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NYC-WTC_000221469

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NYC 9/11 Public Portal Document

INDUSTRIAL HYGIENE ENVIRONMENTAL TESTING •EP/UNVLAP 101262-D ‘NY DOHiNELAC 10903 •NJDEP PA(J20 • AIHA ACCREDITATION NO. 100439 • PA DEP 08-353 • CTDPHPH0238 •NCDENR599

ANALYTICAL SERVICES Analytical Results ■ for ATC Associates WorkOrder: R02040518 Client Reference: 19125-0297, Dust

Analyte Concentration Limit of Test Date Analyzed Detection Method /Analyst (ug) ; (mg/nP) ; (ppm) (HS) Client ID: Dustl ATC-04II-89M Lab ID: -01A Date Sampled: 4/11/02 Matrix: Filter AirVoI.(L): 1^40 Total Particulate Matter <50.0 <0.00347 50 N0500 04/15/2002 TEN

(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_002887817

NYC-WTC_000221469

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NYC-WTC_000221469Source: NYC Law Department, mirrored locally

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PSC Analytical Services results for dust samples collected at P.S. 89M on March 28, 2002.

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