ilver Star Water Utility 2011-2012 Annual ReportManager, Small Utilities is responsible for the operation and management of this system, with oversight provided by the General Manager,

Silver Star Water Utility 2017 Annual Report

Regional District of North Okanagan Prepared for: Interior Health and RDNO 9848 Aberdeen Road Prepared by: James de Pfyffer, Manager, Small Utilities Coldstream, BC Contributor: Connie Hewitt, Water Quality Technologist V1B 2K9 Submitted: February, 2019

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TABLE OF CONTENTS

INTRODUCTION ................................................................................................................... 1

BACKGROUND ..................................................................................................................... 1

WATER SYSTEM OVERVIEW .............................................................................................. 1

TREATMENT REQUIREMENTS ........................................................................................... 2

CONDITIONS ON PERMIT ................................................................................................... 2

Provide a Source Protection Plan for each Water Source ...................................................... 3

Provide a Certified Operator to Operate the System .............................................................. 3

Operate According to your Water Quality Monitoring Program ............................................... 4

Raw (Untreated) Water Monitoring ..................................................................................... 4

Treated and Distribution Water Monitoring ......................................................................... 5

Cross Connection Control Program ....................................................................................... 6

Provide a Turbidity Monitoring Program ................................................................................. 6

Provide Continuous Online Monitoring of the Water Disinfection Process .............................. 7

Chlorine Disinfection .......................................................................................................... 7

Online Chlorine Monitoring ................................................................................................. 8

Chlorine – By Products in Distribution Water ...................................................................... 8

Contact Time ...................................................................................................................... 9

Long Term Plans for Source, Treatment and Distribution System .......................................... 9

Progress on SSW achieving BC Drinking Water Treatment Objectives 4-3-2-1-0 ............... 9

Mid T Water Treatment Facility ..........................................................................................10

Planning for Filtration.........................................................................................................11

Filtration Exclusion Criteria ................................................................................................11

Emergency Response / Notification ......................................................................................12

Provide Monthly Reports and an Annual Summary ...............................................................12

Monthly Reporting .............................................................................................................12

Annual Reporting ...............................................................................................................13

Action Planning for SSW ...................................................................................................13

CONCLUSION ......................................................................................................................14

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APPENDICES

APPENDIX A .................. Silver Star Water Utility System Overview Map

Silver Star Water Utility Water Mid T Sample Sites

APPENDIX B .................. Silver Star Water Utility Water Source Assessment & Groundwater

Protection Plan - Progress on Recommendations / Action Plans

Strategic Plan Progess

APPENDIX C .................. 2017 SSW Water Quality Sampling Program

APPENDIX D .................. 2017 Comprehensive Summary of Raw Water Sources

APPENDIX E .................. 2017 Silver Star Water Distribution Microbial Results

2017 Silver Star Source Microbial Results

APPENDIX F .................. 2017 Silver Star Water Utility Turbidity Results

APPENDIX G .................. 2017 Silver Star Manganese Iron Results

APPENDIX H .................. 2017 Silver Star Chlorine Results

APPENDIX I .................... Silver Star Water Trihalomethane Results

APPENDIX J ................... 2017 Silver Star Chlorine Contact Time

APPENDIX K .................. 2017 Silver Star UVT Results

APPENDIX L ................... Silver Star Mid T Site Plan

APPENDIX M .................. 2017 Silver Star Protozoa Results

APPENDIX N .................. 2017 Silver Star Consumption Data

APPENDIX O .................. Silver Star Incident Tracking

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ACRONYMS BCAWQ British Columbia Approved Water Quality Guidelines BFD Backflow Prevention Device CCCP Cross Connection Control Program CH Chlorine Handling CT Contact Time (chlorine) GCDWQ Guidelines for Canadian Drinking Water Quality EOCP Environmental Operator Certification Program ERP Emergency Response Plan DWO Drinking Water Officer DWPR Drinking Water Protection Regulation GWPP Groundwater Protection Plan IH Interior Health MWWT-II Municipal Wastewater Treatment Level II RDNO Regional District of North Okanagan SCADA Supervisory Control and Data Acquisition SS Sampling Site SSW Silver Star Water Utility SWA Source Water Assessment THMs Trihalomethanes TOC Total Organic Carbons TTHMs Trihalomethanes UV Ultraviolet UVT Ultraviolet Transmissivity WD-II Water Distribution Level II WT-I Water Treatment Level I WT-II Water Treatment Level II WTP Water Treatment Plant WWC-I Waste Water Collection Level I

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INTRODUCTION The Regional District of North Okanagan (RDNO) is pleased to present the 2017 Annual Report for the Silver Star Water Utility (SSW). This report is a requirement of the British Columbia Drinking Water Protection Act, and provides an overview of the following:

A description of the water source and how it is treated;

The water system and distribution to the customers of SSW;

The environmental operator classification program (EOCP) classification for the SSW and operators;

The annual water monitoring program;

How the water system is monitored;

A summary of the 2017 water quality analysis; and

How the system is managed to achieve the safest and highest quality water possible. The SSW annual report is available to the public through the RDNO website.

BACKGROUND The SSW system was constructed in the 1980s and was operated as a private utility owned by Silver Star Mountain Resort Ltd. until 1992 when it became a service of the RDNO. The RDNO Manager, Small Utilities is responsible for the operation and management of this system, with oversight provided by the General Manager, Utilities and the RDNO Board of Directors. RDNO employs a water system operator by contract to complete day to day operation and maintenance tasks. The contract includes a requirement for the operator to be available to respond to emergencies 24 hours a day, 7 days a week, and have a backup operator available to respond as necessary.

WATER SYSTEM OVERVIEW SSW provides potable water to 15 commercial and 771 residential connections. All connections are metered. The following provides a summary of SSW with an overview figure of the utility provided in Appendix A:

The source water for the utility is from both surface water and groundwater.

o Two (2) Surface water, mostly runoff from snow melt, is collected and stored in the Paradise Lake (Paradise) and Vance Creek (Vance) open water reservoirs.

o Groundwater is currently supplied from 7 operational bedrock wells.

All water from the surface water and groundwater sources is directed through the Mid T Water Treatment Plant (WTP) where it is irradiated with Ultraviolet (UV) light, chlorinated and directed to the Mid T reservoir for storage.

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The Mid T reservoir is an ‘enclosed’ reservoir with 4 cells to provide a baffled flow effect for improved chlorine Contact Time (CT), and each cell can be isolated for individual cleaning while maintaining sufficient storage and CT in the other 3 cells.

From the Mid T reservoir, the treated water is supplied by gravity through the distribution system to the majority of residential and commercial customers in the Village and on the Knoll.

The Ridge Booster Station pumps water up through The Ridge subdivision’s distribution system to The Ridge reservoir, and to the Alpine Meadows subdivision.

The Attridge reservoir is a small open water reservoir located immediately upslope of the Mid T WTP. It is the original storage reservoir for Silver Star Village built circa 1980, but it is currently not used for water supply.

TREATMENT REQUIREMENTS The treatment levels at SSW are compliant with the Provincial Drinking Water Treatment Objectives (Microbiological) for Surface Water Supplies in BC (also referred to as 4-3-2-1-0 objectives) as follows:

4 log removal or inactivation for viruses – is achieved through chlorination

3 log removal or inactivation for protozoa (Cryptosporidium and Giardia) - is achieved through a combination of chlorination and UV

2 treatment barriers – is achieved through UV and chlorination

1 NTU maximum turbidity – monitoring of the water indicates that the water before treatment is consistently below 1 NTU

0 presence of E.coli – water sampling confirms there is no presence of E.coli in the treated water system (and no E.coli in the raw water in 2017)

Water that meets the criteria described above can apply for a Filtration Exclusion. RDNO completed protozoa sampling in 2016-2017 to support an application to IH. A more detailed discussion that supports the application for Filtration Exclusion is provided in Section 5.7.

CONDITIONS ON PERMIT The following sections correspond to the Conditions on Permit outlined in the letter from IH dated August 26, 2010, and April 9, 2015:

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Provide a Source Protection Plan for each Water Source The following reports provide the basis of the Groundwater Protection Plan (GWPP) and the Source Water Protection Plan for SSW:

Golder Associates Ltd (Golder) - April 18, 2008, Initial Phases in the development of a Groundwater Protection Plan for Silver Star Resort area, (File #07-1440-0092). Prepared for RDNO.

TRUE Consulting Group (TRUE) - August 2011, Source Water Assessment and Groundwater Protection Plan, Silver Star Water Utility. Prepared for RDNO.

Both of these reports are available on the RDNO website (www.rdno.ca) under: Services → Utilities → Silver Star Water Utility. Hardcopies of these reports have been provided to the IH Drinking Water Officer (DWO). Golder completed the initial phase of the GWPP in 2008. TRUE was retained to prepare a Source Water Assessment (SWA) and complete the GWPP. The SWA project was initiated in September 2010 and included input from a Technical Advisory Committee (TAC). The TAC consisted of RDNO staff, the SSW DWO, Silver Star Ski Resort Staff, Provincial Staff and Local Interest Groups. The SWA Final Report was completed on August 31, 2011. As the SSW is within a Controlled Recreational Area (CRA) with limited land use, only low and moderate risks were identified. Appendix B provides a summary of the recommendations from the GWPP and the SWA, and the progress on the recommendations, and is the basis of the Assessment Response Plan.

