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Table 4
Vehicle Trip Generation
l DAILY AM PEAK PM PEAK
HOUR HOUR
Land Use Size Rate I Trips I Rate Trips I Rate I Trips
I Project
/611 Gateway 265,081 Sq. Ft 10.24 2,714 1.45 , 384 1.38 366
681 Gateway 124,425 Sq. Ft. 10.24 1,274 1.45 180 1.38 172
Total
389,506 Sq. Ft.
3,988
564
Source: Institute of Transportation Engineers, Trip Generation, 6th Edition, 1997. Rates
reduced by seven percent to account for observed rates of transit use at existing buildings.
The proposed project would also include a small amount (12,000 square feet) of support
retail. Assuming that half of the trips to and from the support retail would be intercepted
from the tenants in the existing and proposed Gateway office b!Jildings, the support retail
would have no net additional traffic generation.
Impact 1: The Project would generate more than 100 net new trips during the
A.M. and P.M. peak hours. The San Mateo City/County Association of
Governments (C/CAG) Agency Guidelines for the Implementation of the 1999
Congestion Management Program (UC/CAG Guidelines") specify that local
jurisdictions must ensure that the developer and/or tenants will mitigate all new
peak hour trips (including the first 100 trips) projected to be generated by the
development.
Mitigation 1: The Project sponsor shall implement a Transportation Demand
Management (TOM) program using programs acceptable to C/CAG. These
programs, once implemented, must be on-going for the occupied life of the
development. The C/CAG Guidelines specify the number of trips that may be
credited for each TOM measure. Table 5 outlines a program that would include
elements to account for credits for the 564 trips generated by the Project. In this
program, it is assumed that the 611 and 681 Gateway projects will house
approximately 1,300 employees.
611 and 681 Gateway Traffic Study
3-2
CCS
June g, 2000
538
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Table 5
Recommended Transportation Demand Management Measures and C/CAG
Guidelines Trip Credits
I
I
TOM Measure Number of Trips Recommended Total Trip Credits
Credited Quantity
Bicycle lockers and 1/3 per bike locker/rack 65 (5% of 1,300 21
racks potential employees)
Showers and changing 2 trips per facility 13 (one per floor 26
rooms excluding ground
floors)
Operation of a shuttle 2/3 trips per round trip Implement Guaranteed 130
service to rail stations shuttle seat; one trip Ride Home. Fund
per seat with existing Gateway
Guaranteed Ride shuttles to provide 130
Home program additional round trip
seats.
Subsidize transit tickets 1 trip per transit pass Subsidize 130 monthly 130
for employees subsidized at $20 per transit passes (10% of
month 1,300 employees) ..
Preferential parking for 1 trip per reserved 88 reserved parking 88
car and vanpoolers parking spot places (5% of 1,750
space garage)
Implement a vanpool 7 trips per vanpool, 10 Implement Guaranteed 50
program trips with Guaranteed Ride Home. Implement
Ride Home program 5 vanpools.
Operate commute 1 trip per feature, plus Implement Commute 8
assistance center one trip per hour Assistance Center in
staffed one of the two new
buildings, including
transit information,
computer kiosk with
links to transit and
rideshare information,
and on-site transit
ticket sales. Staff for 4
hours per day.
Installation of highband 1 trip per connection Coordinate with tenants 65
width connections to to install connections
employees' homes. for 5% of 1,300
employees.
Install a video 20 trips per center Install one video 40
conference center conference center in
each of 2 buildings
Coordinate TOM 5 trips Coordinate with 5
programs with existing existing Gateway
developments/ buildings and tenants
employers
Combine 10 elements 5 trips 5
TOTAL 568
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611 and 681 Gateway Traffic Study
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CCS
June g, 2000