Traffic Executive Summary
Extracted text (via pymupdf)
7898 characters
September 24, 2022 Sherri Koshiol, PE Empire Residential Communities Fund IV, LLC 6617 N. Scottsdale Road, Suite 101 Scottsdale, Arizona 85250 Office: (480) 546‐7900 Email: sherri@theempiregroupllc.vom Subject: Traffic Generation Letter – Desert River PAD 2, Northwest Corner of 99th Avenue & Desert River Boulevard – Glendale, Arizona Dear Ms. Koshiol, Y2K Engineering, LLC. (Y2K) has been retained to prepare a Trip Generation Letter for the Desert River Pad 2, a proposed multi‐use development located on the northwest corner of 99th Avenue and Desert River Boulevard in Glendale Arizona. These land uses are planned on approximately 65.6 acres. The site is currently undeveloped. Access to the site will be provided from the Desert River Boulevard and 99th Avenue. The project is planned to provide 708 multifamily dwelling units, a mini‐storage facility, medical OFFICE, hotel, and retail facilities. A traffic impact study (TIS) was previously prepared in July 2020 for the site when land uses were undetermined. This study considered 900 multi‐family dwelling units, medical, hotel, and retail facilities. This study is provided as Attachment A. The site plan has since been refined, resulting in different estimated building footprints and unit counts than the previously prepared TIS. The City of Glendale requires a Trip Generation Letter to compare the estimated traffic impact of the new site. This letter will evaluate the impact of the new development on the existing street system as compared to the previously prepared TIS. A vicinity map is shown in Figure 1, and the proposed site plan is depicted in Figure 2. Figure 1: Project Vicinity Map Alan Heathcoat, P.E. Principal Engineer Glendale Transportation 01/05/2023 3:14:39 PM APPROVED 2 Figure 2: Site Plan and Surrounding Area PROPOSED DEVELOPMENT SITE LOCATION, LAND USE, AND ACCESS The proposed Desert River Pad 2 development will be situated on undeveloped land located south of Northern Avenue along Desert River Boulevard and west of 99th Avenue. The proposed site spans an area of 63.29 acres, and will consist of a multifamily development, a mini storage area, as well as three designated areas each for commercial/retail/office/ hotel use. The multifamily development will consist of 708 dwelling units. The site plan is depicted in Figure 2 and provided in Attachment B. TRIP GENERATION The trip generation for the project was estimated using the Institute of Transportation Engineers’ (ITE) Trip Generation Manual, 11th Edition. ITE’s Trip Generation Manual contains data collected by various transportation professionals for a wide range of different land uses. The data summarized in the manual includes average rates and equations that have been established correlating the relationship between an independent variable that describes the development size and generated trips for each categorized land use. The development consists of multi‐family residential, mini‐warehouse and developments that will serve as commercial/hotel/retail/office space. A Floor‐Area ratio of 0.2 was assumed for the Hotel, Medical 3 Office Building, and Shopping Center, therefore a gross leasable area (GLA) of 103 KSF was assumed to estimate the trips associated with the medical office building, and 140 KSF was assumed for the commercial shopping center. The mini‐storage facility has an estimated building footprint of 45 KSF. Since the previous iteration of the site plan, the multi‐family residential dwelling units decreased to 708 and the hotel decreased to 340 rooms from 400 rooms due to the reduced size of the lot. Table 1 displays the anticipated trip generation for the site. Table 1: Trip Generation – Weekday As summarized in Table 1, the project is anticipated to add a total of 741 new trips (entering and exiting) to the street system during the AM peak hour and 1,437 trips during the PM peak hour. The greatest hourly entering volume occurs during the PM peak hour, when 673 entering trips are anticipated. TRIP GENERATION COMPARISON Traffic analysis was completed for the previous iteration of the site plan in July 2020. The previous site plan is shown in Figure 3. A trip generation comparison was performed to identify the estimated difference in trips added to the network between the updated site plan, and the July 2020 site plan. Trip generation estimates were calculated using the Institute of Transportation Engineers’ (ITE) Trip Generation Manual, 11th Edition. Table 2: Trip Generation Comparison between Residential and Commercial Land Uses Daily ID Land Use ITE LUC Total Enter Exit Total Enter Exit Total 1 Multi‐Family Residential 220 708 DU 4,614 58 184 242 205 120 325 2 Hotel 310 340 Rooms 3,262 91 72 163 114 110 224 3 Medical‐Dental Office Building 720 103 KSF 4,318 195 52 247 125 291 416 4 Shopping Center 820 140 KSF 9,519 134 82 216 345 374 719 5 Mini Storage 151 45 KSF 65 2 2 4 3 4 7 21,778 480 392 872 792 899 1,691 15% 18,511 408 333 741 673 764 1,437 18,511 408 333 741 673 764 1,437 DESCRIPTION OF LAND USE VEHICLE GENERATED TRIPS AM Peak Hour PM Peak Hour SIZE Total Trips with Internal Trip Reduction "New" Trips Added to Street System Daily ID Land Use ITE LUC Total Enter Exit Total Enter Exit Total 1 Multi‐Family Residential 220 900 DU 5,844 72 230 302 257 151 408 2 Hotel 310 400 Rooms 3,912 108 85 193 137 131 268 3 Medical‐Dental Office Building 720 120 KSF 5,048 224 60 284 145 340 485 4 Shopping Center 820 163 KSF 10,120 142 88 230 385 417 802 24,924 546 463 1,009 924 1,039 1,963 15% 21,185 464 394 858 785 883 1,669 21,185 464 394 858 785 883 1,669 18,511 408 333 741 673 764 1,437 Difference ‐2,674 ‐56 ‐61 ‐117 ‐112 ‐119 ‐232 "New" Trips Added to Street System (New Site Plan) VEHICLE GENERATED TRIPS AM Peak Hour PM Peak Hour SIZE "New" Trips Added to Street System (Previous Site Plan) Total Trips with Internal Trip Reduction DESCRIPTION OF LAND USE 4 The traffic generated by the proposed site plan is expected to generate approximately 87.4% of the daily trips estimated from the previous site plan. As such, the proposed site plan is expected to result in less traffic impact than previous analysis indicated, therefore no additional mitigations are expected to be required. Figure 3: July 2020 Site Plan 5 PRINCIPAL FINDINGS AND RECOMMENDATIONS The Desert River Pad 2 is located on currently undeveloped land. Multi‐family residential, medical office, hotel, and retail facilities are proposed on the site. A traffic impact study (TIS) was previously prepared for the site in July 2020 when the exact land uses were less defined. This study considered 900 multi‐family dwelling units, medical, hotel, and retail facilities. The site plan has since been refined, resulting in different estimated building footprints and unit counts than the previously prepared TIS. The refined site plan proposes 708 multifamily dwelling units, a 45 KSF mini‐storage facility, a 103 KSF medical office, a 140 KSF shopping center, and a 340 room hotel. The refined site plan is anticipated to add a total of 741 new trips (entering and exiting) to the street system during the AM peak hour and 1,437 trips during the PM peak hour. The traffic generated by the proposed site plan is expected to generate approximately 87.4% of the daily trips estimated from the previous July 2020 site plan. As such, the proposed site plan is expected to result in less traffic impact than previous analysis indicated, therefore no additional mitigations are expected to be required. Thank you for your time and review of this traffic impact statement. Please let me know if you have any comments or questions. Sincerely, Rae Stephani, PE, PTOE Y2K Engineering, LLC.