MOLD REMEDATION 02 85 16.pdf

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SECTION 02 85 16

MOLD REMEDIATION

PART 1 - GENERAL

1.1 PROJECT SCOPE OF WORK

A. General: The work specified herein shall be the remediation of materials with suspect mold growth by trained and certified workers who are knowledgeable, qualified and trained in the remediation, handling, and disposal of waste, and subsequent cleaning of the affected environment.

B. The Remediation Contractor shall supply all labor, materials, equipment, testing, services, permits, notifications, insurance, and incidentals which are necessary or required to perform the work in accordance with applicable local, state, and federal regulations as may be necessary for the mold remediation materials and for other work as specified in this section or as indicated in associated drawings.

C. The Remediation Contractor shall conduct a tool box talk with all contractor and subcontractor personnel to explain the work practices and controls to be implemented prior to the start of any remediation.

D. Mold Remediation of Suspect Mold Contaminated Wallboard

1. Construct a negative pressure containment in conjunction with the specified area in the building 4 canteen with suspected mold growth.

Remove all materials with suspected mold growth including drywall, flooring, and ceiling tiles and thoroughly clean the surrounding areas and containment. The affected areas should be lightly misted with an Environmental Protection Agency (EPA) registered antimicrobial solution and temporarily encapsulated with paint in a manner that minimizes the release of airborne mold spores.

2. All openings in any duct work within 30 feet of the removal operations shall be properly sealed with vinyl tape prior to the start of any remediation work. The affected areas should be lightly misted with an Environmental Protection Agency (EPA) registered antimicrobial solution and temporarily encapsulated with paint in a manner that minimizes the release of airborne mold spores.

3. All quantities are approximate and must be field verified by the

Remediation Contractor. Remediation Contractor is responsible for accurately determining the amount of material for removal.

Quantities provided are only included to assist Remediation Contractor in determining the amount of material designated for removal. No change order will be issued, unless actual quantities differ significantly (>25%) from those listed above.

1.2 RELATED WORK:

A. General: Section 01 00 00, GENERAL REQUIREMENTS.

B. Infectious Control: Section 01 00 00, GENERAL REQUIREMENTS, Article

1.7, INFECTION PREVENTION MEASURES.

C. Environmental Protection: Section 01 57 19, TEMPORARY ENVIRONMENTAL

CONTROLS.

D. Construction Waste Management: Section 01 74 19, CONSTRUCTION WASTE

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MANAGEMENT.

1.3 SUBMITTALS

A. Submittals: (Items 1-7 will be considered Pre-Work Submittals)

1. List of all personnel to be involved in the work with their training and certifications.

2. List of all products and procedures proposed for use in performance of the work, when required:

a. List all work areas and containments,

b. Locations and types of all decontamination enclosures,

c. Entrances and exists to the work area and/or containments,

d. Type of remediation activity, technique for each work area and/or containment,

e. Number and location of negative air units and exhausts,

f. Calculations for determining number of negative air pressure units,

g. Location of water and electric connections to building services,

h. Waste transport routes from the work area to the waste storage container.

3. Respiratory Protection Program

a. Provide a copy of the firm’s written respiratory protection program.

b. Respirator fit tests for personnel involved in the work

c. Medical approvals of respirator use for personnel involved in work

4. Employee Training Program

a. Provide a copy of the firm’s written employee hazard communication program.

b. The communication program will provide a review the potential exposure with fungal spores during remediation work.

c. The communication program will provide a review of the potential exposure with the cleaning agents to be used during the remediation work.

5. Employee Instruction Provide documentation showing that each employee has been instructed on the following items:

a. Use and fit of respirator

b. Protective clothing

c. Protective measures

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d. Safety and Emergency Egress Procedures

e. Site specific fall protection plan and training

6. Material Safety Data Sheets (MSDS)

Provide a MSDS on the cleaning agents selected for use on this project. Substitution of alternative products is not permitted without authorization from the VA Medical Center’s Professional Industrial Hygienist (VPIH).

7. Preliminary Schedule:

Provide an estimate of manpower to be utilized and the time required for completion of each major Work Area. Include estimated size and number of crews and work shifts.

8. Project Close-out Submittals:

a. All waste disposal tickets,

b. Daily progress logs,

c. A list of all Workers used in the performance of the project.

B. Quality Assurance

1. Conform to all Federal, State, and Local regulations, guidelines and rules which govern the handling and disposal of mold materials.

a. United States Environmental Protection Agency (EPA) Mold

Remediation in Schools and Commercial Buildings, EPA 402-K- 01-001.

b. New York City Department of Health & Mental Hygiene

Guidelines on Assessment and Remediation of Fungi in Indoor Environments.

c. Occupational Safety and Health Administration (OSHA)

Respiratory Protection Standard, 29 Codes of Federal Regulations (CFR) 1910.134.

d. OSHA – Fall Protection, 29 CFR 1926.451 to 1926.1060.

e. OSHA Lockout Tag-out 29 CFR 1926.417 and 1926.702.