Provide a Certified Operator to Operate the System The RDNO contracts Aberdeen Electric Ltd. to operate and maintain the SSW system. Warren McKim of Aberdeen Electric Ltd. is the Chief Operator for SSW, and is responsible for 24 hours a day, 7 days a week emergency response assistance when required. The operator schedule includes a minimum of 6 site visits per week. The operator also has access to Supervisory Control and Data Acquisition (SCADA), a computer system that allows for remote monitoring and operation of the SSW system, and checks the SSW system from his office between site visits. The SCADA system also provides alarms to the operator when the system is not operating within normal operating set points (i.e. for chlorine, power, UV treatment, etc.). The SSW Distribution System is certified through EOCP as a Water Treatment Facility Level II (WT-II), and as a Water Distribution Facility Level II (WD-II) (EOCP Facility # 382). The Chief Operator, Warren McKim (EOCP #1336) has certifications for Chlorine Handling (CH), Water Distribution II (WD-II), Water Treatment I (WT-I), Waste Water Collection I (WWC-I), and Municipal Wastewater Treatment II (MWWT-II). The overall water system operations, maintenance and infrastructure improvements are managed by the Manager, Small Utilities and the General Manager, Utilities.

http://www.rdno.ca/index.php/services

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Operate According to your Water Quality Monitoring Program The water quality monitoring program for SSW is based on the requirements of the Drinking Water Protection Regulation (DWPR) Schedules A and B, the Guidelines for Canadian Drinking Water Quality (GCDWQ), and the British Columbia Source Drinking Water Quality Guidelines (WQG-01) and it is reviewed annually. The 2017 SSW Monitoring Program and Schedule is provided in Appendix C. The goal of treatment for SSW is to eliminate the health risk of pathogenic microorganisms and reduce the presence of microbial growth within the distribution system. The objectives of the water quality monitoring program are to provide sufficient monitoring to ensure that treatment is effective and that the minimum disinfection levels are maintained to the end of the line. If parameters are not maintained, the operator will respond. The SSW operator collects weekly bacteriological water samples which are submitted to an independent, nationally accredited lab for analysis, CARO Analytical Services (CARO) (presence/absence tests are conducted in-house at RDNO as necessary). Lab results are sent to IH and the RDNO and uploaded to WaterTrax, a third party online database that the RDNO utilizes to store lab data for all RDNO water utilities. WaterTrax sends automatic alerts to RDNO water quality staff and the Manager, Small Utilities for any results that are out of compliance with standards. Some analysis is completed in the RDNO lab such as UV Transmissivity, Manganese, Iron and Sulphate. The lab has a Quality Assurance and Control program in place.

Raw (Untreated) Water Monitoring Comprehensive sampling for a full suite of parameters is completed on all water sources annually with the 2017 provided in Appendix D. Parameters include physical properties such as hardness, color, turbidity; metals arsenic, iron, zinc and inorganics constituents’ boron, fluoride, nitrogen. All parameters were within the CCDWQ Maximum Acceptable Concentrations (MAC) and Aesthetic Objectives (AO) with the exception of the following:

Iron levels in one well was above the AO of <0.30 mg/L o Well #12 was 1.45 mg/L

Manganese levels in three wells were above AO of <0.05 mg/L o Well #3 was 0.0663 mg/L o Well #5 was 0.103 mg/L and 0.147 mg/L o Well #12 was 0.2850 mg/L

Zinc levels in one well was above the AO of <5.0 mg/L o Well #12 was 5.72 mg/L

Turbidity in two wells were above the MAC of 1 NTU o Well #5 was 1.1 NTU and 2.7 NTU o Well #12 was 23.6 NTU

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Other parameters tested for on the untreated source water are:

Bacteria samples are analysed weekly on the raw water line. There is a sample line that allows a sample from the surface water sources, Paradise and Vance reservoirs. There is also a raw water line for wells when they are in use. There were no E.coli positives within the surface water sources, but 8 out of 33 samples analyzed had a presence of Total Coliform in the raw water line entering the Mid T WTP. As the water is treated with chlorination and UV, this is not a health issue in the treated water but highlights the importance of treatment.

Ultraviolet Transmissivity (UVT) is analyzed as both filtered and unfiltered weekly to monitor the treatment process and is alarmed so that the operator can react immediately if the process is not sufficiently working. All filtered and unfiltered results show that the UVT was above 99.2% which is above the validated UV units of 81%.

Selenium is monitored quarterly on Well 2 as outlined in the COP as this well had a presence of selenium is 2003. The results from 2017 show that the selenium is within the CCDWQ Maximum Acceptable Concentrations (MAC).

Two surface sources, Vance and Paradise Reservoirs, are brought online in the winter months. Before the sources are brought online and during use, Manganese, Iron and Colour are monitored at the Paradise and Vance Reservoirs, the Mid T surface source raw water line, and the Mid T Treated SS “c”. This is due to colored water in 2016 caused from higher levels of manganese. These parameter are monitored to proactively observe changes in the Paradise and Vance Reservoirs in order to react if the coloured water issues occur again. In 2017, the manganese, iron and colour were all within the CCDWQ Maximum Acceptable Concentrations (MAC).

Treated and Distribution Water Monitoring According to the DWPR, Schedule B “Frequency of Monitoring Samples (Escherichia coli and Total Coliform bacteria) samples per month is 11 as estimated using the Silver Star Mountain Resort pillow count of 10,062 in 2017. The microbial sampling completed at Silver Star in 2017 was 24 samples per month or 6 samples per week of the treated water. The number of samples will be reviewed for the 2019 Water Quality Program. The Treated and Distribution Sampling Site (SS):

Mid T Treated SS “a” – draws water from Cell 4 of the Mid T reservoir after UV treatment and chlorine injection (although before full contact time has been achieved through Mid T reservoir).

Mid T Treated SS “c” – represents “first customer” after contact time in the Mid-T reservoirs.

Pinnacles – represents the “first customer” in the Village.

Fire Hall – provides a good representation of the typical chlorine levels in the Village.

Grandview – “last customer” in The Knoll subdivision.

Maintenance Shop - “last customer” on the west end of the system, after The Ridge Booster Station.

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The water quality monitoring sites are located within the system to insure good representation of the water system as a whole which includes the village and the ends or “last customers”. Other factors in water quality monitoring include the number of sources that are in use, ground and surface water combined or surface or groundwater only. The sampling locations are shown in Appendix A. In 2017 there were no microbial positives in the SSW treated water. A full summary of the microbial sampling results are provided in Appendix E. The operator monitors chlorine residual (free and total) and turbidity at all samples sites during the weekly microbial sampling. Trihalomethanes (THMs) chlorine by-products are sampled quarterly. More discussion regarding chlorine and turbidity is provided in the Turbidity Monitoring Program section, below.

Cross Connection Control Program The RDNO has a Cross Connection Control Program (CCCP) for all water utilities owned by RDNO, including the SSW. The CCCP program is focused on identifying high and moderate backflow risks and ensuring annual compliance of backflow device testing for these facilities. Currently SSW has 15 commercial and 371 residential connections. The commercial customers are considered high or moderate risk while residential are generally considered a low risk. An ongoing assessment of the high and medium hazard facilities at Silver Star is under way. In June 2014 the RDNO adopted the “Regional District of North Okanagan Cross Connection Control Regulation Bylaw No. 2651, 2014”, which applies to all RDNO operated water utilities.

Provide a Turbidity Monitoring Program The following provides a list of the 5 continuous online turbidity analyzers monitored by the SCADA system in the SSW. A drawing in Appendix A identifies analyzer sites and the site descriptions are as follows:

Mid T WTP SS “a” - analyzes water from a service line connected to the first contact cell of the Mid T reservoir (cell 4) monitoring the treated water moving into the distribution system.

Mid T WTP SS “b” - analyzes water from a port on the raw water transmission main from Paradise and Vance open water reservoirs (Paradise Turbidity at Mid T) monitoring the blended raw surface water sources.

Mid T WTP SS “c” - analyzes water from the water connection serving the WTP, monitoring the treated water at the “first customer”.

Mid T WTP SS “d” - analyzes water from a port on the raw water transmission main from the groundwater wells, monitoring the blended raw well water sources.

Vance Creek Pump House - analyzes raw water from Vance Reservoir from a port on the raw water line located at the Mid T WTP.

This data can be accessed in real-time using the SCADA system. The alarm set point for turbidity is 1.0 NTU at the first contact cell of the Mid T reservoir (Mid T WTP SS “a”). If the turbidity at

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this location exceeds 1.0 NTU, IH would be notified as per the RDNO notification checklist/procedure – operator, provided in Appendix G of the SSW Emergency Response Plan (ERP). The SSW Emergency Plan and Emergency Response updates are provided to IH DWO annually. Online raw water turbidity results from October to December 2017 are provided in Appendix F. The turbidity analyzers were connected to SCADA in October, therefore there was no SCADA data from January to September. Operator grab samples for raw water turbidity are provided from January to December 2017 in Appendix F. Turbidity samples at the Vance and Paradise Raw water line are generally only measured when the surface water sources (Vance and Paradise reservoirs) are in use during the peak demand times corresponding with the winter ski season. On most dates in 2017 the raw water turbidity at the Mid T WTP was less than 1 NTU. However, the turbidity of the raw water from the Vance Reservoir was > 1 NTU at start up in October through December. This turbidity was reduced by blending with the groundwater sources at the Mid T WTP. With this blending the turbidly peaked at about 0.69 NTU ( Mid T WTP SS “a”). The water delivered into the distribution system was maintained at < 1 NTU. At the same time the water from the Vance Reservoir also measured high in colour. Upon further testing it was found that the colour and the turbidity was being generated from manganese and iron in the Vance Reservoir and possibly from the transmission main to the WTP. To deal with this the transmission main between Vance and Paradise is flushed before the ski season each year until colour and manganese levels are within acceptable aesthetic levels. See Appendix G.

Provide Continuous Online Monitoring of the Water Disinfection Process

The SSW has a dual disinfection process with Ultra Violet (UV) radiation followed by chlorination. The UV disinfection is a physical disnfection process that works very effectively at inactivating protoza, such as Crptosporidium and Giardia. Chlorine is effective in bacteria and virus control and is used to provide a disinfectant residual in the distribution system.

Chlorine Disinfection The following provides a summary of the chlorine dosing protocol at SSW:

At the Mid T WTP, the water is dosed at 2.00 mg/L (ppm). This dosing rate provides typical resultant distribution residuals of:

o 1.41 to 1.89 ppm at the Pinnacles – “first customer”

o 0.95 to 1.74 ppm at the Fire Hall

o 0.77 to 1.74 ppm at the maintenance building – “last customer”

o 0.96 to 1.72 ppm at the Grandview on The Knoll – “last customer”

o 1.26 to 1.69 at the Mid-T Treated SS “c” – “first customer”

The RDNO manages the system to have a minimum free chlorine residual of 0.2 mg/L at the ends of the distribution lines (at the “last customer”).

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Online Chlorine Monitoring SSW has three (3) online chlorine residual analysers at the following locations:

Mid T WTP SS “e” – analyzes a sample 10m after the chlorine injection within the Mid T facility (see drawing in Appendix A).

Mid T WTP SS “a” – analyzes a sample from within the 1st cell of the Mid T reservoir.

