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4. Finished Dry Thickness: See Article 3.04, Paragraph H herein

5. Bond Strength: 2,000 psi (per ASTM C882)

PART 3 - EXECUTION
3.01 GENERAL:

A. Contractor shall accurately field-measure and size the rehabilitation products for each
individual manhole. Each existing sewer manhole to be rehabilitated may have a
different configuration and varying field dimensions. All field measurements shall
conform to the requirements of the manufacturers of the rehabilitation products.

3.02 INTERNAL LINER SYSTEM:

A. All loose and protruding mortar, bricks, manhole steps, roots, and anything else that
might prevent proper application of the liner shall be removed prior to application.
Manhole steps and protruding pipe shall not be replaced after installation of the liner.

B. High pressure water shall be used during surface preparation to produce a clean, abraded,
and sound surface with no evidence of laitance, loose material, or other contaminants.
Surface shall have a suitable profile for application of liner in accordance with the
manufacturer’s requirements.

C. All areas to be lined shall be dry, clean, and free of dust, dirt, sand, and other
contaminants as recommended by the manufacturer prior to installation. A torch or heat
lamp may be required to ensure a dry surface.

D. Any spray equipment used for application shall be specifically designed to accurately
ratio and apply the liner system. Liner system shall be installed in strict accordance with
the manufacturer’s installation instructions over the entire interior of the manhole and 2
inches up onto the frame and 6 inches down onto the bench.

F. Epoxy coating, if ordered by the Engineer, shall be installed in strict accordance with the
manufacturer’s installation instructions, including those for materials handling, primers,
mixing, environmental controls, working time, working temperature, pot life, allowable
time between coats (recoat time), safety, and spray equipment. Installation of epoxy
coating over cementitious base coat shall not occur until the cementitious base coat has
cured to the extent and time required by the manufacturer. A permanent identification

2019 CIPP Lining Project Manhole Rehabilitation
Nashua, NH 02800-7

3.03

3.04

and date of work performed shall be affixed to the structure in a readily-visible location,
and a final written report shall be provided to Owner and Engineer detailing the location,
date of report, and description of liner installation.

Cementitious coating shall be installed in strict accordance with the manufacturer’s
installation instructions, including those for materials handling, on-site mixing,
environmental controls, working time, working temperature, safety, and spray equipment.
Water shall only be added to the materials during the mixing process and prior to material
pumping or spray application; water shall not be added at the nozzle. Cementitious base
coat shall only be installed via low-pressure application. The cured base coat surface shall
be troweled smooth and continuous with proper sealing connections to all unsurfaced areas.
The total thickness of the cementitious base coat shall be in accordance with the epoxy
lining manufacturer’s recommendations and the following minimum requirements:

1. For all brick manholes and for block or cast concrete manholes in poor
condition with notable loss of surface material or exposed reinforcing, apply to a
minimum thickness of 1 inch.

2. For block or cast concrete manholes in fair condition, apply to a minimum
thickness of 0.5 inch.

3. For block or cast concrete manholes in good condition with no loss of
surface material, it may be acceptable to apply the epoxy top coat directly to the
manhole surface without applying a cementitious base coat if the Contractor
confirms that the existing manhole surface meets the requirements of the epoxy
top coat manufacturer.

MANHOLE INVERT RECONSTRUCTION:

Where ordered by the Engineer, manhole channels, inverts and benches shall be
constructed of brick. Invert construction shall comply with the City of Nashua
requirements found in the Standard Specifications for Sewers and Drains available at the
City Engineering Department or on line at www.NashuaNH.gov under Public Works
Department, then Engineering Department, and the Standard Sewer Details on the plans.
All debris shall be decanted and disposed of at the City landfill.

SEWER MANHOLE INSIDE DROP ASSEMBLY:

Drop pipe and bowl shall be connected to the pipe(s) entering a manhole using
manufactured couplings or fittings.

2019 CIPP Lining Project Manhole Rehabilitation
Nashua, NH 02800-8

3.05

Schedule 40 PVC pipe shall be connected using industry-grade solvent cement.

