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520 Kirkland Way, Suite 100, Kirkland, WA 98033
(425) 889-6747 www.tenw.com
MEMORANDUM
DATE: January 31, 2025
TO: Michael Sippo
City of Renton
FROM: Amy Wasserman / Chris Forster, P.E.
TENW
SUBJECT: Trip Generation and EIS Traffic Analysis Scoping
Longacres Master Plan
TENW Project No. 2022-332
This memorandum summarizes the preliminary traffic information for the Longacres Master Plan project
in Renton for the purpose of establishing a scope of work for the transportation section of the
Environmental Impact Statement (EIS) that will be prepared for the master plan project. This
memorandum includes a project description, trip generation estimates, and a summary of transportation
scope items for discussion. Upon your review of the information presented in this memorandum, we
would like to meet to discuss a preliminary transportation scope of work for the EIS traffic analysis, with
the understanding that the specific scope elements will be further defined with the public scoping process
that is required as part of the EIS preparation.
Project Description
The Longacres Master Plan project site was previously referred to as the Longacres Office Park (“LOP”)
property and is comprised of approximately 108 acres primarily located south of I-405 and west of
Oakesdale Ave SW although the site also includes some parcels on the east side of Oakesdale Ave SW. A
vicinity map of the Longacres Master Plan site is included in Attachment A.
The majority of the existing Longacres Master Plan site is vacant. The existing uses on the site include an
office building (the 25-20 building located south of Longacres Way, a portion of which serves as the
Sounders FC Headquarters), a day care center (on the east side of Oakesdale Ave SW), the Sounders FC
soccer fields, and two industrial buildings located north of SW 16th Street. All of the existing uses are
proposed to remain with the Longacres Master Plan project except for the day care center. It should also
be noted that the existing office building located south of SW 16th Street and west of Oakesdale Ave SW
(the 25-01 building) is owned by a different entity and is therefore excluded from the Longacres Master
Plan project.
The Longacres Master Plan project will be developed in multiple phases with project buildout expected by
2040. The EIS is expected to evaluate three land use alternatives as summarized in Table 1.
Trip Generation and EIS Traffic Analysis Scoping
Longacres Master Plan (Renton,WA)
January 31, 2025
Page 2
Table 1
Land Use Summary by EIS Alternative
Land Use
Proposed New Land Use 1
EIS Alternative 1
(No Action Scenario)
EIS Alternative 2
(Preferred Development
Scenario)
EIS Alternative 3
(Maximum
Development
Scenario)
Multifamily Apartments -- 2,150 DU 2,350 DU
Townhouses -- 285 DU 250 DU
Assisted Living -- 235 DU 235 DU
Retail (with Supermarket) -- 100,000 SF 120,000 SF
Hotel -- 400 rooms 400 rooms
General Office 1,400,000 SF 1,170,000 SF 1,930,000 SF
Medical Office -- 275,000 SF 460,000 SF
Research & Development
(R&D) --
180,000 SF
180,000 SF
Light Industrial 60,000 SF 60,000 SF
Outdoor Music Venue 8,000 seats 8,000 seats
1) Does not include existing office (311,982 SF) in building 25-20, existing Sounders FC fields, and existing industrial use to remain
in Master Plan area.
2) DU = Dwelling Unit, SF = Square Feet
Vehicular access to the Longacres Master Plan site for all three EIS alternatives would continue to be
provided via the public roadways of SW 16th Street and Oakesdale Ave SW. The existing private Longacres
Drive SW and other new internal private roadways (including a new roadway at the southern parcel line
adjacent to the Kaiser Permanente site) would also provide access to/from the site. Preliminary site plans
and massing summaries for the three EIS Alternatives are included in Attachment B.
Project Trip Generation
In order to develop a preliminary scope of work for the Longacres Master Plan EIS traffic analysis, trip
generation for the Longacres Master Plan project was estimated for EIS Alternative 2 (preferred
development scenario) and EIS Alternative 3 (maximum development scenario). The trip generation
estimates were based on methodology documented in the Institute of Transportation Engineers (ITE) Trip
Generation Manual, 11th Edition for the following land use codes (LUCs):
· LUC 221 – Multifamily Housing (Mid-Rise), close to rail transit
· LUC 215 - Single-Family Attached Housing
· LUC 254 – Assisted Living
· LUC 821 – Shopping Plaza (40-150k), with Supermarket
· LUC 310 – Hotel
· LUC 710 – General Office Building
· LUC 720 – Medical-Dental Office Building (stand-alone)
· LUC 760 – Research and Development Center
· LUC 110 – General Light Industrial
Trip Generation and EIS Traffic Analysis Scoping
Longacres Master Plan (Renton,WA)
January 31, 2025
Page 3
It should be noted that the outdoor music venue in the Longacres Master Plan site is anticipated to host
approximately 48 events per year from May through September as follows:
· May – 2 weekday events, 2 weekend events
· June – 8 weekday events, 4 weekend events
· July – 8 weekday events, 4 weekend events
· August – 8 weekday events, 4 weekend events
· September – 4 weekday events, 4 weekend events
Since the music venue events are anticipated to occur up to 3 days a week for 5 months of the year and
would occur during non-peak hours (weekday evenings from approximately 7 PM to midnight and on
weekends), it is assumed that impacts associated with the music venue will be analyzed and managed
through the establishment of a Transportation Management Plan (TMP) and Parking Management Plan
(PMP).
Adjustments to the total trip generation estimates were made to account for local mode-split data, internal
trips, and pass-by trips.
Mode split and average vehicle occupancy (AVO) data used in the trip generation estimates to convert ITE
vehicular trips to baseline ITE person trips was based on data included in Chapter 7 (Trip Generation for
Urban Infill/Redevelopment) of the ITE Trip Generation Handbook, 3rd Edition, September 2017. Local
mode-split and AVO adjustments were then applied to the ITE person trip estimates to reflect the
Longacres Master Plan site’s location adjacent to the Tukwila commuter rail station and other nearby bus
transit stops. The local mode-split and AVO assumptions were developed based on a review of our
previous work on this site (Boeing Longacres Office Park Master Plan Update Transportation Study, September
2000, TENW), a review of City of Renton planning documents (Comprehensive Plan, Transportation Impact
Fee Rate Study), and recent studies of mode-split and AVO data used by other comparable jurisdictions
(City of Bellevue Mobility Implementation Plan).
Internal Trips are made by people making multiple stops within a development without generating new
trips onto the adjacent street system. The internal trip adjustments were based on the methodology
established in the ITE Trip Generation Handbook, 3rd Edition (2017). It should be noted that because this is
a Master Plan for the entire Longacres site, internal trip calculations were based on the total future site
development (proposed new land use plus existing land use to remain).
Pass-by Trips are trips that are made by vehicles that are already on the adjacent streets and make
intermediate stops at the retail uses on route to a primary destination (i.e. on the way from work to home).
The pass-by trips estimated in the trip generation calculations were based on studies included in the
appendices of the ITE Trip Generation Manual, 11th Edition (2021).
The resulting net new weekday daily, AM peak hour, and PM peak hour trip generation estimates for EIS
Alternatives 2 and 3 of the proposed Longacres Master Plan project are summarized in Table 2 and reflect
the adjustments for mode-split, internal trip capture, and pass-by trips. The detailed trip generation
estimates are included in Attachment C. Although not critical to EIS scoping, the detailed trip generation
estimates for Alternative 1 (No Action) have also been included in Attachment C.
Trip Generation and EIS Traffic Analysis Scoping
Longacres Master Plan (Renton,WA)
January 31, 2025
Page 4
Table 2
Trip Generation Summary for EIS Alternatives 2 and 3
Weekday Time Period
Net New Trips Generated
EIS Alternative 2
(Preferred Development Scenario)
EIS Alternative 3
(Maximum Development Scenario)
In Out Total In Out Total
Daily 11,057 11,058 22,115 14,716 14,715 29,431
AM Peak Hour 1,268 410 1,678 1,839 514 2,353
PM Peak Hour 678 1,412 2,090 895 2,062 2,957
Project Trip Distribution
The anticipated distribution of net new peak hour trips generated by the Longacres Master Plan project
was estimated based on previously approved projects in the study area and existing and anticipated travel
patterns. The estimated peak hour project trip distribution is illustrated in Attachment D.
Study Intersections
Based on the preliminary trip distribution shown in Attachment D, the following intersections are
proposed as study intersections for the EIS Traffic Analysis (see also Attachment D):
1. Monster Rd SW / Oakesdale Ave SW (stop-control)
2. Oakesdale Ave SW / SW 7th Street (signal)
3. Interurban Ave S / SW Grady Way (signal)
4. Interurban Ave S / S 156th Street / I-405 NB Ramps (signal)
5. Interurban Ave S / Longacres Way (signal)
6. Interurban Ave S / Strander Blvd (signal)
7. Jackson Pl SW / Longacres Dr SW (stop-control)
8. Longacres Dr SW / SW 16th Street (stop-control)
9. Longacres Dr SW / North-South Access Road (stop-control)
10. Longacres Dr SW / SW Grady Way (stop-control)
11. Oakesdale Ave SW / SW Grady Way (signal)
12. Lind Ave SW / SW Grady Way (signal)
13. Oakesdale Ave SW / SW 16th Street (signal)
14. Lind Ave SW / SW 16th Street (signal)
15. Oakesdale Ave SW / Longacres Way (signal)
16. Oakesdale Ave SW / SW 20th Street (signal)
17. Oakesdale Ave SW / SW 27th Street (signal)
18. Oakesdale Ave SW / SW 34th Street (stop-control)
19. Oakesdale Ave SW / SW 41st Street (stop-control)
20. Oakesdale Ave SW / SW 43rd Street / S 180th Street (signal)
Trip Generation and EIS Traffic Analysis Scoping
Longacres Master Plan (Renton,WA)
January 31, 2025
Page 5
EIS Traffic Analysis Scope
Upon your review of the information presented in this memorandum, we would like to discuss and confirm
a preliminary scope of work for the Longacres Master Plan EIS traffic analysis, including but not limited to
the following:
· Future Analysis Year of 2040
· Analysis Time Periods
o AM Peak Hour (single highest hour between 6-9 AM)
o PM Peak Hour (single highest hour between 3-6 PM)
· Project trip generation estimates for EIS Alternative 2 and EIS Alternative 3 including mode-split
and AVO assumptions.
