Daniel,
On Item 1, the Town would gladly provide an acceptance letter for the portion of storm sewer outlined in blue given that there will be an opportunity to address any issues with the system
once the paving is complete and the storm sewer system has been TVed.
On Item 2, we are concerned that without the detention area any rainfall in the area would produce flooding. Providing a portion of the detention offers protection against the majority
of storms in North Texas and appears to be a viable option. The staging area would need to be as small as possible in order to provide the greatest protection against flooding. Please
be aware that this option is not without risks for which the Town cannot be held liable.
If you have any additional questions or need any additional information, please let me know.
Thanks,
Clay Barnett, P.E.
Town Engineer
Town of Addison
16801 Westgrove Drive
Addison, TX 75001-2818
Office: (972) 450-2857
From: Daniel Zunker [mailto:danielz@embreydc.com]
Sent: Thursday, August 11, 2011 6:35 PM
To: Clay Barnett
Cc: david.meyers@kimley-horn.com
Subject: FW: Keller Springs Lofts
Clay,
Attached is an exhibit that will help explain a couple comments about construction staging, detention, and releasing existing drainage easements:
1. As we discussed, I’m trying to figure out how to get the City to formally “accept” drainage improvements that allow for the Fedex and State Farm surface drainage easements to
be released prior to digging the pond (or, worst case scenario, prior to digging part of the pond). Highlighted in blue is the series of storm sewer that David Meyers believes will
handle the off-site drainage from Fedex and State Farm. Once we put this storm sewer in, will the city issue an “acceptance letter” that I can present to State Farm and Fedex to get
them comfortable that their surface drainage easements are no longer necessary? We don’t believe we need either State Farm or Fedex to formally sign-off on the release of the easements,
but we’d like to have a letter from the City acknowledging that the work has been accepted just in case someone asks.
2. We talked about construction staging and I got a little too aggressive in my comments about putting our construction trailer and storage yard in the detention pond. My guys
noted that while we may not flood the trailer it will be a major mess to try to navigate through slop when we get a little rain and anything stored in the area has the potential to be
damaged by sitting water. It will also be very hard to navigate trucks and bobcats through the mess to get to materials. So, we’d kindly ask you to consider 2 options:
a. Option 1 would be to allow us to build the pond at the end of the construction process to give us maximum area to park, store materials, and locate a construction trailer.
If you can’t get comfortable with that option, then:
b. Option 2 would be to allow us to dig +/- 50% of the pond up front and leave the balance of the pond (outlined in red) at current grade to give us some level area for trailer
and material storage. We would then come back and complete the balance of the pond towards the end of construction. The area shown follows the 640 contour line.
When you’ve had a chance to review, would you call me to discuss your thoughts? I’d appreciate it. 210-386-0062.
DZ
From: david.meyers@kimley-horn.com [mailto:david.meyers@kimley-horn.com]
Sent: Thursday, August 11, 2011 5:25 PM
To: Daniel Zunker
Subject: Keller Springs Lofts
Daniel,
Attached is the sketch of minimal storm sewer to be constructed to handle off-site drainage and an approximate construction yard area.
You were going to forward to Clay with further explanation.
I am working on Dennis’ idea on the dog park.
Thanks
David Meyers, PE
12700 Park Central Drive, Suite 1800
Dallas, TX 75251-1516
Direct: 972-776-1766 / Ph: 972-770-1300
Cell: 972-322-2293 / Fax: 972-239-3820
e-mail: david.meyers@kimley-horn.com