C. Record Keeping

1. Daily Log The Remediation Contractor shall maintain a Daily Project Log in a three-ring binder. The daily project log will be utilized each day to document the following information:

a. Date and time of the project,

b. Name of Project Superintendent,

c. Brief description of daily work activities,

d. Contained area sign in and sign out sheet,

e. Clearance check by the VA Medical Center’s Professional Industrial Hygienist (VPIH).

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Part 2 - MATERIALS AND PRODUCTS

2.1 PPE AND FILTERS

A. Protective Clothing

1. The Remediation Contractor will provide the workers with the required protective disposal clothing as recommended in the referenced guidelines, consisting of full-body coveralls, head covers, gloves and boots.

2. The Remediation Contractor will not under any circumstances permit any person to enter the work areas without the appropriate protective clothing and equipment. The Remediation Contractor will provide protective clothing for use by the VPIH. The Remediation Contractor will furnish as many sets as required for full-time monitoring.

B. Respiratory Protection

1. Respirators and High Efficiency Particulate Air (HEPA) filters will be used, when required, as recommended in the guidelines and approved by the National Institute of Occupation Safety and Health

(NIOSH).

2. Respirators will be individually fit-tested to personnel on a yearly basis.

3. No respirator will be issued to personnel without such personnel participating in a respiratory training program.

4. The Remediation Contractor shall provide and make available a sufficient quantity of respirator filters so that filter changes can be made as necessary during the workday. Filters will be removed and discarded during the decontamination process. Filters cannot be reused. Filters must be changed if breathing becomes difficult.

C. HEPA Filter Equipment

1. All fan and vacuum units will be equipped with a High Efficiency Particulate Absolute (HEPA) filter.

a. Containment areas, where required, will be maintained under negative pressure relative to the surrounding area. This will be accomplished with a HEPA-filtered fan unit exhausted to the outside.

b. All interior surfaces to be cleaned, exterior of plastic sheeting containing waste material, final vacuuming of the interior surfaces of the work area and surfaces outside of the work area where dust may have settled will be HEPA-vacuumed.

2. Cleaning Agent

a. When specified, a cleaning agent will be applied with a moist cloth, sprayed or as specified by the manufacturer.

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2.2 ANTIMICROBIALS

A. Antimicrobial cleaning solution / biocide shall be an EPA-registered product. The solution shall be used for its intended use and applied in accordance with the manufacturer recommendations. Product data sheets and MSDS’s shall be submitted to the VPIH and the VA Contracting Officer’s Representative (COR) for approval prior to its use or application.

B. Long-term Antimicrobial Coating shall be an EPA-registered antimicrobial coating that maintains its antimicrobial coating after the solution has dried. The coating shall be used for its intended use and applied in accordance with the manufacturer’s recommendations. Product data sheets and MSDS’s shall be submitted to the VPIH and COTR for approval prior to its use or application.

3 EXECUTION

3.1 STANDARD PROCEDURES

A. The scope of work includes removal of suspected fungal growth contamination on building materials. The abatement procedures will be identified for each remediation project based on the size, complexity and remediation methods required. The size of the area impacted by fungal contamination will determine the type of remediation. The sizing levels will be based on professional judgment by the VPIH, utilizing the EPA - Mold Remediation in Schools and Commercial Buildings or the NYC Department of Health & Mental Hygiene Guidelines on Assessment and Remediation of Fungi in Indoor Environments. These guidelines will be utilized to develop the remediation plan, along with any site-specific requirements.

1. Pre-construction Meeting:

a. Prior to the start of preparatory work, the Remediation Contractor will attend a pre-construction meeting attended by the COR and VPIH. All pre-work submittals will be submitted 7 days prior to the pre-construction conference; the Remediation Contractor will submit 3 copies of the Pre-Work Submittals.

2. Progress Meetings:

a. While on-site for each phase, the Remediation Contractor will attend weekly progress meetings attended by the general contractor, COR, VPIH, and other applicable project related personnel. The remediation contractor shall be prepared to discuss progress, schedule, payment applications, proposed changes, problems & corrective measures, and other pertinent information regarding the project.

b. If, in the opinion of the COR, additional meetings are required to maintain progress or scheduling requirements on the work, additional meetings will be scheduled.

