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Analytical results for metals at M894 school, June 2002

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Laboratory report page showing analytical results for metal samples collected at the referenced school in late May or early June.

NYC-WTC_000175571–000175573
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NYC 9/11 Public Portal Document ^Lin OG 02 01:42p PSC blU-iJcTi - aOD /

INDUSTRIAL HYGIENE ENVIRONMENTAL TESTING PSC AHMVTSCM. • EPAjWLAP 101262-0 • NY D0H4JE1AC10903 •NJDEPPA02I) • AIHA ACCREDITATION NO. 100439 • PA DEP 05353 ■CTDPHPHJ)238 •NCOENR 599 Analytical Results for ATC Associates WorkOrder; R02051023 Client Reference: 19125-0290, METALS

Analyte Concentration Limit of Test Date Analyzed Detection Method /Analyst (ug) ; (mg/m’) • (ppm) (ug)

Client ID: ATC-0524-M894 M5 Lab ID: -OSA Date Sampled: 5/24/2002 Matrix: Filler Air Voi.(L): NA Alunninum <1.00 1 N7300 MCE 06/04/2002 AJB Cadmium <0.200 0.2 N7300 MCE 06/04/2002 AJB Chromium 0.667 " 0.2 N73t» MCE 06/04/2002 AJB Cobalt <0.100 0.1 N7300 MCE 06/04/2002 AJB Copper <0.200 0.2 N7300 MCE 06/05/2002 AJB Iron <2.00 2 N7300 MCE 06/04/2002 AJB Lead <0.300 0.3 N7300 MCE 06/04/2002 AJB Magnesium <1.30 1.3 N73O0 MCE 06/04/2002 AJB Manganese <0.300 0.3 N7300 MCE 06/04/2002 AJB Molybdenum <1.00 1 N7300 MCE 06/04/2002 AJB Nickel <0.200 0,2 N7300 MCE 06/04/2002 AJB Zinc <0.500 0.5 N7300 MCE 06/04/2002 AJB

Client ID: ATC-0524-M894-M6 Lab ID: -06A Date Sampled: 5/24/2002 Matrix: Filter Air Vol.(L); NA Aluminum <1.00 1 N7300 MCE 06/04/2002 AJB Cadmium <0.200 0.2 N7300 MCE 06/04/2002 AJB Chromium 0,672 0.2 N7300 MCE 06/04/2002 AJB Cobalt <0.100 0.1 N7300 MCE 06/04/2002 /UB Copper <0.200 0.2 N730O MCE 06/05/2002 AJB Iron <2.00 2 N7300 MCE 06/04/2002 AJB Lead <0.300 0.3 N7300 MCE 06/04/2002 AJB Magnesium <1.30 1.3 N7300 MCE 06/04/2002 AJB Manganese <0.300 0.3 N7300 MCE 06/04/2002 AJB Molybdenum <1.00 1 N7300 MCE 06/04/2002 AJB Nickel <0.200 0.2 N7300 MCE 06/04/2002 AJB Zinc <0.500 0.5 N73O0 MCE 06/04/2002 AJB

l a) Analysis indicates possitilc breakthrough; back section result is greater than 0% of the front section result

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

Page 3 of 3

CONFIDENTIAL, CITY_21MC100_003431684 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008

NYC-WTC_000175573

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NYC-WTC_000175573Source: NYC Law Department, mirrored locally

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