· Project trip distribution
· Study intersections
· Development of Future Year Traffic Volumes
o Approach 1: Background annual growth rate + pipeline projects
o Approach 2: Use of Model forecasts (if warranted and/or available)
o Any other items to be included in the EIS traffic analysis
Please contact me at (425) 466-7072 or amy@tenw.com with any questions.
cc: Nathan Janders, City of Renton
Julia Reeve, Unico
Attachments
ATTACHMENT A
Vicinity Map
ATTACHMENT B
EIS Site Plans and Massing Summaries
LONGACRES
MASTER PLAN
Massing Update
January 23, 2025
1/23/2025 Unico Longacres Master Plan
ASSUMPTIONS
Vehicle Parking Ratios Bike Parking Ratios
Program Net/Gross Efficiency Unit Size Code Proposed Units Code Proposed Units
Retail 80%2.5 2 1,000 NSF 10%10%Vehicle Spaces Required
F&B 80%*2.5 2 1,000 NSF 10%10%Vehicle Spaces Required
Office 95%**2 1.5 1,000 NSF 10%10%Vehicle Spaces Required
Medical Office 95%**5 4 1,000 NSF 10%10%Vehicle Spaces Required
Multifamily 85%***850 1 0.9 DU 0.5 0.5 DU
Townhomes 100%900 1 1 DU 0.5 0.5 DU
Assisted Living 70%500 1 0.5 DU 0.5 0.5 DU
Hotel 85%***478 1.05 0.75 Room *10%10%Vehicle Spaces Required
Venue 60%10 8 1,000 NSF **10%10%Vehicle Spaces Required
Industrial 90%1 0.9 1,000 NSF 10%10%Vehicle Spaces Required
Parking 85%325
*F&B parking is based on "commercial within vertical mixed use developments."*Hotel is 1/room + parking for employees. Using an additional 0.05 as an estimate of employee parking.
**Core and lobby area is counted separately.**Venue is 10/1,000 SF for the main auditorium space only, or 1/4 fixed seats, whichever is greater.
***Lobby area is counted separately.
1/23/2025 Unico Longacres Master Plan
ALT 1 | UPDATED MASSING
1/23/2025 Unico Longacres Master Plan
ALT 1 | UPDATED PLAN
Alaska Property –
Shown for Context
Existing
Sounders Fields
to Remain
1/23/2025 Unico Longacres Master Plan
ALT 1 | UPDATED METRICS
1/23/2025 Unico Longacres Master Plan
ALT 2 | UPDATED MASSING
1/23/2025 Unico Longacres Master Plan
ALT 2 | UPDATED PLAN
Alaska Property –
Shown for Context
Existing
Sounders Fields
to Remain
1/23/2025 Unico Longacres Master Plan
ALT 2 | UPDATED METRICS
1/23/2025 Unico Longacres Master Plan
ALT 3 | UPDATED MASSING
1/23/2025 Unico Longacres Master Plan
ALT 3 | UPDATED PLAN
Alaska Property –
Shown for Context
Existing
Sounders Fields
to Remain
1/23/2025 Unico Longacres Master Plan
ALT 3 | UPDATED METRICS
ATTACHMENT C
Trip Generation Calculations
EIS Alternative 1
Local Data7 Local Data7
Land Use Area Units 1 LUC 2 Trip Rate or Equation2 In Out In Out Total
Vehicle
Mode-Split AVO In Out Total In Out Total In Out Total
Vehicle
Mode-Split In Out Total AVO In Out Total
PROPOSED USES:
General Office Building 1,400,000 GFA 710 Ln(T) = 0.87Ln(X) + 3.05 50%50%5,764 5,763 11,527 95.3%1.08 6,531 6,532 13,063 ------65%4,245 4,246 8,491 1.20 3,538 3,538 7,076
Music Venue 8 8,000 Seats --50%50%----------------0 0 0
EXISTING USE TO REMAIN (NOT CURRENTLY OCCUPIED):
General Office Building 258,992 GFA 710 Ln(T) = 0.87Ln(X) + 3.05 50%50%1,328 1,328 2,656 95.3%1.08 1,505 1,505 3,010 ------65%978 979 1,957 1.20 815 816 1,631
EXISTING USE TO REMAIN (CURRENTLY OCCUPIED)
Office (Sounders)52,990
408 407 815 100%1.08 440 440 880 ------100%440 440 880 1.00 440 440 880
EXISTING USE TO BE REMOVED
Day Care Center 21,083 GFA 565 47.62 50%50%502 502 1,004 -----------------502 -502 -1,004
Proposed Weekday Daily Trips Less Internal Trips =4,793 4,794 9,587
Less Existing Uses to be Removed =-502 -502 -1,004
Net Proposed Weekday Daily Trips = 4,291 4,292 8,583
Less Existing Trips = -1,255 -1,256 -2,511
Net New Weekday Daily Trips = 3,036 3,036 6,072
Notes:
1 GFA is Gross Floor Area, GLA is Gross Leasable Area, DU is Dwelling Unit.
2 Institute of Transportation Engineers, Trip Generation Manual, 11th Edition (2021) Land Use Codes.
3 Baseline Mode-Split and AVO based on the ITE Trip Generation Handbook, 3rd Edition, 2017, Appendix B.
4 ITE Person Trips is equal to Base ITE Vehicle Trip Generation multiplied by AVO divided by Vehicle Mode-Split
5 Internal trip reductions based on methodology documented in the ITE Trip Generation Handbook, 3rd Edition, 2017.
6 Passby percent based on the Institute of Transportation Engineers, Trip Generation Manual, 11th Edition (2021).
7 Local mode-split and AVO adjustments based on prior Boeing Longacres Office Park (LOP) EIS analysis, City of Renton Comprehensive Plan Transportation Impact Fee Rate Study, and City of Bellevue Mobility Implementation Plan.
8 Activites Based Trip Generation
from Sounders Trip Generation Assessment
Longacres Master Plan - EIS Alternative 1
Weekday Daily Trip Generation
Vehicle Trip GenerationDirectional Distribution Vehicle Trip Generation Baseline Data
3 ITE Person Trips4 Internal Person Trips5 External Person Trips5 Person Trips by Vehicle
Local Data7 Local Data7
Land Use Area Units 1 LUC 2 Trip Rate or Equation2 In Out In Out Total
Vehicle
Mode-Split AVO In Out Total In Out Total In Out Total
Vehicle
Mode-Split In Out Total AVO In Out Total
PROPOSED USES:
General Office Building 1,400,000 GFA 710 Ln(T) = 0.86Ln(X) + 1.16 88%12%1,426 194 1,620 93.5%1.06 1,617 220 1,837 ------65.0%1,051 143 1,194 1.20 876 119 995
Music Venue 8 8,000 Seats ----0 0 0 - ----------- - - - - 0 0 0
EXISTING USE TO REMAIN (NOT CURRENTLY OCCUPIED):
General Office Building 258,992 GFA 710 Ln(T) = 0.86Ln(X) + 1.16 88%12%334 45 379 93.5%1.06 379 51 430 ------65.0%246 34 280 1.20 205 28 233
EXISTING USE TO REMAIN (CURRENTLY OCCUPIED)
Office (Sounders)52,990
83 5 88 100.0%1.06 88 5 93 ------100.0%88 5 93 1.00 88 5 93
EXISTING USE TO BE REMOVED
Day Care Center 21,083 GFA 565 11.00 53%47%123 109 232 - ----------- - - - - -123 -109 -232
Gross Proposed AM Peak Hour Trips Less Total Internal Trips =1,169 152 1,321
Less Existing Uses to be Removed =-123 -109 -232
Net Proposed Weekday AM Peak Hour Trips = 1,046 43 1,089
Less Existing Trips = -293 -33 -326
Net New Weekday AM Peak Hour Trips = 753 10 763
Notes:
1 GFA is Gross Floor Area, GLA is Gross Leasable Area, DU is Dwelling Unit.
2 Institute of Transportation Engineers, Trip Generation Manual, 11th Edition (2021) Land Use Codes.
3 Baseline Mode-Split and AVO based on the ITE Trip Generation Handbook, 3rd Edition, 2017, Appendix B.
4 ITE Person Trips is equal to Base ITE Vehicle Trip Generation multiplied by AVO divided by Vehicle Mode-Split
5 Internal trip reductions based on methodology documented in the ITE Trip Generation Handbook, 3rd Edition, 2017.
6 Passby percent based on the Institute of Transportation Engineers, Trip Generation Manual, 11th Edition (2021).
7 Local mode-split and AVO adjustments based on prior Boeing Longacres Office Park (LOP) EIS analysis, City of Renton Comprehensive Plan Transportation Impact Fee Rate Study, and City of Bellevue Mobility Implementation Plan.
8 Activites Based Trip Generation
Longacres Master Plan - EIS Alternative 1
from Sounders Trip Generation Assessment
AM Peak Hour Trip Generation
Vehicle Trip GenerationDirectional Distribution Base ITE Vehicle Trip Generation Baseline Data
3 ITE Person Trips4 Internal Person Trips5 External Person Trips5 Person Trips by Vehicle
Local Data7 Local Data7
Land Use Area Units 1 LUC 2 Trip Rate or Equation2 In Out In Out Total
Vehicle
Mode-Split AVO In Out Total In Out Total In Out Total
Vehicle
Mode-Split In Out Total AVO In Out Total
PROPOSED USES:
General Office Building 1,400,000 GFA 710 Ln(T) = 0.83Ln(X) + 1.29 17%83%252 1,232 1,484 97.0%1.09 283 1,384 1,667 ------65.0%184 900 1,084 1.20 153 750 903
Music Venue 8 8,000 Seats --------------------0 0 0
EXISTING USE TO REMAIN (NOT CURRENTLY OCCUPIED):
General Office Building 258,992 GFA 710 Ln(T) = 0.83Ln(X) + 1.29 17%83%62 304 366 97.0%1.09 70 342 412 ------65.0%46 222 268 1.20 38 185 223
EXISTING USE TO REMAIN (CURRENTLY OCCUPIED)
Office (Sounders)52,990
73 39 112 100.0%1.00 73 39 112 ------100.0%73 39 112 1.00 73 39 112
EXISTING USE TO BE REMOVED
Day Care Center 21,083 GFA 565 11.12 47%53%110 124 234 -----------------110 -124 -234
Proposed PM Peak Hour Trips Less Internal Trips =264 974 1,238
Less Existing Uses to be Removed = -110 -124 -234
Net Proposed Weekday PM Peak Hour Trips = 154 850 1,004
Less Existing Trips = -111 -224 -335
Net New Weekday PM Peak Hour Trips = 43 626 669
Notes:
1 GFA is Gross Floor Area, GLA is Gross Leasable Area, DU is Dwelling Unit.
2 Institute of Transportation Engineers, Trip Generation Manual, 11th Edition (2021) Land Use Codes.
3 Baseline Mode-Split and AVO based on the ITE Trip Generation Handbook, 3rd Edition, 2017, Appendix B.
4 ITE Person Trips is equal to Base ITE Vehicle Trip Generation multiplied by AVO divided by Vehicle Mode-Split.
5 Internal trip reductions based on methodology documented in the ITE Trip Generation Handbook, 3rd Edition, 2017.
6 Passby percent based on the Institute of Transportation Engineers, Trip Generation Manual, 11th Edition (2021).
7 Local mode-split and AVO adjustments based on prior Boeing Longacres Office Park (LOP) EIS analysis, City of Renton Comprehensive Plan Transportation Impact Fee Rate Study, and City of Bellevue Mobility Implementation Plan.
