10_02_85_00_Microbial_Remediation_-_Amendment_0003_0003.pdf

NATIONAL PARK SERVICE

REHABILITATION OF THE EIELSON VISITOR CENTER

DENALI NATIONAL PARK AND PRESERVE, ALASKA

SECTION 02 85 00

MICROBIAL REMEDIATION

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PART 1 GENERAL

1.1 SECTION 02 85 00 – MICROBIAL REMEDIATION

A. The overall scope of work for this project is to complete limited renovations at the Eielson Visitor Center as detailed in other sections. Existing documents for the proposed con-struction area(s) and scope of work have been reviewed for potential microbial impacts as part of this proposed renovation.

B. Building components that have been damaged by water and moisture are expected to require microbial remediation in some locations. The intent of this project is to manage only those materials that are being disturbed or generated by other disciplines. Compre-hensive microbial remediation of the entire facility is not an objective of this project un-less specified by the Contracting Officer.

C. Provide microbial growth discovery and response work, including handling and control of suspect microbial impacted materials, containment and engineering controls propor-tional to the condition encountered, and worker protection. The plan shall include the necessary procedures and equipment required to protect workers, the environment and occupants of the building or area, or both, from contact with active microbial growth and spores. The work also includes the documentation prior to demolition, as well as disposal and verification of clearance of any microbial contaminated materials generated by the work after demolition.

D. Microbial remediation activities within this Section shall be tracked and invoiced under the separate unit-priced microbial remediation CLIN items identified in Section B / Sched-ule of Items and coordinated with Section H. The unit-priced CLIN items are estimated quantities and are not lump-sum entitlements. Payment shall be based on actual docu-mented and Contracting Officer-authorized quantities/events accepted by the Govern-ment.

1.2 SCOPE OF WORK

A. The scope of the repairs to the building includes work on the exterior and the interior of the structure, including replacement of the roof and many interior finishes. The required microbial remediation monitoring requirements for this work are detailed in this specifi-cation.

B. Provide containment and engineering control techniques proportional to the extent and exposure risk of the condition encountered as outlined in this specification and based on the Controlled Demolition and Escalation Protocol described in this Section and approved in the Contractor’s project plans. Microbial remediation work shall be supervised by the Contractor’s qualified remediation personnel and Competent Person. The COR/CMR may

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02 85 00 - 2 observe, document, and verify quantities/events for contract administration purposes, but Government observation does not relieve the Contractor of responsibility for means, methods, worker safety, containment, remediation, disposal, or compliance with contract requirements

C. The following microbial remediation specifications apply to the cleaning / removal and disposal of microbial-contaminated porous, semi-porous and non-porous surfaces within various types of structures. Routine demolition shall proceed under applicable demoli-tion, dust control, and worker safety requirements unless suspect mold or microbial growth is encountered or controlled demolition procedures are required by the approved Microbial Remediation Plan / Controlled Demolition Work Plan. Suspect mold or microbial growth encountered in any area designated for demolition or material removal shall be managed in accordance with this Section. The level of containment, qualified remediation personnel, Competent Person presence, CIH/IH involvement, and clearance verification shall be proportional to the extent, location, material type, and exposure risk of the con-dition encountered. Porous and semi-porous materials supporting microbial growth shall be disposed of unless retained for structural purposes or otherwise accepted by the Con-tracting Officer or designee.

D. Prepare a Microbial Remediation Plan / Controlled Demolition Work Plan for review and acceptance by the Contracting Officer. The plan shall be prepared by the Contractor and signed by the Contractor’s Competent Person and qualified remediation profes-sional/IH/CIH, as applicable to the work. Include in the Plan identification of designated high-risk areas and all demolition/material removal areas where suspect mold or micro-bial growth may be encountered; proposed sequencing; targeted destructive assessment approach; containment approach; worker protection; unit-price CLIN tracking proce-dures; documentation requirements; and an assessment of risk for construction workers completing work in adjoining or unaffected areas. The plan must be proportional to the complexity, exposure risk, and location of the work. Upon the Contractor's CIH approval of the plan, submit the plan to the Government for approval.

E. Use proper cleaning procedures, engineering controls, and apply best management prac-tices detailed in the Microbial Remediation Plan / Controlled Demolition Work Plan to remove microbial growth and spore fallout from surfaces and building materials to mini-mize the further release of microbial spores. Remove and dispose of porous building ma-terials that are supporting microbial growth.

