EDMONTON WATERWORKS

ANNUAL REPORT TO ALBERTA ENVIRONMENT AND WATER Approval Number 638-03-00

2020

2019 ANNUAL REPORT

TABLE OF CONTENTS PAGE

1.0 Overview

1.1 Overview ...... 1 1.2 Process Schematic – Rossdale (Plants 1 & 2) ...... 5 1.3 Process Schematic – E. L. Smith (Plant 4) ...... 6 1.4 Summary of Violations and Notifications ...... 7 1.5 Alberta Environmental Operator Certifications ...... 10 1.6 Demand Production Statistics (Estimated highlift flow) ...... 16 1.7 Energy Consumption and Usage ...... 17

2.0 Raw Pumpage, Treated Pumpage and Distribution System

2.1 Storage Capacities of Reservoirs ...... 18 2.2 Reservoir Pressure Operating Ranges ...... 19 2.3 Fire Hall and other City Pressure Limits ...... 20 2.4 Regional Customers ...... 21 2.5 Pumping Facilities within the City of Edmonton Distribution System ...... 22 2.6 Production Summary ...... 23 2.7 Raw Water Intake (ML) ...... 24 2.8 Treated Water Production (ML) ...... 25

3.0 Water Quality

3.1 Raw Water Quality – North Saskatchewan River ...... 26 3.2 Treated Water Quality Entering the Distribution System ...... 27 3.3 Rossdale Filters 1 - 9 Particle Counts (no./mL,>2um) ...... 28 3.4 E.L. Smith Filters 1 - 9 Particle Counts (no./mL,>2um) ...... 39 3.5 E.L. Smith Filters 10 -18 Particle Counts (no./mL,>2um) ...... 30 3.6 Rossdale Filters 1 – 9 Turbidity (NTU) ...... 31 3.7 E.L. Smith Filters 1 – 9 Turbidity (NTU) ...... 32 3.8 E.L. Smith Filters 10 – 18 Turbidity (NTU) ...... 33 3.9 Combined Filter Effluent Water Quality ...... 34 3.10 Rossdale UV Disinfection – Filters 1 - 3 ...... 35 3.11 Rossdale UV Disinfection – Filters 4 - 6 ...... 36 3.12 Rossdale UV Disinfection – Filters 7 - 9 ...... 37 3.13 E. L. Smith UV Disinfection – UV Reactors 1 - 4 ...... 38 3.14 Log Removal ...... 39

4.0 Chemicals

4.1 Liquid Alum Chemical Consumption ...... 40 4.2 Primary Polymer (Magnafloc LT 27AG) Chemical Consumption ...... 41 4.3 Carbon Chemical Consumption ...... 42 4.4 Sodium Hypochlorite Chemical Consumptin ...... 43

4.5 Filter Polymer (Magnafloc LT 7996) Chemical Consumption ...... 44 4.6 Aqua Ammonia Chemical Consumption ...... 45 4.7 Caustic Soda Chemical Consumption ...... 46 4.8 Fluoride Chemical Consumption ...... 47 4.9 Sodium Bisulfite Chemical Consumption ...... 48

5.0 Waste Streams

5.1 Waste Stream Volumes (ML) ...... 49 5.2 Rossdale Clarifier Blowdown, Clarifier Washdown and Backwash Water Waste Stream Data ...... 50 5.3 Rossdale Waste Stream Data ...... 51 5.4 E.L. Smith Clarifier Blowdown, Clarifier Washdown and Backwash Water Waste Stream Data ...... 52 5.5 E.L. Smith Waste Stream Data ...... 53

6.0 Reservoir Chlorine Residual Part 1 ...... 54

6.1 Reservoir Chlorine Residual Part 2 ...... 55

7.0 Quality Assurance

7.1 Water Quality Objectives ...... 56 7.2 Summary of Major Chemicals, Microbiological and Physical Parameters ...... 57 7.3 Summary of Laboratory Analysis ...... 58 7.4 Bacteriological Data: Water Treatment Plants ...... 59 7.5 Bacteriological Data: Distribution System ...... 65 7.6 Giardia and Cryptosporidium ...... 70 7.7 Treated Water Entering the Distribution System ...... 73 7.8 Rossdale and E.L. Smith combined Filter Effluent Water Analysis ...... 82 7.9.a Routine Distribution System ...... 84 7.9.b Complaint Investigations ...... 89 7.10 Castledowns, Clareview and Kaskitayo Reservoir...... 92 7.11 Londonderry, Millwoods and North Jasper Place Reservoir ...... 95 7.12 Ormsby, Papaschase 1 and Papaschase 2 Reservoir ...... 98 7.13 Rosslyn 1, Rosslyn 2 and Thorncliff Reservoir ...... 101 7.14 Disinfection Byproducts ...... 104 7.15 Raw River Water ...... 105 7.16 Statistics on Water Quality Complaint Samples ...... 113 7.17 Lead Management Program ...... 114 7.18 Lead Service Line Program – by Home Sample ...... 116 7.19 Reportable Detection Limits ...... 117 7.20 Explanation of Notations Used ...... 120

1.1 Overview

Through 2020, EPCOR Water Services Inc. (EWSI) continued to satisfy all water demand requirements while meeting our strict water quality criteria. Total demand in 2020 was similar to 2019 and lower than 2018. With COVID-19 and the associated restrictions in 2020, EWSI saw a noticeable decrease in commercial consumption with only a small corresponding increase in residential demands.

High raw water color in January and early February, at times in excess of 10 TCU, prevented Rossdale and E.L. Smith WTPs from operating in Direct Filtration (DF) for a number of days. When color decreased in early February, both WTPs converted to DF and remained in DF until April 8, when they were converted to conventional treatment in advance of spring runoff.

In mid-April, Strawberry, Modeste and other creeks upstream began to show signs of freshet and carbon was started at both WTPs on April 12. Some odours were detected and carbon was fed for 16 days. Although color peaked at 118 TCU, spring runoff did not result in any significant taste and odour concerns in the treated water.

Heavy rainfall events in May and July led to high raw water color (>80 TCU) and made it necessary to feed carbon on four separate occasions, approximately 15 days total. Color peaked at 173 TCU and turbidity at 1,900 NTU in late May.

Edmonton WTPs continued to focus on optimizing chemical dosing and minimizing release of water treatment plant solid residuals to the NSR. Zeta Potential is being monitored at the EL Smith WTP during Direct Filtration to help filter polymer dose optimization and to increase plant performance during DF operation. A similar analyzer has been purchased for Rossdale WTP.

With dry weather, raw water quality improved significantly in late August. With raw water color averaging less than 5 TCU, E.L. Smith WTP converted to DF on September 22. Rossdale converted to DF on October 19, later than E.L. Smith to accommodate scheduled maintenance and capital work.

In 2020, E.L. Smith WTP operated 178 days in DF and Rossdale 158 days, reducing solids discharged to the NSR compared to conventional operation. In- stream sampling and monitoring of WTPs clarifier waste stream discharges to NSR continued in 2020 to further understand the impacts of residuals discharge on the river environment. EWSI will provide AEP with a summary of activities related to the Residuals Management Program in the form of an annual progress report by April 30, 2021.

A summary of incidents within the Edmonton waterworks system is provided in Section 1.4. Eleven were reported to Environment and Parks as per our Operations Program reporting protocol, either as a Notification or as a Contravention of the Approval. One incident (without AEP reference number) was reported to our Drainage Operations as per the Drainage bylaw. EWSI continues to improve the integrated safety and environmental management system in accordance with the ISO 14001:2015 and 45001:2018 standard.

EWSI continued to upgrade the water treatment plants and the reservoir assets. Total expenditures in 2020 were approximately $34.7 M. Some of the major projects are as follows:

 E.L. Smith Solar Farm – design is in progress and the regulatory approvals are all in place for a 12MW solar farm and battery energy storage system installed adjacent to the E.L. Smith WTP with an in-service date of Q2 2022.  Flood Protection – design of the flood protection project is underway and procurement of tiger dams was completed in 2020. Some Provincial and Federal grant funding has been secured for the project.  Phosphoric Injection for Lead Control – new phosphoric acid injection systems are in design, one for E.L. Smith WTP and one for Rossdale WTP, to allow EPCOR to meet the new Health Canada Guidelines for lead in drinking water. Construction of both systems is to start in 2021.  E.L. Smith – Design was completed for the structural rehabilitation of Stage 1 filters with construction starting with Filter 3, ongoing fluoride system upgrades were completed and fluoride addition resumed in November 2020, and the construction of High Lift Pumphouse surge protection continued.  Rossdale - Structural rehabilitation of Stilling Basin 1 and Clarifier 1-1 was completed and construction for the SBS Room Upgrade project is in progress with a planned completion date of May 2021.  Reservoirs – Discovery Park Reservoir and the Blackmud Booster Station were purchased in 2020 to support the City of Edmonton annexation of lands in SW Edmonton.

In 2020, Water Distribution and Transmission repaired 275 water main breaks on the distribution system in Edmonton, with the majority of main breaks occurring on cast iron pipes. This number also represents the 5 year annual average of main breaks going back to 2015. EPCOR generally experiences a higher volume of breaks in the first quarter of the year attributed to deeper frost penetration as we incurred 111 in this time frame. The overall reliability of the water distribution system can be attributed to the water main replacement programs as well as the use of more reliable pipe materials in both replacement and new water main construction.

In 2020, the Uni-Directional Flushing program completed flushing and valve exercising in about 18.5% of Edmonton (1,319 runs).This program is now a six- year cycle with area prioritization emphasis placed on water quality parameters, percentage of Cast Iron Mains, and the relative success of the previous flush. Additional consideration was given to flushing areas with less than normal occupancy due to COVID-19 impacts. There were 42 additional areas that were flushed including 3 zones in the downtown Edmonton core.

Additional 2020 activities included continued transmission main inspections and repairs on the major feed to the Capital Region Northeast Water Service Commission (CRNWSC) and also the transmission main leaving the E.L Smith Water Treatment plant. Also, the removal of 240 lead service lines to customers during renewal and high priority removal of lead lines to residential customers.

EWSI continues to provide water and wastewater services and expertise to numerous communities in Alberta, British Columbia, Saskatchewan, as well as industrial sites in Fort McMurray.

As we move into 2020, we will continue to focus our efforts on the production of and distribution of high quality water, customer satisfaction, protection of the environment, workplace safety and cost effectiveness. We will continue to ensure our customers receive best value for the services we provide them. More detail on our progress towards meeting our EnviroVista Stewardship commitment will be included in our annual EnviroVista report, which will uploaded to epcor.com by June 30, 2021.

(End of Section) 1.2 Process Schematic - Rossdale (Plants 1 & 2)

North Saskatchewan River

Low Lift Pumps Alum Carbon (Seasonally)

Primary Polymer

Clarifier Clarifier Drains to River Clarifers Clarifers Drains to River

Sodium Sodium Hypochlorite Hypochlorite

Stilling Basin Stilling Basin

Filter Polymer

Backwash & Filter to 9 Filters Waste to River*

UV Inactivation Ammonia Bypass* Sodium Hypochlorite (trim) (when required) Caustic Soda Fluoride On Site Reservoirs

High Lift Pumps

Field Reservoirs & Customers

* All chlorinated waste streams are dechlorinated prior to discharge to the river 1.3 Process Schematic - E. L. Smith (Plant 4)

North Saskatchewan River

Low Lift Pumphouse #1 Low Lift Pumphouse #2

Alum (Jet Mixer) Mixer Building Carbon (Seasonally)

Primary Polymer Primary Polymer

Clarifiers Drain to Clarifer 1 Clarifer 2 Clarifer 3 River

Sodium Hypochlorite C1/C2 Eff C3 Eff Channel Sodium Hypochlorite Channel Filter Polymer Filter Polymer Alum (trim) Alum (trim)

Backwash & Filter 18 Filters to Waste to River* UV Inactivation Ammonia Sodium Hypochlorite (trim) Caustic Soda Fluoride Bypass To River* (when required)

Three On-Site Reservoirs

High Lift Pumps

Field Reservoirs & Customers

* All chlorinated waste streams are dechlorinated prior to discharge to the river 1.4 Summary of Violations and Notifications for 2020

EPCOR AEP Date of Incident Description Reference Incident Number Number

Authorization from Alberta Environment and Parks was received for a maintenance outage of the fluoride system at the E.L. Smith Water Treatment Plant beginning in ENV- September 2019. On-line fluoride analyzers were to be kept in operation during the January 20, 20200120- 362898 outage to continue to monitor natural levels of fluoride system in the water. However, 2020 343990 the online system was shut down during another plant outage and not restarted. This was reported to AEP on January 20, 2020.

As part of the random distribution sampling program, a sample was collected on January 27th and a lab result of 0.77 mg/L residual chlorine was obtained. This did not meet an EPCOR internal guideline and further response was required. Valves were ENV- inspected and hydrants were sampled from to determine the cause of the lower than January 30, 20200131- expected chlorine residual. A valve was found in the closed position. After a field test 363303 2020 742939-v1 revealed chlorine in the distribution system less than the Approval requirement of >0.5 mg/L, the requirement to collect subsequent samples within 24 hours was not achieved. This was reported to AEP on January 31st, 2020. There was no impact to customers, the valve was opened and the system flushed.

