Atlantic Canada Guidelines for Drinking Water Supply Systems
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Water SupplySystems Storage, Distribution Atlant i c Canada Guidelines , andOperationof Atlantic Canada Guidelines for the Supply, for Treatment, Storage, t h Distribution, and e Supply, Operation of Drinking Water Supply Systems Dr i Treatment, n king September 2004 Prepared by: Coordinated by the Atlantic Canada Water Works Association (ACWWA) in association with the four Atlantic Canada Provinces WATER SYSTEM DESIGN GUIDELINE MANUAL PURPOSE AND USE OF MANUAL Page 1 PURPOSE AND USE OF MANUAL Purpose The purpose of the Atlantic Canada Guidelines for the Supply, Treatment, Storage, Distribution and Operation of Drinking Water Supply Systems is to provide a guide for the development of water supply projects in Atlantic Canada. The document is intended to serve as a guide in the evaluation of water supplies, and for the design and preparation of plans and specifications for projects. The document will suggest limiting values for items upon which an evaluation of such plans and specifications may be made by the regulator, and will establish, as far is practical, uniformity of practice. The document should be considered to be a companion to the Atlantic Canada Standards and Guidelines Manual for the Collection, Treatment and Disposal of Sanitary Sewage. Limitations Users of the Manual are advised that requirements for specific issues such as filtration, equipment redundancy, and disinfection are not uniform among the Atlantic Canada provinces, and that the appropriate regulator should be contacted prior to, or during, an investigation to discuss specific key requirements. Approval Process Chapter 1 of the Manual provides an overview of the approval process generally used by the regulators. Proponents are advised, however, to familiarize themselves with the requirements of all legislation dealing with water supply projects in the province where the work is to be undertaken. The respective provincial legislation, guidelines, and/or contacts may be accessed as follows: New Brunswick Department of the Environment and Local Government: Director Stewardship Branch NB Department of Environment & Local Government 20 McGloin Street Fredericton, NB E3A 5T8 (506) 453-7945 (phone) (506) 453-2390 (fax) Atlantic Canada Guidelines for the Supply, Treatment, Storage, Distribution and Operation of Drinking Water Supply Systems September 2004 WATER SYSTEM DESIGN GUIDELINE MANUAL PURPOSE AND USE OF MANUAL Page 2 Newfoundland and Labrador Department of Environment and Conservation: Manger Community Water and Wastewater Section Water Resources Management Division PO Box 8700 St. John’s, NL A1B 4J6 Contact 709-729-2535 Fax: 709-729-0320 Nova Scotia Department of Environment and Labour: Water and Wastewater Branch 5151 Terminal Road, 5th Floor, PO Box 697 Halifax, NS B3J 2T8 Contact 902-424-5300 Fax: 902-424-0503 Prince Edward Island Department of Environment and Energy: Water Management 11 Kent St., PO Box 2000 Charlottetown, PEI C1A 7N8 Contact 902-368-5000 Fax: 902-368-5830 Innovation The Manual should be used as a guide, and therefore is not intended to limit innovation on the part of proponents. Where the designer can show that alternate approaches can produce the desirable results, such approaches may be considered for approval. Definition of Terms The terms used in the manual reflect generally used definitions in the water industry. Users of the Manual are referred to the American Water Works Association (AWWA) “Drinking Water Dictionary” for a comprehensive definition of water related terms. Policy/Position Papers There are a wide range of issues which must be dealt with in the upgrading of existing water systems or the implementation of new systems. Not all of these issues are easily categorized and addressed as a guideline. In some cases technical aspects of the issues are still emerging, while others may require greater discussion regarding the context in which they may be used or dealt with. AWWA and the Canadian Water and Wastewater Association (CWWA) have developed policy/position papers that reflect the current state of knowledge, experience and best practices on a variety of topics. Users of the Manual are encouraged to review AWWA and CWWA policy/position papers at the following: Atlantic Canada Guidelines for the Supply, Treatment, Storage, Distribution and Operation of Drinking Water Supply Systems September 2004 WATER SYSTEM DESIGN GUIDELINE MANUAL PURPOSE AND USE OF MANUAL Page 3 AWWA: http://www.awwa.org/about/oandc/officialdocs/AWWASTAT.cfm http://www.awwa.org/Advocacy/govtaff/govpol.cfm CWWA: http://www.cwwa.ca/policy_e.asp http://www.cwwa.ca/position_e.asp Reference Material In developing the Manual, material from outside sources was reviewed, and guidelines appropriate for conditions in