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WKP Air Sample Analysis Report for WTC SW Area, Apr

Machine-extracted title · confidence 95%

Laboratory report detailing phase contrast microscopy results for airborne fiber counting in the southwest area of the World Trade Center site dated April 16, 2002.

NYC-WTC_000161786–000161797

Folder label: “WTC- Air Data

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NYC 9/11 Public Portal Document

LABORATORIES, INC AIR SAMPLE ANALYSIS REPORT PHASE CONTRAST MICROSCOPY

CLIENT: WARREN & PANZER ENGINEERS, P.C. TURNAROUND TIME 24HRS WKP FILE # 501-01 SAMPLE DATE 4/19/02 WKP LOG I.D. # N0204166, N0204167 and N0204168 RECEIVED DATE 4/19/02 Contract #: WTC AR2 ANALYSIS DATE 4/19/02

REPORT DATE 4/20/02 CLIENT JOB: NYC Department of Environmental Protection

CLIENT JOB #: 1079.01.01

LOCATION S.W. Area/ Site Map

ANALYSIS: AIRBORNE FIBER COUNTING, PHASE CONTRAST MICROSCOPY, NIOSH 7400. NIOSH PAT Lab NO. 07186; NY STATE ELAP Lab NO. 11251. COLLECTION DEVICE: 25 mm MCE Filter Cassette; Collection Area = 385 sq mm; Field Area = 0.00785 sq mm.

SAMPLE WERE COLLECTED BY: Festy Osemwegie, Jeseron Garcia and Benny Giambnone

SUMMARY OF ANALYSIS

CLIENT VOLUME FIBERS/ SAMPLE # Site# SAMPLE LOCATION (LITERS) sqmm FIBERS/ cc 1079.01.01

001 27 Gateway Plaza Park Area 675 0.0 <0.004 002 31 South End Ave. and Albany Street 675 0.0 <0.004 003 32 West Street and Albany Place 675 0.0 <0.004 004 33A Rector Place by the Park Place 675 0.0 <0.004 005 34 W. Thames Street - Along Waterfront 675 0.0 <0.004 006 37 West of Third Place 675 0.0 <0.004 007 8 West Street and Warren Street 675 0.0 <0.004 008 4 River Terrace and Chambers Street 675 0.0 <0.004 009 6A River Terrace Park Area Between Park Place and Warren Street 675 0.0 <0.004 010 9 River Terrace and Park Place West 675 0.0 <0.004 oil 17 River Terrace and Vesey 675 0.0 <0.004 012 7 Warren Street and North End Avenue 675 0.0 <0.004 013 10 North End Avenue Park place West 675 0.0 <0.004 014 29 Trinity Place and Thames Street 675 10.2 0.006 015 21 Fulton and Church Street 675 9.6 0.005 016 20A Vesey Street and West Broadway 675 6.4 0.004 017 16 Park place and Church Street 675 12.7 0.007 018 12 Murray Street and Church Street 675 2.5 <0.004 019 15 Park Place and Greenwich Street 675 0.0 <0.004 020 11 Murray Street and Greenwich Street 675 3.2 <0.004 021 ' Field Blank 0.0 022 Field Blank 0.0

NOTES: 1. 5.5 fibers/100 fields was used to calculate the limit of detection (LCD). Results below the LCD have no statistical validity. 2. Samples were not collected by WKP Laboratories, Inc.

4. PCM air samples will be disposed of after 3 months unless otherwise directed by client in writing.

Chris Pepino LABORATORY ANALYST LABORATORY DIRECTOR

NYC-WTC_000161790

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NYC-WTC_000161790Source: NYC Law Department, mirrored locally

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