HomeMy WebLinkAboutChange Order - 9Change Order No.09
Contract Title:NE Sunset Blvd-Safe Routes to Transit
Contract No.CAG-22-311
Page 1 of 6
Change Order No. 9
Contract Title:NE Sunset Boulevard Safe Routes to Transit
Contractor:Kamins Construction, Inc.
Contract No. : CAG-22-311
Federal Aid No. : N/A
܈܈ Ordered by Engineer ܈ Force Account
܆ Proposed by the Contractor (VECP) ܈ Bid Item
܆ Unilateral ܆ Lump Sum
Amount Working Days
Original Contract:$318,149.14 45
Current Contract:$430,287.14 45
Estimated Net Change This Order:$4,492.00
New Contract:$434,779.14 47
Prepared By:
Issued By:
Resident Engineer City of Renton
Civil Engineer III
Date Engineer (City of Renton Transportation
Design Operations Manager)
Date
Reviewed By: Consent By:
Engineer of Record Date Surety (Greater than 25% cost and/or 20%
time increase)
Date
Reviewed By: Endorsed By:
City of Renton Project Manager
Transportation Operations Manager
Date Contractor Date
Reviewed By: Executed By:
City Attorney Date City of Renton Public Works
Administrator / Mayor
Date
E.Belen 10/13/2023
Endorsed By:
10/16/2023
10/16/2023
10/16/2023
CAG-22-311, CO #9-23
Approved by Cheryl Beyer via 10/24/2023 email
Change Order No. 09
Contract Title: NE Sunset Blvd-Safe Routes to Transit
Contract No. CAG-22-311
Page 2 of 6
THE CONTRACT IS MODIFIED AS FOLLOWS:
Description of Change:
Contract Provisions
x Add the following unit price item to the contract:
o Unit Price Item No. 1-44 Profiled Plastic Line
Quantity = 1145 LF, Estimated Amount =$12,200
o Unit Price Item No.1-45 Plastic Line
Quantity = 300 LF, Estimated Amount = $2,850.00
o Unit Price Item No.1-46 Tuff – Curb XLP with 13 Posts
Quantity = 33 EA, Estimated Amount = $11,100.00
o Unit Price Item NO 1-47 Additional Traffic Control
Quantity – 1 LS, Estimated Amount = $4,500
x Remove the following unit price item to the contract:
o Unit Price Item No. 1-16 Mountable Cement Conc. Traffic Curb
Quantity = 275 LF, Estimated Amount =$20,020.00
o Unit Price Item No. 1-24 Profiled Plastic Wide Lane Line
Quantity = 124 LF, Estimated Amount =$6138.00
x Add Special Provision Section 8-10.2 Materials:
o 8-10.2 Materials is supplemented with the following:
o Contractor to provide the following materials:
Description Quantity Unit
Tuff-Curb XLP 33 EA
Flexible Delineator 13 EA
x Add Special Provision Section 8-10.5 Payment:
o 8-10.5 Payment is supplemented with the following:
o “Tuff-Curb XLP with 13 Posts”, per Force Account
x Add Special Provision Section 8-22.2 Materials:
o 8-22.2 Materials is supplemented with the following:
o The third sentence is deleted and replaced with the following: Glass beads for Type A
plastic shall be as recommended by the manufacturer.
o Section 8-22.2 is supplemented with the following:
o Glass beads for Type D plastic and Bonded Core Elements shall be shown in Section 9-
34.4.
Change Order No. 09
Contract Title: NE Sunset Blvd-Safe Routes to Transit
Contract No. CAG-22-311
Page 3 of 6
x Add Special Provision Section 8-22.2 Construction Requirements:
o 8.22.2 Construction Requirements is supplemented with the following:
o Thermal plastic on Asphalt shall contain 3M 50/50 wet/dry elements.
x Add Special Provision Section 8-22.3(3)G Glass Beads:
o Section 8-22.3(3)G is supplemented with the following:
o Glass beads shall be applied to Type D markings at a rate of eight (8) to ten (10) pounds
per one hundred square feet.
o Bonded core elements shall be applied to Type D markings at a rate of ten (10) grams
per four (4) inch wide by one (1) linear foot of marking.
x Add Special Provision Section 8-22.5 Payment:
o Section 8-22.5 is supplemented with the following:
o “Profiled Plastic Line”, per Force Account
o “Plastic Line”, per Force Account
x Add Special Provision Section 9-34.4 Glass Beads for Pavement Marking Materials
o Section 9-34.4 is supplemented with the following:
o Glass Beads: Surface-drop glass beads shall be the “Utah Blend” with a methacrylate
compatible coupling agent approved by the material manufacturer. Glass beads shall be
applied at a rate of eight (8) to ten (1) pounds per one hundred square feet.
o Bonded Core Elements: Surface-drop ceramic elements shall be the Series 50M or 70M
with a Methacrylate compatible coupling agent approved by the material manufacturer.
Elements shall meet or exceed a minimum initial value of 150 mcd for white and 125
mcd for yellow per ASTM 2176. The bonded core reflective elements shall contain either
clear or yellow tinted microcrystalline ceramic beads bonded to the opacified core.
