HomeMy WebLinkAboutC2008-378 - 10/21/2008 - ApprovedCHANGE ORDER
Department of Engineering Services
City of Corpus Christi, Texas
CHANGE ORDER NO: 3 FUNDING SOURCE: 550910-3362-00000-140328 CONTRACT TIME: 148 C.D.
Operating Department: Engineering Services DATE: October 2. 2008
Name of Project:
Contractor: Longhorn Excavators. Inc.
CHANGE AS FOLLOWS:
Sump modifications to address groundwater/silt conditions:
1. De-muck 46-ft x 46-ft sump area to permit excavator to sit in sump area,
2. Excavate sump area and install 250+ tons of 3-in x 5-in rock to elevation
17.0 and place geotextile fabric above 3-in x 5-in rock,
3. Provide, mix, and install the following materials between elevation 17.0 and
20.0 in sump area, and install at no additional charge the geotextile fabric
specified by the original contract at elevation 20.0:
• 143+ tons of oversized washed rock;
• 143+ tons of 1.0-in washed gravel drain media; and
• 284+ tons of washed concrete sand.
4. Install custom 12.0-in ADS perforated pipe and geotextile wrap flow line at
elevation 17.0 to the extent practical
5. Install 24-in diameter ADS perforated pump riser pipes with geo-net, bull rock,
geotextile and gravel drain media
TOTAL:
ADD DEDUCT
$3,250.00
$13,875.00
$19,657.00
$16,320.00
6 500.00
$59,602.00
Why was this change necessary? (If left off the plans and specifications, explain why)
Groundwater conditions have been more severe that was indicated by aeotechnical analysis and groundwater
How can similar changes be avoided in the future?
A. CONTRACT PRICE ....................................... .......$ 2,369.450.00
B. TOTAL CHANGE ORDER (inc. current) ........ .......$ 588.987.35
C. NEW CONTRACT PRICE ............................. .......$ 2.898,835.35 ,
D. THIS CHANGE ORDER ................................ ....... $ 59,602.00
E. PERCENT TOTAL CHANGE (B/A) ............... ....... 24.86% Project i er
F. PREVIOUS ADDN'L TIME AUTHORIZED .... ....... 0 CD
G. ADDN'L CONTRACT TIME THIS CHANGE ORDER 7 CD
H. TOTAL ADDITIONAL TIME ........................... ....... 0 CD
CITY OF RPU CHRISTI, TEXAS
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Operating Department
2008-378 Director of Management & Budget
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.onghorn Excavators
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