Attachment 4 - MAHG261152 Mold Sanitization - Questions and Answers.pdf

Q# Question Response

1 What are the square footages for these affected rooms in these buildings? See attached revised drawings.

One question we already have concerns the air stream cleaning. I'm not sure about Dolan Hall, but Lott Hall and Jones Hall have an open air return plenum that utilizes the space above the ceiling tiles as the return ductwork, which is a large area. If mold is found in one part of the open-air return, should we consider the entire airstream contaminated, as mold spores may be present but not visible? No. Exterior cleaning of the visible parts of the system are required.

Were there any tests completed prior to this posting on any of the areas mentioned? This will also help clarify the state of any excluded areas in the serviced buildings. No testing was done.

Would the Government extend the quote deadline to Wednesday, September 2, 2026 at 12:00 p.m. CDT? Proposal deadline is extended to 1 September 2026 at 8:00am CDT.

Please provide a marked drawing or crosswalk connecting each PWS room and stairwell to its drawing identifier, floor, square footage, ceiling type and height, and available above-grid clearance. Our reading identifies 97 unique rooms and nine stairwells because Building 2603 Room 40 appears twice.

Please confirm the intended count and identify any common areas included beyond the nine stairwells. See attached revised drawings.

Please provide any available condition assessment, mold testing, moisture readings, facility reports, or current photographs. Please identify known visible growth by room, surface, and approximate extent; affected ceiling-tile quantities; known above-grid or HVAC involvement; and whether the moisture sources have been corrected and the spaces are dry. No testing was done.

Can you provide photos of the affected rooms?

Contractors had opportunity to take photos during site visit. No other photos provided.

Please confirm that the required work is cleaning and sanitization plus removal and disposal of affected or damaged ceiling tiles. Please confirm that replacement ceiling tiles, drywall or insulation removal, flooring replacement, painting, reconstruction, and moisture-source repair are not included unless specifically identified. If any such work is included, please provide the locations and quantities.

Requirement is surface cleaning only. Replacement of ceiling tiles is NTE 20% of building total.

Please provide available asbestos, lead, or other hazardous-material survey information applicable to ceiling tiles, adhesives, coatings, insulation, and above-grid materials that may be disturbed. If no survey is available, please identify which party would be responsible for testing before disturbance. Requirement is surface cleaning only. Wall panel removal is not required.

Attachment 4

FA301026Q0035

Please identify any rooms where containment, negative pressure or air scrubbers, ULV treatment, HVAC cleaning, or above-grid treatment are known to be required. If those locations are not known before award, please confirm how offerors should include conditional work in the one-lot firm-fixed price. Please also confirm whether HVAC cleaning is limited to accessible grilles, registers, and exposed surfaces or includes internal ductwork, branch lines, air-handling equipment, or other mechanical components.

Exact locations are not known for containment, ULV, HVAC, above ceiling treatment. These treatments NTE 1 space per building. Requirement is surface cleaning only for HVAC components.

Please provide available information on flooring and ceiling types, furniture and equipment density, and secure or sensitive spaces. Please identify the Government's and contractor's respective responsibilities for de-energizing, disconnecting, moving, protecting, cleaning, replacing, reconnecting, and function-testing furniture, electronics, and other contents.

Contractor can plan for hard surfaces, cloth, carpet, normal office building materials. Contractor shall reconnect any equipment they disconnect prior to cleaning.

Please identify which target rooms will remain occupied or operational, which spaces the Government will vacate and continuously release, any required work sequence or limit on simultaneous room closures, and any escort or secure-area restrictions. The technical submission requires a phasing schedule, but the solicitation does not provide a Government phasing plan. All logisitics must be coordinated with Facility Manager at each building.

Please confirm the availability of ordinary electrical power and water, staging and loading areas, elevator access where applicable, and permission to leave secured equipment onsite overnight.

Power is available in all facilities within 50'. Materials and equipment may be stored onsite after duty hours. Coordinate with Facility Manager for locations.

Please confirm whether the PWS joint visual and physical inspection is the sole clearance method and whether air sampling, surface sampling, laboratory analysis, third-party industrial-hygienist clearance, or a contractor-issued certification is required. Please provide the QASP if available and identify required closeout records such as room-level signoffs, before-and-after photographs, daily reports, product records, and disposal receipts.

Government will conduct visual inspection of areas. Sampling and testing is not required.