As part of our monthly random monitoring water quality program, a sample was collected at the 7-Eleven on 17604-97 St. The levels of chlorine and turbidity were within normal operating ranges and it tested negative for E coli, but tested positive for ENV- total coliforms. Following our Failed Bacteriological Communication Protocol AEP was February 9, 20200211- 363586 contacted on their hot line and a reference file #363586 assigned. Water Trouble was 2020 116629 dispatched to collect 4 re-samples for further testing and the 7-Day Letter was sent. All resamples had normal levels of chlorine and turbidity and all bacteriological results were absent for total coliform and E. coli.

Two samples of treated drinking water (Feb 18/20 – Rossdale 0.040 mg/L and E.L. Smith 0.018 mg/L) were found to exceed the MAC for Bromate (0.01 mg/L) during the ENV- preparation of the monthly report (Wednesday March 18, 2020) and was reported at February 18, 20200319- 364663 that time to AEP (Reference# 364663). The elevated level of bromate was also seen in 2020 081713 the raw water samples. Bromate concentrations prior to and after these exceedances were all below the MAC. 1.4 Summary of Violations and Notifications for 2020

EPCOR AEP Date of Incident Description Reference Incident Number Number

EPCOR's approval to operate mandates a minimum of 190 samples to be analyzed for ENV- random monitoring purposes. In April and due to the many places, buildings and 20200515- May 15, 2020 366491 facilities that are closed because of COVID-19, we were able to collect only 177 299985 samples. The violation was reported to AEP with Ref. # 366491.

Fluoride in the treated water at the EL Smith WTP dropped below the 0.05 mg/L amended Approval limit beginning May 27 and has remained below for periods since. ENV- The fluoride system has been out-of-service for capital upgrades since September 20200624- June 24, 2020 368119 2019. Fluoride measured in the treated water is a result of background levels in the raw 044461 water less any removed through the treatment process. The event was reported to AEP (AEP Reference No. 368119).

Clareview Reservoir was taken out-of-service on May 26 for cleaning and inspection. The inspection revealed surface water ingress at construction joints near the roof of the ENV- reservoir, likely during heavy rain events. The reservoir is sampled weekly and 20200624- monitoring data for the past 5 years show parameters including chlorine, turbidity and June 24, 2020 368065 054927 bacteriological quality to be within Approval limits and Guidelines for Canadian Drinking Water Quality AEP and AHS have been notified of the condition. (AEP Reference No. 368065).

Water Sample was taken from Hydrant 8076 on July 12 after completing a cast iron main renewal. The subsequent water quality test failed for Total coliforms. Occurrence ENV- was called into AEP as a notification. Follow-up lab results reported on July 16, 2020. 20200714- This sample also tested positive for total coliforms. Subsequent flushing and resampling July 12, 2020 369013 328612 was completed. Follow-up lab results reported at July 18, 2020 . This time, all sample results had pass results for all parameters. The related operating procedure for this type of work will include enhanced flushing.

ENV- Upon completion of a hydrant relocation and after flushing, a sample was collected from 20200810- hydrant H10623 on August 6, 2020 at 16:45 hrs. Sample tested positive for total August 6, 2020 370061 524324 coliforms. Hydrant nozzle was disinfected again and flushed and then resampled and the results were acceptable for all parameters. 1.4 Summary of Violations and Notifications for 2020

EPCOR AEP Date of Incident Description Reference Incident Number Number

A maintenance crew completed a lead service renewal at a residential property. In ENV- service sampling was completed at the outside hose bib and water was restored to the 20201005- October 2, customer. The sample tests results came back E.coli Positive resulting in a violation 372429 845798 2020 with AEP. Re-samples were taken and sent to the lab on October 4th and 5th with all

results coming back negative.

The Original sample (October 9) was taken from a bleeder valve connected to watermain on project WRR2015. Sample tested positive for total coliforms. Line was ENV- flushed and four (4) additional samples were taken (upstream, downstream, bleeder, October 9, 20201011- 372668 and hose bid near original sample site). All samples passed except for the bleeder, 2020 286397 which again tested positive for total coliforms. The bleeder tree was replaced and all four (4) samples retaken. These four (4) samples all passed.

ENV- Two (2) samples taken from hydrant H27077 tested positive for Total Coliforms. After October 29, 20201104- flushing, additional samples were collected and tested. All sample results came back 373265 2020 961335 negative for Total Coliforms and all other parameters were within normal range.

ENV- Chlorinated water in spill tank 1 that was above the maximum permissible concentration October 30, 20201102- of 5 mg/L according to the EPCOR Drainage Services Bylaw 18100 was released into N/A 2020 234092 the sanitary sewer.

1.5 Alberta Environment Operator Certifications (Effective up to end Q1 2020) Operator Contact Number: EPCOR Water Services Dispatch (24 hr) (780) 412-4500

ROSSDALE WATER TREATMENT PLANT (LEVEL IV)

Employee Name Title Alberta Environment Certification Level Director, Edmonton Water Treatment Plants Senior Manager, Operations WT II, WWT II Manager, Operations (Jan 1 - Mar 1) WT IV Manager, Operations (Mar 2 - Dec 31 WT III, WW III Manager, Transmission Operations WT III Operations Engineer Day Foreman WT III HIE Foreman WT IV Operations Foreman WT IV Operations Foreman WT IV Operations Foreman WT IV Operations Foreman WT IV Operations Foreman WT IV Lead Hand, Operator WT II Lead Hand, Operator WT II Lead Hand, Operator WT IV, WD III, WWT II, WWC III Lead Hand, Operator WT II Lead Hand, Operator WT III Water Operator WT II Water Operator WT III Water Operator WT III Water Operator WT I Water Operator WT II Water Operator WT II Water Operator WT II, WD II, WWT II, WWC II Water Operator WT II, WWT II Water Operator WT II Water Operator WT I Water Operator WT III Water Operator WT I Transmission Foreman WT III Operator I WT III Training Operator Foreman WT III Training Operator WT III 1.5 Alberta Environment Operator Certifications (Effective up to end Q1 2020) Operator Contact Number: EPCOR Water Services Dispatch (24 hr) (780) 412-4500

E.L. SMITH TREATMENT PLANT (LEVEL IV)

Employee Name Title Alberta Environment Certification Level Director, Edmonton Water Treatment Plants Senior Manager, Operations WT II, WWT II Manager, Operations WT III, WWT III Operations Engineer Day Foreman WT IV HEI Foreman WT IV Training Operator Foreman WT IV Operations Foreman WT IV Operations Foreman WT III Operations Foreman WT III Operations Foreman WT IV Operations Foreman WT III Lead Hand, Operator WT III Lead Hand, Operator WT III Lead Hand, Operator WT II, WD II, WWT I Lead Hand, Operator WT III Lead Hand, Operator WT IV Lead Hand, Operator WT II Operator I WT II Operator I WT II Operator I WT II, WD II, WWT I, WWC II Operator I WT III, WWT II, Operator I WT II Operator I WT IV, WD II 1.5 Alberta Environment Operator Certifications (Effective up to end Q1 2020) Operator Contact Number: EPCOR Water Services Dispatch (24 hr) (780) 412-4500

DISTRIBUTION SYSTEM (LEVEL IV FACILITY) WATER DISTRIBUTION (WD) - NETWORK MAINTENANCE Senior Manager, Distribution Const and Maint Manager, Distribution Maintenance Employee Name Title Alberta Environment Certification Level Foreman III WD III Foreman III WD II Foreman III WD III Foreman III WD III Foreman I WD III Foreman I WD II Foreman I WD III Foreman I WD II Foreman I WD II Foreman I WD II Foreman I WD II Foreman I WD II Foreman I WD II Foreman I WD III Foreman I WD II Foreman I WD II Foreman I WD IV Equipment Operator III WD II Equipment Operator III WD II Equipment Operator III WD I Equipment Operator III WD II Equipment Operator III WD II Equipment Operator III WD I Equipment Operator III WD I Equipment Operator III WD II Equipment Operator III WD II Equipment Operator III WD II Equipment Operator III WD II Equipment Operator III WD I Equipment Operator III WD II Equipment Operator III WD II Labourer II WD I Labourer II WD I Labourer II WD I Labourer III WD II Labourer II WD I Labourer III WD I Labourer II WD I Labourer II WD II Labourer III WD I 1.5 Alberta Environment Operator Certifications (Effective up to end Q1 2020) Operator Contact Number: EPCOR Water Services Dispatch (24 hr) (780) 412-4500

DISTRIBUTION SYSTEM (LEVEL IV FACILITY) WATER DISTRIBUTION (WD) - NETWORK MAINTENANCE Senior Manager, Distribution Const and Maint Manager, Distribution Maintenance Employee Name Title Alberta Environment Certification Level Labourer II WD I Labourer II WD I Labourer II WD I Labourer II WD I Labourer II WD I Labourer II WD I Labourer II WD II Labourer II WD I Labourer II WD II Truck Driver III WD II Truck Driver III WD II Truck Driver III WD I Truck Driver III WD I Truck Driver III WD I

DISTRIBUTION SYSTEM (LEVEL IV FACILITY) WATER DISTRIBUTION (WD) - NETWORK MAINTENANCE Manager, Dist. Maint Schedule WD III Employee Name Title Alberta Environment Certification Level Foreman III WD III Welder WD II Maintenance Repairman I WD II Maintenance Repairman I WD I Maintenance Repairman I WD I Labourer III WD I Labourer II WD I Foreman I WD I

DISTRIBUTION SYSTEM (LEVEL IV FACILITY) WATER DISTRIBUTION (WD) - NETWORK MAINTENANCE Vacant Manager, Distribution Engineering Employee Name Title Alberta Environment Certification Level Water Network Operator WD IV, WWC I Water Network Operator WD IV Water Systems Technical Support Specialist WD II Water Systems Technical Support Specialist WD II Water Systems Technical Support Specialist WD IV 1.5 Alberta Environment Operator Certifications (Effective up to end Q1 2020) Operator Contact Number: EPCOR Water Services Dispatch (24 hr) (780) 412-4500

DISTRIBUTION SYSTEM (LEVEL IV FACILITY) WATER DISTRIBUTION (WD) - NETWORK MAINTENANCE Senior Manager, Operations Manager, Field Operations Employee Name Title Alberta Environment Certification Level Foreman III WD III Foreman III WD IV Foreman I WD II Foreman I WD II Foreman I WD II Foreman I WD II Foreman I WD II Labourer III WD II Labourer III WD II Labourer III WD I Labourer III WD II Labourer III WD I Labourer III WD III Labourer II WD II Labourer II WD I Labourer III WD I Labourer II WD II Labourer II WD I Labourer III WD I Labourer II WD II

DISTRIBUTION SYSTEM (LEVEL IV FACILITY) WATER DISTRIBUTION (WD) - NETWORK MAINTENANCE Manager, Trouble WD I Employee Name Title Alberta Environment Certification Level Foreman III WD III Water Systems Serviceman WD II Water Systems Serviceman WD II Water Systems Serviceman WD II Water Systems Serviceman WD II Water Systems Serviceman WD II Water Systems Serviceman WD III Water Systems Serviceman WD II Water Systems Serviceman WD III Water Systems Serviceman WD II Water Systems Serviceman WD II Water Systems Serviceman WD II Labourer II WD I Labourer II WD II 1.5 Alberta Environment Operator Certifications (Effective up to end Q1 2020) Operator Contact Number: EPCOR Water Services Dispatch (24 hr) (780) 412-4500

DISTRIBUTION SYSTEM (LEVEL IV FACILITY) WATER DISTRIBUTION (WD) - NETWORK MAINTENANCE Vacant Manager, Metering Operations Employee Name Title Alberta Environment Certification Level Foreman III WD IV Meter Mechanic II WD II Meter Installer II WD II Meter Installer II WD III Meter Mechanic I WD II Meter Installer I WD I Meter Installer I WD II Meter Installer I WD I Meter Installer I WD II Meter Installer I WD III Meter Installer I WD II Meter Installer I WD II Meter Installer I WD I Meter Installer I WD I Meter Installer I WD I Team Lead, Dispatch WD IV, WWC II, WT I, WWT I Dispatcher Coordinator Dispatcher Coordinator WD II Dispatcher Coordinator WD I Dispatcher Coordinator WD II Dispatcher Coordinator WD II Inspector – Water Metering WD II Inspector – Water Metering WD I Lead Hand - Airports WD II. WT II, WWT I, WWC I Inspector - Cross Connections WD I Manager - One Water Plan Outreach WD II Manager, Operations WD II, WT III, WWT II, WWC II

(End of Section)

1.7 Energy Consumption and Usage Energy Consumption Power Consumption (kWh):

2020 2019 Change - % Rossdale W.T.P. 28,560,112 26,841,439 6.40% E. L. Smith W.T.P. 44,368,668 45,388,049 -2.25% Field Pump Stations 13,441,946 13,366,666 0.56% TOTAL 86,370,726 85,596,155 0.90%

Gas Consumption (GJ):

2020 2019 Change - % Plants 98,536 95,311 3.38% Pumping Stations 3,387 3,814 -11.22% TOTAL 101,923 99,125 2.82%

Water Production/Pumpage(ML):

2020 2019 Change - % Rossdale W.T.P. 45,608 43,177 5.63% E. L. Smith W.T.P. 83,949 86,974 -3.48% Pump Stations 45,371 44,940 0.96% TOTAL 129,557 130,151 -0.46% Note: The reservoirs and booster stations are not included into these totals.

