PAH air sampling report, PS 234M, Jan 2002

NYC 9/11 Public Portal Document

Mr. Bernard P. Orlan January 4, 2002 Air Sampling for PAHs Page 2 P. S. 234 fManhattan 1 ATC Project No. 1 5-1912.S-0279

SAMPLING RESULTS

ATC submitted eight (8) samples PAHs (plus one blank) to PSC for analysis. Copies of the laboratory reports are provided in the Attachment. Samples were collected from locations specified by the parents association consultant. The minimum collection time for each sample was ten (10) hours. The locations of the samples were:

• Cafeteria; • Room 118; • 2“<i floor hallway; • Room 315; • Front entrance (Outdoors); • Front Courtyard (Outdoors); • Back Playground (Outdoors); • Roof by air intake;

Each sample was analyzed for sixteen (16) PAHs (See Attachment). Three PAHs were detected indoors and one of those was also detected outdoors. The results are summarized in the tables.

TABLE 1 PAHs DETECTED December 6, 2001 Milligrams per cubic meter of air (mg/m^)

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Cafeteria *BDL 0.00024 0.00060 PAH-1 Room 118 0.00021 0.00041 0.00043 PAH-2 2nd fl Hallway BDL BDL BDL PAH-3 Room 315 0.00049 0.00092 0.00021 PAH-4 Main Entrance BDL BDL 0.00021 PAH-5 Front courtyard BDL BDL BDL PAH-6 Playground BDL BDL BDL PAH-7 Roof (intake) BDL BDL BDL PAH-8 *BDL = Below Detection Limit

CONFIDENTIAL, CITY_21MC100_003444872 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008

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