NYC-WTC_000194864

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INDUSTRIAL HYGIENE ENVIRONMENTAL TESTING ■EPAWLAP 101262-0 • NY DOHNELAC 10903 •NJDEP PA020 • AIHAACCREDITATIONNO. 100439 • PA DEP 06-353 •CT DPHPH-C238 •NC DENR599

ANALYTICAL SERVICES Analytical Results for ATC Associates WorkOrder: R02040638 Client Reference: 19125-0289

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

Client ID: ATC-0415-150M-M1 Lab ID: -OlA Date Sampled: 4/15/02 Matrix: Filter AirVol.(L): 1240

Aluminum <1.00 <0.000806 1 N7300 MCE 04/23/2002 AJB Cadmium <0.200 <0.000161 0.2 N7300 MCE 04/23/2002 AJB Chromium 0.495 0.000399 0.2 N730O MCE 04/23/2002 AJB Cobalt <0.100 <0.0000806 0.1 N730O MCE 04/23/2002 AjB Copper <0.200 <0.000161 0.2 N7300 MCE 04/23/2002 AJB Iron <2.00 <0.00161 2 N7300 MCE 04/23/2002 AJB Lead <0.300 <0.000242 0.3 N7300 MCE 04/23/2002 AJB Magnesium <1.30 <0.00105 1.3 N7300 MCE 04/23/2002 AJB Manganese <0.300 <0.000242 0.3 N73O0 MCE 04/23/2002 AJB Molybdenum <1.00 <0.000806 1 N730O MCE 04/23/2002 AJB Nickel <0.200 <0.000161 0.2 N7300 MCE 04/23/2002 AJB Zinc <0.500 <0.000403 0.5 N7300 MCE 04/23/2002 AJB

Client ID: ATC-0415-150M-M2 Lab ID: -02A Date Sampled: 4/15/02 Matrix: Filter AirVol.(L): 1240

Aluminum 1.05 0.000850 1 N7300 MCE 04/23/2002 AJB Cadmium <0.200 <0.000161 0.2 N7300 MCE 04/23/2002 AJB Chromium 0.368 - 0.000297 0.2 N7300 MCE 04/23/2002 AJB Cobalt <0.100 <0.0000806 0.1 N7300 MCE 04/23/2002 AJB Copper <0.200 <0.000161 0.2 N7300 MCE 04/23/2002 AJB Iron <2.00 <0.00161 2 N7300 MCE 04/23/2002 AJB Lead <0.300 <0.000242 0.3 N7300 MCE 04/23/2002 AJB Magnesium <1.30 <0.00105 1.3 N7300 MCE 04/23/2002 AJB Manganese <0.300 <0.000242 0.3 N7300 MCE 04/23/2002 AJB Molybdenum <1.00 <0.000806 1 N7300 MCE 04/23/2002 AJB Nickel <0.200 <0.000161 0.2 N7300 MCE 04/23/2002 AJB Zinc <0.500 <0.000403 0.5 N7300 MCE 04/23/2002 AJB

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NYC-WTC_000194864