REQUEST FOR DIRECTION
DATE: December 11, 2017 Report No. EPW-17-064
TO: Laurie Hurst, Chief Administrative Officer
FROM: Jeff Miller, Director of Engineering and Public Works
SUBJECT:
Title
Inflow and Infiltration Strategy
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ESSENTIAL QUESTION:
How will inflow and infiltration activities that occur in the public and private realms be funded?
RECOMMENDATION:
Recommendation
That the Committee of the Whole receive Staff Report EPW-17-064 for information, provide any additional direction to staff as the COTW considers advisable, and direct staff to develop a policy for 50/50 split of costs for dealing with inflow and infiltration activities that occur in the public and private realms.
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BACKGROUND:
On September 18, 2017, Council received a Committee of the Whole report EPW-17-046 with respect to inflow and infiltration (II); see Attachment A. Council requested that additional information such as the order of magnitude costs be prepared in order to better understand the scope of the issue.
The following assumptions were utilized to determine costs for the various works. These costs are on an order of magnitude scale and would be further refined as condition information is gathered and detailed design occurs.
Assumptions:
* All 399 suspected cross connections will need to be separated.
* All cross connected service lines will require separation and with at least one new service line to be added.
* There is no cost allowance for excavation through rock.
* The cost to install a new storm service line or sanitary service line on the private portion of the service is approximately $20,000 (if both lines require replacement, the cost would be $40,000).
* The cost to install a new storm service line or sanitary service line on the public portion of the service will be $5,000 (if both lines require replacement and are within the same trench, the cost would be $6,000).
* The collection mains do not need to be regraded in order to achieve minimum grade...
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