Atlantic Canada were adopted. In some cases, multiple sources are referenced in the Manual, pending responses from the industry A list of references used is attached as Appendix A. Feedback The development of the Atlantic Canada Guidelines for the Supply, Treatment, Storage, Distribution and Operation of Drinking Water Supply Systems was coordinated by the Atlantic Canada Water Works Association (ACWWA), in coordination with the four Atlantic Canada provinces. The document was developed under contract by a team of qualified engineers and hydrogeologists with substantial experience in Atlantic Canada, supported by a review committee consisting of representatives from the provincial departments and two utilities. The committee members include: Herb Card, NL Dept. of Environment and Conservation Morley Foy, P.E.I. Dept of Environment and Energy Serge Theriault, NB Dept. of Environment &Local Government Andre Chenard, NB Dept. of Environment &Local Government John Eisnor, NS Dept. of Environment & Labour Ensor Nicholson, City of Moncton Tom Gorman, Halifax Regional Water Commission Jamie Hannam, Halifax Regional Water Commission, Chair The document is distributed as a “first edition” with ACWWA co-ordinating a review after a period of initial use. Atlantic Canada Guidelines for the Supply, Treatment, Storage, Distribution and Operation of Drinking Water Supply Systems September 2004 WATER SYSTEM DESIGN GUIDELINE MANUAL PURPOSE AND USE OF MANUAL Page 4 Conflicts Conflicting statements may have survived the review process. Should conflicting statements be found, readers are directed to contact the regulatory authority for the appropriate jurisdiction for clarification. Comments Comments on the documents should be forwarded to the following: Jamie Hannam, P. Eng. ACWWA Chair, Water Supply Manual Review Committee c/o Halifax Regional Water Commission Box 8388, Sta. A Halifax, NS B3K 5M1 Direct: 902-490-4804 Fax: 902-490-4808 Email: [email protected] Atlantic Canada Guidelines for the Supply, Treatment, Storage, Distribution and Operation of Drinking Water Supply Systems September 2004 WATER SYSTEM DESIGN GUIDELINE MANUAL TABLE OF CONTENTS Page 1 CHAPTER 1.0 APPROVAL REQUIREMENTS AND PROCEDURES ........................................ 1-1 1.1 GENERAL OVERVIEW OF APPROVALS.........................................................1-1 1.1.1 Summary of Approval Process .............................................................................. 1-1 1.1.2 Review by Other Jurisdictions ............................................................................. 1-4 1.2 OUTLINE OF APPROVAL PROCESS ..............................................................1-4 1.2.1 Pre-Consultation ......................................................................................................... 1-4 1.2.2 Pre-Design (Technical) Report .............................................................................. 1-4 1.2.2.1 Purpose of a Pre-Design Report ............................................................. 1-4 1.2.2.2 Contents of a Pre-Design Report............................................................ 1-6 1.2.2.3 Key Components of a Pre-Design Evaluation .................................. 1-11 1.2.2.3.1 Future Population and Commercial/Industrial Uses.. 1- 11 1.2.2.3.2 Water Demand Projections ............................................. 1-11 1.2.2.3.3 Design Criteria.................................................................... 1-12 1.2.2.3.4 Site Selection of Treatment Facility ............................. 1-12 1.2.2.3.5 Conceptual Layout of Treatment Plant....................... 1-12 1.2.2.3.6 Ancillary Equipment and Infrastructure.................... 1-13 1.2.2.3.7 Route Selection of Transmission Mains ..................... 1-13 1.2.2.3.8 Site Selection of Water Storage Reservoirs................ 1-13 1.2.2.3.9 Cost Estimates and Financing ...................................... 1-14 1.2.3 Review of Pre-Design Report............................................................................... 1-15 1.2.4 Acceptance of Pre-Design Report...................................................................... 1-15 1.2.5 Detailed Design Submission ................................................................................ 1-15 1.2.5.1 General......................................................................................................... 1-15 1.2.5.2 Plans ............................................................................................................. 1-16 1.2.5.3 Technical Specifications ......................................................................... 1-18 1.2.5.4 Design Brief ................................................................................................ 1-18 1.2.5.4.1 General Information.........................................................