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 DUCTBUSTERS® CLIENT SPECIFICATIONS
 DB696030
 
Mechanical Hygiene Specifications for HVAC and Duct Systems

(c) 1996 DUCTBUSTERS®, Inc. All rights reserved.

Mechanical Hygiene Specifications for HVAC and Duct Systems
Table of Contents
  1. CONTRACT DOCUMENTS
  2. SCOPE OF WORK
  3. STANDARD GENERAL CONDITIONS
  4. PERFORMANCE OF WORK - BASELINE CONDITIONS QCA
  5. CORRECTION OF WORK
  6. QUALITY ASSURANCE/ QUALIFICATIONS OF BIDDER
  7. WORK SCHEDULE
  8. MATERIALS, EQUIPMENT AND PERSONNEL
  9. REQUIREMENTS FOR SPECIFIC MODIFICATIONS OF CLEANING AND DECONTAMINATION OF AIR HANDLERS & ZONE DAMPERS
  10. ROYALTIES AND PATENTS
  11. PROTECTION OF WORK, PROPERTY AND PERSONS
  12. ACCESS TO WORK
  13. CHANGES IN THE WORK
  14. PLAN ERRORS, OMISSIONS, AND SPECIFICATION MODIFICATIONS
  15. CONTRACTOR RESPONSIBILITIES
  16. AIR HANDLERS
  17. DUCTS - ACCESS OPENINGS OPTIONS
  18. MATERIALS, CHEMICALS AND EQUIPMENT
  19. ANTI-MICROBIAL TREATMENT, SANITIZERS & COATINGS
  20. WORKMANSHIP
  21. RESPIRATOR PROTECTION PROGRAM (RPP)
  22. CONTRACTORS RESPONSIBILITIES
  23. IAQ/HVAC REMEDIATION EQUIPMENT
  24. DUCT SYSTEM REMEDIATION
  25. AIR HANDLER REMEDIATION
  26. AIR HANDLER INSULATION
  27. AIRSIDE SURFACE TREATMENT (OPTIONAL)
  28. POST REMEDIATION IAQ TESTING (SEE 3.0)
  29. WARRANTY

Contents

1. CONTRACT DOCUMENTS

  1. The Contract includes the SCOPE OF WORK and the STANDARD GENERAL CONDITIONS of the Contract.
  2. The intent of these documents is to include all labor, materials, equipment and services of every kind necessary for the proper execution of the work and the terms and conditions of payment.
  3. The terms and conditions of this bid will become the terms and conditions of the contract upon acceptance of the bid, and in case of conflicts will take precedence. However, no general specifications herein will be applicable to any contract unless such specifications are specifically identified in the contract.

Contents

2. SCOPE OF WORK

  1. Work required under this section consists of providing all labor, equipment, materials and supervision necessary to perform HVAC remediation, Quality Control Assurance (QCA) protocols designed herein and the techniques specifically required for the removal of agents potentially deleterious to human health, removal of visible surface contaminants and the cleaning of air-side surfaces of all air intakes, air handlers, coils, dampers, terminal units, diffusers and duct systems, as specified herein, including but not limited to, all adjunct components in strict accordance with these specifications.

