HomeMy WebLinkAboutItem 11d - Adopting Updated Vehicle Miles Traveled
DATE: April 16, 2024
TO: Honorable Mayor and City Council
FROM: Jason Kruckeberg, Assistant City Manager/Development Services Director
Prepared By: Lisa Flores, Deputy Development Services Director
SUBJECT: RESOLUTION NO. 7548 ADOPTING UPDATED “VEHICLE MILES
TRAVELED” THRESHOLDS OF SIGNIFICANCE FOR PURPOSES OF
ANALYZING TRANSPORTATION IMPACTS UNDER THE CALIFORNIA
ENVIRONMENTAL QUALITY ACT (“CEQA”)
CEQA: Exempt
Recommendation: Adopt
SUMMARY
In 2020, the City of Arcadia, with guidance from the San Gabriel Valley Council of
Governments (“SGVCOG”), adopted new California Environmental Quality Act (“CEQA”)
thresholds of significance for transportation impacts, due to changes in State law pursuant
to Senate Bill 743 (“SB 743”). These changes modified how the City evaluates projects
for transportation impacts for the purposes of CEQA. Specifically, the City is required to
use Vehicle Miles Traveled (“VMT”) instead of Level of Service (“LOS”) as the metric to
evaluate transportation impacts in CEQA documents.
This report describes the changes in VMT as they impact the City thresholds of
significance, discusses the SGVCOG recommendations, and recommends modifying the
CEQA transportation thresholds to remain compliant with State guidance and to better
align with the City’s policies, goals, and objectives. It is recommended that the City
Council find that the proposed update to the VMT Thresholds of Significance will not have
a significant environmental impact and is exempt from CEQA pursuant to Section 15308
of the CEQA Guidelines; and adopt Resolution No. 7548 updating the VMT thresholds of
significance for purposes of analyzing transportation impacts under CEQA.
BACKGROUND
In March 2020, the City entered into a Memorandum of Agreement with the SGVCOG
to participate in the San Gabriel Valley Regional VMT Analysis Model. Arcadia is one of
26 SGVCOG member cities that opted into the SB 743 implementation process.
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April 16, 2024
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On June 16, 2020, the City Council approved Resolution No. 7312 adopting VMT
significance thresholds for three different VMT metrics pursuant to guidance provided
by the State’s Office of Planning and Research (“OPR”). The three primary thresholds
and criteria are:
• Project Screening Criteria – Criteria for screening projects that do not have a
regional impact.
• Baseline VMT Thresholds – Three VMT thresholds, home-based VMT
(“VMT/capita”), employment generated VMT (“VMT/employee”), and the total VMT
per service population (“VMT/SP”), from which to evaluate three types of
development projects: residential, employment, and mixed-use/regional projects.
Arcadia selected the thresholds from the COG Northwest Sub-region as the most
reasonable for its baseline.
• VMT Significant Impact Thresholds – Significant impact thresholds were adopted
for four categories, Land Use Plans, Land use Projects, Retail Projects, and
Transportation Projects, as recommended by OPR.
Following adoption of VMT thresholds by the 26 SGV cities, a SGVCOG VMT Evaluation
Tool was developed for the participating cities to use for assessing the potential VMT
impacts of proposed projects. The tool is a computer program that operates by entering
parcel-specific development parameters to assess the extent of a specific project’s VMT
impact. The tool also provides a menu of mitigation measures intended to reduce the
project’s impact to an acceptable level, and/or allows the user to select a combination
of variables to achieve the desired level. Variables that can be entered include project
features like affordable housing units, increasing housing and/or employment densities,
improved bicycle, pedestrian, and transit accessibility, and traffic calming measures.
Also included in the model are Transportation Demand Management strategies like
incentives for alternative travel modes, ridesharing, bike-sharing, vanpools, transit
subsidies, and alternative work schedules.
The current SGVCOG VMT Evaluation Tool is based on VMT outputs from the 2016
Regional Transportation Plan/Sustainable Communities Strategy (“RTP/SCS”) trip-
based model that was developed by the Southern California Association of
Governments (“SCAG”), and it needs to be updated to be consistent with the 2020
model. As with every RTP update, the regional travel demand model is updated to
reflect the latest population, employment, and traffic count information (socioeconomic
data) from SCAG.