The Ridge Booster Station

The operator completes chlorine residual sampling in the distribution system with a handheld chlorine meter and records the results in a spreadsheet on each site visit (six per week). The chlorine alarms for the Mid T chlorine analyzers are as follows:

Reservoir chlorine residual

o High 3.0 mg/l, 300s delay

o Low 0.5 mg/l, 5m (300s) delay

Mid T chlorine residual

o High 4.5 mg/l, 600s delay

o Low 0.5 mg/l, 10m (600s) delay

A summary of the 2017 chlorine residuals is provided in Appendix H.

Chlorine – By Products in Distribution Water Trihalomethanes (THMs) are organic compounds formed as a by-product of disinfection. Ten distinct THM compounds are possible but only four occur to any significant degree in treated drinking water:

Chloroform

Bromodichloromethane

Dibromochloromethane

Bromoform

Collectively, the above THM compounds are referred to as total trihalomethanes (TTHMs). TTHMs are formed when chlorine and/or bromine react with organic matter naturally present in water. The level of TTHMs in treated water depends on numerous factors including: Total Organic Carbons (TOC), temperature, pH, bromide ion concentration, chlorine dose, and water age. The Maximum Allowable Concentration of TTHMs as per the GCDWQ is based on a locational running annual average of a minimum of quarterly samples taken at the point in the distribution system with the highest potential TTHM levels. TTHMs in SSW distribution have been monitored

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since 2011. TOCs are precursors for Total Trihalomethanes (TTHMs) with a higher occurrence in surface water. The 2017 SSW distribution TTHM’s average is lower (25 ug/L) than the GCDWQ MAC. Appendix I provides the results of the 2017 THM results. The results show that the THMs are within standards. THMs are highest in September due to the low water use in the summer months corresponding to a higher water age and higher temperatures.

Contact Time Contact time (CT) is a function of chlorine dosing and time that the water is in contact with the chlorine and is an important factor to ensure sufficient treatment for viruses in the SSW supply. CT for SSW was reviewed in the following letter report:

Agua Consulting Inc. (Agua) – July 8, 2008. RE: Silver Star Mountain Water System Vance Creek Reservoir and Well 13 Disinfection Effectiveness Assessment. Prepared for the RDNO.

The report is provided on the SSW page of the RDNO website (www.rdno.ca). The Agua report examines the CT with chlorination only, to full build out of 22,500 pillows1. The report concludes that with chlorination alone, 180 min-mg/L is required for 3 log inactivation of Giardia, which is achieved until the build out is equivalent to 14,900 pillows. The current (2017) pillow units developed at SSW is 10,062. The Agua report provides for a CT of 215 min-mg/L for 12,500 pillows. Hence, 3 log inactivation of Giardia is achieved at SSW with chlorination alone. The UV treatment plant at SSW achieves the 4-3-2-1-0 objective of dual disinfection, and with a dosing rate of 40 mJ/cm2 provides greater than 3 log inactivation credit for Protozoa, including Giardia and Cryptosporidium. Based on the winter peak parameters, Agua calculates that a total development build out of 25,000 pillow units can be accommodated before additional disinfection efforts are required.

Long Term Plans for Source, Treatment and Distribution System

Progress on SSW achieving BC Drinking Water Treatment Objectives 4-3-2-1-0 The following provides a summary of SSW’s progress on achieving the BC Drinking Water Treatment Objectives 4-3-2-1-0:

4 log reduction or inactivation for viruses – SSW uses chlorine to inactivate viruses. Based on peak flows at SSW and water quality parameters, the required contact time for 4-log virus inactivation is 12 min-mg/L, which is well within the contact time of 215 min-mg/L for 12,5002 pillow units.

3 log inactivation of protozoa – with a dosing rate of 40 mJ/cm2, UV treatment at SSW provides greater than 3 log credit for protozoa inactivation.

1 The Agua report refers to “Bed Units” which are equivalent to “pillow units” at SSW. 2 12,500 pillow units are used to provide a conservative estimate for contact time and is above the current pillow unit

estimate of 10,062.

http://www.rdno.ca/

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2 treatment barriers – The SSW has a dual disinfection process with Ultra Violet (UV) radiation followed by chlorination. SSW is currently disinfecting with free chlorine and UV treatment, and residual chlorine is also maintained in the distribution system with a minimum objective of 0.2 ppm at the “last customer”, with an actual minimum typically maintained at 0.8 ppm at the “last customers”.

1 NTU maximum turbidity – online continuous turbidity monitoring is conducted at SSW, as described in Section 5.5. The analysis demonstrates that the turbidity meets the 4-3-2-1-0 objectives of:

o Source turbidity before disinfection does not exceed 1 NTU 95% of the time in any 30 day period.

o Peak turbidity readings do not exceed 5 NTU for more than two days in a one year period.

Turbidity results for 2017 provided in Appendix F also meet the criteria.

0 bacterial indicators in treated water samples – Coliform bacteria are easily controlled with chlorine and UV light, both of which are employed at Silver Star. Sampling of the raw water from Paradise and Vance has been increased to weekly when these sources are in use, in anticipation of a filtration exclusion application to demonstrate that the raw water meets the criteria of not exceeding 20 Colony Forming Units (CFU)/100 ml, and/or Total Coliform not exceeding 100 CFU/100 ml.

Calculations for chlorine contact time are provided on the spreadsheet in Appendix J.

Mid T Water Treatment Facility UV treatment was installed at SSW Mid T WTP and became fully operational in December 2012. The UV reactors were initially started in January 2011, but treatment was intermittent due to failures with the Ultraviolet Transmissivity (UVT) analyzer. The root cause was the quality of source water that caused a film to develop quickly on the UVT analyzer, artificially dropping the UVT reading to below 81% and triggering the automatic turn off set point for the UV reactors. The UVT analyzer was replaced in 2014 with a unit that wipes the glass at each reading, eliminating the buildup of film plaguing the previous unit, and although the device communicates properly with the UV reactors, it did not communicate with the SCADA system during 2017 (Note, a SCADA software upgrade was completed on April 30, 2018 and the UVT analyzer is now communicating properly and can be seen by the operator on-line). The UV reactors operate at a constant manual setting of 40 mJ/cm2, providing a sufficient dosing rate to inactivate protozoa in water with a UVT of 80% or better. The UV units are validated to 81% and the system is programmed to shut off if the UVT falls below 81%. Previous to the connection to SCADA, UVT measurements from the analyzer were recorded manually by the operator to ensure a recorded history of UVT. Manual UVT measurements taken from samples provided to the RDNO lab are in Appendix K, and confirm that the UVT remained within the required operating parameters for the UV reactors.

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Planning for Filtration Although not a requirement of a Filtration Exclusion, a conceptual plan for filtration has been completed (as this was a requirement of a Filtration Exclusion application previously granted by IH). The SSW treatment study was completed in 2007 by Agua Consulting Ltd. (provided at the SSW page at www.rdno.ca). Possible technologies identified for future filtration include pressure filtration, cartridge filtration or membrane filtration. If filtration is required, bench testing would be conducted to identify the most appropriate technology. The land footprint for future filtration has already been identified, with the conceptual plan provided in Appendix L. Future filtration would occur as an addition to the Mid T UV treatment facility.

Filtration Exclusion Criteria Both the Water Treatment Study (Agua, 2007) and the Strategic Water Plan Update (TRUE, 2011) have concluded that SSW is a good candidate for filtration exclusion. Criteria set out by the Drinking Water Treatment Objectives (Microbiological) for Surface Water Supplies in BC (2012), the Drinking Water Treatment Objectives (Microbiological) for Ground Water Supplies in BC (2015), Decision Tree for Responding to Turbidity Events in Unfiltered Drinking Water (2013) and the Guidelines for Canadian Drinking Water Quality (2017) will be used in the Filtration Exclusion application. In the past 5 years SSW has been monitoring and collecting information to meet the criteria in the Filtration Exclusion. An application for Filtration Exclusion is planned for 2019. The following outlines a few of the criteria and objectives: SSW has two surface water reservoirs, Vance and Paradise. These reservoirs are brought online for the peak winter season November to April to supplement the wells. Monitoring for Cryptosporidium and Giardia in source waters will provide valuable information for a risk- based assessment of treatment requirements3. In the winter season of 2016-2017 during surface water sources use, a monthly sampling program for protozoa was implemented for the blended raw surface water sources to assess background Cryptosporidium and Giardia. Over the five sample dates, there was one viable Cryptosporidium found. The Mid T treatment facility provides UV disinfection which effectively inactivates Cryptosporidium and Giardia and with the addition of chlorine provides a 3 log inactivation for these protozoa. Results of the protozoa sampling program can be found in Appendix M. The raw water source meets the Filtration Exclusion criteria just before treatment, with turbidity under 1 NTU, microbial under 20 CFU/ml of E.coli (with no sample measuring positive for E.coli), under 100 CFU/ml of Total Coliform, and extremely low protozoa levels. At the beginning of the 2013-2014 ski season, the turbidity of raw water from the surface water reservoirs measured above 2 NTU. This was determined to be a result of aged water in the transmission main from the reservoirs, and to deal with this issue a flushing port was installed at the Mid T WTP in 2014. Current protocol now requires the transmission main to be flushed prior to bringing these surface water sources online. In 2017 the average turbidity was 0.42 NTU.

3 Guidelines for Canadian Drinking Water Quality, Summary Table ( February, 2017)

http://www.rdno.ca/

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Emergency Response / Notification A comprehensive SSW Emergency Response Plan (ERP) was completed in 2011 which was updated in 2017 and a comprehensive update to be completed in 2018. Sampling training and RDNO small utility ERP training for the Operators is completed annually and occurred in April 2017. RDNO Utilities staff, as well as the operators are all instructed on how to use the following supporting documents in times of water quality changes or emergencies:

1. SSW Emergency Response Plan

2. SSW Water Quality Deviation Response Plan

The above documents contain the contacts, criteria, and procedures necessary to assist operators and staff to make timely, informed decisions. Staff participate in mock emergency training scenarios annually. SSW must inform customers when their drinking water is not safe to consume or use. A Water Quality Advisory is released when the water poses a modest health risk. A Boil Water Notice is released when there is a known or possible health impact to the customer. An advisory or notice is delivered as quickly and efficiently as possible. Notification may include “Alert” road signs, radio and/or media releases. Under specific circumstances notification is hand-delivered. In 2018, the RDNO developed a new method to provide notification to its customers about announcements, media releases and updates. Customers are advised to subscribe to the Silver Star Water Mailing List by going to www.rdno.ca and clicking on “Subscribe for Updates” and subscribe for Silver Star Water email updates.