Contents

3. STANDARD GENERAL CONDITIONS

  1. All decontamination procedures shall be accomplished by an indoor environmental company whose personnel have specialized knowledge and expertise in the methods required for the removal and disposal of visible surface contaminants, agents potentially deleterious to human health, and bulk materials which have been contaminated by such agents.
  2. Organization will have at least one (1) "Certified Air Duct Cleaning Specialist" on staff who has passed the National Air Duct Cleaners Association Certification exam and is verifiable with their current status.
  3. Provide Owner with a proactive IAQ Quality Control Assurance (QCA) program to assure remediation work is performed by a disciplined standard. The Contractor is to provide a designated person who has the training and has been given the responsibility to take necessary measures to assure compliance with OSHA's proposed 1910.1033 Indoor Air Quality Program.
  4. Occupational Health and Safety Administration (OSHA) standards must be complied with. These include, but may not be limited to the Personal Protection Program (PPP), the Respiratory Protection Program (RPP) 1910.134, the Confined Space Program (CSP) 1910.146, and the Hazard Communications Program (HCP) 1910.1200. These programs must be established. The Contractor also shall provide all necessary training and equipment required by the programs for their personnel.
  5. The Contractor shall assure that its employees have received safety equipment training, medical surveillance programs, individual health protection measures, and manufacturer's product and material safety data sheets (MSDS) required for the work described by this Contract Document.
  6. The Contractor shall maintain a copy of all current MSDS documentation and safety certifications at the site at all times, as well as comply with all other site documentation requirements of the OSHA programs and this specification.
  7. All cleaning procedures shall be accomplished by an indoor environmental company with personnel that have specialized knowledge and expertise in the methods required for the removal of such materials.
  8. Occupational Health and Safety Administration (OSHA) general industry standard for respiratory protection 29 CFR 1910.134 requires that a respiratory protection program be established. In order to perform remediation, employee certification and an in-house Respiratory Protection Program (RPP) documentation must be submitted.
  9. The Contractor shall assure that its employees have received the necessary training, medical surveillance programs, safety equipment, individual health protection measures, and manufacturer's product and material safety data sheets required for the work described by this Contract Document 3.10. The term "antimicrobial coating product" used in the following specifications refers to an antimicrobial formulation developed, tested and registered for HVAC ductwork and air handler applications. The antimicrobial coating product shall be an EPA registered, non-toxic, water soluble solution with supporting efficacy and MSDS data. Application of the antimicrobial coating products shall be in accordance with manufacturer's minimum millage surface application rate standards for effectiveness.
  10. List of personnel and their experience and projects performed.
  11. Bids shall be considered only from firms which are regularly engaged in the environmental business with emphasis on HVAC decontamination and/or ductwork remediation.

Contents

4. PERFORMANCE OF WORK - BASELINE CONDITIONS QCA

  1. Pre and Post-remediation IAQ QCA
  2. QCA shall be limited to the areas specified herein, and the specific zone/air handling system to be remediated. No other areas shall be monitored or other tests conducted without the authorization of the Owner.
  3. Personnel performing bulk (surface) QCA must be trained in IAQ. All cultures shall be quantified and qualified for microbial content in a laboratory with a minimum staff of a Ph.D. in Mycology/Microbiology Laboratory .
  4. QCA of the existing HVAC parameters shall be done in each zone/air handling unit system area prior to any remediation work in that area.

Testing shall include: (minimum):

Test protocol Indoor (Before)
(Occupied Space)
Indoor (After)
(Occupied Space)
Outdoor Sample
Temperatures Drybulb (Pre/Post Coil)  X X X
Temperatures Wetbulb X X X
Relative Humidity (Pre/Post Coil) X X X
Bulk Sample Microbial Analysis X X -
NADCA Vacuum Test ( Nuisance Dust Protocol) X X -
Videographic Imaging and Still Photos X X -
Air Flow Differential Manometer X X -
  1. Contractor must be capable of conducting IAQ/HVAC video imaging and still photos to be provided both before and after mechanical remediation. Both the 'before' video tape and still photos shall be available to the Owner before remediation. IAQ/HVAC imaging is to be completed utilizing VHS video capabilities before and after remediation. Optionally, a narrated and edited tape will be provided to the Owner.
  2. Microbiological bulk sampling, when performed, shall follow nationally recognized chain of custody protocols for data gathering. Culture shall be performed to identify bacteria and fungi on appropriate media.
  3. Cultures are to be characterized to quantify and qualify microbial content. Microbiological evaluations shall include fungal and bacterial cultures.
  4. Initial air flow and differential pressure readings are to be performed by the Contractor using manometer equipment. Pressure differentials shall be measured across each coil, with filtration in place.
  5. Verification of Air Conveyance Systems (ACS) decontamination will be determined by the NADCA vacuum test. The weight of the debris collected by the nuisance duct protocol shall not exceed 1.0mg/100 cm².
  6. Provide Owner with QCA Report, including: VHS video, photographs and report of degraded areas of HVAC system, Microbial results, and air flow and pressure differential results.
  7. All QCA requirements and procedures shall be completed for post-remediation quality analysis in accordance with the post remediation table provided in this document.
  8. In addition, the following will be required to complete the post-remediation QCA:
    1. Provide Owner with a QCA Report including: Remediation Progress Report summary, a compilation of daily progress reports of work performed, all correspondence during remediation of work performed, HVAC parameter study, bulk analysis, IAQ/HVAC video imaging, differential pressure readings, NADCA vacuum test results, wet and dry thickness (millage) analysis of antimicrobial coating applications, and documentation of any deficiencies.
    2. Provide Owner with records of compliance after the completion of the remediation project. This QCA analysis is to be provided to the Owner for verification of the Contractors ability to meet performance criteria as defined by sections 6.1 to 6.3.1 of NADCA standard 1992-01 or current version.