Energy Usage

2020 2019 Energy Consumption for Treatment and 86,370,726 85,596,155 Pumpage (kWh) Energy in kW.h per 667 658 ML pumped Gas Consumption - All 101,923 99,125 Facilities (GJ) Gas Consumption - All Field Pump Stations 3,387 3,814 (GJ)

(End of Section) 2.1 Storage Capacities of Reservoirs

Operating Dead/ Available Fire Storage Gross Station Storage Emergency (ML) (ML) (ML) (ML) (ML)

Water Treatment Plant Reservoir Cells

Rossdale Total 80.42 0.00 80.42 16.98 97.40

E.L. Smith Total 95.20 0.00 95.20 42.30 137.50

WTPs Total 175.62 0.00 175.62 59.28 234.90

Field Reservoir Cells

Rosslyn 97.54 12.56 110.10 12.93 123.04

Clareview 50.51 2.95 53.46 11.14 64.60

Papaschase 66.80 9.71 76.51 5.63 82.14

Londonderry 39.10 2.58 41.68 3.56 45.24

North Jasper Place 29.74 4.66 34.40 11.66 46.06

Ormsby 37.41 2.99 40.40 4.87 45.27

Thorncliff 37.10 2.93 40.03 3.40 43.43

Kaskitayo 21.78 3.96 25.74 3.20 28.94

Mill Woods 46.98 5.92 52.90 3.33 56.23

Castle Downs 22.70 2.41 25.11 8.93 34.04

Discovery Park 5.01 1.22 6.23 0.70 7.10

Sub Total 454.67 51.89 506.56 69.35 576.09 Grand Total 630.29 51.89 682.18 128.63 810.99 (End of Section) 2.2 Reservoir Pressure Operating Ranges

Facilities Elev., m Operating Pressure Range, kPa (mTH) TREATMENT PLANTS Discharge Min. Normal Range High PRV

Rossdale 622 840 (708) 860 (710) 880 (712) 900 (714) 950 (719) 960-980 E.L.Smith 621 950 (718) 960 (719) 980 (721) 1000 (723) 1080 (731) 1175 RESERVOIRS Inlet Disch. Fill Alarm Normal High PRV Clareview 650 649 430 (693) 530 (703) 550 (706) 580 (709) 620 (712) 610 Rosslyn 1 670 310 (702) 370 (708) 390 (710) 420 (713) 450 (716) Rosslyn 2 671 300 (702) 330 (705) 380 (710) 410 (713) 440 (716) North Jasper Place 675 675 290 (705) 350 (711) 370 (713) 390 (715) 470 (723) Thorncliff 672 672 350 (708) 380 (711) 420 (715) 440 (717) 495 (723) Ormsby 1 679 679 325 (712) 355 (715) 365 (716) 380 (718) 460 (726) Castledowns 1* 679 260 (705) 300 (710) 380 (718) 400 (720) 570 Papaschase 1 693 variable 120 (705) 160 (710) 200 (714) 300 (724) Londonderry 678 678 210 (700) 430 (722) 460 (725) 490 (728) 540 (733) 570

Castledowns 679 678 260 (705) 430 (722) 460 (725) 490 (728) 540 (733) 570

Rosslyn 3 669 500 (720) 530 (723) 560 (726) 630 (733) 660

Ormsby, Lewis Estates 679 625 (743) 645 (746) 660 (747) 680 (750) 710

Kaskitayo 2 674 674 345 (709) 550 (730) 590 (734) 640 (739) 690 (744) 680 Papaschase 2 689 690 70 (696) 380 (729) 410 (732) 450 (736) 500 (741) 520 Mill Woods 679 679 270 (706) 520 (732) 550 (735) 590 (739) 620 (742) 630 Discovery Park 716 716 208 (745) 330 (750) 360 (753) 470 (764) 520 (769) 550, 585

Low Suct. BOOSTER STATIONS Discharge Alarm Min Normal High High High Trip

Burnewood 695 60 (701) 550 (751) 560 (752) 580 (754) 610 (757) 620-640 Laurel 724 210 (745) 260 (751) 280 (752) 300 (755) 350 (760) Ellerslie 695 695 60 (701) 540 (750) 550 (751) 560 (752) 580 (754) 600 (756) Terwillegar ~683 60 (689) 480 (732) 540 (738) 590 (743) 650 (749) 640 Parkland 682 620 (745) 650 (749) 700 (754) 720 (756) Walker 724 160 410 (759) 440 (762) 480 (765) 500 (767) 650 Big Lake 678 270 365 (709) 395 (713) 425 (714) 475 (719) 625 *Emergency Only (End of Section) 2.3 Fire Stations & Other City Pressure Monitors

Elevation m T. Head kPa LOCATION m Min. Max. Min. Max. # Fire Hall 1 10351 96 St. 661.759 703 722 400 540 2 10217 107 St. 667.018 708 717 400 490 3 11226 76 Ave. 667.792 708 717 395 485 5 9020 111 Ave. 663.986 708 717 430 520 6 8105 96 St. 663.863 708 717 430 520 7 5025 118 Ave. 655.873 705 713 480 560 8 12503 128 St. 674.153 708 713 330 410 9 5604 50 St. 693.967 730 740 350 455 11 6110 98 Ave. 664.07* 708 717 430 520 12 9020 156 St. 673.546 711 720 360 450 13 4035 119 St. 669.812 716 723 450 520 15 5120 97 St. 675.232 708 715 320 390 16 2940 66 St. 693.516 730 740 350 455 17 15505 Castledowns Rd. 680.669 715 740 340 585 20 2303 105 St. 679.57 713 720 325 395 22 10124 123 St. 668.561 708 716 385 465 24 131 Haddow Cl. 685* 717 730 305 430 26 2803 34 St. 712.5 742 766 295 525 27 1203 Ellwood Rd. SW 686 724 749 375 615 28 12110 26 Ave. SW 695 719 756 230 625 Other City Points Westview Village 696.7 729 742 320 450 Sobeys 167 Ave 91 St 682* 720 735 370 520 Home Depot 17 St 707.6* 748 757 400 480 Home Depot Windermere 684* 730 742 400 660 Clover Bar 731.87 803 762 300 700 TAMS 750.14 778 807 270 560 NOTE: 50 kPa ALLOWANCE FOR ALARM LIMITS AT MIN. and MAX. * appoximate elevation (End of Section) 2.4 Regional Customers

Minimum Normal Range Elevation Customer (m) HGL Pressure HGL Pressure HGL Pressure (m) (kPa) (m) (kPa) (m) (kPa) Regional Water Customer Group* CRPWSC (Parkland) 682.353 708 250 712 290 715 320 Sturgeon County 692 717 240 723 304 723 354 Strathcona County 664.384 700 349 703 379 709 438 Morinville 662.65 698 383 702 422 707 471 St. Albert Sturgeon 685.173 703 175 707 214 712 263 St. Albert Oakmont 655.45 696 402 700 441 706 491 CRNWSC (Northeast) 643.05 691 470 696 519 702 578 CRSWSC (Southwest) 690.104 715 244 720 293 730 391 Bulk Customers* Enoch Cree Nation 703.7 717 128 720 160 728 240 Namao 681.495 710 280 713 309 726 437 *Based on Water Supply Agreements (End of Section) 2.5 Pumping Facilities Number of Pumps Maximum Design Facilities Year Fixed Variable Discharge Flow by Pump Built Total Speed Speed (ML/d) Water Treatment Plants Rossdale Plant 1947 6 4 2 4 @ 100, 2 @ 105 E.L. Smith Plant 1976 4 2 2 2 @ 95, 2 @ 205 Primary Zone Clareview 1979 3 1 2 1 @ 14, 2 @ 30 Rosslyn 1 1955 3 3 0 3 @ 20 Rosslyn 2 1969 1 1 0 1 @ 22 North Jasper Place 1974 4 3 1 2 @ 13, 2 @ 26 Thorncliff 1970 3 3 0 3 @ 12 Ormsby Place 1969 3 2 1* 2 @ 16, 1@ 32 Papaschase 1 1976/82 2 2 0 2 @ 20 North Secondary Zone Londonderry 1974/79 3 1 2 2 @ 15, 1 @ 21 Castledowns 1979 3 1 2 3 @ 17 Rosslyn 3 1963 3 3** 0 2 @ 26; 1@18 West Secondary Zone Parkland Booster St. 1973 2 2 0 1 @ 2, 1 @ 4 Ormsby, Lewis Estates 1969 3 0 3 1 @ 20, 1@ 15, 1 @ 5 South Secondary Zone Papaschase 2 1968/71 3 2 1 2 @ 13, 1 @ 23 Mill Woods 1977 6 3 2 3 @ 16, 1 @ 24, 1 @ 32, 1 @ 18 Kaskitayo 1980 5 3 2 3 @ 10, 2 @ 15 Terwillegar Booster St. 1998 3 2 1 3 @ 17 South Tertiary Zone Burnewood Booster St. 1985 4 2 2 3 @ 19, 1 @ 14 Ellerslie Booster St. 2007 2 0 2 2 @ 6 Laurel Booster St. 2018 2 0 2 2 @ 2 Blackmud Creek Booster St.1982 3 0 3 1@17, 1@34, [email protected] South Quaternary Zone Walker Booster St. 2015 5 0 5 2 @ 2, 2 @ 7, 1@ 17 Big Lake Booster St. 2016 5 0 5 2 @ 8, 2 @ 25, 1 @ 34 Discovery Park Zone Discovery Park 2020 5 0 5 [email protected], [email protected], [email protected] TOTAL 85 37 43 *Ormsby Pump #3 can be used to support Primary Pressure Zone or West Secondary Pressure Zone depending on the discharge header valve configuation. The totals include this pump once. ** Rosslyn Pump 5 was converted to a booster pump in 2013 and contributes to the North Secondary zone so it now counts as a Rosslyn 3 pump. (End of Section) 2.6 Production Summary

Water Production 2020 2019 2018 Treated and Pumped into the System (ML) 129,825 130,166 135,827 Water Treated at Rossdale Plants (ML) 45,877 43,172 48,714 Water Treated at E. L. Smith Plant (ML) 83,948 86,994 87,113 Supplied to Residential Customers (ML) 66,604 62,370 63,471 Supplied to Commercial/Industrial Customers (ML)21,407 26,133 27,228 Supplied to Suburban Customers (ML) 33,610 33,970 35,346 Percentage Accounted for from: Metered & Bulk Sources 94% 95% 93% Assumed System Leakage 6% 5% 7% Average Day Pumpage (ML) 355 357 372 Peak Day Demand (ML) 441 489 528

Population Served 2020 2019 2018 Approximate Population Served (City) 1,047,003 972,223 951,000 Approximate Population Served (Region) 354,000 349,000 341,000 Approximate Population Served (Total) 1,401,003 1,321,223 1,292,000 4% 6.0% 1.2% 5.3% Per Capita Consumption (L/cap) 2020 2019 2018 Average Day Demand 253 270 288 Peak Day Demand 315 370 409

(End of Section) 2.7 Raw Water Intake (ML) 2020

Rossdale E.L. Smith Plants Combined Month Plant 1 Plant 2 Plant Total Min Max Avg Plant Total Total Min Max Avg Total Min Max Avg Total January 0.0 0.0 0.0 0.0 63 134 118 3,651 3,651 261 321 285 8,822 12,472 February 0.0 58 16 453 68 139 113 3,290 3,743 149 304 275 7,980 11,723 March 49 116 73 2,266 0.0 120 68 2,103 4,369 71 292 266 8,245 12,614 April 48 70 58 1,749 73 110 85 2,537 4,286 240 301 264 7,906 12,192 May 31 80 59 1,828 46 110 88 2,738 4,566 245 319 271 8,407 12,973 June 50 90 70 2,097 69 110 88 2,641 4,738 92 300 264 7,913 12,651 July 50 65 58 1,791 85 110 93 2,894 4,685 223 328 273 8,475 13,160 August 50 82 58 1,797 70 105 90 2,789 4,586 163 321 283 8,760 13,346 September 0.0 70 50 1,444 33 150 100 3,014 4,458 153 300 270 8,092 12,550 October 0.0 80 42 1,258 74 154 104 3,112 4,369 45 320 271 8,397 12,767 November 60 102 89 2,677 0.0 85 27 806 3,484 106 311 281 8,422 11,906 December 12 77 63 1,945 32 87 78 2,404 4,348 43 297 243 7,543 11,891

Annual Total 19,304 31,978 51,282 98,962 150,243

Annual 0.0 116 53 0.0 154 88 43 328 270 Min/Max/Avg 2.8 Treated Water Production (ML) 2020