These elements shall not be manufactured using lead, chromate or arsenic. All “dry-
performing” microcrystalline ceramic beads bonded to the core shall have a minimum
index of refraction of 1.8 when tested using the liquid oil immersion method. All “wet
performing” microcrystalline ceramic beads bonded to the core shall have a minimum
index of refraction of 2.30 when tested using the liquid oil immersion method. There are
two gradations for the bonded core elements, standard size and “S” series. “S” series is
a slightly finer gradation of elements compared to standard.
Change Order No. 09
Contract Title: NE Sunset Blvd-Safe Routes to Transit
Contract No. CAG-22-311
Page 4 of 6
o A sample of bonded core reflective elements supplied by the manufacturer shall show
resistance to corrosion of their surface after exposure to a 1% solution (by weight) of
sulfuric acid. The 1% acid solution shall be made by adding 5.7 cc of concentrated acid
into 1000cc of distilled water. CAUTION: Always add the concentrated acid into the
water, not the reverse. The bonded core elements are surface treated to optimize
embedment and adhesion to the MMA binder. Elements treated for use with MMA shall
have identification on packaging or label to indicate use with the MMA binder.
-7500sd Elements (ASTM D1214) applied at a rate of 10 grams per 4 inch wide by one (1)
nt and bid on project.
Bonded core elements shall be applied at a rate of ten (10) grams per four (4) inch wide
by one (1) linear foot of marking.
o Reflectance
Typical initial retro reflectance values are shown in the Table below. Typical retro reflectivity
is averaged over many readings. Minimum Retro reflectivity results represent average
performance for smooth pavement surfaces. Values represent both standard and "S" Series
elements. Results may vary due to differences in pavement type and surface roughness.
Increased element drop rate may be necessary to compensate for increased surface area
characteristic of rough pavement surfaces. The initial retro reflectance of a single installation
shall be the average value determined by the measurement procedures outlined in ASTM E
1710, using a 30-meter (98.4 feet) retro-reflectometer. RL shall be expressed in units of
millicandelas per square foot per foot-candle [mcd(ft-2) (fc-1)].
The optics incorporated into the pavement marking system shall be tested and certified by an
independent laboratory to meet ASTM E2177 for wet-recovery and ASTM E2176 for wet
continuous performance levels.
The pavement marking system installed shall meet a minimum Dry reflectance value of 700
MCD/M2/LX for white pavement markings and 500 MCD/M2/LX for yellow pavement markings
Change Order No. 09
Contract Title: NE Sunset Blvd-Safe Routes to Transit
Contract No. CAG-22-311
Page 5 of 6
and wet-recovery (as described by ASTM 2177) reflectance value of 375 MCD/M2/LX for white
pavement markings and 280 MCD/M2/LX for yellow pavement markings, and wet continuous as
described by ASTM 2176 testing) reflectance values of 150 MCD/M2/LX for white pavement
markings and 125 MCD/M2/LX for yellow pavement markings as measured with a 30 meter
device approved by the Traffic Engineering Division (TED).
The Contractor will be required to take and record readings every 500 feet utilizing a 30 meter
device approved by the Traffic Engineering Division. These readings shall be recorded on the
daily report and submitted to the project engineer at the end of each work day or shift.
Reason for Change:
Street Maintenance team would like the centerline pavement markings to be installed using
thermoplastic material (MMA) and not paint as they would have to maintain the MMA less frequently.
To keep the roadway cleaner, TUFF-curb is installed to make it easier for the street sweeper to access
debris trapped in the middle of the center median islands. Contractor has requested an additional 2
days added to the contract capacity and additional traffic control. Additionally, the profiled plastic wide
lane line item was removed as it could not be accomplished by the contractor in the field.
Affects DBE Work: ܆܆ Yes ܈ No
Materials:
List of materials with specification for each.
x Profiled Plastic Line by Force Account (8-22)
x Plastic Line by Force Account (8-22)
x Tuff-Curb XLP with 13 posts (8-10)
Plans:
x Supplement the Plan Drawings No. CH01, CH02, and CH03 with the attached revised plan
sheets.
Revisions to these plan sheets reflect the following changes:
o Removal of Mountable Cement Conc. Traffic Curb from plans
o Installation of TUFF-Curb XLP w/ posts
Change Order No. 09
Contract Title: NE Sunset Blvd-Safe Routes to Transit
Contract No. CAG-22-311
Page 6 of 6
o Installation of profiled/non-profiled plastic centerlines.
Equitable Adjustment:
This Change Order does include an equitable adjustment per Section 1-09.4 of the 2023
WSDOT/APWA Standard Specifications. See attached.
o Item No.1-44 Profiled Plastic Line, per force account.
o Item No.1-45 Plastic Line, per force account.
o Item No.1-46 Tuff-Curb XLP with 13 Posts, per force account.
Extension of Time:
The Time for Completion is extended __0_ Working Days.
Sections 1-04.4 and 1-04.5 of the 2023 WSDOT/APWA Standard Specifications shall govern
this Change Order. The Work of the referenced Contract is modified to include the changes
detailed herein. The payment provided for herein shall constitute the complete and final
settlement for all costs of labor, equipment, materials, overhead, profit, permit fees, and all
other claims that may be made by the Contractor as a result of this change.