NYC-WTC_000226226

NYC 9/11 Public Portal Document r ■

INDUSTRIAL HYGIENE ENVIRONMENTAL TESTING •EPWNVLAP 101262-0 • NY DOHflMELAC 10903 •NJDEPPA020 •AIHAACCREDITATIONNO. 100439 • PA DEP 06-353 •CT DPHPH-0238 ■NCDENR599

ANALYTICAL SERVICES Analytical Results for ATC Associates WorkOrdcr: R02050242 Client Reference: 19125-0290, Metals

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

Client ID: ATC-0503-M894-M5 Lab ID: -OSA Date Sampled: 5/3/2002 Matrix; Filter Air Vol.(L): NA Aluminum <1.00 1 N7300 MCE 05/15/2002 AJB Cadmium <0.200 0.2 N7300 MCE 05/15/2002 AJB Chromium 0.294 0.2 N730O MCE 05/15/2002 AJB Cobalt <0.100 0.1 N7300 MCE 05/15/2002 AJB Capper <0.200 0.2 N7300 MCE 05/15/2002 AJB Iron <2.00 2 N730O MCE 05/15/2002 AJB Lead _ 0.360 0.3 N7300 MCE 05/15/2002 AJB Magnesium <1.30 1.3 N7300 MCE 05/15/2002 AJB Manganese <0.300 0.3 N7300 MCE 05/15/2002 AJB Molybdenum <1.00 1 N7300 MCE 05/15/2002 AJB Nickel <0.200 0.2 N7300 MCE 05/15/2002 AJB Zinc <0.500 0.5 N7300 MCE 05/15/2002 AJB

Client ID: ATC-0503-M894-M6 Lab ID: -06A Date Sampled: 5/3/2002 Matrix: Filter Air Vol.{L): NA Aluminum <1.00 1 N73O0 MCE 05/15/2002 AJB

Cadmium <0.200 0.2 N7300 MCE 05/15/2002 /VIB Chromium 0.439 0.2 N7300 MCE 05/15/2002 AJB

Cobalt <0.100 0.1 N7300 MCE 05/15/2002 AJB

Copper <0.200 0.2 N7300 MCE 05/15/2002 AJB

Iron <2.00 2 N73O0 MCE 05/15/2002 AJB

Lead _. 0.341 0.3 N7300 MCE 05/15/2002 AJB Magnesium <1.30 1.3 N7300 MCE 05/15/2002 AJB

Manganese <0.300 0.3 N73O0 MCE 05/15/2002 AJB

Molybdenum <1.00 1 N7300 MCE 05/15/2002 AJB Nickel <0.200 0.2 N7300 MCE 05/15/2002 AJB

Zinc <0.500 0.5 N7300 MCE 05/15/2002 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.

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CITY_21MC100_002895088

NYC-WTC_000226228