Environmental Noise Feasibility Study, Valcoustics Canada Ltd
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VALCOUSTICS CANADA LTD. Muskoka Bay Creekside Subdivision/Gravenhurst – Noise File: 118-0582 Version History Version # Date Comments 1.0 April 2, 2019 Issued to Client 30 Wertheim Court, Unit 25, Richmond Hill Ontario L4B 1B9 Tel: 905-764-5223/Email: [email protected] VALCOUSTICS CANADA LTD. Muskoka Bay Creekside Subdivision/Gravenhurst – Noise File: 118-0582 TABLE OF CONTENTS EXECUTIVE SUMMARY ........................................................................................................... 1 1.0 INTRODUCTION ............................................................................................................. 2 1.1 THE SITE AND SURROUNDING AREA ...................................................................... 2 1.2 THE PROPOSED DEVELOPMENT ............................................................................. 2 2.0 NOISE SOURCES .......................................................................................................... 3 2.1 TRANSPORTATION NOISE SOURCES ..................................................................... 3 2.1.1 Rail Traffic Data .................................................................................................... 3 2.2 STATIONARY NOISE SOURCES ............................................................................... 4 3.0 ENVIRONMENTAL NOISE GUIDELINES ....................................................................... 4 3.1 MECP PUBLICATION NPC-300 .................................................................................. 4 3.1.1 Transportation Noise Sources ............................................................................... 4 3.1.1.1 Architectural Elements ................................................................................... 4 3.1.1.2 Ventilation Requirements ............................................................................... 4 3.1.1.3 Outdoor Living Areas ..................................................................................... 5 3.2 FEDERATION OF CANADIAN MUNICIPALITIES AND RAILWAY ASSOCIATION OF CANADA ......................................................................... 5 4.0 NOISE IMPACT ASSESSMENT...................................................................................... 5 4.1 Analysis Method .......................................................................................................... 5 4.2 Assessment Results .................................................................................................... 6 5.0 NOISE CONTROL REQUIREMENTS ............................................................................. 6 5.1 INDOOR REQUIREMENTS ......................................................................................... 6 5.1.1 Architectural Elements .......................................................................................... 6 5.1.2 Ventilation Requirements ...................................................................................... 7 5.2 OUTDOOR REQUIREMENTS ..................................................................................... 7 5.3 WARNING CLAUSES .................................................................................................. 8 6.0 CONCLUSIONS .............................................................................................................. 8 7.0 REFERENCES ................................................................................................................ 8 …/cont’d 30 Wertheim Court, Unit 25, Richmond Hill Ontario L4B 1B9 Tel: 905-764-5223/Email: [email protected] VALCOUSTICS CANADA LTD. Muskoka Bay Creekside Subdivision/Gravenhurst – Noise File: 118-0582 TABLE OF CONTENTS continued) LIST OF TABLES TABLE 1 RAIL TRAFFIC DATA..……………………….………………………………………...9 TABLE 2 PREDICTED UNMITIGATED SOUND LEVELS OUTDOORS..…………………..10 TABLE 3 NOISE ABATEMENT MEASURES…………………………………………………..11 LIST OF FIGURES FIGURE 1 KEY PLAN FIGURE 2A SITE PLAN FIGURE 2B MINIMUM NOISE CONTROL REQUIREMENTS LIST OF APPENDICES APPENDIX A CONCEPT PLAN DRAWING APPENDIX B TRAFFIC DATA CORRESPONDENCE APPENDIX C ENVIRONMENTAL NOISE GUIDELINES APPENDIX D SAMPLE CALCULATIONS 30 Wertheim Court, Unit 25, Richmond Hill Ontario L4B 1B9 Tel: 905-764-5223/Email: [email protected] VALCOUSTICS CANADA LTD. Muskoka Bay Creekside Subdivision/Gravenhurst – Noise File: 118-0582 Page 1 Environmental Noise Feasibility Study Muskoka Bay Creekside Subdivision Proposed Residential Development Town of Gravenhurst EXECUTIVE SUMMARY Valcoustics Canada Ltd. (VCL) was retained to prepare an Environmental Noise Feasibility Study for a proposed residential development in support of the re-zoning application submission to the Town