Search

Jim Donchess
Mayor e City of Nashua

To: Board of Aldermen

From: Mayor Jim Donchess

Date: September 1, 2022

Re: Contract Award in excess of $1,000,000 — 2022 Sewer Siphon Rehabilitation

Pursuant to NRO: § 5-74/B: E. Approval by the Finance Committee of a contract award in excess of
$1,000,000 shall be submitted to the full Board of Aldermen at its next regularly scheduled meeting
for final approval prior to award of the contract.

The Finance Committee has approved and placed on file the notification of the award of the
referenced contract at the September 7, 2021 meeting and as such | am requesting the full Board of
Alderman approve the following contract:

Item: 2022 Sewer Siphon Rehabilitation
Value: $1,173,000
Vendor: Insituform Technologies
Purchasing Memo#: 23-323 dated September 1, 2022
Contract Term: 2022

Thank you.

229 Main Street * PO Box 2019 * Nashua, New Hampshire 03061 -2019
603.589.3260 * fax 603.594.3450 * NashuaMayor@NashuaNH. gov
www.NashuaNH.gov

3.04. BLASTING RECORDS:

The Contractor shall prepare and submit to the Engineer daily blast reports, including logs of
each blast. Reports shall be submitted to the Engineer no later than the start of the next day's
work. However, during each day of blasting, the Contractor shall review and shall provide
access for the Engineer to review the data from that day's blasting. Reports after each blast
shall include at least the following information for each blast:

Date, time, and location of blast

Permit number and expiration date

Amount and type of explosives used by weight and number of cartridges

Total number of delays used and number of holes used for each delay

On a diagram of the blast pattern, indicate total number and depth of holes,
maximum charge per delay, maximum charge per hole, and corresponding delay

number

An evaluation of the blast indicating areas of significant over-break, unusual results,
and any recommended adjustments for the next blast.

3.05 POST BLASTING INSPECTIONS:

The Contractor shall examine any properties, structures, and conditions where
complaints of damage have been received or damage claims have been filed. Advance
notice shall be given to all interested parties so that the parties may be present during
the final examination. Records of the final examination shall be signed and distributed to
the owner of the property, the head of the local fire department, and the Engineer.

END OF SECTION

02324-4

SECTION 02441

CLEANING, TELEVISION INSPECTION, AND TESTING OF NEW PIPELINES

PART 1 - GENERAL

1.01

A.

1.02

1.03

1.04

WORK INCLUDED:

The Contractor shall furnish all materials, tools, labor and equipment necessary to visually
inspect by means of a closed-circuit television all gravity sewers installed under this
Contract, as hereinafter specified. The sewers shall be inspected throughout their entire

length. The Contractor shall also test all joints throughout the entire length of installed
sewer.

RELATED WORK:

Section 01330, SUBMITTALS

Section 01331, DOCUMENTATION

Section 02085, POLY VINYL CHLORIDE GRAVITY PIPE AND FITTINGS

QUALITY ASSURANCE:

The work described herein shall be performed by a company with not less than five years of
experience in providing the required services, employing experienced workers and
experienced supervisory personnel. Supervisory personnel shall have not less than three
years of experience in providing the required services and shall be present at the jobsite

during all work related to the required services.

SUBMITTALS: IN ACCORDANCE WITH REQUIREMENTS OF GENERAL
SPECIFICATIONS, SUBMIT THE FOLLOWING:

Prior to beginning work, submit six (6) sets of the following:
1. Qualifications of the firm/personnel who will perform the work;

2. Description of system proposed for handling existing flows during the various
procedures to be carried out;

3. Description of the system and equipment proposed for cleaning;

4. Description of the system and equipment proposed for televising the pipe after
cleaning; and

5. Description of the system and equipment proposed for testing the joints.

02441-1

PART2-PRODUCTS

2.01

A.

B.

EQUIPMENT:
DVD (Read only) video system shall be used which utilizes standard DVD recording discs.

The television camera used for the inspection shall be a pan and tilt closed circuit color
television camera specifically designed and constructed for such inspections. Lighting for
the camera shall be suitable to allow a clear picture for the entire periphery of the pipe.
The camera shall be operative in 100 percent humidity conditions. The camera, television
monitor and other components of the video system shall be capable of producing a
minimum 400 line resolution color video picture. Picture quality and definition shall be to the
satisfaction of the Engineer and, if unsatisfactory, equipment shall be removed and no
payment made for the unsatisfactory inspection.