8 Activites Based Trip Generation
Longacres Master Plan - EIS Alternative 1
from Sounders Trip Generation Assessment
PM Peak Hour Trip Generation
Total Vehicle Trip GenerationDirectional Distribution Base ITE Vehicle Trip Generation Baseline Data
3 ITE Person Trips4 Internal Person Trips5 External Person Trips5 Person Trips by Vehicle
EIS Alternative 2
Local Data7 Local Data7
Land Use Area Units 1 LUC 2 Trip Rate or Equation2 In Out In Out Total
Vehicle
Mode-Split AVO In Out Total In Out Total In Out Total
Vehicle
Mode-Split In Out Total AVO In Out Total
PROPOSED USES:
Multifamily Housing (Mid-Rise)2,150 DU 221 4.75 50%50%5,106 5,107 10,213 94.3%1.15 6,227 6,228 12,455 972 972 1,944 5,255 5,256 10,511 65%3,416 3,416 6,832 1.40 2,440 2,440 4,880
Single-Family Attached Housing 285 DU 215 T = 7.62(X) - 50.48 50%50%1,060 1,061 2,121 94.3%1.15 1,293 1,294 2,587 202 202 404 1,092 1,091 2,183 65%710 709 1,419 1.40 507 507 1,014
Assisted Living 235 Beds 254 2.6 50%50%305 306 611 94.3%1.15 373 372 745 58 58 116 315 314 629 85%268 267 535 1.40 191 191 382
Shopping Plaza (40-150k) with Supermarket 100,000 GLA 821 94.49 50%50%4,725 4,724 9,449 100.0%1.19 5,622 5,622 11,244 2,136 2,137 4,273 3,486 3,485 6,971 80%2,789 2,788 5,577 1.40 1,992 1,992 3,984
Passby Trips 6 40%-797 -797 -1,594
Subtotal (less passby) =1,195 1,195 2,390
Hotel 400 Rooms 310 T = 10.84(X) - 423.51 50%50%1,956 1,956 3,912 95.0%1.29 2,656 2,656 5,312 393 392 785 2,263 2,264 4,527 80%1,810 1,812 3,622 1.40 1,293 1,294 2,587
General Office Building 1,170,000 GFA 710 Ln(T) = 0.87Ln(X) + 3.05 50%50%4,931 4,930 9,861 95.3%1.08 5,587 5,588 11,175 524 525 1,049 5,063 5,063 10,126 65%3,291 3,291 6,582 1.20 2,742 2,743 5,485
Medical Office Building 275,000 GFA 720 36.00 50%50%4,950 4,950 9,900 95.3%1.08 5,609 5,610 11,219 526 527 1,053 5,083 5,083 10,166 80%4,066 4,067 8,133 1.60 2,541 2,542 5,083
Research and Development Center 180,000 GFA 760 T = 9.70(X) + 247.71 50%50%997 997 1,994 95.3%1.08 1,130 1,130 2,260 106 106 212 1,024 1,024 2,048 65%666 665 1,331 1.20 555 554 1,109
General Light Industrial 60,000 GFA 110 T = 3.76(X) + 50.47 50%50%138 138 276 95.3%1.08 156 157 313 14 15 29 142 142 284 80%114 113 227 1.20 95 94 189
Music Venue 8 8,000 Seats --50%50%----------------0 0 0
EXISTING USE TO REMAIN (NOT CURRENTLY OCCUPIED):
General Office Building 258,992 GFA 710 Ln(T) = 0.87Ln(X) + 3.05 50%50%1,328 1,328 2,656 95.3%1.08 1,505 1,505 3,010 141 141 282 1,364 1,364 2,728 65%887 886 1,773 1.20 739 739 1,478
EXISTING USE TO REMAIN (CURRENTLY OCCUPIED)
Office (Sounders)52,990
408 407 815 100%1.08 440 440 880 43 40 83 398 399 797 100%398 399 797 1.00 398 399 797
EXISTING USE TO BE REMOVED
Day Care Center 21,083 GFA 565 47.62 50%50%502 502 1,004 -----------------502 -502 -1,004
Proposed Weekday Daily Trips Less Internal Trips =13,493 13,495 26,988
Less Total Passby Trips =-797 -797 -1,594
Less Existing Uses to be Removed =-502 -502 -1,004
Net Proposed Weekday Daily Trips =12,194 12,196 24,390
Less Existing Trips =-1,137 -1,138 -2,275
Net New Weekday Daily Trips =11,057 11,058 22,115
Notes:
1 GFA is Gross Floor Area, GLA is Gross Leasable Area, DU is Dwelling Unit.
2 Institute of Transportation Engineers, Trip Generation Manual, 11th Edition (2021) Land Use Codes.
3 Baseline Mode-Split and AVO based on the ITE Trip Generation Handbook, 3rd Edition, 2017, Appendix B.
4 ITE Person Trips is equal to Base ITE Vehicle Trip Generation multiplied by AVO divided by Vehicle Mode-Split
5 Internal trip reductions based on methodology documented in the ITE Trip Generation Handbook, 3rd Edition, 2017.
6 Passby percent based on the Institute of Transportation Engineers, Trip Generation Manual, 11th Edition (2021).
7 Local mode-split and AVO adjustments based on prior Boeing Longacres Office Park (LOP) EIS analysis, City of Renton Comprehensive Plan Transportation Impact Fee Rate Study, and City of Bellevue Mobility Implementation Plan.
8 Activites Based Trip Generation
from Sounders Trip Generation Assessment
Longacres Master Plan - EIS Alternative 2
Weekday Daily Trip Generation
Vehicle Trip GenerationDirectional Distribution Vehicle Trip Generation Baseline Data
3 ITE Person Trips4 Internal Person Trips5 External Person Trips5 Person Trips by Vehicle
Analyst TENW Project Name Longacres Master Plan - EIS Alt 2
Date 11/7/2024 Time Period Daily
Assumed Average of AM and PM internal
capture rates from NCHRP 8-51 Methodology
LAND USE A : Residential
221/215/254
TO LAND USE D:Office
Enter from External 2%158 2%289
Exit to External
3%237 30%4328 From To AM PM Average To From AM PM Average
Residential Office 2%4%3%Residential Office 0%4%2%
Residential Retail 1%42%22%Residential Retail 2%46%24%
Residential Restaurant 20%21%21%Residential Restaurant 5%16%11%
Residential Hotel 0%3%2%Residential Hotel 0%0%0%
Office Residential 1%2%2%Office Residential 3%57%30%
22%1737 24%1894 2%158 0%0 Office Retail 28%20%24%Office Retail 4%31%18%
Office Restaurant 63%4%34%Office Restaurant 14%30%22%
Office Hotel 0%0%0%Office Hotel 3%0%2%
Retail Office 29%2%16%Retail Office 32%8%20%
14%787 20%1124 6%159 1%27 Retail Residential 14%26%20%Retail Residential 17%10%14%
Retail Restaurant 13%29%21%Retail Restaurant 8%50%29%
Retail Hotel 0%5%3%Retail hotel 4%2%3%
Restaurant Residential 4%18%11%Restaurant Residential 20%14%17%
Restaurant Office 31%3%17%Restaurant Office 23%2%13%
Restaurant Retail 14%41%28%Restaurant Retail 50%29%40%
LAND USE B: Retail LAND USE C : Hotel
Hotel Residential 0%2%1%Hotel Residential 0%12%6%
ITE LU Code Hotel Office 75%0%38%Hotel Office 0%0%0%
Size Hotel Retail 14%16%15%Hotel Retail 0%17%9%
Enter from External Total 3%169 15%398 Enter from External
3,542 Enter 5,622
3,429 Exit 5,622
Exit to External Total 11,244 you Exit to External
%100%3%169 9%239
16%900 20%1124 38%1009 0%0
18%2597 24%3463 2%289 0%0
LAND USE D: Office
710/720/760/110
TO LAND USE A:Residential
Enter from External 30%4328 3%237
Exit to External
2%289 2%158
158
6611 Enter 7,893 1,282 6,611
Multi-Use Development Trip Generation and Internal Capture
Summary - Daily
ITE LU Code
Size 2,670 DU
Total Internal External
Total 15,787 2,464 13,323
%100% 16% 84%
6712 Exit 7,894 1,182 6,712
Balanced Balanced Balanced Balanced
Demand Demand Demand Demand
237
Demand Demand Demand Demand
787 1124 158 0
821 ITE LU Code 310
100,000 SF Demand Balanced Demand Size 400 rooms
External
2,080 3,542 Enter 2,656 327 2,329
Internal External 169 Total Internal
4,273 6,971 Total 5,312 785 4,527
2,329
2,193 3,429 Exit 2,656 458 2,198 2,198
85%
Demand Balanced Demand
38% 62%169 %100% 15%
Demand Demand Demand Demand
900 1124 289 0
237
13001 Enter 14,427 1,426
Balanced Balanced Balanced Balanced
ITE LU Code
Size 1,996,982 SF
13,001
13148 Exit 14,430 1,282 13,148
Total Internal External
158
Total 28,857 2,708 26,149
%100% 9% 91%
1/31/2025
Local Data7 Local Data7
Land Use Area Units 1 LUC 2 Trip Rate or Equation2 In Out In Out Total
Vehicle
Mode-Split AVO In Out Total In Out Total In Out Total
Vehicle
Mode-Split In Out Total AVO In Out Total
PROPOSED USES:
Multifamily Housing (Mid-Rise) close to rail transit 2,150 DU 221 0.32 36%64%248 440 688 93.0%1.11 296 525 821 5 16 21 291 509 800 65.0%189 331 520 1.40 135 236 371
