1987-0880923L
AN ORDINANCh AUTHORIZING THE EXECUTION OF A CHANGE ORDER TO A
CONTRACT BETWEEN THE CITY OF DENTON AND CALVERT PAVING COMPANY,
AND PROVIDING AN EFFECTIVE DATE
WHEREAS, on February 18, 1986, the City awarded a contract
for the construction of certain improvements to the Yellowstone
and Sheraton Drainage Project, and
WHEREAS, the City Manager having recommended to the Council
that a change order be authorized to amend such contract and
sa~d change order being in compliance with the requirements of
art 2368a, V A C S , NOW, THEREFORE,
BE IT ORDAINED BY THE COUNCIL OF THE CITY OF DENTON
SECTION I That the change order to the contract between
the ~ity and Calvert Paving Company in the amount of N~neteen
fhousand Two Hundred and Seventy-eight Dollars ($19,278) is
hereby approved and the expenditure of funds therefor ~s hereby
authorized
bBCTION II That this ordinance shall become effective
immediately upon its passage and approval
PASSED AND APPROVED this the 12th day of May, 1987
ATTEST
APPROVED AS TO LEGAL FORM
DEBRA ADAMI DRAYOVITCH, CITY ATTORNEY
CITY OF DENTON, TEXAS
BY
CITY COUMCIL REPORT
DATE May 12, 1987
TO
Mayor and Members of the City Council
FROM
SUBJECT
Lloyd V Harrell, City Manager
BID# 9575 YELLOV/STONE SHERATON DRAINAGE
P O tb 72432 CHANGE ORDER lb2
RECOI~IEItDATIOIt We recommend th,s change order be approved for $19,278 O0 to
Calvert Paving, the Contractor for the pro)eot
SUI~qARY The original cost o~ this project with Change Order #1-$14,495 00,
was $681,381 42 When we add this Change Order for $19,278 00 the total pro)ect cost
wall be $700,659 42 This Change Order is to cover the items explained on the at-
tached memo ~rom David Salmon
BACKGROUND,,
Memorandum - David Salmon, Eng,neering Dept,
PROGRAMS, DEPARTIqENTS OR GROUPS AFFECTED
Street and Drainage Improvements
FISCAL II,ACT
Account # 432-002-0010-5118-9100
There is no additional impact on the General Fund
Respectfully submitted
Lloyd V Harrell
City Manager
Prepared by
Marshall,
Title Purchasing Agent
Approved
~Name \~'~ot~n 3 Marshall,
Title Purchasing Agent
CITY of __ ITON / 215 E MGKInne¥ / Denton, Texss 76201
M~4ORANDUM
DATE
TO
FROM
May 6, 1987
Rick Svehla, Deputy City Manager
David Salmon, E I T /C~v~l Engineer
SUBJECT Sun Valley Flume
The flume was originally constructed to allow trash veh, cle
access in the rear of the subdivision Loads from the trash
vehicles destroyed this flume so we added it to the contract to
allow all the ma3or drainage systems in the basic vicinity to
be upgraded ~ork started on the pro3ect several times but
weather created problems When a few good days occurred in
early April, the contractor hurried to get some work done In
our haste, the contractor and City crews made combined
surveying errors that compounded some basic design errors in a
582 foot section of the flume Our inspector did not catch the
grade difference so the flume was poured much too high It was
determined after significant evaluation, that the flume had to
be removed and replaced We also decided to lower the 200 foot
section that had been designed too high to guarantee that the
flume would work to catch all water from ad3olnlng properties
As part of the redesign, Kings Row had to be lowered with
transitions back east and west to allow reasonable slopes to
the low point Costs for the modifications follow
Item quantity
Remove Concrete Flume
Install Concrete Flume
Pumping ~ Liming
Unit Price Total
711 sy $ 8 S0/sy
711 sy $18 00/sy
Lump Sum 4,000 00
GRAND TOTAL
$ 6,046 00
$12,804 00
$ 4,000 00
$2Z,850 00
Because both the City and the contractor were in error, it was
decided to share the cost of removing and replacing the flume
Calvert Paving agreed to deduct $9,500 00 from the price of
removing and replacing the flume and to split the cost of
pumplns,and liming which is $4,000 O0
ge 2 of 2 pages
The cost of the original £1ngs Row design and the cost of the
new design is as follows
Irem
Remove Concrete Pavement 70 sy $ 8 SO
Remove Conc Curb ~ Gutter 40 1£ 2 SO
Unclassified Excavation 60 cy 5 00
Trev~ra 130 sy 90
3 1/2" Asphalt 130 sy 7 50
1 1/2" Asphalt 130 sy 3 SO
8" Asphalt Valley Gutter 40 sy 14 00
Saw Cut Ex~st~ng Concrete 8 If 1 00
Concrete Curb ~ Gutter 40 If 10 00
quantity Unit Price Total
$ 595
100
3OO
O0
O0
O0
117 O0
975 O0
465 O0
560 O0
8 O0
400 O0
TOTAL
$3,510 00
NEW DESIGN
Remove Concrete Pavement 70 sy
Remove Conc Curb ~ Gutter 240 if
Remove Conc Driveway ~ 40 sy
Sidewalk
Unclassified Excavation 170 sy
Trev~ra 500 sy
3 1/2" Asphalt 460 sy
1 1/2" Asphalt 460 sy
8" Asphalt Valley Gutter 40 sy
Concrete Curb ~ Gutter 40 sy
Concrete br~veway 40 sy
Saw Cut Existing Concrete 8 If
$ 8 SO $ 595 O0
2 50 600 00
8 SO 340 00
S O0 850 O0
90 450 O0
7 50 3,450 O0
3 50 1,610 O0
14 O0 560 O0
10 O0 1,900 O0
25 O0 1,000 00
1 00 8 00
IoTAL $11,563
The d~fference ~n price of the two designs ~s $7,853 O0 Th~s
extra street work ~s necessary as part of a design change It
would not be fair to ~mpose any of this on the contractor
The total cost to the C~ty for the modifications on the Sun
Valley Drainage Flume is $11,425 + $7,853 = $19,278 Excellent
b~ds on the pro~ect from Calvert Paving provide enough funds
from the original budgeted amount to cover these corrections
and reworking of the K~ngs Row street section
David Salmon
0464E