Search

3.06

10.

11.

After large areas of Asbestos-Containing Materials have been fully wetted and
tested, the asbestos shall be carefully removed in small sections by hand using
suitable tools

As the material is removed, it shall be promptly wetted and packed into Disposal
Bags and/or approved disposable drums. When each bag 1s full, the packaged
material shall be sprayed with amended water, sealed, and transported to a
temporary storage area inside of the Work Area. Accumulations of standing or
free water shall not be allowed to collect on the Work Area floor or ground.

The Asbestos Abatement Contractor shall continuously mist the Work Area and
spray the material to prevent it from drying out and to reduce airborne dust and
fiber levels.

Once the majority of the Asbestos-Containing Material 1s removed, the Asbestos
Abatement Contractor shall remove all remaining visible and microscopically
detectable material using appropriate tools.

The Asbestos Abatement Contractor shall minimize contamination of the ground,
the excavation floor, the exterior of Disposal Bags and containers, and all other
surfaces within the Work Area. At the end of each shift, all surfaces shall be
cleaned of all materials and then HEPA-vacuumed or wet cleaned and all debris
packaged in Disposal Bags.

Excessive water accumulation or flooding in the Work Area shall require Work to
stop until the water 1s collected and disposed of properly.

Should the Contractor remove any non-friable Asbestos-Containing Materials in a
manner which transforms the material into a friable condition, the Contractor shall
be responsible for handling and disposing of this material as friable Asbestos-
Containing Waste Material.

Disposal of all Asbestos-Containing Material shall be in accordance with
Subsection 3.08.

Upon notification by the Engineer that the level specified in Subsection 3.10.F has
been exceeded, the Contractor shall immediately cease Asbestos Abatement
Activities until the fault 1s corrected. Work shall not recommence until
authorized by the Engineer.

ASBESTOS REMOVAL WITHOUT CONTAINMENT

This Subsection 1s provided for removal of asbestos-containing materials 1n excavation
areas where the use of containment structures is not possible. The Contractor shall
submit detailed procedures to the Engineer prior to performing any asbestos abatement

02111-35

work without containment structures. The Contractor shall not begin any Work until he
has verified that the excavation (trench) has been adequately shored and that all
pertinent life safety systems are in place. It is the Contractor's responsibility to select the
means and methods to ensure that the release of asbestos fibers into the environment
does not occur and that the procedures are in compliance with governing regulations.

B. For the removal of Friable Asbestos Materials, the Contractor shall:

1. Construct a remote containment and Decontamination Facility adjacent to the
excavated area and establish negative air pressure as specified herein.

2. Carefully excavate, by hand, a sufficient area around the material to perform the
abatement Work. Any asbestos debris that is present or generated by these
activities shall be promptly wetted and placed into Disposal Bags before
continuing with the Work.

3. Wrap exposed insulation with at least one layer of 6-mil polyethylene sheeting
and seal all seams air-tight using duct tape.

4. If pipe is to be cut and removed in large sections with material intact, divide pipe
into manageable sections and remove insulation at points where pipe is to be cut
using glovebag procedures.

5. Cut pipe at abated points. Carefully remove pipe from the excavation and transfer
into the remote containment. Remove all Asbestos-Containing Material in
accordance with procedures specified herein.

6. Where the friable pipe insulation 1s in good condition and all removal procedures
are performed using glovebag procedures as specified 1n Subsection 3.07
containment shall not be required.

C. For the removal of Concrete Encased Friable Asbestos Material, the Contractor shall:

1. Using a HEPA-filter equipped saw, cut material into manageable sections.
During all cutting activities, keep Asbestos-Containing Materials wet and provide
constant misting of the air surrounding the immediate area. Additionally, provide
localized negative air by positioning HEPA-exhaust unit inlet duct in the
immediate area of the cutting.

2. As each cut 1s completed, wet the exposed ends of the insulation and remove
approximately one inch deep of insulation from the end. Place removed
insulation into a Disposal Bag taking care not to allow removed insulation to fall
to the bottom of the trench. Apply enough quick-setting mortar to the cut end of

02111-36

the section to fill the area of the removed insulation and seal the insulation within
the section. Allow the mortar to adequately dry.

As each section of material is cut free and properly prepared, remove the sections
from the trench.

Prepared component sections will immediately be placed into an acceptable waste
transport vehicle. No stockpiling of removed components will be allowed outside
of a locked, secure waste transport vehicle.

D. For the removal of Non-Friable Asbestos Materials, the Contractor shall:

1.

Carefully excavate, by hand, a sufficient area around the material to perform the
abatement work. Any asbestos debris that is present or generated by these
activities will be promptly wetted and placed into Disposal Bags before
continuing with the Work.

