2019-193-E AMS - Sasser Companies ES remediation

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DocuSi n Envelope ID: B94F2D40-3B3C-47A7-86C2-6F1 B4F92C62C E tnvironmentai 3omuons uroup Leading people,companies and communities to live, Report with Protocols for Re m e d i a t i o n work and prosper in a sustainable environment. Visible indications of moisture and suspect microbial material observed: Indoors: • Visible signs of moderate suspect microbial growth were observed at the HVAC cassette units throughout the building. Signs of condensation were observed at a portion of these units. o Air testing for microbial spores was previously collected by a company unrelated to ESG, and their findings indicated elevated airborne fungal spore counts in room 213. o Suspect microbial growth was previously reported by occupants on chairs and other contents. Most of these items were cleaned or removed from the building previous to the assessment. ■ This condition is generally due to elevated humidity levels(above 60%), which is likely primarily due to the HVAC units in the building not properly regulating the humidity.The elevated humidity directly from the air supplies was above 60%compared to the lower humidity (below 60%) measurements at breathing height. • Signs of moisture damage were observed at the majority of the windows, especially at the top of the windows and window troughs. o Elevated moisture measurements were collected at most of the windows (as well as the front entry doorway), with the highest readings collected from the 911 comm center front left window and below the window in the 2nd floor elevator lobby. • Elevated moisture measurements were collected from some of the exterior facing walls at the main level.These rooms include the command room, the EOC, room 116, room 119, and room 123. • Moisture stains and suspect microbial growth were observed on a couple of ceiling tiles in the EOC. Elevated moisture measurements were collected from the ceiling tile on the day of the assessment. Exterior: • The exterior showed signs of moisture patterns that are generally indicators of moisture intrusion/elevated moisture content(refer to image P). Surface Sample Findings: Surface samples were collected throughout the building where suspect microbial growth was observed. A second surface sample collection was performed in the warehouse to randomly sample contents used by the EMS. The samples were hand-delivered to Scientific Analytical Institute (SAI) in Greensboro, North Carolina for laboratory analysis. SAI is an independent laboratory that is accredited by the AIHA and participates in the NVLAP program (refer to attached lab reports). The IICRC S520 Standard Reference Guide for Professional Mold Remediation accounts for the fact that all indoor environments will have some degree of fungal material that is detectable by a microbiology lab on surface samples collected from the building and has defined this as 'normal fungal ecology.' Hygienists routinely use the lab's scoring system of 1-2-3-4 to define normal ecology as a rating of 1 or 2 (trace or light)with a rating of 3 or 4(abundant or loaded) being considered an abnormal level of fungi in a surface sample. Below are the significant findings: SAI identified a loaded (4) count of the allergenic fungi Cladosporium at the HVAC supply in room 211. SAI identified a light (2) count of the pathogenic fungi Aspergillus/Penicillium-like at the 911 com center left window. SAI identified an abundant (3) count of the pathogenic fungi Aspergillus/Penicillium-like at the warehouse ERT bag. SAI identified a loaded (4) count of the allergenic fungi Cladosporium at the sympathy fridge in room 135 (in the warehouse). Environmental Solutions Group • 1000 N. Elm St., Greensboro, NC 27401 • 336-373-1538 • www.Go-ESG.com