Provide Monthly Reports and an Annual Summary

Monthly Reporting Monthly reports are provided to the IH DWO which includes:

Weekly microbial results (Total Coliforms and E.coli) entered into WaterTrax;

Chlorine residuals during microbial sample collection entered into WaterTrax;

Chlorine residuals from SCADA – daily average (since August 2017);

Turbidity collected by the operator;

Turbidity from SCADA – daily average (since October 2017);

Daily flow readings from sources;

Daily flow readings through UV trains and to the Mid T reservoirs;

Chlorine residuals collected by the operator;

Daily contact time calculation sheet for 3 log reduction for Giardia; and

Weekly UV Transmissivity at the Mid-T.

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Annual Reporting Appendix N provides a chart of the average Monthly Water Consumption for SSW from January to December 2017. The average summer water consumption was 7.8 ML per month ( April 1 - November 30). The total consumption for April 1 to November 30, 2017, was 62.5 ML. The average winter water consumption was 19.7 ML per month (December 1- March 31). The total consumption for December 1 - March 31, 2017 was 78.7 ML. The SSW used a total of 141.2 ML of water in 2017. Appendix O provides a summary of operation incidents that occurred at SSW for 2017 and how each incident was resolved. The three open surface water reservoirs and dam structures (Paradise, Vance and Attridge) are regulated under the BC Dam Safety Regulation and undergo routine inspections and annual dam safety inspections. The Operations, Maintenance and Surveillance Manual was revised in 2014 and was submitted to the Dam Safety Branch of the BC Ministry of Forests, Lands and Natural Resource Operations. The following provides a list of work and activities completed outside the regular maintenance and operational activities for 2017:

Weekly dam site inspections were conducted by the operator at Paradise, Vance and Attridge reservoirs.

June 6 – Annual dam safety inspections for Paradise, Vance and Attridge reservoirs.

October – Annual distribution line flushing and hydrant maintenance.

October – Installation (replacement) of two reservoir access hatches at the Mid T reservoir.

November – Installation (replacement) of snow retention fencing on roof of the Mid T WTP.

Action Planning for SSW As SSW currently meets Provincial standards for treatment and is a relatively young utility, projects focus on improvements and asset renewal of some aging facilities. No large capital projects are planned for the next 10 years. The following provides action items planned for 2018 (or future):

Submit Filtration Exclusion application to IH;

Continue with cross connection control assessments for high risk facilities;

Complete Asset Management Plan for utility;

Improve radio communications between the Mid T WTP, Well 10, Paradise and Vance;

Upgrade SCADA software to high speed connection for remote communications;

Improve water system alarms and controls, so that a low chlorine alarm or a high turbidity alarm will shut off flow through Mid T WTP;

14


Connect Wells 1 and 3 to SCADA;

Replace Well 5 pump house (2020); and

Replace Well 4 pump house (2021).

CONCLUSION The program objectives for the water utilities owned and operated by the RDNO are:

Provide Clean, Safe drinking water;

Reliable delivery;

In Quantities to meet current and future demand;

Continuity of service; and

“Water Quality Advisories”– only a rare event.

At SSW, the RDNO has made significant strides in fulfilling the RDNO program objectives, as well as requirements stipulated by IH, and in implementing BC’s Drinking Water Protection Act and Regulations. The RDNO will strive for implementation of system improvements within the constraints of the SSW budget. Any inquiries about this report or requests for more information about SSW should be directed to the RDNO at 250-550-3700 or emailed to [email protected].

mailto:[email protected]


APPENDIX A

Silver Star Water Utility System Overview Map

Silver Star Water Utility Water Mid T Sample Sites

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To Well #13, Paradise Reservoir

and Vance ReservoirAttridge ReservoirTWL: 1,638.46m

Ridge PRV

Well #3 PSWell #5 PS

Well #1 PS

Well #4 PSWell #2 PS

Well #12 PS

Milky Way PRV

Ridge Booster

Ridge ReservoirTWL: 1,732m

Volume: 1,020m³

Firehall

The Grandview

The Pinnacles

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Well #4 Untreated

Well #3 Untreated

Well #5 Untreated

Well #2 Untreated

Well #12 Untreated

Well #1 Untreated

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Mid T Treated SS "a"Mid T Treated SS "c"

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Monashee Rd

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access road

Silver Star Water Utility - Sampling and FacilitiesThis map was compiled by RDNO, using data believedto be accurate; however, a margin of error is inherent in all maps. This product is distributed without warranties of any kind, eitherexpress or implied, including but not limited to warranties of sustainability or particular purpose or use.

Plot Date: Oct 22, 2018 1:7,500Scale: 0 500 1,000250Meters

Legend#0 Sampling Station - Raw Water

#0 Sampling Station - Treated Water

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Well #13 PS (Private)

Well #10 PS

Milky Way PRV

Vance ReservoirTWL: 1,661.6m

Volume: 203,613m³

Mid-T ReservoirRidge Reservoir

Paradise ReservoirTWL: 1,718.6m

Volume: 61,300m³

Vance Valve Station

Paradise Valve Station

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APPENDIX B

Silver Star Water Utility Water Source Assessment & Groundwater

Protection Plan - Progress on Recommendations / Action Plans

Strategic Plan Progess

Silver Star Water Utility Water Source Assessment & Groundwater Protection Plan - Progress on Recommendations

Number Recommendation RDNO Response/Strategy

Completion Date

or In Progress2019 Action Plan

GW 1 Spill Response Plan (SRP)

RDNO confirmed that Silver Star Mountain Resort has SRP for their vehicles

and confirmed with Silver Star Fire Chief they respond to vehicle spills.Complete Contact Ministry of

Transportation

GW 2 Surface Water Management Zones

Added to Routine Maintenance Schedule for operator to inspect drainage

around well sites during spring drainage conditions.

Routine

Maintenance

Map 50m diameter Buffer

Zone at each Well Head and

provide to SSMR and to

Volunteer Fire department

GW 3 A Well Closure Program - Well 4 RDNO has designated Well 4 as an Emergency Backup Well. In Progress Add to ERP

GW 3 B

Well Closure Program- Wells 7, 8, 9

and 11

Wells 7, 8, 9 and 11 are not the responsibility of RDNO and are owned by

Silver Star Mountain Resort. These wells are low risk to the RDNO wells as

they are down gradient or within another drainage area.

n/a n/a

GW 4

Protect Wells from Surface Water

Infiltration Annular seals have been installed at Wells 1, 2, 3, 12. In Progress Budgeting for Well 5 in 2021

GW 5

Mapping of Groundwater Protection

Areas

All development at Silver Star must go through a permitting process through

the planning/building department of RDNO. As part of the planning process,

all applications are referred to Engineering for comment. At this stage,

engineering can comment on capture zones of wells.

Development

Approval Process

Map 50m diameter Buffer

Zone at each Well Head and

provide to SSMR and to

RDNO Planning and Utilities

GW 6 Adopt Best Management Practices

RDNO and Silver Star Mountain Resort have good communication regarding

work to be completed. BMPs are practiced.

Regarding the horse barn at Parking Lot "E", it will not be moved in forseeable

future - drainage is away from Well 5.

In ProgressConduct inspection of

drainage occasionally, during

rain events and spring melt

GW 7 Provide Mechanism for Periodic Review

The SSWU operator completes site visits continually (3 times per week or

more). The operator and Manager Small Utilities are in frequent

communications and the Manager Small Utilities completes site specific

inspections when requested by the operator or as triggered by other events

throughout the year. Action Items are added to the list and completed based

on a risk priority basis.

Complete 2018 Review in 2019

GW 8 A Monitoring Triggers

Comprehensive water quality analysis is completed annually for all supply

wells (including Well 4) and surface water sources. Parameters are monitored

for compliance to Canadian Drinking Water Guidelines.

Complete 2018 Continue in 2019

GW 8 B

Monitoring Triggers - Selenium

Monitoring

Selenium monitoring in Well 2 has been increased to quarterly to assess

trending and examine if is increasing.Sampled Quarterly Review sample frequency

Recommendations to Protect Groundwater Sources

The following table provides tracking of RDNO response or strategy for response regarding the recommendations within the Source Water Assessment and Groundwater Protection Plan

completed by True Consulting, Aug. 31, 2011 for the Silver Star Water Utility. The Assessment Response Plan was updated October 2018.

Number Recommendation RDNO Response/Strategy

Completion Date

or In Progress2019 Action Plan

SW 1

Master Fencing Plan to Minimize Cattle

Drift

Master Fence Plan completed by MFLNRO. A cattle fence was constructed at

the southern boundary of the SSSR in the summer of 2011 to exclude cattle

from the reservoir capture zone. The fence line constructed was identified by

MFLNRO as the main breach allowing cattle in the the Silver Star CRA (and

the reservoir capture zones). This work was completed in partnership with the

RDNO, MFLNRO, BCTS and SSSR and partially funded by a Community

Works Fund.

Complete Maintained by SSSR

SW 2 Public Education

New dam signs were posted in 2018. Letters can be sent out in billing

invoices. Public information open houses are provided periodically. Website

updated with a page specific to SSWU, for example posting of the monthly

water quality reports and flushing notifications.

In Progress

Plan and Budget for Signage.

Develop Communication Plan

with RDNO Communications

Officer

SW 3 Mapping of Mountain Bike Trail Network

The Bicycle Trail Network is owned and maintained by SSMR and mapping

trail bike facilities would not benefit RDNO water quality objectives.

Inspections of Vance and Paradise diversion ditches are completed annually

to identify bike trail crossings and noted erosion. SSSR is notified of any

issues and responds promptly. The diversion ditches are inspected weekly

when filling and in the fall before snow fall.

Completed 2018 Continue in 2019

SW 4 Inspect Reservoir Fencing Regularly

Wildlife Exclusion Fences at Paradise Lake, Vance Creek and Attridge Brook

Reservoirs are inspected and repaired annually after freshet as required.Completed 2018

Complete annual inspection

and maintenance

SW 5 Review Fuel Storage

SSSR confirms that the fuel tank at the Mid T WTP is a double walled tank.

SSSR has a response procedure and a spill kit on site to address any spills in

the event of a spill. As part of that procedure, SSSR will contact RDNO in the

event of a spill to assess possible risks to the SSWU sources.

