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Metal analysis results for air samples, Dec 2001

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PSC Analytical Services report detailing metal concentrations including aluminum, cadmium, and chromium in air samples from December 2001.

NYC-WTC_000175028–000175029
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NYC 9/11 Public Portal Document

6103219667 P-4 Dec 12 O1 03:453 PSC Rnalatical Services

Analytical Results for ATC Associates WorkOrder; ROl120036 Client Reference; 19125-0246

Analyte Concentration Limit of Test Date Analyzed Detection Method /Analyst (ug)i (mg/mO ; (ppm) (ug)

Client ID: M-4, Blank Lab ID: -OSA Date Sampled: 12/3/01 Matrix: Filter Air Vol.(L): NA Aluminum <1 1 NIOSH Metals 12/05/2001 AJB Cadmium <0.2 0.2 NIOSH Metals 12/05/2001 AJB Chromium 0.261 0.2 NIOSH Metals 12/05/2001 AJB Cobalt <0.1 0.1 NIOSH Metals 12/05/2001 AJB Copper <0.2 0.2 NIOSH Metals 12/05/2001 AJB Iron <2 2 NIOSH Metals 12/05/2001 AJB Magnesium <1.3 1.3 NIOSH Metals 12/05/2001 AJB Manganese <0.3 0.3 NIOSH Metals 12/05/2001 AJB Molybdenum <1 1 NIOSH Metals 12/05/2001 AJB Nickel <0.2 0.2 NIOSH Metals 12/05/2001 AJB Zinc <0.5 0.5 NIOSH Metals 12/05/2001 AJB (a) Analysis indicates possible breakthrough; back section result is greater than % of the front section result.

General Notes; <: Less than the indicated limit of detection (LOD). Information not available or not applicable. Back sections were checked and showed no significant breakthrough.

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CONFIDENTIAL, CITY_21MC100_003429270 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008

NYC-WTC_000175029

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NYC-WTC_000175029Source: NYC Law Department, mirrored locally

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