F. The COR/CMR may observe remediation work, review documentation, and verify quanti-ties/events for contract administration purposes. The Government may require correc-tive action for work or practices that are not in compliance with the approved Microbial Remediation Plan / Controlled Demolition Work Plan or contract requirements. Govern-ment observation or acceptance does not relieve the Contractor of responsibility for means, methods, worker safety, containment, remediation, disposal, or compliance with contract requirements.

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1.3 USE OF INFORMATION

A. This Section is provided for the Contractor's information and use in the planning and per-formance of work in areas containing microbial growth.

1. The information provided in this Section is based on project drawings and prior condition assessment and investigative reports. Specific conditions encountered at the facility may vary from the information presented in the project documents.

2. The data reported in this Section is accurate to the best of the Government’s knowledge. The Contractor is responsible for evaluating existing conditions, cre-ating the work plan, and complying with contract documents, and applicable fed-eral, state, and local regulations. The Government disclaims all responsibility for the Contractor's erroneous conclusions regarding the information presented in the project documents.

3. The Contractor shall be responsible for obtaining additional information if the Contractor deems it necessary to carry out the work.

B. It is highly recommended that the Contractor visit the site to acquaint themselves with existing conditions.

1.4 MICROBIAL GROWTH NOTIFICATION

A. Previous reports have indicated water/moisture intrusion and/or visible microbial con-tamination has been observed intermittently in the ceilings, interior/perimeter walls, floors, and other water-damage areas across the facility. The source of the water is un-derstood to be leaks in the roof, particularly near existing skylights and other penetra-tions.

B. Notification of Potential Hazards: Evidence of active and/or past microbial growth (mold, fungal amplification) is present in the building that may impact the work of all trades.

Microbial contamination may also be present in settled and concealed dust in and on ar-chitectural, structural, mechanical and electrical components or systems associated with this project.

C. All trades shall coordinate with other trades and conduct their work in a manner that prevents worker exposure and site contamination. Full microbial remediation controls shall apply only where required by this Section, the approved Microbial Remediation Plan / Controlled Demolition Work Plan, or direction from the Contracting Officer’s Repre-sentative.

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1.5 REFERENCE STANDARDS

A. The publications, including standard definitions and abbreviations, listed below form a part of this Specification to the extent referenced. The publications are referred to in the text by basic designation only. In case of conflict the most stringent shall apply.

United States Archives and Records Administration Team (NARA)

Title 29 Codes of Federal Regulations (CFR), Department of Labor (USDOL)

Part 1910 General Occupational Safety and Health Standards

Part 1926 Safety and Health Regulations for Construction

Title 40 CFR, EPA

Part 61 National Emission Standards for Hazardous Air Pollutants

Part 311 Worker Protection

State of Alaska Administrative Codes (AAC)

8 AAC 61 Occupational Safety and Health Standards

18 AAC 60 Solid Waste Management

State of Alaska Statutes

AS 45.50.477 Titles Relating to Industrial Hygiene

American Industrial Hygiene Association (AIHA)

AIHA IMOM08-679 (2008) Recognition, Evaluation, and Control of Indoor Mold

American Society of Safety Professionals (ASSP)

ASSP Z9.2 (2018) Fundamentals Governing the Design and Operation of Local Exhaust

Ventilation Systems

Institute of Inspection, Cleaning, and Restoration Certification (IICRC)

ANSI/IICRC S520 (2015) Standard and Reference Guide for Professional Mold Remediation

IICRC S500 (2015) Standard and Reference Guide for Professional Water Damage Restoration

UL Solutions (UL)

UL 586 (2009; Reprint Sep 2022) UL Standard for Safety High-Efficiency Particulate, Air Filter Units

1.6 DEFINITIONS

A. AIHA: American Industrial Hygiene Association.

B. AIHA EMLAP: American Industrial Hygiene Association's Environmental Microbiology La-boratory Accreditation Program

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C. Air filtration unit (AFU) with High Efficiency particulate air (HEPA) filtered vacuum and exhaust ventilation equipment with a filter system capable of collecting and retaining mi-crobial contamination ASSP Z9.2. Filters must retain 99.97 percent of particles 0.000012 inches or larger as indicated in UL 586.

D. Certified Industrial Hygienist (CIH): An individual that has been certified by the Board for Global EHS Credentialing (BGC), formerly known as the American Board of Industrial Hy-giene (ABIH), with professional qualifications and experience as required for an industrial hygienist, as presented in the definition of "Industrial Hygienist."