Once excavation is complete, place one layer of 6-mil polyethylene sheeting on
side walls and bottom of trench under the ACM to be removed.

Thoroughly encapsulate Asbestos-Containing Materials with an acceptable
penetrating encapsulant per manufacturer’s guidelines.
Remove Asbestos-Containing Materials as follows:

a. Asbestos Cement Pipe (ACP), Duct or Board:

Should ACP be found in the trench, the City may elect to handle the
removal of that material depending on the availability of trained personnel
from the City Solid Waste Department. The Contractor will initially
contact the Engineer who will arrange the removal process with the City
Solid Waste Department. The Contractor shall assist by carefully
removing sections of ACP found in the trench such that 1s can removed in
whole sections to be subsequently handled by the qualified City
personnel. Should it be necessary to cut the material, a the pipe shall be
kept wet and cut material into manageable sections using HEPA-filtered
saw. The Contractor will take all necessary precautions to avoid any
breakage of the ACM. Cut ends of pipe will be immediately encapsulated.
Should City personnel be unavailable to remove the pipe, the cut sections
of pipe will be removed from the trench and immediately wrapped and
sealed in two layers of 6-mil polyethylene sheeting or placed into Disposal
Bags. Packaged waste will then be placed into acceptable waste
transportation vehicle.

Note: Whenever possible, the Contractor will limit cutting of asbestos
cement materials and dismantle materials in intact sections.

02111-37

3.07

b. Asbestos-Containing Electrical Cable Wrap:

Wet and cut cable using mechanical cutting tool, such as bolt cutters.
Encapsulate cut ends, place cut sections into Disposal Bags, and place
packaged waste into an acceptable waste transportation vehicle.

Should the Contractor remove any Non-Friable Asbestos-Containing Material in a
manner which makes the material friable, the Contractor shall be responsible for
handling and disposing of this material as friable Asbestos-Containing Waste at
no additional cost.

Clean-Up and Work Area Decontamination:

1.

Prior to removing protective poly sheeting, carefully HEPA-vacuum or wet wipe
all poly surfaces.

Place poly sheeting into double Disposal Bags and remove from the work area.

Thoroughly wet and place into Disposal Bags any earth contaminated with
asbestos debris.

Water contaminated with asbestos shall be filtered through a 5 micron filtering
system. Filtered water may be routed as surface water. Used filter cartridges
shall be disposed of as asbestos waste.

Worker Decontamination:

All personnel exiting a work area will perform personal decontamination as follows:

1.

Workers will enter Decontamination Facility/unit and HEPA-vacuum outer
disposal suit and respirator. Water should be available for wet washing hands,
face, etc.

Workers will remove outer disposable suit while in Decontamination Facility/unit
and place directly into a Disposal Bag. Respirators shall be worn at this stage of
decontamination.

REMOVAL USING NEGATIVE PRESSURE ENCLOSURE (“GLOVE-BAG”)
PROCEDURES

This Subsection pertains to the removal of asbestos-containing pipe and pipe fitting
insulation using the ventilated glove bag technique.

02111-38

The Contractor shall provide and utilize all equipment necessary to perform glove bag
work.

Maximum temperature of components (pipe, ducts, stacks, etc.) allowable for glove bag
Work shall be as specified by glove bag manufacturer.

If pipe insulation is in damaged condition, then this material must be repaired prior to
removal.

Removal Procedure:

1. The Contractor shall prepare the Work Area in accordance with all applicable
regulations. This includes, but is not limited to containing the Work Area by
shutting down HVAC systems, excluding unauthorized personnel from the
immediate area, closing doors, and installing warning signs.

2. Asbestos laborers involved in the negative pressure enclosure procedure shall
wear two (2) disposable suits, including gloves, hood and footwear, and
respiratory protection in accordance with regulatory guidance. All street clothes
shall be removed and stored in a Clean Room within the Work Area. The double
layer disposable suit shall be worn during the installation of the negative pressure
enclosure and throughout the procedure 1f a Decontamination Unit with a shower
is not contiguous to the Work Area. Ifa Decontamination Unit (with Shower and
Clean Room) is contiguous to the Work Area, only one layer of disposable
personal protective equipment shall be required.

3. No disturbance of ACM shall occur during construction of the glove bag.
Negative pressure enclosure procedures shall be accomplished in a constructed or
commercially available plastic "tent-enclosure". The tent-enclosure is a single use
device that shall not be reused once dismantled or collapsed.

4. HEPA Filtered Exhaust Units shall be installed in each Work Area. A centrally
located remote Decontamination Facility shall be installed. The location of the
remote Decontamination Facility shall be reviewed by the Engineer.

