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e ton roller required except in areas where it’s more practical to use a hand
compactor, as determined by the Engineer.

Item 404.11 Micro-Surfacing —
e All micro-surfacing will be HiMA without fibers.
e Subsidiary items include: sweeping, plastic on service entrances, tack coat,
rolling, and mobilization/demobilization.
e Crack sealing is not subsidiary.

Item 405.11 Crack Sealing —

All crack sealing material shall be Crumb Rubber with fibers.
Cracks shall be prepared with a propane air torch.

The maximum overbanding is 3” or 1.5” each side of the crack.
Crack sealant shall be paid for by the gallon.

Item 604.4 Repair of Existing Structures, Item 604.45 Adjust to Grade Existing Casting,
and Item 604.46 Replace Casting —

e All brick shall be Sewer Struck Brick.

e A 3/8” thick mortar layer fully covering the top of each row of brick shall be

used.

e Mortar shall be chinked into joints.
Items 604.45 and 604.46 include 12” of brick repair below the bottom of the
casting frame. If repair is required below that, it is paid for under Item 604.4.
Mortar must be mixed with a cement mixer.
Mortar must be in compliance with NHDOT Specifications Section 707.
Castings shall be provided by the City at the Street Department on Stadium Dr.
Old castings remain the property of the City of Nashua, NH and need to be
delivered to the City Landfill by the Contractor.

Item 618.6 Uniformed Officers, Item 618.7 Flaggers, Item 619.1 Maintenance of Traffic —

e There are daytime work restriction for DW Highway, Main Dunstable Rd, and
West Hollis St. Work in the street is limited to 9am to 3pm. Exception are
sometimes made if the Director approves them, but it is not guaranteed.

e School gets out at 2pm and Riverside St will be too busy to work in during that
time.

e Night work may be possible on daytime restriction streets.

e Itis the Contractor’s responsibility to properly barricade roads so the micro-
surfacing is not damaged by vehicles driving on it. The City suggests use of
sawhorse barricades.

e The contractor must have 2 variable message signs available for use on major
streets that are subsidiary to Item 619.1.

e Lane closure or detour permits with traffic control plans are required to be
submitted by the Contractor for City review and approval. Traffic Control plans
can be are marked up Google Maps. There is no cost for these permits.

IFB0660-040617 2 Addendum 1

Emergency permits may be required depending on time work. There is no cost for
those permits.

Notifications to DPW Engineering and Solid Waste are critical to informing the
public of planned work, and facilitating timely trash pickup. Daily emails need to
be sent. The two points of contact are Todd Welch (Engineering Department) and
Kevin Naro (Solid Waste Department).

Use of temporary markers is critical to ensuring safety and a minimum amount
should be used even when the second layer of micro-surfacing will be placed the
next day.

Item 619.1 is paid as a Lump Sum. The bid form listed a value of $8100.00 and
should not have listed a value since the value is provided by the Contractor.

Item 619.1 includes everything needed to maintain traffic other than the other bid
items already included.

Item 632 Retroreflective Pavement Markings —

Contractor is responsible for all coordination efforts required to restripe the street
as it was prior to work.

Discussion of Dates/Schedule:

IFB0660-040617

Bids Due — April 6, 2017 at 3:00PM at Purchasing. No exceptions can be made
for late bids. All addendums must be signed or bid will not be valid.

Questions are Due — March 27, 2017 by 5:00PM. Questions cannot be answered
after this date.

Answers to Questions are Due — March 30, 2017 by 3:00PM.

3 Addendum 1

Prebid Questions and Answers:

1. Does the City know the existing asphalt thickness on Redmond St?
a. The City has no records of existing asphalt thickness on Redmond St.

2. Is the proposed pavement thickness of 3.5” on Redmond Street going to be sufficient
to handle the truck traffic?

a. 3.5” of pavement is considered acceptable. The road does receive truck traffic
however the volume of traffic is not substantial with the street being a dead
end. The majority of the worst distress is located at the end of the street
(intersection with Riverside St and Redmond St). Further, reclaiming will
provide additional strength to the subbase, and it is anticipated that the street
will receive an additional 1”-2” of pavement in the near future in the form of a
shim and overlay, under a different contract.

3. The roller requirements in Item 304.112 and 403.11 may be excessive for the limited
amount of work. Will those rollers be required?
a. All work can be completed with an 8 ton vibratory or oscillatory roller.

