SpecPartII.pdf

P. O. Box 896 Mauldin, South Carolina 29662

Phone(864)213-4408 Fax (864)213-4409

ENVIRONMENTAL TESTING & MANAGEMENT, INC.

Former Woodmont High School

ASBESTOS ABATEMENT SPECIFICATIONS

PART II - PROCEDURES PRIOR TO STARTING ABATEMENT

2.01 POST WARNING SIGNS. ESTABLISH REGULATED AREA.

Warning signs will be posted at all entrances to and exits from the work area. These signs shall conform to 29 CFR 1926.1101 (k) (6).

2.02 DECONTAMINATION FACILITIES FOR AREAS OF FRIABLE ABATEMENT

A. Work Decontamination Facility

Decontamination facilities will be constructed in such a manner as to provide workers and/or equipment within which to decontaminate themselves upon leaving the work area. The decontamination chamber will be constructed using 6-mil polyethylene sheeting and appropriate construction materials. The decontamination facility shall meet the following criteria as a minimum:

The exterior of the unit shall be constructed with 5/8" plywood. There will be a minimum of three chambers separated by air locks; (1) an equipment room where workers remove gross contamination and discard disposable suits; (2) a “single pass-through” shower (no shower may be used which can be passed by any person entering into or exiting from the work area);

and (3) a clean (change) room of sufficient size for workers to dress, undress and store their street clothing. The shower must be supplied with hot and cold water as well as soap and shampoo. Clean, dry towels must be available at the exit from the shower. The water from the shower must be filtered in accordance with EPA requirements or disposed of as contaminated waste. Separating each chamber and air lock will be triple curtains of polyethylene. A door, made of plywood, will be attached to the decontamination unit by hinges, mounted on the inside. A padlock will be attached to the door, securing the decontamination unit. A key will be provided to the air sampling professional.

B. Equipment Decontamination/Waste Load-out

Provide an Equipment Decontamination Unit for each full containment. Do not allow personnel to enter or exit work area through Equipment Decontamination Unit.

Former Woodmont HS Asbestos Abatement Part II - Page 2

Wash Area: Bags are to be cleaned to remove any visible debris.

Equipment or Material: take all equipment or material from the work area through the Equipment Decontamination Unit.

Cleaning of Decontamination Unit: Clean debris and residue from inside of Decontamination Unit on a daily basis. Damp wipe all surfaces after each shift change. Clean debris from shower pans on a daily basis.

If the fiber count inside the “clean” room exceeds 0.01 fibers/cc, then the “clean” room is to be considered contaminated. The Contractor shall immediately decontaminate the “clean” room by HEPA vacuuming and wet wiping the entire room. Upon completion of the decontamination process, clearance air monitoring shall be conducted

2.03 SEGREGATION OF WORK AREAS - GROSS REMOVAL AREAS

A. Isolation of Work Area

The Contractor shall isolate the entire exterior outer perimeter of the work area for the duration of the friable work. ETM has obtained a variance to only require critical barriers to be installed. All poly will be 6-mil. Isolation will be (minimally) accomplished via two independent critical layers of 6-mil polyethylene sheeting attached securely to the ceiling tile grid system. The only approved means of entry and exit to the work area shall be through the decontamination unit.

B. Protection of Existing Structure - NOT APPLICABLE

2.04 PREPARATION OF WORK AREA FOR ABATEMENT

A. Scaffolding

Provide all scaffolding, ladders and/or staging, etc. as necessary to accomplish the work of this contract. Scaffolding may be of suspension type; or standing type such as metal tube and coupler, tubular welded frame, pole or outrigger type or cantilever type. The type, erection and use of all scaffolding shall comply with all applicable OSHA provisions.

B. Water

1. Temporary water Service Connections:

All connections to the Owner’s water system shall include backflow protection.

Valves shall be temperature and pressure rated for operation at the temperatures and pressures encountered.

Part II - Page 3

2. Water Hoses: Employ heavy-duty abrasion-resistant hoses with a pressure rating greater than the maximum pressure of the water distribution system to provide water into each work area and to each Decontamination Unit. Provide fittings as required to allow for connection to existing wall hydrants or spouts, as well as temporary water heating equipment, branch piping, showers, shut-off nozzles and equipment.

C. Electrical

1. General: Comply with applicable NEMA, NECA and UL standards and governing regulations for materials and layout of temporary electrical service.

2. Temporary Power: The Contractor is responsible for all power in the areas where abatement is to occur.

3. Voltage Differences: Provide identification warning signs at power outlets which are other than 110-120 volt power. Provide polarized outlets for plug-in type outlets, to prevent insertion of 110-120 volt plugs into higher voltage outlets. Dry type transformers shall be provided where required to provide voltages necessary for work operations.

4. Ground Fault Protection: provide receptacle outlets equipped with groundfault circuit interrupters, reset button and pilot light, for plug-in connection of power tools and equipment.

