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Westend Regional Sewage Services Commission
2016 Annual Report
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Background The Westend Regional Sewage Services Commission was established in 1994 by Regulation of the Government of Alberta. The Commission is composed of two members each from the Town Councils of Turner Valley and Black Diamond. Commission members are appointed for four year terms. The Commission’s operations are funded by the Towns of Turner Valley and Black Diamond according to their proportional annual sewage flows.
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Historic Flow Rates by Town (imp gallons)
Proportion by Town Turner Valley Black Diamond Total Inc/Dec over Prev Yr TV BD 2016 54,171,497 74,068,325 128,239,822 .92 0.42 0.58 2015 53,975,212 74,575,543 128,550,755 .76 2014 69,255,638 113,241,704 182,497,342 1.13 0.38 0.62 2013 68,887,160 92,626,761 161,513,921 0.95 0.43 0.57 2012 64,229,813 105,442,947 169,672,760 0.89 2011 79,322,632 111,832,984 191,155,616 1.49 0.41 0.59 2010 58,129,978 69,935,422 128,065,400 1.18 0.45 0.55 2009 58,234,310 50,021,690 108,256,000 0.82 0.54 0.46 2008 65,076,110 67,458,890 132,535,000 0.99 0.49 0.51 2007 64,003,250 69,783,750 133,787,000 0.48 0.52 2006 63,463,916 71,393,697 134,857,613 0.74 0.47 0.53
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Commission Members November 2013- October 2017
Dona Fluter, Chair Jim Deacon, Vice Chair Lane Park, Member Mike Ross, Member
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Background cont’d The Commission does not have any staff; rather, it contracts operations staff through the Town of Black Diamond, it contracts engineering services through MPE Engineering and contracts administrative services through an independent contractor. Tom Dougall is the principal operator of the Westend facilities. Laurie McCreary-Burke as Secretary/Treasurer provides all administrative work for the Commission.
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2016 Financial Statements 2016 audited financial statements were approved at the Commission meeting March 28, 2017. The Commission’s financial statements and minutes of meetings are posted on the WRSSC’s website at
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Current and Ongoing Issues:
LICENCE TO OPERATE The Commission’s licence to operate was renewed by Alberta Environment and Parks in October for a ten year period. AEP stipulated that Westend must file an upgrade plan by October 2017 indicating the effluent requirements Westend will meet after the facilities are upgraded. Currently the upgrade is estimated at approximately $15M which we expect will be funded by the Alberta Municipal Water Wastewater Partnership (61%), off- site levies contributed by the two Towns (amount TBA) and the remainder will be funded by issue of debentures. We anticipate the upgrade project will commence as early as 2018.
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Current and Ongoing Issues Cont’d:
TURNER VALLEY TRUNK MAIN RELOCATION In September 2015 the Town of Turner Valley applied to ACRP on Westend’s behalf for funding to relocate the Turner Valley portion of the trunk main that is still in the river valley. Turner Valley received approval for funding in February 2016 and is managing this project. ACRP will contribute $720,000 and Westend has taken an $80,000 debenture to cover the remaining costs of this project. We anticipate the project will be substantially complete by November 2017.
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Current and Ongoing Issues Cont’d:
TURNER VALLEY LIFT STATION UPGRADE In 2016 Westend issued a debenture for $400,000 to be used toward upgrading the electronics in the Turner Valley Lift Station electrical building. Westend will use DRP funding to renovate the Turner Valley Lift Station electrical building to accommodate storage of the bioxide needed for on- going chemical injection. Although these two projects are funded separately, we will achieve economies of scale when the projects are tendered together. These projects will commence within the next several months.
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Current and Ongoing Issues Cont’d:
CAPITAL ASSET TRANSFER In Westend negotiated with the Town of Turner Valley to transfer ownership of the property on which the Turner Valley Lift Station is located. Subsequent to the transfer, Westend will undertake to clean up and fence the site. Turner Valley has proposed that Westend provide the Town an easement for a portion of the site which will be maintained and used by the Town. This project is currently on hold awaiting Town approval.
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Current and Ongoing Issues Cont’d:
BLACK DIAMOND TRUNK MAIN RELOCATION In the spring of 2015, Standard General was awarded the contract for moving Westend’s sewer trunk main in Black Diamond out of the river valley. This DRP/FREC construction project was substantially complete by mid-September, 2015. The relocated portion of the sewer line and the design change from an enclosed forcemain to a gravity flow included strategically placed manholes along the pipeline. This type of design is now the standard used in wastewater pipelines. Unfortunately, we had several commissioning problems including H2S off-gassing from the new manholes. MPE Engineering has continued to work on diagnosing and resolving this challenge since December 2015.