Drop pipe shall be secured to the inside of manhole using steel straps or struts. Straps
shall have a minimum width of 1/2 inch and a minimum thickness of 0.03 inch.

Tee and bottom elbow shall be firmly secured by stainless steel straps. Intermediate
straps shall be spaced at a minimum of 5 feet. Straps shall be epoxy-anchored to manhole
using 1/4-inch anchors (two per strap). Anchor shall be embedded into mortar a
minimum of 3 inches. Bottom elbow shall be seated on bench for support.

If a manufactured drop bowl product is used, drop assembly shall be sized and installed in
strict accordance with the manufacturer’s installation instructions and guidelines.

INSPECTION, TESTING, AND ACCEPTANCE:

If any defects are observed, products shall be repaired or replaced at no cost to the Owner
using a method acceptable to the Engineer.

Vacuum testing in accordance with ASTM C1244 shall be required on one randomly-
selected manhole for each group of five manholes rehabilitated with internal liners.
Contractor shall perform vacuum testing with appropriate test equipment in the presence
of an inspector. Any manholes failing this test shall be reworked as necessary and
retested at no additional cost to the Owner. All verification and vacuum testing shall be
at no cost to the Owner and shall be paid for by the Contractor.

Holiday detection testing in accordance with ASTM D4787 shall be required on one
randomly-selected manhole for each group of five manholes rehabilitated with internal
chimney seals or liners. Contractor shall perform holiday detection testing in the
presence of an inspector with test equipment appropriate for the product. All detected
holidays shall be marked and repaired by abrading the coating surface with grit disk paper
or another hand-tooling method. After abrading and cleaning, additional coating shall be
hand-applied to the repair area as needed. All touch-up/repair procedures shall be in
accordance with the coating manufacturer's recommendations. All verification and
holiday detection testing shall be at no cost to the Owner and shall be paid for by the
manufacturer or the Contractor.

Adhesion (Pull-off) testing shall be required on one randomly-selected chimney seal for
each group of ten manholes rehabilitated with internal chimney seals or liners. A portable
pull-off adhesion tester shall be used to achieve substrate failure. Any chimney seals or
liners failing this test shall be reworked as necessary and retested at no additional cost to
the Owner.

2019 CIPP Lining Project Manhole Rehabilitation
Nashua, NH 02800-9

E. Inside drop bowl assemblies; and reconstructed channels, inverts, and benches shall pass
a visual inspection for voids, pinholes, cracks, leakage, and any other defect.

END OF SECTION

2019 CIPP Lining Project Manhole Rehabilitation
Nashua, NH 02800-10

)) THE CITY OF NASHUA “The Gate City’

Financial Services

Purchasing Department

February 28, 2019
Memo #19-126

TO: MAYOR DONCHESS
FINANCE COMMITTEE

SUBJECT: 2019 SEWER REPLACEMENT CONSTRUCTION (VALUE: $1,001 ,888)
DEPARTMENT: 169 WASTEWATER; FUND: BOND

Please see the attached communication from Stephen Dookran, P.E., City Engineer, dated February 28,
2019 for information related to this purchase.

Pursuant to § 5-78 Major purchases (greater than $10,000) A. All supplies and contractual services,
except as otherwise provided herein, when the estimated cost thereof shall exceed $10,000 shall be
purchased by formal, written contract from the lowest responsible bidder, after due notice inviting bids.

The City Engineer, Board of Public Works (February 28, 2019 meeting) and the Purchasing Department
recommend the award of this contract in an amount of $1,001,888 to N. Granese & Sons, Inc. of Salem,
MA.

nS spectivly,, 7
VDan Kooken
Purchasing Manager

Ce: S Dookran L Fauteux

229 Main Street ¢ Nashua, New Hampshire 03061 © Phone (603) 589-3330 « Fax (603) 589-3233 |

i

To:

From:

Re:

G. Motion:

Discussion:

City of Nashua, Public Works Division

Board of Public Works Meeting Date: February 28, 2019

Stephen Dookran, P.E., City Engineer
Engineering Department

2019 Sewer Replacement
Construction

To approve the award of the construction contract for the 2019 Sewer Rehabilitation
Project to N. Granese & Sons, Inc. of Salem, MA in the amount of $1,001,888. Funding
will be through: Department: 169 Wastewater; Fund: Bond; Activity: Sewer Rehab.

