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WKP Air Sample Analysis Report for WTC Sampling, Apr 2002

Machine-extracted title · confidence 95%

Phase contrast microscopy report for airborne fiber counting at the World Trade Center site dated April 7, 2002.

NYC-WTC_000161783–000161785

Folder label: “WTC- Air Data

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NYC 9/11 Public Portal Document

hKun ; i*u LuriBHNUi PHX NU. : 1-&31-205-9263 Apr, 06 2002 01:50PM P2

220 East 4S1h Street 10th Acor

WKP laboratories, INC New York. NY 10017 Tel. (212) 922 0689 Fax. (212) 922-0630 AJR SAMPLE ANALYSIS REPORT REYiseu PHASE CONTRAST MICROSCOPY RSPORT AS«2

CLIENT; WARREN & PANZER ENGINEERS, P.O. turnaround TIME 2AHRS

WKP FILE# SDI-OI SAMPLE DATE 4»02

WKP LOG 1.0 « NO2D429 RECEIVE DATE 45JD2

contract *; WTCAR2 ANALYSIS DATE ASKQ

REPORT DATE 4«Q2 NYC OepartmerU of Enviretvnental Protection CLJENTJ09: CLIENT J0a». 107501.01

location AIR3ORNE fiber COUNTING, PHASE CONTRAST MICROSCOPY, NIOSH 7400 NIO9H PAT Lab ANALYSIS: NO, 07186; NY STATE ELAP Lab NO. 112S1. COLLECTION DEVICE: Area « 36S « mm; Field Area - 0.00786 sq mm.

SAMPLE WERE COLLECTED BY; PesN Osemweg^

SUMMARY OF ANALYSIS

CLIENT VOLUME FIBERS/ FIBERS/ SAMPLES Sited SAMPLE LOCATION (UTERS) eq mm cc 1C79.O1.O1 001 Field Blank COOO 002 F old Blank 0000 oca 11 Murray Sveot end Grwewnch Street 675 1J00 <0.004 0.004 004 12 Murray Street and Church Street 675 7.600 006 16 Park Place and Greenwich Slreei 675 S1QQ <0.004 006 18 Park place and Church Street 675 SlOO <aoo4 007 2CA Vesey Street and Wees Broadway 675 3.600 <0004 0C6 21 Fulton and Church Street 6*5 OCOO <0.004 DCS 29 Trinity Place and Tharnes Street 675 5.700 <X004

NOTES: 1. as fioersflOO fields was used tc calculate the limit o! oetoctlcn (LOO). Reaulbs below the LOO have no etetisticai validity. 2. Ssmpies ware not collected oy wkp laboratwies, Inc, 3. The Federal EPA Clearance Critical following an asbestos abMement project is aoio tajers/oc. 4. PCM air Semples will be disposed of after 3 months unless otherwise directed by client in writing.

OM jCeuit jCtniiiu^ LABORATORY ANALYST LABORATORY DIRECTOR

P0-d IINO Adoiwaoatn wHNbs El?: ST 2002-e0-ydH NYC-WTC_000161783

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NYC-WTC_000161783Source: NYC Law Department, mirrored locally

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WKP Laboratories inter-company invoice, April 2002 · Box DEP Box 42

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Laboratory invoice for PCM and PLM analysis services with sample receipt date April 8, 2002, documenting analysis turnaround options and quantities for WTC-related testing.

9 shared non-person entities · 1 shared topics · Same agency, volume and box · similarity 0.948

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