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Analytical results for air samples at M894 school, April 2002

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Laboratory report showing analytical results for aluminum and cadmium in air filter samples collected at the referenced school.

NYC-WTC_000175560–000175562
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NYC 9/11 Public Portal Document

INDUSTRIAL HYGIENE ENVIRONMENTAL TESTING •EP/ONVLAP101262-0 • NY DOH/NELAC 10903 •NJ DEP PA020 • AIHA ACCREDITATION NO. 100439 •PA DEP 06-353 •CT DPH PH-0238 •NC DENR 699 Analytical Results ANALYTICAL SERVICES for ATC Associates WorkOrder: R02040376 Client Reference: 19125-0290, Metals

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

Client ID: M3 ATC-0405-M894 Lab ID: -03A Date Sampled: 4/5/02 Matrix: Filter AirVol.(L): 1200 Aluminum <1.00 <0.000833 1 N7300 MCE 04/16/2002 AJB Cadmium <0.200 <0.000167 0.2 N7300 MCE 04/16/2002 /AJB Ctiromium 0.472 0.000394 0.2 N7300 MCE 04/16/2002 /UB Cobalt <0.100 <0.0000833 0.1 N7300 MCE 04/16/2002 AJB Copper <0.200 <0.000167 0.2 N7300 MCE 04/16/2002 AJB Iron <2.00 <0.00167 2 N7300 MCE 04/16/2002 /AJB Lead <0.300 <0.000250 0.3 N7300 MCE 04/16/2002 AJB Magnesium <1.30 <0.00108 1.3 N7300 MCE 04/16/2002 AJB Manganese <0.300 <0.000250 0.3 N7300 MCE 04/16/2002 /AJB Molybdenum <1.00 <0.000833 1 N7300 MCE 04/16/2002 AJB

Nickel <0.200 <0.000167 0.2 N7300 MCE 04/16/2002 AJB Zinc <0.500 <0.000417 0.5 N7300 MCE 04/16/2002 AJB

Client ID: M4 ATC-0405-MS94 Lab ID: -04A Date Sampled: 4/5/02 Matrix: Filter AirVol.{L): 1200 /Muminum <1.00 <0.000833 1 N7300 MCE 04/16/2002 AJB Cadmium <0.200 <0.000167 0.2 N7300 MCE 04/16/2002 AJB Chromium 0.461 0.000384 0.2 N7300 MCE 04/16/2002 AJB Cobalt <0.100 <0.0000833 0.1 N7300 MCE 04/16/2002 AJB Copper <0.200 <0.000167 0.2 N7300 MCE 04/16/2002 /AJB Iron <2.00 <0.00167 2 N7300 MCE 04/16/2002 AJB Lead <0.300 <0.000250 0.3 N730O MCE 04/16/2002 AJB Magnesium <1.30 <0.00108 1.3 N7300 MCE 04/16/2002 AJB Manganese <0.300 <0.000250 0.3 N7300 MCE 04/16/2002 AJB Molybdenum <1.00 <0.000833 1 N7300 MCE 04/16/2002 AJB Nickel <0.200 <0.000167 0.2 N7300 MCE 04/16/2002 AJB Zinc <0.500 <0.000417 0.5 N7300 MCE 04/16/2002 AJB

Page 2 of 3

CONFIDENTIAL, CITY_21MC100_003431642 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008

NYC-WTC_000175561

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NYC-WTC_000175561Source: NYC Law Department, mirrored locally

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