Air sample analysis report for WTC site, April 2002

NYC 9/11 Public Portal Document

WKP LABORATORIES, INC AIR SAMPLE ANALYSIS REPORT PHASE CONTRAST MICROSCOPY

CLIENT: WARREN & PANZER ENGINEERS, P.O. TURNAROUND TIME ’ 24HRS WKP FILE » 601-01 SAMPLE DATE 4/an)2 WKP LOO I.D. # N02044S RECEIVED DATE 4/8/02 Contract#; WTCAR2 ANALYSIS DATE 4/3/02 REPORT DATE 4«/02 CLIENT JOB; NYC Department of Environmental Protection

CLIENT JOB#: 1079.01.01

LOCATION wrcsampBng

ANALYSIS: AIRBORNE FIBER COUNTING. PHASE CONTRAST MICROSCOPY, NIOSH 7400. NIOSH PAT Lab NO. 0716$; NY STATE ElAP Lab NO. 11251, COLLECTION DEVICE: 2$ mm MCE Filter Caseefie; Cclleotion Area « 355 sq mm; Field Area s Q.00785 sq mm.

SAMPLE WERE COLLECTED BY: Benny Giembione

SUMMARY OF ANALYSIS CLIENT VOLUME FIBERS/ FIBERS/ SAMPLE# Site# SAMPLE LOCATION (LITERS) ,.sq mm cc 1079.01.01 001 $ West Street and Warren Street $75 7.6 0.004 002 4 River Terrace and Chambers Street 675 3.8 <0.004 003 6A River Terrace Park Area Between Park Place and Warren Street 675 2.5 <0.004 004 9 River Terrace and Park Place West 675 3.8 <0.004 005 17 River Terrace and Vesey 675 2.5 <0.004 008 7 Warren Street and North End Avenue 875 0.0 <0-004 007 10 North End Avanue Park piaca West $76 5.1 <0.004 008 Blank 0.0 009 Blank 0.0

NOTES: 1,5,6 fibers/IOD fields was used to calculate the Ilmit oFdatfictiQn (LOD). Results below the LOD have no statistical validity. 2. Samples were not collBcted by WKP Laboiatofles, ine. 3. The Federal EPA Clearance CrIHeal following an asbestos abatement project is 0.010 fibars/ec. 4. PCM air samples will be disposed of alter 3 months unless ottienvise directed by client in writing.

DM LABORATORY ANALYST LABORATORY DIRECTOR

NYC-WTC_000161722