Resopnse Letter0� Stantec
November 11, 2016
File: 1 981 101 1 1
Stantec Consulting Services Inc.
221 West Sixth Street Suite 600, Austin TX 78701-3411
Attention: John Denholm III, P.E., PTOE
Project Manager
Lee Engineering
3030 LBJ Freeway, Suite 1660
Dallas, Texas 75234
Dear Mr. Denholm,
Reference: Comment Response
White Chapel Village Delta Hotel Parking Study Review
Southlake, Tarrant County, Texas
This is our response to comments received from your office on November 2, 2016. We have reviewed
these comments and respond in the following manner:
Action Comments
6. Previously the study stated 10,810 square feet of meeting space was proposed within
the planned hotel. The study no longer details how many square feet of meeting space is
included in the proposed hotel. Please cite the planned square footage of meeting
space within the hotel that was used in the updated analysis.
The equivalent square footage for the Ballroom and Meeting Space have been provided
as footnote references within the memorandum.
7. The concept development plan included in the 2016-10-24 Delta Southlake Center S -P-
2 Zoning Submittal depicts the proposed Delta Hotel Development as well as the following
buildings and uses:
• Two (2) five (5) story office buildings with retail and parking below grade.
• One (1) six (6) story office building.
• A three (3) story parking garage with retail space.
• A separate retail space.
• It is important to recognize that the uses shown in the latest concept plan
are more intense than the uses analyzed in the traffic impact analysis
submitted and reviewed previously for the White Chapel Village Site. The TIA
should be updated to reflect the latest plan.
A meeting with the City and Lee Engineering to discuss the outcome of updating the TIA for
the purposes of improvements related to the hotel is requested.
Design with community in mind
November 11, 2016
Mr. Denholm III, P.E., PTOE
Page 2 of 5
Reference: Comment Response
8. The Concept Development Plan indicates that no cross access is planned to the adjoining
medical center property along either the eastern or southern property lines.
• The site plan that accompanied the traffic impact analysis included cross access in
at least one location.
• Shared access to the medical developments to the east and Highland Street to the
south are suggested to provide for safer and more efficient flow of traffic
accessing both properties.
We will provide (2) easements on the eastern side of our property line for future connection
to the medical development.
9. While not part of the subject property, no information about the size and intensity of the
adjoining medical developments was contained on the Concept Development Plan
page. We are unable to determine at this time if the shown medical uses match those that
were accounted for in the original traffic studies for the Forest Park Medical Development.
The a visual of the adjoining medical development was included based on staff request
but detailed information regarding the size and intensity of the adjoining medical
developments are not available at this time.
10. The operating status of the existing hospital on the property to the east is unclear in the
submitted traffic impact analysis for the White Chapel Village development. It is possible
that the hospital may have been operating at lower levels or may have already ceased
operations when the background counts were collected for the traffic impact analysis. It is
unlikely that a fully operational hospital has been adequately accounted for in the original
White Chapel Village TIA.
Per email scoping exchange between Josh Smith and John Denholm on April 2, 2015, the
full capacity of the eastern hospital was not discussed as background development or
suggested additional traffic to be included with the TIA.
11. The planned medical office building towers and structure parking on the medical site to the
east was not accounted for in the background traffic for the White Chapel Village Traffic
Impact analysis. The City should consider requiring the TIA to be updated in order to provide
an analysis that accounts for planned allowed medical -office uses in the vicinity.
Per email scoping exchange between Josh Smith and John Denholm on April 2, 2015, the
Forest Park Medical Development was not discussed as background development or
suggested additional traffic to be included with the TIA.
12. Previously we had commented that "The time of day distribution for the 10,810 square
Design with community in mind
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November 11, 2016
Mr. Denholm III, P.E., PTOE
Page 3 of 5
Reference: Comment Response
feet of meeting space does not appear reasonable as no vehicles are assumed to be
parked after 5:00 PM. An evening event for the space should be accommodated." The
applicant revised the study to use ULI Shared Parking demand percentages for a
conference center resulting in 50% of the conference center parking demand during the
6 PM hour, 30% from 7 PM to 9 PM and 10% during the 9:00 PM hour.
Lee Engineering still maintains that an evening event for the space should be
accommodated. Based on a review of Delta hotel meeting and space planning
information on the Marriott/Delta hotel websites, weddings are desired events for
the other locations in the Delta brand. Lee Engineering believes an evening event,
that fully utilizes the largest ballroom, such as a wedding, should be
accommodated by the site.