E. Competent Person: A person designated by the Contractor who is qualified by training and experience to identify existing and predictable microbial hazards associated with the work and who has the authority to implement prompt corrective measures.

F. Containment: Physical separation and engineering controls required to prevent contami-nation of undamaged materials and occupied areas. The level of containment varies de-pending on the extent of the contamination and the nature of the work area.

G. Contracting Officer: The individual with the authority to enter into, administer, or termi-nate the contract and make related determinations.

H. Contracting Officer’s Representative (Designee) or Construction Manager’s Representa-tive (COR/CMR): The Government’s designated field representative for observation, co-ordination, documentation, submittal receipt, and communication as authorized by the Contracting Officer. The COR/CMR does not have authority to change contract cost, time, or scope unless expressly delegated in writing by the Contracting Officer.

I. Controlled Demolition and Escalation Protocol: Project-specific framework described in this Section that will be further detailed in the Contractor’s Microbial Remediation Plan / Controlled Demolition Work Plan to document existing conditions and move forward with demolition and construction with minimal disruption to the overall project schedule.

J. Dehumidifier: Mechanism or machine to remove moisture from the air.

K. Designated High-Risk Areas: Water-damaged or moisture-prone areas identified in the drawings, specifications, condition assessment documents, Contractor’s preliminary site inspection/destructive assessment, or approved Microbial Remediation Plan / Controlled Demolition Work Plan. Identification of high-risk areas is intended to support planning, sequencing, containment strategy, and quantity tracking, but does not limit application of this Section. Suspect mold or microbial growth encountered in any area designated for demolition or material removal shall be managed in accordance with this Section.

L. Disinfectants or Biocide Sanitizing Solutions: One of three groups of antimicrobials regis-tered by the EPA for public health uses. The EPA considers an antimicrobial to be a disin-fectant when it destroys or irreversibly inactivates infectious or other undesirable organ-isms, but not necessarily their spores.

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M. EPA: U.S. Environmental Protection Agency.

N. Fungicidal Agents, (EPA): An EPA registered fungicide that inhibits the spread and growth of mold with the ability to withstand moist and humid conditions.

O. Government: The United States of America / National Park Service.

P. HEPA Filter: A High Efficiency Particulate Air (HEPA) filter capable of trapping and retain-ing 99.97 percent of all particulate larger than 0.000012 inches.

Q. HVAC: Heating, Ventilating, and Air Conditioning (System).

R. Industrial Hygienist (IH): An individual designated and provided by the Contractor that is a professional qualified by education, training, and experience to anticipate, recognize, evaluate, and develop controls for occupational and indoor air quality hazards. Individual responsible for the execution of the microbial remediation work as defined by the scope of work. The State of Alaska AS 45.50.477 (A)-(C), requires an IH to be a person who has earned a baccalaureate or graduate degree in industrial hygiene, biology, chemistry, en-gineering, physics, or closely related physical or biological science from an accredited uni-versity and has acquired competence in industrial hygiene through special studies or work experience sufficient to provide the ability to anticipate and recognize the environmental factors and stresses associated with work and work operations and understand their ef-fects on people and their wellbeing; evaluate on the basis of training and demonstrated work experience and with the aid of quantitative measurement techniques the magni-tude of their ability to impair human health and wellbeing; and prescribe methods to pre-vent, eliminate, control, or reduce the factor and stresses necessary to alleviate their ef-fects. The Industrial Hygienist must be a CIH or working under the supervision of a Certi-fied Industrial Hygienist.

S. Microbial Growth: Visible or suspected mold, fungal amplification, or microbial contami-nation associated with water-damaged or moisture-impacted building materials.

T. Microbial Remediation Plan / Controlled Demolition Work Plan: The Contractor’s written plan for identifying high-risk areas and designated demolition/material removal areas where suspect mold or microbial growth may be encountered; performing targeted de-structive assessment; sequencing demolition; implementing containment and worker protection; documenting conditions and quantities; conducting remediation; verifying completion; and tracking unit-price CLIN quantities/events.

U. Mold Containment / Mobilization / Clearance Event: One authorized setup of a contained remediation work area, including containment setup, isolation, negative air/HEPA con-trols where required, signage, protection, demobilization, and associated visual clearance and/or testing documentation prior to reconstruction. Multiple mold discoveries within the same established containment area and work phase shall be considered part of the same event unless otherwise authorized by the Contracting Officer.

