Grapevine Creek-CS 910917 ALBERT H. HALFF ASSOCIATES. INC.
ENGINEERS · SCIENTISTS · SURVEYORS
DALLAS · ARLINGTON · CHICAGO · FORT WORTH
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September 17, 1991
AVO 10565
City of Coppell
P.O. Box 478
Coppell, TX 75019
Attn: Ms. Shohre Daneshmand, P.E.
Acting City Engineer
Re: Gateway Business Park
Grapevine Creek Drainage Improvements
Construction Inspection Fees
Dear Ms. Daneshmand:
In response to your letter dated September 10, 1991, our request on behalf of the
Owner, Catellus Development Corporation, for a reduction in the calculated construction
inspection fees for this project is concerning the construction items on which the fee has
been based. On previous projects the construction inspection fee for the City of Coppell has
only been charged for items of work to be dedicated to the City of Coppell. For this project,
it is our understanding that the only item of work to be dedicated to and maintained by the
City of Coppell is the concrete drop structure itself. Accordingly, the following items of
work should not be included in the construction inspection fee calculation:
1. Clear & Grub and Excavation
26,000 C.Y. @ 2.25/C.Y. = 58,500.00
2. Rock Rip Rap
1,400 C.Y. ~ 65.00/C.Y. = 91,000.00
8. Hydromulch
6 Acres @ 3,375.00/Acre = 20,250.00
Subtotal $169,750.00
Note: Item 10A is not included as per your previous letter dated
September 10, 1991.
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ALBERT H. HALFF ASSOCIATES, INC.
ENGINEERS · SCIENTISTS · SURVEYORS
City of Coppell
September 17, 1991
Page 2
The items that should be included in the Construction Inspection Fee calculations are:
3. Structural Excavation
1 L.S. @ lll,700/L.S. = 111,700.00
4. Class C 400 psi Conc. for Cutoff Walls
100 C.Y. @ 200.00/C.Y. -- 20,000.00
5. Class C 400 psi Conc. for Block & Sill
170 C.Y. @ 250.00/C.Y. = 42,500.00
6. Class C 400 psi Conc. for Sidewalls
130 C.Y. @ 250.00/C.Y. = 32,500.00
7. Galvanized Pipe Rail
160 L.F. @ 25.00/ft. = 4,000.00
9. Two Rub Finish
1 L.S. @ 2,390.00/L.S. = 2,390.00
11. Select Backfill
940 C.Y. @ 7.50/C.Y. = 7,050.00
Subtotal $220,140.00
Construction Inspection Fee
for Items 3 thru 7, 9 and 11:
$220,140 @ 2.0% = $4,402.80
We understand and agree that the final inspection fee shall be based on the items
actually installed and as such is adjusted at the time of final inspection. However, we would
request that the items to be included in the construction inspection fee and the items of
work to be dedicated to the City of Coppell for floodway and maintenance purposes be
reviewed and agreed upon prior to the final inspection. Please note that the Owner will
dedicate the channel area to the City of Coppell for floodway and maintenance purposes,
if this is desirable to the City of Coppell, and as such the construction inspection fee of
$8,057.80 would be correct.
ALBERT H. HALFF ASSOCIATES. INC.
ENGINEERS · SCIENTISTS · SURVEYORS
City of Coppell
September 17, 1991
Page 3
In addition to this request, our client Catellus Development Corporation has not
received any comments on their letter to Mr. Allan Ratliff, City Manager from Mr. Wayland
Threadgfll dated August 27, 1991 concerning the maintenance agreement and easement
requirements for this project. Again these issues should be resolved as soon as possible.
The concrete work for the drop structure is complete. The remainder of the work is
anticipated to be complete and ready for final approval by the end of next week.
If you have any questions or require any further information concerning this matter,
please contact me. If a meeting to discuss these items would be beneficial, I will be glad to
arrange it.
Very truly yours,
ALBERT H. HALFF ASSOCI/kTES, INC.
Patrick L. Acker, P.E.
/jj
cc: Wayland Threadgill, Catellus
Gary L. Sieb, Dh'. of Planning & Comm. Serv.
Larry Davis, Construction Inspection
Bill Gibson, Gibson & Associates