Contents

5. CORRECTION OF WORK

  1. The Contractor shall re-execute any work that fails to conform to or meet requirements of the Contract, and which appears during the progress of the project, and shall remedy any defects due to faulty materials or workmanship which appear within a period of one year from the date of final acceptance of the work by the Owner. The provisions of this article apply to work completed by subcontractors as well as to work completed by employees of the Contractor.

Contents

6. QUALITY ASSURANCE/ QUALIFICATIONS OF BIDDER

  1. NADCA Standard 1992-01 must be followed with no modifications or deviations being allowed to provide the maximum safety for the occupants in the building.
  2. The Contractor selected should have at a minimum three years membership with the National Air Duct Cleaners Association (NADCA) and be able to verify three cleaning projects in which the NADCA standards have been used.
  3. All cleaning procedures shall be accomplished by an indoor environmental company with personnel specializing in HVAC systems. Contractor shall have knowledge and expertise in the methods required for the removal of microbiological contaminants from within an HVAC system. Qualified Contractor shall be capable of performing mechanical, electrical, plumbing and control work as necessary to accomplish this scope of work. Contractor is required to be state licensed.
  4. Contractor stipulates that their work performance has been in accordance with specifications and general techniques in regard to HEPA vacuums and the application of antimicrobial products to duct systems.
  5. Contractor must have a minimum of five years experience in commercial ductwork decontamination. Additionally, the Contractor must have experience with air sampling techniques as outlined in this Scope of Work on a minimum facility of 75,000 square feet. This project must have been cleaned with a 4,000 to 6,000 + CFM HEPA vacuum and an application of an antimicrobial coating product to the duct system.
  6. List and give a brief description of similar work completed with locations, names, phone numbers and address of each.
  7. Bids shall be considered only from firms which are regularly engaged in HVAC maintenance and in the environmental business with emphasis on air duct decontamination.

Contents

7. WORK SCHEDULE

  1. Unless otherwise specified, this job is specified for 1st or 2nd shift work.
  2. All office equipment and furniture shall be covered and protected from any dust or debris in each work area.
  3. All systems shall be back on line and operating at full capacity, and all areas will be ready for occupancy no later than the time agreed upon with the facilities manager.
  4. Schedules and progress reports shall be faxed or delivered on a daily basis.

Contents

8. MATERIALS, EQUIPMENT AND PERSONNEL

  1. Except as otherwise noted, the Contractor shall provide and pay for all materials, labor, tools, and equipment necessary to complete the work.
  2. The Contractor shall furnish, for approval, all samples as directed. The work shall be in accordance with approved industry sampling protocols.
  3. All material shall be new, and both workmanship and materials shall be of a high standard of quality, approved by the Owner's Representative.
  4. All workmen and subcontractors shall be skilled in their trades.

