HomeMy WebLinkAboutSP-23-022 - Supplemental - 0793 Shelburne Road (11)
Engineers Scientists Planners Designers
40 IDX Drive, Building 100, Suite 200, South Burlington, Vermont 05403
P 802.497.6100 F 802.495.5130 www.vhb.com
To: Dave Simendinger Date: November 7, 2022
Champlain Farms
Project #: 58835.00
From: Jenn Conley, PE, PTOE
Evan Haugh, EIT
Re: Retail Conversion of 739 Shelburne Road
Trip Generation
Introduction
VHB previously conducted a trip generation analysis for Champlain Farms’ proposed conversion of the service station
at 739 Shelburne Road to convenience retail. That analysis has been repeated for an alternate development program
with six fuel pumps and a 2,000 square foot store.
The site’s present use is an eight-pump fuel station attached to a two-bay auto service station. This proposal would
remove two fuel pumps, expand the building from 1,300 to 2,000 square feet, and change its use from auto service to
convenience retail.
Trip Generation
Trip generation estimates for this proposal were calculated using rates published by the Institute of Transportation
Engineers (ITE) in Trip Generation Manual, 11th Edition. The land use codes (LUCs) assumed for the existing and
proposed conditions were Gasoline/Service Station (LUC 944) and Convenience Store/Gas Station (LUC 945),
respectively. The Trip Generation Manual provides equations to estimate trips by either number of fuel pumps or by
gross floor area of the convenience store. Both results are presented below in Table 1.
Table 1 Trip Generation Summary
Existing Use
Proposed Use (Convenience Store/6 Fueling
position Gas Station)
Peak Period
(8 fueling position
Gasoline/Service Station) By Fuel Pumps By Gross Floor Area
Weekday Morning
Enter 41 48 41
Exit 41 48 41
Total 82 96 82
Weekday Evening
Enter 56 55 48
Exit 55 55 48
Total 111 111 96
Dave Simendinger Ref: 58835.00
November 7, 2022
Page 2
Conclusions
Of the two methods, trip generation by number of fuel pumps is more conservative. Even at the higher rate, trip
generation is at a similar level to the existing use with an increase of 14 trips in the AM peak hour and no increase in
the PM peak hour. This would have a negligible effect on US 7 in the morning and have no effect in the afternoon,
when US 7 sees its daily peak traffic.