The annual sewer program addresses failing, aged sewers and associated structures and
piping. This 2019 Sewer Rehabilitation project is expected to replace approximately
1,305 linear feet of sewer mains along with connecting drainage basins and pipes. The
streets included in this contract are:

® Ash Street (35 Ash St to Central St)
e C Street
@ Charles Street (Auburn St to Franklin St)

Some of the locations will require the commitment of the utility companies for timely
construction.

Seven contractors attended the mandatory pre-bid meeting on January 30". Three bids
were received on February 14" as follows:

N. Granese & Sons, Inc. of Salem, MA $1,001,888.00
Defelice Corporation of Dracut, MA $1,097,810.00
Albanese D&S, Inc. of Dracut, MA $1,247,400.00

The low bid was reviewed and found to be acceptable. N. Granese & Sons, Inc. has
performed satisfactorily on other sewer projects with other public works entities in New
Hampshire from review of previous projects and references. Work is expected to start
as early as April to address significant pipe issues.

2019 Sewer Replacement Project

Construction Specifications
and
Contract Documents

Prepared By:

Hayner/Swanson, Inc.
3 Congress Street
Nashua, NH 03062
Tel: (603) 883-2057

Prepared For:

City of Nashua, New Hampshire
Division of Public Works
Engineering Department

January 2019

TABLE OF CONTENTS

DIVISION
1. INVITATION FOR BID 0.00... ceseessessesssessecessssesceesocseseceeesesceesseeensaes
2. INSTRUCTION FOR BIDDERS 00.00... ceeeeseeeceeeesceneeeeceeeseseseeeeeeees
3. BID FORM, BID BOND, BID SCHEDULE, AND CONTRACTOR’S
QUALIFBICATIONS 0.0... ccccsccsccsccsseneceesetecscecesesceceessesesesscseeeeeeseensenenees
4. PERFORMANCE AND PAYMENT BONDS .....000o. ccc ccssccssesseseeeeeeeees
5. AGREEMENT ...0.. ccc ccssscccsscesseessseesecsensssseesseeeceneeenesesseeatseesesssesseesensses
6 GENERAL CONDITIONS 0... ee ceecesesseceseseseeseeeesesescseeeesesceeeseeceessenees
7 SUPPLEMENTARY CONDITIONS... eeceseseseeeeeceneseeeeeeseseeeeeesenes

8. EXHIBITS

A. Notice of Award

B. Notice to Proceed

C. Change Order

D. Certificate of Substantial Completion

9. CONSTRUCTION SPECIFICATIONS

TC -10f 1

DIVISION 1

INVITATION TO BID

foeh) THE CITY OF NASHUA

Pinaud Seretées
Purchasing Departetent

“The Gate City”

February 12, 2019

IFB0779-021419
2019 SEWER REPLACEMENT PROJECT

ADDENDUM NO.1

Information included in this document becomes a part of the original IFB.

If you are submitting a paper bid, please sign below to indicate receipt of this additional information and include this
page with your bid submittal. If you are submitting a bid via Bid Express please be sure to acknowledge the addendum
on the website before submitting your bid.

ADDENDUM 1 is being issued te answer all questions for this Bid.

All other aspects of the original document remain the same.

Failure to acknowledge the addendum will result in the bid submittal being disqualified.

Sincerely,
f af oat
MSV
Dan Kooken

City of Nashua — Purchasing Manager

kookend@nashuanh.gov

Addendum #1 received and incorporated into bid submittal for IFBO779-021419.
Please sign and include this addendum in your bid package.

7

(Authorized Signature) Sven A-Gmrex, reste

Feb. 14, Bory
(Date)

\) - Cranese L Sun s,2ine
(Name of Firm)

IFBO7 79-021419 ADDENDUM NO. 1 Page 1 of i