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V. Mold-Impacted Wall/Floor/Ceiling Assembly Remediation: Removal/remediation of af-fected gypsum board, wall systems, flooring/subfloor materials, ceiling materials, af-fected insulation where present, cleaning of exposed framing/substrate, bagging, han-dling, disposal, and required documentation associated with authorized microbial reme-diation work. Measurement shall be by square foot of documented and accepted affected assembly area.

W. Non-Porous Material: A material that does not absorb nor is easily penetrated by liquids, especially water. Generally, non-porous materials have a permeable factor of less than one. Some examples are metal, glass, plastic, ceramic tile.

X. Occupied Spaces (Areas): The phrase "occupied space" within this specification refers to spaces that are occupied by unprotected non-remediation personnel while work is in pro-gress. It also refers to areas adjacent to work areas that are not currently undergoing remediation.

Y. Personal Protective Equipment (PPE): Any material or device worn to protect a worker from exposure to, or contact with, any harmful material or force. Standard PPE (such as hard hats, safety glasses, work boots, gloves) must be cleaned or disposed of prior to removal from the remediation work area.

Z. Porous Material: Permeable materials having the physical properties that allow liquids or gasses to pass through. These materials include but are not limited to the following: gyp-sum wallboard, insulation, wallpaper, ceiling material, carpet, padding, paper goods (i.e., cardboard boxes, loose paper, books), stuffed furniture, wicker, fabrics.

AA. Qualified Remediation Contractor or Personnel: A Contractor, Subcontractor, or person-nel experienced and trained in mold/microbial remediation, containment, PPE, respira-tory protection, removal, cleaning, disposal, and documentation procedures appropriate for the work being performed.

BB. Routine Demolition: Demolition work performed under normal dust control and worker safety requirements where suspect microbial growth is not encountered, and fungal re-mediation controls are not required by the approved Microbial Remediation Plan / Con-trolled Demolition Work Plan.

CC. Safety Data Sheets (SDS): Standardized document that provides comprehensive safety, handling, storage, and emergency information about hazardous chemical products. SDS shall be submitted for all materials brought to the site related to this section, whether or not these materials are used

DD. Semi-porous Material: A material that can absorb liquids if exposed over long periods of time. These materials include but are not limited to wood, concrete, linoleum, vinyl wall covering, wooden or hardboard furniture, plaster.

EE. Work Area: The area where remediation operations are actively performed, as identified in the drawings, approved Microbial Remediation Plan / Controlled Demolition Work Plan, DENALI NATIONAL PARK AND PRESERVE, ALASKA

02 85 00 - 8 targeted destructive assessment findings, or field documentation accepted by the Con-tracting Officer or designee.

1.7 QUALITY ASSURANCE

A. On-site Observation

1. The safety and protection of the Contractor’s employees, sub-contractor’s em-ployees, Government’s employees, the facility, and the public is the sole respon-sibility of the Contractor.

2. The contractor shall provide clean, protective clothing and PPE for CMR use on-site when they are conducting inspections within work areas. If the work requires the use of Powered Air Purifying Respirators (PAPR) or Supplied Air Respirators, the contractor shall provide respirators to the CMR and ensure compatibility with fresh batteries or the supplied air system. It is the CMR’s responsibility to ensure medical qualification, training, and current “fit test” prior to using any respirator provided by the Contractor

3. The Government, the Government’s Representative or other representative(s), or representatives of State or Federal agencies may make unannounced visits to the site during the work. The contractor shall make available two complete sets of clean, protective clothing for such visitor use. If the work requires the use of Powered Air Purifying Respirators (PAPR) or Supplied Air Respirators, the contrac-tor shall provide respirators to the visitor and ensure compatibility with fresh bat-teries or the supplied air system. It is the visitor’s responsibility to ensure medical qualification, training, and current “fit test” prior to using any respirator provided by the Contractor.

4. If the COR/CMR, Government representative, or agency visitor observes practices that appear to violate applicable regulations, contract requirements, or the ap-proved Microbial Remediation Plan / Controlled Demolition Work Plan, they may direct the Contractor to secure the affected area to prevent exposure or spread of contamination and shall notify the Contracting Officer. Formal direction affect-ing contract cost, time, scope, or restart authorization shall be issued by the Con-tracting Officer.

5. The Contractor shall take immediate protective action to secure the affected area when notified of a potential unsafe or noncompliant condition. Work in unaf-fected areas may continue unless otherwise directed by the Contracting Officer.