PART 3-EXECUTION

3.01

A.

3.02

A.

CLEANING:

The Contractor may elect to use either high velocity jet, or mechanically powered
equipment, as described in the NASSCO Standard Specifications. Selection of equipment
shall be based upon field conditions such as access to manholes, quantity of debris, size of
sewer, depth of flow, etc.

All sludge, dirt, sand, rocks, grease, and other solid or semisolid material resulting from the
cleaning operation shall be disposed of in accordance with all applicable regulations and in a
method acceptable to the Owner. Pipe cleaning shall be performed in advance of pipe
television inspection.

The Contractor shall be responsible for the legal disposal of all debris removed from the
sewers during the cleaning operation including any costs incurred. The Contractor shall
not expect the Owner to provide a dumpsite.

Acceptance by the Engineer of the cleaning results will be based on the results of television
inspection. If the results are unsatisfactory, the Contractor shall repeat the cleaning until
accepted by the Engineer at no additional cost to the Owner.

INSPECTION:

The inspection shall be done during periods of high groundwater, one manhole section at a
time, and the section being inspected shall be suitably isolated from the remainder of the
sewer line as required. No sanitary sewer lines shall be inspected until they have been
cleaned. The camera shall be moved through the line in either direction at a uniform slow
rate, stopping when necessary to insure proper documentation of the sewer's condition, but in
no case will the television camera be pulled at a speed greater than 30 feet per minute.

02441-2

B. Manual winches, power winches, TV cable and powered rewinds or other devices that do not

3.03

A.

3.04

A.

obstruct the camera view or interfere with proper documentation of the sewer
conditions shall be used to move the camera through the sewer line.

Whenever non remote powered and controlled winches are used to pull the television
camera through the line, telephones or other suitable means of communication shall be set up
between the two winches, the pumping unit and the monitor control.

Measurement for location of defects shall be at the ground level by means of a meter
device. Marking on cable, or the like, which would require interpolation for depth of
manhole, will not be allowed. Measurement meters will be accurate to 0.2 feet. A
measuring target (or the sealing packer) in front of the television shall be used as an exact
measurement reference point, and the meter reading shall show this exact location of the
measurement reference point.

TESTING

Testing of pipe joints to identify joints that are defective shall be performed using either
liquid or air, at the Contractor's option. Test pressure used shall be acceptable to the
Engineer.

The allowable pressure drop shall be 0.5 pounds in 15 seconds at a pressure greater than 2
pounds per vertical foot of pipe cover, or 4 pounds minimum.

Electronic video equipment shall be capable of displaying and recording, at a minimum, the
following data for each pipe joint:

1. Project Identification

2. Date recorded

3. Footage counter

4. Test pressure

5. Sewer reach identification (street location, start MH and second MH)
DOCUMENTATION:

Printed location records shall be kept by the Contractor which will clearly show the exact
location, in relation to adjacent manholes, of each defect discovered by the television
camera. In addition, other points of significance such as locations of laterals, unusual
conditions, collapsed sections, and other discernible features will be recorded and a copy of
such records will be supplied to the Engineer.

Instant developing of standard size digital photographs of the television monitor at problem

areas shall be taken by the Contractor on the request of the Engineer, so long as such
photographing does not interfere with the Contractor's operations.

02441-3

C. Two (2) DVD discs of the entire inspection shall be provided to the Engineer upon
completion of the inspection. The playback shall be at the speed that it was recorded.
The Contractor shall be required to have all discs and necessary playback equipment
readily accessible for review by the Engineer during the project.

D. The Contractor shall furnish printed internal inspection logs and two (2) DVD discs of the

entire inspection to the Owner on completion.

END OF SECTION

02441-4

SECTION 02451

FLAGGERS AND UNIFORMED OFFICERS FOR TRAFFIC CONTROL

PART 1 - GENERAL

1.01

A.

1.02

1.03

A.

B.

WORK INCLUDED:

This Section covers the provisions for furnishing Flaggers and Uniformed Officers for
Traffic Control and Maintenance of Traffic as described in Section 01110 CONTROL OF
WORK AND MATERIALS, to direct traffic through or around work as shown on the plans or
as ordered by the Engineer.

