Mobil Sta MacA-CS 890818
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... ALBERT H. HALFF ASSOCIATES, INC.
111111 ENGINEERS AND SCIENTl~TS
"LBERT H 'io\LFF. CHo\lRMAN or rHE BOARD
JOSE I NOvOA. PRESIDENT
RAUL WONG. JR. SENIOR VICE PRESIDENT
DON 0 AROC..; 'lICE PfIESIDENT
TROY LYNN LOVELL. VICE PRF.SIDENT
MARTIN J MOLLOY. VICE PRESIDENT
DAVID S MORGAN VICE PRESIDENT
WAL TEl.; E SKIPWITH. 'lICE PRESIDENT
JEFFREY" JACOB. SECRETARY
GEORGE PRALL. JR. TREASURER
P.. rRICK L KUNZ
"LaERT C PETRASEK. JR
JERRY F ROBERTS
AUG 1 8 1988
Ot.l.lAS . FORT WORTH. HOUSTON
H616 NORTHWEST PLAZA DRIVE
DALLAS. TEx..S 7522S
21~1739 0094
August 18, 1988
AVO 8175
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Valley Ranch Association, Inc.
3030 LBJ Freeway, Suite 1300
Dallas, Texas 75234
Att: Ms. Ann Czarnecki
t_~___..._._._______~..__._~............__^
Re: City of Coppell, Block 1 - Lot A
in Valley Ranch Center, prepared
by The Dimenison Group, Inc. for
Mobil Oil Corporation
Dear Ann:
Listed below are my comments regarding the referenced project in Valley
Ranch:
/1.
/2.
/3.
TRANSPORTATION
A.
Site Plan -
The proposed sanitary sewer does not conform to the utility plan
that was approved by the City of Coppello The approved plans call
for construction of approximately 30 L.F. of S-inch diameter
sanitary sewer and a 4-foot diameter manhole before downsizing to
a 6-inch diameter sanitary sewer to sene Lot A.
The Final Plat for Valley Ranch Center, which is filed in Volume
88035, Page l~~O of the Dallas County Deed Records, dedicated a
la-foot wide Texas Power & Light Ccmpany easement along the south
property line of Lot A. In addition. an approximately 10-foot by
15-foot Texas Power & Light Company easement was dedicated near
the southwest corner of Lot A. These easements are not reflected
on any of the drawings.
The Final Plat for Valley Ranch Center dedicated a 300-foot by 10-
foot right-of-way reservation for a future right turn lane along
the north proper1;y line of Lot A. This right-of-way reservation
is not reflected on the Site Plan.
WATER RESOURCES
LAND DEVELOPMENT
ENVIRONMENTAL
SURVEYING
MUNICIPAL
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Valley Ranch Association, Inc.
August 18, 1988
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111111
... ALBERT H. HALFF ASSOCIATES, INC.
111111 ENGINEERS AND SCIENTISTS
4. The location of a recently constructed 12-inch diameter water line
and a traffic controller in the vicinity of the northwest corner
of Lot A should be added to the drawings. The Engineer should
also add the proposed" utilities along the south side of Belt Line
Road to insure the Lot A improvements do not conflict with the
proposed utilities.
B. Grading Plan
/i. The rainfall intensity used in the runoff calculations is
lower than the intensity used in the design of Valley Ranch
Center. The Engineer should consult the City of Coppell
'Engineering Staff to determine if a higher rainfall intensity
should be used.
2. The location of all existing and proposed utilities should be
shown on the grading plan (see canment A-4).
c. Suney & Topographic Plat
1. The existing Texas Power & light Company easements are not
shown on the plat (see canment A-2).
D. Irrigation Plan
1. The irrigation plan calls for installation of irrigation
lines in the public utility easement and the Texas Power &
Light Company easements. It would be desirable to have
proposed City- of Coppe1.l and franchised utilities constructed
prior to installing irrigation lines and landscap ing. This
would eliminate the necessity of boring the driveways and
damaging the landscaping and irrigation lines. As a mmimum.
PVC slee~es should be installed under the driveway onto Belt
Line Road to accommodate proposed utilities.
This review is performed as a senice to Valley Ranch Association. Inc.
The review is performed to assure general compliance with the Civil
Engineering criteria established in the Valley Ranch Master Declaration of
Covenants. Conditions and Restrict ions. The review is also performed to
assure general conformance with existing paving and utilities. This is not
a detailed Engineermg review. There is no assurance t:o the Owner of the
property or the design Eng~eers that the plans will be approved by the City
of Coppell or that the design will provide the required utility capacities.
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111111
... ALBERT H. HALFF ASSOCIATES, INC.
111111 ENGINEERS AJ'lD SCIENTISTS
Valley Ranch Association. Inc.
August 18, 1988
Page 3
Albert H. Halff Associates, Inc. does not assume any liability for the
engineering design nor does approval by Valley Ranch Association. Inc. or
Albert H. Halff Associates, Inc. release the design engineer from liability
for correcting errors and omissions in his design both during and after
const rr.1C~ ion.
Please call if you have any questions.
Sincerely,
ALBERT H. HALFF ASSOCIATES, INC.
H.fn.~~
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