3. Project Monitoring and Air Sampling:

a. The VA Medical Center will engage the services of VPIH who will serve as the VA Medical Center's Consultant in

02 85 16 – 6 regard to the performance of the remediation work and provide direction as required throughout the entire remediation phase.

b. The Remediation Contractor shall ensure cooperation of its personnel with the VPIH for the air sampling and Project monitoring functions described below. The Remediation Contractor shall comply with all direction given by the VPIH during the course of the Project.

c. The VPIH will review and approve or disapprove all submittals, shop drawings and schedules. The VPIH will provide visual inspections prior to the start of work and final inspections of the work areas. The VPIH will provide bulk and air sampling services when required.

4. Project Supervisor

a. The Remediation Contractor will designate a full-time Project Supervisor who is qualified to enter the work areas and meets the requirements of a “Competent Person” as defined by OSHA 1926.1101. The Project Supervisor must be able to read and write English fluently, as well as communicate in the primary language of the Workers.

b. If the Project Supervisor is not on-site at any time whatsoever, all work will be stopped. The Project Supervisor will remain on-site until the Project is complete.

c. The Project Supervisor will maintain a Project Log Book and a Waste Disposal Log.

d. The Project Supervisor will be responsible for the performance of the work and will represent the Remediation Contractor in all respects at the Project site. The Supervisor shall be the primary point of contact for the VPIH.

5. Hazard Communication

a. The Remediation Contractor shall post warning signs at all entrances or openings to the work areas. Warning signs may be in the form of continuous plastic tape.

b. The Remediation Contractor will coordinate with the COR and the VPIH regarding notification of the occupants and other Contractors on-site.

6. Temporary Utilities

a. Shut down and lock out all electrical power to the Work Areas.

b. Provide temporary electric service, sized properly for the project, with Ground Fault Circuit Interrupters (GFCI) for all electric requirements within the work area.

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1. Where available, obtain from the VA Medical Center's existing system. Otherwise provide power from other sources (i.e. generator).

2. Provide temporary wiring and "weatherproof" receptacles in sufficient quantity and location to serve all HEPA equipment and tools.

3. Provide wiring and receptacles as required by the

VPIH for air sampling equipment.

4. All power to the Work Area shall be brought in from outside the area through GFCI's at the source.

c. Provide temporary lighting with "weatherproof" fixtures for all work areas including decontamination chambers.

1. The entire work area shall be kept illuminated at all times.

2. Provide lighting as required by the VPIH for the purposes of performing required inspections.

d. All temporary devices and wiring used in the work area shall be capable of decontamination procedures including HEPA vacuuming and wet-wiping.

e. Utilize domestic water service, if available, from VA

Medical Center's existing system. Provide hot water heaters with sufficient capacity to meet Project demands.

7. Containment Barriers

a. When containment of the work area is required, the Remediation Contractor must be careful not to disturb fungal contaminated building materials while isolating work areas to prevent the release of fungal spores. Any pre-cleaning prior to the erection of the containment will be completed as required. Workers shall wear respirators when installing isolation barriers if fungal contaminated surfaces (walls or surfaces with visible settled dusts) are likely to be disturbed. The Remediation Contractor shall completely isolate the work areas for the duration of the work by sealing off all walls, floors, openings, and fixtures in the work areas including, but not limited to, heating and ventilation supply air ducts and diffusers and return air ducts and grilles (HVAC system totally de-energized - no HVAC system airflow into or out of work area), return air grilles, common return air plenums, doorways, corridors, windows, skylights, and lighting with polyethylene sheeting held securely in place as described in this section.

b. Containment Entry and Exit Procedures will be established as required for the work.

c. Personnel, Equipment and Waste Decontamination Procedures will be established as required for the work.

8. Negative Pressure

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a. When Negative Pressure is required, the Remediation Contractor shall establish a negative air pressure differential inside the enclosed areas relative to interior areas outside the containment before remedial operations begin. All air shall be exhausted through a HEPA filter to the exterior of the building, unless the air is passed through two HEPA filters.

1. Minimum Negative Pressure: 4 air exchanges per hour

b. The Remediation Contractor shall ensure that air pressure differential is maintained, demonstrated by manometer until the VPIH has determined that the work area has passed the final inspection.

1. Minimum Negative Pressure: Differential 0.02” of water

9. Work Procedures

a. All materials will be decontaminated and/or removed under containment, or mini-containment. As waste is removed, it will be promptly placed into a disposal container.

Disposal containers, at a minimum, will consist of double bagging using 6-mil polyethylene bags. Bags will be taped to form an airtight seal and labeled appropriately.

Waste from HEPA-filtered vacuums shall be double bagged in 6-mil polyethylene bags.

b. The Remediation Contractor at all times will keep the site and work area free from accumulations of bagged material or rubbish caused by its operations and free from any flammable materials or other source of fire hazard. During the performance of the work, the Remediation Contractor shall remove all bagged material from and about the work site in strict accordance with the specifications and applicable codes and regulations.

c. All visually contaminated materials and adjacent visually uncontaminated material will be decontaminated and/or removed under full containment unless specified otherwise.

d. In the event that areas adjoining the enclosed project area become or are suspected of becoming contaminated with spores as a result of the Remediation Contractor's work, the Remediation Contractor shall thoroughly and totally decontaminate (for example, use separate HEPA vacuum in occupied space) the affected areas. These areas shall be subject to detailed visual inspection and final clearance sampling as may be requested by the VPIH.