Contents

9. REQUIREMENTS FOR SPECIFIC MODIFICATIONS OF CLEANING AND DECONTAMINATION OF AIR HANDLERS & ZONE DAMPERS

  1. The Contractor shall clean all types of air conveyance systems (i.e., sheet metal ducts, masonry, etc.) so that mold, mildew, lint, hair, fungi, dirt and other foreign materials and residues are properly removed.
  2. The cleaning procedures shall be accomplished by the utilization of specialized equipment as required (i.e., high suction vacuums utilizing HEPA filters, high pressure washers, air compressors, duct brushes, etc.). (SEE EQUIPMENT SPECIFICATIONS)
  3. Special attention shall be taken during cleaning to prevent high levels of micro-organisms from becoming airborne and then disseminated into occupied areas. All effluents shall be removed and disposed of by the Contractor. Cleaning shall be in accordance with NADCA Standard 1992-01.
  4. Contractor shall, during decontamination, maintain certified respirators, safety glasses and clothing according to OSHA respiratory protection standard 29-CFR-1910.134.

Contents

10. ROYALTIES AND PATENTS

  1. The Contractor shall pay all royalties and patent fees for any material or processes which require the use of proprietary patented systems and/or methods. The Contractor also agrees to hold the Owner harmless of all such claims if such issues of intellectual property arise.

Contents

11. PROTECTION OF WORK, PROPERTY AND PERSONS

  1. The Contractor shall adequately protect the Owner's property and occupants. The Contractor shall be responsible for the cost arising out of any damage or injury due to his act or neglect.

Contents

12. ACCESS TO WORK

  1. The Contractor shall permit and facilitate observation of the work by the Owner and his agents and public authorities at all times.

Contents

13. CHANGES IN THE WORK

  1. The Owner may order changes in the work, the Contract Sum being adjusted accordingly. All such orders and adjustments shall be in writing. Claims by the Contractor for extra cost must be supported by accurate cost breakdowns, and must be approved by the Owner before executing the IAQ work involved.
  2. Any changes to the original work order contract will be executed as agreed upon utilizing labor and material rates. These IAQ remediation personnel rates will apply to any changes to the scope of the work order.
  3. Provide all receipts to the Owner and Architects for change orders, as requested.

Contents

14. PLAN ERRORS, OMISSIONS, AND SPECIFICATION MODIFICATIONS

  1. Claims of Plan and/or Specification errors by the Contractor for extra cost must be supported by subject documents in error, field inspection and accurate breakdowns, and approved by the Owner before Contractor will continue with the contract work. Consequently, the Owner may order changes in the work, the Contract Sum being adjusted accordingly. All such orders and adjustments shall be in writing. All procedures from this point shall be handled as normal change orders.

Contents

15. CONTRACTOR RESPONSIBILITIES

  1. CONTRACTOR IS NOT RESPONSIBLE FOR PROBLEMS RESULTING FROM PRIOR INAPPROPRIATE OR CARELESS CLEANING TECHNIQUES OF OTHERS
  2. Insure that any air conveyance systems' interior acoustical lining materials receive careful attention to prevent damage to airside surfaces. Any acoustical or insulating liner, interior or exterior that is cut, tooled or damaged during any procedures shall be repaired in accordance with industry specifications.
  3. Reports will be made of all motor damage, deteriorating ductwork and insulation to the Owner for inspection and decision as to remedies needed. Most repairs shall be made upon discovery to maintain progress.

