WA9903-CS000522GENER2
CONTRACTORS
SUPERIOR SERVICES WITH AN EXCEPTIONAL TEAM
May 22, 2000
Mr. Gary Hendricks, P.E.
Shimek, Jacobs & Finklea
8333 Douglas Avenue
Dallas, TX 75225-5816
Re: Village Parkway Pump Station
Gary,
On May 17, 2000 we were made aware of a problem in operating the 24" butterfly
valves on the discharge header. We have discovered the piping is too small for the
butterfly valves to operate properly. We need to know how to proceed with this problem
in order to schedule the staff up of the new pump and meet our contract deadline.
If you have any questions, please call.
Respectfully,
Steve Dake
Project Manager
SD:jr
Cc: Mr. Glenn Hollowell, P.E.
Mr. Larry Davis
99048-2.doc
300 WEST RAMSEY * P.O. BOX 11586 · FORT WORTH, TEXAS 76110 · 817-926-4377 · METRO 429-8191 · FAX 817-926-4387 , E-MAIL auieauigc.corn
SHIMEK, JACOBS & FINKLEA, L.L.P.
CONSULTING ENGINEERS
8333 Douglas Avenue, #820
RONALD V. CONWAY, P.E.' -
JOHN W. B1RKHOFF, P.E.
JOE R. CARTER, P.E.
GARY C. HENDRICKS, P.E.
PAUL A. CARLINE, P.E.
MATt HICKEY, P.E.
ROSS L. JACOBS, P.E.
I. C. FHqKLEA, P.E.
JOHN R. BAUMGARTNER, P.E.
Dallas, Texas 75225-5816
Fax(214)361-0204
May 22, 2000
Phone(214)361-7900
Transmitted via Facsimile
Mr. Steve Dake
Architectural Utilities, Inc., dba AUI General Contractors
300 W. Ramsey
Fort Worth, Texas 76110
Re: City of Coppell
Addition of Pump Number 4 at the' Village Parkway Pump Station
Dear Mr. Dake:
You have recently made us aware of the isolation valve situation on the Addition of Pump Number 4 to the
Village Parkway Pump Station project. Based on our discussion with you, we understand the 20-inch
butterfly valve on the discharge side of Pump Number 4 and the 30-inch butterfly valve on the suction side of
the same pump will not fully open. You indicated that is caused by the pump station piping which is
constructed of steel pipe with a cement mortar lining. Steel pipe diameters less than 30 inches are normally
specified using the outside diameter of the pipe rather than the inside diameter. With the addition of the
cement mortar lining to the pipe, the butterfly valve disk cannot be rotated to the fully opened position.
In you letter to us dated May 22, 2000, you indicated the same problems exists on the recently installed 24-
inch'butterfly valves on Pumps I, 2 and 3. However, at this stage we understand these valves were "forced"
to a fully open position by City staff.
On the 20-inch and 30-inch valves, we recommend the spool pieces on the pump side of the valves (pipe
pieces O and P on plan sheet CA, or piece numbers 102 and 107 on the shop drawing submittal) be removed-
and the cement mortar lining be chipped away the minimum distance necessary to clear the valve. The
disturbed areas inside the pipe are to be coated and fully cured with two coats of Tnemee 140 Pota-Pox, or
approved equal.
On the 24-inch butterfly valve, since these have now fully open, we recommend they be tested for leakage
across the valve. We suggest each valve be closed one at a time along with the suction side valve. Remove
the pressure gauge on the pump discharge piping and check for water flow out of the pressure gauge tap. If
the any of the valves are leaking, we recommend the repairs be postponed until the off-peak water demand
seaion late this next fall.
l~~cal~l\1999-153~lette~i~.onstXk'dnolntion valves. doe
Mr. Steve Dake
Architectural Utilities, Inc.,dbaAUIGener~ Con~actors
May22,2000
PageNumber 2
Please proceed with modifications to the piping for Pump Number 4 at your earliest convenience and provide
us with your revised schedule for the completion of the project.
Sincerely yours,
CC:
Mr. Glenn Hollowell, P.E.
