HomeMy WebLinkAboutCHANGE ORDER - BID - 8098 TIMBERLINE & HORSETOOTH INTERSECTION IMPROVEMENTSCity Of
Fort Collins
Engineering
Planning, Development & Transportation
Engineering
281 Korth College Avenue
P.O. Box 680
Fort Collins. CO 60522.0580
970.221.6605
970,221.6378 - fax
Change Order Form
PROJECT TITLE: Horsetoolh &Timberline Turn Lane Improvements
PROJECT NUMBER: 400901812 (Bid #8098)
CONTRACTOR: Naranjo Civil Contractors (PO #9152887)
CHANGE ORDER NUMBER: 2
n prepanng change orders show in order as separate numbered paragrapns the tonomng:
1. Reason for change. 2, Description of change.
3. Change In contract cost. 4. Change In contract lime,
1.&2. See attached Invoice for details
3. The contract cost wlil increase by $110,943.40
4. There will be no change in contract time.
ORIGINAL CONTRACT COST
$3,304,501.62
TOTAL APPROVED CHANGE ORDERS
$0.00
TOTAL PENDING CHANGE ORDERS
$0.00
TOTAL THIS CHANGE ORDER
$10.943.40
TOTAL % OF THIS CHANGE ORDER
0.33%
TOTAL C.O. % OF ORIGINAL CONTRACT
0.33%
ADJUSTED CONTRACT COST
$3,316,445.02
ACCEPTED BY:
REVIEWED BY:
SUBMITTED BY:
rE: L 11 '1 // 5
TE:
'E: �r7 /57
APPROVED BY: DATE:
(Department Head)
APPROVED BY: DATE:
(Purchasing Agent over $60,000)
cc: Contractor
Purehastng
Project FYe
CiY",5f
..Fort Collins
Contract Modification CMO#002
281 North College Avenue
PO Box 580
Fort Collins, CO 80522-0580
Project Name: Horsetooth and Timberline Operational Improvement Project
Project Number: AQC M455-010 (19307)
Date: June 17, 2015
Proposed Contract Modification No.: CMO#002
Project Manager: Dan Woodward
Contractor: Naranjo Civil Constructors, Inc.
John Leone, Project Manager
A. Description of Modification
This modification will change the top lift of asphalt to a mix with a modified binder (PG 64-
28). This is required to meet current City of Fort Collins standards for arterial roadways.
The contract currently calls for a non -modified binder, this was a plan error.
This modification will delete the following bid item:
403-03 Hot Mix Asphalt (Grading SX) (100) (PG 64-22) TON 1794
This modification will add the following bid item:
403-03 Hot Mix Asphalt (Grading S) (75) (PG 64-28) TON 1794
There will be no change in contract time due to this modification. All work will be
performed according to the contract specifications. This work is within the original scope of
the project.
B. Changes to Specifications
Make the following changes to the contract specifications:
Fort Collins
281 North College Avenue
PO Box 580
Fort Collins, CO 80522-0580
Replace Table 403-1 with the table below:
Table 403-1
Test
Value For Grading
Property
Method
S (75)
Air Voids, percent at:
CPL 5115
N (design)
3.5 — 4.5
Lab Compaction (Revolutions):
CPL 5115
N (design)
75
Stability, minimum
CPL 5106
28
Minimum % of the aggregate
retained on the 4.75 mm (No. 4)
CP 45
60
sieve having at least 2 mechanically
induced fractured faces
Accelerated Moisture Susceptibility
CPL 5109
Tensile Strength Ratio (Lottman),
Method B
80
minimum
Minimum Dry Split Tensile
CPL 5109
205 (30)
Strength, kPa (psi)
Method B
Grade of Asphalt Cement, Top
PG 64-28
er
Layer
Grade of Asphalt Cement, Layers
PG 64-22
below To
Voids in the Mineral Aggregate
CP 48
See Table
(VMA) % minimum
403-2
Voids Filled with Asphalt (VFA), %
Al MS-2
65-80
Dust to Asphalt Ratio
Fine Gradation
CP 50
0.6 - 1.2
Coarse Gradation
0.8 - 1.6
Note: Al MS-2 = Asphalt Institute Manual Series 2
Note. The current version of CPL 5115 is available from the Region Materials Engineer.
Note: Mixes with gradations having less than 40% passing the 4.75 mrn (No. 4) sieve shall be
approached with caution because of constructability problems.
Note: Gradations for mixes with a nominal maximum aggregate size of one -inch or larger are
considered a coarse gradation if they pass below the maximum density line at the #4
screen.
Gradations for mixes with a nominal maximum aggregate size of/4 inch or smaller are
considered a coarse gradation if they pass below the maximum density line at the 48
screen.
.-Flirt-Collins
Delete the following from Subsection 403.05:
Pay Item
Hot Mix Asphalt (Grading SX) (100) (PG 64-22)
Add the following to Subsection 403.05:
Pay Item
Hot Mix Asphalt (Grading S) (75) (PG 64-28)
C. Summary of Final Pricing
281 North College Avenue
PO Box S80
Fort Collins, CO 80522-OS80
Pay Unit
Ton
Pay Unit
Iwo
rfEM
QUANTrrY
PRICE
VALUE
Item
Number
Item
Description
Unit
(a)
Original
Estinated
Quantity
(b)
Estimated
Change in
Quantity
(c)
New
Estimated
Quantity
(a+b)
(d)
Bid
I Price
(e)
Change
In
Price
(f)
New
Price
(d+e)
(9)
"Value of
Modification
403-03
Hot MixAsphalt (Grading S) (75) (PG64-28)
IPSM
-
1,7941
1,794
S0.00
$112,10
$11110
S201,107.40
403.03
Hot Nlr\Asphall(GradingSX) (100)(PG UI-?2)
LNI;T
1,794
1 (1,794)
-
S10600
-S10600
5000
-S190,16400
Net Value of Modification
S10,943 40
. For all changes (g) = [(c) x(I)] - [(a) x(d)]
Hot Mix Asphalt (Grading SX) (100) (PG64-22) was for the top lift of asphalt pavement and bid at
$106.00 per ton. The increase in cost due to the material switch to Hot Mix Asphalt (Grading S)
(75) (64-28) was $6.10 per ton, resulting in a final cost of $112.10 per ton for the top lift of asphalt.