HomeMy WebLinkAbout20200825_Written Comments from Public Works UtilitiesFrom: David Sloan <dsloan@TAIT.COM>
Sent: Tuesday, August 25, 2020 4:36 PM
To: Ung, Rosalinh; 'Derek Picerne'
Cc: Campbell, Jim; Michael Tran; Patrick Coyle
Subject: RE: [External] Residences at 4400 VK Parking Structure - Written
Comments from Public Works & Utilities
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Rosalinh,
Thank you very much for coordinating and forwarding the public works comments regarding the
proposed parking garage and existing storm drain. We have had a chance to do further due diligence
review and team meetings regarding the storm drain alignment and have updated our project approach
as follows:
It is understood that the liability for the construction of the parking garage over the storm drain is a
concern of the City as a result of the currently unknown existing conditions of the storm drain as well as
the potential minor hydraulic constriction that would occur as a result of installing a storm drain liner
system. As a result, we have modified the development to now include the removal of the entire stretch
of 60”/66” RCP within the limits of the parking garage construction (~200 Linear Foot) as well as the
construction of a new 66” RCP storm drain in the identical alignment to match the hydraulic capacity of
the existing system while also matching the ultimate design life of the proposed parking garage which
will be built over it. The development will also draft and submit a transfer of liability document for the
City to review and execute in order to address the City’s concerns with the risk/liability of the structure
being built over the storm drain. The proposed improvements will include the construction of access
manholes at the beginning and end of the removal/replacement limits in order to allow future
maintenance and access to the storm drain system. Final hydraulics of the re-constructed portion of the
storm drain will be included in the final hydrology report to depict the ultimate capacity of the 66”
storm drain and to denote the proposed system matches and/or exceeds the capacity of the existing
system.
Could you please coordinate with the public works department in order to confirm the modified
approach and let us know if there are any further comments or questions? Please don’t hesitate to call
me on my cellphone if you or anyone from public works has questions and I will be happy to jump on a
call to help.
Thanks again for your time on this and I will look forward to getting final approval on the matter shortly.
David Sloan, PE| TAIT & Associates, Inc.
Vice President – Director of Engineering
701 N. Parkcenter Drive, Santa Ana, CA 92705
P: 714-560-8643 C: 562-547-0705
dsloan@tait.com | www.tait.com
From: Ung, Rosalinh [mailto:rung@newportbeachca.gov]
Sent: Wednesday, August 05, 2020 1:48 PM
To: 'Derek Picerne' <dpicerne@picernegroup.com>
Cc: David Sloan <dsloan@TAIT.COM>; Campbell, Jim <JCampbell@newportbeachca.gov>
Subject: [External] Residences at 4400 VK Parking Structure - Written Comments from Public Works &
Utilities
Derek,
Please see the attached comments from Public Works and Utilities Departments regarding the proposed
parking structure to be built over the existing storm drain. Let me know if you have any questions or
would like to discuss anything. Also, let me know if you would like me to help arrange any meetings with
City staff to discuss comments.
Thanks.
Rosalinh
ROSALINH UNG
Community Development Department
Principal Planner
rung@newportbeachca.gov
949-644-3208