6. Costs resulting from Contractor noncompliance shall not be a basis for an increase in contract price or time.

B. Personnel Qualifications and Training

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1. Work involving suspect mold or microbial growth shall be performed by qualified remediation personnel or a qualified remediation subcontractor when required by the approved Microbial Remediation Plan / Controlled Demolition Work Plan when containment controls are implemented, or when authorized remediation is performed under the separate unit-priced microbial remediation CLIN items iden-tified in Section B / Schedule of Items.

2. The Contractor shall designate a Competent Person. The Competent Person shall be onsite during active microbial remediation activities, including containment setup, removal, cleaning, disposal preparation, and clearance preparation. The Competent Person is not required to be onsite for unrelated routine demolition unless suspect microbial growth is encountered or microbial remediation controls are being implemented.

3. Worker training shall be appropriate to assigned duties and shall address mold/microbial remediation procedures, PPE, respiratory protection where re-quired, hazard communication, containment, safe removal, cleaning, disposal, and emergency procedures.

C. Protection of Adjacent Areas

1. Perform work in a manner to minimize the damage or contamination to areas outside or directly adjacent to the work area, including interior and exterior ar-eas. Inspect areas inside and outside proposed work areas to identify existing damage and notify Government prior to start of work.

2. Where materials outside the work area are damaged or contaminated as a result of the Contractor’s work, as verified by the COR/CMR through visual observation, documentation, or sample analysis where applicable, the Contractor shall restore or decontaminate affected materials at no additional cost to the Government. If adjacent or outside areas become contaminated as a result of the Contractor’s work, the Contractor shall stop remediation work in the affected area, secure the condition, notify the COR/CMR, and take corrective action. Work may proceed in the affected area only after the condition has been corrected and restart is ac-cepted by the Contracting Officer or designee.

1.8 SUBMITTALS

A. Preconstruction Submittals (May be combined)

1. Microbial Remediation Plan / Controlled Demolition Work Plan

2. Competent Person designation, qualifications, and training documentation

3. Qualified remediation contractor qualifications, if applicable

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4. Worker training documentation for personnel performing microbial remediation

5. Equipment data for AFUs, HEPA vacuums, containment materials, dehumidifiers, and other equipment required by the approved plan

6. Targeted destructive assessment documentation, photographs, sketches, and quantity estimates

B. Product Data

1. SDS for chemicals, disinfectants, biocides, sanitizing solutions, and fungicidal agents proposed for use

2. PPE

3. Equipment for pressure differential measurements, dehumidifiers, and AFU

C. Daily Reporting

1. Daily logs, photographs, quantity records, allowance tracking forms, disposal doc-umentation, and clearance/verification documentation

D. Submittals at completion of work

1. Final closeout report for authorized microbial remediation work

PART 2 PRODUCTS

2.1 DISINFECTANTS, BIOCIDES, SANITIZING SOLUTIONS AND FUNGICIDAL AGENTS, (EPA)

A. EPA Registered chemical agents for the use detailed in the Microbial Remediation Plan and used in accordance with the manufacturer's specifications.

B. Submit SDS sheets to the Government for any chemicals used during microbial remedia-tion, disinfection, or other work under this Section for review. Contractor remains respon-sible for safe use, storage, handling, and disposal in accordance with applicable require-ments.

2.2 EQUIPMENT AND HAZARD COMMUNICATION

A. Adhere to all parts of 29 CFR 1926.59

B. Provide containment materials, signage, AFUs, HEPA vacuums, dehumidifiers, PPE, and respiratory equipment proportional to the condition encountered and as outlined in the approved Microbial Remediation Plan / Controlled Demolition Work Plan. Do not deploy

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02 85 00 - 11 microbial remediation controls for standard demolition unless required by the approved work plan, necessitated by conditions encountered at the project site, or authorized by the Contracting Officer or designee.

PART 3 EXECUTION

3.1 PRECONSTRUCTION

A. After award and prior to full interior demolition in designated high-risk areas, the Con-tractor shall review known water-damaged areas and perform a targeted preliminary site inspection/destructive assessment to verify or identify potential microbial hazards likely to be encountered during the work. The assessment shall be limited to areas necessary to inform the Microbial Remediation Plan / Controlled Demolition Work Plan, contain-ment strategy, sequencing, qualified personnel/subcontractor needs, and unit-price quantity tracking. The Competent Person shall be responsible for and present during tar-geted destructive assessment where suspect microbial impacted materials may be dis-turbed

1. Targeted destructive investigation shall focus on water damaged / high risk areas, including skylight-adjacent gypsum wallboard, damaged ceilings and ceiling tiles, waterlogged flooring and sub flooring, deteriorating wall assemblies, crawlspace adjacent areas, mechanical and electrical room leaks, roof and wall transitions, and any other areas identified within project documents or observed by the Con-tractor.

