Edmonton Waterworks Monthly Report July 2021
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edmonton waterworks monthly report July 2021 TABLE OF CONTENTS 1.0 OPERATIONS AND MAINTENANCE 1.1 HIGHLIGHTS 1.1.1 Operations, Rossdale & E.L. Smith Plant ............................................... 1 1.1.2 Edmonton Incident Report Summary ...................................................... 3 1.1.3 Alberta Environmental Protection Operator Licenses ............................. 5 1.2 OPERATIONS SUMMARY 1.2.1 Raw Water Intake Report ....................................................................... 11 1.2.2 Treated Water Production Report ........................................................... 12 1.2.3 Raw Water Quality – North Saskatchewan River Report ........................ 13 1.2.4 Treated Water Quality Entering the Distribution System Report ............. 14 1.2.4-1 Rossdale: Treated Water Quality Entering the Distribution System ........ 15 1.2.4-2 E.L. Smith: Treated Water Quality Entering the Distribution System ...... 16 1.2.5 Rossdale Filters1 – 9 Particle Counts Report ......................................... 17 1.2.6 E.L. Smith Filters 1 – 9 Particle Counts Report ..................................... 18 1.2.7 E.L. Smith Filters 10 – 18 Particle Counts Report ................................... 19 1.2.8 Rossdale Filters 1 – 9 Turbidity Report ................................................... 20 1.2.9 E.L. Smith Filters 1 – 9 Turbidity Report ................................................. 21 1.2.10 E.L. Smith Filters 10 – 18 Turbidity Report ............................................. 22 1.2.11 Combined Filter Effluent Water Quality Report ....................................... 23 1.2.12 Rossdale UV Disinfection – Filters 1 – 3 Report ..................................... 24 1.2.13 Rossdale UV Disinfection – Filters 4 – 6 Report ..................................... 25 1.2.14 Rossdale UV Disinfection – Filters 7 – 9 Report ..................................... 26 1.2.15 E.L. Smith UV Disinfection – UV Reactors 1 – 4 Report ......................... 27 1.2.16 Log Removal Report .............................................................................. 28 1.2.17 Liquid Alum Chemical Consumption Report ........................................... 29 1.2.18 Primary Polymer (Magnafloc LT 27AG) Chemical Consumption Report . 30 1.2.19 Carbon Chemical Consumption Report .................................................. 31 1.2.20 Chlorine and Sodium Hypochlorite Chemical Consumption Report ........ 32 1.2.21 Filter Polymer (Magnafloc LT 7981) Chemical Consumption Report ...... 33 1.2.22 Aqua Ammonia Chemical Consumption Report ...................................... 34 1.2.22-1 LAS Ammonia Chemical Consumption ................................................... 35 1.2.23 Caustic Soda Chemical Consumption Report ......................................... 36 1.2.24 Fluoride Chemical Consumption Report ................................................. 37 1.2.25 Sodium Bisulfite (SBS) Chemical Consumption Report .......................... 38 1.2.26 Rossdale Waste Stream Data Report..................................................... 39 1.2.27 E.L. Smith Waste Stream Data Report ................................................... 40 1.2.28 Demand/Production Statistics (Estimated HLP Flow) ............................. 41 1.2.29 Reservoir Chlorine Residual (mg/L) Part 1 ............................................. 42 1.2.30 Reservoir Chlorine Residual (mg/L) Part 2 ............................................. 44 1.2.31 Summary of Mainbreaks Report ............................................................. 46 2.0 WATER QUALITY 2.1 HIGHLIGHTS 2.1.1 Water Quality Objectives for EPCOR ..................................................... 47 2.1.2 Summary of Major Chemical, Microbiological and Physical Parameters . 48 2.1.3 Composition of Edmonton Water ............................................................ 49 2.1.4 Summary of Laboratory Analysis ............................................................ 50 2.1.5 Notes on Water Quality .......................................................................... 51 2.2 SUMMARY OF ANALYSES PERFORMED 2.2.1 Bacteriological Data: Water Treatment Plants ....................................... 55 2.2.2 Bacteriological Data: Distribution System .............................................. 59 2.2.3 Protozoa Data ....................................................................................... 63 2.2.4 Treated Water Entering the Distribution System.................................... 65 2.2.5 Rossdale and E.L. Smith Combined Filter Effluent ................................ 70 2.2.6a Routine Distribution System .................................................................. 