What is in your community? The City of Calgary operates and - PDF document

2016-1302 What is in your community? The City of Calgary operates and maintains three distinct water systems within Willow Park community. All pipes outside your property line are the responsibility of The City, and pipes running from the property line into the house are the responsibility of the homeowner. Willow Park utility pipelines – material and age Ductile iron 5% (1964 – 1975) YJDI 1% Concrete 64% (1976 – 1983) (1958 – 2004) PVC 10% Water (1978 – current) 39 km of watermains Wastewater Other 2% 32 km of sanitary mains Cast iron 18% Drainage (1920 – 1967) 29 km of stormwater mains Sanitary pipe types Asbestos Steel with Brick tunnels Cast iron Concrete PVC cement concrete coating Water pipe types Wooden pipes Cast iron Ductile iron PVC AC pipe (no longer in service) Storm pipe types Concrete PVC

2016-1302 What has happened in your community? (Sanitary and storm systems) Cleaning machine and root cutting In mature neighbourhoods, such as Willow Park, root intrusion is a common occurrence. As a part of the preventative maintenance program, root cutting and cleaning is conducted on a three-year cycle. Power fmushing To address the build-up of fats, oils, grease, silt and sediments in the sanitary network, the Willow Park area is on a maintenance plan to power fmush the sanitary main every one to three years. Emergency work When a sanitary main experiences a break or blockage The City must address it immediately to prevent property and environmental damage. This typically involves digging down to the pipe and repairing or replacing it. The timeline for this varies depending on the severity of the break or blockage. Sanitary and storm system maintenance – 2011 to date HAYSBORO ACADIA M L C SAN N RTC A S L F SAN PFL P S A N N R T SAN RTC A C SAN PFL S SAN PFL N L A F P SAN PFL S SAN RTC L MAPLE S A N C L M F P SAN RPR SAN PFL N RIDGE SAN PFL A SAN PFL SAN RPR SAN CLM S SAN PFL F L P N A S SAN SAN PFL SAN CLM SAN PFL RTC SAN SAN CLM RTC C N T A S R SAN C N T A R RPR SAN N S M A L PFL C S L SOUTHWOOD F P S N A N A R T C S L F P SAN CLM N A S S A N P F L SAN PFL C N T A SAN PFL SAN R S RPR SAN PFL SAN PFL SAN RPR N A S C T R M SAN RTC SAN PFL L C S A N N A R SAN P S R PFL S A N C L S A N M C L M SAN PFL S SAN A N R SAN T RPR C SAN N L S A RTC CLM F A N P P Legend S F SAN PFL L SAN RTC SAN PFL Storm Power Flush (STM PFL) S A SAN N Sanitary Repair (SAN RPR) SAN CLM R RTC STM T C STM PFL PFL Sanitary Cleaning Machine (SAN CLM) SAN PFL SAN PFL L F Sanitary Root Cut (SAN RTC) P SAN LAKE CANYON N C R T SAN RTC SAN PFL CLM N S A A Sanitary Power Flush (SAN PFL) S BONAVISTA MEADOWS Sanitary Service Backup BONAVISTA DOWNS