2. Document targeted destructive assessment findings with photographs, location references, affected material type, approximate quantities, and recommenda-tions for controlled demolition sequencing. Incorporate findings into the Micro-bial Remediation Plan / Controlled Demolition Work Plan before full demolition in designated high-risk areas proceeds.

B. The Contractor must prepare the Microbial Remediation Plan / Controlled Demolition Work Plan that details the methods and means that shall be used to complete all work involving microbial hazards on the interior and exterior of the building. The Contractor shall prepare and submit the plans to the Contracting Officer for review, comment, and approval. The Contracting Officer will review the plan and provide any review comments and identify any items considered to be in conflict with, or a change to, the contract in the manner specified for submittals under Division 1 Specification. No microbial remedi-ation at the site, with the exception of site inspections and mobilization, shall be per-formed until the Microbial Remediation Plan / Controlled Demolition Work Plan is ap-proved by the Contracting Officer.

1. The Contractor may proceed with site mobilization, layout, and work in unaf-fected areas while the plan is under review provided such activities do not disturb suspected microbial impacted materials or designated high-risk areas required

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02 85 00 - 12 for controlled demolition procedures. No adjustment will be made for resubmit-tals required as a result of noncompliance.

C. Meet with the COR/CMR prior to beginning controlled demolition or microbial remedia-tion to discuss the Microbial Remediation Plan / Controlled Demolition Work Plan, includ-ing sequencing, documentation requirements, work procedures, safety precautions, quantity tracking, and allowance/CLIN administration. The Contracting Officer will review and accept the plan in accordance with Division 01 submittal procedures. Any variance from the accepted plan or contract requirements that affects cost, time, scope, contain-ment approach, clearance requirements, or remediation limits must be approved in writ-ing by the Contracting Officer prior to implementation.

D. The Microbial Remediation Plan / Controlled Demolition Work Plan must include:

1. Prepared and signed by the Contractor’s Competent Person and qualified reme-diation professional/IH/CIH, as applicable to the work.

2. Shop drawings identifying high-risk water damaged areas, findings from targeted destructive testing, other potentially hazardous material locations, containment areas, and other microbial remediation reports and details

3. Detailed approach to implementing the Controlled Demolition and Escalation Protocol for:

a. suspect mold or microbial growth encountered within areas designated for demolition or material removal; and

b. conditions extending beyond planned demolition/material removal lim-its, affecting building systems or air pathways, involving other hazardous materials, or otherwise requiring Contracting Officer direction

4. Procedures for coordinating observed field conditions with the COR/CMR and no-tifying the Contracting Officer within 24 hours for conditions within designated areas, and immediately for conditions requiring additional Contracting Officer di-rection.

5. CIH, IH, and Competent Person Designation, Experience, and Training Records

6. Worker Training Records

7. Equipment identification

1) Provide manufacturer's certificate of compliance for all equip-ment used to contain the microbial contamination.

2) Respirators

3) Protective Clothing

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4) Warning Signs and Labels

5) Dehumidifiers

6) AFU

7) Vacuum Cleaners Equipped with HEPA Filters

8. Equipment and personnel decontamination procedures

9. Containment Entry / Exit Procedures, including fire protection methods

10. Interior and Exterior Removal Procedures

a. Remediation of microbial contaminated building materials

1) Preparation of project area for remediation

2) Containment set-up, inspection, and monitoring

3) Demolition and removal / cleaning of contaminated materials.

4) Perform final cleaning in the containment

5) Visual clearance/verification procedures performed by the Con-tractor’s qualified remediation personnel, Competent Person, IH, or CIH, as applicable to the work and approved plan. The COR/CMR may observe, document, and verify completion for contract administration purposes.

a) Where AFUs are required by the approved plan, allow the duration recommended by the Contractor’s qualified remediation professional/IH/CIH and accepted by the Contracting Officer or designee for airborne dust to set-tle or be removed before clearance/verification. The du-ration shall be proportional to the condition encoun-tered and containment strategy used.

6) Duct and HVAC cleaning, if necessary.