Single-Family Attached Housing 285 DU 215 T = 0.52(X) - 5.7 25%75%36 107 143 93.0%1.11 43 128 171 0 3 3 34 97 131 65.0%22 63 85 1.40 16 45 61
Assisted Living 235 Beds 254 0.18 60%40%25 17 42 93.0%1.11 30 20 50 2 1 3 37 47 84 85.0%31 40 71 1.40 22 29 51
Shopping Plaza (40-150k) with Supermarket 100,000 GLA 821 3.53 62%38%219 134 353 100.0%1.17 256 157 413 99 53 152 157 104 261 80.0%126 83 209 1.40 90 59 149
Passby Trips 6 40%-36 -24 -60
Subtotal (less passby) =54 35 89
Hotel 400 Rooms 310 T = 0.5(X)-7.45 56%44%108 85 193 94.5%1.26 144 113 257 0 88 88 144 25 169 80.0%115 20 135 1.40 82 14 96
General Office Building 1,170,000 GFA 710 Ln(T) = 0.86Ln(X) + 1.16 88%12%1,221 167 1,388 93.5%1.06 1,384 189 1,573 78 36 114 1306 153 1459 65.0%849 99 948 1.20 708 82 790
Medical Office Building 275,000 GFA 720 Ln(T) = 0.90Ln(X) + 1.34 79%21%473 126 599 93.5%1.06 536 143 679 22 27 49 514 116 630 80.0%411 93 504 1.60 257 58 315
Research and Development Center 180,000 GFA 760 T = 0.89(X)+24.54 82%18%152 33 185 93.5%1.06 172 37 209 8 7 15 164 30 194 65.0%107 19 126 1.20 89 16 105
General Light Industrial 60,000 GFA 110 T = 0.68(X) + 3.81 88%12%40 5 45 93.5%1.06 45 6 51 3 1 4 42 5 47 80.0%34 4 38 1.20 28 4 32
Music Venue 8 8,000 Seats ----0 0 0 - ----------- - - - - 0 0 0
EXISTING USE TO REMAIN (NOT CURRENTLY OCCUPIED):
General Office Building 258,992 GFA 710 Ln(T) = 0.86Ln(X) + 1.16 88%12%334 45 379 93.5%1.06 379 51 430 21 10 31 358 41 399 65.0%233 26 259 1.20 194 22 216
EXISTING USE TO REMAIN (CURRENTLY OCCUPIED)
Office (Sounders)52,990
83 5 88 100.0%1.06 88 5 93 5 1 6 83 4 87 100.0%83 4 87 1.00 83 4 87
EXISTING USE TO BE REMOVED
Day Care Center 21,083 GFA 565 11.00 53%47%123 109 232 - ----------- - - - - -123 -109 -232
Gross Proposed AM Peak Hour Trips Less Total Internal Trips =1,704 569 2,273
Less Total Passby Trips =-36 -24 -60
Less Existing Uses to be Removed =-123 -109 -232
Net Proposed Weekday AM Peak Hour Trips =1,545 436 1,981
Less Existing Trips =-277 -26 -303
Net New Weekday AM Peak Hour Trips =1,268 410 1,678
Notes:
1 GFA is Gross Floor Area, GLA is Gross Leasable Area, DU is Dwelling Unit.
2 Institute of Transportation Engineers, Trip Generation Manual, 11th Edition (2021) Land Use Codes.
3 Baseline Mode-Split and AVO based on the ITE Trip Generation Handbook, 3rd Edition, 2017, Appendix B.
4 ITE Person Trips is equal to Base ITE Vehicle Trip Generation multiplied by AVO divided by Vehicle Mode-Split
5 Internal trip reductions based on methodology documented in the ITE Trip Generation Handbook, 3rd Edition, 2017.
6 Passby percent based on the Institute of Transportation Engineers, Trip Generation Manual, 11th Edition (2021).
7 Local mode-split and AVO adjustments based on prior Boeing Longacres Office Park (LOP) EIS analysis, City of Renton Comprehensive Plan Transportation Impact Fee Rate Study, and City of Bellevue Mobility Implementation Plan.
8 Activites Based Trip Generation
Longacres Master Plan - EIS Alternative 2
from Sounders Trip Generation Assessment
AM Peak Hour Trip Generation
Vehicle Trip GenerationDirectional Distribution Base ITE Vehicle Trip Generation Baseline Data
3 ITE Person Trips4 Internal Person Trips5 External Person Trips5 Person Trips by Vehicle
Project Name: Organization:
Project Location: Performed By:
Scenario Description:EIS Alternative 2 Date:11/11/2024
Analysis Year: Checked By:
Analysis Period: Date:
ITE LUCs1 Quantity Units Total Entering Exiting
Office 710/720/760/110 1,996,982 SF 3035 2,604 431
Retail 821 100,000 SF 413 256 157
Restaurant
Cinema/Entertainment 0
Residential 221/215/254 2,670 DU 1042 369 673
Hotel 310 400 rooms 257 144 113
All Other Land Uses2 110 60,000 SF 0
Total 4747 3373 1374
Veh. Occ. % Transit % Non-Motorized Veh. Occ. % Transit % Non-Motorized
Office
Retail
Restaurant
Cinema/Entertainment
Residential
Hotel
All Other Land Uses2
Office Retail Restaurant Residential Hotel
Office
Retail
Restaurant
Cinema/Entertainment
Residential
Hotel
Office Retail Restaurant Residential Hotel
Office 82 0 0 0
Retail 46 0 7 0
Restaurant 0 0 0 0
Cinema/Entertainment 0 0 0 0 0
Residential 13 7 0 0
Hotel 78 10 0 0
Total Entering Exiting Land Use Entering Trips Exiting Trips
All Person-Trips 4,747 3,373 1,374 Office 5% 19%
Internal Capture Percentage 10% 7% 18% Retail 39% 34%
Restaurant N/A N/A
External Vehicle-Trips3 4,261 3,130 1,131 Cinema/Entertainment N/A N/A
External Transit-Trips4 0 0 0 Residential 2% 3%
External Non-Motorized Trips4 0 0 0 Hotel 0% 78%
4Person-Trips
*Indicates computation that has been rounded to the nearest whole number.
Estimation Tool Developed by the Texas Transportation Institute
1Land Use Codes (LUCs) from Trip Generation Informational Report , published by the Institute of Transportation Engineers.
2Total estimate for all other land uses at mixed-use development site-not subject to internal trip capture computations in this estimator
3Vehicle-trips computed using the mode split and vehicle occupancy values provided in Table 2-A
0
0
0
Table 5-A: Computations Summary Table 6-A: Internal Trip Capture Percentages by Land Use
0
Table 4-A: Internal Person-Trip Origin-Destination Matrix*
Origin (From)Destination (To)
Cinema/Entertainment
0
Origin (From)Destination (To)
Cinema/Entertainment
AM Street Peak Hour
Table 1-A: Base Vehicle-Trip Generation Estimates (Single-Use Site Estimate)
Land Use Development Data (For Information Only )Estimated Vehicle-Trips
Table 2-A: Mode Split and Vehicle Occupancy Estimates
Land Use Entering Trips Exiting Trips
Table 3-A: Average Land Use Interchange Distances (Feet Walking Distance)
Future Buildout
NCHRP 8-51 Internal Trip Capture Estimation Tool
Longacres Master Plan
TENW
Project Name:
Analysis Period:
Veh. Occ. Vehicle-Trips Person-Trips* Veh. Occ. Vehicle-Trips Person-Trips*
Office 1.00 2604 2604 1.00 431 431
Retail 1.00 256 256 1.00 157 157
Restaurant 1.00 0 0 1.00 0 0
Cinema/Entertainment 1.00 0 0 1.00 0 0
Residential 1.00 369 369 1.00 673 673
Hotel 1.00 144 144 1.00 113 113
Office Retail Restaurant Residential Hotel
Office 121 272 4 0
Retail 46 20 22 0
Restaurant 0 0 0 0
Cinema/Entertainment 0 0 0 0 0
Residential 13 7 135 0
Hotel 85 16 10 0
Office Retail Restaurant Residential Hotel
Office 82 0 0 0
Retail 104 0 7 0
Restaurant 365 20 18 6
Cinema/Entertainment 0 0 0 0 0
Residential 78 44 0 0
Hotel 78 10 0 0
Internal External Total Vehicles1 Transit2 Non-Motorized2
Office 137 2467 2604 2467 0 0
Retail 99 157 256 157 0 0
Restaurant 0 0 0 0 0 0
Cinema/Entertainment 0 0 0 0 0 0
Residential 7 362 369 362 0 0
Hotel 0 144 144 144 0 0
All Other Land Uses3 0 0 0 0 0 0
Internal External Total Vehicles1 Transit2 Non-Motorized2
Office 82 349 431 349 0 0
Retail 53 104 157 104 0 0
Restaurant 0 0 0 0 0 0
Cinema/Entertainment 0 0 0 0 0 0
Residential 20 653 673 653 0 0
Hotel 88 25 113 25 0 0
All Other Land Uses3 0 0 0 0 0 0
1Vehicle-trips computed using the mode split and vehicle occupancy values provided in Table 2-A
2Person-Trips
3Total estimate for all other land uses at mixed-use development site-not subject to internal trip capture computations in this estimator
*Indicates computation that has been rounded to the nearest whole number.
