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

CUENT: WARREN & PANZER ENGINEERS. P.C. • TURNAROUND TIME 24HRS WKP PILE# S01-01 SAMPLE DATE A/6/02 WKP LOG I.D, # N02C446 RECEIVED DATE 4/8/02 Convaet* WTCAR2 ANALYSIS DATE 4/0rtl2 REPORT DATE 4/9A)2 CUENT JOB: NYC Department of Environmental Proledion

CLIENT JOB#; 1079.01.01

LOCATION WTC Sampling

ANALYSIS: AIRBORNE FIBER COUNTING, PHASE CONTRAST MICROSCOPY, NIOSH 7400. NIOSH PAT Lab NO. 07168; NY STATE ELAP Lab NO. 11251, COLLECTION DEVICE: 25 mm MCE Filter Cassette; Collection Area » 395 sq mm; Field Area = 0,00785 sq mm.

SAMPLE WERE COLLECTED BY: Fesiy Osemw^te

SUMMARY OP ANALYSIS CLIENT VOLUME FIBERS/ FIBERS/ S/WIPLE# Site# SAMPLE LOCATION (LITERS) sqmm co T 1079.01.01 001 Inlaid Blank ' 0.0 002 Field Blank 0.0 003 29 Trlrtiiy Place and Thames Street 675 5.1 <0,004 004 21 Fulton and Chord, Street 678 6.1 <0,004 005 20A Vesey Street and West Broadway 67S 11.5 0,007 006 18 Park place and Church Street STS 10.9 0.006 007 12 Murray Street and Church Street 675 14,0 0.008 008 18 Park Place and Greenwich Street 675 10.2 0,006 009 11 Murray Street and Greenwich Street 67S 12.7 0.Q07

NOTES; 1.5.5 fibera/100 fields was used to calculate the Smit of detection (LOD), Reaulte below the LOD have no stsrtistical validity. 2. Samples were not collected by WKP Laboratories, Ino. 3. The Federal EPA Clearance Critical following an asbestos abaternerit project is 0,010 ^bers/cc. 4. PCM air samples will be disposed of alter 3 months unless otherwise dlrsded by client in writing.

DM LABORATORY ANALYST LABORATORY DIRECTOR

NYC-WTC_000161724