7) Deconstruction of containment, removal of AFUs.

b. Microbial remediation methods and procedures for the following mate-rials:

1) Non-Porous Materials

2) Unfinished Wood (e.g. wood framing)

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3) Semi-Porous Materials (e.g. concrete, vinyl wall covering, lino-leum, leather furniture, and finished wood products)

4) Porous Materials (e.g. carpet, GWB, ceiling tile)

11. Detailed schedule and sequence of work for microbial remediation under con-tainment

a. Preparation for Remediation Work

b. Demolition

c. Cleaning after Demolition, and Cleaning of Settled Spores from Porous/ Non-Porous Materials

d. Clearance Inspection

12. Clean-up and Disposal

a. Disposal of contaminated waste material

b. Material Packaging

c. Building Exit (Waste Disposal)

3.2 STANDARD DEMOLITION AND CONTROLLED DEMOLITION AND ESCALATION PROTOCOL

A. Perform standard demolition in accordance with project specifications, utilizing standard dust controls and safety protocols.

1. The presence of existing water damage does not re-classify standard demolition as microbial remediation.

2. Work shall proceed in accordance with the approved Microbial Remediation Plan / Controlled Demolition Work Plan and the Controlled Demolition and Escalation Protocol described below.

3. Controlled Demolition / Anticipated Microbial Growth in Demolition Areas:

a. Suspect mold or microbial growth encountered in any area designated for demolition or material removal shall be treated as an anticipated con-dition and managed in accordance with this Section and the approved Microbial Remediation Plan / Controlled Demolition Work Plan. Full pro-ject work stoppage is not required, provided the Contractor implements required containment proportional to the condition encountered, worker protection, documentation, removal/remediation, cleaning, disposal, DENALI NATIONAL PARK AND PRESERVE, ALASKA

02 85 00 - 15 and clearance/verification procedures. Standard demolition and unre-lated work may continue in unaffected areas.

b. The Contractor shall document the condition, including location, affected material type, approximate quantity, photographs, containment measures used, remediation method, disposal records where applicable, and clearance/verification documentation. The Contractor shall coordi-nate field verification with the COR/CMR and notify the Contracting Of-ficer within 24 hours for unit-price CLIN tracking and authorization docu-mentation.

4. Escalation Conditions / Work Beyond Planned Demolition Limits:

a. The Contractor shall stop work only in the affected area, secure and iso-late the condition, implement interim protective measures, and immedi-ately notify the COR/CMR and Contracting Officer when suspect mold or microbial growth:

1) extends into materials or assemblies not designated for demoli-tion or removal;

2) materially exceeds the assumptions in the approved Microbial Remediation Plan / Controlled Demolition Work Plan;

3) affects or may affect HVAC systems, air pathways, mechani-cal/electrical systems, or occupied/unaffected areas;

4) involves or may involve other hazardous materials;

5) cannot be safely managed using the approved containment, worker protection, or remediation procedures; or

6) otherwise requires additional Government direction.

5. Work in the affected area shall not proceed until the condition has been evalu-ated by the Contractor’s qualified remediation professional/IH/CIH, as applicable, and direction is provided by the Contracting Officer or designee. Unrelated work in unaffected areas may continue unless otherwise directed by the Contracting Officer.

B. Quality Assurance/Quality Control Requirements

1. Contractor Qualifications

a. Authorized microbial remediation work shall be performed by qualified remediation personnel or a qualified remediation subcontractor experi-enced in mold/microbial remediation, containment, PPE, respiratory pro-tection, removal, cleaning, disposal, and documentation procedures

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02 85 00 - 16 appropriate for the work being performed. The Contractor shall provide evidence of insurance coverage applicable to microbial remediation where required by the contract or Contracting Officer.

b. The Competent Person must be onsite whenever microbial remediation activities are being performed, including set-up activities.

c. Microbial remediation workers must be given training in PPE and micro-bial remediation activities as required for their particular job. The Micro-bial Remediation Plan / Controlled Demolition Work Plan must provide details of worker training.

2. Post-Remediation Clearance Inspection

a. Clean up all debris and dust in interior spaces outside the work area re-sulting from the Contractor's remediation work.

b. After visible accumulations of material and debris are removed from the containment or affected work area, the Contractor’s qualified remedia-tion personnel, Competent Person, IH, or CIH, as applicable to the ap-proved plan, shall perform visual clearance/verification prior to recon-struction. The Contractor shall notify the COR/CMR and provide docu-mentation of clearance/verification. The COR/CMR may observe or verify completion for contract administration purposes. If visible debris or mi-crobial contamination remains, the Contractor shall re-clean the work area at no additional cost to the Government and repeat clearance/veri-fication until acceptable.

