NYC-WTC_000220276

NYC 9/11 Public Portal Document

FROM ; FAX Np: : Oct. 30 2001 02:30PM P4 I

TRACE ANALYTICS, INC. AirCheck ✓Report” Copyright© 2000 Trace Analylics, Inc. 15768 Hamilton Pool Road • Austin. Toxas 78738 voice; 800-AIR-1024 or 512-263-0000 • Fax; 512-263-0002 Customer No.: 95 E-mail: [email protected] . . , Report No.; 01-12673

Date Received; Tue, October 30. 2001 Compressed Air Systems Inc. Date Analyzed: Tue. October 30, 2001 Mr. Robert Miller, Jr. Date Reported; Tue, October 30, 2001 PO Box 567 Sampled By: Jeffrey W. Gouldey Buckingham PA 18912 Date Sampled; Fri. October 26, 2001 Air Source ID; Mako S/N 81-14-60-1

Sampled for Ground Zero .V

Results vs NFPA 1500-1997 & CGA G-7.1-1997 Grade 0(C) Air Quality Specification u . Concentration QC Results, %*

Limiting Characteristic Source Ambient Specification Accuracy Precision

Oxygen, Volume % 21.0 21,0 19.5-23.5 100 ■ 0.0

Nitrogen / Argon, Volume % 78.1 / 0.9 78.1 / 0.9 N/A / N/A 101 0.6

Carbon Monoxide (CO), ppmv <0.5 8.2 10 100 0.1 ■

"Carbon Dioxide (CO,), ppmv 372 413 1000 99 . 2.4 Water (H,O), ppmv/DewpoInt, °F <24/<-95 N/A 24/-65 (W) 105 4.5 Total TVHC (inclodlns CH.), ppiflV ■ 2'.2 4.8 N/A 100 0.4 Volatile Hydrocarbon Methane (CHJ, ppmv 2.2 2.4 N/A . 100 0.6 . Content (TVHC) TVHC <«clydlna CH.), PPmV ■ <0.6' 2.4 ■N/A N/A N/A OU (condensed) & Particulate, mg/m^ <0.04 N/A " 5 100 0.0 Odor (provided by customer) None/Slight ■ N/A None/Slight N/A N/A other N/A N/A N/A N/A N/A This sample COMPLIES with the above referenced specification.

Customer • Compressor Hours 537.72i Comments 'T E;-/c IwoW^CGA^Tl°1^rrat)f^N^F* br®’bVrT T N exfreme cold where m’oisrure can condense and freeze cauahgthe breathing apparatus to malfuncticn. a dew point not to exceed -65T Ppm W R O tie coWestteniperature eipecied In the is r«5Liired..." Dew pant is expressed tn °F at one atnxwere ' AT C E E S •ibisQCd^wasacquifeaMxhtfiesaniptesetwhicnincludeslhesampissfepoftedherein. /uxuracy relates observed to cwpeetedresUtel 100% is comple agreernent). P^.isiofi relates to reproducibirity (0.0% is complete aoreefnenO. At Trace Analytics, ino., calibrelion and QC aooouni fcf about 20% of anatysg Analytical Gases aVapos CAT-A-01 Gas Cnromatography/Mass Spectrometry Madia Source Botuc: 71lb75 Test • Oil & Rarsculate CAT-a-OS Analytical Gravimetiy sample Source Filter 107259 MethocS PartaeSize CAT-A-04 ■ Optical Microscopy Numoers Amttert Botue; 03621 Accredited Since 1991 By :»* American Association for Laboratory Accreditation A2LA Certificate No, 322.01

CITY_21MC100_008107430

NYC-WTC_000220276