4. Is crack sealing over banding 3” per side?
a. No. Maximum over banding is 3” total or 1.5” per side.

5. Are variable message signs going to be required on all streets?
a. No, just the higher traffic (major) roads.

6. Is the lane closure or road detour permit issued by the City and is there a cost for
them?
a. All permits are issued by the City and there is no cost.

7. What is the unit of payment for Item 619.1?
a. The unit of payment is lump sum.

8. Is the quantity for Item 619.1 $8100.00?
a. This was an oversight. There should be no quantity provided for that item.
The quantity should be provided by the contractor on the schedule of values
form. The schedule of values form will be updated and reissued.

IFB0660-040617 4 Addendum 1

2. Under Division 9 Technical Specifications, changes have been made as detailed
below. As a result, the 2017 Pavement Preservation Technical Specifications Issued
on March 13, 2017 will be removed and replaced with the attached 2017 Pavement
Preservation Technical Specifications issued on March 30, 2017.

A. Item 403.11 Hot Bituminous Pavement, Machine Method revisions:
The reference to Appendix A was removed.

B. Item 403.12 Hot Bituminous Pavement, Hand Method revisions:
The reference to Appendix A was removed.

C. Item 404.11 Micro-surfacing revisions:

The following sentence was listed twice and one was removed, ‘“‘No crack sealant
material shall be applied in wet cracks or where frost, snow or ice is present, nor where
the ambient temperature is below 25 degrees F”.

Under, F. MEASUREMENT AND PAYMENT, the language was revised to read as
follows:

Crack Sealing with Polymer & Crumb Rubber Modified Asphalt Compound with
Reinforcing Fibers (Crack Sealing) will be paid by the gallon (Gal) of crack sealing
complete in place. Payment for Crack Sealing includes full compensation for material,
labor, transportation, and equipment necessary to complete this portion of the Bid
Schedule. No payment shall be made for materials delivered on site but not placed.

D. General revisions:

Spelling, grammar, and formatting corrections were made to specifications where
required.

E. Additional Specifications:
NHDOT Sections 401, 403, and 411 Modified by City of Nashua were not made

available online with the other bidding documents. This document is provided with this
addendum.

IFB0660-040617 5 Addendum 1

R-16-062
Endorsers: Alderman Richard A. Dowd
Alderman Ben Clemons
Alderwoman Mary Ann Melizzi-Golja
Alderman-at-Large Michael B. O’Brien, Sr.
Alderman-at-Large Lori Wilshire
APPROVING THE COST ITEMS OF A COLLECTIVE BARGAINING AGREEMENT BETWEEN
THE NASHUA BOARD OF EDUCATION AND THE NASHUA TEACHERS’ UNION, LOCAL 1044,
AFT, AFL-CIO, UNIT C, SECRETARIES FROM JULY 1, 2016 THROUGH JUNE 30, 2018 AND
RELATED TRANSFERS
e Budget Review Committee Recommends: Final Passage

R-16-063
Endorsers: Mayor Jim Donchess
Alderman Richard A. Dowd
Alderman David Schoneman
ESTABLISHING THE USE OF FUND BALANCE FOR TAX RATE
e Budget Review Committee Recommends: Final Passage

R-16-066
Endorsers: Mayor Jim Donchess
Alderman-at-Large David W. Deane
Alderman Richard A. Dowd
Alderman June M. Caron
Alderman Ken Siegel
Alderwoman Mary Ann Melizzi-Golja
Alderman-at-Large Michael B. O’Brien, Sr.
Alderman-at-Large Lori Wilshire
ESTABLISHING AN EXPENDABLE TRUST FUND FOR DONATIONS FOR PAVING
e Budget Review Committee Recommends: Final Passage

R-16-067
Endorsers: Alderman David Schoneman
Alderman Ben Clemons
Alderman Ken Siegel
Alderwoman Mary Ann Melizzi-Golja
Alderman Don LeBrun
Alderman-at-Large Michael B. O’Brien, Sr.
AUTHORIZING THE EXPENDITURE OF THIRTY-THREE THOUSAND SIX HUNDRED FOURTEEN
DOLLARS ($33,614) FROM THE CONSERVATION FUND FOR LONG TERM MAINTENANCE,
REPAIRS AND ADJUSTMENTS TO THE SOUTHWEST TRAILS
e Budget Review Committee Recommends: Final Passage

R-16-068
Endorsers: Mayor Jim Donchess
Alderman Thomas Lopez
Alderwoman Mary Ann Melizzi-Golja
Alderman-at-Large Brian S. McCarthy
Alderman Richard A. Dowd
Alderman-at-Large Lori Wilshire
Alderman Ben Clemons
Alderman-at-Large Michael B. O’Brien, Sr.
AFFIRMING THE CITY OF NASHUA, NEW HAMPSHIRE AS A WELCOMING CITY AND
TO PARTICIPATE IN THE WELCOMING AMERICA INITIATIVE
e Personnel/Administrative Affairs Committee Recommends: Final Passage as Amended

B.

