NYC-WTC_000205639

NYC 9/11 Public Portal Document

CENTAL /> ate 0 The First Choice for Environmental Testing & Consulting

October 9. 2001

Gateway Plaza Management Corporation 375 South End Avenue New York. New York 10280 Via Facsimile

Subject; Gateway Plaza Building #200

Gentlemen;

ALC Environmental Incorporated (ALC) has been retained to perform bulk sampling, visual assessments & air monitoring according to the EPA Protocol to determine the presence of asbestos at the above referenced project. Every apartment in the building was assessed by our inspectors for dust and debris. Any area where visible dust and debris was found, ALC’s inspectors took a bulk sample, which wa.s then sent to a third party independent laboratory for analysis. In most cases there wa.s insufficient debris to sample and a visual assessment only was performed. Additionally, air sampling was performed using TEM Methodology on every floor in the building

Twenty-one (21) initial background air samples were collected and analyzed at building 200. Twenty-one (21) were analyzed via phase contrast microscopy (PCM) and twelve (12) were re-analyzed via transmission electron microscopy (TEM). All were below the pernussiblelimits. I Based on EPA Guidelines, we collected one hundred ninety-nine (199) bulk samples and analyzed them via Polarized Light Microscopy (PLM) Methodology. Sixteen (16) samples collected from six (6) apartments were found to be slightly above the regulatory limits of 1%. Of the sixteen (16) bulk samples that were found to be above the limits, zero (0) were found to be above the regulatory limits upon further analysis at a second laboratory for quality control purposes. However, certified asbestos abatement contractors hired independently by the owner, were used to clean those specific apartments found to be in question and the areas were cleared by ALC via TEM samp 1 ing. All air samples were found to be well below the permissible limits and the tenants where this cleaning took place have been notified of the clearance.

ALC then collected air samples on every floor in the building. The air sampling and analysis was done utilizing applicable Federal, State and City Regulations pertaining to asbestos to include Federal OSHA (29 CFR 1926.58) EPA NESHAPS (40 CFR PART 61). AND TSCA TITLE H AHERA/ASHARA (40 CFR PART 763) Asbestos

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NYC-WTC_000205639