Section L directs offerors to complete and sign an SF1442, but the package contains an SF1449 and no SF1442. Please confirm that offerors should complete and sign the included SF1449. Please sign and submit the SF1449.

What defines an affected ceiling tile that needs to be discarded? Can a percentage contingency be submitted within the proposal for ceiling tile replacement since we will not know the integrity of each tile that faces the deck.

Recommend 25% contingency for ceiling tile replacement in each building. Anything beyond would need a change order.

Visibly contaminated ceiling tiles shall be replaced. Replacement of ceiling tiles is NTE 20% of building total.

Will there be any storage nearby to store unaffected ceiling tiles while the grid is cleaned or are they expected to stay withing the affected room/corridor?

Storage space will be identified within each facility with coordination of the respective Facility Manager.

Is there any insulation above the grid in any affected areas? No insulation is identified or required to be cleaned.

19 Please confirm ceiling light fixtures and lens are not to be removed and/or cleaned. Light fixtures and lenses are not required to be cleaned.

Will cubicles be removed from rooms by base personnel?

Cubicles will not be removed. Contractor shall clean around cubibles as needed.

21 Will staff personal possessions and wall hanging be removed prior to crews cleaning? Yes. Occupants will be responsible for removing/replacing personal items.

Can a corridor be closed off with containment from start to finish or should crews plan on erecting containments down the center of the corridor? If the center is preferred this may cause problems with visual final inspections.

Coordination with Facility Managers to close off corridors. Contractor shall plan for maintaining occupant access to rooms not being cleaned in affected hallways.

23 Is the reported 9’ space between floors 1 & 2 in Trent Lott Building part of the cleaning scope? No. Cleaning interstitial spaces is not part of the requirement.

24 Please confirm interior duct work cleaning is not part of the cleaning. Confirmed. Interior duct cleaning is not required.

Please confirm whether the Contractor should include cleaning of all contents located within the designated contaminated areas, including furniture, equipment, fixtures, and other contents, utilizing HEPA vacuuming and damp/wet wiping where applicable. If only certain contents are to be cleaned, please identify the categories of contents that should be included or excluded from the Contractor's pricing.

Contractor shall include all existing furniture, equipment and fixtures in the cleaning. Personal items are not part of the requirement.

Please clarify the required scope of HVAC cleaning. Is the Contractor expected to perform complete interior cleaning of the HVAC ductwork, or is the required scope limited to accessible registers, supply vents, return vents/grilles, and similar components? If interior duct cleaning is required, please identify the extent of ductwork to be cleaned. Requirement is surface cleaning only for HVAC componenets.

Please confirm whether the Contractor should include HEPA vacuuming, followed by damp/wet wiping, of all accessible surfaces and structural components within each designated contaminated area, including walls, ceilings, floors, doors, trim, fixtures, and other exposed building components. Confirmed. Contractor shall vacuum and wipe all cleaned areas.

Room 113 in Jones Hall appears to require removal/demolition of the lower wood-paneled wall system to properly address the affected area. Please confirm whether removal of this wall system is acceptable. If demolition is acceptable, please clarify whether the Contractor is responsible for reconstruction/replacement of the removed materials, or whether the Contractor's responsibility ends following demolition, cleaning, and sanitization of the exposed area. Wood panels are not required to be removed.

Please confirm that the intent of this contract is to perform the cleaning and sanitization activities specifically identified in the PWS, rather than to correct the underlying moisture conditions or other building deficiencies that may be contributing to mold growth. Additionally, please confirm that the correction of moisture intrusion, humidity conditions, HVAC deficiencies, building-envelope deficiencies, or other underlying causes of mold growth is outside the Contractor's scope.

Confirmed. The requirement is for surface cleaning only. Contractor is not responsible for repairs to mechanical systems.

Please clarify the Contractor's responsibility regarding recurrence of mold following completion and Government acceptance of the contracted work. Specifically, if the Contractor completes the required cleaning/sanitization in accordance with the PWS and the work is accepted by the Government, will the Contractor have any responsibility for subsequent mold growth resulting from moisture intrusion, elevated humidity, HVAC conditions, building-envelope deficiencies, or other conditions outside the Contractor's scope of work and control?

Contractor shall be cleared of any further responsibility after the cleaned areas have been accepted by the government.

Please clarify the required treatment of plenum and above-ceiling spaces within the designated contaminated areas.

