RE North Lake Dam -- Two QuestionsThanks for the quick response, Keith. We’ll adjust the plans
accordingly.
Patrick Miles, P.E.
Water Resources
Freese and Nichols, Inc.
4055 International Plaza, Suite 200
Fort Worth, Texas 76109
817-735-7236
817-735-7483 fax
www.freese.com
From: Keith Marvin [mailto:KMarvin@coppelltx.gov]
Sent: Wednesday, October 09, 2013 4:00 PM
To: Patrick Miles
Cc: Kenneth Griffin; John Rutledge
Subject: Re: North Lake Dam -- Two Questions
Patrick,
We do not want to install a ladder in this manhole. We will bring the
appropriate confined space access equipment with us if we need to enter
the space.
I'm not sure we have enough information to define the limits of removal
for the "improvements" out there. Let's leave that off.
Keith
Keith Marvin
City of Coppell
On Oct 9, 2013, at 3:40 PM, "Patrick Miles" <jpm@freese.com
<mailto:jpm@freese.com> > wrote:
Ken & Keith-
We are going through the final details of the plans and
specifications, and two questions have come up:
1) As we’ve mentioned regarding the internal drainage
system for the dam, there is a manhole that will need to be extended
vertically to account for the slope flattening. The depth of the manhole
will increase from about 10 feet to about 20 feet. As such, we will need
to provide some sort of fall protection system for the ladder. We’re
proposing two options for meeting that requirement (1) a mobile tripod
and cable system for lowering a person down the manhole that can be
brought to the site (and used elsewhere, if needed) or (2) a harness bar
installed down the rungs to clip onto. Does the City of Coppell have any
standards, requirements, or preferences for this? How have you addressed
this in the past?
2) At one point, you guys had mentioned taking out the
picnic pavilion just south of the existing spillway. Is that something
you’d still like us to include on the demo sheet?
Feel free to give me a call if you’d like to discuss either of
these items further. Thanks.
Patrick Miles, P.E.
Water Resources
Freese and Nichols, Inc.
4055 International Plaza, Suite 200
Fort Worth, Texas 76109
817-735-7236
817-735-7483 fax
www.freese.com
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