Gateway BP(1.1)-CS 910806U ALBERT H. HALFF ASSOCIATES, INC.
N MI ENGINEERS SCIENTISTS SURVEYORS
N MI DALLAS ARLINGTON CHICAGO FORT WORTH
8616 NORTHWEST PLAZA DRIVE DALLAS. TEXAS 75225
214739 -0094 August 6, 1991
AVO 10565
City of Coppell
P.O. Box 478
Coppell, TX 75019
Attn: Ms. Shohre eshmand,
Acting C' ngineer
Re: Gateway Business Park Estimated Construction Cost
Grapevine Creek Drainage Improvements
Coppell, Texas
Dear Shohre:
Please find enclosed a copy of the Bid Form and Change Order No. 1 for this project. It is our
understanding that the 2% project fee to the City of Coppell is to offset the City's costs for inspection.
The grading for this project is approximately 75% complete to date and has not required any inspection
to date. The grading inspection, if any, will be extremely minimal. The clearing and grading is complete
and required no inspection. The structural excavation has been completed and did not require inspection.
The accelerated schedule reflects the Contractor's cost for cutting the project time by 70 calendar days
in order to complete the project by the end of September and should simply reduce the City's costs. The
hydromulching will not require City inspection. The rock rip rap would require only a minimal amount of
inspection time, if any.
The items that we feel should be included in the inspection fee are the Class C 4000 psi
reinforced concrete for the structure, the galvanized pipe rail, the two rib surface finish and the select
backfill. These items are all directly associated with the structure as opposed to the channel. The
contract total for these items is $108,440.00. A 2% inspection fee for these items is $2,168.80. Please
note that this contract time for this project is 60 calendar days.
rJj
Enclosures
If you have any questions, please contact me.
cc: Wayland Threadgill, Catellus
Bill Gibson, Gibson Associates
Very truly yours,
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ALB H. HA).FF ASSOC TES, INC.
Patrick L Acker, P.E.
TRANSPORTAT WATER RESOURCES LAND DEVELOPMENT MUNICIPA_ ENVIRONMENTAL_
SURVEYING GLOBAL POSITIONING SYSTEM (G P.S I REMOTE SENSING AND MAPPING
LANDSCAPE ARCHITECTURE PLANNING
STRIiCTU PAL