Rossdale (Plant 1 & Plant 2) E.L. Smith Plants Combined

Flow Meters Flow Meters Estimated (Highlift Flow) Month Avg Total

Min Max Avg Total Min Max Avg Total Min Max Avg Total

January 1,629.53 1,629.53 1524.8 0.07,120.41 1,614.21 7,288.951,614.21 1514.6209 11.7 107 31.0 3304.43,303 31.00 146 31.0295 230 7,136 149 303 236 7,304 342 10,607 February 1,667.84 1,667.84 1506.4 0.06,491.48 1,681.75 6,632.321,681.75 1512.1208 12.2 115 29.0 3346.23,328 29.00 0.0 29.0296 223 6,478 0.0 302 228 6,618 343 9,947 1,679.52March 1,679.52 1624.9 0.06,656.96 1,668.62 6,796.661,668.62 1610.7209 14.5 127 31.0 3932.03,932 31.00 0.0 31.0300 215 6,668 0.0 308 220 6,808 346 10,739 1,625.63April 1,625.63 1588.3 7.66,261.03 1,623.57 6,408.651,623.57 1596.5210 15.4 126 30.0 3791.53,768 30.00 43 30.0299 209 6,263 46 305 214 6,411 339 10,179 1,848.23May 1,848.23 1710.3 0.07,178.18 1,836.09 7,326.791,836.09 1700.9213 15.6 127 31.0 3944.03,938 31.00 22 31.0298 232 7,190 23 303 237 7,339 364 11,277 1,819.27June 1,819.27 1644.6 6,809.7735 1,833.74 6,943.451,833.74 1650.2211 15.1 140 30.0 4208.14,187 30.00 0.0 30.0341 227 6,795 0.0 348 231 6,929 371 11,116 1,887.60July 1,887.60 1686.7 7,374.5521 1,873.94 7,509.251,873.94 1682.1209 15.3 131 31.0 4067.14,056 31.00 0.0 31.0347 238 7,388 0.0 353 243 7,523 374 11,579 August1,819.47 1,819.47 1619.1 0.17,610.86 1,825.07 7,719.381,825.07 1632.9208 15.4 134 31.0 4187.74,159 31.00 0.0 31.0342 245 7,605 0.0 350 249 7,714 383 11,872 September 1,898.14 1,898.14 1662.9 0.06,748.06 1,898.11 6,872.601,898.11 1655.1212 14.0 139 30.0 4163.34,157 30.00 0.0 30.0293 225 6,748 0.0 299 229 6,873 368 11,030 October 1,910.27 1,910.27 1693.5 0.06,885.77 1,914.10 7,013.211,914.10 1689.1213 14.7 129 31.0 4001.93,992 31.00 0.0 31.0318 222 6,882 0.0 330 226 7,009 355 11,001 November 1,877.97 1,877.97 1653.0 1.36,970.31 1,896.81 7,088.411,896.81 1645.2208 12.0 105 30.0 3150.53,146 30.00 0.0 30.0300 232 6,951 0.0 354 236 7,070 341 10,216 December 1,678.97 1,678.97 1583.6 0.06,196.29 1,668.41 6,340.121,668.41 1601.3207 15.3 126 31.0 3944.23,911 31.00 0.0 31.0295 200 6,207 0.0 300 205 6,351 331 10,262

Annual Total 45,877 82,312 83,948 129,825

Annual 0.0 213 125 0.0 347 225 0.0 354 229 355 Min/Max/Avg

NOTES: ' -- ' indicates plant offline - Estimated flows are based on UV effluent flow meters to address inaccuracy of highlift flow meters. - As of July 1, 2009, plants combined data is the sum of Rossdale flow meters and E.L. Smith estimated flow data. 3.1 Raw Water Quality - North Saskatchewan River 2020

Rossdale E.L. Smith

Month Turbidity (NTU) pH Colour (TCU) Turbidity (NTU) pH Colour (TCU)

Min Max Avg Min Max Avg Min Max Avg Min Max Avg Min Max Avg Min Max Avg January 1.4 3.9 2.0 7.9 8.1 8.0 5.8 10.3 7.3 1.6 3.8 2.3 7.8 8.1 8.0 6.0 10.6 7.7 February 1.3 7.1 1.8 7.9 8.1 8.0 4.9 8.7 6.8 1.5 8.0 1.8 7.9 8.1 8.0 5.4 7.9 7.0 March 1.3 6.8 1.9 7.9 8.2 8.0 5.6 8.7 6.6 1.5 3.3 2.1 7.9 8.1 8.0 6.0 7.9 6.8 April 1.2 1,000 75 6.7 8.1 7.9 1.2 110.4 33.7 1.3 1,400 120 7.2 8.1 7.9 5.3 118.2 33.7 May 15 1,800 150 7.7 8.3 8.0 21.9 139.2 53.8 18 1,900 170 7.5 8.3 8.0 23.2 173.0 53.9 June 26 800 80 7.8 8.3 8.2 19.0 71.1 36.3 38 600 100 7.9 8.3 8.1 20.2 70.7 36.3 July 12 1,100 130 7.8 8.4 8.2 20.3 136.4 51.2 15 1,200 160 7.7 8.4 8.2 19.8 123.3 50.6 August 1.9 85 9.7 8.2 8.6 8.4 5.0 30.2 11.9 2.4 90 14 7.9 8.6 8.4 4.6 31.4 11.9 September 1.4 5.6 2.0 8.3 8.5 8.4 3.0 8.3 5.4 1.9 8.4 2.8 8.2 8.5 8.4 3.6 9.5 5.6 October 1.5 7.2 2.9 8.2 8.4 8.3 1.6 6.6 4.5 2.0 11 4.0 8.1 8.4 8.3 3.3 6.1 4.6 November 1.9 9.8 4.0 8.1 8.3 8.2 2.2 7.9 5.9 2.7 28 5.5 8.1 8.4 8.2 4.2 8.5 6.3 December 0.80 3.4 1.9 7.8 8.3 8.2 3.3 9.0 5.6 1.4 8.1 2.2 8.0 8.2 8.1 4.3 10.1 6.1

Annual Min/Max/Avg 0.80 1,800 39 6.7 8.6 8.1 1.2 139.2 19.1 1.3 1,900 50 7.2 8.6 8.1 3.3 173.0 19.3

NOTES: ' -- ' indicates plant offline 3.2 Treated Water Quality Entering the Distribution System 2020

Rossdale E.L. Smith Turbidity Chloramine Fluoride Total Hardness Colour Turbidity Chloramine Fluoride Total Hardness Colour (NTU) Residual (mg/L) pH Residual (mg/L) (mg/L as CaC03) (TCU) (NTU) Residual (mg/L) pH Residual (mg/L) (mg/L as CaC03) (TCU) Month Min Max Avg Min Max Avg Min Max Avg Min Max Avg Avg Avg Min Max Avg Min Max Avg Min Max Avg Min Max Avg Avg Avg

January 0.04 0.10 0.06 1.90 2.30 2.07 7.7 8.0 7.9 0.53 0.71 0.68 185 1.3 0.04 0.08 0.04 1.89 2.21 2.03 7.6 8.3 7.9 0.06 0.11 0.10 184 0.9 February 0.04 0.09 0.06 1.90 2.21 2.05 7.6 8.0 7.9 0.61 0.71 0.68 182 1.4 0.04 0.06 0.04 1.91 2.21 2.00 7.8 8.2 8.1 0.09 0.12 0.11 181 1.1 March 0.03 0.09 0.06 1.90 2.21 2.04 7.9 8.1 8.0 0.60 0.74 0.70 187 1.5 0.04 0.07 0.04 1.88 2.19 2.00 7.9 8.1 8.0 0.11 0.13 0.12 186 1.2 April 0.04 0.13 0.06 1.80 2.26 2.03 7.6 8.0 7.8 0.56 0.78 0.67 162 0.9 0.04 0.11 0.05 1.81 2.08 1.95 7.2 8.2 7.8 0.06 0.37 0.15 161 1.0 May 0.03 0.11 0.06 1.90 2.21 2.01 7.6 8.0 7.7 0.53 0.83 0.68 155 1.2 0.04 0.10 0.05 1.91 2.18 2.03 7.4 7.9 7.7 0.02 0.19 0.07 154 1.4 June 0.04 0.12 0.06 1.90 2.11 1.97 7.6 7.9 7.8 0.61 0.74 0.67 168 1.1 0.04 0.07 0.04 1.73 2.08 1.96 7.7 8.0 7.9 0.03 0.09 0.05 167 1.4 July 0.03 0.10 0.06 1.80 2.21 1.99 7.5 8.0 7.7 0.63 0.73 0.68 166 1.1 0.04 0.14 0.04 1.83 2.12 1.96 7.6 8.2 7.8 0.03 0.09 0.05 167 1.4 August 0.04 0.10 0.05 1.90 2.21 2.02 7.6 7.9 7.7 0.66 0.80 0.72 167 0.8 0.03 0.07 0.04 1.83 2.31 2.02 7.5 8.0 7.8 0.08 0.16 0.12 166 1.0 September 0.03 0.08 0.05 1.90 2.21 2.03 7.7 7.9 7.9 0.65 0.79 0.71 181 0.5 0.04 0.07 0.04 1.50 2.47 2.03 7.8 8.3 8.0 0.14 0.19 0.16 175 0.8 October 0.03 0.11 0.05 1.60 2.21 2.05 7.7 8.4 8.0 0.59 0.79 0.72 166 0.5 0.04 0.11 0.05 1.87 2.07 1.98 8.0 8.3 8.1 0.11 0.22 0.19 165 0.9 November 0.03 0.12 0.06 1.90 2.21 2.07 8.0 8.2 8.1 0.64 0.75 0.72 177 1.3 0.04 0.08 0.04 1.94 2.22 2.05 7.9 8.2 8.1 0.15 0.63 0.22 173 1.4 December 0.03 0.09 0.06 1.90 2.26 2.06 8.0 8.2 8.1 0.64 0.76 0.72 186 1.2 0.04 0.06 0.04 1.84 2.17 2.01 7.6 8.1 7.9 0.62 0.81 0.75 177 1.2

Annual Min/Max/ 0.03 0.13 0.06 1.60 2.30 2.03 7.5 8.4 7.9 0.53 0.83 0.70 174 1.1 0.03 0.14 0.04 1.50 2.47 2.00 7.2 8.3 7.9 0.02 0.81 0.18 171 1.1 Avg

NOTES: ' -- ' indicates plant offline 3.3 Rossdale Filters 1 - 9 Particle Counts (no./mL, >2um) 2020

Filter 1 2 3 4 5 6 7 8 9

Month Min Max Avg Min Max Avg Min Max Avg Min Max Avg Min Max Avg Min Max Avg Min Max Avg Min Max Avg Min Max Avg

January ------1 44 11 1 44 7 1 44 6 1 42 6 1 45 6 February ------1 37 3 1 39 4 1 35 4 1 45 13 1 41 5 1 40 6 1 43 5 1 45 5 March 1 39 4 1 44 3 1 36 3 1 41 4 1 33 5 1 42 5 1 45 5 1 34 5 1 45 5 April 1 62 8 1 50 7 1 55 9 1 52 9 1 54 12 1 55 10 1 55 10 1 48 10 1 60 8 May 1 36 7 1 49 6 1 38 5 1 39 6 1 40 7 1 40 6 1 37 7 1 38 6 1 46 6 June 1 45 2 1 43 2 1 45 2 1 49 2 1 36 2 1 23 2 1 40 2 1 23 2 1 29 1 July 1 43 1 1 24 1 1 32 2 1 28 2 1 37 2 1 28 2 1 26 2 1 29 2 1 35 2 August 1 45 5 1 37 4 1 27 3 1 45 4 1 25 5 1 30 6 1 37 4 1 29 5 1 25 4 September 1 38 4 1 30 2 1 16 2 1 38 4 1 34 4 1 34 5 1 44 4 1 31 4 1 35 3 October 1 45 5 1 44 5 1 28 4 1 33 5 1 34 6 1 32 6 1 31 5 1 33 4 1 28 4 November 1 45 10 1 38 9 1 31 7 1 49 8 1 32 10 1 36 11 1 41 8 1 35 10 1 30 7 December 1 45 5 1 45 4 1 26 3 1 43 5 1 28 4 3 33 8 1 38 4 2 37 7 1 45 5 Annual 1 62 5 1 50 4 1 55 4 1 52 5 1 54 7 1 55 6 1 55 5 1 48 5 1 60 5 Min/Max/Avg

NOTE: ' -- ' indicates filter offline 3.4 E.L. Smith Filters 1 - 9 Particle Counts (no./mL, >2um) 2020

Filter 1 2 3 4 5 6 7 8 9

Month Min Max Avg Min Max Avg Min Max Avg Min Max Avg Min Max Avg Min Max Avg Min Max Avg Min Max Avg Min Max Avg

January 1 33 4 3 45 18 ------1 45 3 1 41 6 1 45 6 1 45 4 1 45 7 1 45 3 February 1 32 3 1 45 18 ------1 45 4 1 37 5 2 45 9 1 45 5 1 45 8 1 45 5 March 1 42 5 1 45 5 ------1 36 3 1 34 7 2 44 9 1 43 5 2 45 9 1 45 5 April 1 122 10 1 130 8 ------1 149 6 1 148 15 2 147 15 1 50 7 1 52 12 1 88 6 May 1 45 6 1 38 4 ------1 29 4 1 45 7 1 38 9 1 35 5 1 42 9 1 34 5 June 1 30 2 1 29 2 ------1 32 2 1 28 3 1 29 5 1 29 2 1 20 3 1 24 2 July 1 32 2 1 29 2 ------1 32 2 1 30 3 2 27 5 1 31 2 1 21 2 1 20 2 August 1 35 5 1 39 5 ------1 32 5 1 45 8 2 45 12 1 37 6 1 31 5 1 45 6 September 1 45 8 1 45 5 ------1 35 4 1 37 9 1 38 5 1 38 6 1 33 6 1 41 6 October 1 36 13 1 31 5 ------1 31 5 1 30 6 1 31 6 1 43 7 1 44 6 1 30 6 November 8 41 16 1 89 7 ------1 30 5 1 30 5 1 37 7 1 31 7 1 34 6 1 32 7 December 3 38 14 1 45 3 ------1 45 3 1 29 2 1 46 4 1 43 4 1 36 4 1 44 4

Annual 1 122 8 1 130 7 ------1 149 4 1 148 6 1 147 8 1 50 5 1 52 6 1 88 5 Min/Max/Avg

NOTE: ' -- ' indicates filter offline 3.5 E.L. Smith Filters 10 - 18 Particle Counts (no./mL, >2um) 2020