In Progress

Request updated copy of SRP

from SSSR and review in

2019

SW 6 Update Emergency Response Training

RDNO completed updating the Emergency Response Plans for all utilities,

including SSWU, 2018. Operator training occurred in June 2018.Completed 2018 Continue in 2019

Acronyms

BCTS BC Timber Sales

CRA Controlled Recreation Area

ERP Emergency Response Plan

GWPP Groundwater Protection Plan

MFLNRO Ministry of Forests, Lands and Natural Resource Operations

RDNO Regional District of North Okanagan

SRP Spill Response Plan

SSSR Silver Star Ski Resort Ltd.

SSWU Silver Star Water Utility

SWA Source Watershed Assessment

WAP Watershed Assessment Plan

Recommendations to Protect Surface Sources


APPENDIX C

2017 SSW Water Quality Sampling Program

Silver Star

Sampling

Chlorine

Turbidity

THM's

Selenium

UV Transmissivity

Sample Sites WaterTrax ID#Bacterial Sampling

250 mL Caro Bacterial

THM Sampling

(2 -125 mL amber bottles)

*No Air Gap

Pinnacles 71E1 Weekly - Bacterial

Grandview 7180 Weekly - Bacterial March, June, September, December

Firehall 717F Weekly - Bacterial March, June, September, December

Mid T Treated SS "a" 71E0 Weekly - Bacterial March, June, September, December

Maintenance Bldg 215BE Weekly - Bacterial

Mid T Treated SS "c" 36412 Weekly - BacterialNew January 2018

first customer

Mid T Treated SS "c" 36412

Weekly

Monthly

(2nd week of the month)

New January 2018

Manganese

Iron

Colour

Weekly for the first 4-6 weeks when

surface source come online.

Monthly for the rest of the season

Operator Tasks

At distribution sites use handheld meter and log data

On bottles: date, time, site name, WaterTrax number

At distirubtion sites: take 1 - Caro bacterial bottle

Bottle pickup from RDNO; on bottles date and time

drop off at RDNO

2 amber bottles

NO AIR GAP

Caro bottle preserved with nitric acid (HNO3)

At distribution sites use handheld meter and log data

Distribution sites every week

Bacterial Bottles

Silver Star - Distribution

Bottle Drop Off

At RDNO-GVW

Monday Tuesday, Wednesday or Thursday

Microbiolocal Samples:

· must be at the Caro lab within 24 hours or they cannot be processed

· ice packs in coolers to keep samples at 4 degrees C

· samples cannot be frozen

Sampling Schedule: Silver Star Revision Date: December 19, 2016

Silver Star

Sample Sites WaterTrax ID# Samples bottles

Vance/Paradise Raw 2EACD Seasonal

250 mL - UVT (Weekly)

- Manganese

- Iron

- Colour

Paradise Raw

*When in use9BAE Weekly

250 mL Caro bacterial

250 mL - UV-Transmissivity

Well #2 9BCAMarch, June,

September, December

250 mL - Caro bottle preserved with

nitric acid (HNO3) for Selenium

Mid-T Raw 329AF Weekly250 mL Caro bacterial

250 mL - UV-Transmissivity

Silver Star - Source Sampling

Sampling Schedule: Silver Star Revision Date: December 19, 2016

Silver Star

Jan 2 - 6 Distribution July 3 -7 Distribution

Jan 9 - 13 Distribution July 10 - 14 Distribution; Creekside Condo's @ service

Jan 16-20 Distribution; Giardia July 17 - 21 Distribution

Jan 23 - 27 Distribution: Annual July 24 - 28 Distribution

Jan 30 - Feb 3 Distribution July 31 - Aug 4 Distribution

Feb 6 - 10 Distribution Aug 7 - 11 Distribution

Feb 13 - 17 Distribution Aug 14 - 18 Distribution

Feb 20 - 24 Distribution; Giardia Aug 21 - 25 Distribution

Feb 27 - Mar 3 Distribution Aug 28 - Sept 1 Distribution

Mar 6 - 10 Distribution Sep 4 - 8 Distribution

Mar 13 - 17 Distribution, THM, Selenium on Well #2 Sep 11 - 15 Distribution, THM, Selenium on Well #2

Mar 20 - 24 Distribution; Giardia Sep 18 - 22 Distribution

Mar 27 - 31 Distribution Sept 25 - 29 Distribution

Apr 3 - 7 Distribution: Giardia Oct 2 - 6 Distribution

April 10 - 14 Distribution Oct 9 - 13 Distribution

Apr 17 - 21 Distribution Oct 16 - 20 Distribution

Apr 24 - 28 Distribution Oct 23 - 27 Distribution

May 1 - 5 Distribution Oct 30 - Nov 3 Distribution

May 8 -12 Distribution Nov 6 - 10 Distribution

May 15 - 19 Distribution Nov 13 - 17 Distribution

May 22 - 26 Distribution, Comprehensive Well #5 & #12 Nov 20 -24 Distribution

May 29 - Jun 2 Distribution Nov 27 - Dec 1 Distribution; Creekside Condo's @ service

Jun 5- 9 Distribution Dec 4 - 8 Distribution

Jun 12 - 16 Distribution, THM, Selenium on Well #2 Dec 11 - 15 Distribution, THM, Selenium on Well #2

Jun 19 - 23 Distribution Dec 18 -22 Distribution

Jun 26 - 30 Distribution Dec 25 - 29 Distribution

THM's: Grandview, Firehall, Mid-Tee Control

Silver Star Sampling 2017

* NOTE: Raw water sampling at Paradise when on - usually in winter

3rd or 4th week in January: Annual Analysis on Well #1, Well #10, Well #12, Vance Reservoir and Paradise Reservoir

Sampling Schedule: Silver StarRevision Date: December 15, 2014

Completed by: CK


APPENDIX D

2017 Comprehensive Summary of Raw Water Sources

Surface Water Reservoirs

INORGANIC

Maximum Acceptable

Concentration (MAC)

Aesthetic Objective (AO)

Location Well #1 Well #2 Well #3 Well #5 Well #5 Well #12Paradise

Reservoir

Vance

Reservoir

Year Tested 2017 2017 2017 2017 2017 2017 2017 2017

Date Tested 1-Feb 1-Feb 1-Feb 1-Feb 23-May 23-May 6-Feb 6-Feb

Aluminum (total) <0.005 0.008 <0.005 <0.005 <0.0050 0.15 0.006 <0.005

Antimony (total) 0.0008 <0.0001 <0.0001 <0.0001 0 0 <0.0001 <0.0001 <0.006

Arsenic (total) <0.0005 <0.0005 <0.0005 <0.0005 <0.00050 0 <0.0005 <0.0005 <0.025

Barium (total) 0.016 0.0280 0.0270 0.0350 0.0420 0.0511 0.019 0.021 <1

Boron (total) <0.004 <0.004 <0.004 <0.004 0.010 0.007 0.013 0.017 <1

Cadmium (total) 0.00002 0 0 0.0001 0.0002 0.0001 0.00004 0.00049 0.005

Calcium (total) 52.2 50.9 81.1 135 177 32.8 36.7 29.7

Chloride 0.2 0.56 12.20 69.5 179.0 7.38 0.16 0.2 <250

Chromium (total) <0.0005 <0.0005 0 <0.0005 <0.00050 0 0.001 0.0006 <0.05

Copper (total) 0.0397 0 0 0 0 0.0059 0.003 0.0036 <1.0

Cyanide (total) <0.0200 <0.0200 <0.0200 <0.0200 <0.0020 <0.0020 <0.0050 <0.0050 <0.2

Fluoride <0.10 <0.10 <0.10 <0.10 <0.10 <0.10 <0.10 <0.10 <1.5

Iron (total) <0.01 <0.01 0.13 0.11 0.26 1.45 0.11 0.03 <0.30

Lead (total) 0.0007 <0.0001 <0.0001 <0.0001 <0.0001 0.0085 0.0002 0.0002 <0.01

Magnesium (total) 2.98 6.3 10.70 10.1 13.6 15.1 6.17 3.34 N/A

Manganese (total) 0.0079 <0.0002 0.0663 0.103 0.147 0.2850 0.004 0.0286 <0.05

Mercury (total) <0.00002 <0.00002 <0.00002 <0.00002 <0.00002 <0.00002 <0.00002 <0.00002 <0.001

Molybdenum (total) 0.0004 0.0048 0.0013 0.001 0.001 0.002 0.001 0.0004

Nitrate (as N) 0.083 0.017 <0.010 0 0 0.016 0.069 0.068 <10

Nitrite (as N) <0.010 <0.010 <0.010 <0.010 <0.010 <0.010 <0.010 <0.010 <1

Potassium (total) 1.2 2.56 1.24 5.80 7.14 3.17 0.4 0.5

Selenium (total) 0.0023 0.0108 <0.0005 0 <0.00050 <0.00050 0.0018 0.0016 <0.01

Sodium (total) 1.32 2 6.61 20.4 34.9 8.30 0.74 0.66 <200

Sulphate 27.9 48.2 86.4 109 101 37 16.9 25.6 <500

Uranium (total) 0.00032 0.0021 0.0036 0.0013 0.0015 0.00136 0.00029 0.00013 <0.02

Zinc (total) 0.348 0.008 0.224 0.032 0.029 5.72 <0.004 0.022 <5.0

PHYSICAL

Maximum Acceptable

Concentration (MAC)

Aesthetic Objective (AO)

Alkalinity (bicarbonate, as CaCO3)

119 114 152 229 215 111 105 68

Colour <5 <5 <5 <5 <5 <5 <5 <5 <15 TCU

Conductivity 279 308 499 833 1080 297 235 186

Hardness (total, as CaCO3) 143 153 247 380 498 144 117 87.8 see note

pH 7.69 7.92 7.85 7.79 7.60 7.97 7.89 7.69 6.5 - 8.5

Total dissolved solids / TDS 159 180 291 490 643 172 125 102 <500

Turbidity 0.16 <0.10 0.6 1.1 2.7 23.6 0.25 0.4 <1 NTU <5 NTU

Silver Star water is 50% well water and 50% surface water during the ski season.

At other times the Silver Star Utility is 100% well water. The well water is a combination of the wells noted above.

