HomeMy WebLinkAboutDTS-08-002 - Annual Audit Report 2005-2006 - Master Stormwater Management PolicyREPORT
Report To: Chair Christina Weylie and Members
Development and Technical Services Committee
Date of Meeting: January 7, 2008
Submitted By: K. Grant Murphy, Director of Engineering
Prepared By: Diana Lupsa, Engineering Technologist
Ward(s~ Involved: City Wide
Date of Report: December 19, 2007
Report No.: DTS-08-002
Subject: ANNUAL AUDIT REPORT 2005, 2006 -MASTER
STORMWATER MANAGEMENT POLICY
RECOMMENDATION:
That Council receive the attached Executive Summaries for the 2005 and 2006 Annual
Audit Reports, prepared by Totten Sims and Hubicki and further;
That Council continue to endorse the recommendations outlined in the Executive
Summaries (attached;
BACKGROUND:
In 1999, the City of Kitchener commenced a study to prepare a Master Stormwater
Management (SWM) Policy, which would assess existing approaches to stormwater
management, investigate options for modifying the current approach and create aCity-wide
policy for SWM. The final report of the Master SWM Policy was approved at Council on
December 10, 2001 and subsequently filed as a Schedule 'B' Environmental Assessment under
the MEA Class EA.
As part of the Master SWM Policy, an annual audit report is to be completed each year to
summarize the practices carried out to date in each of the categories included in the Citywide
plan, namely:
• The development or site plan applications for the year and associated SWM fees
collected.
• The SWM facilities that have been constructed (or are in the process of being
constructed) over the past two years. This includes new ponds, retrofitting of existing
SWM facilities and the installation of oil/grit separator units (OGS).
• Stream rehabilitation works that have been carried out or are underway.
REPORT:
The purpose of the annual audit report is to indicate whether or not the SWM measures provide
the necessary water quantity control and water quality treatment of stormwater resulting from
infill/redevelopment sites. The audit is completed in conjunction with a review of the capital
budget and an assessment of the following year's budget. The review lists the redevelopment
and infill drainage area for which SWM Redevelopment~lnfill charge Cash-in-Lieu} has been
collected, the drainage area serviced by the facilities built, and the drainage area serviced by
creek rehabilitation works.
At the end of 2006, the recommended SWM Redevelopment/lnfill charge Cash-in-Lieu} was
$15,000/ha, and applies to all redevelopment and infill sites that cannot connect to existing
quality control facilities. The fee is to be used toward the construction/retrofit of SWM facilities.
The SWM maintenance and operation costs are not included in this fee. As these are operating
related expenses, finding a sustainable funding mechanism for these costs is being explored as
part of the stormwater Management Program and Funding Review.
Since the projects often have several phases (environmental assessment, design and
construction) the cumulative comparisons provided in Table 1 allows for a better evaluation of
the program. The 2005 and 2006 SWM Audit Reports summarizes the works that have carried
out as related to the Citywide Plan from November to October of each year.
Table 1. Evaluation of SWM and Stream Rehabilitation (2002-2006)
Drama a Area
g Drainage Area
Year Cash-~n-L~eu .
Serviced by SWM Serviced
Draina a Area ha
g ~ ~
Works ha
~ ~ b Rehabilitation
y
ha
~~
2002 - 2003 10.99 41.1 384
2003 12.81 4.95 0
2004 19.84 0 0
2005 8.01 0 700
2006 9.89 0 0
Tota12002-2006 6.53 ha 46.05 ha 1084.00 ha
At the end of year 2006 the total drainage area serviced by SWM works was only 46.05 ha
compared with 61.53 ha drainage area for which City of Kitchener collected Cash-in-Lieu. But,
during the year 2002 and 2006 there have been a number of stream rehabilitation works
providing water quality enhancements for 1084.00 ha.
Details regarding the SWM works that have been completed between 2002-2006 are provided
in Table 2.
Table 2. Summary of SWM Retrofits/OGS Installations Completed (2002-2006)
Facility
Year Description
of
works Drainage Area
Serviced By SWM
Works (ha)
Pond -Bleams Road at Thistledown Drive 2002 Quality Retrofit 41.1
OGS -Park Street at Victoria Avenue 2003 OGS 4.95
Total 2002-2006 46.05
The implementation strategy for SWM facilities and stream rehabilitation has been reviewed
and, based on the location of redevelopment/infill and the needs of the receiving watercourse,
modified as appropriate. The intent is to provide the greatest protection and enhancement to
the receiving stream system. At the end of 2006, the following projects have been identified as
priorities and, subject to available funds, are proposed to be completed:
Creek Rehabilitation
- Completion of Voisin Greenway rehabilitation -the work has been included in
the 2007 winter works program
- Montgomery Creek rehabilitation from Conestoga Parkway southern crossing}
to Ottawa Street -the timing is to be determined
Pond Retrofit
- Pond 2 in the Huron Business Park -the design brief was completed in 2003
and the construction phase was incorporated into the 2010 capital budget
Pond Retrofit or Creek Rehabilitation
- Implementation of the selected alternative of the Environmental Assessment of
Ward's and Brigadoon Pond -the work was included in the 2008, 2009 and
2010 capital budget
Oil Grit Separator (OGS}
- OGS units will be installed as part of the Capital Works for various projects
The current SWM Policy has functioned well, providing the tools to work towards improvements
throughout the City. Although there have not been initiated to date many SWM ponds retrofits,
each Annual Audit Report has fine tuned the fee collection/implementation process
considerably.
As a way of evaluating how the implementation plan is proceeding and how the SWM
components are performing, a monitoring network has been established since 2001. Data has
been collected every year and analyses carried out to review current conditions. Each report
includes a suggested monitoring program for the following year. The monitoring programs have
been formulated with the intent to build upon the existing data and to gather data from new
creeks that have not yet been sampled.
Typically, a monitoring program requires several years of data before a management strategy
can be evaluated with any degree of confidence. As of the end of 2006 there have been five
years worth of water quality data collected. It was intended that the results will be presented in
a five year Report Card. The Report Card will be auser-friendly document available to a larger
audience. It is expected that the Report Card will be completed in the spring of 2008.
FINANCIAL IMPLICATIONS:
The SWM Redevelopment/Infill fee (Cash-in-Lieu) is being deposited into account 315905 -
WTBI-SWM CERTIFICATION-DEPOSIT. The balance at November 01, 2006 was
$636,044.65.
For the period November 2004 to the end of October 2006, funding received from the collection
of the SWM Fee has been used for the following projects:
Thistledown Pond (2005) - $115,000.00
Voisin Greenway Rehabilitation (2005) - $50,000.00
The available funding will be used for completion of new ponds, retrofit ponds, OGS and stream
rehabilitation works as identified on the priority list.
COMMUNICATIONS:
Copies of the final documents have been forwarded to members of the Steering Committee
(City of Kitchener, GRCA and the Region of Waterloo).
CONCLUSION:
2006 represented the fifth year that the City's Master Stormwater Management Policy has been
in effect. Staff will continue to work with the Consultants and the Steering Committee to prepare
the Report Card and the 2007 Annual Audit.
K. Grant Murphy, P. Eng.
Director, Engineering Services
Diana Lupsa
Engineering Technologist