c STANDARDS AND GUIDELINES FOR MUNICIPAL WATERWORKS, WASTEWATER AND STORM DRAINAGE SYSTEMS /Iberia ENVIRONMENTAL PROTECTION DECEMBER 1997 Standards and Guidelines Branch Environmental Assessment Division Environmental Service Digitized by the Internet Archive in 2016 https://archive.org/details/standardsguideli00albe_2 22 I9$g CANADlANA More information regarding the Standards and Guidelines for Municipal Waterworks, Wastewater and Storm Drainage Systems may be obtained by contacting the Primary Author: Karu Chinniah Standards and Guidelines Branch Alberta Environmental Protection 6'" floor, 9820- 106 Street Edmonton, Alberta T5K 2J6 tel: (403) 427-8536 fax: (403)422-9714 To obtain additional copies or an electronic version (disc or CD ROM), use the order form in this book or contact Queen’s Printer Bookstore: 11510 Kingsway Avenue McDougall Centre Edmonton, Alberta T5G 2Y5 455 - 6 S treet SW tel: (403) 427-4952 Calgary, Alberta T2P 4E8 fax: (403) 452-0668 tel: (403) 297-6251 fax: (403) 297-8450 e-mail: [email protected] home page: http://www.gov.ab.ca/qp Pub. No.: T/396 ISBN: 0-7785-0088-8 •M. '■*^: k^fTsaS A^0* ^'' r l^, I . -.ijig mif%A #5fimr?fyi "•/ ^ .. t/iV'’ STANDARDS AND GUIDELINES FOR MUNICIPAL WATERWORKS, WASTEWATER AND STORM DRAINAGE SYSTEMS December 1997 TABLE OF CONTENTS Foreword Acknowledgements Definitions/Abbreviations Storm Drainage Systems Under the Environmental Protection and Enhancement Act (EPEA) 1.1 Introduction 1.2 The Environmental Protection and Enhancement Act (EPEA) 1.2.1 History 1 .2.2 New Regulations Under EPEA 1. 2.2.1 Activities Designation Regulation 1 .2.2.2 Potable Water Regulation 1.2. 2. 3 Wastewater and Storm Drainage Regulation 1.2.2. 4 Approvals Procedure Regulation 1.2.2. 5 Environmental Appeal Board Regulation 1 .3 The Approvals Process for Municipal Waterworks, Wastewater and Storm Drainage 1.A0 GuidelinS1ey. s3 t.foe1rm s tE hne v iAr popnlmiceanttiaoln Iamnpda c tA p pArsosveals s moef n Mtusn icipal Waterworks, Wastewater and 1.3.2 Submission of Application 1 .2.3 Review of the Application by the Director 1.3.4 The Public Review Process and the Director's Decision 1 .3.5 Time Required for an Approval 1 .3.6 Form and Duration of the Approval 1.3.7 T ransition Provision for Existing Clean Water Act Approvals 1.3.8 Exemptions - 1 - 2.0 Performance Standards - W aterworks Systems 2. 1 Potable Water Quality 2.2 Minimum Performance Requirements for Treatment Components (Surface Water and Groundwater Subject to Direct Surface Influences) 2.2.1 Rapid Sand Filtration 2.2.2 Slow Sand Filtration 2.2.3 Disinfection 2.2.4 Filtration and Disinfection 2.3 Minimum Performance Requirements for Treatment Components (Groundwater) 2.4 Direct and Indirect Additives 2.5 Fluoridation 3.0 Performance Standards - W astewater Systems 3.1 Treated Effluent Disposal to Surface Water 3.1.1 T reated Effluent Quality 3.1.2 Best Practicable Technology Standards 3.1.3 Receiving Water Quality Based Standards 3.1.4 Disposal Criteria 3.2 Treated Effluent Disposal to Land 4 3.2.1 Wastewater Irrigation 3.2. 1 . 1 Minimum T reatment Requirement 3.2. 1 .2 T reated Effluent Quality Standard 3.2.2 Rapid Infiltration . 3.2.2. 1 Minimum Treatment Requirement 3.2.3 Wetlands Disposal 3.2.3. 1 Minimum Treatment Requirement 1 4.0 Design Standards - W aterworks System (GWI) . - II - 1 Determinatiofo nG W I S o u r c e s 4 . Treatmen1t of Surface Water and Gr oundwater Subject to Direct Surface Influences 4.1.2 Minimum Treatment Requirements 4.1.3 Rapid Sand Filtration 1. Chemical Mixing and Coagulation 2. Flocculation 3. Solids Separation i. Sedimentation ii. Flotation 4. Filtration i. Filtration Rate ii. Filter to Waste iii. Number of Filters 4. 