Contents

16. AIR HANDLERS

  1. The Contractor shall insure that the supply and return fans/blowers relating to these air handler zones of influence are thoroughly cleaned. Areas to be cleaned shall include blowers, fan housing, blades, vanes, shafts, baffles, and drive assemblies. All mechanical or machined components shall be maintained for corrosion by removing loose rust and scale. Protection of all HVAC parts and material shall be considered prior to applying any coating or treatment. All vanes, shafts, baffles, drive assemblies or any other moveable parts within the air handler shall be properly lubricated prior to closing and completing.
  2. All visual surface contamination deposits shall be removed according to NADCA Standard 1992-01.
  3. All items within the air handler units that are sensitive to, or could be damaged by the cleaning process, shall be properly protected during the work.
  4. Contractor shall be equipped and staffed with qualified personnel capable of removing electric heat strips, and any mechanical or plumbing components required to access coils.
  5. Coil access is made by removing panels of the HVAC system, opening existing duct accesses, creating new duct accesses, installing doors in the HVAC system panels or complete removal of the cooling coils. All coil accesses shall be installed before and after each coil where applicable (SMACNA specification). These are intended for future maintenance accesses and shall be as specified.
  6. Non toxic, non acid based coil cleaner will also be utilized as a cleaning method for coils.
  7. The Contractor shall remove contaminants from all cooling coils. Coils shall be thoroughly cleaned on both exterior surfaces and in the interior coil bank, all non- impacted contaminants shall be removed so the air flow and heat transfer is not inhibited. Back-to-back coils must be removed to accomplish cleaning of exterior surfaces. No damage to the coil or fans shall be incurred. Coils shall be thoroughly rinsed with clean water to remove any latent residues. Coils shall be covered and protected to prevent heat transfer reduction created by overspray of any coatings.

Contents

17. DUCTS - ACCESS OPENINGS OPTIONS

  1. The Contractor shall provide and install access openings in the ducts and air handlers as required for proper cleaning at various points of the duct system for physical and mechanical entry. The openings shall be provided at various points and adjacent to the in-line components (i.e. turning vanes, dampers, etc.) that tend to entrap contaminants.
  2. When already installed in the HVAC system, the Contractor shall utilize the existing access openings for remediation where possible.
  3. The opening shall be furnished and installed by the Contractor.
  4. Sheet Metal Plate Option:
  • Access openings shall be resealed with matching gauge galvanized plates with outside frame sealed and screwed to the ductwork. Patches will have an application of mastic by an approved UL listed product and shall be used in accordance with SMACNA standards.
  1. Sheet Metal Door Option:
  • The door shall be eighteen (18) gauge metal with 1/2-inch insulation on the inside. Door edges shall be twice turned in 1/2-inch over the insulation. They will have a hand-type latch designed to tightly secure them and prevent air leakage yet permit re-access at future times. Doors shall be marked for easy identification.
  1. Rigid Fiberglass Ductboard Panel Option:
  • Rigid fiberglass ductboard duct systems shall be resealed in accordance with NAIMA specification. Only closure techniques which comply with UL181 or UL181a are suitable for fibrous glass duct system closures. Openings will be created using either a ship lap tool or the 45° angle protocol.
  • The Contractor shall insure that all motorized and manually operated dampers and splitter-damper positions are marked to identify the original position before commencing work to assure they are returned to the original setting after completion of the cleaning process.
  • All dampers needing repair or replacement shall be brought to the attention of the Owner.

Contents

18. MATERIALS, CHEMICALS AND EQUIPMENT

  1. The Contractor shall use materials, chemicals and equipment which are specified herein and pre-approved by the Owner or his representative. All sanitizers and disinfecting agents or products with an antimicrobial effect must be EPA registered for the specific application and usage.

Contents

19. ANTI-MICROBIAL TREATMENT, SANITIZERS & COATINGS

  1. Contractors must have verification of similar projects for applying a short term residual antimicrobial solution intended for use in HVAC systems when directed and specified by consulting building hygienists (Oxine is a registered product for this purpose).
  2. Surfaces shall have been cleaned using source removal processes prior to use of any chemical sanitizer and/or coating application. Coating will be a long term residual EPA registered product designed for HVAC systems.
  3. Sanitizers, when used, shall be applied per manufacturer's instructions, and will be used prior to coating application. System shall be thoroughly dried out after application of sanitizers.
  4. HVAC anti-microbial coating shall be applied according to manufacturers instructions. Coating shall be sprayed directly onto interior ductwork surface, rather than "fogged" downstream onto surfaces. A continuous film must be achieved by the coating application. Application thickness shall meet the manufacturer's recommendations.
  5. Spray fumes shall be controlled by negative air equipment and proper filtration during application, exhausting volatiles to the outside. Negative pressure should be maintained for at least a two-hour period after coating application to remove volatiles from the system. Maximum outside air must be brought in through the system for at least 48 hours after application of coating.

