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Generic Document Template HERON GATE 7 2816 Sandalwood Drive Traffic Impact Study (TIS) Revised October 2016 | MMM File No. 1416012 Transportation Impact Study | Heron Gate 7 MMM Group Limited | Revised October 2016 | 1416012 ii EXECUTIVE SUMMARY A portion of the Heron Gate Community is planned for redevelopment by Timbercreek. The proposed redevelopment (2816 Sandalwood Drive) will replace 80 garden homes with an approximate 436 residential apartment units on the parcel of land located south of Heron Road and east of Sandalwood Drive, north of the Sandalwood Park and west of Heron Gate Mall. As part of the planning process, MMM Group Limited was retained by Timbercreek to prepare a Transportation Impact Study in accordance with the City of Ottawa’s Transportation Impact Assessment Guidelines. The Traffic Impact Assessment Study is intended to establish the baseline conditions including the existing transportation network adjacent to the study area and undertake a review and analysis of the existing traffic operations at the signalized intersections on Heron and Walkley Roads, the intersections at Sandalwood Drive and Baycrest Drive, as well as the remaining site accesses. In general, during the AM and PM peak hours area intersection operate at LOS A which indicates the existing traffic demands are well accommodated with more than adequate road capacity. Existing trip patterns and characteristics were also reviewed based on the results of the 2011 Origin – Destination Survey. The survey indicates that the study area reported high transit usage with an approximate 30% of area trips being accommodated by transit. Approximately 5% of area trips are accommodated by walking and cycling. The redevelopment of the 80 existing garden homes to provide an approximate 436 residential apartments with a small component of complementary retail space is expected to generate additional net new trips of 119 vehicle trips during the AM peak hour and 134 vehicle trips during the PM peak hour. In addition, the existing transit mode shares of 40% for inbound trips and 30% outbound trips during the AM peak period and 24%/30% (inbound/outbound) during the PM peak period are maintained in the future. The traffic analysis has been undertaken for the 2018 planning horizon and in 2023 which represents five years beyond the opening or occupancy. While the redevelopment is expected to increase traffic to and from the site during the AM and PM peak hour, the area intersections will continue to operate at acceptable LOS and with vehicle delays of approximately 30 seconds or less during the peak hours with the planned site development. The primary supply of on-site parking will be located below grade located primarily and accessed from the circulation roadway. Existing parking demand for adjacent Heron Gate residential units were reviewed to gain a better understanding of parking usage. A review of the parking usage associated with the adjacent Heron Gate Community indicated that the average existing parking demand ratio is 0.76 spaces per unit. The City of Ottawa Parking By-Law was also reviewed and indicated a residential parking rate of 1.2 spaces per unit for the lands located south of Heron Road, while rate of 0.5 spaces per unit for the lands located north side of Heron Road. Based on the observed parking rates of the adjacent community, a review of the Parking Bylaw, the proposed site context and locational factors including transit usage a residential parking rate of 0.80 spaces per unit is considered adequate. As Transportation Impact Study | Heron Gate 7 MMM Group Limited | Revised October 2016 | 1416012 iii such, the proposed 436 residential units would require a total of 351 parking spaces (resulting in a parking rate of 0.80 spaces per unit). October 2016 Update: Revisions to the site plan has resulted in a reduction to the total number of units and parking stalls included within the development (approximately 339 units compared to the original 436 units on-which the TIS is based). The 97 fewer units result in a 20-25% reduction in the site generated vehicle trips. The ITE Trip Generation Manual provides trip making characteristics largely associated with the number of households. A comparison of the impacts of the revised site plan in terms of fewer trips and fewer parking spaces are summarised in Tables 1 and 2 below. Based on reduced number of units proposed in the revised site plan, the detailed calculations associated with the initial site plan have not been updated as the recommendations/impacts identified for the initial site plan will be considered applicable and effectively be more conservative in nature. Table 1 – Revised Site Plan Additional Net Trips AM Peak Hour PM Peak Hour Total Total INBOUND OUTBOUND INBOUND OUTBOUND (future - existing) Trips Trips Revised Site Plan 94 35 59 104 61 43 Original Site Plan 119 41 77 134 78 56 difference -25 -6 -19 -30 -18 -12 % reduction -21% -14% -24% -23% -23% -22% It is noted that the change in the number of planned units as it relates to the parking requirements results in a parking supply of 1.01 spaces per unit. Table 2 – Revised Parking Rates Residences Visitors Total Rate Spaces Rate Spaces Rate Spaces Original Site Plan 436 units 0.72/unit 316 0.08/unit 35 0.80/unit 351 Revised Site Plan 339 units 0.98/unit 332 0.035/unit 12 1.01/unit 344 difference -97 units +16 spaces -23 spaces -7 spaces Additionally, other elements that have changed in the site plan are addressed in this revision to the TIS; notably the inclusion of visitor bicycle parking, car-sharing stalls, and treatments for pedestrian crossings of the internal roadway. Transportation Impact Study | Heron Gate 7 MMM Group Limited | Revised October 2016 | 1416012 iv TABLE OF CONTENTS 1.0 INTRODUCTION ................................................................................ 1 2.0 EXISTING CONDITIONS ................................................................... 3 2.1 Transportation Network and Site Access ...................................................................... 3 2.2 Area Traffic Volumes ....................................................................................................... 5 2.3 Existing Site Trips and Characteristics ......................................................................... 8 2.4 Existing Traffic Operations and Levels of Service ..................................................... 11 3.0 FUTURE CONDITIONS .................................................................... 13 3.1 Background Traffic ........................................................................................................ 13 3.2 Development Plan and Site Access ............................................................................. 16 3.2.1 Proposed Site Plan ................................................................................................. 16 3.2.2 Proposed Site Access ............................................................................................ 16 3.2.3 Future Trip Generation ........................................................................................... 16 3.2.4 Trip Assignment ...................................................................................................... 19 3.3 Future Traffic Volumes .................................................................................................. 22 4.0 TRANSPORTATION ANALYSIS ..................................................... 25 4.1 Future Traffic Operations (2018) ................................................................................... 25 4.2 Future Traffic Operations (2023) ................................................................................... 25 4.3 Vehicle Queues ............................................................................................................... 26 4.4 Non-Auto Modes of Transportation.............................................................................. 27 4.4.1 Transit ..................................................................................................................... 27 4.4.2 Walking and Cycling ............................................................................................... 29 4.5 Travel Demand Management ........................................................................................ 29 4.6 On-Site Circulation and Parking ................................................................................... 30 5.0 CONCLUSIONS ............................................................................... 34 Transportation Impact Study | Heron Gate 7 MMM Group Limited | Revised October 2016 | 1416012 v APPENDICES Appendix A – Site Plan Appendix B – Site Generated Traffic Appendix C – Signalized Intersection Traffic Analysis (Synchro 8) Appendix D – Unsignalized Intersection Traffic Analysis (Sidra 6.0) Appendix E – Collision History Appendix F – Traffic Impact Study (TIS) Checklist Transportation Impact Study | Heron Gate 7 MMM Group Limited | Revised October 2016 | 1416012 vi Transportation Impact Study for Heron Gate 7 October 2016 MMM GROUP LIMITED PROJECT TEAM Ian Borsuk, P. Eng. Don Stephens, P. Eng. Senior Project Engineer Discipline Lead, Transportation Planning Transportation Planning Ontario and Atlantic Canada Transportation Impact Study I Heron Gate 7 MMM Group Limited I October 2016 I 1416012 Transportation Impact Study | Heron Gate 7 MMM Group Limited | Revised October 2016 | 1416012 viii 1.0 INTRODUCTION Timbercreek is planning to redevelop a portion of the Heron Gate residential community.
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