NYC 9/11 Public Portal Document
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?.0 Executive Summary
ALC Environmental Incorporated (ALC) has been retained to perform bulk
sampling, visual assessments
K 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
sample, which was then sent to
a third party independent laboratory for analysis. In most cases there was
insufficient debris to sample and
a visual assessment only was performed. If any areas were found to be
positive after analysis, they were
sent to another laboratory for further analysis and quality control All
confirmatory samples analyzed
were found to be below the permissible limits for asbestos
However, certified asbestos abatement contractors hired independently by the owner,
were used to clean
those specific apartments found to be in question, Upon satisfactory cleaning
and following a visual
inspection by ALC samples were collected and analyzed via Transmission Electron
Microscopy (T EM)
sampling, All air samples were found to be below the permissible limits
i
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ALC then collected T}M samples on every floor in the budding. 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 I1
AHERA/ASHARA (40 CFR
PART 763) Asbestos Regulations: the slew• York State Department of Labor
Industrial Code Rule 56 and
the New York City Department of Environmental Protection Title 15 Asbestos
Regulations.
The air samples were collected by Alvin B. Blake, a licensed sampling technician
(AH#01-03528) and
Y. Benvaguya a licensed project monitor (AH# 95-2 1 191) under the supervision of
Arrierico Rodriguez Jr ,
a licensed project monitor (AH# 89-07160). Tae visual assessment and bulk
samples were collected by,
A.R. Blake a NY State Asbestos Inspector (AH700-08397) and Americo
Rodriguez, a NY State Asbestos
Inspector (AH#89-07160).
ATC Associates (ELAP #10879) analyzed the samples using the Transmission
Electron Microscopy (TEM)
Methodology, The results indicated that the living areas achieved the acceptance
criteria below <70
structures per mrn2 set by the above regulations.
3.0 Definitions
Air Sampling: Process of measuring the fiber content of a known volume of air
collected during a specific
period. The procedure utilized for asbestos follows the NIOSH Standard Analytical
Method 7400, or the
provisional transmission electron microscopy methods developed by the US EPA
which are utilized for
lower detection levels and specific fi ber identification.
Asbestos: Any hydrated mineral silicate separable into commercially usable fibers,
including but not
limited to chrysotile (serpentine), amosite (cumingtonite-grunerite), crocidolite
(riebeckite), tremolite,
anthophyllite and actinolite.
NYC-WTC 000117725
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