Filter 10 11 12 13 14 15 16 17 18

Month Min Max Avg Min Max Avg Min Max Avg Min Max Avg Min Max Avg Min Max Avg Min Max Avg Min Max Avg Min Max Avg

January 1 45 5 1 45 4 1 45 4 1 45 4 1 44 3 1 45 7 1 45 4 1 45 3 1 45 9 February 1 45 9 1 45 6 1 45 6 1 45 6 1 44 5 2 45 9 1 45 6 1 45 6 1 45 6 March 2 45 9 1 45 6 1 45 7 1 45 6 1 44 5 2 44 9 1 45 7 1 45 6 1 45 6 April 1 94 8 1 30 6 1 94 7 1 45 6 1 47 6 1 56 11 1 45 6 1 71 6 1 50 7 May 1 37 6 1 40 6 1 41 6 1 45 5 1 38 5 1 41 7 1 39 5 1 40 5 1 44 5 June 1 25 2 1 23 2 1 33 2 1 33 2 1 16 2 1 36 3 1 29 2 1 37 2 1 27 2 July 1 17 2 1 25 2 1 26 2 1 17 2 1 24 3 1 42 3 1 30 2 1 24 2 1 38 2 August 1 45 6 1 36 6 1 37 6 1 35 5 1 33 5 1 39 6 1 34 5 1 41 5 1 35 4 September 1 28 6 1 40 6 1 45 7 1 37 6 1 41 6 1 45 8 1 38 5 1 43 6 1 32 5 October 1 31 7 1 28 6 1 33 7 1 39 6 1 30 6 1 44 8 1 32 6 1 40 6 1 41 6 November 1 44 8 1 32 6 1 36 7 1 45 8 1 43 6 1 45 8 1 95 8 1 44 8 1 45 7 December 1 45 7 1 45 4 1 45 4 1 194 8 1 45 4 1 45 6 1 45 4 1 45 5 1 45 4 Annual 1 94 6 1 45 5 1 94 5 1 194 5 1 47 5 1 56 7 1 95 5 1 71 5 1 50 5 Min/Max/Avg

NOTES: ' -- ' indicates filter offline 3.6 Rossdale Filters 1 - 9 Turbidity (NTU) 2020

Filter 1 2 3 4 5 6 7 8 9

Month Min Max Avg Min Max Avg Min Max Avg Min Max Avg Min Max Avg Min Max Avg Min Max Avg Min Max Avg Min Max Avg

January ------0.02 0.09 0.04 0.02 0.09 0.04 0.03 0.09 0.05 0.01 0.09 0.04 0.02 0.09 0.05 February ------0.03 0.08 0.04 0.02 0.08 0.03 0.01 0.08 0.04 0.02 0.08 0.03 0.01 0.07 0.03 0.03 0.08 0.04 0.01 0.08 0.03 0.03 0.08 0.04 March 0.02 0.08 0.04 0.03 0.08 0.04 0.02 0.08 0.03 0.01 0.08 0.04 0.02 0.08 0.04 0.02 0.08 0.03 0.03 0.08 0.04 0.01 0.08 0.03 0.03 0.08 0.04 April 0.01 0.09 0.03 0.02 0.09 0.04 0.01 0.09 0.03 0.01 0.10 0.03 0.02 0.09 0.03 0.01 0.09 0.03 0.03 0.09 0.04 0.01 0.09 0.04 0.03 0.09 0.04 May 0.00 0.08 0.03 0.03 0.08 0.04 0.01 0.09 0.02 0.02 0.08 0.03 0.02 0.09 0.04 0.01 0.08 0.03 0.03 0.07 0.04 0.02 0.09 0.03 0.03 0.09 0.04 June 0.01 0.07 0.02 0.02 0.07 0.03 0.01 0.05 0.02 0.02 0.05 0.02 0.02 0.07 0.04 0.01 0.05 0.02 0.03 0.08 0.03 0.01 0.06 0.03 0.03 0.05 0.03 July 0.01 0.08 0.02 0.02 0.08 0.03 0.01 0.05 0.02 0.01 0.08 0.03 0.03 0.09 0.04 0.01 0.06 0.02 0.02 0.09 0.04 0.01 0.06 0.03 0.03 0.08 0.04 August 0.01 0.06 0.02 0.02 0.08 0.03 0.01 0.07 0.02 0.01 0.08 0.03 0.02 0.08 0.04 0.01 0.08 0.02 0.02 0.08 0.03 0.01 0.08 0.03 0.02 0.08 0.03 September 0.01 0.07 0.02 0.02 0.08 0.03 0.01 0.05 0.02 0.02 0.07 0.02 0.02 0.08 0.04 0.01 0.07 0.02 0.02 0.08 0.03 0.01 0.08 0.03 0.02 0.08 0.03 October 0.01 0.09 0.03 0.02 0.10 0.03 0.01 0.08 0.02 0.01 0.09 0.03 0.02 0.10 0.04 0.01 0.07 0.02 0.02 0.10 0.04 0.01 0.07 0.03 0.02 0.09 0.04 November 0.02 0.10 0.04 0.03 0.10 0.04 0.01 0.10 0.03 0.02 0.09 0.03 0.03 0.10 0.06 0.02 0.09 0.03 0.03 0.10 0.04 0.01 0.10 0.04 0.02 0.10 0.04 December 0.00 0.10 0.05 0.00 0.09 0.04 0.01 0.10 0.04 0.00 0.10 0.05 0.01 0.10 0.05 0.01 0.08 0.02 0.00 0.10 0.05 0.01 0.10 0.04 0.01 0.09 0.05

Annual 0.00 0.10 0.03 0.00 0.10 0.04 0.01 0.10 0.02 0.01 0.10 0.03 0.01 0.10 0.04 0.01 0.09 0.03 0.00 0.10 0.04 0.01 0.10 0.03 0.01 0.10 0.04 Min/Max/Avg

NOTES: ' -- ' indicates filter offline 3.7 E.L. Smith Filters 1 - 9 Turbidity (NTU) 2020

Filter 1 2 3 4 5 6 7 8 9

Month Min Max Avg Min Max Avg Min Max Avg Min Max Avg Min Max Avg Min Max Avg Min Max Avg Min Max Avg Min Max Avg

January 0.02 0.08 0.03 0.01 0.08 0.02 ------0.01 0.08 0.02 0.02 0.08 0.03 0.02 0.08 0.03 0.02 0.08 0.04 0.03 0.08 0.04 0.01 0.08 0.03 February 0.02 0.08 0.03 0.01 0.07 0.01 ------0.01 0.08 0.02 0.02 0.07 0.03 0.02 0.08 0.03 0.03 0.08 0.04 0.03 0.08 0.05 0.01 0.08 0.04 March 0.02 0.08 0.03 0.01 0.08 0.02 ------0.01 0.08 0.02 0.02 0.08 0.03 0.02 0.08 0.03 0.03 0.08 0.04 0.03 0.08 0.05 0.01 0.08 0.03 April 0.02 0.09 0.03 0.00 0.09 0.02 ------0.01 0.09 0.02 0.02 0.09 0.03 0.02 0.09 0.03 0.03 0.09 0.04 0.03 0.09 0.05 0.01 0.09 0.03 May 0.01 0.08 0.03 0.01 0.08 0.02 ------0.01 0.08 0.02 0.02 0.08 0.03 0.01 0.08 0.03 0.03 0.08 0.04 0.02 0.08 0.05 0.02 0.08 0.03 June 0.02 0.08 0.03 0.01 0.08 0.01 ------0.01 0.07 0.01 0.02 0.08 0.03 0.02 0.08 0.02 0.03 0.08 0.03 0.03 0.08 0.05 0.01 0.08 0.03 July 0.02 0.08 0.03 0.01 0.07 0.01 ------0.01 0.08 0.02 0.02 0.08 0.03 0.02 0.07 0.03 0.03 0.08 0.03 0.03 0.08 0.04 0.01 0.07 0.02 August 0.02 0.08 0.03 0.01 0.08 0.01 ------0.01 0.07 0.01 0.02 0.07 0.03 0.02 0.08 0.03 0.03 0.08 0.03 0.03 0.08 0.04 0.01 0.08 0.02 September 0.02 0.10 0.04 0.01 0.09 0.02 ------0.01 0.10 0.02 0.02 0.09 0.03 0.02 0.09 0.03 0.02 0.10 0.04 0.01 0.10 0.05 0.01 0.10 0.02 October 0.02 0.09 0.03 0.01 0.09 0.02 ------0.01 0.09 0.02 0.02 0.10 0.03 0.02 0.10 0.03 0.02 0.10 0.04 0.03 0.10 0.05 0.01 0.10 0.03 November 0.02 0.09 0.03 0.01 0.09 0.02 ------0.01 0.09 0.02 0.02 0.09 0.03 0.02 0.09 0.03 0.01 0.09 0.04 0.03 0.10 0.05 0.02 0.09 0.03 December 0.02 0.10 0.03 0.01 0.10 0.01 ------0.01 0.08 0.02 0.02 0.09 0.03 0.02 0.10 0.03 0.02 0.10 0.03 0.03 0.09 0.05 0.02 0.10 0.03

Annual 0.01 0.10 0.03 0.00 0.10 0.02 ------0.01 0.10 0.02 0.02 0.10 0.03 0.01 0.10 0.03 0.01 0.10 0.04 0.01 0.10 0.05 0.01 0.10 0.03 Min/Max/Avg

NOTES: ' -- ' indicates filter offline 3.8 E.L. Smith Filters 10 - 18 Turbidity (NTU) 2020

Filter 10 11 12 13 14 15 16 17 18

Month Min Max Avg Min Max Avg Min Max Avg Min Max Avg Min Max Avg Min Max Avg Min Max Avg Min Max Avg Min Max Avg

January 0.02 0.08 0.03 0.02 0.08 0.03 0.02 0.08 0.02 0.03 0.08 0.04 0.02 0.08 0.03 0.03 0.08 0.03 0.03 0.08 0.04 0.02 0.08 0.03 0.02 0.08 0.04 February 0.02 0.06 0.03 0.03 0.08 0.03 0.02 0.06 0.02 0.03 0.08 0.04 0.02 0.07 0.03 0.03 0.07 0.03 0.03 0.08 0.04 0.02 0.08 0.03 0.03 0.08 0.04 March 0.02 0.07 0.03 0.03 0.08 0.03 0.02 0.06 0.02 0.03 0.08 0.04 0.03 0.07 0.03 0.03 0.07 0.03 0.03 0.07 0.04 0.03 0.08 0.03 0.03 0.07 0.04 April 0.02 0.09 0.03 0.02 0.09 0.04 0.01 0.09 0.02 0.03 0.09 0.04 0.03 0.09 0.03 0.03 0.09 0.03 0.03 0.09 0.04 0.03 0.09 0.03 0.03 0.09 0.04 May 0.02 0.08 0.03 0.03 0.08 0.03 0.02 0.08 0.02 0.03 0.08 0.04 0.03 0.08 0.03 0.03 0.08 0.03 0.03 0.08 0.03 0.03 0.08 0.03 0.02 0.08 0.04 June 0.02 0.07 0.03 0.03 0.08 0.04 0.02 0.08 0.02 0.03 0.08 0.04 0.03 0.08 0.03 0.03 0.08 0.03 0.03 0.08 0.03 0.03 0.08 0.03 0.03 0.08 0.04 July 0.02 0.07 0.03 0.03 0.08 0.04 0.02 0.08 0.02 0.03 0.08 0.04 0.03 0.08 0.03 0.03 0.08 0.03 0.03 0.08 0.03 0.03 0.08 0.03 0.03 0.08 0.04 August 0.02 0.06 0.03 0.02 0.08 0.03 0.02 0.06 0.02 0.03 0.08 0.04 0.03 0.08 0.03 0.03 0.07 0.03 0.03 0.08 0.03 0.02 0.08 0.03 0.02 0.07 0.03 September 0.02 0.09 0.03 0.02 0.09 0.04 0.01 0.08 0.03 0.03 0.09 0.04 0.03 0.09 0.04 0.03 0.09 0.04 0.03 0.09 0.04 0.00 0.09 0.04 0.02 0.09 0.03 October 0.02 0.09 0.03 0.03 0.09 0.04 0.01 0.08 0.03 0.03 0.09 0.04 0.03 0.09 0.04 0.03 0.09 0.05 0.03 0.09 0.04 0.02 0.09 0.04 0.02 0.09 0.03 November 0.02 0.08 0.03 0.03 0.09 0.04 0.01 0.07 0.02 0.03 0.10 0.04 0.03 0.09 0.04 0.03 0.09 0.04 0.03 0.09 0.04 0.03 0.09 0.04 0.02 0.09 0.03 December 0.02 0.09 0.04 0.03 0.09 0.04 0.02 0.09 0.03 0.03 0.09 0.04 0.03 0.09 0.03 0.03 0.09 0.04 0.03 0.09 0.04 0.03 0.09 0.04 0.02 0.09 0.03

Annual 0.02 0.09 0.03 0.02 0.09 0.04 0.01 0.09 0.02 0.03 0.10 0.04 0.02 0.09 0.03 0.03 0.09 0.04 0.03 0.09 0.04 0.00 0.09 0.04 0.02 0.09 0.03 Min/Max/Avg

NOTES: ' -- ' indicates filter offline 3.9 Combined Filter Effluent Water Quality 2020

Rossdale E.L. Smith

Month Particle Counts (no./mL,>2um) Turbidity (NTU) Particle Counts (no./mL,>2um) Turbidity (NTU)