Table 9-A (D): Internal and External Trips Summary (Entering Trips)
Destination Land Use Person-Trip Estimates External Trips by Mode*
Table 9-A (O): Internal and External Trips Summary (Exiting Trips)
Origin Land Use Person-Trip Estimates External Trips by Mode*
0
0
0
Table 8-A (D): Internal Person-Trip Origin-Destination Matrix (Computed at Destination)
Origin (From)Destination (To)
Cinema/Entertainment
0
0
0
0
0
Table 7-A: Conversion of Vehicle-Trip Ends to Person-Trip Ends
Land Use Table 7-A (D): Entering Trips Table 7-A (O): Exiting Trips
Table 8-A (O): Internal Person-Trip Origin-Destination Matrix (Computed at Origin)
Origin (From)Destination (To)
Cinema/Entertainment
0
0
Longacres Master Plan
AM Street Peak Hour
Local Data7 Local Data7
Land Use Area Units 1 LUC 2 Trip Rate or Equation2 In Out In Out Total
Vehicle
Mode-Split AVO In Out Total In Out Total In Out Total
Vehicle
Mode-Split In Out Total AVO In Out Total
PROPOSED USES:
Multifamily Housing (Mid-Rise) close to rail transit 2,150 DU 221 T = 0.29(X) - 0.09 65%35%405 218 623 95.5%1.18 500 269 769 132 54 186 368 215 583 65.0%239 140 379 1.40 171 100 271
Single-Family Attached Housing 285 DU 215 T = 0.60(X) - 3.93 59%41%99 68 167 95.5%1.18 122 84 206 26 11 37 69 46 115 65.0%45 30 75 1.40 32 22 54
Assisted Living 235 Beds 254 0.24 39%61%22 34 56 95.5%1.18 27 42 69 15 15 30 39 54 93 85.0%33 46 79 1.40 24 32 56
Shopping Plaza (40-150k) with Supermarket 100,000 GLA 821 9.03 48%52%433 470 903 99.9%1.20 520 565 1,085 104 186 290 416 379 795 80.0%333 303 636 1.40 238 216 454
Passby Trips 6 40%-96 -86 -182
Subtotal (less passby) =142 130 272
Hotel 400 Rooms 310 T = 0.74(X)-27.89 53%47%142 126 268 95.4%1.31 195 173 368 40 10 50 155 163 318 80.0%124 130 254 1.40 89 92 181
General Office Building 1,170,000 GFA 710 Ln(T) = 0.83Ln(X) + 1.29 17%83%217 1,062 1,279 97.0%1.09 244 1,193 1,437 9 31 40 235 1162 1,397 65.0%153 755 908 1.20 128 629 757
Medical Office Building 275,000 GFA 720 T = 4.07(X)-3.17 30%70%335 781 1,116 97.0%1.09 376 878 1,254 12 23 35 364 855 1,219 80.0%291 684 975 1.60 182 427 609
Research and Development Center 180,000 GFA 760 T = 0.84(X)+25.08 16%84%28 148 176 97.0%1.09 31 166 197 1 4 5 30 162 192 65.0%20 105 125 1.20 17 87 104
General Light Industrial 60,000 GFA 110 Ln(T) = 0.72Ln(X) + 0.38 14%86%4 24 28 97.0%1.09 4 27 31 0 1 1 4 26 30 80.0%3 21 24 1.20 3 17 20
Music Venue 8 8,000 Seats ------------------0 0 0
EXISTING USE TO REMAIN (NOT CURRENTLY OCCUPIED):
General Office Building 258,992 GFA 710 Ln(T) = 0.83Ln(X) + 1.29 17%83%62 304 366 97.0%1.09 70 342 412 2 9 11 68 333 401 65.0%44 217 261 1.20 37 181 218
EXISTING USE TO REMAIN (CURRENTLY OCCUPIED)
Office (Sounders)52,990
73 39 112 100.0%1.00 73 39 112 3 0 3 70 39 109 100.0%70 39 109 1.00 70 39 109
EXISTING USE TO BE REMOVED
Day Care Center 21,083 GFA 565 11.12 47%53%110 124 234 -----------------110 -124 -234
Proposed PM Peak Hour Trips Less Internal Trips =991 1,842 2,833
Less Total Passby Trips =-96 -86 -182
Less Existing Uses to be Removed = -110 -124 -234
Net Proposed Weekday PM Peak Hour Trips =785 1,632 2,417
Less Existing Trips =-107 -220 -327
Net New Weekday PM Peak Hour Trips =678 1,412 2,090
Notes:
1 GFA is Gross Floor Area, GLA is Gross Leasable Area, DU is Dwelling Unit.
2 Institute of Transportation Engineers, Trip Generation Manual, 11th Edition (2021) Land Use Codes.
3 Baseline Mode-Split and AVO based on the ITE Trip Generation Handbook, 3rd Edition, 2017, Appendix B.
4 ITE Person Trips is equal to Base ITE Vehicle Trip Generation multiplied by AVO divided by Vehicle Mode-Split.
5 Internal trip reductions based on methodology documented in the ITE Trip Generation Handbook, 3rd Edition, 2017.
6 Passby percent based on the Institute of Transportation Engineers, Trip Generation Manual, 11th Edition (2021).
7 Local mode-split and AVO adjustments based on prior Boeing Longacres Office Park (LOP) EIS analysis, City of Renton Comprehensive Plan Transportation Impact Fee Rate Study, and City of Bellevue Mobility Implementation Plan.
8 Activites Based Trip Generation
Longacres Master Plan - EIS Alternative 2
from Sounders Trip Generation Assessment
PM Peak Hour Trip Generation
Total Vehicle Trip GenerationDirectional Distribution Base ITE Vehicle Trip Generation Baseline Data
3 ITE Person Trips4 Internal Person Trips5 External Person Trips5 Person Trips by Vehicle
Project Name: Organization:
Project Location: Performed By:
Scenario Description:EIS Alternative 2 Date:12/13/2024
Analysis Year: Checked By:
Analysis Period: Date:
ITE LUCs1 Quantity Units Total Entering Exiting
Office 710/720/760/110 1,996,982 SF 3443 798 2,645
Retail 821 100,000 SF 1085 520 565
Restaurant 0
Cinema/Entertainment 0
Residential 221/215/254 2,670 DU 1044 649 395
Hotel 310 400 rooms 368 195 173
All Other Land Uses2 110 60,000 SF 0
Total 5940 2162 3778
Veh. Occ. % Transit % Non-Motorized Veh. Occ. % Transit % Non-Motorized
Office
Retail
Restaurant
Cinema/Entertainment
Residential
Hotel
All Other Land Uses2
Office Retail Restaurant Residential Hotel
Office
Retail
Restaurant
Cinema/Entertainment
Residential
Hotel
Office Retail Restaurant Residential Hotel
Office 42 0 26 0
Retail 11 0 147 28
Restaurant 0 0 0 0
Cinema/Entertainment 0 0 0 0 0
Residential 16 52 0 12
Hotel 0 10 0 0
Total Entering Exiting Land Use Entering Trips Exiting Trips
All Person-Trips 5,940 2,162 3,778 Office 3% 3%
Internal Capture Percentage 12% 16% 9% Retail 20% 33%
Restaurant N/A N/A
External Vehicle-Trips3 5,252 1,818 3,434 Cinema/Entertainment N/A N/A
External Transit-Trips4 0 0 0 Residential 27% 20%
External Non-Motorized Trips4 0 0 0 Hotel 21% 6%
4Person-Trips
*Indicates computation that has been rounded to the nearest whole number.
Estimation Tool Developed by the Texas Transportation Institute
1Land Use Codes (LUCs) from Trip Generation Informational Report , published by the Institute of Transportation Engineers.
2Total estimate for all other land uses at mixed-use development site-not subject to internal trip capture computations in this estimator
3Vehicle-trips computed using the mode split and vehicle occupancy values provided in Table 2-P
0
0
0
Table 5-P: Computations Summary Table 6-P: Internal Trip Capture Percentages by Land Use
0
Table 4-P: Internal Person-Trip Origin-Destination Matrix*
Origin (From)Destination (To)
Cinema/Entertainment
0
Origin (From)Destination (To)
Cinema/Entertainment
PM Street Peak Hour
Table 1-P: Base Vehicle-Trip Generation Estimates (Single-Use Site Estimate)
Land Use Development Data (For Information Only )Estimated Vehicle-Trips
Table 2-P: Mode Split and Vehicle Occupancy Estimates
Land Use Entering Trips Exiting Trips
Table 3-P: Average Land Use Interchange Distances (Feet Walking Distance)
Future Buildout
NCHRP 8-51 Internal Trip Capture Estimation Tool
Longacres Master Plan
TENW
Project Name:
Analysis Period:
Veh. Occ. Vehicle-Trips Person-Trips* Veh. Occ. Vehicle-Trips Person-Trips*
Office 1.00 798 798 1.00 2645 2645
Retail 1.00 520 520 1.00 565 565
Restaurant 1.00 0 0 1.00 0 0
Cinema/Entertainment 1.00 0 0 1.00 0 0
Residential 1.00 649 649 1.00 395 395
Hotel 1.00 195 195 1.00 173 173
Office Retail Restaurant Residential Hotel
Office 529 106 53 0
Retail 11 164 147 28
Restaurant 0 0 0 0
Cinema/Entertainment 0 0 0 0 0
Residential 16 166 83 12
Hotel 0 28 118 3
Office Retail Restaurant Residential Hotel
Office 42 0 26 0
Retail 247 0 299 33
Restaurant 239 260 104 138
Cinema/Entertainment 48 21 0 26 2
Residential 455 52 0 23
Hotel 0 10 0 0
Internal External Total Vehicles1 Transit2 Non-Motorized2
Office 27 771 798 771 0 0
Retail 104 416 520 416 0 0
Restaurant 0 0 0 0 0 0
Cinema/Entertainment 0 0 0 0 0 0
Residential 173 476 649 476 0 0
Hotel 40 155 195 155 0 0
All Other Land Uses3 0 0 0 0 0 0
Internal External Total Vehicles1 Transit2 Non-Motorized2
Office 68 2577 2645 2577 0 0
Retail 186 379 565 379 0 0
Restaurant 0 0 0 0 0 0
Cinema/Entertainment 0 0 0 0 0 0
Residential 80 315 395 315 0 0
Hotel 10 163 173 163 0 0
All Other Land Uses3 0 0 0 0 0 0
*Indicates computation that has been rounded to the nearest whole number.
