WKP Air Sample Analysis Report for WTC Sampling, Apr 2002

NYC 9/11 Public Portal Document

APRU08-2002 15=47 BANHM LABORATORY UNIT P. 10

WKP LABORATORIES, INC AIR SAMPLE ANALYSIS REPORT PHASE CONTRAST MICROSCOPY

CLIENT: WARREN & PANZER ENGINEERS. P,C. turnaround time 24KKS WKP FILE « 501-01 SAMPLE DATE 4<G/2002 WKP LOG I D,# N02043e I receive date 4«Z2002 Contrad#! WTCAR2 ANALYSIS C5ATB 4/8/2002 I REPORT DATE 4/7/2002 CUENT JOB; NYC Departmant of Sr.vIronmaouJ Protection

CLIENTJOB#; 1070.01,01

location WTC Sampling

ANALYSIS: AIRBORNE FIB® COUNTING, PHASE CONTRAST MICROSCOPY, NIOSH 7400. MOSH PAT HO NO, 07186; NY STATE ELAP Lab NO. 11251. COLLECTION DEVICE; Casaefle; Collection Area = 385 eq mm; Field Area = 0.00785 aq mm.

I sample WgRg COLLECTED BY: Pasty Osemwegte

SUMMARY OF ANALYSIS CLIENT VOLUME FieERS./ FIBERS/ SAMPLE # Sila# SAMPLE LOCATION CUTEftSi aq rnm ee 1073.01.01 001 Field Blank 0.000 002 Field Blank 0,000 003 29 Trinity Place and Thames Street 675 0.000 <0.004 004 21 Fulton and CF^jrch Street 675 0,000 <0.004 005 20A Vesey Street and West Broadway 675 0.000 <0.004 OQB 16 Part plats and Church Street 675 0.000 <0.004 007 12 Mumsy Street and Church SIraoi 67S 0.000 <0.004 008 15 Park Place and Groenwich Street «7S 0.000 <Q.QCM 009 11 Murray Street and Greerwich Street 676 0.000 <0.004

NOTES: 1. S.5 8bere/iao fields was used to Ml{Ulate me limit of doteetion (LOO). Results below the LOO h^va no statistical vsldity. 2. Samples were net eellected by WKP Laboretohes. Ine. 3. The Federal gPA Clearanec Critic#! foltowIriB an aabBsioa,abatement project is 0.010 fibers/oc. 4. PCM air samples will be disposed of after 3 monihs unless otherwise directed by client in wridns.

Chris Pepina ' Louis Lombordi LABORATORY ANALYST LABORATORY DIRECTOR

APR-00-2002 12:54 ■ % P,0P

NYC-WTC_000161780