Notes: No current Guideline ; Reference Health CanadaHardness - no guideline - "Hardness Levels between 80 and 100 mg/L as CaCo3 are considered acceptable; levels greater than 200 are considered poor but can be tolerated; those in excess of 500 are normally considered unacceptable.Turbidity - 1 NTU when disinfection required; <5 NTU aesthetic clarity"<" = less than detection limit shown">" = greater than upper range limit shown"«" = less than number shown (Detected)"»" = greater than number shown (Detected)* Criteria Exceeded

no current guideline

Silver Star Water Utility Comprehensive Summary

Guidelines for Canadian Drinking

Water Quality






Results (mg/L unless noted)

Wells

Results (mg/L unless noted)


APPENDIX E

2017 Silver Star Water Distribution Microbial Results

2017 Silver Star Source Microbial Results

Silver Star Water System

January 1, 2017 to December 31, 2017

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co

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rms (

co

un

ts)

(co

un

ts/1

00m

l)

Esch

eri

ch

ia c

oli

/ E

. co

li

(co

un

ts)

(CF

U/1

00m

l)

To

tal

co

lifo

rms (

co

un

ts)

(co

un

ts/1

00m

l)

Esch

eri

ch

ia c

oli

/ E

. co

li

(co

un

ts)

(CF

U/1

00m

l)

To

tal

co

lifo

rms (

co

un

ts)

(co

un

ts/1

00m

l)

Esch

eri

ch

ia c

oli

/ E

. co

li

(co

un

ts)

(CF

U/1

00m

l)

To

tal

Co

lifo

rms (

co

un

ts)

(co

un

ts/1

00m

l)

2-Jan-17 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1

9-Jan-17 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1

16-Jan-17 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1

23-Jan-17 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1

30-Jan-17 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1

6-Feb-17 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1

14-Feb-17 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1

20-Feb-17 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1

27-Feb-17 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1

6-Mar-17 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1

13-Mar-17 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1

20-Mar-17 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1

27-Mar-17 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1

3-Apr-17 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1

10-Apr-17 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1

18-Apr-17 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1

24-Apr-17 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1

1-May-17 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1

8-May-17 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1

15-May-17 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1

23-May-17 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1

29-May-17 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1

5-Jun-17 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1

12-Jun-17 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1

19-Jun-17 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1

26-Jun-17 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1

4-Jul-17 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1

10-Jul-17 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1

17-Jul-17 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1

24-Jul-17 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1

31-Jul-17 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1

7-Aug-17 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1

14-Aug-17 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1

21-Aug-17 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1

28-Aug-17 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1

4-Sep-17 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1

11-Sep-17 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1

18-Sep-17 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1

25-Sep-17 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1

2-Oct-17 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1

10-Oct-17 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1

16-Oct-17 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1

23-Oct-17 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1

30-Oct-17 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1

6-Nov-17 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1

15-Nov-17 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1

20-Nov-17 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1

27-Nov-17 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1

11-Dec-17 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1

18-Dec-17 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1

20-Dec-17 < 1 < 1

27-Dec-17 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1

Minimum < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1

Maximum < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1 < 1

Count 50 50 50 50 50 50 51 51 52 52

Distribution

Mid T

Treated SS "a" Maintenance Shop The Grandview The Pinnacles Firehall

Silver Star Water System

Source Water

January 1, 2017 to December 31, 2017

Es

ch

eri

ch

ia c

oli / E

. c

oli (

co

un

ts)

(CF

U/1

00

ml)

To

tal C

olifo

rms

(c

ou

nts

)

(co

un

ts/1

00

ml)

Es

ch

eri

ch

ia c

oli / E

. c

oli (

co

un

ts)

(CF

U/1

00

ml)

To

tal c

olifo

rms

(c

ou

nts

)

(co

un

ts/1

00

ml)

2-Jan-17 < 1 < 1 < 1 > 7

9-Jan-17 < 1 < 1 < 1 < 1

16-Jan-17 < 1 < 1 < 1 1

23-Jan-17 < 1 35 < 1 > 90

30-Jan-17 < 1 28 < 1 > 14

1-Feb-17

6-Feb-17 < 1 64 < 1 120

14-Feb-17 < 1 > 24 < 1 120

20-Feb-17 < 1 14 < 1 43

27-Feb-17 < 1 < 1 < 1 < 1

6-Mar-17 < 1 15 < 1 36

13-Mar-17 < 1 7 < 1 14

20-Mar-17 < 1 > 22

27-Mar-17 < 1 < 1

3-Apr-17 < 1 < 1 < 1 < 1

10-Apr-17 < 1 < 1

18-Apr-17 < 1 < 1 < 1 < 1

24-Apr-17 < 1 < 1

1-May-17 < 1 < 1

15-May-17 < 1 < 1

23-May-17 < 1 < 1

5-Jun-17 < 1 < 1

19-Jun-17 < 1 < 1

26-Jun-17 < 1 < 1

4-Jul-17 < 1 < 1

10-Jul-17 < 1 < 1

24-Jul-17 < 1 < 1

31-Jul-17 < 1 < 1

7-Aug-17 < 1 < 1

4-Sep-17 < 1 < 1

11-Sep-17 < 1 < 1

18-Sep-17 < 1 < 1

2-Oct-17 < 1 < 1

10-Oct-17 < 1 < 1

16-Oct-17 < 1 < 1 < 1 2

23-Oct-17 < 1 < 1

6-Nov-17 < 1 3 < 1 1

15-Nov-17 < 1 < 1

20-Nov-17 < 1 < 1 < 1 1

27-Nov-17 < 1 < 1

11-Dec-17 < 1 < 1 < 1 1

18-Dec-17 < 1 < 1 < 1 1

27-Dec-17 < 1 < 1

Minimum < 1 < 1 < 1 < 1

Maximum < 1 64 < 1 120

Count 33 33 27 27

Sources

Vance and Paradise Raw Water Line Mid T Raw


APPENDIX F

2017 Silver Star Water Utility Turbidity Results

Silver Star Water - 2017 Raw Water SCADA Turbidity, Daily Average

# or DaysMid-T Blended Water -

Raw

Vance and Paradise -

Raw

January

February

March

April

May

June

July

August

September

October 31 0.04 0.98

November 29 0.2 0.41

December 30 0.21 0.45

Online raw water turbidity results are provided from October to December 2017. The turbidity analyzers

were connected to SCADA in October, therefore there was no SCADA data from January to

September.

Silver Star Water - 2017 Raw Water Turbidity Grab Samples

Mid T Raw Vance and Paradise Raw

Water Line Turbidity

(NTU)

Turbidity

(NTU)

2-Jan-17 0.26 0.33

9-Jan-17 0.34 0.42

16-Jan-17 0.35 0.38

23-Jan-17 0.29 0.28

30-Jan-17 0.29 0.27

6-Feb-17 0.24 0.27

14-Feb-17 0.23 0.33

20-Feb-17 0.26 0.36

27-Feb-17 0.23 0.30

6-Mar-17 0.23 0.31

13-Mar-17 0.35 0.37

20-Mar-17 0.21

27-Mar-17 0.22

3-Apr-17 0.25 0.21

10-Apr-17 0.22

18-Apr-17 0.23 0.19

24-Apr-17 0.32

1-May-17 0.32

15-May-17 0.14

23-May-17 0.26

5-Jun-17 0.18

19-Jun-17 0.18

26-Jun-17 0.38

4-Jul-17 0.18

10-Jul-17 0.21

24-Jul-17 0.14

31-Jul-17 0.21

7-Aug-17 0.16

4-Sep-17 0.16

11-Sep-17 0.21

18-Sep-17 0.24

2-Oct-17 0.18

10-Oct-17 0.19

16-Oct-17 0.69 0.77

23-Oct-17 0.14

6-Nov-17 0.12 2.71

13-Nov-17 0.41

15-Nov-17 0.27

20-Nov-17 0.38 0.37

27-Nov-17 0.44

4-Dec-17 0.33 0.31

11-Dec-17 0.26 0.42

18-Dec-17 0.19 0.44

27-Dec-17 0.41

Average 0.24 0.42

Minimum 0.12 0.19

Maximum 0.69 2.71

Count 34 29

Operator grab samples for raw water turbidity are provided from January to December. Turbidity

samples for Vance and Paradise raw water line are generally only measures when the surface water

sources (Vance and Paradise reservoirs) are in use during the peak demand times corresponding with

the winter ski season.


APPENDIX G

2017 Silver Star Manganese Iron Results

Silver Star Raw Water – Manganese and Iron Results

On most dates in 2017 the raw turbidity at the Mid T WTP was less than 1 NTU. However, the turbidity of the raw water from the Vance

Reservoir was > 1 NTU at start up in October through December. This turbidity was reduced by blending with the groundwater sources

at the Mid T WTP. With this blending the turbidly peaked at about 0.69 NTU ( Mid T WTP SS “a”). The water delivered into the

distribution system was maintained at < 1 NTU. At the same time the water from the Vance Reservoir also measured high in colour.

Upon further testing it was found that the colour and the turbidity was being generated from manganese in the Vance Reservoir and

iron from the transmission main to the WTP. To deal with this the transmission main between Vance and Paradise is flushed before

the ski season each year until colour and manganese levels are within acceptable aesthetic levels.

Water System Sampling Point Collection

Date

Iron (Total) mg/L

RDNO Lab

Manganese (total) mg/L

RDNO Lab

Colour (Apparent)

ACU RDNO Lab

Silver Star Water System Vance and Paradise Raw Water Line 01/23/2017 0.01 0.011












Silver Star Water System Mid T Treated SS "c" 11/06/2017 0.01 0.014 0





APPENDIX H

2017 Silver Star Chlorine Results

Chlorine Monitoring

Silver Star Water Utility monitors the water quality at four (4) sites within the distribution and two (2) sites at the

Mid T Water Treatment Plant. The table and graph below provides the chlorine results at each site. The average

chlorine residual within the Silver Star distribution was 1.52 mg/L. The Mid T Control site had a name change in

September to Mid T Treated SS “a”, this sample is the blended well and surface water after treatment and time

in the first reservoir. Mid T Treated SS “c” is represents the first customer as the water leaves the reservoir and enters the distribution.