Min Max Avg Min Max Avg Min Max Avg Min Max Avg January 1 35 7 0.04 0.07 0.05 1 20 6 0.01 0.05 0.03 February 1 23 6 0.04 0.07 0.05 1 16 7 0.03 0.06 0.03 March 1 22 4 0.04 0.09 0.05 1 16 7 0.01 0.05 0.03 April 1 36 8 0.03 0.11 0.05 1 42 8 0.02 0.06 0.03 May 1 26 5 0.04 0.08 0.05 1 16 6 0.02 0.04 0.03 June 1 23 1 0.04 0.08 0.05 1 9 2 0.01 0.04 0.03 July 1 32 1 0.04 0.09 0.05 1 10 2 0.02 0.04 0.03 August 1 27 4 0.01 0.06 0.05 1 19 6 0.01 0.07 0.03 September 1 21 3 0.04 0.06 0.04 1 21 6 0.01 0.06 0.03 October 1 25 4 0.04 0.08 0.05 1 15 7 0.03 0.05 0.03 November 3 24 9 0.03 0.06 0.05 1 20 7 0.03 0.05 0.03 December 1 20 5 0.04 0.10 0.06 1 22 5 0.01 0.07 0.03

Annual 1 36 5 0.01 0.11 0.05 1 42 6 0.01 0.07 0.03 Min/Max/Avg

NOTES: ' -- ' indicates plant offline 3.10 Rossdale UV Disinfection - Filters 1 - 3 2020

Filter 1 2 3 Transmittance (%) Dosage (mJ/cm²) Flow (MLD) Dosage (mJ/cm²) Flow (MLD) Dosage (mJ/cm²) Flow (MLD) Month Min Max Avg Min Max Total Min Max Avg Min Max Total Min Max Avg Min Max Total Min Max Avg January ------0.0 ------0.0 ------0.0 88.9 95.0 92.3 February ------0.0 31.7 57.6 35.7 11.3 27.2 161.4 33.3 57.1 35.7 10.4 29.9 411.1 90.7 95.1 92.6 March 34.5 69.2 35.8 13.0 27.3 421.0 33.7 78.2 35.7 11.4 27.2 495.5 33.6 62.7 35.8 9.1 27.0 428.9 90.6 93.2 92.3 April 34.0 56.7 40.7 10.8 30.9 415.4 34.9 55.8 39.5 11.1 29.8 439.6 34.5 57.8 38.9 13.3 30.1 377.3 90.2 96.8 93.7 May 34.2 56.3 35.6 16.3 32.5 404.6 34.2 54.2 35.6 15.2 33.0 465.9 34.5 58.2 35.5 12.1 32.6 450.0 87.2 92.4 90.5 June 34.8 46.3 35.6 10.5 29.1 446.7 33.9 46.0 35.5 11.7 30.4 486.5 34.1 56.4 35.5 13.8 30.3 520.2 88.1 92.2 90.7 July 34.0 65.5 35.6 11.6 29.5 457.9 34.0 59.3 35.5 11.4 31.4 492.2 33.7 64.7 35.5 13.7 28.7 451.0 86.0 92.1 90.5 August 34.7 53.1 36.2 12.3 29.8 444.5 34.0 53.9 35.9 10.4 31.1 460.0 34.1 73.9 38.8 11.5 31.0 452.8 91.2 95.5 93.4 September 33.9 66.4 39.7 12.4 32.6 473.5 34.2 60.0 39.4 12.3 33.9 499.9 34.6 60.8 41.7 11.5 34.9 462.6 91.8 96.9 95.0 October 34.5 70.0 45.3 9.0 31.2 476.7 34.3 85.4 42.9 10.0 32.5 456.1 34.5 89.8 48.5 10.0 31.1 420.3 91.8 96.6 95.4 November 31.0 70.9 36.8 9.1 27.8 365.0 34.2 71.7 36.6 10.9 30.2 340.4 33.3 90.0 39.1 10.0 28.5 371.1 90.9 94.4 92.6 December 34.4 64.9 38.0 10.8 30.9 449.6 34.2 66.4 38.5 11.2 31.6 477.6 33.8 69.1 42.1 10.6 30.4 382.0 90.2 94.9 93.3 Annual 4355 4775 4727 Total Annual Min/Max/ 31.0 70.9 38.1 9.0 32.6 31.7 85.4 37.5 10.0 33.9 33.3 90.0 38.9 9.1 34.9 86.0 96.9 92.7 Avg

NOTES: - Each filter has a UV reactor - Transmittance (%) is a grab sample of the filter effluent prior to the UV reactor of a random online filter ' -- ' indicates filter and UV reactor offline 3.11 Rossdale UV Disinfection - Filters 4 - 6 2020

Filter 4 5 6 Transmittance (%) Dosage (mJ/cm²) Flow (MLD) Dosage (mJ/cm²) Flow (MLD) Dosage (mJ/cm²) Flow (MLD) Month Min Max Avg Min Max Total Min Max Avg Min Max Total Min Max Avg Min Max Total Min Max Avg January ------0.0 33.8 56.1 37.0 9.6 30.9 604.8 34.3 56.1 35.9 10.3 36.4 705.0 88.9 95.0 92.3 February 34.0 47.7 35.7 12.3 29.6 317.2 33.9 59.5 37.5 11.2 27.6 441.6 34.1 56.3 35.7 12.0 32.3 528.0 90.7 95.1 92.6 March 34.6 71.2 35.8 12.6 26.0 450.7 34.2 61.3 36.6 8.7 24.9 448.8 32.5 70.9 35.7 14.0 30.1 477.7 90.6 93.2 92.3 April 34.0 90.9 40.0 11.0 30.1 443.0 34.1 63.9 43.7 12.5 28.6 415.2 31.5 68.3 38.1 12.5 33.6 498.2 90.2 96.8 93.7 May 33.2 58.9 35.7 13.1 28.6 430.9 34.3 55.2 35.6 10.0 30.3 426.3 33.9 67.0 35.6 11.4 34.8 493.0 87.2 92.4 90.5 June 33.9 70.8 35.6 9.7 28.0 422.6 34.0 69.9 35.5 7.8 28.4 425.5 34.9 52.3 35.6 11.6 32.2 485.2 88.1 92.2 90.7 July 34.0 50.8 35.6 11.8 28.2 400.6 33.5 67.3 35.5 9.6 29.2 468.5 33.6 58.3 35.6 7.9 31.7 487.1 86.0 92.1 90.5 August 34.6 47.4 36.4 14.8 30.6 471.3 32.9 62.5 40.9 15.7 29.5 507.4 33.8 54.2 36.1 11.1 33.7 519.1 91.2 95.5 93.4 September 34.5 98.3 40.9 10.2 34.3 465.5 34.4 69.8 49.0 14.6 30.6 454.4 34.3 65.0 39.2 10.8 35.4 514.7 91.8 96.9 95.0 October 35.1 85.4 44.7 8.2 30.5 422.6 34.7 99.0 58.1 11.0 27.3 418.1 33.7 77.2 45.3 10.3 33.5 497.4 91.8 96.6 95.4 November 34.5 81.4 37.4 8.8 27.8 383.8 32.1 94.7 44.1 10.2 26.2 324.0 33.6 104.2 38.1 8.0 31.9 397.2 90.9 94.4 92.6 December 34.4 58.5 37.7 10.3 32.0 458.1 32.6 68.1 44.8 10.0 28.0 425.6 34.5 60.7 40.3 9.6 31.9 493.2 90.2 94.9 93.3 Annual 4666 5360 6096 Total Annual Min/Max/ 33.2 98.3 37.8 8.2 34.3 32.1 99.0 41.5 7.8 30.9 31.5 104.2 37.6 7.9 36.4 86.0 96.9 92.7 Avg

NOTES: - Each filter has a UV reactor - Transmittance (%) is a grab sample of the filter effluent prior to the UV reactor of a random online filter ' -- ' indicates filter and UV reactor offline 3.12 Rossdale UV Disinfection - Filters 7 - 9 2020

Filter 7 8 9 Transmittance (%) Dosage (mJ/cm²) Flow (MLD) Dosage (mJ/cm²) Flow (MLD) Dosage (mJ/cm²) Flow (MLD) Month Min Max Avg Min Max Total Min Max Avg Min Max Total Min Max Avg Min Max Total Min Max Avg January 33.9 86.1 35.8 7.5 35.4 741.7 33.7 61.1 35.8 11.1 37.2 733.1 33.4 52.7 35.7 11.9 37.7 727.0 88.9 95.0 92.3 February 33.7 53.9 35.7 11.8 34.7 572.0 34.8 56.2 35.9 10.0 32.8 595.2 33.7 76.9 35.7 12.3 33.2 574.9 90.7 95.1 92.6 March 33.7 70.7 35.6 12.8 29.7 512.0 32.2 73.6 35.7 10.7 29.2 484.0 33.5 70.2 35.6 9.4 28.9 506.0 90.6 93.2 92.3 April 34.2 63.0 38.5 12.2 33.3 502.8 34.7 57.9 39.1 10.8 33.8 440.2 30.0 59.8 38.7 12.0 33.0 451.2 90.2 96.8 93.7 May 33.8 55.3 35.6 10.1 36.1 493.0 33.6 52.3 35.6 14.3 34.0 509.9 32.5 58.1 35.6 16.0 35.1 489.1 87.2 92.4 90.5 June 34.5 55.3 35.6 12.3 33.9 526.7 34.1 57.3 35.6 15.4 34.1 528.1 34.3 44.0 35.6 13.5 34.9 572.6 88.1 92.2 90.7 July 34.3 56.2 35.6 12.7 33.4 547.4 34.0 54.9 35.6 15.3 33.4 583.7 34.2 55.9 35.6 19.5 32.4 390.3 86.0 92.1 90.5 August 33.1 56.5 36.0 14.6 37.6 513.2 34.1 57.5 36.1 17.1 35.6 495.6 33.9 58.0 35.7 15.1 34.3 518.6 91.2 95.5 93.4 September 34.0 58.8 37.9 15.6 37.8 547.7 33.9 73.8 38.0 11.4 42.3 497.5 33.3 53.0 37.2 11.6 34.0 458.7 91.8 96.9 95.0 October 33.5 75.5 43.5 10.7 34.6 507.7 34.8 82.0 43.4 10.9 34.6 550.8 34.3 68.8 40.3 10.1 33.6 478.3 91.8 96.6 95.4 November 34.1 104.8 38.1 8.4 32.9 378.7 33.6 119.2 37.2 9.9 33.4 408.6 32.9 68.6 37.0 10.9 33.7 388.0 90.9 94.4 92.6 December 34.3 50.9 37.4 11.5 33.9 514.3 31.4 88.0 36.9 12.5 32.5 468.5 33.5 85.3 38.6 8.9 33.3 468.6 90.2 94.9 93.3 Annual 6357 6295 6023 Total Annual Min/Max/ 33.1 104.8 37.1 7.5 37.8 31.4 119.2 37.1 9.9 42.3 30.0 85.3 36.8 8.9 37.7 86.0 96.9 92.7 Avg

NOTES: - Each filter has a UV reactor - Transmittance (%) is a grab sample of the filter effluent prior to the UV reactor of a random online filter ' -- ' indicates filter and UV reactor offline 3.13 E.L. Smith UV Disinfection - UV Reactors 1 - 4 2020

Filter 1 2 3 4 Transmittance (%) Dosage (mJ/cm²) Flow (MLD) Dosage (mJ/cm²) Flow (MLD) Dosage (mJ/cm²) Flow (MLD) Dosage (mJ/cm²) Flow (MLD) Month Min Max Avg Min Max Total Min Max Avg Min Max Total Min Max Avg Min Max Total Min Max Avg Min Max Total Min Max Avg January 45.5 183.4 61.1 48.6 136.2 1,717.9 46.0 147.3 61.2 39.1 102.2 1,570.4 44.7 91.5 58.9 43.0 111.3 2,782.6 46.4 80.1 46.8 39.8 92.9 1,835.4 90.4 95.9 93.9 February 50.1 100.6 59.7 52.9 113.9 1,528.9 45.4 78.8 52.8 64.5 97.7 865.1 41.8 93.4 57.3 66.8 133.5 2,633.1 44.9 124.8 47.5 54.5 90.4 2,168.8 92.1 95.3 93.1 March 42.8 124.3 64.8 51.1 104.9 2,049.8 48.4 108.6 65.0 37.2 106.7 870.6 44.3 130.3 60.8 35.5 109.0 2,410.7 46.8 122.7 47.7 40.0 89.5 2,167.2 91.7 95.3 93.0 April 49.6 169.1 71.8 41.9 93.5 1,091.7 50.0 235.0 70.3 27.6 129.9 1,811.5 53.6 250.9 73.9 26.2 122.1 2,372.3 45.4 136.9 50.3 28.5 84.8 1,668.5 91.4 99.5 94.3 May 43.5 113.8 61.9 38.9 96.8 2,109.8 47.0 120.1 61.2 29.4 92.5 1,528.4 43.6 192.5 63.8 41.7 95.9 2,311.1 46.2 100.3 47.3 39.8 86.2 1,751.2 87.0 93.8 90.9 June 42.5 119.7 64.0 34.3 119.3 2,118.4 44.4 166.6 63.3 41.7 100.8 1,373.1 37.6 109.7 64.1 46.9 108.7 2,048.8 44.9 109.2 50.3 33.5 105.0 1,781.8 89.7 92.5 91.1 July 45.2 86.3 59.0 53.8 135.7 2,403.6 50.9 130.7 66.3 32.5 90.8 830.5 44.7 82.6 57.0 55.5 124.2 2,472.6 43.3 92.8 46.9 37.1 87.6 2,164.0 88.2 92.5 91.0 August 42.2 116.7 66.7 26.4 97.5 1,682.8 44.8 104.4 70.6 38.7 98.7 1,777.2 40.0 94.5 67.5 40.4 111.8 2,486.9 45.1 50.4 46.8 28.6 92.2 2,232.7 90.5 95.4 93.5 September 45.1 87.8 60.3 34.8 100.6 2,449.8 47.7 125.0 68.9 33.4 91.1 123.7 45.0 123.8 63.8 48.8 102.2 2,478.8 45.2 104.8 47.2 32.8 89.3 2,259.3 92.0 96.3 94.7 October 45.4 112.0 70.7 55.9 104.0 1,935.6 46.3 112.4 65.5 52.4 103.5 757.0 44.6 93.4 66.6 54.6 108.0 2,617.2 46.8 47.6 47.2 62.3 102.4 2,485.1 92.8 96.1 94.5 November 44.9 97.9 61.8 51.1 104.2 2,315.5 46.7 199.3 65.2 46.8 91.0 846.2 44.8 101.1 61.7 53.7 97.5 2,313.2 46.2 109.8 47.3 36.7 90.1 2,126.6 91.1 94.4 92.7 December 45.7 116.9 68.5 35.4 119.9 1,877.3 46.1 118.6 64.7 34.7 90.8 748.5 44.4 112.7 67.4 40.2 110.9 2,272.7 41.7 110.9 53.3 35.7 92.4 1,893.7 90.8 94.7 93.4

