21 Matthew circle

Assessment Conducted January 3, 2022

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Humidity and Material Moisture
Humidity and Material Moisture

Pass. Low moisture and humidity.

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Formaldehyde, VOC's, Particle Count
Formaldehyde, VOC's, Particle Count

Low, well below acceptable tolerances. (Pass)

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Humidity and Material Moisture
Humidity and Material Moisture

Pass. Low moisture and humidity.

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Environmental inspection:
Inspect and assess basement for any environmental issues related to previous mold and flooding issues. Please view slide-deck for photo-verification and table for data summary.

On-Site Assessment:
Upon entering the basement technicians observed an abundance of work having been completed to repair previous flood and mold issue. Including but not limited to: foundation repair, French drain, vapor barrier, sheetrock removal, stud and base plate removal.

There was no immediate odor or hint of moisture. Carbon monoxide readings were zero and particle counts were well within minimal acceptable tolerances. Volatile Organic Compounds (VOC"s) related to material off-gassing were also within acceptable standards. Formaldehyde reading were considered low. Please review table below for exact measurements and EPA standards.

Humidity levels (50%) were within a normal (winter) range of 45-55%

Moisture levels were checked using a 'pin-type' invasive moisture tester measuring two to three millimeters within studs, joists and sheetrock. The concrete floor did not exceed 10% moisture. All were well below acceptable tolerances of 17%.

Two surface samples were taken and sent for laboratory analysis. (Prestige Enviromicrobiology) The first of two samples were taken from an inside wall cavity with the second from lower part of the basement staircase. Results posted below.

An electrostatic sporicidal treatment was applied for precautionary measures. All rooms, wall and ceiling cavities were treated with special attention to the basement staircase.


 

 

1. Overview

The HVAC system and network of air ducts were visually inspected and cleaned. The work area consisted of entire living space of the first and second floors, including basement and attic. Two air handlers, one in the basement and one in the attic, were cleaned (see specifications below). There were a total 17 registers, including returns. three bathrooms with associated vents and ducting were inspected and cleaned. 425 feet of flex duct including the galvanized main trunks were inspected and cleaned. Multiple access points were used to allow for inspection and manual cleaning and also to attach a negative air machine. Two outside condenser units were also Inspected.

 

It is recommended that filters with a Merv rating of 7 or higher be changed every 90 days or as needed. Both systems were well sealed. No sign of leaks in air handlers or conduits. AHU coils and fins were intact and cleared of moderate debris.

 
 

2. Project & System Specifications

Cleaning Method and Air Handler componets specified on page 6 of procedural report below.

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3. Air Handler(s)

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Two forced hot air furnaces were inspected, cataloged and cleaned. The systems were in good working order. No biological growth to be reported inside the systems. The units had humidity and moisture levels well within accepted tolerances. See photo slide-deck.

 

5. Ductwork, Registers & Vents

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Fans, Vents & Registers: Seventeen (17) vents and registers were removed in order to accessed ductwork for manual cleaning. Registers were summarily cleaned and replaced in a pre-recorded order.

Main Trunks: Supply trunks were found to be sealed and was cleared of a moderate amount of construction debris .Both were free of both moisture and biological contaminants. Access point were cut and re-sealed by SMACNA international standards. See photo deck.

Ductwork:  Flex duct connections were found intact. The home space was left sealed and intact. Ductwork contained a moderate amount of construction debris and was cleared. Access points were used in the ductwork to attach a Nikro 5,000 CFM HEPA negative air machine. Interior of ductwork was cleaned using mechanically rotating brushes and a 20' flexible cable with a 8" nylon brush (whip).

 

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6. Containment, Equipment & Condensers

Containment Floors were protected where neccessary and .3 mil plastice was used to contain areas from possible cross-contamination.

 

Equipment: Nikro 5000 CFM Negative Air Machine. 2-Stage HEPA Filtration with 99.97% filtration. 5" static pressure, 115v/13 each of two motors. Varying sizes of Nylon and Silica rotating brushes (whips). 115v electric oil-free air compressor with forward & reverse blowing nozzles.

Condenser units: 

Two condenser units were inspected and appeared relatively new and in good working order.

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7. Procedural Report

 

8. Certificate of HVAC System Care & Duct Cleaning

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Click to download

9. Inspection Schedule

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