SC-Coppell HS-CS 861205 817 336-5773
Metro 429-8306
TEAGUE NALLANDPERKINS
December 5, 1986 ~- ~ ' ~,~,,
Mr. Ed Powell, P.E.
City Engineer
City of Coppell
255 Parkway Boulevard
Coppell, Texas 75019
Re:
Preliminary Plat
Coppell High School
Dear Mr. Powell:
Thank you for meeting with Mike Jones, Jim Boughton and myself
regarding the comments from the Development Review Committee
(DRC) meeting held by the City staff on November 25, 1986. As
agreed in the meeting we are providing at this time written
response to these comments for the additional DRC meeting on
December 10.
DRC c~ents:
~/1. The developer, architect and engineer have been
added with names and addresses on the cover sheet.
All fire lanes shall be 6 inch reinforced concrete
pavement with the possibility of eliminating the 6
inch lime stabilization· The soils report indicates
a soil with a Plasticity Index ground 10. Thus once
the subgrade has been compacted, tests will be
performed to indicate the subgrade conditions.
The water surface elevation and the flood plain has
been added to the preliminary drainage plan. Upon
completion of final plat and on site topography, the
flood plain will be more accurately shown.
No formal approVal or HEC-II runs are necessary due
to the fact that no filling is being done~ in the
"floodway" "-~'-~---- = ::-~ ~=~'
· ~
All fittings have been shown on the preliminary
water and sewer layout and more detail will 'be
provided at time of submital of final plans.
915 Florence Street
Fort Worth, Texas 76102
Hr. Ed Powe11, P.E.
December 5, 1986
Page Two
6~'Additional information has been provided on the
drainage area map as required. A~s a~reed~ the
inch storm drain pipe stubbed up to area 0A-4 will
· ~maln to allow for future extension
drain this drainage area. This will be classified
as a public storm drain system.
In reference to the pilot channel proposed on the
east property line it is our recommendation that
although Rock Rip Rap is not shown in the standard
construction drawings, that, in this case, it is
needed to provide a transition from the concrete
/9..pilot to the grass side slopes. This will helpers
buffer the velocities and control erosi°n.
As requested, the amount of water entering the st rm
drain system has been shown on the drainage plans
.
9 Street names have been added to all sheets
Additional information has been provided on the
grading and drainage plan.
The letters of agreement requested from the adjacent
property owners for the outfall and drainage will be
provided at time of final platting. Presently
negotiations are being worked out between all
concerned property owners for receiving this
drainage.
The 10-foot utility easement requested by General
Telephone has been added to the preliminary plat·
However, prior to recording the final plat the exact
location and widths of all easements will be
finalized at that time.
13.
The detail requested for the master meter vault will
be submitted along with final construction plans.
Existing water line sizes have been added to the
drawings.
The valve requested on the private internal loop
fire line has been added to the system.
Service sizes have been added to the water and sewer
layout.
Hr. Ed Powell, P.E.
December 5, 1986
Page Three
17.
18.
A parking variance is being requssted at this rims
for the number of parking spaces required due to the
stadium capacity.
All storm drain, inlets, grates with their size,
type and capacity will be provided on fiuai pians.
As discussed in our meeting, it was agreed that the majority
of these comments submitted by City staff at DRC reflect
concerns to be addressed on the final plat. Therefore, these
concerns will be addressed during final design and at time of
submittal of the final plat. Thank you again for the time you
and your staff have devoted to review and coordination of this
project and we look forward to completing final construction
drawings with your staff.
If you have any questions or comments regarding any of these
comments, please do not hesitate to call.
Sincerely,
TEAGUE NALL AND PERKINS, INC.
Tom Rutledge
STR/ll
Enclosures
cci
David Stanfield
Jim Boughton