The SGVCOG participating cities were aware that the model would be changing from
transportation-based to activity-based and had anticipated that the change may prompt
cities to change the adopted baseline for their VMT significance thresholds. In particular,
there were significant changes to “low VMT areas” or areas where, generally, there is a
mix of uses and urban intensity that reduce vehicle trips or miles traveled as the trips
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are “bundled” between uses. In short, projects in Low VMT areas generally require less
environmental screening than other areas, so regularly updating the data will ensure
that environmental reviews are conducted with the latest and most relevant information.
The proposed action acknowledges and plans for the following:
• Every four years the SCAG RTP/SCS will be updated prompting an update to the
regional travel demand model.
• The City’s low VMT areas are based on the SCAG model.
• Low VMT areas under each of the three geographic baselines that Arcadia falls
under (Arcadia, SGVCOG Northwest Sub-region, and entire SGVCOG Region)
are likely to change when the SCAG model is updated; and
• The City intends to use the baselines that maximize the number of “low VMT”
screening areas to set the most achievable bar for reaching a given threshold.
DISCUSSION
The purpose of this action is to consider reevaluation of the City’s three baseline VMT
thresholds – VMT per capita, employment generated VMT, and the total VMT per service
population – based on the results of periodic RTP/SCS model updates. As a reminder,
the City can elect to use the baseline thresholds from either the local (Arcadia),
subregional (SGVCOG Northwest Sub-region) or regional (entire SGVCOG) geographic
areas. Upon each model update, the City will be able to change any or all the baseline
VMT thresholds by selecting the highest threshold of the three geographic areas to best
allow the City to maximize the number of “Low VMT” screening areas as mentioned
above.
All three of Arcadia’s current baseline VMT thresholds are from the SGVCOG Northwest
Sub-region. Pursuant to the OPR Guidance, cities can adopt the three baseline VMT
thresholds from different geographic areas, but the employment based VMT thresholds
should use either sub-regional or regional baselines. Based on the results from the 2020
RTP/SCS activity-based model, the following baseline VMT threshold changes are
proposed:
• Home-based VMT (VMT/capita): No change from the previous designation of the
SGVCOG Northwest Sub-region.
• Employment generated VMT (VMT/employee): Change from the previous
designation of the SGVCOG Northwest Sub-region to the SGVCOG Region.
• Total VMT per service population (VMT/SP): Change from the previous
designation of the SGVCOG Northwest Sub-region to the SGVCOG Region.
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Upon future RTP/SCS model updates, the adoption of Resolution No. 7548 will allow for
administrative changes to the three geographic baseline VMT thresholds as outlined
above from the 2020 update. This will allow the City to select the highest geographic
baseline thresholds to continue to maximize the number of “Low VMT” screening areas.
This sets the most achievable bar for reaching a given threshold, allowing the City to
review and approve projects that both align with the City’s General Plan and meet CEQA
requirements in a timely manner.
ENVIRONMENTAL ANALYSIS
The adoption of new local CEQA thresholds of significance for transportation impacts and
the adoption of new Local Transportation Assessment Guidelines will not have a
significant environmental impact, and are exempt from CEQA pursuant to Section 15308
of Title 14 of the California Code of Regulations because the two actions are undertaken
by the City for the protection of the environment. The revised CEQA thresholds will be
compliant with SB 743 and will be used in a regulatory process (CEQA process) that
involves procedures for the protection of the environment. Therefore, it is recommended
that the project be found exempt from environmental review requirements of CEQA
pursuant to Section 15308.
FISCAL IMPACT
There is no fiscal impact to the City as a result of this action.
RECOMMENDATION
It is recommended that the City Council find that the proposed update to the VMT
Thresholds of Significance will not have a significant environmental impact and are
exempt from CEQA pursuant to Section 15308; and adopt Resolution No. 7548 updating
the “Vehicle Miles Traveled” thresholds of significance for purposes of analyzing
transportation impacts under the California Environmental Quality Act (“CEQA”).
Attachment: Resolution No. 7548