Distribution

Firehall Mid T

Control

The

Pinnacles

The

Grandview

Maintenance

Shop

Mid T Treated SS

"c"

Mid T Treated SS

"a"

Fre

e C

hlo

rin

e

(mg

/L)

To

tal C

hlo

rin

e

(mg

/L)

Fre

e C

hlo

rin

e

(mg

/L)

To

tal C

hlo

rin

e

(mg

/L)

Fre

e C

hlo

rin

e

(mg

/L)

To

tal C

hlo

rin

e

(mg

/L)

Fre

e C

hlo

rin

e

(mg

/L)

To

tal C

hlo

rin

e

(mg

/L)

Fre

e C

hlo

rin

e

(mg

/L)

To

tal C

hlo

rin

e

(mg

/L)

Fre

e C

hlo

rin

e

(mg

/L)

To

tal C

hlo

rin

e

(mg

/L)

Fre

e C

hlo

rin

e

(mg

/L)

To

tal C

hlo

rin

e

(mg

/L)

2-Jan-17 1.71 1.85 1.62 1.74 1.68 1.7 1.59 1.71 1.36 1.47

9-Jan-17 1.63 1.74 1.72 1.91 1.67 1.73 1.56 1.69 1.27 1.41

16-Jan-17 1.55 1.67 1.74 1.89 1.60 1.71 1.47 1.58 1.21 1.37

23-Jan-17 1.53 1.66 1.81 1.99 1.66 1.79 1.44 1.56 1.44 1.56

30-Jan-17 1.54 1.63 1.91 2.11 1.63 1.74 1.51 1.62 1.33 1.41

6-Feb-17 1.63 1.71 1.72 1.89 1.66 1.78 1.54 1.65 1.31 1.37

14-Feb-17 1.01 1.17 1.77 2.16 1.62 1.74 1.66 1.75 1.35 1.46

20-Feb-17 1.43 1.57 1.75 1.81 1.54 1.84 1.57 1.68 1.11 1.29

27-Feb-17 1.32 1.52 1.78 1.88 1.67 1.89 1.60 1.69 1.10 1.37

6-Mar-17 1.27 1.58 1.75 1.91 1.62 1.94 1.48 1.84 0.95 1.24

13-Mar-17 1.27 1.60 1.99 2.06 1.67 2.02 1.26 1.58 1.26 1.48

20-Mar-17 1.37 1.54 1.80 1.87 1.71 1.92 1.63 1.80 1.30 1.45

27-Mar-17 1.74 1.83 1.71 1.82 1.89 1.98 1.72 1.86 1.59 1.67

3-Apr-17 1.58 1.67 1.61 1.72 1.56 1.64 1.51 1.58 1.39 1.48

10-Apr-17 1.52 1.61 1.61 1.74 1.58 1.69 1.49 1.57 1.21 1.29

18-Apr-17 1.50 1.62 1.67 1.82 1.59 1.70 1.30 1.44 1.03 1.15

24-Apr-17 1.61 1.68 1.71 1.84 1.57 1.66 1.36 1.45 1.09 1.17

1-May-17 1.54 1.63 1.68 1.77 1.49 1.6 1.36 1.54 1.14 1.22

8-May-17 1.61 1.72 1.73 1.81 1.66 1.75 1.30 1.46 0.77 0.94

15-May-17 1.48 1.62 1.87 1.95 1.54 1.69 1.37 1.50 0.79 1.01

23-May-17 1.61 1.69 1.68 1.74 1.57 1.68 1.44 1.59 0.97 1.16

29-May-17 1.56 1.63 1.74 1.88 1.56 1.71 1.20 1.31 1.12 1.21

5-Jun-17 1.59 1.68 1.81 2.04 1.61 1.68 1.43 1.55 0.94 1.06

12-Jun-17 1.63 1.71 1.71 1.86 1.71 1.84 1.52 1.66 1.01 1.08

19-Jun-17 1.73 1.84 1.79 1.91 1.64 1.73 1.57 1.69 1.21 1.34

26-Jun-17 1.06 1.58 1.78 1.89 1.68 1.81 1.22 1.40

4-Jul-17 1.60 1.71 1.82 1.96 1.62 1.7 1.47 1.56 1.12 1.23

10-Jul-17 1.37 1.50 1.71 1.88 1.42 1.57 1.23 1.41 1.11 1.17

17-Jul-17 1.53 1.59 1.79 1.88 1.46 1.53 1.32 1.39 1.03 1.12

24-Jul-17 1.46 1.53 1.67 1.79 1.58 1.65 1.34 1.45 1.14 1.26

31-Jul-17 1.53 1.56 1.78 1.89 1.46 1.55 1.30 1.38 1.22 1.31

7-Aug-17 1.61 1.71 1.79 1.84 1.59 1.68 1.41 1.53 0.96 1.01

14-Aug-17 1.50 1.58 1.92 2.07 1.57 1.68 1.31 1.42 1.21 1.30

21-Aug-17 1.54 1.63 1.74 1.89 1.59 1.64 1.37 1.48 1.55 1.64

28-Aug-17 1.54 1.59 1.71 1.89 1.42 1.51 1.31 1.47 1.26 1.33

Distribution

Firehall Mid T

Control The

Pinnacles The

Grandview Maintenance

Shop

Mid T Treated SS

"c"

Mid T Treated SS

"a"

Fre

e C

hlo

rin

e

(mg

/L)

To

tal C

hlo

rin

e

(mg

/L)

Fre

e C

hlo

rin

e

(mg

/L)

To

tal C

hlo

rin

e

(mg

/L)

Fre

e C

hlo

rin

e

(mg

/L)

To

tal C

hlo

rin

e

(mg

/L)

Fre

e C

hlo

rin

e

(mg

/L)

To

tal C

hlo

rin

e

(mg

/L)

Fre

e C

hlo

rin

e

(mg

/L)

To

tal C

hlo

rin

e

(mg

/L)

Fre

e C

hlo

rin

e

(mg

/L)

To

tal C

hlo

rin

e

(mg

/L)

Fre

e C

hlo

rin

e

(mg

/L)

To

tal C

hlo

rin

e

(mg

/L)

4-Sep-17 1.60 1.67 1.71 1.85 1.56 1.64 1.47 1.58 1.32 1.41

11-Sep-17 1.57 1.63 1.54 1.67 1.49 1.56 1.16 1.24 1.72 1.89

18-Sep-17 1.57 1.64 1.62 1.71 1.37 1.48 1.21 1.32 1.87 2.04

25-Sep-17 1.32 1.46 1.42 1.56 0.96 1.04 1.11 1.17 1.69 1.81

2-Oct-17 1.39 1.48 1.21 1.32 1.16 1.24 1.69 1.82

10-Oct-17 1.49 1.58 1.54 1.61 1.22 1.31 1.14 1.18 2.02 2.20

16-Oct-17 1.48 1.55 1.68 1.71 1.54 1.78 0.93 1.24 0.87 1.05

23-Oct-17 1.72 1.88 1.59 1.81 0.98 1.26 1.67 1.96

30-Oct-17 1.59 1.68 1.77 1.93 1.18 1.27 1.17 1.28 1.86 2.01

6-Nov-17 1.42 1.55 1.59 1.7 1.31 1.44 1.46 1.58 1.82 2.01

13-Nov-17 1.67 1.90 1.64 1.91 1.68 1.84 1.01 1.37 1.57 1.90

15-Nov-17 0.95 1.15 1.64 1.86 1.64 1.73 1.07 1.30 1.68 1.84

20-Nov-17 1.42 1.57 1.70 1.78 1.36 1.44 1.21 1.34 1.64 1.72 1.72 1.86

27-Nov-17 1.58 1.63 1.62 1.68 1.43 1.51 1.31 1.38 1.58 1.64 1.64 1.72

4-Dec-17 1.44 1.52 1.42 1.57 1.36 1.47 1.37 1.48 1.34 1.51 1.93 2.11

11-Dec-17 1.55 1.60 1.54 1.63 1.41 1.48 1.18 1.24 1.55 1.62 1.64 1.77

18-Dec-17 1.43 1.55 1.41 1.50 1.37 1.52 0.97 1.09 1.47 1.53 1.67 1.84

20-Dec-17 1.69

21-Dec-17 1.24 1.34 1.41 1.49 1.09 1.17 1.04 1.13 1.26 1.42 1.86 2.03

27-Dec-17 1.54 1.63 1.59 1.67 1.46 1.58 1.11 1.17 1.71 1.86

Average 1.49 1.61 1.75 1.89 1.59 1.72 1.42 1.54 1.17 1.29 1.50 1.57 1.70 1.87

Minimum 0.95 1.15 1.61 1.72 1.41 1.49 0.96 1.04 0.77 0.94 1.26 1.42 0.87 1.05

Maximum 1.74 1.90 1.99 2.16 1.89 2.02 1.72 1.86 1.59 1.67 1.69 1.72 2.02 2.2

Count 53 53 36 36 53 53 53 53 54 54 7 6 18 18

Note: Mid-T Control name changed to Mid-T Treated SS "a"

0.00

0.50

1.00

1.50

2.00

2.50

2-Jan-17 2-Feb-17 2-Mar-17 2-Apr-17 2-May-17 2-Jun-17 2-Jul-17 2-Aug-17 2-Sep-17 2-Oct-17 2-Nov-17 2-Dec-17

Ch

lori

ne

Res

idu

al m

g/L

Silver Star Water Chlorine Residual

Firehall Mid T Control The Pinnacles The Grandview Maintenance Shop Mid T Treated SS "c" Mid T Treated SS "a"


APPENDIX I

Silver Star Water Trihalomethane Results

Silver Star Distribution – 2017 THM Results

The graph below provides the results of the 2017 THM results. The results show that the THMs

are within standards. THMs are highest in September due to the low water use in the summer

months corresponding to a higher water age and higher temperatures.