Should the Contractor include HEPA vacuuming and damp/wet wiping components above the ceiling grid, including the underside of the deck/ceiling, walls, structural framing/beams, piping, conduit, mechanical components, ductwork exteriors, cable trays, and other accessible surfaces? Or is the Government's intended scope for these areas limited to ULV fogging/application of the specified antimicrobial product? If a combination of physical cleaning and ULV application is required, please identify which above grid surfaces/components require HEPA vacuuming and damp wiping.

Exact locations are not known for containment, ULV, HVAC, above ceiling treatment. These treatments NTE 1 space per building. Requirement is surface cleaning only for HVAC componenets.

Please confirm whether the Contractor should include cleaning of all carpeting located within each designated contaminated area. If so, please clarify the required cleaning method, whether hot-water extraction, low-moisture cleaning, antimicrobial treatment, or another specified method is required. Contractor shall determine most effective cleaning method.

Please clarify the required scope of work for Room 26 in Trent Lott Hall. Should the Contractor include HEPA vacuuming and damp/wet wiping of all accessible structural and building components within the room? Additionally, please confirm whether the large flight simulator and its associated components are included in the Contractor's cleaning scope.

Contractor shall clean building surfaces only. The flight simulator is not part of the requirement.

Will the Government designate an authorized Point of Contact (POC) who can make or approve determinations regarding contents that are considered non-salvageable or unsuitable for cleaning, including upholstered furniture, heavily contaminated porous materials, paper products, documents, and similar items?

Each facility will have a POC to consider these concerns. Contractor shall coordinate with Facility Managers.

Several designated areas appear to require removal or relocation of office cubicles, desks, furniture, and/or equipment to provide access to contaminated surfaces. Please confirm whether the Contractor is responsible for disassembly, relocation, and subsequent reinstallation/reassembly of these items following completion of cleaning and Government inspection/acceptance of the area. If reinstallation is required, please confirm that the Contractor is not responsible for reconnecting electrical, data, communications, or other systems associated with the cubicles/workstations.

Cubicles will not be removed. Contractor shall clean around cubicles as needed.

Please confirm whether the Contractor's cleaning responsibilities are limited to the specific rooms/areas identified in the PWS, or whether the Contractor should also include adjacent/common areas such as hallways, corridors, lobbies, restrooms, and other shared spaces. If common areas are included, please identify the applicable areas so that all offerors can price the same scope. Cleaning shall only be accomplished within rooms/spaces identified in PWS.

Please identify the specific criteria the Government will use to determine satisfactory completion and acceptance of each cleaned area. For example, will acceptance be based upon visual inspection and confirmation that the PWS cleaning procedures have been completed, or will additional objective criteria, sampling, testing, or documentation be required?

Government will conduct visual inspection of areas. Sampling and testing is not required.

What is the square footage to be cleaned in each building? Refer to attached revised drawings.

Are the ceiling tiles to be cleaned and reused or replaced? If they are to be replaced, is there a percentage cut off for each building?

Visibly contaminated ceiling tiles shall be replaced. Replacement of ceiling tiles is NTE 20% of building total.

Regarding the attic space, must the contractor wipe down the entire area, including loose communication wiring, conduit, and supply ductwork? Attic spaces are not required to be cleaned.

41 Should the buildings be completed sequentially or simultaneously?

Contractor shall determine most effective cleaning method. Buildings can be cleaned concurrently or consecutively.

42 Are the air handlers and supply duct work to be cleaned and disinfected for this project? Requirement is surface cleaning only for HVAC componenets.

43 Can you provide specs and plans for the buildings? Specifically HVAC/plumbing related if possible? Refer to attached revised drawings.

Are all 3 building personnel capable and willing to move government owned equipment out the way for us to clean?

Contractor shall include all existing furniture, equipment and fixtures in the cleaning. Personal items are not part of the requirement.

Per the site visit, there is the understanding that mold may return after some time due to no remediation and current system defaults. Can you specify the level of sanitation needed for these buildings?

Contractor shall be cleared of any further responsibility after the cleaned areas have been accepted by the government.

46 Can you provide the original pictures of the mold before the building owners launched a mass clean recently? No pictures available.

Can proposals be evaluated on a best value basis versus LPTA to ensure the government’s needs are met by the contractor’s technical assessment of the issues to be remedied? This will allow all members of the government team to assess that each building owner’s requirements are being met.

A technical evaluation will be conducted on the lowest priced quote. If it is determined unacceptable, we will evaluate the next lowest price and so on.

48 Can you provide the most recent completed indoor air quality mold testing or sampling for mold spores for these buildings? No testing was done.