Note: The porosity of the surface will determine the square feet per gallon coverage, which will be at a spread of 200 square feet per gallon to 400 square feet per gallon.

Contents

20. WORKMANSHIP

  1. The Contractor shall use materials, chemicals and equipment which are in their original containers. No open or used containers will be allowed.
  2. The cleaning process and deposit removal shall be accomplished by personnel skilled and trained in the specific discipline. The access, preparation and dismantling of equipment for such work shall be performed by qualified HVAC personnel.
  3. The Contractor shall exercise special care to prevent any damage to the equipment, electrical motors of systems, ceiling tiles and to the building from water and/or chemicals resulting from the cleaning process. All interior equipment, furniture, files and material shall be adequately covered and protected as necessary to prevent damage. Any damaged fixtures, equipment or systems shall be repaired, if possible, or replaced with equal equipment at no cost to the Owner.

Contents

21. RESPIRATOR PROTECTION PROGRAM (RPP)

  1. Occupational Health and Safety Administration (OSHA) general industry standard for respiratory protection 219 CFR 1910.134 requires that a respirator protection program be established. In order to perform remediation work, an OSHA Respiratory Protection Program (RPP) Certificate of Completion by each remediation employee and an in-house RPP must be submitted.

Contents

22. CONTRACTORS RESPONSIBILITIES

THE CONTRACTOR SHALL:

  1. Be responsible for unclogging HVAC components of the herein contracted air conveyance system including; coils, supply registers, dampers, turning vanes, etc., fouled by dust and other contaminants.
  2. Report all damaged or deteriorating ductwork and/or air handler insulation to the Owner for his inspection and decision as to remediation.
  3. Authorized unsupervised nights. A "Progress Report" is to be faxed or delivered to the Owner within 12 hours of work completion.

Contents

23. IAQ/HVAC REMEDIATION EQUIPMENT

  1. Minimum equipment requirements are as follows:
  2. Indoor portable, HEPA filtered negative vacuum system at 4,000 to 6,000 CFM. HEPA filtered vacuum shall be fitted with minihelic gauges reading in "inches of water gauge" to insure proper negative pressure is maintained, thus preventing escape of debris removed during the cleaning process into the inhabited area.
  3. All negative vacuums shall be HEPA filtered and shall meet with all NADCA Standard 1992-01 equipment requirements
  4. Efficiency of HEPA vac filtration to be a minimum of 99.97% at .3 microns.
  5. Duct brushes to vary in size from 3" to 18" and designed of light nylon bristles.
  6. Portable air compressor rated at 150 to 200 PSI and 15 to 17 CFM.
  7. Pressure washer rated at 800-1500 psi.