24,534 Annual 23,281 13,102 29,200 Total

Annual Min/Max/ 42.2 183.4 63.8 26.4 136.2 44.4 235.0 64.8 27.6 129.9 37.6 250.9 63.6 26.2 133.5 41.7 136.9 48.1 28.5 105.0 87.0 99.5 93.0 Avg

NOTES: ' -- ' indicates UV reactor offline - Transmittance (%) is a grab sample of the combined filter effluent prior to the UV reactor 3.14 Log Removal 2020

Rossdale E.L. Smith

Log Removal Log Removal

Month Giardia Virus Cryptosporidium Giardia Virus Cryptosporidium

Min Max Avg Min Max Avg Min Max Avg Min Max Avg Min Max Avg Min Max Avg

January 6.5 8.5 7.6 12 18 14 6.5 7.0 6.7 6.6 7.2 7.0 5.6 9.2 7.2 6.5 7.0 6.8 February 6.5 9.2 7.7 11 16 14 6.5 7.0 6.6 6.6 7.2 6.7 5.8 8.6 7.3 6.5 7.0 6.5 March 6.5 9.0 7.7 11 17 14 6.4 6.5 6.5 6.5 6.8 6.7 6.1 9.1 7.6 6.1 6.5 6.5 April 7.4 9.5 8.4 10 21 16 6.5 7.0 6.9 6.6 7.5 7.1 5.8 11 8.1 6.5 7.0 6.9 May 8.6 11.9 10.3 14 33 23 7.0 7.0 7.0 7.1 7.4 7.2 7.2 12 9.0 7.0 7.0 7.0 June 9.7 14.0 11.5 24 44 31 6.7 7.0 7.0 7.1 7.5 7.2 6.7 21 9.9 6.9 7.0 7.0 July 7.0 13.2 12.0 24 43 34 7.0 7.0 7.0 7.3 7.7 7.4 13 28 18 6.8 7.0 7.0 August 9.9 13.4 11.4 24 44 36 7.0 7.0 7.0 7.3 7.7 7.5 16 29 22 6.9 7.0 7.0 September 8.6 10.5 9.7 20 35 27 6.7 7.0 7.0 6.8 7.7 7.2 13 27 17 6.5 7.0 6.9 October 7.0 9.3 8.2 7.7 28 19 6.5 7.0 6.8 6.0 6.9 6.7 6.2 16 9.9 6.0 6.5 6.5 November 7.1 8.0 7.6 10 21 15 6.5 6.5 6.5 6.6 6.7 6.7 5.8 11 7.3 6.5 6.5 6.5 December 7.1 8.3 7.6 11 15 13 6.5 6.5 6.5 6.6 6.7 6.7 5.8 10 7.5 6.5 6.5 6.5

Annual 6.5 14.0 9.2 7.7 44 21 6.4 7.0 6.8 6.0 7.7 7.0 5.6 29 11 6.0 7.0 6.8 Min/Max/Avg

NOTES: ' -- ' indicates plant offline 4.1 Liquid Alum Chemical Consumption 2020

Dosage (mg/L) Consumption (kg)

Month Rossdale Rossdale E.L. Smith E.L. Smith Plant 1 Plant 2 Plant 1 Plant 2 Plant Total January -- 13.9 32.4 -- 103,188 103,188 597,751 February 7.11 9.74 10.2 6,537 68,073 74,610 169,346 March 7.00 7.00 6.77 32,666 30,294 62,960 114,872 April 76.7 76.7 88.9 295,872 428,125 723,997 1,496,056 May 160 160 180 599,296 899,535 1,498,831 3,091,605 June 127 127 146 557,803 687,844 1,245,647 2,363,188 July 154 154 183 574,172 910,992 1,485,164 3,156,038 August 46.0 45.9 50.4 164,687 269,708 434,395 921,219 September 27.3 27.1 22.9 81,333 166,032 247,365 380,441 October 13.8 17.5 7.08 36,550 122,325 158,874 122,519 November 6.04 6.16 6.47 33,298 10,404 43,702 112,603 December 6.30 6.28 6.05 25,456 31,209 56,664 92,958

Annual Total 2,407,669 3,727,727 6,135,396 12,618,596

Annual Avg 62.3 57.9 62.0

NOTES : ' -- ' indicates plant offline - Liquid alum consumption (kg) at 100% by weight (solution delivered to sites at a concentration of 48.5%) 4.2 Primary Polymer (Magnafloc LT 27AG) Chemical Consumption 2020

Dosage (mg/L) Consumption (kg)

Month Rossdale Rossdale E.L. Smith E.L. Smith Plant 1 Plant 2 Plant 1 Plant 2 Plant Total January -- 0.16 0.30 -- 567 567 1,666.50 February 0.11 0.13 0.26 44 456 500 216.95 March 0.10 0.10 -- 222 207 429 -- April 0.27 0.27 0.34 493 713 1,206 2,146.37 May 0.40 0.40 0.34 727 1,091 1,817 2,832.73 June 0.37 0.37 0.32 783 979 1,762 2,549.17 July 0.40 0.40 0.32 724 1,167 1,891 2,670.07 August 0.35 0.35 0.21 621 965 1,585 1,805.70 September 0.32 0.32 0.17 455 949 1,404 1,000.88 October 0.20 0.25 -- 259 827 1,086 -- November 0.10 0.10 -- 268 82 350 -- December 0.10 0.10 -- 194 244 438 --

Annual Total 4,789 8,248 13,037 14,888

Annual Avg 0.26 0.26 0.29

NOTES: ' -- ' indicates plant offline - Primary polymer consumption (kg) at 100% by weight mixed at the sites to required solution 4.3 Carbon Chemical Consumption 2020

Dosage (mg/L) Consumption (kg)

Month Rossdale Rossdale E.L. Smith E.L. Smith Plant 1 Plant 2 Plant 1 Plant 2 Plant Total January ------February ------March ------April 50.7 50.3 52.5 52,658 77,052 129,710 227,441 May 22.1 20.8 27.3 9,733 13,499 23,232 50,871 June ------July 13.9 13.6 12.3 7,558 11,496 19,055 24,357 August ------September ------October ------November ------December ------

Annual Total 69,949 102,047 171,996 302,669

Annual Avg 34.2 33.6 35.9

NOTES: ' -- ' indicates carbon not being used 4.4 Sodium Hypochlorite Chemical Consumption 2020

Rossdale E.L. Smith Month Dosage (mg/L) Consumption (kg) Dosage Consumption Plant 1 Plant 2 Plant 1 Plant 2 Plant Total (mg/L) (kg)

January -- 3.28 -- 1,499,421 1,499,421 3.10 3,598,538 February 2.88 3.11 161,105 1,288,456 1,449,562 3.15 3,303,660 March 3.06 3.00 873,601 789,383 1,662,984 3.21 3,471,714 April 3.85 3.76 852,569 1,211,203 2,063,772 3.64 3,796,017 May 3.35 3.30 764,320 1,128,226 1,892,545 3.43 3,786,748 June 3.42 3.33 899,516 1,098,342 1,997,858 3.58 3,733,691 July 3.60 3.59 805,197 1,300,088 2,105,285 3.77 4,212,181 August 3.36 3.38 752,157 1,178,642 1,930,799 3.62 4,180,973 September 3.06 3.05 553,858 1,150,921 1,704,779 3.21 3,431,347 October 2.94 2.97 462,158 1,163,589 1,625,747 3.08 3,394,344 November 3.13 3.07 1,048,524 309,833 1,358,358 3.12 3,456,644 December 3.01 2.94 736,656 885,345 1,622,000 3.07 3,118,973

Annual Total 7,909,662 13,003,449 20,913,111 43,484,830

Annual Avg 3.28 3.25 3.33

NOTES: ' -- ' indicates plant offline - Sodium hypochlorite consumption (kg) at 0.8% by weight (sodium hypochlorite generated onsite at a concentration of 0.8%) - Plant 1 was converted to sodium hypochlorite from chlorine on Feb 2, 2015. - Plant 2 was converted to sodium hypochlorite from chlorine on Feb 10, 2015. - Plant Total Consumption is the combined addition of Plant 1, Plant 2 and Post Filter Trim. 4.5 Filter Polymer (Magnafloc LT 7981) Chemical Consumption 2020

Dosage (mg/L) Consumption (kg)

Month Rossdale E.L. Smith Rossdale E.L. Smith January 0.39 0.45 1,372 3,918 February 0.39 1.05 1,389 8,392 March 0.39 1.13 1,631 9,344 April 0.38 0.41 1,518 3,186 May 0.32 0.14 1,329 1,187 June 0.27 0.08 1,192 621 July 0.25 0.07 1,048 578 August 0.19 0.27 860 2,330 September 0.30 0.47 1,291 3,878 October 0.36 0.68 1,500 5,753 November 0.44 0.64 1,449 5,457 December 0.38 0.68 1,585 5,138

Annual Total 16,166 49,782

Annual Avg 0.34 0.50

NOTES: ' -- ' indicates plant offline - Filter polymer consumption (kg) at 100% by weight mixed at the sites to required solution 4.6 Aqua Ammonia Chemical Consumption 2020

Dosage (mg/L) Consumption (kg)

Month Rossdale E.L. Smith Rossdale E.L. Smith January 0.63 0.61 11,694 25,128 February 0.63 0.60 11,879 22,743 March 0.63 0.60 13,809 23,353 April 0.60 0.60 12,515 21,766 May 0.60 0.60 13,012 24,305 June 0.60 0.60 13,844 23,006 July 0.60 0.60 13,504 24,713 August 0.60 0.60 13,839 25,503 September 0.60 0.60 13,730 23,087 October 0.62 0.59 13,743 23,562 November 0.62 0.58 10,955 23,191 December 0.62 0.58 13,507 20,786

Annual Total 156,029 281,145

Annual Avg 0.61 0.60

NOTES: ' -- ' indicates plant offline - Aqua ammonia consumption (kg) at 100% by weight (solution delivered to sites at a concentration of 19.0%) 4.7 Caustic Soda Chemical Consumption 2020

Dosage (mg/L) Consumption (kg)

Month Rossdale E.L. Smith Rossdale E.L. Smith January 4.16 10.2 8,933 102,872 February 3.09 10.2 3,771 13,407 March ------April 17.3 25.9 109,797 275,953 May 28.8 44.3 237,136 679,202 June 21.1 33.1 186,072 494,334 July 24.2 42.3 206,313 650,618 August 3.34 7.54 28,904 126,340 September 0.41 2.56 220 27,078 October ------November -- 0.61 -- 7,740 December ------

Annual Total 781,146 2,377,544

Annual Avg 17.4 22.4

NOTES: ' -- ' indicates plant offline - Caustic soda consumption (kg) at 100% by weight (solution delivered to sites at a concentration of 50.0%) 4.8 Fluoride Chemical Consumption 2020

Dosage (mg/L) Consumption (kg)

Month Rossdale EL Smith Rossdale EL Smith January 0.65 -- 10,521 -- February 0.63 -- 10,273 -- March 0.64 -- 12,229 -- April 0.66 -- 11,940 -- May 0.70 -- 13,222 -- June 0.70 -- 13,980 -- July 0.69 -- 13,634 -- August 0.70 -- 13,995 -- September 0.66 -- 13,188 -- October 0.66 -- 12,712 -- November 0.66 0.65 10,115 1,254 December 0.66 0.66 12,591 20,609

Annual Total 148,399 21,862

Annual Avg 0.67 0.66

NOTES: ' -- ' indicates plant offline - Fluoride consumption (kg) at 100% by weight (solution delivered to sites at a concentration of 21.8%) 4.9 Sodium Bisulfite Chemical Consumption 2020