Origin Land Use Person-Trip Estimates External Trips by Mode*
1Vehicle-trips computed using the mode split and vehicle occupancy values provided in Table 2-P
2Person-Trips
3Total estimate for all other land uses at mixed-use development site-not subject to internal trip capture computations in this estimator
Table 9-P (O): Internal and External Trips Summary (Exiting Trips)
0
0
0
0
0
Table 9-P (D): Internal and External Trips Summary (Entering Trips)
Destination Land Use Person-Trip Estimates External Trips by Mode*
Origin (From)Destination (To)
Cinema/Entertainment
Origin (From)Destination (To)
Cinema/Entertainment
0
23
0
0
0
Table 8-P (D): Internal Person-Trip Origin-Destination Matrix (Computed at Destination)
Table 7-P: Conversion of Vehicle-Trip Ends to Person-Trip Ends
Land Use Table 7-P (D): Entering Trips Table 7-P (O): Exiting Trips
Table 8-P (O): Internal Person-Trip Origin-Destination Matrix (Computed at Origin)
Longacres Master Plan
PM Street Peak Hour
EIS Alternative 3
Local Data7 Local Data7
Land Use Area Units 1 LUC 2 Trip Rate or Equation2 In Out In Out Total
Vehicle
Mode-Split AVO In Out Total In Out Total In Out Total
Vehicle
Mode-Split In Out Total AVO In Out Total
PROPOSED USES:
Multifamily Housing (Mid-Rise)2,350 DU 221 4.75 50%50%5,581 5,582 11,163 94.3%1.15 6,806 6,807 13,613 1,174 1,175 2,349 5,632 5,632 11,264 65%3,661 3,661 7,322 1.40 2,615 2,615 5,230
Single-Family Attached Housing 250 DU 215 T = 7.62(X) - 50.48 50%50%927 928 1,855 94.3%1.15 1,131 1,131 2,262 195 195 390 936 936 1,872 65%609 608 1,217 1.40 435 434 869
Assisted Living 235 Beds 254 2.6 50%50%305 306 611 94.3%1.15 373 372 745 65 64 129 308 308 616 85%262 262 524 1.40 187 187 374
Shopping Plaza (40-150k) with Supermarket 120,000 GLA 821 94.49 50%50%5,670 5,669 11,339 100.0%1.19 6,747 6,746 13,493 2,563 2,563 5,126 4,184 4,183 8,367 80%3,347 3,347 6,694 1.40 2,391 2,390 4,781
Passby Trips 6 40%-956 -956 -1,912
Subtotal (less passby) =1,435 1,434 2,869
Hotel 400 Rooms 310 T = 10.84(X) - 423.51 50%50%1,956 1,956 3,912 95.0%1.29 2,656 2,656 5,312 494 494 988 2,162 2,162 4,324 80%1,730 1,729 3,459 1.40 1,236 1,235 2,471
General Office Building 1,930,000 GFA 710 Ln(T) = 0.87Ln(X) + 3.05 50%50%7,621 7,621 15,242 95.3%1.08 8,636 8,637 17,273 664 664 1,328 7,972 7,973 15,945 65%5,182 5,182 10,364 1.20 4,318 4,319 8,637
Medical Office Building 460,000 GFA 720 36.00 50%50%8,280 8,280 16,560 95.3%1.08 9,383 9,384 18,767 721 722 1,443 8,662 8,662 17,324 80%6,930 6,929 13,859 1.60 4,331 4,331 8,662
Research and Development Center 180,000 GFA 760 T = 9.70(X) + 247.71 50%50%997 997 1,994 95.3%1.08 1,130 1,130 2,260 87 87 174 1,043 1,043 2,086 65%678 678 1,356 1.20 565 565 1,130
General Light Industrial 60,000 GFA 110 T = 3.76(X) + 50.47 50%50%138 138 276 95.3%1.08 156 157 313 12 12 24 144 145 289 80%115 116 231 1.20 96 97 193
Music Venue 8 8,000 Seats --50%50%----------------0 0 0
EXISTING USE TO REMAIN (NOT CURRENTLY OCCUPIED):
General Office Building 258,992 GFA 710 Ln(T) = 0.87Ln(X) + 3.05 50%50%1,328 1,328 2,656 95.3%1.08 1,505 1,505 3,010 115 116 231 1,390 1,389 2,779 65%904 902 1,806 1.20 753 752 1,505
EXISTING USE TO REMAIN (CURRENTLY OCCUPIED)
Office (Sounders)52,990
408 407 815 100%1.08 440 440 880 35 33 68 405 407 812 100%405 407 812 1.00 405 407 812
EXISTING USE TO BE REMOVED
Day Care Center 21,083 GFA 565 47.62 50%50%502 502 1,004 -----------------502 -502 -1,004
Proposed Weekday Daily Trips Less Internal Trips =17,332 17,332 34,664
Less Total Passby Trips =-956 -956 -1,912
Less Existing Uses to be Removed =-502 -502 -1,004
Net Proposed Weekday Daily Trips =15,874 15,874 31,748
Less Existing Trips =-1,158 -1,159 -2,317
Net New Weekday Daily Trips =14,716 14,715 29,431
Notes:
1 GFA is Gross Floor Area, GLA is Gross Leasable Area, DU is Dwelling Unit.
2 Institute of Transportation Engineers, Trip Generation Manual, 11th Edition (2021) Land Use Codes.
3 Baseline Mode-Split and AVO based on the ITE Trip Generation Handbook, 3rd Edition, 2017, Appendix B.
4 ITE Person Trips is equal to Base ITE Vehicle Trip Generation multiplied by AVO divided by Vehicle Mode-Split
5 Internal trip reductions based on methodology documented in the ITE Trip Generation Handbook, 3rd Edition, 2017.
6 Passby percent based on the Institute of Transportation Engineers, Trip Generation Manual, 11th Edition (2021).
7 Local mode-split and AVO adjustments based on prior Boeing Longacres Office Park (LOP) EIS analysis, City of Renton Comprehensive Plan Transportation Impact Fee Rate Study, and City of Bellevue Mobility Implementation Plan.
8 Activites Based Trip Generation
from Sounders Trip Generation Assessment
Longacres Master Plan - EIS Alternative 3
Weekday Daily Trip Generation
Vehicle Trip GenerationDirectional Distribution Vehicle Trip Generation Baseline Data
3 ITE Person Trips4 Internal Person Trips5 External Person Trips5 Person Trips by Vehicle
Analyst TENW Project Name Longacres Master Plan - EIS Alt 3
Date 11/7/2024 Time Period Daily
Assumed Average of AM and PM internal
capture rates from NCHRP 8-51 Methodology
LAND USE A : Residential
221/215/254
TO LAND USE D:Office
Enter from External 2%166 2%425
Exit to External
3%249 30%6375 From To AM PM Average To From AM PM Average
Residential Office 2%4%3%Residential Office 0%4%2%
Residential Retail 1%42%22%Residential Retail 2%46%24%
Residential Restaurant 20%21%21%Residential Restaurant 5%16%11%
Residential Hotel 0%3%2%Residential Hotel 0%0%0%
Office Residential 1%2%2%Office Residential 3%57%30%
22%1828 24%1994 2%166 0%0 Office Retail 28%20%24%Office Retail 4%31%18%
Office Restaurant 63%4%34%Office Restaurant 14%30%22%
Office Hotel 0%0%0%Office Hotel 3%0%2%
Retail Office 29%2%16%Retail Office 32%8%20%
14%945 20%1349 6%159 1%27 Retail Residential 14%26%20%Retail Residential 17%10%14%
Retail Restaurant 13%29%21%Retail Restaurant 8%50%29%
Retail Hotel 0%5%3%Retail hotel 4%2%3%
Restaurant Residential 4%18%11%Restaurant Residential 20%14%17%
Restaurant Office 31%3%17%Restaurant Office 23%2%13%
Restaurant Retail 14%41%28%Restaurant Retail 50%29%40%
LAND USE B: Retail LAND USE C : Hotel
Hotel Residential 0%2%1%Hotel Residential 0%12%6%
ITE LU Code Hotel Office 75%0%38%Hotel Office 0%0%0%
Size Hotel Retail 14%16%15%Hotel Retail 0%17%9%
Enter from External Total 3%202 15%398 Enter from External
4,251 Enter 6,747
4,116 Exit 6,746
Exit to External Total 13,493 you Exit to External
%100%3%202 9%239
16%1079 20%1349 38%1009 0%0
18%3825 24%5101 2%425 0%0
LAND USE D: Office
710/720/760/110
TO LAND USE A:Residential
Enter from External 30%6375 3%249
Exit to External
2%425 2%166166
Total 42,503 3,268 39,235
%100% 8% 92%
19738 Exit 21,253 1,515 19,738
Total Internal External 249
19497 Enter 21,250 1,753
Balanced Balanced Balanced Balanced
ITE LU Code
Size 2,941,982 SF
19,497
Demand Demand Demand Demand
1079 1349 425 0
81%
Demand Balanced Demand
38% 62%202 %100% 19%
5,126 8,367 Total 5,312 988 4,324
2,295
2,630 4,116 Exit 2,656 627 2,029 2,029
External
2,496 4,251 Enter 2,656 361 2,295
Internal External 202 Total Internal
821 ITE LU Code 310
120,000 SF Demand Balanced Demand Size 400 rooms
Balanced Balanced Balanced Balanced
Demand Demand Demand Demand
249
Demand Demand Demand Demand
945 1349 159 0
Total 16,620 2,868 13,752
%100% 17% 83%
6957 Exit 8,310 1,353 6,957
166
6795 Enter 8,310 1,515 6,795
Multi-Use Development Trip Generation and Internal Capture
Summary - Daily
ITE LU Code
Size 2,835 DU
Total Internal External
1/31/2025
Local Data7 Local Data7
Land Use Area Units 1 LUC 2 Trip Rate or Equation2 In Out In Out Total
Vehicle
Mode-Split AVO In Out Total In Out Total In Out Total
Vehicle
Mode-Split In Out Total AVO In Out Total
PROPOSED USES:
Multifamily Housing (Mid-Rise) close to rail transit 2,350 DU 221 0.32 36%64%271 481 752 93.0%1.11 323 574 897 7 17 24 316 557 873 65.0%205 362 567 1.40 146 259 405
Single-Family Attached Housing 250 DU 215 T = 0.52(X) - 5.7 25%75%31 93 124 93.0%1.11 37 111 148 0 3 3 30 88 118 65.0%20 57 77 1.40 14 41 55
Assisted Living 235 Beds 254 0.18 60%40%25 17 42 93.0%1.11 30 20 50 1 1 2 36 39 75 85.0%31 33 64 1.40 22 24 46
Shopping Plaza (40-150k) with Supermarket 120,000 GLA 821 3.53 62%38%263 161 424 100.0%1.17 308 188 496 118 63 181 190 125 315 80.0%152 100 252 1.40 109 71 180
Passby Trips 6 40%-44 -28 -72
Subtotal (less passby) =65 43 108
Hotel 400 Rooms 310 T = 0.5(X)-7.45 56%44%108 85 193 94.5%1.26 144 113 257 0 97 97 144 16 160 80.0%115 13 128 1.40 82 9 91
General Office Building 1,930,000 GFA 710 Ln(T) = 0.86Ln(X) + 1.16 88%12%1,879 256 2,135 93.5%1.06 2,130 290 2,420 96 47 143 2034 243 2277 65.0%1,322 158 1,480 1.20 1,102 131 1,233
Medical Office Building 460,000 GFA 720 Ln(T) = 0.90Ln(X) + 1.34 79%21%752 200 952 93.5%1.06 853 227 1,080 28 36 64 825 191 1016 80.0%660 153 813 1.60 413 95 508
Research and Development Center 180,000 GFA 760 T = 0.89(X)+24.54 82%18%152 33 185 93.5%1.06 172 37 209 6 6 12 166 31 197 65.0%108 20 128 1.20 90 17 107
General Light Industrial 60,000 GFA 110 T = 0.68(X) + 3.81 88%12%40 5 45 93.5%1.06 45 6 51 2 1 3 43 5 48 80.0%34 4 38 1.20 28 4 32
Music Venue 8 8,000 Seats ----0 0 0 - ----------- - - - - 0 0 0
EXISTING USE TO REMAIN (NOT CURRENTLY OCCUPIED):
General Office Building 258,992 GFA 710 Ln(T) = 0.86Ln(X) + 1.16 88%12%334 45 379 93.5%1.06 379 51 430 17 8 25 362 43 405 65.0%235 28 263 1.20 196 23 219
EXISTING USE TO REMAIN (CURRENTLY OCCUPIED)
Office (Sounders)52,990
83 5 88 100.0%1.06 88 5 93 5 1 6 83 4 87 100.0%83 4 87 1.00 83 4 87
EXISTING USE TO BE REMOVED
Day Care Center 21,083 GFA 565 11.00 53%47%123 109 232 - ----------- - - - - -123 -109 -232
Gross Proposed AM Peak Hour Trips Less Total Internal Trips =2,285 678 2,963
Less Total Passby Trips =-44 -28 -72
Less Existing Uses to be Removed =-123 -109 -232
Net Proposed Weekday AM Peak Hour Trips =2,118 541 2,659
Less Existing Trips =-279 -27 -306
Net New Weekday AM Peak Hour Trips =1,839 514 2,353
Notes:
