FEIR Appendix B - Revised Project Traffic MemoAppendix B: Revised Project Traffic Memo
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DRAFT MEMORANDUM
Date: August 20, 2018
To: Kristy Weis, David J. Powers and Associates
From: Franziska Church, Fehr & Peers
Subject: Trip Generation Estimates and Impact Discussion for the Revised Project
Description for the Vallco Special Area Specific Plan, Cupertino, CA
SJ17-1786
This memorandum presents a supplemental analysis to the Vallco Special Area Specific Plan
Transportation Impact Analysis Final Draft and Vallco Special Ara Specific Plan – Housing Rich
Alternative TIA prepared for the Vallco Special Area Specific Plan Draft Environmental Impact Report
(EIR) dated May 2018 and the Recirculated Amendment to the Draft EIR (“EIR Amendment”) dated
July 2018. As discussed in the Draft EIR, the City is undertaking a community-based planning
process to develop a Specific Plan for the project site, the Vallco Special Area. Based on input from
City Council at its June 4, 2018 Vallco Specific Plan Study Session, the City has identified another
alternative to the proposed project that would achieve all the goals expressed by the
councilmembers at that meeting. This alternative is the “Revised Project,” which contains revisions
to the project analyzed in the Draft EIR (referred to, below, as the “previous project”).
This memorandum presents the trip generation analysis results of the Revised Project and an
assessment of whether the Revised Project would result in additional transportation impacts not
previously identified in the May 2018 Draft EIR or the July 2018 Amendment.
Summary of Findings
The Revised Project is projected to have the same level of transportation impacts as the Housing
Rich Alternative presented in the July 2018 EIR Amendment and no new detailed transportation
impact analysis is required.
Kristy Weis
August 20, 2018
Page 2 of 5
Project Description
Table 1 summarizes the land use components of the Revised Project along with those for the
Previous Project and the Project Alternatives evaluated in the May 2018 Draft EIR and July 2018
Amendment. The Revised Project contains less commercial space, less office space, more residential
units, less civic uses and more education space than the Previous Project.
Table 1: Land Use Summary for the Revised Project, Previous Project, and Project
Alternatives
Project Alternative
Land Uses
Comm. (sf) Office (sf) Hotel
(rooms)
Residential
(units)
Transit
Hub
Rooftop
Garden
(acres)
Civic
Uses
(sf)
Education
(sf)
Revised Project Description Discussed in this memo:
Revised Project 460,000 1,750,000 339 2,923 Yes 30 10,000 25,0001
Included in the May 2018 Draft EIR or July 2018 Amendment:
General Plan
Buildout with
Residential Allocation
(Previous Project)
600,000 2,000,000 339 800 Yes 30 55,000 10,0003
General Plan
Buildout with
Maximum Residential
600,000 1,000,000 339 2,640 Yes 30 55,000 10,0003
Retail and Residential
600,000 -- 339 4,000 Yes -- -- --
Housing Rich
Alternative 600,000 1,500,000 339 3,250 Yes 30 50,000 15,0002
Occupied/Re-
tenanted Mall 1,207,774 -- 148 -- No -- -- --
No Project
1,207,7744
(partially
occupied)
-- 148 -- No -- -- --
Notes:
1. The education land uses include an adult education center (15,000 sf) and high school innovation center (10,000 sf).
2. For the Housing Rich Alternative the education land uses include an adult education center
3. For the Previous Project and General Plan Buildout with Maximum Residential Alternative the education land uses
include a STEM High School facility
4. The current mall is only partially occupied, and this analysis accounts for the amount of traffic generated by the current
occupancy level, which is based on driveway counts taken the week of January 15, 2018.
Source: City of Cupertino August, 2018.
Kristy Weis
August 20, 2018
Page 3 of 5
Project Traffic Estimates
The amount of traffic generated by the Revised Project was estimated by applying land use-specific
trip generation rates to the size of each land use component, and MXD reductions that account for
trips among uses within the site (known as trip internalization) and transit, bicycle, and pedestrian
access.
MXD Vehicle Trip Reductions
The MXD reductions account for the proposed mix of uses, the Specific Plan’s location in proximity
to the surrounding residential and employment land uses, transit accessibility (including VTA buses
on Stevens Creek Boulevard and shuttle access), and bike/pedestrian access. The reductions vary
by project alternative as the density and diversity of land uses change. The reductions for the
Revised Project are presented in Table 2, and are compared to the reductions for the Previous
Project and the Project Alternatives included in the Draft EIR and EIR Amendment.
Table 2: MXD Vehicle Trip Reductions
Project Alternative Daily AM Peak Hour PM Peak Hour
Revised Project Discussed in this Memo:
Revised Project 20% 30% 27%
Alternatives Included in the May 2018 Draft EIR or July 2018 Amendment:
General Plan Buildout with Residential
Allocation (Previous Project) 17% 23% 24%
General Plan Buildout with Maximum
Residential 20% 25% 30%
Retail and Residential 20% 20% 25%
Housing Rich Alternative 20% 30% 27%
Occupied/Re-tenanted Mall 5% 5% 5%
Source: Fehr & Peers, August 2018.
Vehicle Trip Estimates
Table 3 summarizes the trip generation estimates for the Revised Project and compares them to
the estimates for the Previous Project and each of the Project Alternatives included in the DEIR and
EIR Amendment. Attachment A includes detailed trip generation estimates.