1.3.1 In-Line Filtration 4. 1.3.2 Direct Filtration 4. 1.3. 3 Conventional Filtration 4.1.4 Slow Sand Filtration 4. 1.4.1 Requisite Conditions 1 . Water Quality 2. Community Size 4. 1.4. 2 Filtration 1 . Filtration Rates 2. Filter to Waste 3. Number of Filters 4.1.5 Disinfection 4. 1.5.1 Residual Concentration/Contact Time (CT) Requirements 1 . Required Giardia/Virus Reduction 2. CT Credits 3. Tio Determination 4. Required CT Values 5. Calculation and Reporting of CT Data 6. Additive CT Values 7. Particle Count Or Microscopic Analysis Credits 8. Future CT Requirements 4. 1.5. 2 Chlorination Equipment Requirements 1 . Capacity 2. Methods of Control 3. Standby Provision 4. Weigh Scales 5. Securing Cylinders III - 6. Chlorine Leak Detection 7. Safety Equipment 4. 1.5. 3 Chlorine Room Design Requirements 1. Ventilation 2. Heating 3. Access 4. Storage of Chlorine Cylinders 5. Scrubbers 4. 1.5. 4 Alternate Disinfectants 1. Chlorine Dioxide 2. Ozone 4.2 Groundwater - W ell Development and Construction 4.2.1 Minimum Requirement 4.3 Treatment of Groundwater 4.3.1 Minimum Treatment Requirements 4.3.2 Removal of Fluoride 4.3.3 Disinfection 4.4 Water T reatment Chemicals 4.4.1 Labels and Material Safety Data Sheets 4.4.2 Storage and Handling 4.4.2. 1 General Provisions 4. 4.2. 2 Liquid Chemicals 4.4.2. 3 Dry Chemicals 4.5 Fluoridation 4.5.1 General Requirements 4.5.2 Chemical Feed 4.5.3 Metering 4.5.4 Alternate Compounds 4.5.5 Chemical Storage and Ventilation 4.5.6 Record of Performance 4.5.7 Sampling - IV - 4.5.8 Safety 4.5.9 Repair and Maintenance 4.6 Treatment Plant Waste - H andling and Disposal 4.6.1 Sanitary Wastes 4.6.2 Filter Backwash 5 4.6.3 Sludges 4.6. 3.1 Aluminum Sludge 4.6.3. 2 Lime Sludge 4.6.3. 3 Sludges From Other Coagulants . 4.7 Transmission and Distribution Mains and Reservoirs 4.7.1 Performance Standards 4.7.2 Frost Protection for Mains and Reservoirs 1 4.7.2. 1 Mains 4. 7.2.2 Reservoirs 4.7.3 Cross Connection Controls 4.7.3. 1 Horizontal Separation of Watermains and Sewers . 4. 7. 3.2 Pipe Crossings 4.7. 3. 3 Chambers 4. 7.3. 4 Backflow Prevention and Control 4.7.4 Disinfection of Mains and Reservoirs 1 4. 7.4.1 Mains 4. 7.4.2 Reservoirs 4.7.4. 3 Discharge of Superchlorinated Water 4.8 Health and Safety Act 5.0 Design Standards - W astewater Systems 5.1 Wastewater Collection 5. 1 . 1 . 1 Minimum Pipe Diameter 5. 1.1. 2 Minimum Pipe Slope 5; 1 . 1 .3 Minimum Flow Depths 5.1. 1.4 Solids Deposition S 5.1. 1.5 Alignment a ni 5. 1 . 1 .6 Frost Protection tSa er 5. 1 . 1 .7 Cross Connections yw e r s - V - 5. 1 .2 Wastewater Pump Stations 5. 1 .2. 1 Site Constraints 5.1. 2. 2 Pumps 5. 1 .2.3 Safety Ventilation 1. General 2. Air Inlets and Outlets 3. Electrical Controls 4. Fans, Heating & D ehumidification 5. Wet Wells 6. Dry Wells 7. Monitoring 5. 1.2.4 Separation 5. 1.2. 5 Access 5. 1.2. 6 Water Supply 5 5.1.3 Screens and Grit Removal Facilities . 5. 1 .3. 1 Access and Ventilation 2 5. 1 .4 Health and Safety Act 5.2 Wastewater Treatment and Disposal . 1 5. 2. 1.1 General Requirements 5. 2. 1.2 System Components and Configuration 1. Anaerobic Cells 2. Facultative Cells 3. Storage Cells WastewateLra g oons 5.2. 1.3 23D1 e... s i g nSSF iee ttCneboc ainCcnsokgin ds etDrriaastitinaotnsnc se s 4. Signs 5. Access 6. Surface Runoff 5. 2. 1.4 Seepage Control 1 . Control Criteria 2. Site Selection and Investigations 3. Liner Design 4. Groundwater Monitoring - VI -