Addendum No. 2 - City of Kodiak

City of Kodiak
Mill Bay Road Pavement Rehabilitation FY2017
PN 17-02/5036
Addendum No. 2
July 27, 2016
The following changes and/or clarifications are made to the Specifications and Contract
Documents of Invitation to Bid for the Mill Bay Road Pavement Rehabilitation FY2017 PN 1702/5036 project:
A. Mill Bay Road Pavement Rehabilitation: CONTRACT DOCUMENTS AND
SPECIFICATIONS
1. Section 402 – ASPHALT CONCRETE PAVEMENT, Article 402.2 - Composition of
Mixture – Job Mix Design
Replace subsection “C” from Addendum No1_Mill Bay Road Pavement Rehabilitation
FY2017 PN 17-02 dated July 22, 2016 with the following:
C. Course Aggregate (retained on the No. 4 sieve): Crushed stone or crushed gravel
consisting of sound, tough, durable rock of uniform quality. Free from clay balls,
vegetative matter or other deleterious matters. Not coated with dirt or other finely
divided mineral matter. The asphalt aggregates shall meet the following requirements
according to station range:
STATION RANGE: 48+60 to 77+00 (BASE BID)
MATERIAL
CHARACTERISTICS
Material Designation
Percent of Wear
Degradation Value
Percent Sodium Sulfate Loss
Percent Fracture
Thin B Elongated Pieces
REQUIREMENT
Local Rock
45 maximum
20 minimum
9 maximum (5 cycles)
80 minimum (single face)
8% maximum
STATION RANGE: 24+50 to 38+10 (Add Alt #1)
MATERIAL
CHARACTERISTICS
Material Designation
Percent of Wear
Degradation Value
Percent Sodium Sulfate Loss
Percent Fracture
Thin B Elongated Pieces
REQUIREMENT
Local Rock
45 maximum
20 minimum
9 maximum (5 cycles)
80 minimum (single face)
8% maximum
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City of Kodiak
Mill Bay Road Pavement Rehabilitation FY2017
PN 17-02/5036
Addendum No. 2
July 27, 2016
STATION RANGE: 11+68 to 24+50+10 (Add Alt #2)
MATERIAL
CHARACTERISTICS
Material Designation
Percent of Wear
Degradation Value
Nordic Abrasion
Percent Sodium Sulfate Loss
Percent Fracture
Thin B Elongated Pieces
REQUIREMENT
Hard Rock
45 maximum
30 minimum
9 maximum
9 maximum (5 cycles)
80 minimum (single face)
8% maximum
2. General Questions/Answers;
a. Question: “The original Bid Proposal for the basic bid had a Leveling Course
quantity of 277 TN. The revised Bid Proposal for the basic bid, issued with
addendum #1, has a Leveling Course quantity of 166 TN and a RAP quantity of
166 TN, which totals 332 TN. Why did the quantity change if the digout typical
still shows 3” of D1 or RAP below the new pavement? Also, it doesn’t seem
necessary to have a D1 and RAP item. In situations like this, the D1 spec
generally allows us to use RAP in lieu of D1 as long as it meets the specifications.
Basically, the contractor decides which method he would like to use and prices
the work accordingly. The issues outlined above also apply to the alternative #1
and alternative #2 bid schedules.”
i. Answer: The revised quantities of RAP and D1 included in Addendum #1
dated July 22, 2016 have been determined to be more accurate than the
previous estimated quantities included in the original Contract Documents
and should be used in determining the bid amount. The Bid Proposal
included in Addendum #1 for the Basic Bid, Add Alt #1 and Add Alt #2
will not be revised and will include both Bid Items 205(1) Borrow
Leveling Course, D-1 and 205(2) Recycled Asphalt Product (RAP).
b. The revised Bid Proposal does not include a Traffic Control item paid on a
contingent sum basis. That item seems like a must since the contractor does not
have an approved TCP to tell him/her how many devices, flaggers, etc. are
necessary for determining a bid price. Without this information the contractor can
only make risky assumptions about what is necessary. High risk items generally
have a great deal of contingency to help account for the unexpected. It would be
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City of Kodiak
Mill Bay Road Pavement Rehabilitation FY2017
PN 17-02/5036
Addendum No. 2
July 27, 2016
in the best interest of the city to have a contingent sum traffic item to pay for
devices and hourly flagging as needed.
i. Answer: Using the two attached approved Traffic Control plan example
from the 2015 Mill Bay Road Pavement Rehabilitation work, provided by
the City of Kodiak, and the Contractor’s estimated project schedule it is
anticipated that a Lump Sum value for item 802(2) Traffic Maintenance
can be determined.
c. The Erosion and Pollution Control item paid on a contingent sum basis was also
removed with addendum #1. This also seems like a necessary item to pay for
Erosion and Pollution control work on a Time and Materials basis as the need
arises.
i. Answer: Within the project limits all stormwater runoff is captured in the
existing storm drain system. Assuming the use of standard BMPs and an
estimated project schedule it is anticipated that a Lump Sum value for item
803(1) Erosion and Pollution Control Plan can be determined.
There are no changes to the Bid opening Time and Location.
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www.invarion.com
Legend
Work Area
ALTERNATE
WAL MART
ENTRANCE
Type III Barricade
flagger symbol
ALTERNATE
SAFEWAY
ENTRANCE
Date: 6/14/2015 Project: City of Kodiak 2015 Mill Bay Road Overlay Author: Louis Rocheleau (ATSSA TCS#51193)
Traffic Control Plan: #1 - Island Lake Rd. to Benny Benson Road Closure
Comments:
*Road Closure is only permitted between the hours of 7:00 pm & 6:00 am.
*All Flagging Stations and Work Zone will be illuminated.
*All Flaggers will have radio communication.
*Portable Changeable Message Board Signs will be used in prominent locations to alert traffic.
*Fire & Police Department & All Emergency Personnel will have access at all times.
*Safeway Traffic Use Von Scheele Entrance from Selief Rd. for Access.
*Walmart Traffic Use Island Lake Rd. Entrance for Access.
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Access to
Municipal
Airport
Legend
Type II Barricade
Type III Barricade
flagger symbol
Work Area
Date: 6/14/2015 Project: City of Kodiak 2015 Road Maintenance Author: Louis Rocheleau (ATSSA TCS#51193)
Traffic Control Plan: #2 - Benny Benson to Bartel Closure
Comments:
*Road Closure is only permitted between the hours of 7:00 pm & 6:00 am.
*All Flagging Stations and Work Zone will be illuminated.
*All Flaggers will have radio communication.
*Portable Changeable Message Board Signs will be used in prominent locations to alert traffic.
*Fire & Police Department & All Emergency Personnel will have access at all times.
*Municipal Airport Traffic use North Entrance as Shown on Drawing.