Air sampling for hydrocarbons report, P.S. 126M, Sep 2002

NYC 9/11 Public Portal Document

Mr. Bernard P. Orlan September 13, 2002 Air Sampling for Hydrocarbons Page 2 P. S. 126 (Manhattan) ATC Project No. 15-19125-0343

The sampling locations were as follows:

1“ Floor Main Lobby, 2'“’ Floor Hallway by Room 235, 3^““ floor hallway by Room 317, 4* Floor Hallway by Room 435 and 4*" floor hallway by 405.

Results

The hydrocarbon in the analyte panel detected were A-Hydrocarbons and B-Hydrocarbons at concentrations of 0.096 parts per million (ppm) and 3.6 ppm respectively, in the sample collected from the 4* Floor Hallway by Room 405.

A-hydrocarbons, that include gasoline or light alcohols, and B-Hydrocarbons that include mineral spirits and naphtha, are. ingredients of fuels, cleaners, paints and coatings. The presence of these two analytes in this single sample cannot be linked to any specific activity in the building, it may be a trace contaminant from outdoors. No specific source has been identified. .

No other HCs in the panel were present in the samples above the limits of detection for the analyses.

ATC appreciates the opportunity to provide this indoor air quality, service to the DOE. Please call (212) 353-8280 extension 370 or 212 if you have any questions. 1 Sincerely, ATC Associates, Inc. Reviewed by:

Tenzin Namgrak^ James R. Cohn, CIH, CSP Industrial Hy^enist Regional Manager Industrial Hygiene Division

Attachment

CONFIDENTIAL, CITY_21MC100_003430879 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008

NYC-WTC_000175263