1 GFA is Gross Floor Area, GLA is Gross Leasable Area, DU is Dwelling Unit.
2 Institute of Transportation Engineers, Trip Generation Manual, 11th Edition (2021) Land Use Codes.
3 Baseline Mode-Split and AVO based on the ITE Trip Generation Handbook, 3rd Edition, 2017, Appendix B.
4 ITE Person Trips is equal to Base ITE Vehicle Trip Generation multiplied by AVO divided by Vehicle Mode-Split
5 Internal trip reductions based on methodology documented in the ITE Trip Generation Handbook, 3rd Edition, 2017.
6 Passby percent based on the Institute of Transportation Engineers, Trip Generation Manual, 11th Edition (2021).
7 Local mode-split and AVO adjustments based on prior Boeing Longacres Office Park (LOP) EIS analysis, City of Renton Comprehensive Plan Transportation Impact Fee Rate Study, and City of Bellevue Mobility Implementation Plan.
8 Activites Based Trip Generation
Longacres Master Plan - EIS Alternative 3
from Sounders Trip Generation Assessment
AM Peak Hour Trip Generation
Vehicle Trip GenerationDirectional Distribution Base ITE Vehicle Trip Generation Baseline Data
3 ITE Person Trips4 Internal Person Trips5 External Person Trips5 Person Trips by Vehicle
Project Name: Organization:
Project Location: Performed By:
Scenario Description:EIS Alternative 3 Date:11/11/2024
Analysis Year: Checked By:
Analysis Period: Date:
ITE LUCs1 Quantity Units Total Entering Exiting
Office 710/720/760/110 2,941,982 SF 4283 3,667 616
Retail 821 120,000 SF 496 308 188
Restaurant
Cinema/Entertainment 0
Residential 221/215/254 2,835 DU 1095 390 705
Hotel 310 400 rooms 257 144 113
All Other Land Uses2 110 60,000 SF 0
Total 6131 4509 1622
Veh. Occ. % Transit % Non-Motorized Veh. Occ. % Transit % Non-Motorized
Office
Retail
Restaurant
Cinema/Entertainment
Residential
Hotel
All Other Land Uses2
Office Retail Restaurant Residential Hotel
Office
Retail
Restaurant
Cinema/Entertainment
Residential
Hotel
Office Retail Restaurant Residential Hotel
Office 99 0 0 0
Retail 55 0 8 0
Restaurant 0 0 0 0
Cinema/Entertainment 0 0 0 0 0
Residential 14 7 0 0
Hotel 85 12 0 0
Total Entering Exiting Land Use Entering Trips Exiting Trips
All Person-Trips 6,131 4,509 1,622 Office 4% 16%
Internal Capture Percentage 9% 6% 17% Retail 38% 34%
Restaurant N/A N/A
External Vehicle-Trips3 5,571 4,229 1,342 Cinema/Entertainment N/A N/A
External Transit-Trips4 0 0 0 Residential 2% 3%
External Non-Motorized Trips4 0 0 0 Hotel 0% 86%
Future Buildout
NCHRP 8-51 Internal Trip Capture Estimation Tool
Longacres Master Plan
TENW
Origin (From)Destination (To)
Cinema/Entertainment
AM Street Peak Hour
Table 1-A: Base Vehicle-Trip Generation Estimates (Single-Use Site Estimate)
Land Use Development Data (For Information Only )Estimated Vehicle-Trips
Table 2-A: Mode Split and Vehicle Occupancy Estimates
Land Use Entering Trips Exiting Trips
Table 3-A: Average Land Use Interchange Distances (Feet Walking Distance)
0
Table 4-A: Internal Person-Trip Origin-Destination Matrix*
Origin (From)Destination (To)
Cinema/Entertainment
0
1Land Use Codes (LUCs) from Trip Generation Informational Report , published by the Institute of Transportation Engineers.
2Total estimate for all other land uses at mixed-use development site-not subject to internal trip capture computations in this estimator
3Vehicle-trips computed using the mode split and vehicle occupancy values provided in Table 2-A
0
0
0
Table 5-A: Computations Summary Table 6-A: Internal Trip Capture Percentages by Land Use
4Person-Trips
*Indicates computation that has been rounded to the nearest whole number.
Estimation Tool Developed by the Texas Transportation Institute
Project Name:
Analysis Period:
Veh. Occ. Vehicle-Trips Person-Trips* Veh. Occ. Vehicle-Trips Person-Trips*
Office 1.00 3667 3667 1.00 616 616
Retail 1.00 308 308 1.00 188 188
Restaurant 1.00 0 0 1.00 0 0
Cinema/Entertainment 1.00 0 0 1.00 0 0
Residential 1.00 390 390 1.00 705 705
Hotel 1.00 144 144 1.00 113 113
Office Retail Restaurant Residential Hotel
Office 172 388 6 0
Retail 55 24 26 0
Restaurant 0 0 0 0
Cinema/Entertainment 0 0 0 0 0
Residential 14 7 141 0
Hotel 85 16 10 0
Office Retail Restaurant Residential Hotel
Office 99 0 0 0
Retail 147 0 8 0
Restaurant 513 25 20 6
Cinema/Entertainment 0 0 0 0 0
Residential 110 52 0 0
Hotel 110 12 0 0
Internal External Total Vehicles1 Transit2 Non-Motorized2
Office 154 3513 3667 3513 0 0
Retail 118 190 308 190 0 0
Restaurant 0 0 0 0 0 0
Cinema/Entertainment 0 0 0 0 0 0
Residential 8 382 390 382 0 0
Hotel 0 144 144 144 0 0
All Other Land Uses3 0 0 0 0 0 0
Internal External Total Vehicles1 Transit2 Non-Motorized2
Office 99 517 616 517 0 0
Retail 63 125 188 125 0 0
Restaurant 0 0 0 0 0 0
Cinema/Entertainment 0 0 0 0 0 0
Residential 21 684 705 684 0 0
Hotel 97 16 113 16 0 0
All Other Land Uses3 0 0 0 0 0 0
Longacres Master Plan
AM Street Peak Hour
0
Table 7-A: Conversion of Vehicle-Trip Ends to Person-Trip Ends
Land Use Table 7-A (D): Entering Trips Table 7-A (O): Exiting Trips
Table 8-A (O): Internal Person-Trip Origin-Destination Matrix (Computed at Origin)
Origin (From)Destination (To)
Cinema/Entertainment
0
0
0
0
0
Table 8-A (D): Internal Person-Trip Origin-Destination Matrix (Computed at Destination)
Origin (From)Destination (To)
Cinema/Entertainment
0
0
0
0
1Vehicle-trips computed using the mode split and vehicle occupancy values provided in Table 2-A
2Person-Trips
3Total estimate for all other land uses at mixed-use development site-not subject to internal trip capture computations in this estimator
*Indicates computation that has been rounded to the nearest whole number.