3. Clearance Criteria

a. Clearance will be based on visual assessment (all visible microbial con-taminated material removed and all visible dust removed).

b. Failed remediation areas must be recleaned at no additional cost to the Government, followed by another visual assessment. Subsequent failures must follow the same routine until a pass condition is secured.

3.3 HIDDEN HAZARDS

A. In the event the Contractor identifies an unexpected potential safety or health hazard not addressed by the approved Microbial Remediation Plan / Controlled Demolition Work Plan:

1. The Contractor shall secure the immediate affected area to prevent worker expo-sure or spread of contamination and shall notify the COR/CMR and Contracting Officer immediately.

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2. Mold/microbial remediation within designated demolition areas and within the accepted unit-price CLIN quantities shall be measured and paid under the sepa-rate microbial remediation CLIN items when authorized by the Contracting Of-ficer. Conditions outside designated demolition areas, materially exceeding the approved plan assumptions, affecting HVAC systems or air pathways, involving occupied or unaffected areas, involving other hazardous materials, or exceeding available estimated quantities require Contracting Officer direction before pro-ceeding.

3. Unrelated work in unaffected areas may continue unless otherwise directed by the Contracting Officer.

3.4 INTERIM REPORTS

A. The Contractor shall submit daily quality control forms, logs, photographs, quantity rec-ords, unit-price CLIN tracking forms, disposal documentation, and clearance/verification documentation to the COR/CMR within 24 hours of completing each shift involving con-trolled demolition or microbial remediation. Documentation shall also be provided to the Contracting Officer for authorization, payment, and CLIN reconciliation as required by Section B / Schedule of Items and Section H.

3.5 CLOSEOUT

A. The Contractor shall submit final remediation reports, disposal receipts, final quantity summaries, clearance/verification documentation, and CLIN reconciliation documenta-tion to the COR/CMR and Contracting Officer within 7 days of receiving documentation from the vendor, laboratory, or disposal facility.

3.6 ALLOWANCE, AUTHORIZATION, MEASUREMENT, AND PAYMENT

A. Mold/microbial growth remediation shall be carried under separate unit-priced CLIN items identified in Section B / Schedule of Items. Offerors shall provide unit prices for the estimated quantities identified in the price schedule. The extended CLIN amounts shall be calculated using the accepted unit prices and estimated quantities. The estimated quan-tities are for proposal evaluation and contract administration purposes only and are not lump-sum entitlements.

B. The current intended unit-priced CLIN structure includes:

1. Mold-Impacted Wall/Floor/Ceiling Assembly Remediation – SF – Estimated Quan-tity: 3,800 SF.

a. Includes removal/remediation of affected gypsum board, wall systems, flooring/subfloor materials, ceiling materials, affected insulation where

DENALI NATIONAL PARK AND PRESERVE, ALASKA

02 85 00 - 18 present, cleaning of exposed framing/substrate, bagging, handling, dis-posal, and required documentation.

2. Mold Containment / Mobilization / Clearance Event – EA – Estimated Quantity: 4

EA.

a. Includes one authorized setup of a contained remediation work area, in-cluding containment setup, isolation, negative air/HEPA controls where required, signage, protection, demobilization, and associated visual clearance and/or testing documentation prior to reconstruction. Multiple mold discoveries within the same established containment area and work phase shall be considered part of the same event unless otherwise au-thorized by the Contracting Officer.

C. Payment shall be based only on actual documented and Contracting Officer-authorized quantities/events accepted by the Government. The Contractor shall not invoice against the microbial remediation CLIN items without Contracting Officer authorization and sup-porting documentation, including location, photographs, affected material type, meas-ured quantity, containment/clearance event documentation, disposal records where ap-plicable, and clearance/verification documentation.

D. Multiple mold discoveries within the same established containment area and work phase shall be considered part of the same Mold Containment / Mobilization / Clearance Event unless otherwise authorized by the Contracting Officer.

E. If documented remediation quantities reach approximately 70 percent of the estimated 3,800 SF quantity, or 2,660 SF, or if containment/mobilization/clearance events reach 3 of the estimated 4 events, the Contractor shall notify the COR/CMR and Contracting Of-ficer before proceeding with additional remediation quantities/events beyond the planned remaining balance. The Government will evaluate remaining risk, remaining quantities/events, and whether additional authorization or contract modification is re-quired.

F. Unused estimated quantities/funds remain with the Government and may be reconciled by contract modification.

END OF SECTION