0.000

0.020

0.040

0.060

0.080

0.100

0.120

March 13 June 19 September 11 December 11 TTHM 1-4

ug

/L

Silver Star Distribution THM 2017

Firehall Mid-T Grandview GCDW


APPENDIX J

2017 Silver Star Chlorine Contact Time

Silver Star Water Utility Contact Time Calculation

0.25 m Contact Pipe - inside diameter

225 m Contact Pipe - Length

11 m3

Contact Pipe - Total Volume (Vp)

160 USgpm maximum flow rate through contact pipe

10.1 L/s maximum flow rate through contact pipe = Qp

1816 m3

Reservoir volume (all 4 cells full)

454 m3

Reservoir volume (all 4 cells 25% full) = Vr

2000 USgpm maximum flow rate peak operating conditions through reservoir (incl. fire flow)

126.2 L/s maximum flow rate peak operating conditions through reservoir (incl. fire flow) = Qr

18 minutes Theoretical Detention Time in pipe (TDTp) = Vp/Q

60 minutes Theoretical Detention Time in reservoir (TDTr) = Vr/Q

0.3 Reservoir Baffling Factor (poor) = Fsc

36 minutes Contact Time (CT) during peak flow rate = TDTp+Fsc*TDTr

CT calculation for 1st customer - sampling point after the reservoirs (Mid-T Treated SS "c")

Cl2 Residual

mg/L (free)

Cl2

Injection

mg/L

pH raw

water

Raw

Water

temp C

CTa

(achieved)

= (Cl2 * CT)

CTr

(required

for virus)

CTa/CTr

(virus)

CT (Virus)

%

Achieved

Minimum Avg Average Average min-mg/L min-mg/L

Peak Flow, Avg. Temp 0.50 1.26 7.60 9.0 18.1 8.0 2.26 100Peak Flow, Winter Temp 0.50 1.26 7.60 3.0 18.1 12.0 1.51 100Peak Flow, Summer Temp 0.50 1.26 7.60 12.0 18.1 6.0 3.02 100

Notes:

1. Normal residual Cl2 range at 1st customer is 1.26 to 1.69 mg/L.

2. Temperature average is about 9C with lows of near 3C in Winter months, and highs near 12°C in Summer.

3. Peak Flow Rates occur normally in Winter when water temperatures are coldest.

4. From CT Values Table B-2 of US EPA Guidance Manual LT1ESWTR Disinfection Profiling and Benchmarking

virus log inactivation = 4*(Cta/CTr) log

virus percent achieved =100‐(100/(10^(4*CTa/CTr))) log(x)=4*CTa/CTr x=10^(4*CTa/CTr) xvirus = 1.00E+00

Completed by: ZMUpdate (JdeP): August 29, 2018 Date Printed: 10/19/2018, 4:28 PM


APPENDIX K

2017 Silver Star UVT Results

Raw Water UV Treatment

The table below provides manual UVT measurements taken from samples provided to the RDNO

lab and confirm that the UVT remained within the required operating parameters for the UV

reactors.

UV Transmittance

Analyzed at RDNO-GVW Laboratory

Raw Water at Mid-T Water Treatment Plant

UV Transmittance - Filtered (%)

UV Transmittance - Unfiltered (%)

2-Jan-17 97.7 97.5 9-Jan-17 97.8 97.7 16-Jan-17 99.3 98.3 23-Jan-17 97.7 97.2

30-Jan-17 98.4 98.2

6-Feb-17 97.9 97.9 14-Feb-17 97.9 97.7 20-Feb-17 98.8 98.4

27-Feb-17 98.0 97.9

6-Mar-17 98.1 98.1 13-Mar-17 98.2 98.1 20-Mar-17 98.2 97.8

27-Mar-17 99.5 99.4

3-Apr-17 99.2 99.2 10-Apr-17 99.6 99.0 18-Apr-17 99.6 99.9

24-Apr-17 99.3 99.6

1-May-17 99.1 98.6 8-May-17 99.8 99.0 15-May-17 100 99.9 23-May-17 100.3 100.2

29-May-17 99.9 98.5

5-Jun-17 100.5 100.2 12-Jun-17 102.1 101.9 19-Jun-17 100.2 99.9

26-Jun-17 100.0 99.9

4-Jul-17 100.5 100.4 10-Jul-17 100.0 99.9 17-Jul-17 100.6 100.4 24-Jul-17 100.4 100.2

31-Jul-17 100.2 100.1

7-Aug-17 100.0 100.0 14-Aug-17 100 99.9 21-Aug-17 99.9 99.9

28-Aug-17 100 100

UV Transmittance

Analyzed at RDNO-GVW Laboratory

Raw Water at Mid-T Water Treatment Plant

UV Transmittance - Filtered (%)

UV Transmittance - Unfiltered (%)

4-Sep-17 100.3 99.5 11-Sep-17 100.3 99.6 18-Sep-17 99.6 99.7

25-Sep-17 100.4 100.1

2-Oct-17 100 100 10-Oct-17 100.2 100.1 16-Oct-17 100.5 100.2 23-Oct-17 100 100

30-Oct-17 100 100

6-Nov-17 99.8 100 16-Nov-17 100.1 99.5 20-Nov-17 99.0 98.6

27-Nov-17 98.4 98.8

4-Dec-17 98.3 98.2 11-Dec-17 98.1 97.9

18-Dec-17 97.7 96.6

Average 99.4 99.2 Minimum 97.7 96.6 Maximum 102.1 101.9

Count 51 51


APPENDIX L

Silver Star Mid T Site Plan


APPENDIX M

2017 Silver Star Protozoa Results

Silver Star - Giardia and Cryptosporidium

SSW has two surface water reservoirs, Vance and Paradise. These reservoirs are brought online for the peak winter season November to April to

supplement the wells. Monitoring for Cryptosporidium and Giardia in source waters will provide valuable information for a risk- based assessment of

treatment requirements.1 In the winter season of 2016-2017 during surface water sources use, a monthly sampling program for protozoa was

implemented for the blended raw surface water sources to assess background Cryptosporidium and Giardia. Over the five sample dates, there was

one (1) viable Cryptosporidium found. The Mid T treatment facility provides UV disinfection which effectively inactivates Cryptosporidium and Giardia

and with the addition of chlorine provides a 3 log inactivation for these protozoa. Results of the protozoa sampling program can be in the table below.

The raw water source meet the Filtration Exclusion criteria just before treatment, with turbidity under 1 NTU, microbial under 20 CFU/ml of E.coli (with

no sample measuring positive for E.coli), under 100 CFU/ml of Total Coliform, and extremely low protozoa levels.

At the beginning of the 2013-2014 ski season, the turbidity of raw water from the surface water reservoirs measured above 2 NTU. This was

determined to be a result of aged water in the transmission main from the reservoirs, and to deal with this issue a flushing port was installed at the

Mid T WTP in 2014. Current protocol now requires the transmission main to be flushed prior to bringing these surface water sources online. In 2017

the average turbidity was 0.42 NTU.

Date Site Type of Sample

Volume Filtered

(L)

Field Turbidity

(NTU)

Field pH

Field Temperature

(oC)

# Cycts Giardia Dead

# Cycts Giardia Viable

# oocysts Crypto. Dead

# oocysts Crypto. Viable

Results Giardia cysts / 100L

Results Crypto.

oocysts / 100L

Caro Total

Coliform CFU / 100mL

Caro E.coli CFU /

100 mL

Aerobic Spores CFU/L

19-Dec-16 Vance / Paradise

Raw 150 0.67 7.7 7.8 0 0 0 0 0.0 0.0 >130 1 -

23-Jan-17 Vance / Paradise

Raw 100 0.215 7.8 3.9 0 0 0 0 0.0 0.0 >90 <1 -

20-Feb-17 Vance / Paradise

Raw 100 0.29 7.7 4.8 0 0 0 0 0.0 0.0 43 <1 -

20-Mar-17 Vance / Paradise

Raw 101 0.33 7.7 7.2 0 0 0 0 0.0 0.0 >22 <1 -

3-Apr-17 Vance / Paradise

Raw 100 0.26 7.6 4.0 0 0 0 1 0.0 1.0 <1 <1 -

1 Guidelines for Canadian Drinking Water Quality, Summary Table ( February, 2017)


APPENDIX N

2017 Silver Star Consumption Data

MonthWell #1

(ML)

Well #2

(ML)

Well #5

(ML)

Paradise

and Vance

(ML)

Total Volume

(ML)

January 0.636 4.616 1.771 8.713 15.736

February 1.671 3.547 1.331 7.251 13.800

March 22.076 3.510 1.231 7.612 34.429

April 1.515 2.180 0.978 3.871 8.544

May 0.000 3.794 2.256 0.607 6.657

June 2.983 4.274 0.062 0 7.319

July 4.412 5.632 0 0 10.044

August 4.281 5.131 0 0 9.412

September 2.606 3.715 0 0 6.321

October 3.929 2.948 0 0 6.877

November 2.370 2.955 0 1.969 7.294

December 2.604 4.315 0 7.841 14.760

Total 49.083 46.617 7.629 37.864 141.193

Total Winter Consumption

(December 1 to March 31)26.987 15.988 4.333 31.417 78.725

Average Monthly Winter

Consumption

(December 1 to March 31)

6.747 3.997 1.083 7.854 19.681

Total Summer Consumption

(April 1 to November 30)22.096 30.629 3.296 6.447 62.468

Average Monthly Summer

Consumption

(April 1 to November 30)

2.762 3.829 0.412 0.806 7.809

Silver Star Water Utility - 2017 Monthly Volumes at Each Source

The table below provides the average monthly water consumption and the total water

consumption from January to December 2017.


APPENDIX O

Silver Star Incident Tracking

2017 Incidents at Silver Star Water

Incident

#

Date

Reported

Root Cause

(equip?)

Trigger Event Action Items Required or Completed Long Term Action Items

17-024 17-Aug-17 Lightning strike Surge suppressor equipment at Vance pump

station was damaged, requiring replacement.

VFDs were also damaged, requiring replacement.

TK was called in because they had previously

replaced the surge suppressor unit. TK assessed

that 2 of 3 VFDs were damaged and had to be

replaced. At a later date the third VFD did not

function, having also been damaged in this event,

requiring replacement.

The surge suppressor unit was replaced in

August by TK. All 3 VFDs have been replaced

(Nov 21).

17-025 20-Dec-17 CL2 fail WM called to report that the chlorinator had shut

off, interrupting chlorine injection on December

19, and untreated water flowed to the Mid T

Reservoir. SCADA trend shows concentration of

chlorine at Cell#4 declined to 0.5 mg/L. Alarm

failed to notify Operator.

Alarm was re-set, chlorinator re-started. One (1)

L of chlorine was added manually to each cell of

the Mid T reservoir to raise chlorine residual.

Water sample results for distribution system after

the event show bacteriology <1 for coliforms , and

chlorine residuals normal. Calculations show

chlorine contact time in Mid T reservoir at

concentration of 0.5 mg/L is sufficient treatment

for bacteria and virus.

SCADA programming was completed to shut off

the flow of water at the WTP when chlorine

dosing fails.

Documents

ilver Star Water Utility 2011-2012 Annual ReportManager, Small Utilities is responsible for the operation and management of this system, with oversight provided by the General Manager,