5. The Contractor is responsible for demonstrating the tightness of the glove bag to
the pipe.
6. During removal, periodically wet the inside surfaces of bag and any waste for

better visibility and fiber control. Use cold water to prevent fogging.

7. During removal, periodically use HEPA-vacuum to compensate for any leaks and
to reduce airborne fiber levels.

02111-39

8. Cut the insulation sharply for neat sealing of exposed insulation. Leave 4-inch
minimum margin at the bag seal point for safety.

9. After removal of all asbestos, wash down all surfaces to below the levels where
the bag will be sealed, and saturate the waste. Ensure the absence of residue in
folds, on the back side of pipe, ete.

10. Glove bags shall be used for only one operation and then be disposed of. Glove
bag shall not be slid down the pipe and/or reused.

F. Post Removal Procedures:

1. Seal exposed ends of any remaining insulation with fiberglass wettable cloth
while the insulation 1s damp, unless additional removal is planned.

2. If no additional removal is planned, the glove-enclosed tools shall be immersed in
a pail of water, opened and cleaned. (Rags and/or sponges can be used to clean
other tools, but cannot be salvaged.) The water and other debris shall be disposed
of as asbestos waste.

3. The stripped surface shall be encapsulated with an approved Encapsulant.

4. Upon completion of abatement, and prior to dismantling the negative pressure
enclosure, the enclosed surfaces shall:

a. Be wet cleaned using rags, mops or sponges;

b. Be permitted sufficient time to dry, followed by HEPA vacuuming of all
surfaces;

C. Be lightly encapsulated to lockdown residual asbestos.

5. The bagged waste shall be wet cleaned and/or HEPA vacuumed and then
transferred outside the negative pressure enclosure, double bagged in the Shower
Room, and appropriately handled prior to disposal.

G. Following negative pressure enclosure disposal and Work Area cleanup, workers shall
clean the outer layer of protective clothing by using the HEPA Filtered Vacuum Cleaner,
then carefully remove the outer layer and dispose in Disposal Bags. The workers shall
then proceed directly to the Decontamination Facility (contiguous or remote) and
proceed with required decontamination procedures.

H. Disposal of Asbestos-Containing Material shall be in accordance with Subsection 3.08.

02111-40

3.08

ASBESTOS WASTE DISPOSAL PROCEDURES

This Subsection specifies requirements for the removal, handling, and disposal of all
asbestos-containing materials from the site except for non-friable asbestos-containing
transite pipe that shall be disposed of in accordance with Subsection 3.06. All costs
associated with complying with this Subsection and any other applicable Federal, State,
or local regulations regarding packaging and disposal of ACM shall be included in
payment items in this Subsection.

The Contractor shall package, label, and remove all asbestos waste from the Work Area
or Regulated Area as specified below. Packaging shall be accomplished in a manner
that minimizes waste volume, but insures waste containers shall not tear or break.
Transportation and disposal of the containerized waste at a landfill previously accepted
by the Engineer shall be the responsibility of the Contractor.

Waste Labeling:

1. Warning labels, having waterproof print and permanent adhesive in compliance
with OSHA, EPA and Department of Transportation requirements, shall be
affixed to or printed on the sides of all Disposal Bags or transfer containers.
Warning labels shall be conspicuous and legible.

2. In compliance with NESHAPS, 40 CFR, Part 61.150, all waste containers or
Disposal Bags shall be labeled in accordance with applicable regulations and
include the following:

° Name of waste generator, and
° Location of where waste was generated.

Wetting of Waste: A fine water spray shall be used to keep the top layers of waste in
containers thoroughly wet at all trmes. When a waste bag 1s full, air within the bags
shall be evacuated with a HEPA Filtered Vacuum and be securely sealed with tape or
other secure fastener.

Waste Container Decontamination and Removal Procedures: The following procedures
shall be followed whenever containers or equipment are removed from the Work Area
through the personnel Decontamination Facility.

1. The Clean Room shall be considered a holding area only during the period of
active waste transfer for the purpose of the loading of carts or drums. Storage of

waste and carts (or drums) in the Clean Room 1s prohibited.

2. Waste removal shall not occur during worker shift changes or when workers are
showering or changing. Care shall be taken to prevent short circuiting and

02111-41

10.

11.

cycling of air outward through the Shower and Clean Room when used for waste
removal.

Workers are to be stationed in each room/area of the Decontamination Facility to
transfer the containers and equipment to or from adjacent sections. These workers
shall not cross the airlocks into the adjacent areas/rooms until the waste or
equipment transfer is finished for that period and the workers have gone through
decontamination as required by these Specifications. The workers in the Clean
Room or holding area shall enter from uncontaminated areas with appropriate
personal protective equipment; or prior to the start of waste transfer, these
workers shall exit the Work Area, fully decontaminated, and subsequently don
clean personal protective equipment.