For Trent Lott Hall, Building 2603, Room 26, please confirm whether the required sanitization includes the complete ceiling, upper walls, structural members, utilities, ducts, piping, and other overhead surfaces at heights exceeding 90 feet. Please also confirm whether the Government will furnish an approved lift or elevated-access system, or whether the contractor must provide all high-reach access equipment.

Contractor shall clean building surfaces only. Goverment does not have a lift to provide for contractor use.The flight simulator is not part of the requirement.

50 Please confirm whether acceptance will be based solely on the PWS visual, odor, cleanliness, and dryness requirements, or whether the contractor must provide post-sanitization mold air sampling, laboratory testing, or third-party clearance.

Government will conduct visual inspection of areas. Sampling and testing is not required.

51 If testing is required, please provide the sampling protocol, passing thresholds, number and location of samples, approved laboratory requirements, and responsibility for testing costs

Government will conduct visual inspection of areas. Sampling and testing is not required.

If there’s no magnitude, is there a Not to Exceed amount?

Government will conduct visual inspection of areas. Sampling and testing is not required.

53 If you can’t publicly post the pictures due to sensitivity of government equipment, can you make it a controlled document for us to request access to on Sam.gov? No pictures available.

54 Removal of wall paneling in first building. Are we expected to remove and replace materials? Wood panels are not required to be removed.

55 If hidden mold damages are found, how is that handled? If the problem is large behind walls.

Requirement is surface cleaning only. Wall panel removal is not required.

Contractor shall submit RFI for found areas.

56 Will any post-clearance air quality studies be required before breaking down containment?

Government will conduct visual inspection of areas. Sampling and testing is not required.

57 Regarding access to each building, are there any restrictions other than the simulator room and supporting areas at Lott Hall? All logisitics must be coordinated with Facility Manager at each building.

58 Is the area underneath the suspended/floating floors in the IT rooms to be cleaned? No. Cleaning interstitial spaces is not part of the requirement.

59 Is the contractor responsible for moving the contents of each room before and after cleaning?

Contractor shall include all existing furniture, equipment and fixtures in the cleaning. Personal items are not part of the requirement.

60 Does this project require a full cleaning of the walls and attic space in the high bay simulator room?

Contractor shall clean building surfaces only. Goverment does not have a lift to provide for contractor use.The flight simulator is not part of the requirement.

61 Is this job a Mold Remediation job or a Cleaning job? The requirement is for cleaning only.

62 Please confirm if Mold Testing has been performed yes or no?

Will a Mold Clearance test be required? No testing was done. Post testing is not reqired.

63 Will a staging area be supplied at an acceptable location for each building?

Storage space will be identified within each facility with coordination of the respective Facility Manager.

Will a contents inventory be supplied on a room-by-room basis? Ie: (personal Items, electronic equipment, desk, cubicles, furniture, etc.)

Visual inventory will be done with Facility Manager for government items only.

65 Will all paper products, files and personal possessions be removed from the surface areas requiring cleaning?

Contractor shall include all existing furniture, equipment and fixtures in the cleaning. Personal items are not part of the requirement.

Per the PWS. The Contractor is responsible for delivering a certified mold-free environment across all target locations.

The following task define the required performance outcomes.

How will a certified mold-fee environment across all target location be determined?

Government will conduct visual inspection of areas. Sampling and testing is not required.

In the pre bid job walk it was expressed all ceiling tile will remain in place unless damaged. Will an estimated quantity of damaged ceiling tile removal be supplied and will replacement be required by the Contractor?

Visibly contaminated ceiling tiles shall be replaced. Replacement of ceiling tiles is NTE 20% of building total.

68 What is the cleaning requirement regarding air pathway above the ceiling? If the ceiling tiles remain in place how is this to be identified and addressed?

Visibly contaminated ceiling tiles shall be replaced. Replacement of ceiling tiles is NTE 20% of building total.

In theTrent Lott Simulator room 2603-0061-001 Flight Simulator AMC A3T 5050 sf will we be required to physically clean the simulator?

Contractor shall clean building surfaces only. Goverment does not have a lift to provide for contractor use.The flight simulator is not part of the requirement.

70 The Simulator room is 42 feet high, is there access to allow an aerial lift to enter the room? Yes. Coordinate with Facility Manager.

During the pre-bid job walk it was disclosed that there is a 9-foot open pathway between the first and second floor, this area was not offered for inspection. What if any cleaning takes place in this area? No. Cleaning interstitial spaces are not part of the requirement.