72 2.2.6b Water Quality Complaint Investigations ................................................. 77 2.2.7 Castledowns Reservoir .......................................................................... 81 2.2.8 Clareview Reservoir .............................................................................. 84 2.2.9 Discovery Park Reservoir ...................................................................... 87 2.2.10 Kaskitayo Reservoir............................................................................... 90 2.2.11 Londonderry Reservoir .................................................................................... 93 2.2.12 Millwoods Reservoir .............................................................................. 96 2.2.13 North Jasper Place Reservoir ................................................................ 100 2.2.14 Ormsby Reservoir ................................................................................. 102 2.2.15 Papaschase 1 Reservoir ....................................................................... 105 2.2.16 Papaschase 2 Reservoir ....................................................................... 108 2.2.17 Rosslyn 1 Reservoir .............................................................................. 111 2.2.18 Rosslyn 2 Reservoir .............................................................................. 114 2.2.19 Thorncliff Reservoir ............................................................................... 117 2.2.20 Routine Distribution System Disinfection Byproducts ............................ 120 2.2.21 Raw River Water ................................................................................... 124 2.2.22 Effluent Wastestream to Sanitary Sewer (Plants) .................................. 128 2.2.23 Method Detection Limits ........................................................................ 129 2.2.24 Explanation of Notations Used .............................................................. 133 1.1.1 Operations – Rossdale and E.L. Smith Plants Plant Bypasses The number of bypasses shown on Table 1.2.26 “Rossdale Waste Stream Data” and Table 1.2.27 “E.L. Smith Waste Stream Data” include both planned and unplanned bypasses. A planned bypass is any bypass that is planned a minimum of one day ahead of the actual bypass. All other bypasses are considered unplanned. In July, Rossdale Plant had one planned bypass and no shutdowns. Date Type Bypass Description 17 minute planned plant bypass due to ammonia feed line July 19 Planned switch. In July, E.L. Smith Plant had two unplanned bypasses and no shutdowns. Date Type Bypass Description July 6 Unplanned 40 minute bypass due to power lost to feeder EP-101 July 6 Unplanned 40 minute bypass due to power restored to feeder EP-101 Clarifier Blowdown Volume ♦ The clarifier blowdown volume shown on Table 1.2.26 and Table 1.2.27 include estimated plant leakage. Dechlorination Highlights ♦ During the month of July, there were zero instances of chlorinated waste released at the outfall structure at Rossdale Water Treatment Plant. ♦ During the month of July, there were zero instances of chlorinated waste released at the outfall structure at E.L. Smith Water Treatment Plant. Chemical Dosing Highlights In July, Rossdale and E.L. Smith Water Treatment Plants did not exceed the Maximum Use in the Standard 60, published by the National Sanitation Foundation and the American National Sanitation Standards Institute (NSF/ANSI) for Alum or Caustic Soda. Chemicals Used for the Month CHEMICAL NAME MANUFACTURER Liquid Aluminum Sulfate 48.5% Chemtrade Aqua Ammonia 19% Univar Caustic Soda 50% Chemtrade Fluoride 25% Nutrien Magnafloc LT27AG Solenis Magnafloc LT-7995 Solenis Sodium Hypochlorite 12% Univar Ammonium Sulphate 41% Narchus Alpine Solutions Salt Windsor Sodium Bisulphite 38% Chemtrade 1.1.2 EDMONTON INCIDENT REPORT SUMMARY – July 2021 EPCOR AEP Incident Description Date of Incident Reference Number Number As part of recent routine flushing activities near Stony Plain Road and Connaught Drive, water distribution samples were collected (H1666 and H27088) and brought to the Rossdale Laboratory for regular turnaround testing. Laboratory results indicated detections of BTEX compounds in both pre- and post-flush samples, including MAC exceedances for benzene, resulting in a potential AEP reportable incident within Edmonton’s water distribution system. Health Canada’s Maximum Acceptable Concentration (MAC) for benzene is 5 µg/L and sample results were up to 7.16 µg/L. ENV- Given a MAC was exceeded in the sample, the AEP Action Protocol for Exceedances of Chemical Health Parameters in Drinking Water was 20210726- July 26, 2021 381700 036969 followed and the finding was called into AEP’s EDGE line (AEP Reference # 381700). An internal investigation was completed