Rossdale E.L. Smith Month Dosage Consumption De-chlorinated Dosage Consumption De-chlorinated (mg/L) (kg) Waste Stream (mg/L) (kg) Waste Stream to Outfall (ML) to Outfall (ML) January 27.7 23,510 336 12.9 50,271 1,466 February 23.9 25,456 404 12.9 45,737 1,333 March 18.4 19,095 416 13.5 49,786 1,402 April 15.5 19,140 505 15.9 57,926 1,414 May 9.30 15,426 613 13.8 35,630 990 June 12.5 17,810 536 12.2 29,693 943 July 11.7 19,387 615 13.5 31,925 890 August 16.4 17,555 414 12.6 33,941 1,013 September 20.3 14,901 286 14.3 44,286 1,209 October 22.8 22,862 373 11.4 39,998 1,367 November 30.7 25,752 332 11.2 39,147 1,338 December 19.4 20,993 420 14.9 48,292 1,170

Annual 241,888 506,632 14,536 Total 5,251 Annual 19.0 13.3 Avg

NOTES: ' -- ' indicates Plant Offline - Sodium bisulfite consumption (kg) at 38% by weight (solution delivered to sites at a concentration of 38.0%) 5.1 Waste Stream Volumes (ML) 2020

Rossdale E.L. Smith

Month Clarifier Clarifier Backwash Filter to Bypass Plant Total Clarifier Clarifier Backwash Filter to Bypass LLP Flush HLP Plant Total De-chlorinated Blowdown Washdown Water Waste Blowdown Washdown Water Waste Cooling Waste Flow to Outfall January 67 -- 157 83 19 326 609 -- 540 252 32 0.5 34 1,468 1,466 February 156 -- 185 48 8.8 398 557 -- 516 199 44 0.5 31 1,346 1,333 March 203 20 171 46 4.7 445 610 -- 532 192 69 0.5 23 1,426 1,402 April 317 -- 112 77 9.7 515 628 -- 382 331 93 0.8 18 1,453 1,414 May 477 -- 89 49 8.6 624 506 -- 253 135 76 6.6 33 1,009 990 June 391 20 90 21 16 538 513 -- 248 90 71 0.5 35 957 943 July 482 -- 96 31 17 626 513 -- 220 75 52 0.7 40 901 890 August 292 -- 92 28 16 428 592 -- 261 85 47 0.6 48 1,033 1,013 September 153 -- 93 37 17 300 581 -- 342 164 79 0.5 38 1,204 1,209 October 215 32 119 37 9.4 412 661 -- 457 168 54 0.4 39 1,378 1,367 November 115 20 141 46 4.5 326 641 -- 433 159 65 6.4 39 1,343 1,338 December 210 20 150 40 4.8 425 555 -- 373 118 115 3.0 19 1,182 1,170 Annual 3,079 114 1,495 543 135 5,365 -- 4,556 1,967 796 21 396 14,701 14,536 Total

NOTES: - Clarifier washdown volume(s) estimated for clarifier cleaning - LLP flush, HLP cooling and chlorinated waste flow to outfall are not applicable to the Rossdale WTP - De-chlorinated waste flow to outfall is the estimated chlorinated waste flow to outfall for dechlorination 5.2 Rossdale Clarifier Blowdown, Clarifier Washdown and Backwash Water Waste Stream Data 2020

Clarifier Blowdown Clarifier Washdown Backwash Water

Month TSS Aluminum TSS Aluminum TSS Aluminum (kg) (kg) (kg) (kg) (kg) (kg) January 32,347 4,451 0 0 11,139 3,856 February 26,332 3,331 0 0 12,739 4,410 March 32,820 2,747 486 34 19,879 6,881 April 1,555,047 31,704 0 0 8,967 3,104 May 1,670,977 65,871 0 0 6,423 2,223 June 1,322,633 54,802 5,560 230 4,010 1,388 July 1,514,322 65,084 0 0 4,518 1,564 August 184,387 19,086 0 0 1,842 638 September 57,967 10,804 0 0 1,961 679 October 56,995 7,038 105 21 9,536 3,301 November 38,245 1,909 166 10 20,577 7,123 December 26,822 2,474 97 10 13,469 4,662 Annual Total 6,518,895 269,300 6,413 305 115,060 39,829

NOTES: '--' indicates that clarifier washdown did not occur - Clarifier washdown waste stream solids, TSS and aluminum are calculated values 5.3 Rossdale Waste Stream Data 2020

De-Chlorinated Waste Flow to Waste De-Chlorinated Waste Flow to Waste Stream 3 Stream 7

Month Total Chlorine (mg/L) Sulfite (mg/L) Total Chlorine (mg/L) Sulfite (mg/L)

Min Max Avg Min Max Avg Min Max Avg Min Max Avg January 0.00 0.00 0.00 0.81 20.0 5.70 0.00 0.47 0.00 0.00 20.0 7.65 February 0.00 0.00 0.00 0.15 20.0 9.18 0.00 0.00 0.00 1.04 20.0 9.29 March 0.00 0.00 0.00 0.10 20.0 7.32 0.00 0.00 0.00 0.93 20.0 9.68 April 0.00 0.00 0.00 0.10 20.0 6.48 0.00 0.00 0.00 0.14 20.0 7.14 May 0.00 0.00 0.00 0.10 20.0 11.9 0.00 0.00 0.00 1.31 20.0 9.98 June 0.00 0.00 0.00 0.19 20.0 8.33 0.00 0.00 0.00 0.98 20.0 8.60 July 0.00 0.00 0.00 0.27 20.0 5.94 0.00 0.00 0.00 0.10 20.0 6.04 August 0.00 0.00 0.00 0.67 20.0 6.62 0.00 0.00 0.00 0.46 20.0 5.77 September 0.00 0.00 0.00 0.58 20.0 6.64 0.00 0.00 0.00 0.65 20.0 7.40 October 0.00 0.00 0.00 0.94 20.0 7.75 0.00 0.00 0.00 0.46 20.0 6.71 November 0.00 0.00 0.00 0.10 20.0 6.82 0.00 0.00 0.00 0.94 20.0 7.52 December 0.00 0.00 0.00 0.55 20.0 7.22 0.00 0.00 0.00 0.63 20.0 6.22

Annual 0.00 0.00 0.00 0.10 20.0 7.49 0.00 0.47 0.00 0.00 20.0 7.66 Min/Max/Avg 5.4 E.L. Smith Clarifier Blowdown, Clarifier Washdown and Backwash Water Waste Stream Data 2020

Clarifier Blowdown Clarifier Washdown Backwash Water

Month TSS Aluminum TSS Aluminum TSS Aluminum (kg) (kg) (kg) (kg) (kg) (kg)

January 128,379 26,039 0 0 32,780 11,347 February 59,474 7,391 0 0 34,012 11,773 March 56,787 5,013 0 0 41,314 14,301 April 1,458 65,261 0 0 29,066 10,061 May 1,109,468 134,773 0 0 24,549 8,498 June 1,433,696 102,883 0 0 29,817 10,321 July 1,086,791 137,189 0 0 22,665 7,846 August 376,820 39,545 0 0 6,584 2,279 September 97,628 16,052 0 0 13,581 4,701 October 83,035 4,945 0 0 55,346 19,158 November 109,935 4,883 0 0 80,224 27,770 December 59,853 4,057 0 0 32,491 11,247

Annual Total 4,603,324 548,032 0 0 402,428 139,302

NOTES: '--' indicates that clarifier wash did not occur - Clarifier washdown waste stream solids, TSS and aluminum are calculated values 5.5 E.L. Smith Waste Stream Data 2020

De-chlorinated Waste Flow to Outfall

Month Sulphite (mg/L) Total Chlorine (mg/L) pH

Min Max Avg Min Max Avg Min Max Avg January 1.13 2.50 2.50 0.00 0.00 0.00 7.74 8.15 7.92 February 1.11 20.0 2.60 0.00 0.00 0.00 7.81 8.23 8.11 March 1.20 2.50 2.50 0.00 0.00 0.00 7.67 8.34 8.24 April 0.62 2.50 2.46 0.00 0.00 0.00 7.10 8.34 7.94 May 0.10 2.50 2.42 0.00 0.00 0.00 6.70 8.12 7.53 June 0.12 2.50 2.23 0.00 0.00 0.00 6.92 8.42 7.72 July 0.10 11.2 2.28 0.00 0.00 0.00 3.82 11.0 7.24 August 0.12 10.0 2.51 0.00 0.00 0.00 7.00 7.66 7.43 September 0.10 2.50 2.48 0.00 0.00 0.00 7.26 8.08 7.69 October 0.10 20.0 3.58 0.00 0.00 0.00 7.63 8.09 7.96 November 0.10 20.0 5.78 0.00 0.00 0.00 7.62 8.34 8.07 December 0.10 20.0 6.04 0.00 0.00 0.00 7.25 8.56 8.22

Annual 0.10 20.0 3.12 0.00 0.00 0.00 3.8 11.0 7.8 Min/Max/Avg 6.0 Reservoir Chlorine Residual (mg/L) - Part 1 2020

Reservoir Papaschase 1 Ormsby Clareview Discharge Millwoods Discharge Kaskitayo

Day Min Max Avg Min Max Avg Min Max Avg Min Max Avg Min Max Avg

Jan 1.50 2.06 1.64 1.78 2.09 1.97 1.69 2.11 1.99 1.89 2.16 2.00 1.68 2.20 2.02

Feb 1.53 2.06 1.63 1.74 2.06 1.99 1.69 2.09 2.00 1.96 2.19 2.04 1.71 2.16 2.04

Mar 1.57 1.94 1.67 1.72 2.23 2.03 1.77 2.06 1.96 2.00 2.29 2.09 1.92 2.28 2.09

Apr 1.57 2.02 1.71 1.78 2.39 2.03 1.54 2.05 1.93 1.92 2.27 2.05 1.71 2.19 2.04

May 1.41 2.00 1.59 1.56 2.03 1.86 1.67 1.94 1.80 1.88 2.23 1.95 1.66 2.21 1.93

Jun 1.21 1.91 1.41 1.41 1.84 1.72 ------1.75 2.11 1.83 1.57 2.06 1.85

Jul 1.01 1.91 1.26 1.39 1.79 1.67 1.28 1.96 1.59 1.20 2.04 1.79 1.34 1.96 1.78

Aug 1.06 2.00 1.29 1.47 1.97 1.72 1.30 1.84 1.54 1.71 2.48 1.87 1.51 2.52 1.84

Sep 1.13 1.97 1.34 1.75 2.18 1.89 1.42 1.95 1.67 1.75 2.59 2.00 1.59 2.67 1.96

Oct 1.26 2.13 1.56 1.80 2.09 1.97 1.62 1.99 1.81 1.94 2.20 2.05 1.65 2.49 2.00

Nov 1.47 2.15 1.62 1.73 2.18 2.02 1.55 2.08 1.88 1.95 2.23 2.07 1.76 2.33 2.05

Dec 1.56 2.10 1.76 1.77 2.18 2.06 1.64 2.12 1.95 1.61 2.27 2.10 1.78 2.75 2.09

Monthly Min/Max/ 1.01 2.15 1.54 1.39 2.39 1.92 1.28 2.12 1.83 1.20 2.59 1.99 1.34 2.75 1.97 Avg

NOTES: '--' Indication Analyzer Offline 6.1 Reservoir Chlorine Residual (mg/L) - Part 2 2020

Reservoir Rosslyn 1 Londonderry N. Jasper Place Rosslyn 2 Thorncliffe

Day Min Max Avg Min Max Avg Min Max Avg Min Max Avg Min Max Avg

Jan 1.39 1.57 1.50 1.74 2.16 2.05 1.45 2.24 1.77 1.78 2.23 1.95 1.72 2.03 1.84 Feb 1.41 1.62 1.51 1.72 2.19 2.05 1.50 2.18 1.82 1.49 2.20 1.95 1.74 2.13 1.87 Mar 1.25 1.65 1.53 1.74 2.08 1.96 1.62 2.36 1.91 1.60 2.21 1.90 1.79 2.30 1.92 Apr 1.48 1.69 1.60 1.72 2.17 1.90 1.65 2.22 1.87 1.61 2.58 1.91 1.65 2.19 1.89 May 1.37 1.61 1.50 1.56 2.00 1.77 1.60 2.20 1.75 1.48 2.19 1.74 1.51 2.29 1.71 Jun 1.34 1.55 1.44 1.52 1.94 1.72 1.40 2.08 1.55 1.04 2.14 1.61 1.39 2.20 1.60 Jul 0.94 1.38 1.21 1.44 1.85 1.65 1.20 1.97 1.36 1.01 2.13 1.47 1.30 2.28 1.53 Aug 0.97 1.32 1.15 1.37 1.89 1.65 1.19 2.10 1.34 1.19 2.15 1.56 1.23 2.33 1.45 Sep 1.16 1.55 1.40 1.51 1.96 1.74 1.39 2.13 1.58 1.25 2.23 1.61 1.50 2.41 1.77 Oct 1.31 1.78 1.63 1.49 1.96 1.73 1.52 2.07 1.70 1.26 2.34 1.74 1.81 2.24 1.94 Nov 1.72 1.95 1.83 1.46 2.02 1.81 1.64 2.22 1.75 1.41 2.37 1.93 1.79 2.51 1.95 Dec 1.57 2.04 1.87 1.65 2.19 2.02 1.65 2.10 1.80 1.85 2.30 1.99 1.55 2.68 2.01 Monthly Min/Max/ 0.94 2.04 1.50 1.37 2.19 1.84 1.19 2.36 1.69 1.01 2.58 1.77 1.23 2.68 1.79 Avg

NOTES: '--' Indication Analyzer Offline