72 Will substitutions for anti-microbial agents be allowed? Can a peroxide based anti-microbial agent be substituted for the plant based anti-microbial agent, including fogging?

Contractor can submit alternate materials for approval. Plan for specified materials.

73 Please confirm upon the completion of each room, the room will be inspected daily and signed off as completed?

Sections/rooms shall be inspected upon contractor request at the Government's earliest availability.

74 Will the humidity issues in each building be resolved before the cleaning process begins? No. HVAC conditions will not be corrected prior to the start of work.

75 What is the total square footage for each occupied building listed in the SOW? See attached revised drawings.

76 What are the ceiling tiles sizes for each building? 2' x 2'

77 Is there insulation above the ceiling tiles in Jones Hall and Dolan Hall buildings? No insulation is identified or required to be cleaned.

Upon completion of the cleaning and sanitization work in each individual room, will the Government inspect and accept/sign off on that room? Due to the existing humidity conditions within the buildings and the potential for mold to recur, we request that acceptance be documented as each room is completed.

Sections/rooms shall be inspected upon contractor request at the Government's earliest availability.

The Performance Work Statement requires the Contractor to assess and remove all affected or damaged suspended ceiling tiles and to clean and sanitize the suspended ceiling grid to remove biological residue. Can the Government provide an approximate quantity or percentage of ceiling tiles anticipated to require replacement for bidding purposes?

Visibly contaminated ceiling tiles shall be replaced. Replacement of ceiling tiles is NTE 20% of building total.

80 The drawings provided on August 25 identify the square footage of the rooms, however, the room numbers appear to be incorrect. Can the Government provide revised drawings identifying the correct room numbers? See attached revised drawings.

During the site visit, it was stated that the ductwork had previously been cleaned. Please confirm that the Contractor's scope is limited to cleaning and disinfecting the supply, return, exhaust vents and registers serving the designated rooms, as required, and that cleaning of the ductwork itself is not included.

3.3 Core Cleaning Outcomes (Applicable to Buildings 4116, 2603, & 6902) HVAC Air Pathways: Clean and disinfect all supply, return, and exhaust vents and registers in the target rooms. Interstitial spaces and above ceiling duct cleaning are not required.

The bid documents require temporary containment barriers "if required." Please clarify whether containment barriers are required during the cleaning and sanitization process in each of the three buildings and, if so, whether containment is required for each individual room or work area.

Contractor to determine if a temporary containment barrier is necessary based on severity of the mold.

Please confirm that, upon completion of the required cleaning and sanitization, the Government will perform a visual inspection for acceptance and that no post-remediation air sampling, surface sampling, mold testing, or other environmental testing will be required of the Contractor. Confirmed.

In one of the rooms in Jones’s Hall it was said that the wall paneling will need to be removed to clean behind it. All walls in Jones Hall that have gypsum board are known to contain asbestos. Therefore, removing this paneling (or anything fastened to gypsum wall board) will not be possible without potentially disturbing asbestos. Please clarify how the contractor will successfully clean these areas without disturbing asbestos containing gypsum wall board or other ACM materials? Wood panels are not required to be removed.

85 Have HazMat surveys been performed in all buildings to determine if and where asbestos is present on materials such as gypsum wall board, pipe insulation, etc.? No testing was done. Post testing is not reqired.

86 The SOW requires “a certified mold-free indoor environment across all target locations. Please define "certified mold free environment." A cleaned/sanitized environment showing no visible signs of mold.

87 Being the source of the mold growth issue is not corrected prior to performing mold sanitization, how can the contractor provide a certified mold free environment? The expectation would be mold free at the time of completion.

88 If the scope is to clean/sanitize target locations and NOT perform a mold remediation, how can the contractor guarantee a certified mold free environment?

No guarantee is expected since we are not looking for remediation, only clean/sanitize.

89 If the clearance criteria is visual only how will it be determined what is acceptable for clearance. For example, upon inspection how would it be determined what is mold staining on previously cleaned surfaces versus active mold growth?

Visual inspection shall be conducted after cleaning. Contractor can identify stained areas that cannot be cleaned prior to acceptance.

The SOW mentions containments and negative pressure air filtration if required. Being that mold contamination is not isolated to certain areas of these buildings (but throughout the ac systems and entire buildings to some degree) how can the contractor determine “if” or “where” containment or negative pressure would be required? Contractor shall determined the reasonable execution method.

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