10. Work Stoppage

a. Regardless of the removal methods employed, the Remediation Contractor shall immediately stop work in the event of any of the following:

1. Containment has been breached;

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2. Contaminated debris is found outside the containment work area;

3. Elevated dust or mold spore results identified in the adjacent areas;

4. Any emergency;

b. If any of the conditions in subparagraph a above are observed by the VPIH or COR, then either of these parties have the right to issue a directive to stop work.

c. Furthermore, the Remediation Contractor shall implement corrective work practices with the approval of the VPIH, and with all referenced regulations in this document and the applicable sections of this specification as noted.

d. The Remediation Contractor shall not be entitled to additional compensation in the event of the conditions of subparagraph a above.

11. Worker Protection

a. There are no specific levels of acceptable or unacceptable levels of total mold spores established by the EPA or OSHA at the time of this project. Several of the identified mold species can produce mycotoxins, which can cause health symptoms in certain sensitive individuals. It should be noted that previous background samples were collected under static conditions with low activities. In addition, the affected materials were predominantly wet, potentially minimizing airborne levels. Increase airborne levels would be anticipated as the materials dry out and with increased activity.

b. The Contractor shall abide by all applicable federal, state, and local regulations for worker protection, and shall be responsible for the health and safety of its employees. The contractor shall also provide appropriate personal protective equipment (PPE) for its employees.

c. Minimum PPE Requirements

1. Respirators: Half-faced Respirators equipped with P100 filters

2. Disposable Clothing: (All Tasks)

3. Rubber Gloves: (All Tasks with Anti-microbial solutions)

d. The contractor shall submit evidence that their personnel have been trained in the use of respirators and are enrolled in a medical surveillance program that meets the minimum OSHA requirements under 29 CFR § 1910.134 prior to commencement of the work. It shall be the contractor’s responsibility to increase respirator protection as required.

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e. Decontamination

1. Decontamination units shall be used whenever a specific containment involves the removal of more than 20 linear feet or 20 square feet of affected building materials.

2. The locations of the decontamination units shall be field verified with the VPIH and COR.

3. The crew shall properly decontaminate themselves each time they leave the work area to prevent the migration of mold spores away from the work area.

The field supervisor shall be responsible for ensuring that proper decontamination procedures are followed.

4. The temporary water or hose connection shall be properly shut down and disconnected at the end of each shift.

12. Clearance Preparation

a. When containment areas are not utilized, the work area and areas used by remedial workers for egress will be cleaned as specified.

b. When containment areas are utilized, all work area side surfaces and layers, of the polyethylene barrier sheeting will be cleaned as specified. If negative pressure is utilized, the negative air machines will remain on until notified by the VPIH.

13. Final Clearance Inspections

a. After all visible accumulations of material and debris are removed; the Remediation Contractor will notify the VPIH for a final clearance visual inspection. The Remediation Contractor and VPIH will conduct a thorough visual inspection of the work area(s). If during this inspection, any visible dust or debris is observed, the Remediation Contractor will contain and re-clean the work area(s). The Remediation Contractor will pay all associated costs for the re-cleaning services.

b. Breakdown of containment will proceed only upon receipt by the Remediation Contractor of clearance issued by the

VPIH.

14. Post-Remediation Air Sampling

a. The VPIH will conduct post-remediation air sampling using fungal spore traps for any negative pressure containments. No final clearance sampling will be collected for the mini-containments, due to amount affected materials. Air samples will be analyzed by an AIHA accredited microbiological laboratory. If the total and individual fungal spore concentrations inside containment are elevated when compared to outside ambient air, the Remediation Contractor will conduct additional cleaning, and then the sampling process will be repeated.

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15. Restoration of Utilities, Firestopping and Finishes

a. After final clearance, remove locks and restore electrical and HVAC systems. All temporary power will be disconnected, power lockouts removed and power restored. All temporary plumbing will be removed.

b. Finishes damaged by the Remediation

Contractor including, but not limited to, plaster/paint damage due to duct tape and spray adhesives, and floor tile lifted due to wet or humid conditions, will be restored and/or replaced prior to final payment. All foam and expandable foam products and materials used to seal work area openings will be completely removed upon completion of remediation activities.

c. All penetrations (including, but not limited to, pipes, ducts, etc.) through fire rated construction will be fire stopped using materials and systems tested in accordance with ASTM E814 on Projects where re-insulation is part of the required work.

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