505 Preston Street Ottawa, Ontario
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CLARIDGE HOMES (PRESTON) INC. DESIGN BRIEF MIX-USE DEVELOPMENT ICON 505 PRESTON STREET OTTAWA, ONTARIO PROJECT: 31637-5.2.2 MARCH 2014 MAY 2013 MAY 2012 IBI GROUP – PROJECT: 31637-5.2.2 TABLE OF CONTENTS 1. INTRODUCTION ...................................................................................................................... 1 1.1 Development Servicing Study Checklist ............................................................................................. 1 1.2 Purpose .................................................................................................................................................. 1 1.3 Subject Site ............................................................................................................................................ 1 1.4 Pre-Consultation ................................................................................................................................... 1 1.5 Geotechnical Investigation ................................................................................................................... 2 2. WATER SUPPLY ..................................................................................................................... 3 2.1 Existing Conditions ............................................................................................................................... 3 2.2 Design Criteria ....................................................................................................................................... 3 2.3 Hydraulic Analysis ................................................................................................................................ 3 2.4 Proposed Water Plan ............................................................................................................................ 4 3. WASTEWATER DISPOSAL .................................................................................................... 5 3.1 Existing Conditions ............................................................................................................................... 5 3.2 Sewer Capacity Analysis ...................................................................................................................... 5 3.3 Proposed Wastewater Plan .................................................................................................................. 5 4. STORMWATER MANAGEMENT ............................................................................................ 6 4.1 Existing Conditions ............................................................................................................................... 6 4.2 Proposed Stormwater Outlet Plan ....................................................................................................... 6 4.3 Design Criteria ....................................................................................................................................... 6 4.3.1 Maximum Allowable Release Rate ................................................................ 6 4.3.2 Uncontrolled Post-Development Conditions ................................................. 6 4.4 Water Quantity ....................................................................................................................................... 7 4.4.1 Area S1 – Uncontrolled Landscaped Sidewalk Areas ..................................... 7 4.4.2 Area R1 –Mechanical Roof .......................................................................... 7 4.4.3 Area R2 – Penthouse/Mechanical Roof ......................................................... 7 4.4.4 Area T1 – Remaining Roof Top/TERRACE Areas ............................................ 8 4.5 Cistern Storage ...................................................................................................................................... 8 4.6 Stormwater Management Summary .................................................................................................... 8 5. STORMWATER SITE MANAGEMENT ................................................................................... 9 6. APPROVALS AND PERMIT REQUIREMENTS .................................................................... 10 6.1 City of Ottawa ...................................................................................................................................... 10 6.2 Province of Ontario ............................................................................................................................. 10 i 6.3 Conservation Authority ...................................................................................................................... 10 6.4 Federal Government ........................................................................................................................... 10 7. CONCLUSIONS AND RECOMMENDATIONS ...................................................................... 11 7.1 Conclusions ......................................................................................................................................... 11 7.2 Recommendations .............................................................................................................................. 11 APPENDIX A Servicing Study Guideline Checklist APPENDIX B Topographical Survey by Annis, O’Sullivan, Vollebekk Ltd. APPENDIX C City Design Criteria APPENDIX D Watermain Boundary Condition APPENDIX E Sanitary Sewer Design APPENDIX F Stormwater Management Design APPENDIX G Site Servicing Plan and Grading Drawing ii IBI GROUP – PROJECT: 31637-5.2.2 CLARIDGE HOMES (PRESTON) INC. DESIGN BRIEF MIX-USE DEVELOPMENT ICON 505 PRESTON STREET OTTAWA, ONTARIO 1. INTRODUCTION 1.1 Development Servicing Study Checklist The Servicing Study Guideline Checklist is included in Appendix A for reference. The list identifies where elements in this report can be found. Some elements are not applicable and are identified accordingly. Otherwise, the checklist items are address in this report. 1.2 Purpose The purpose of this report is to outline the required municipal services, including water supply, stormwater management and wastewater disposal, needed to support the redevelopment of the subject property. The total property is approximately 0.1646 hectares in area and is located at the north-east corner of the Preston Street and Carling Avenue intersection. See Figure 1 for the site location. As requested by the City of Ottawa this Design Brief is being completed as a requirement and in support of the Site Plan Application for the subject site. 1.3 Subject Site Claridge Homes (Main Street) Inc. has acquired a 0.1646 ha site at 505 Preston Street in Ottawa, with the intention to develop a mixed use high rise building. Figure 2 shows the proposed site plan. The site survey and legal plan is included in Appendix B. In the City’s Official Plan, the subject property is designated “General Urban Area” on Schedule B. In the Comprehensive Zoning By-Law, the site is zoned “AM1 – Arterial Main Street Subzone 1”. The site is currently not in use. It is our understanding that the site was previously occupied by a gas station, which has since been removed. The site currently exists as a flat gravel lot. The proposed mix-use high rise building will consist of 45 storeys. The entrance lobby to the residential portion will be accessed via Carling Avenue. The nine-level underground parking garage and loading area are accessed via Norfolk Avenue. A total of 303 parking spaces are proposed. The ground floor also includes approximately 430 m2 commercial/retail space. Floors 2-3 include approximately 1,695 m2 of commercial space. Hence, the total amount of commercial and retail space proposed is approximately 2,125 m2. The remaining area will include approximately 320 residential units for an approximate area of 19,922 m2. 1.4 Pre-Consultation In March 2012, a pre-consultation meeting was held at the City to discuss the various design constraints and criteria. Appendix C includes correspondence from the City confirming the design criteria for sewer outlets and the water supply analysis. March 2014 MAY 2013 MAY 2012 IBI GROUP PROJECT: 31637-5.2.2 CLARIDGE HOMES (PRESTON) INC. DESIGN BRIEF MIX-USE DEVELOPMENT ICON 505 PRESTON STREET OTTAWA, ONTARIO 1.5 Geotechnical Investigation A geotechnical investigation for the proposed development was prepared by Golder Associates. The report number is 12-1121-0045-2000 dated January, 2014. The objectives of the investigation are: Determination of the subsoil and groundwater conditions. Provision of geotechnical recommendations pertaining to the design and development of the subject site including construction considerations. Among other items, the report will comment on the following: Excavation Shoring. Foundation design. Seismic Design. Infrastructure construction. Groundwater control. Contamination/corrosive environment. March 2014 MAY 2013 MAY 2012 Page 2 IBI GROUP PROJECT: 31637-5.2.2 CLARIDGE HOMES (PRESTON) INC. DESIGN BRIEF MIX-USE DEVELOPMENT ICON 505 PRESTON STREET OTTAWA, ONTARIO 2. WATER SUPPLY 2.1 Existing Conditions A 422 mm diameter ductile iron watermain exists in Preston Street, while 152 mm diameter PVC with a section of 422 mm diameter ductile iron watermains are located in Carling Avenue and Norfolk Avenue. Fire hydrants are in close proximity to the subject site. The two nearest locations are at the north- west corner of the Norfolk Avenue and Carling Avenue intersection and the south-west