C.

I

J.

6. The date of manufacture and the name or trademark of the manufacturer shall be clearly
marked on the inside of each precast section.

7. Acceptance of the sections will be on the basis of material tests and inspection of the
completed product.

8. Circumferential steel reinforcement in walls and bases shall be a minimum of 0.12 sq.
in/lin. ft. for 4-foot diameter sections and 0.15 sq. in./lin. ft. for S- and 6-foot diameter
sections. Reinforcing shall extend into tongue and groove.

Conical reducing sections shall have a wall thickness not less than 5-inches at the bottom and wall
thickness of 8-inches at the top. Conical sections shall taper from a minimum of 48-inches
diameter to 30-inches diameter at the top, as shown on the drawings.

Except where insufficient depth of cover dictates the use of a shorter base, bases shall be a minimum
of 4 feet in height.

Slab top sections and flat riser sections (Grade Rings) shall conform to the contract
drawings, with particular attention focused upon the reinforcing steel and be designed to meet or
exceed an H-20 Loading requirement.

The tops of the bases shall be suitably shaped by means of accurate ring forms to receive the riser
sections.

Precast sections shall be manufactured to contain wall openings of the minimum size to receive
the ends of the pipes, such openings being accurately set to conform with line and grade of the sewer
or drain. Subsequent cutting or tampering in the field, for the purpose of creating new openings or
altering existing openings, will not be permitted except as directed by the Engineer.

"Drop-over" manholes shall be placed where indicated on the drawings. The Contractor shall
accurately measure the diameter of the existing outlet pipe and inform the manufacturer of
its size, so that the "Drop-over" type opening can be cut into the precast manhole base. The
bottom shall be precast; or cast in place by the Contractor as required by the Engineer. The
invert channel shall be formed of brick and mortar, as specified in this specifications section. The
sub-base shall be a compacted, level foundation of crushed stone, at least 6-inches thick, as
specified in Section 02300 EARTHWORK, but shall vary to the depth necessary to reach sound
undisturbed earth.

All manholes and catch basins shall be coated on the exterior with a bituminous damp-
proofing coating.

The Engineer reserves the right to reject any unsatisfactory precast section and the rejected unit shall
be tagged and removed from the job site immediately.

The Engineer may also require the testing of concrete sections as outlined under Physical
Requirements in ASTM C478 with the Contractor bearing all testing costs.

2022 Sewer Replacement Project Precast Manholes and Catch Basins
Nashua, NH 02631-3

3. 2017 Pavement Preservation Maintenance Program Schedule of Values Form
issued on March 13, 2017 will be removed and replaced with the attached 2017
Pavement Preservation Maintenance Program Schedule of Values Form issued
on March 30, 2017.

4. Submitted Questions with Responses.

1. Are the bid quantities for Item 604.4, 604.45, and 604.46 accurate? The plans show
more castings than are listed in the schedule of values.
a. The bid quantities are accurate. The plans show all castings on the street but
not every casting is being adjusted, replaced, or needs vertical foot repair.

IFB0660-040617 6 Addendum 1

Technical Specifications IFB0660-040617
2017 Pavement Preservation
Revised per Addendum #1

ITEM 203.112 — Street Patch
A. SCOPE

This work includes removing damaged asphalt by milling, saw cutting, or jack hammering as
determined by the Engineer. If removal extends to the subbase, the subbase shall be compacted
to 95% density prior to placing new asphalt.

B. MATERIALS AND CONSTRUCTION

The Contractor shall furnish all materials, labor, equipment, and transportation necessary for
work in accordance with the latest approved City of Nashua Standard Specifications for Road
Construction, or the latest approved NHDOT Standard Specifications for Road and Bridge
Construction. The most stringent specification shall apply. Transportation and disposal of the
removed material shall be the responsibility of the Contractor.

This work includes milling, saw cutting, or jack hammering to remove damaged asphalt, and
compacting subbase to 95% density when required. Limits of work shall be marked by the
Engineer. Placement of asphalt will be under Item 403.12.

Contractor shall use a 1 ton steel drum roller or heavier to achieve required compaction. A hand
compactor shall be used to compact areas inaccessible to the roller.

