HomeMy WebLinkAboutApollo - Change Order No. 2 CP7-WT-2A-11-05 Columbia Water SupplyCITY OF PASCO
PUBLIC WORKS DEPARTMENT
CONTRACT CHANGE ORDER NO. 2
Project No: CP7-WT-2A-11-05 Columbia Wate Columbia Water Supply
Contractor: Apollo, Inc., 1133 W. Columbia Drive, P.O. Box 7305, Kennewick, WA 99336
^l i
Description of Change: Refer to Backup Sheet
Detail as Appropriate: Refer to Backup Sheet
Contract Bid Amount:
SALES TAX @ 8.6%:
Total:
$ 6,983,000.00
$ 600,538.00
$ 7,583,538.00
PREVIOUS CHANGE ORDERS
CURRENT CHANGE ORDER
Subtotal $ (5,000.00)
Subtotal $ 97,831.90
Sales tax @ 8.6% $ (430.00)
Sales tax @ 8.6% $ 8,413.54
Total $ (5,430.00)
Total $ 106,245.44
Total Change Orders To Date $ 100,815.44
New Contract Amount $ 7,684,353.44
IS CONTRACT TIME AFFECTED BY THIS CHANGE ORDER YES NO
Contract Time Prior to this Change Order .............................................. 500
Modification to Contract time by this Change Order ................................. 0
Revised Total Contract Time............................................................... 500
It is mutually agreed by both parties that this Change Order fully describes the change(s) that is (are)
being made and that the compensation for this Change Order is full and complete and is the only
compensation due or owing for this Change Order. Further, it is mutually agreed that this document
will supplement the present Contract Documents and that the provisions of the previously executed
Contract Documents shall apply to this Change Order.
AGREED TO AND ACCEPTED: APPROVED:- k�� //" /� 2 /�'� 6210-7
CONTRACTOR Date PROJECT MANAGER Date
APPROVED: AP OVED:
Ql1il ,o-,Z_n ;4 10173117
CONSTRUCTION MANAGER Date PUBLIC WORKS D to
DIRECTOR
C irY eA,14Weeze-M ®. �
oZ 73�
r
W
W
2
N
a
Y
U
Q
m
N
O
z
w
W
❑
O
W
CD
z
a
2
U
F-
L)
Q
Q'
H
z
O
U
H
IL
W
❑
3
CL
a
O
U
a�
ca
(6
E
7
0
U
ui
Y
H
.a
a`
ED
Cl)
Cl)
O)
E
LO
0
M
x
0
m
N
l
M
0
E
2
0
U
(h
Cl)
U
k
W
O
w
IL
IL
a
0
LU
CL
CL
LU
U
Q
❑
z
a
O
F
❑
W
W
a
-
o
R 7C)
co
O
O
I-
F Eco�-
a
V9,
61�
R Y
O R
H 7
O
O
O
Y
M
c0
C�
O
O
n
°°
V O
O
I,-
Qto
rn
O c
U R
O
Y
C
'
a_ 3
m O
E
a
d
'E u
IL`
Vy
»
N
=cnv�
1=
J
J
7
m
=m
C!
N
N
C
L
0
.M
_
Y
)
U
a
o
a
Nc
c
a
U
N
m
ID
0
3
O
R
K
N
M
z
00
-
U
U
W
O
w
IL
IL
a
0
LU
CL
CL
LU
U
Q
❑
z
a
O
F
❑
W
W
a
City of Pasco
Columbia Water Supply
Change Order Proposal
COP 002 — Skvlights vs Roof Hatches
Background Information: Sheet A-3 of the Plans calls for three pump access hatches to be
installed and two skylights to be installed. The City has requested that the skylights noted in the
Plans be replaced with two additional pump access hatches. This will provide the City with
easier access to maintain the pumps.
Cost Evaluation: The material cost, including markup, for each hatch is $3,025.65 greater than
the material cost for a skylight.
The final additive price for this change item is .......................................................... $6,051.30
There is no change in contract time related to this item.
Page 1 of 1
City of Pasco
Columbia Water Supply
Change Order Proposal
COP 003 — Raw Water Piping Modifications
Background Information: This change order proposal consists of three parts:
1. Connect piping of existing intake building to new raw water piping.
The Plans show that the existing pump station building will be disconnected from the
West Pasco Treatment Plant. The City and the Contractor discussed a possible piping
connection between the existing pump station building and the new pump station
building, which would allow either pump station to provide water to the treatment plant.
The Contractor will install a 16 -inch intertie between the piping from the existing pump
station and the piping from the new pump station. This provides the City with a backup
in case the new pump station needs to be taken out of service for maintenance.
2. Install an in-line valve on the 20 -inch potable water line to the west of the last house's
service meter, near Station 5+75.
The existing potable water line providing service to the houses along Court Street is
close to the proposed location of the raw water line and will be exposed during the
excavation. The City requested that an additional valve be added to the west of the last
service meter so that the water line can be isolated during construction while still
keeping these houses in service.
3. Install restrained joints instead of concrete thrust blocks
There are a significant number of utilities within the Court Street right-of-way. In order to
prevent encasing other utilities in concrete, the City requested that restrained joints be
used instead of thrust blocks. It was decided that two specific locations needed
restrained joints instead of thrust blocks. A restrained joint will be added at the joint west
of the 45 degree bend at Station 2+68.5, at the joint between the bends at Station
2+68.5 and Station 3+04.5, and at the joint to the east of the 45 degree bend at Station
3+04.5. The two thrust blocks for these 45 degree bends will be removed as a credit.
Cost Evaluation: The cost for each part is shown below:
1. The initial proposal was $91,883.80. By removing a 30 -inch valve ($12,000), reducing
the pipe size to 16 -inches, and evaluating the materials, labor, and equipment, this
amount was reduced to $72,874.13.
2. The proposed cost is $14,692.09, which pays for $6,986.71 in material costs and one
day of equipment and labor for installation.
3. The unit price per restrained joint is $2,551.66 and the credit per thrust block is
($1,720.30), resulting in a total of $4,214.38 to add the three restrained joints and deduct
the two thrust blocks.
The final additive price for this change item is ........................................................ $91,780.60
There is no change in contract time related to this item.
Page 1 of 1
Memo
To: Steve Brewer
Public Works Department
Water Treatment Plant
From: Joe West, Chief Water Treatment Plant Operator
Date: 10/6/17
Re: Columbia Raw Water Intake COP -02
This change order proposal involves furnishing and installing a piping connection between
the existing pump station and the Columbia Water Intake. Isolation valves to alternate
between sources of supply are also included.
The additional piping and valves will allow for the existing intake to supply the West Pasco
WTP during the startup and testing of the new facility. The additional piping connection will
also allow the WPWTP to be continuously fed during routine maintenance activities at the
new intake station. This includes pump inspections, screen removal, and replacement of
wear parts on the submerged mechanical screens. The WPWTP continues to increase its
output into the distribution system and shutdown events elevate the risk posed to
customers if its supply cannot be maintained. Preserving uninterrupted operations via the
valve and piping improvements is highly advantageous.
A second item addressed in this change is the addition of a valve within the existing 20"
transmission main just to the West of the WPWTP. This valve will provide insurance for a
water line failure during the installation of the new utility improvements throughout Court
Street. Installation of this valve will keep all customers supplied with water in the event of a
failure or shutdown of the 20" transmission main.
0 Page 1