HomeMy WebLinkAboutSD-21-28 - Supplemental - 3070 Williston Road (75)Stantec Consulting Services Inc.
193 Tilley Drive, South Burlington, VT 05403
Transportation Demand Management Plan (TDMP)
Proposed BETA Manufacturing Facility, South Burlington, VT
INTRODUCTION
This Transportation Demand Management Plan (TDMP) outlines strategies that the project
proponent, BETA, will use to minimize PM peak hour vehicle trip generation associated with the
above referenced project. It defines trip reduction goals and a traffic monitoring program to
measure actual site traffic generation. BETA is submitting this plan to earn a credit relative to the
South Burlington traffic impact fees as described in CITY OF SOUTH BURLINGTON, 2007 IMPACT FEE
ANALYSIS REPORTS: FIRE PROTECTION, ROADS, RECREATION, Prepared by Michael J. Munson, Ph.D.,
FAICP, October 12, 2007.
PROJECT DESCRIPTION
The proposed project is the construction of an approximately 344,000 square foot manufacturing
facility at Burlington International Airport with primary vehicular access by way of a new driveway
to be built to US 2 (Williston Road) east of Valley Road. Secondary vehicular access, for trucks, will
be available via Aviation Avenue. At full occupancy, the facility will house approximately 225
manufacturing employees (125 first shift and 100 second shift) and 250 office employees during
normal business hours. This is the first phase of a larger projects. A TDMP may also be developed for
later phases.
MANAGEMENT PLAN
BETA seeks to limit the number of vehicle trips generated at the project site and promote the use
of alternative modes of transportation while still accommodating the travel needs of its employees
and visitors. Independent of the environmental and health benefits associated with travel by
alternative modes, limiting the number of vehicle trips generated will help minimize offsite traffic
congestion impacts.
The BETA TDMP consists of the actions listed in the attached table. The expected impact of each
action on PM peak hour vehicle trip reduction is noted. These trip reduction factors were obtained
from TRANSPORTATION DEMAND MANAGEMENT (TDM) GUIDANCE, Vermont Agency of
Transportation Policy, Planning, and Intermodal Development Division, February 2016, Table 4.1.
(Table 4.1 from the guidance is attached.) Proposed actions include physical, operational,
financial, and organizational measures to minimize vehicle trip generation. The TDMP is expected
to reduce the number of PM vehicle trips by 24.5 percent.
TRIP GENERATION ESTIMATES
PM peak hour vehicle trip estimates for the proposed development were calculated based on
rates published by the Institute of Transportation Engineers (ITE) Trip Generation Manual, 11th
Edition. Employee-based trip generation rates for office and manufacturing land use codes (LUC),
LUC’s 710 and 140, respectively, were applied. Based on these calculations, the project is
expected to generate 226 PM peak hour vehicle trips. These figures were reported in the January
12, 2022, traffic impact study for the project that was prepared by VHB and reviewed by the South
Burlington Design Review Board.
March 21, 2022
TRAFFIC IMPACT FEE
The City’s impact fee policy allows it to assess transportation impact fees based on a
development’s expected PM commuter peak hour vehicle trip generation using ITE-based trip
rates. The current rate $999.86 per PM peak hour vehicle trip. Based on a forecast of 226 vehicle
trips using unadjusted ITE trip rates, the project obligation is $225,968.36. If the applicant commits
to implementing a travel demand management plan that includes a follow-up traffic survey, a
credit of up to 25 percent may be earned. As noted above, the TDMP is expected to reduce trips
by 24.5 percent, consequently, the applicant seeks a 24.5% reduction in the fee to $170,606.11.
With the 24.5 percent reduction, the expected PM peak hour vehicle trip generation is 171 trips.
The TDMP includes the post-build traffic monitoring program described below.
MONITORING PROGRAM
The performance of the proposed facility from a trip generation perspective will be monitored at
approximately two years from the project receiving an occupancy permit and achieving full
occupancy. Traffic counts will be taken to measure actual site vehicle trip generation. The count
program will include:
A count of vehicles entering and exiting the site by 15-minute intervals from 4 PM to 6 PM;
A 3:45 PM count of vehicles parked in priority, carpool spaces; and,
A 3:30 PM count of bicycles parked on site.
Counts will be taken for three typical weekdays. The applicant will notify the City of the count
dates in advance of conducting the surveys. The average peak hour volume for the three days
will be deemed the actual development PM peak hour trip generation. The applicant agrees that
if the actual trip generation exceeds 171 PM peak hour vehicle trips that a portion of the impact
fee credit must be paid to the City on a prorated basis.
Allowable Peak
Hour Trip
Reduction1
Proposed Action Reduction
Earned
Bus stop with shelter 2.0%New bus stop and shelter proposed on Williston Road proximate to site driveway 2.0%
Design site to support transit and walk access 4.0%Install both a sidewalk and a multi-use recreation path
leading from Williston Road to the main building entrance.
4.0%
Secure bicycle parking.1.0%Provide indoor bike parking/storage.1.0%
Bicycle racks only.0.5%Provide outdoor bike racks for short term parking.0.5%
Showers and lockers 1.0%Provide locker rooms and showers to support bicycle
commuting.
1.0%
Sidewalk or shared use path improvements 2.0%New on-site path proposed connecting to planned on-
airport paths.
2.0%
On-site amenities 1.0%On-site dining and telework capabilities will be provided.1.0%
Flextime 4.0%Multiple shifts for manufacturing. Flextime avaiable to
some office staff.
4.0%
Compressed work week 2.0%Available for a portion of office staff.1.0%Telecommuting 2.0%Available for a portion of office staff.1.0%
Preferential parking 0.5%Provide priotity parking for carpool participants.0.5%
Transit subsidies/discounts, >50% of fare 5.0%Provide company-sponsored Green Mountain Transit
(GMT) bus passes to employees.
5.0%
Marketing/information program 3.0%Orientation program for new employees will include
sharing of information regarding alternative travel modes
and incentives.
1.5%
24.5%
1 TRANSPORTATION DEMAND MANAGEMENT (TDM) GUIDANCE, Vermont Agency of Transportation Policy, Planning, and Intermodal
Development Division, February 2016, Table 4.1
TDM Measure
Physical
Operational
Financial
Organizational
Travel Demand Management Plan
BETA Manufacturing Facility
South Burlington, VT
6-Apr-22
TOTAL