5. Electrical Power Cords: Use only grounded extension cords: use “hard-service” cords where exposed to abrasion and traffic. Use single lengths or use waterproof connectors to connect separate lengths of electrical cords, if single lengths will not reach areas of work.

6. Lamps and Light Fixtures: Provide general service lighting for the work area.

Protect lamps with guard cages or tempered glass enclosures, where fixtures are exposed to breakage by construction operations. Provide exterior fixtures where fixtures are exposed to the weather or moisture.

D. Lighting

Provide the following where natural lighting or existing building lighting is not adequate.

1. In corridors and similar traffic areas.

2. In stairways and at ladder runs to illuminate each landing and flight.

3. Provide sufficient temporary lighting to ensure proper workmanship everywhere by combined use of daylight, general lighting, and portable plug-in task lighting.

Part II - Page 4

4. Provide lighting in the Decontamination Unit as needed for dressing, washing and decontamination activities.

E. Sanitary Facilities

The Contractor is responsible for providing sanitary facilities for the use of the Contractor’s personnel.

F. Fire Extinguishers, Portable

Comply with the applicable recommendations of NFPA Standard 10, “Standard for Portable Fire Extinguishers.” Locate fire extinguishers where they are most convenient and effective for their intended purpose. As a minimum, there shall be one extinguisher in each work area, one in each equipment room, and one located immediately outside the work area near the Decontamination Unit.

G. Adhesives

1. Where tape is used, it shall be a high quality duct tape, masking tape or vinyl plastic tape.

2. Where spray glue (cement) is used, it shall be specifically formulated for use on on polyethylene.

2.05 ISOLATION AND SHUT-DOWN OF BUILDING HVAC SYSTEM

NOT APPLICABLE

2.06 NEGATIVE PRESSURE ESTABLISHMENT AND MAINTENANCE

A. General

The Contractor will seal the work area in such a manner so as to be able, with the aid of negative pressure producing equipment, to produce a minimum differential pressure across the work area containment of -0.02 inches WC. The negative pressure producing equipment (hereafter referred to as micro-traps) will be used by the Contractor to exchange the air in the work area a minimum of 4 times per hour.

The final air filter in each unit shall be of the HEPA type. Each filter shall be certified by the manufacturer to have an efficiency of not less than 99.97% when tested with dioctylphthalate droplets of 0.2 micron size. The Contractor is not allowed to exhaust air contaminated with asbestos fibers to outside the containment area.

The Contractor shall provide a recording (printing) manometer to measure the negative pressure within the work area. The Contractor shall operate the manometer in a printing mode so that a paper record of the manometer readings is obtained.

Part II - Page 5

B. Determine Number of Units

The Contractor shall determine the minimum number of units needed to achieve a 15 minute change rate. The Contractor shall obtain the approval of the asbestos consultant regarding the number of units required. The Contractor shall have at least two (2) additional units in the work area as a backup in case of equipment failure or machine shutdown for filter changing.

The Contractor is reminded that the number of microtraps needed to achieve 4 air changes per hour does not guarantee that this number of microtraps will achieve the required level of negative pressure ( -0.02 inches WC.).

C. Location of Exhaust Units

The microtraps are to be placed to provide airflow across the work area.

D. Supplemental Makeup Air Inlets:

Provide where required for proper air flow through the work space, in location approved by the Asbestos Consultant, by making openings in the plastic sheeting that allow air from outside the work area into the work area. Cover with flaps to reseal automatically if the negative pressure system should shut down for any reason. Spray flap and around opening with spray adhesive so that flap seals when closed.

Before gross removal of the asbestos containing insulation begins, the Contractor will demonstrate to the satisfaction of the Asbestos Consultant that the work area has, with negative pressure equipment in operation, that a minimum pressure of -

0.02 in WC relative to the outside of the work area can be established and maintained.

E. Use of System During Abatement Operations

Start exhaust units before beginning work (before any asbestos containing material is disturbed). After abatement work has begun, run units continuously to maintain a constant negative pressure until decontamination of the work area is complete.

Do not turn off units at the end of the work shift or when abatement operations temporarily stop. Do not shut down negative air system during encapsulating procedures, unless authorized by the Asbestos Consultant in writing.

If an electric power failure occurs, immediately stop all abatement work and do not resume until power is restored and exhaust units are operating again.

At completion of abatement work, allow exhaust units to continue to run to remove airborne fibers that may have been generated during abatement work and cleanup and to purge the work area with clean makeup air.

Part II - Page 6

F. Dismantling the System

When a final inspection and the results of final air tests indicate that the area has been decontaminated, exhaust units may be removed. Before removal from the work area, remove and properly dispose of pre-filter, and seal intake to the machine with 6-mil polyethylene to prevent environmental contamination from the filters.