of Gravenhurst. The proposed development consists of 32 blocks of townhouses (Blocks 1 to 32), and four 4-storey apartment buildings (Apartments 1 to 4). The significant transportation noise source in vicinity is rail traffic along the CN Newmarket Subdivision, east of the subject lands. The sound levels on site have been determined and compared with the applicable Ministry of the Environment, Conservation and Parks (MECP) noise guideline limits to assess the requirements for noise mitigation measures. To meet the applicable transportation noise source guideline limits: • Apartment Buildings 1, 2, and 3 require brick veneer or masonry equivalent exterior walls (STC 54); • Apartment Buildings 1 and 3 require exterior windows with a STC rating of up to 39, and Apartment Building 2 requires exterior windows with a STC rating of up to 37 ; • Townhouse Block 29 to 32 and Apartment 4 require exterior walls with an STC rating of 54. Note that the walls do not need to be brick veneer/masonry equivalent, as they are situated more than 100 mm from the rail right of way; however, STC 54 walls are still required in conjunction with the window requirements noted below. • Apartment 4 requires exterior windows with a STC rating of up to 34 and Townhouse Blocks 29 to 32 require exterior windows with STC ratings of up to STC 31; • With exterior wall constructing meeting the minimum non-acoustical requirements of the OBC (STC 37), Blocks 21, 23 and 24 require exterior windows with STC ratings of up to 28; 30 Wertheim Court, Unit 25, Richmond Hill Ontario L4B 1B9 Tel: 905-764-5223/Email: [email protected] VALCOUSTICS CANADA LTD. Muskoka Bay Creekside Subdivision/Gravenhurst – Noise File: 118-0582 Page 2 • For all other townhouse blocks, exterior wall and window construction meeting the minimum non-acoustical requirements of the OBC are predicted to be sufficient to achieve the MECP indoor noise criteria. • A 1.8 m high sound barrier is required for the rear-yards of Blocks 30 to 32, and the two southernmost OLA’s of Block 29, as shown on Figure 2B. VCL was unable to obtain recent rail traffic count data from CN for the portion of the CN Newmarket Subdivision near the site, so the most applicable rail data from the VCL database was used. The assessment and minimum noise control requirements should be re-evaluated if updated rail data is provided. There are no stationary noise sources in the vicinity that are anticipated to have a significant noise impact at the subject site. 1.0 INTRODUCTION VCL was retained to prepare an Environmental Noise Feasibility Study for the proposed residential development in support of the re-zoning application submission to the Town of Gravenhurst. The potential sound levels and noise mitigation measures needed for the proposed development to comply with the MECP noise guideline requirements are outlined herein. 1.1 THE SITE AND SURROUNDING AREA The proposed development site is located near the southern end of John Street South in the Town of Gravenhurst, and is bounded by: • Existing residential dwellings and woodland, with Ridge Road beyond, to the north; • The CN Newmarket Subdivision, with existing residential and commercial/business uses beyond, to the east; and, • Vacant land/woodland to the south and west. A Key Plan of the study area is included as Figure 1. The study is based on the Development Concept Plan prepared by Weston Consulting having a latest revised date of November 30, 2018. The Concept Plan is provided for reference in Appendix A and is included in part on Figure 2. 1.2 THE PROPOSED DEVELOPMENT The proposed development site spans approximately 22.04 ha. and is split into two phases: • Phase 1 (approximately 4.47 ha): ➢ Four 4-storey apartment buildings with a total of 186 units and one level of underground parking; and, ➢ 11 townhouse blocks with a total of 72 units and additional surface parking; 30 Wertheim Court, Unit 25, Richmond Hill Ontario L4B 1B9 Tel: 905-764-5223/Email: [email protected] VALCOUSTICS CANADA LTD. Muskoka Bay Creekside Subdivision/Gravenhurst – Noise File: 118-0582 Page 3 • Phase 2 (approximately 3.66 ha): ➢ 21 townhouse blocks with a total of 137 units and additional surface parking. Numbers have been added to the apartment buildings (Apartment 1 to Apartment 4) and townhouse blocks (Block 1 to Block 32) for ease of reference, as shown on Figures 2A and 2B. Underground parking will be located within the apartment building envelopes as represented on the Development Concept Plan. VCL understands that the townhouses will be up to 3 storeys in height (by-law allowance of up to 10.5 m height) and will have private rear-yard amenity spaces (outdoor living areas). Details for the four apartment buildings are not yet available with respect to outdoor amenity spaces, balconies and/or terraces, though