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Current and Ongoing Issues Cont’d:
OVER-STRENGTH SEWAGE BYLAW/POLICY The problems with the new trunk main in Black Diamond brought to light the impact of over strength sewage and understanding H2S spikes. Consequently, Westend reviewed over-strength sewage policies and bylaws of a number of municipalities and identified that BOD5, TSS and FOG are the three most common parameters monitored and surcharged. Westend has an agreement with the two municipalities stipulating Westend will apply a surcharge to a municipality if it’s flow contains over-strength sewage but neither the means of monitoring sewage strength, the parameters defining over-strength sewage nor the amount of surcharge to be levied are defined.
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Current and Ongoing Issues Cont’d:
OVER-STRENGTH SEWAGE BYLAW/POLICY The combined levels of BOD5 and TSS collected from both Towns is monitored on a weekly basis (24 hr composite sample). The combined and individual level of FOG is not monitored. The individual levels of BOD5 and TSS collected from TV or BD is not monitored on a regular basis (only a few snap shots in time are available).
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Current and Ongoing Issues Cont’d:
OVER-STRENGTH SEWAGE BYLAW/POLICY The yearly average comparisons (see appendix) show a trend toward higher levels of BOD5 and TSS. Despite I&I which influences the sewage concentration, BOD5 and TSS are typically less then 200 mg/L. The last few years show some monthly mean concentration two to five times higher.
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Current and Ongoing Issues Cont’d:
OVER-STRENGTH SEWAGE BYLAW/POLICY To begin to address this issue: MPE is currently taking base-line data to determine the amount of BOD5, FOG and TSS each municipality is discharging into the sewage treatment facilities. Once we have base-line data, we can determine whether it will be more cost effective to continue to charge each municipality according to the amount of flow OR whether it would be more cost effective to implement a sewage strength monitoring and surcharge program.
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Current and Ongoing Issues Cont’d:
OVER-STRENGTH SEWAGE BYLAW/POLICY Cont’d Going forward, Westend will work with the Towns to create a policy and bylaws defining the meaning of “over-strength sewage” as well as the means of identifying over-strength sewage release into the system and enforcement of penalties. The intent of the policy and bylaws is to enable Westend to enforce penalties on the offending municipality and to allow the municipality to enforce penalties on the offending customer if the need arises.
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Current and Ongoing Issues Cont’d:
OVER-STRENGTH SEWAGE BYLAW/POLICY Cont’d In the meantime, Westend has arranged with the two Municipalities to forward all development permit applications from proposed new businesses to enable Westend engineers provide feedback on the potential for over- strength discharge. In addition, Westend believes that a public education program aimed at reducing the strength of BOD5, FOG and TSS discharged to the system by residents and businesses should be developed. No timeline or funding for development of this program has yet been determined.
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Current and Ongoing Issues Cont’d:
UPCOMING STRUCTURAL CHANGES In November 2016 the Commission held a retreat to review it’s organizational structure and to develop a process for determining future staffing needs in relation to the increasing complexity of the Commission’s operations and administration. The Commission anticipates it will lose experienced Commission members following the municipal elections in October 2017. The Commission met with the CAOs on March 3, to outline the structural, financial and personnel challenges the Commission is encountering. The Commission will be meeting with SRRUC on April 11, 2017 to commence discussions about a possible merger.
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Questions?
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Appendix
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Population Reported on 2016 Census Pop Est of Approved Subdivisions
Pop Design Capacity Remaining Pop Est of Approved Subdivisions TV BD TOT TV by 2027 TOT APR 2,559 2,700 5,259 6,830 1,571 929 1,100 2,029 Population 2011 2016 TOT 4,540 5,259 More people = more stuff in the system – less water in the system = higher concentration of BOD5 and TSS Total Flow Volume 2010 2011 2012 2013 2014 2015 2016 TOT 582,197 869,011 771,348 734,257 829,650 584,403 582,990 Total flow volume has not increased significantly 2011 – 2016; water restriction levied mid-2013 & lower rainfall last two years
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Yearly BOD5 and TSS Means BD & TV 2010-2016
2011 2012 2013 2014 2015 2016 BOD5 136.43 97.65 135.70 111.37 170.58 189.13 231.75 TSS 76.89 59.24 69.54 219.68 241.71 285.77 289.35 Proposed limit Over the past several years the trend is for higher concentrations of BOD5 and TSS discharged into the system. Yearly Median BOD5 and TSS BD & TV 2010 2011 2012 2013 2014 2015 2016 BOD5 123.53 90.75 133.91 110.75 127.20 170.25 205.00 TSS 78.00 56.73 69.50 241.50 212.98 186.00 Proposed limit
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High-Strength Sewage – Consequences
Excess levels of BOD5 Can generate H2S in the collection system which: Is associated with strong odours. Impinges on the safety of workers and the public. Is corrosive to concrete. Uses up treatment capacity. Can cause upgrade of facilities sooner than required.
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High-Strength Sewage – Consequences
Excess levels of TSS Uses up treatment capacity Generates more sludge within the treatment cells. Can cause upgrade of facilities sooner than required. Excess levels of FOG Requires more frequent flushing and cleaning of collection system. Requires more frequent hydrovac of lift stations. Has the potential to limit hydraulic capacity of service lines and the collection system.
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