DESCRIPTION:
The Contractor shall coordinate with the Engineer to determine the number of Flaggers
and Officers deemed necessary to provide for public safety and to maintain a smooth flow
of traffic through the construction area(s) affected.

RELATED WORK:

SECTION 01550, TRAFFIC CONTROL AND SIGNAGE

SECTION 01110, CONTROL OF WORK AND MATERIALS

PART 2 - PRODUCTS

2.01

A.

UNIFORMED OFFICERS:

Contractor shall provide the Traffic Control Officer with a minimum of 24 hours notice
indicating the time of day, street location and confirm number of officers required for
traffic control. This shall be as agreed by the Engineer. The Contractor may furnish
additional traffic control personnel at his/her own expenses but only those agreed upon by
the Engineer will be measured for payment.

Contractor shall give the Traffic Control Officer a minimum of 2 hours prior cancellation
notice should Contractor determine that due to weather or conditions beyond his control he
would not need the scheduled officers.

Contractor shall pay for officer(s) at the prevailing rate established by the local police
department should officers not be needed and the Contractor fails to cancel the officers as
noted in 2.01.B above.

Where the Owner is paying directly for Uniformed Officers, the Contractor shall be
responsible for payment of the wages paid to the Uniformed Officers if the Contractor fails to
cancel the services of the Uniformed Officers in accordance with 2.01.B and 2.01.C
above.

02451-1

PART 3 - EXECUTION
3.01 OPERATION:

A. Contractor shall provide barricades, barrier fences, traffic signs, and other traffic control
devices as required by the Owner’s Traffic Control Officer, or as directed by the Engineer, to
protect traffic, pedestrians, and animals from the work area.

B. — Contractor shall relocate barricades, signs and other devices as necessary as the work
progresses as directed by the Owner’s Traffic Control Officer or the Engineer.

C. — Flaggers shall be provided with the necessary safety equipment.

END OF SECTION

0245 1-2

SECTION 02518

TRACER TAPE

PART 1 - GENERAL

1.01 WORK INCLUDED:

This section covers the furnishing, handling and installation of tracer tape, as called for on the
drawings.

1.02 SUBMITTALS: IN ACCORDANCE WITH REQUIREMENTS OF GENERAL
SPECIFICATIONS, SUBMIT THE FOLLOWING:

A. — Six sets of manufacturer's literature on the materials, colors and printing specified herein,

shall be submitted to the Engineer for review.

B. Tape samples shall also be submitted to the Engineer for review.

PART 2 - PRODUCTS
2.01 ACCEPTABLE MANUFACTURERS:

Tracer tape shall be by Lineguard, Inc., Wheaton, IL; Empire Level, Waukesha, WI, Pro-
Line Safety Products Co., W. Chicago, IL; or approved equal.

2.02 TRACER TAPE:
A. — Tracer tape shall be at least 3-inches wide.

B. Tracer tape for non-ferrous pipe or conduit shall be constructed of a metallic core bonded to
plastic layers. The metallic tracer tape shall be a minimum 5-mil thick and must be
locatable at a depth of 18 inches with ordinary pipe locaters.

C. Tracer tape for ferrous pipe or conduit shall consist of multiple bonded plastic layers. The
non-metallic tracer tape shall elongate at least 500% before breaking.

D. The tape shall bear the wording: "BURIED DRAIN LINE BELOW" (with "DRAIN"

replaced by "WATER, "SEWER", "ELECTRICAL", "GAS", "TELEPHONE", or
"CHEMICAL" as appropriate), continuously repeated every 30 inches to identify the pipe.

02518-1

E. Tape colors shall be as follows, as recommended by the American Public Works

Association (APWA):
Electric Red
Gas & Oil Yellow
Communications Orange
Water Blue
Sewer & Drain Green
Chemical Red (not APWA)

PART 3 - EXECUTION

3.01 INSTALLATION:

A. — Tracer tape shall be installed directly above the pipe or conduit it is to identify,

approximately 12 inches below the proposed ground surface.

B. — The Contractor shall follow the manufacturer's recommendations for installation of the

tape, as approved by the Engineer.

END OF SECTION

02518-2