NYC-WTC_000197654

NYC 9/11 Public Portal Document 610-921-9667 P-5 Rpr 10 02 a3:27p PSC

INDUSTRIAL HYGIENE ENVIRONMENTAL TESTING •EPAmVLAP10t262-l) • NY DOHAIELAC 10803 •NJDEP PA02(l • AIHA ACCREDITATION NO. 100439 • PA DEP 06-353 •CTDPHPHO238 ■NC0ENRS98

ANALYTIC.\L SERVICES Analytical Results for ATC Associates WorkOrder: R02040253 Client Reference: 19125-0246, METALS

Analyte Concentration Limit of Test Date Analyzed Detection Method /Analyst (ug) ■ (mg/m’) ; (ppm) (ug) Client ID: ATC-0403..STY-h^^^^k J Lab tP: -OSA Date Sampled: 4/3/02 Matrix: Filter Air Vol.(L): NA Aluminum 1.58- 1 N730Q MCE 04/09/2002 AJB Cadmium <0.200 0.2 N730O MCE 04/09/2002 AJ3 —■Chromium 0,3! 0.2 N7300 MCE 04/09/2002 AJB Cobalt <0.100 0.1 N7300 MCE 04/09/2002 AJB Copper <0.200 0.2 N7300 MCE 04/09/2002 AJB iron <2.00 2 N7300 MCE 04/09/2002 AJB Lead <0.300 0.3 N7300 MCE 04/09/2002 AJB Magnesium <1.30 1.3 N7300 MCE 04/09/2002 AJB Manganese <0.300 0.3 N7300 MCE 04/09/2002 AJB Molybdenum <1.00 1 N7300 MCE 04/09/2002 AJB Nickel <0.200 0.2 N7300 MCE 04/09/2002 AJB Zinc <0.500 0.5 N7300 MCE 04/09/2002 AJB

(a) Analysis indicates possible 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. Back sections were checked and showed no significant breakthrough.

Page 3 of 3

CITY_21MC100_003046869

NYC-WTC_000197656