What has happened in your community (Water system) 2016-1302 Watermain replacement projects The City proactively replaces some mains to reduce the risk of future main breaks and to make sure adequate fmows and water quality are maintained. Adjacent valves and hydrants may be replaced and/or upgraded during this work. Metallic pipes are no longer installed in new construction. Corrosion protection program To address challenges related to corrosion in the water network, The City began installing cathodic protection in the Willow Park area in 1999. Watermain fmushing program To ensure water quality, watermains are occasionally fmushed. Condition assessments The City conducts in-pipe inspections, collecting data on the condition of our pipes to plan future main replacements. Emergency work When a water main breaks The City must address it immediately to prevent property damage, environmental damage and to protect water quality. This typically involves digging down to the pipe and repairing or replacing it, followed by fmushing. This works usually causes service interruption. The timeline varies depending on the severity of the break. Water system maintenance – 2011 to date 2011 HAYSBORO ACADIA 2014 2014 2014 2014 2012 2013 2011 2013 2014 2011 2013 2013 2014 2014 MAPLE 2015 RIDGE 2 0 1 5 2014 2014 2014 2015 2014 2014 2 0 2014 1 5 2 0 1 5 2015 2014 5 2015 1 2013 2012 2012 2014 0 4 2 1 4 2014 0 2 1 0 2014 2015 2014 2015 2 2 0 1 4 2015 2014 SOUTHWOOD 2014 4 1 4 0 1 2 0 2 2014 2014 2013 1 2 0 1 4 1 0 3 2014 2 2014 1 0 2 2013 2013 2013 2013 2013 2013 2013 2013 2 Legend 0 1 1 Water service repairs 2011-2015 Water main repairs 2 0 1 3 2016 Water main repairs 2011/12 Water main replacement 2 0 1 4 2013 Water main replacement 2014 2014 Water main replacement 4 0 1 2 2015 Water main replacement 4 1 2 0 Anode retr ofit LAKE Anode replacement BONAVISTA BONAVISTA 2 0 DOWNS 1 1

2016-1302 What is planned for your community The City of Calgary uses the following techniques to upgrade and extend the life of existing systems: Pipe lining Cured-in-place plastic liner will be used to rehabilitate sanitary & storm sewers. This non-destructive method has the lowest impact to residents and can be used to address heavy root infjltration. Anode retrofjt Anodes will be installed to halt further corrosion on existing metallic water pipes, extending the life of the pipes substantially. Sanitary trunk upgrade A new sanitary trunk main will be installed to add capacity to the sanitary system. Ongoing preventative maintenance Sanitary mains in Willow Park will be maintained using power fmushing, cleaning machines and root cutting to prevent issues. Road paving In mature communities like Willow Park, road surfaces are deteriorating due to age and normal use. The City has ongoing maintenance to rehabilitate the road surfaces. 2016-2017 Planned work HAYSBORO ACADIA MAPLE RIDGE 2016 WAT Replacement Future road paving 2016 SAN Upgrade SOUTHWOOD 2016 SAN CIP Future SAN Upgrade 2019 - 2023 Legend Water Main Replacement 2016 (WAT) Sanitary Cured In Place Liner 2016 (CIP) LAKE CANYON Sanitary Upgrade - Future (SAN) BONAVISTA MEADOWS Future road paving BONAVISTA DOWNS

2016-1302 What you will see in your community Summer 2016 » Watermain replacement on Willow Park Drive between Acadia Drive and Willowglen Drive » Sanitary trunk upgrade on Willow Park Drive starting at Willowview Road and Acadia Drive fjnishing at Willowgreen Drive These two projects will involve excavating down to the existing pipe to replace them. There may be temporary traffjc disruptions and detours, temporary parking restrictions, driveway and garage access restrictions, temporary water disruptions, and noise and dust from construction equipment. Fall 2016 » Sanitary main lining along Willowgreen Drive, Willowind Place, and the alleyways of Willamette Drive, Willowdale Crescent and Woodsworth Road Construction crews will be working at manholes along the road and alleyways to insert a liner into the sanitary main where it will be cured it in place. There may be traffjc disruptions and detours, noise from construction equipment, and parking restrictions. The traffjc disruptions will be signifjcantly lower than main replacment work, as the footprint is limited to the immediate area around the manholes.

2016-1302 What you will see in your community Ongoing activities » Preventative sanitary maintenance (as required) City of Calgary crews will conduct preventative maintenance on the sanitary mains – this involves workers accessing the main through manholes in the roadway. This work typically takes one day. » Anode retrofjt (as required) A small section of the road will need to be excavated to expose the mains so that anodes can be attached. This work typically takes one day. » Water main break repairs (as required) Anticipated 2017 activities » Road paving The City will be repaving along select roads in Willow Park by removing the existing asphalt and replacing it with a new layer. There may be traffjc detours and closures, parking restrictions, driveway and garage access restrictions, and noise and dust from construction equipment. It is typically preferable to wait a year before paving over completed water projects to allow the ground to settle.