Discovery Park Phase 2
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Ada County Highway District • 3775 Adams Street • Garden City, ID • 83714 • PH 208 387-6100 • FX 345-7650 • www.achdidaho.org
Kent Goldthorpe, President
Dave McKinney, Vice-President
Jim D. Hansen, Commissioner
Mary May, Commissioner
Alexis Pickering, Commissioner
July 7, 2021
John Ringert, P.E. (Email)
Kittelson & Associates
101 S. Capitol Boulevard, Suite 600
Boise, ID 83702
Subject: Discovery Park Phase 2 Traffic Impact Study
The Ada County Highway District staff has completed the initial review of the submitted traffic
impact study (TIS) for Discovery Park Phase 2. Comments/recommendations provided by District
Traffic Services and Planning Review staff are listed below:
1. The LOS for the northbound left turn lane in Table 3, the intersection of the Existing
Park Access and Lake Hazel Road should be revised to reflect LOS C instead of D in
the Saturday midday peak hour based on the Synchro reports in the appendix.
2. The study should be revised to include an analyze the new access proposed on the
collector roadway.
3. If the intersection of New Collector and Lake Hazel Road is not signalized, the need for
a potential pedestrian crossing on Lake Hazel Rd should be evaluated. However, signal
warrants are expected to be met and staff recommends that this intersection be
signalized to serve the collector, pedestrians, and emergency vehicles exiting the future
fire and police station.
4. The applicant should provide an analysis of the New Collector & Lake Hazel Road
intersection that includes the new access on the proposed collector and assumes that
the existing driveway on Lake Hazel Road is removed for the total traffic condition. If the
intersection with mitigation and the new driveways on the new collector are expected to
operate acceptably, it is likely that staff would recommend that the existing driveway on
Lake Hazel be closed for access management purposes consistent with ACHD’s prior
action on Discovery Park Phase 1, unless emergency services objects and provided
written documentation. The study cites concern of potential conflict between emergency
vehicles and park traffic on the proposed collector, but there would be minimal issues.
Please let me know if you have any questions.
Sincerely,
Mindy Wallace, AICP
Planning Review Supervisor
Development Services
Cc (email): Bill Parsons – City of Meridian
Mike Barton – City of Meridian
Ross Erickson – Erickson Civil