C. MEASUREMENT AND PAYMENT

This item will be paid per Square Yard of asphalt placed and compacted as measured in the field.
No payment will be made for materials delivered and not placed. Payment shall include full
compensation for material, equipment and labor to complete this portion of the Bid Schedule.

Contractor shall measure the square yards of material placed and compacted for each street.
Payment is contingent upon submittal of quantities in a per street format.

Technical Specifications IFB0660-040617
2017 Pavement Preservation
Revised per Addendum #1

ITEM 304.112 - RECLAIMED STABILIZED BASE PROCESSED IN PLACE, 12” DEEP
A. SCOPE

This work shall consist of scarifying, if necessary, and pulverizing the existing pavement
together with subbase material to a depth of 12 inches, removal and disposal of excess reclaim
material, fine grading to elevations provided or as directed by the Engineer, and compaction of
materials to required densities. There will be approximately three inches of excess material to be
removed in order to accommodate three inches of asphalt. The material removed from this
operation shall remain the property of the City of Nashua and shall be transported and stock piled
by the contractor at the Four Hills Landfill at 830 West Hollis St in Nashua. This work will also
include installing and maintaining survey stakes at 25 foot intervals for edge of pavement and
centerline. Survey stakes shall be marked to clearly identify proposed elevations.

B. MATERIALS AND CONSTRUCTION

The Contractor shall furnish all materials, labor and equipment necessary for reclaimed
stabilized base, processed in place, in accordance with relevant provisions of section 306 of the
NHDOT Standard Specifications for Road and Bridge Construction, latest edition.

Compaction shall be accomplished using a vibratory sheep’s foot roller or pad foot roller with at
least 50,000 Ibs. of dynamic force. Final rolling shall be accomplished by a smooth steel wheel
vibratory roller with at least 27,000 Ibs. of dynamic force. Contractor shall also provide
compaction equipment sufficient to achieve required densities in areas not accessible by larger
equipment.

Fine grading to proposed grades shall be subsidiary. Removal, transportation, and disposal of
approximately 3” of material are subsidiary.

After site has been fine graded, compacted, and survey stakes installed, the Contractor will allow
1 day for grades to be verified. In no case shall paving be scheduled prior to verification of
proposed grades.

All catch basins must be protected from reclaimed materials by use of a silt sack. All materials,
labor, equipment, and transportation necessary to install, maintain, and remove the silt sacks
shall be subsidiary.

C. MEASUREMENT AND PAYMENT

Reclaimed stabilized base in place, 12 inch deep shall be paid by the square yard and shall
include full compensation for material, equipment, labor, and transportation required to complete
this portion of the Bid Schedule.

bo

Technical Specifications IFB0660-040617
2017 Pavement Preservation
Revised per Addendum #1

ITEM 403.11 - HOT BITUMINOUS PAVEMENT, MACHINE METHOD
A. SCOPE

This work shall consist of furnishing and placing bituminous pavement including shim pavement
to the depth shown on the plans or ordered by the Engineer.

B. MATERIALS AND CONSTRUCTION

The Contractor shall furnish all materials, labor, equipment, and transportation necessary for
work in accordance with the latest approved City of Nashua Standard Specifications for Road
Construction, and NHDOT Sections 401, 403, and 411 Modified By City of Nashua in Appendix
A. The most stringent specifications shall apply.

Surface preparation shall be subsidiary and shall include (but is not limited to) weed removal,
occasional pruning of trees, and removal of any vegetation impeding the placement of
bituminous pavement. The existing surface shall be thoroughly dry and swept free of all dust,
dirt and loose material (including winter sand).

A tack coat shall be applied immediately prior to placement of hot bituminous pavement. Tack
shall also be applied to every cold joint on driveways, side streets, and where directed by the
Engineer. Tack is subsidiary.

The Contractor shall prevent any materials from entering drainage structures and shall clean out
structures as directed by the Engineer if materials enter them.

The Contractor shall correct drainage problems, as directed by the Engineer, when problems can
be corrected by placing asphalt.

All pavement shall be of the same mix design.

Binder grade will be PG 64-28 unless otherwise specified by the Engineer.

Cc. MEASUREMENT AND PAYMENT

This item will be paid per Ton of placed, compacted, sampled, and cored hot bituminous
pavement, machine method as approved by the Engineer. No payment will be made for materials

delivered but not placed.

Contractor shall record the tons of material placed and compacted for each street. Payment is
contingent upon submittal of quantities in a per street format.