Contents

24. DUCT SYSTEM REMEDIATION

  1. The Contractor shall clean all components of air conveyance system (i.e. sheet metal ducts, rigid fiberglass ductboard, flex duct, masonry, etc.). Cleaning will properly remove lint, hair, fungi, dirt and other foreign materials and residues.
  2. The cleaning procedures shall be accompanied by the use of specialized equipment, i.e., high efficiency vacuum system utilizing HEPA filters, high pressure washers, duct brushes etc., as required.
  3. Special attention shall be taken while cleaning to prevent high levels of microbial contaminants from becoming airborne and disseminated into occupied areas. All effluent shall be removed and disposed of by the Contractor.
  4. The Contractor shall, during decontamination, maintain certified respirators, safety glasses and clothing according to the OSHA respiratory protection standard 29-CFR-1910.134.
  5. The Contractor shall be responsible for unclogging and thoroughly cleaning HVAC duct system components including reheat coils, supply registers, dampers, VAV boxes, turning vanes, etc., fouled by dust and other contaminants.
  6. The Contractor shall insure that all damper and splitter-dampers are marked to identify the original position before commencing work. All components will be returned to their original setting upon completion of the cleaning process.
  7. Manually operated dampers shall be firmly reset in their original position after cleaning.
  8. Dampers requiring repair or replacement shall be brought to the Owner's attention.
  • DAMPER REPAIR OR REPLACEMENT IS NOT PART OF THIS CONTRACT, BUT IS AVAILABLE AS AN OPTION.
  1. Return air ducts are to be cleaned and decontaminated if ducted returns are used in the subject HVAC systems. Open plenums above ceilings and utility chases used for return air purposes shall not be cleaned unless requested and handled as an additional work order.
  2. The Contractor shall wash all terminals, grills and diffusers with a non-toxic, disinfecting solution.
  3. When requested or specified, Contractor must be capable, prior to reinstalling terminals, to treat with a long-term antimicrobial product.

Contents

25. AIR HANDLER REMEDIATION

  1. The Contractor shall insure the supply and return fans or blowers relating to air handler zones of influence are thoroughly cleaned. Areas cleaned shall include blowers, fan housings, blades, vanes, shaft, baffles, and drive assemblies.
  2. Any surface with contamination deposits shall be removed in the manner previously outlined.
  3. Any components or items within the air handler units that could possibly be subject to damage by the cleaning process shall be properly protected during the cleaning process, as applicable.
  4. When requested or specified Contractor must be capable of coating the interior insulation, frame-work and metal surfaces, (excluding heat transfer components), with a long term antimicrobial coating product.
  5. The Contractor shall remove contamination from all cooling coils. Coils shall be thoroughly cleaned on all exterior surfaces, i.e., both upstream and downstream. In the interior coil bank, all non-permanent impacted contamination shall be removed in the interior coil bank permitting air flow and heat transfer. Coils shall be thoroughly rinsed to remove latent residues.
  6. Coils may be cleaned with non-toxic, non-acid cleaner if properly rinsed and flushed after cleaning.

Contents

26. AIR HANDLER INSULATION

When requested or specified Contractor must be capable of remediating exposed degraded insulation in air handlers and/or ductwork requiring replacement. REPLACEMENT OF DEGRADED INSULATION IS NOT COVERED BY THIS CONTRACT, BUT IS AVAILABLE AS AN OPTION.

Contents

27. AIRSIDE SURFACE TREATMENT (OPTIONAL)

  1.  *AIR HANDLER(S)
  2.  *DUCT SYSTEM(S)
  3. If indicated in the detailed bid specifications, once modifications and cleaning have been accomplished, the Contractor shall apply an EPA registered antimicrobial application designed specifically for HVAC ducts to all airside surfaces of the air conveyance systems(s) selected above.
  4. The antimicrobial product shall be sprayed directly onto the airside surface of the ductwork system. It shall not be sprayed from a distance of more than 30". Fumes resulting from the antimicrobial treatment shall be contained within the enclosed

Contents

28. POST REMEDIATION IAQ TESTING (SEE 3.0)

  1. Bioaerosol surface sampling to be performed by trained personnel. Cultures shall be quantified to identify bacteria and fungi.
  2. Cultures of surface testing to be characterized by a Microbiologist to quantify and qualify microbial content. Microbial evaluations will include bacterial and fungal protocols.
  3. An Indoor Environmental Report is to be provided with documentation to include a report of the HVAC systems which relates to air handlers and ductwork. This shall include air flow measurements before and after remediation, and documentation of any deficiencies.
  4. Final air flow and differential pressure readings are to be performed by the Contractor using manometer equipment.

Contents

29. WARRANTY

  1. Contractor is to issue warranty on workmanship and material for a period of one year from completion of work.

("*" - Optional)

(c) 1996 DUCTBUSTERS, Inc. All rights reserved.

 

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