TEM Asbestos air sample results, NYC BOE, Nov 2001

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client S 2 NYC BOE Volume ‘liters): 1936 Lab Gi iKii 5970 Filter Type / Filter Area: MCE 385 rniTt- Lab Saiit;): '0 Grid Opening Size: 0.01124

Client Si;n : #: I 0 Area Examined: 0.04496 mtn"

GRID BO; a-'tV Magnification: 20,000 GRID 11A Accelerating oltage: 100 KeV # Grid f it) Jigs: 4 Analysis Date: 11/25/01

Analysis Performed Bv: ROM.AN PEL sAKHOV

GO ‘Structure [ Structure Type j Length ID of Slruciure N or s EDS (Nonadb No F B C M <=05 y >=5p Chrys Amphibole | Nonasb Ambig/ND No CooA Elements) <5y C TZS2_ 3^ If fi­ ll .5/^ —

I Struct = - 5:1 Aspect Ratio Grid acceptance: •/= Positive dittra< on pattern properties conforming to <50% undissolved filter, overlapped or folded Totals <10% particulate coverage <50% coverage ate laboratory identifr . cion criteria observed least 20 unfolded oi overlapped grlc squares <5% B C M >6(j V= EDS speclriji-n onforming to laboratory holes oropacue areas identification crilei'- oDserved Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle i<3 fib <1 liber diameter apart Crocidolite Ambiguous C = Cluster |<3 Im ‘sections) Anthophyllite Non-Asbestos Tremolite M = Matrix Non-Identified Actinolite NSD = No Street Detected

CONFIDENTIAL, CITY_21MC100_003458397 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008

NYC-WTC_000179181