Notably, Shared Parking contains hourly time -of -day factors for
Conference/Banquet facilities within a Hotel as well as the Convention use. While
the study applied Convention though it would appear that Conference/Banquet is
more appropriate during the evening hours as demand is shown as 100% from 5:00
PM to 10:00 PM.
Previously Lee Engineering had commented that "The proposed site has 10,810
square feet of meeting space with an unknown mix of room and seating
configurations which would likely further increase the code required parking. More
information about the proposed meeting space is required in order to evaluate the
amount of parking necessary to accommodate the use." The parking study no
longer includes the total square footage of meeting space, no breakdown or
other detailing of the planned space is provided, and the study simply states that
540 seats are available in the conference center. Additionally, in a comment
response document, the applicant states that: "The parking ratio has been
changed to a seating ratio which provides a seating capacity that is consistent
other developments with similar land uses that have recently been approved and
developed within the area." Because the size of the meeting space has been
removed, the reasonableness of the selected number of seats and seating ratio
cannot be assessed. The seating ratio should be based on the planned hotel
configuration, or on similar Delta Hotel facilities.
Based on the information in the study, the Conference/Banquet use is more
appropriate than Convention. Convention use is applicable to hotel space that
can accommodate 1,000 persons or more. The study suggests only 540 persons
can be accommodated in the meeting spaces.
Design with community in mind
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November 11, 2016
Mr. Denholm III, P.E., PTOE
Page 4 of 5
Reference: Comment Response
The Parking Study has been updated to reflect the intended usage to the space as it
relates to Ballroom versus Meeting Space. Each space has been broken down by square
footage and seating based on planned hotel configuration. The time of day distribution has
been updated to include the Conference/Banquet as listed by the ULI Shared Parking
Manual.
13. Lee Engineering previously commented that the 85% non -captive adjustments for
restaurant and conference center "appear to be assumptions loosely based on the ULI
methodology. Please further indicate how these were obtained or assumed."
• Engineering judgement was cited in the comment response document as the basis
for the assumed non -captive adjustments. Sufficient evidence of the
reasonableness of the original 85% percent assumption for the conference center
was not provided.
• Furthermore, the non -captive adjustment for conference center was changed from
85% in the initial study to 25% in the study being reviewed.
i. The study included minimal justification for the reduction from 85% to 25%
concluding that "a large proportion of patrons of the conference center
are anticipated to lodge at the hotel and dine at the on-site restaurant,
therefore justifying the 25% non -captive adjustment factor." This change
in the non- captive ratio reduces the site's estimated parking needs by over
100 spaces and does not appear to be a reasonable assumption.
n. The 25% used in the study is applicable to Convention uses within a Hotel. This
site does not appear to be similar to the Convention use based on the
information presented in the study that only 540 seats are present in the
meeting spaces.
ui. Shared Parking recommends that a 60% non -captive rate be considered the
starting point for the conference/banquet use and shows a range from 60%-
70% for the meeting space associated with various hotel types.
iv_ Additionally, when you consider the 540 persons attending the meeting
space, a 25% non -captive rate would suggest that 405 people are staying in
the 240 rooms at the hotel. This would be an average of almost 1.7 persons
per room, far higher than the average of 1.2 persons per room presented in
Shared Parking.
An update to the non -captive adjustments and rational have been included within the
revised memorandum.
14. Previously Lee Engineering commented that "the shared parking analysis presented does
Design with community in mind
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November 11, 2016
Mr. Denholm III, P.E., PTOE
Page 5 of 5
Reference: Comment Response
not take into account the interaction of other land uses within the development such as the
planned office buildings and retail spaces. These usesshould be included in the analysis."
• The applicant's comment response indicates that "At this time, the land uses
currently presented are the only uses that are currently plonned to be built. It is the
developer's intent to complete an additional shared parking study as further land uses
are intended to be developed and constructed.
• Lee Engineering requested the parking analysis incorporate the entire
development and not just the Hotel site because Lee Engineering is of the
opinion that the Hotel portion of the site is underparked and that a shared
parking analysis for the entire development may indicate otherwise suitable
operations.
15. The parking study submitted does not sufficiently support the need for only 337 parking
spaces as proposed.
Please contact our office should you have any questions or if we can be of further assistance.
Sincerely,
STANTEC CONSULTING SERVICES INC.
/ R,
I M,
Nicola Gheno, P.E., PTOE
Civil Engineer
Phone: 512.328.001 1
Fax: 512.328.0325
Nicola.Gheno@stantec.com
Design with community in mind
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