rate)
EAC
Concrete
CIPP
Investment
$ ,000
$ ,000
$ ,000
Exp. Lifetime
100yr.
2.55yr.
10yr.
$ ,565
$ ,579
$ ,383
So what do these savings really mean ? If the lining only lasts 10 years have you really saved anything ??
$632,000 Savings Today
In 5.2 years the interest earned on the savings has paid for the Lining.
Life Cycle Cost:
This CIPP was installed in 2003 (ALMOST 11 YEARS AGO !!)
THIS DOES NOT CONSIDER THE SOCIAL & ENVIRONMENTAL COSTS OF REHABILITATION
CIPP was carried out in a matter of days while maintaining traffic flow
Replacement would have taken weeks and would have likely closed the road for a good portion of that time.

21. Results
Before Lining
After Lining
6 Yrs

22. Benefits $77,282,000 spent on CIPP from 1992 to 2014
$231,846,000 estimated replacement cost
$154,564,000 direct cost savings

23. Benefits Backlog & Future Needs
2014
CCTV Inspection Program
Zoom Camera Inspection Program
Capital Programming – Replacement & Rehabilitation
Total Failure Prevention

24. Benefits Deficit elimination Significant cost savings
Significant reduction in contract administration costs
Reduced social impact
Reduced economic impact to businesses
Reduced carbon foot print

25. Lessons Complimentary QA/QC Partnership with Contractor Shared Risk
Standardize Design Specifications
Importance of Programing

26. QUESTIONS
Harry Krinas