Mr. Larry Davis
Gary C. Hendricks, P.E.
GENERAL
CONTRACTORS
SUPERIOR SERVICES WITH ~N EXCEPTIONAL TEAM
May 23,2000
Mr. Gary Hendricks, P.E.
Shimek, Jacobs & Finklea
8333 Douglas Avenue
Dallas, TX 75225-5816
Re: Village Parkway Pump Station
Gary,
I appreciate your quick response in resolving the problem with the butterfly valves. Based on
your procedure, I estimate it will take an additional two weeks to complete the work on the
20" and 30" piping. It will take approximately two days to disassemble and remove the grout,
eight days for cure time for the TNEMEC 140 Pota-Pox coatings and then two days for
reassembling. We will also need to include any lost time in processing this change.
Cost for this work on the 20", 30" and 24" piping if needed, will be $1,765.25 per pipe.
Cost breakdown:
Supervision 352.00
3 men -a~lays labor I 624.00 3
Labor Burden ~, 4 390.00 !
Coatings 7:,.C0
Material (Bolts & Gaskets) 64.25
15% Overhead &Profit 225.00
Bond 35.00
Total 1,765.25
The cost for the 24" butterfly replacement parts are $700.00 each, if needed.
Ifyou have any questions, please call.
Respectfully,
Steve Dake ......
Project Manager .-..~'7,...
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99048-4.doc
300 WEST RAMSEY , P.O. BOX 11586 · FORT WORTH, TEXAS 76110 * 817-926-4377 * METRO 429-8191 · FAX 817-926-4387 * E-MAIL auiQauigc.corn
SHIMEK, JACOBS & FINK! EA, L.L.P.
CONSULTING ENGINEERS
8333 Douglas Avenue, #820
RONALD V. CONWAY. P.E.'
JOHN W. BIRKHOFF, P.E.
JOE R. CARTER, P.E.
GARY C. HENDRICKS, P.E.
PAUL A. CARLINE, P.E.
MATt HICKEY, P.E.
ROSS L. JACOBS, P.E.
I.C. FI/qKLEA, P.E.
JOHN R. BAUMGARTNER, P.E.
Dallas, Texas 75225-5816
Fax (214) 361-0204
May26,2000
Phone (214) 361-7900
Mr. Steve Dake
Architectural Utilities, Inc., dba AUI General Contractors
300 W. Ramsey
Fort Worth, Texas 76110
Re: City of Coppell
Addition of Pump Number 4 to the Village Parkway Pump Station
We are in receipt of your letter dated May 23, 2000 concerning the cost of the corrections to the piping
system adjacent to the recently installed butterfly valves at the Village Parkway Pump Station. As we have
discussed over the telephone, we are of the opinion that the City of Coppell bears no responsibility for the
extra work required to implement these corrections. After reviewing the project specifications, we find the
30-inch piping system should have been supplied and installed with the inside diameter of the pipe being 30-
inches in diameter. Your shop drawings indicate the pipe is measured using the outside diameter rather than
the inside diameter. As such, all cost associated with corrections to the 30-inch piping shall be borne by you.
For the corrections to the 20-inch piping, ShimeL Jacobs & Finklea, L.L.P. hereby agrees to cover the cost
associated with the necessary modifications. We offer no objections to the estimated cost outlined in your
letter; however, since there is some shared responsibility in the modifications, we propose you eliminate the
line item for overhead and profit. In addition, based on our discussions with you today, we understand the
time required to complete the modifications may be as little as one-half of your original estimate. Please
provide verification of crew hours, materials and equipment when submitting your invoice to our office.
As stated in our letter dated May 22, 2000, we recommend the 24-inch valves be tested for leaks and a report
made back to us prior to finalizing the scope of work required on these valves.
If you have any questions or need additional clarification, please do not hesitate to contact this office.
Sincerely yours,
Gary C. P.E.
cc: Mr. Glenn D. Hollowell, P.E ' Mr. Larry Davis
~csl~opl~ll\1999-153Xl~aer~Xconstxl~butm'fiy valve piling