Table 9-A (D): Internal and External Trips Summary (Entering Trips)
Destination Land Use Person-Trip Estimates External Trips by Mode*
Table 9-A (O): Internal and External Trips Summary (Exiting Trips)
Origin Land Use Person-Trip Estimates External Trips by Mode*
Local Data7 Local Data7
Land Use Area Units 1 LUC 2 Trip Rate or Equation2 In Out In Out Total
Vehicle
Mode-Split AVO In Out Total In Out Total In Out Total
Vehicle
Mode-Split In Out Total AVO In Out Total
PROPOSED USES:
Multifamily Housing (Mid-Rise) close to rail transit 2,350 DU 221 T = 0.29(X) - 0.09 65%35%443 238 681 95.5%1.18 547 294 841 162 65 227 385 229 614 65.0%250 149 399 1.40 179 106 285
Single-Family Attached Housing 250 DU 215 T = 0.60(X) - 3.93 59%41%86 60 146 95.5%1.18 106 74 180 25 12 37 60 41 101 65.0%39 27 66 1.40 28 19 47
Assisted Living 235 Beds 254 0.24 39%61%22 34 56 95.5%1.18 27 42 69 16 14 30 32 49 81 85.0%27 42 69 1.40 19 30 49
Shopping Plaza (40-150k) with Supermarket 120,000 GLA 821 9.03 48%52%520 564 1,084 99.9%1.20 625 677 1,302 126 223 349 499 454 953 80.0%399 363 762 1.40 285 259 544
Passby Trips 6 40%-114 -104 -218
Subtotal (less passby) =171 155 326
Hotel 400 Rooms 310 T = 0.74(X)-27.89 53%47%142 126 268 95.4%1.31 195 173 368 45 13 58 150 160 310 80.0%120 128 248 1.40 86 91 177
General Office Building 1,930,000 GFA 710 Ln(T) = 0.83Ln(X) + 1.29 17%83%329 1,609 1,938 97.0%1.09 370 1,808 2,178 10 36 46 360 1772 2,132 65.0%234 1,152 1,386 1.20 195 960 1,155
Medical Office Building 460,000 GFA 720 T = 4.07(X)-3.17 30%70%561 1,308 1,869 97.0%1.09 630 1,470 2,100 16 29 45 614 1441 2,055 80.0%491 1,153 1,644 1.60 307 721 1,028
Research and Development Center 180,000 GFA 760 T = 0.84(X)+25.08 16%84%28 148 176 97.0%1.09 31 166 197 1 3 4 30 163 193 65.0%20 105 125 1.20 17 87 104
General Light Industrial 60,000 GFA 110 Ln(T) = 0.72Ln(X) + 0.38 14%86%4 24 28 97.0%1.09 4 27 31 0 1 1 4 26 30 80.0%3 21 24 1.20 3 17 20
Music Venue 8 8,000 Seats ------------------0 0 0
EXISTING USE TO REMAIN (NOT CURRENTLY OCCUPIED):
General Office Building 258,992 GFA 710 Ln(T) = 0.83Ln(X) + 1.29 17%83%62 304 366 97.0%1.09 70 342 412 2 7 9 68 335 403 65.0%44 218 262 1.20 37 181 218
EXISTING USE TO REMAIN (CURRENTLY OCCUPIED)
Office (Sounders)52,990
73 39 112 100.0%1.00 73 39 112 1 1 2 72 38 110 100.0%72 38 110 1.00 72 38 110
EXISTING USE TO BE REMOVED
Day Care Center 21,083 GFA 565 11.12 47%53%110 124 234 -----------------110 -124 -234
Proposed PM Peak Hour Trips Less Internal Trips =1,228 2,509 3,737
Less Total Passby Trips =-114 -104 -218
Less Existing Uses to be Removed = -110 -124 -234
Net Proposed Weekday PM Peak Hour Trips =1,004 2,281 3,285
Less Existing Trips =-109 -219 -328
Net New Weekday PM Peak Hour Trips =895 2,062 2,957
Notes:
1 GFA is Gross Floor Area, GLA is Gross Leasable Area, DU is Dwelling Unit.
2 Institute of Transportation Engineers, Trip Generation Manual, 11th Edition (2021) Land Use Codes.
3 Baseline Mode-Split and AVO based on the ITE Trip Generation Handbook, 3rd Edition, 2017, Appendix B.
4 ITE Person Trips is equal to Base ITE Vehicle Trip Generation multiplied by AVO divided by Vehicle Mode-Split.
5 Internal trip reductions based on methodology documented in the ITE Trip Generation Handbook, 3rd Edition, 2017.
6 Passby percent based on the Institute of Transportation Engineers, Trip Generation Manual, 11th Edition (2021).
7 Local mode-split and AVO adjustments based on prior Boeing Longacres Office Park (LOP) EIS analysis, City of Renton Comprehensive Plan Transportation Impact Fee Rate Study, and City of Bellevue Mobility Implementation Plan.
8 Activites Based Trip Generation
Longacres Master Plan - EIS Alternative 3
from Sounders Trip Generation Assessment
PM Peak Hour Trip Generation
Total Vehicle Trip GenerationDirectional Distribution Base ITE Vehicle Trip Generation Baseline Data
3 ITE Person Trips4 Internal Person Trips5 External Person Trips5 Person Trips by Vehicle
Project Name: Organization:
Project Location: Performed By:
Scenario Description:EIS Alternative 3 Date:12/13/2024
Analysis Year: Checked By:
Analysis Period: Date:
ITE LUCs1 Quantity Units Total Entering Exiting
Office 710/720/760/110 2,941,982 SF 5030 1,178 3,852
Retail 821 120,000 SF 1302 625 677
Restaurant 0
Cinema/Entertainment 0
Residential 221/215/254 2,835 DU 1090 680 410
Hotel 310 400 rooms 368 195 173
All Other Land Uses2 110 60,000 SF 0
Total 7790 2678 5112
Veh. Occ. % Transit % Non-Motorized Veh. Occ. % Transit % Non-Motorized
Office
Retail
Restaurant
Cinema/Entertainment
Residential
Hotel
All Other Land Uses2
Office Retail Restaurant Residential Hotel
Office
Retail
Restaurant
Cinema/Entertainment
Residential
Hotel
Office Retail Restaurant Residential Hotel
Office 50 0 27 0
Retail 14 0 176 33
Restaurant 0 0 0 0
Cinema/Entertainment 0 0 0 0 0
Residential 16 63 0 12
Hotel 0 13 0 0
Total Entering Exiting Land Use Entering Trips Exiting Trips
All Person-Trips 7,790 2,678 5,112 Office 3% 2%
Internal Capture Percentage 10% 15% 8% Retail 20% 33%
Restaurant N/A N/A
External Vehicle-Trips3 6,982 2,274 4,708 Cinema/Entertainment N/A N/A
External Transit-Trips4 0 0 0 Residential 30% 22%
External Non-Motorized Trips4 0 0 0 Hotel 23% 8%
Future Buildout
NCHRP 8-51 Internal Trip Capture Estimation Tool
Longacres Master Plan
TENW
Origin (From)Destination (To)
Cinema/Entertainment
PM Street Peak Hour
Table 1-P: Base Vehicle-Trip Generation Estimates (Single-Use Site Estimate)
Land Use Development Data (For Information Only )Estimated Vehicle-Trips
Table 2-P: Mode Split and Vehicle Occupancy Estimates
Land Use Entering Trips Exiting Trips
Table 3-P: Average Land Use Interchange Distances (Feet Walking Distance)
0
Table 4-P: Internal Person-Trip Origin-Destination Matrix*
Origin (From)Destination (To)
Cinema/Entertainment
0
1Land Use Codes (LUCs) from Trip Generation Informational Report , published by the Institute of Transportation Engineers.
2Total estimate for all other land uses at mixed-use development site-not subject to internal trip capture computations in this estimator
3Vehicle-trips computed using the mode split and vehicle occupancy values provided in Table 2-P
0
0
0
Table 5-P: Computations Summary Table 6-P: Internal Trip Capture Percentages by Land Use
4Person-Trips
*Indicates computation that has been rounded to the nearest whole number.
Estimation Tool Developed by the Texas Transportation Institute
Project Name:
Analysis Period:
Veh. Occ. Vehicle-Trips Person-Trips* Veh. Occ. Vehicle-Trips Person-Trips*
Office 1.00 1178 1178 1.00 3852 3852
Retail 1.00 625 625 1.00 677 677
Restaurant 1.00 0 0 1.00 0 0
Cinema/Entertainment 1.00 0 0 1.00 0 0
Residential 1.00 680 680 1.00 410 410
Hotel 1.00 195 195 1.00 173 173
Office Retail Restaurant Residential Hotel
Office 770 154 77 0
Retail 14 196 176 34
Restaurant 0 0 0 0
Cinema/Entertainment 0 0 0 0 0
Residential 16 172 86 12
Hotel 0 28 118 3
Office Retail Restaurant Residential Hotel
Office 50 0 27 0
Retail 365 0 313 33
Restaurant 353 313 109 138
Cinema/Entertainment 71 25 0 27 2
Residential 671 63 0 23
Hotel 0 13 0 0
Internal External Total Vehicles1 Transit2 Non-Motorized2
Office 30 1148 1178 1148 0 0
Retail 126 499 625 499 0 0
Restaurant 0 0 0 0 0 0
Cinema/Entertainment 0 0 0 0 0 0
Residential 203 477 680 477 0 0
Hotel 45 150 195 150 0 0
All Other Land Uses3 0 0 0 0 0 0
Internal External Total Vehicles1 Transit2 Non-Motorized2
Office 77 3775 3852 3775 0 0
Retail 223 454 677 454 0 0
Restaurant 0 0 0 0 0 0
Cinema/Entertainment 0 0 0 0 0 0
Residential 91 319 410 319 0 0
Hotel 13 160 173 160 0 0
All Other Land Uses3 0 0 0 0 0 0
Table 8-P (O): Internal Person-Trip Origin-Destination Matrix (Computed at Origin)
Longacres Master Plan
PM Street Peak Hour
Table 7-P: Conversion of Vehicle-Trip Ends to Person-Trip Ends
Land Use Table 7-P (D): Entering Trips Table 7-P (O): Exiting Trips
Origin (From)Destination (To)
Cinema/Entertainment
Origin (From)Destination (To)
Cinema/Entertainment
0
27
0
0
0
Table 8-P (D): Internal Person-Trip Origin-Destination Matrix (Computed at Destination)
Table 9-P (O): Internal and External Trips Summary (Exiting Trips)
0
0
0
0
0
Table 9-P (D): Internal and External Trips Summary (Entering Trips)
Destination Land Use Person-Trip Estimates External Trips by Mode*
*Indicates computation that has been rounded to the nearest whole number.
Origin Land Use Person-Trip Estimates External Trips by Mode*
1Vehicle-trips computed using the mode split and vehicle occupancy values provided in Table 2-P
2Person-Trips
3Total estimate for all other land uses at mixed-use development site-not subject to internal trip capture computations in this estimator
ATTACHMENT D
Preliminary Project Trip Distribution and Study Intersections