Kristy Weis
August 20, 2018
Page 4 of 5
Table 3: Summary of Vehicle Trip Generation Estimates
Alternative Daily AM Peak
Hour
PM Peak
Hour
Revised Project Discussed in this Memo:
Revised Project 39,063 2,570 3,243
Alternatives Included in the May 2018 Draft EIR or July 2018 Amendment:
General Plan Buildout with Residential Allocation (Previous Project) 37,006 2,628 3,218
General Plan Buildout with Maximum Residential Alternative 33,507 2,082 2,632
Housing Rich Alternative 41,314 2,558 3,430
Retail and Residential Alternative 27,935 1,330 2,251
Occupied/Re-tenanted Mall Alternative 23,417 307 2,398
Source: Hyatt House Hotel TIA, August 2014; ITE Trip Generation Manual, 10th edition, 2017; Fehr & Peers, August 2018.
As shown in Table 3, the Revised Project generates more vehicle trips than the Previous Project on
a daily and PM peak hour basis, but fewer in the AM peak hour. The Revised Project is estimated to
generate fewer daily and PM peak hour trips than the Housing Rich Alternative, but about twelve
additional trips during the AM peak hour. Twelve trips represent less than 0.5 percent of the total
AM peak hour trip generation, which is a negligible increase in vehicle trips.
Impact Discussion
The intersection, freeway, left-turn queuing, transit delay, transit capacity analyses along with the
neighborhood intrusion and construction traffic assessments presented in the May 2018 DEIR and
July 2018 Amendment are all based on the trip generation estimates. Since the Revised Project’s
trip generation estimates fall within those for the Housing Rich Alternative, the Revised Project
would have same impacts and mitigations as presented in the July 2018 EIR Amendment and no
additional analysis is needed to evaluate the impacts of the Revised Project.
As noted in the trip generation discussion above, the Revised Project generates twelve additional
trips during the AM peak hour compared to the Housing Rich Alternative. Twelve trips represent
less than 0.5 percent of the total AM peak hour trip generation, which is a negligible increase and
would result in the same impacts as the Housing Rich Alternative. In addition, the AM peak hour
trips for the Revised Project are less than those generated by the Previous Project, which was fully
analyzed in the May 2018 Draft EIR.
Kristy Weis
August 20, 2018
Page 5 of 5
Vehicle Miles of Travel Analysis
Vehicle Miles of Travel (VMT) is presented for informational purposes for the transportation
evaluation of the Specific Plan. Table 4 summarizes the total VMT estimates, average trip lengths,
and VMT per service population for the Revised Project, the Previous Project, and Housing Rich
Alternative for comparison purposes.
Table 4: Vehicles Miles Traveled (VMT) Estimates
Project Alternative Total VMT Average Trip Length VMT Per Service
Population1
Revised Project 416,531 10.66 29.7
General Plan Buildout with Residential
Allocation (Previous Project) 330,220 8.92 30.0
Housing Rich Alternative 401,316 9.71 28.5
Notes: Service population includes estimated number of residents and employees for each Project Alternative. This does
not include visitors or shoppers.
Source: California Household Travel Survey; Fehr & Peers, August 2018.
The Revised Project generates the greatest total VMT; however, it generates a lower VMT per service
population as compared to the Previous Project. In comparison to the Housing Rich Alternative the
Revised Project generates more total VMT and more VMT per service population.
Daily
Total In Out Total In Out Total
Office SV 1,750 ksf 21,613 1,942 316 2,258 336 1,764 2,100
Shopping Center 820 460 ksf 16,971 237 145 382 807 874 1,681
Hotel2 310 339 Rooms 2,834 94 65 159 104 100 204
Multifamily Housing (Mid-Rise) 221 2,923 Units 15,901 273 779 1,052 784 502 1,286
Green Roof (Public Park) 411 38 Acres 718 96 75 171 76 57 133
Civic Space (Gov't Office Building) 730 10 ksf 226 25 8 33 4 13 17
Adult Education (Recreational Community Center) 495 15 ksf 432 17 9 26 16 19 35
High School Innovation Center 530 10 ksf 140 24 10 34 12 10 22
58,835 2,708 1,407 4,115 2,139 3,339 5,478
-20%
-11,767 -813 -422 -1,235 -578 -901 -1,479
Transit Hub3 (C)808 126 49 175 61 132 193
47,876 2,021 1,034 3,055 1,622 2,570 4,192
-8,813 -312 -173 -485 -462 -487 -949
39,063 1,709 861 2,570 1,160 2,083 3,243
ATTACHMENT A
ITE Land Use Units¹ITE Code
Table A1: Detailed Vehicle Trip Generation Estimates
Quantity
AM Peak Hour PM Peak Hour
Notes:
1. ksf = 1,000 square feet
2. The hotel trip generation rates are from the Hyatt House Hotel TIA (August 2014).
3. Transit hub vehicle trips are based on driveway counts and observations collected in January 2018.
4. Existing Vallco Mall Uses are based on existing driveway counts collected in January 2018. The existing uses account for the two restaurants, theater, ice skating rink,
bowling alley, fitness center, auto dealership storage, and employee shuttle use of the site.
Source: Hyatt House Hotel TIA, August 2014; ITE Trip Generation Manual, 10th edition, 2017; Fehr & Peers, August 2018.
Revised Project (08/10/2018)
Net External Specific Plan Project Trips (D=A+B+C):
Existing to be Removed
-30% -27%
Existing Vallco Mall Uses (E)4
Net New Project Trips (F=D+E):
Gross Project Trips (A):
(Internal and Non-SOV/Drive Alone Trips) (B)
MXD Trip Reduction