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Stabilized construction entrance shall conform to the plans and requirements of the
“Erosion and Sediment Control Design Handbook for Developing Areas of New
Hampshire.”

PART 3 —- EXECUTION
3.01 SILTSACKs® AND STABILIZED CONSTRUCTION ENTRANCE:

A. All SILTSACKs® shall be installed in accordance in all catch basins that receive flow
from the disturbed area of the project.with the manufacturer’s recommendations.

B. SILTSACKs® shall not be removed until finish grading, paving and final loam and
seeding have been completed. Maintain SILTSACKs® in good conditions until
removed.

3.06 ROADWAYS AND PAVEMENT AREAS:
A. As soon as possible after utility work has been installed, the roadways shall be brought

to subgrade, and temporary or permanent gravel base and pavement shall be placed.as
per Specifications.

3.07 REMOVAL OF TEMPORARY EROSION CONTROL MEASURES:
A. All temporary erosion control measures shall be removed once the site has been

stabilized with final pavement, and disturbed loam and seed areas have established a
viable stand of grass.

END OF SECTION

2019 Sewer Replacement Project Erosion Control
Nashua, NH 02300-2

SECTION 02441

CLEANING AND TELEVISION INSPECTION OF PIPELINES

PART 1 - GENERAL
1.01 WORK INCLUDED:

A. The Contractor shall furnish all materials, tools, labor and equipment necessary to clean the
pipeline of debris, and visually inspect by means of a closed-circuit television (CCTV) of
sewers as requested by the Engineer as hereinafter specified.

102 RELATED WORK:

A. Section 01330, SUBMITTALS

B. Section 01331, DOCUMENTATION
103 QUALITY ASSURANCE:

A. The work described herein shall be performed by a company with not less than five (5) 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.

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

A. 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 root cutting; and

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

2019 Sewer Replacement Project Cleaning and Television Inspection of Pipelines
Nashua, NH 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 decanted and disposed of at the City landfill, and in a method
acceptable to the Engineer. Pipe cleaning shall be performed in advance of pipe television
inspection.

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.

CLOSED-CIRCUIT TELEVISION (CCTV) INSPECTION:

Closed-circuit television (CCTV) inspection shall be done 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.

Measurement for location of defects shall be accurately measured from the starting
manhole by a metering device mounted on the camera or by other means acceptable to
the Engineer. 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

2019 Sewer Replacement Project Cleaning and Television Inspection of Pipelines
Nashua, NH 02441-2

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.

E. 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. Sewer reach identification (street location, start MH and second MH)

3.03 DOCUMENTATION:

A. _ 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.

B. _ 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.

C. Digital files 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 digital files 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 Engineer on completion.

END OF SECTION

2019 Sewer Replacement Project Cleaning and Television Inspection of Pipelines
Nashua, NH 02441-3

SECTION 02451

FLAGGERS AND UNIFORMED OFFICERS FOR TRAFFIC CONTROL

PART 1 - GENERAL
1.01 WORK INCLUDED:

A. _ This Section covers the provisions for furnishing Flaggers and Uniformed Police Officers
for 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.
1.02 DESCRIPTION:
A. 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.

1.03 RELATED WORK:

A. SECTION 01110, CONTROL OF WORK AND MATERIALS
PART 2 - PRODUCTS
2.01 | UNIFORMED POLICE OFFICERS:

A. — 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.

B. 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.

C. 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.

2019 Sewer Replacement Project Flaggers and Uniformed Officers for Traffic Control
Nashua, NH 02451-1

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

PART 3 - EXECUTION
3.01 OPERATION:
A. Contractor shall provide barricades, barrier fences, traffic signs, and other traffic control
devices as shown on the plans, required by the City’s Traffic Department, 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

2019 Sewer Replacement Project Flaggers and Uniformed Officers for Traffic Control
Nashua, NH 02451-2

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.

PART 2 - PRODUCTS

2.01 |. ACCEPTABLE MANUFACTURERS:

Tracer tape shall be by Lineguard, Inc.; Empire Level; Pro-Line Safety Products Co.; or
approved equal.

2.02 TRACER TAPE:

A. _ Tracer tape shall be at least 4-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 12 inches with ordinary pipe locaters.

C. The tape shall bear the wording: "BURIED SEWER LINE BELOW" with "SEWER",
continuously repeated every 30 inches to identify the pipe.

E. Standard 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
2019 Sewer Replacement Project Tracer Tape

Nashua, NH 02518-1

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.

The Contractor shall follow the manufacturer's recommendations for installation of the
tape, as approved by the Engineer.

END OF SECTION

Tracer Tape

2019 Sewer Replacement Project
02518-2

Nashua, NH

SECTION 02530
BUILDING CONNECTIONS AND DROP CONNECTIONS
PART 1 - GENERAL
1.01 §©=WORK INCLUDED:

A. This Section covers furnishing of all materials and labor to construct building sewer
connections and drop connections as indicated on the Drawings, and as herein specified.

B. _ Final location of building connections shall be determined in the field by the Engineer.
1.02 RELATED WORK:
A. Section 02300, EARTHWORK
Section 02631, PRECAST MANHOLES AND CATCH BASINS
C. Section 02085, POLYVINYL CHLORIDE GRAVITY PIPE AND FITTINGS

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

A. Six sets of shop drawings and manufacturers literature of the materials of this section shall be
submitted to the Engineer for review.

B. Shop drawings of any special connections, including the proposed adapters for service
connections, shall be submitted to the Engineer.

PART 2— PRODUCTS
2.01 MATERIALS:

A. __ Pipe and fittings for drop connections and for gravity building connections shall be as
specified under Section 02085 POLYVINYL CHLORIDE GRAVITY PIPE AND
FITTINGS. Adaptors shall be as recommended by the pipe manufacturer.

B. Concrete for encasement shall be as specified in Section 03302 FIELD CONCRETE.

PART 3 - EXECUTION
3.01 INSTALLATION:

A. BUILDING CONNECTIONS:

2019 Sewer Replacement Project Building Connections and Drop Connections
Nashua, NH 02530-1

1. Building connections shall be installed using the same construction and pipe joining
techniques as specified in Section 02085 POLYVINYL CHLORIDE GRAVITY PIPE
AND FITTINGS.

2. In general, connections shall be carried only to the property line. The end of the pipes
shall be closed with PVC stoppers jointed in place to ensure against infiltration into the
sewer line.

3. In general, the mainline sewer has been designed at depths to accommodate full
basement service for each building to be connected. Building connections must be
installed at the proper depth in every case that full basement service is possible for the
building. The CONTRACTOR will be required to excavate, remove, reinstall and
backfill any building connection improperly installed at his own expense. The
CONTRACTOR will demonstrate to the Inspector that all connections are properly
made.

4. In streets where building sewers must cross water mains, the CONTRACTOR will
install the building sewers at proper depths to maintain the vertical clearance between
the two pipes, as shown in the construction details. Building services shall be installed
beneath water mains.

B. DROP CONNECTIONS:

1. | When the invert of a pipe entering a manhole is 24 inches or more above the invert of
the lowest pipe leaving the manhole, it shall be connected to the manhole with an
inside drop section.

2. The drop pipe shall be the same diameter, material, and class as the sewer pipe
entering the manhole, unless otherwise noted in the drawings. The drop connection
shall be constructed as shown on the City of Nashua Standard details.

3. All connecting hardware shall be stainless steel.

END OF SECTION

2019 Sewer Replacement Project Building Connections and Drop Connections
Nashua, NH 02530-2