NYC-WTC_000219835

NYC 9/11 Public Portal Document

r=SCZ INDUSTRIAL HYGIENE •EPAil>WLAP1012S2-0 •AIHAACCREDITATIONNO. 100439 •NCDENR5S9 ENVIRONMENTAL TESTING •NY DOHINELAC 10903 • PADEP0S-3S3 «NJ DEP PA020 • CT CPH PtiJ)23a

ANALYTICAL SERVICES Analytical Results for ATC Associates WorkOrdcr: R02030495 Client Reference: 19125-0291

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

Client ID: M5 ATC-0309.MS33 T/ Lab ID: -OSA Date Sampled: 3/9/02 Matrix; Filter Air Vol.(L): NA Aluminum <1,00 1 N7300 MCE 03/19/2002 TH Cadmium <0.200 0.2 N7300 MCE 03/19/2002 TH ——Chromium 0.379 ------- 0.2 N7300 MCE 03/19/2002 TH Cobalt <0.100 0.1 N7300 MCE 03/19/2002 TH Copper <0.200 0.2 N7300 MCE 03/19/2002 TH Iron <2.00 2 N7300 MCE 03/19/2002 TH Magnesium <1.30 1.3 N7300 MCE 03/19/2002 TH Manganese <0.300 0.3 N7300 MCE 03/19/2002 TH Molybdenum <1.00 1 N7300 MCE 03/19/2002 TH Nickel <0.200 0.2 N7300 MCE 03/19/2002 TH Zinc <0.500 0.5 N73OO MCE 03/19/2002 TH

(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_002881845

NYC-WTC_000219837