Air quality and dust analysis report, 88 Pine Street, Sept

NYC 9/11 Public Portal Document

All surfaces such as but not limited to the air-handling units, passenger and freight elevator lobbies, loading dock, main lobby, concourse level, roof top and cooling tower were wet wiped and HEPA vacuumed by a licensed asbestos contractor. All air filters within the said fan units were removed and disposed of as asbestos waste.

Please refer to the laboratory certificate of analysis for all samples collected.

In addition to the above, CTSI performed Indoor Air Quality testing from various areas of the building. The testing was performed for Particulate, Carbon Monoxide & Dioxide, Temperature & Relative Humidity. Temperature & Carbon Dioxide (CO2) levels were slightly elevated due to building shut down. Relative Humidity, Carbon Monoxide and Dust Particulate levels are within the OSHA standards.

CO2 is a colorless, odorless, tasteless gas that results from a combustion or metabolic process. Low CO2 concentration levels (which come from people) are always present in buildings. At concentrations above 5,000 PPM in air, a loss of mental acuity will occur. CO2 levels greater than 1,000 PPM indicate the lack of fresh air and poor ventilation or over occupation. Highly susceptible populations (i.e., elderly, asthmatic, immunodeficient) will experience some discomfort at levels of 800 PPM and greater. Typical office levels for CO2 are listed between 300 and 800 PPM. All levels collected on September 2511 ranged from 422 PPM to 706 PPM. Please refer to section VII.

The licensed asbestos contractor utilized for the project was Degmor, Inc. They have sent their documentation directly to your office.

Due to the outside air conditions with elevated dust levels and fumes from the clean up process, CTSI recommends that the outside fresh air louvers be kept closed and only opened when outside air has been checked by building engineering staff. Lack of fresh outside air will result in elevated Carbon Dioxide levels during building full occupancy after 10:00 AM. Tenants may report an increase in symptoms such as but not limited to headaches, mild dizziness and fatigue.

CTSI also, recommend the air filters on all fan units be inspected on a daily basis and if necessary, replaced during the outside clean up process. The cleaning contractor should only utilize HEPA filtered vacuums for building cleaning.

Furthermore, CTSI recommend periodic air quality monitoring during the outside clean up process.

Thank you for giving CTSI the opportunity to assist you on this project.

NYC-WTC 000120386