External surfaces of contaminated containers and equipment shall be cleaned by
wet cleaning or HEPA vacuuming or both in the Work Area before moving such
items into the Decontamination Facility airlock. Workers shall not enter the
airlock during this procedure.

The containers of waste and the equipment shall be removed from the airlock by
workers stationed in the washroom during waste removal operations.

Once in the Shower Room or wash room, external surfaces of contaminated
containers and equipment shall be cleaned a second time by wet cleaning.

The cleaned containers of waste and equipment shall be placed in uncontaminated
Disposal Bags (or 6-mil sheeting if physical characteristics necessitate and
permit). Air volumes shall be minimized, and the bags or sheeting shall be sealed.

The clean recontainerized items shall be moved into the airlock for subsequent
transfer to the holding area. The Shower Room or wash room workers shall not
enter this airlock or the Work Area until waste removal is finished for the period.

Recontainerized items and cleaned equipment shall be removed from the airlock
to the holding area by workers who have entered from uncontaminated areas with
appropriate personal protective equipment.

The recontainerized items of waste and cleaned, bagged equipment shall be
placed in closed top, watertight plastic carts or drums. These carts or drums shall
be held in the holding area pending removal. The carts or drums shall be HEPA-
vacuumed or wet-cleaned following the removal of the containers of waste from
them.

The exit from the Decontamination Facility shall be monitored and secured at all
times to prevent unauthorized entry.

02111-42

r

a” Remittance: Invoice
oo 8 Tyler Technologies, Inc. ;
“ee oe be aroeee. o45-309607 00/01/0022 DoF?
( -_. P.O. Box 203556 - 9
e technologies
Dallas, TX 75320-3556
Questions:
Tyler Technologies - ERP & Schools
Phone: 1-800-772-2260 Press 2, then 1
Email: ar@tylertech.com
Bill To: City of Nashua Ship To: City of Nashua
229 Main Street 229 Main Street
P.O. Box 2019 P.O. Box 2019
Nashua, NH 03061-2019 Nashua, NH 03061-2019
Cust No.-BillTo-ShipTo Ord No PO Number Currency Terms Due Date
48638 - MAIN - MAIN 177861 USD NET30 10/01/2022
Date Description Units Rate Extended Price

**ATTENTION**

Order your checks and forms from
Tyler Business Forms at 877-749-2090 or
tylerbusinessforms.com to guarantee
100% compliance with your software.

Subtotal | 92,757.67 J

0.00

Invoice Total | 92,757.67 J

Sales Tax

12. The Decontamination Facility shall be wet cleaned using approved methods upon
completion of any waste removal.

13. Thecarts or drums may be temporarily stored in a holding area outside the Work
Area until a transport vehicle arrives, but such storage areas must be acceptable to
the Engineer.

14. Routes through the work area to be used for the transportation of contaminated
wastes shall be acceptable to the Engineer.

The container used for the storage of bagged contaminated waste shall be an enclosed
canister. Canisters shall have a solid metal roof and a solid metal door with padlock.
Line the cargo area with two layers of 6 mil polyethylene sheeting to prevent
contamination from damaged or leaking containers. Polyethylene floor sheeting shall be
installed first and shall extend up the sidewalls 24 inches minimum. Polyethylene wall
sheeting shall be overlapped and taped securely into place. No unbagged contaminated
waste or non-asbestos waste shall be stored in these containers. Ensure that bags placed
in containers are undamaged. Warning signs shall be posed on the container in
accordance with Sections 29 CFR 1926.1101 of the OSHA regulations.

The Contractor must pre-schedule and obtain the agreement of the Engineer for all time
periods Contractor desires to remove Disposal Bags from the facility. The Engineer
must observe removal of all waste containers to verify their condition and the total
volume of waste material (to the nearest cubic yard).

It 1s the responsibility of the Contractor to determine and insure that Contractor is
complying with: 1) the current waste handling regulations applicable to each Work
Area, and 2) the current regulations for transporting and disposing waste at each ultimate
disposal landfill. The Contractor must comply fully with these regulations; and with all
U.S. Department of Transportation, state, local, and EPA requirements.

Where required, the Contractor's waste hauler and disposal subcontractor shall maintain
a valid hazardous waste transporter's permit and identification number; and obtain,
complete, and fully comply with any other local waste manifesting requirements.

Waste Shipment Records (WSR): The Contractor shall be responsible for supplying,
preparing and signing all WSRs using a multi-part carbonless form set in the form
specified in 40 CFR 61.149 Figure 4 as required by 40 CFR 61.150 (d)(1). Blank forms
are available from the Engineer.

02111-43