NYC-WTC_000212408

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1960 Lab Group #: 7349 Filter Type / Filter Area: MCE 385 rrm- Lab Sample #: II Grid Opening Size: 0.01124 ('lient Sample #: 11 Area Examined: 0.04496 mm^

(}RID BOX: COiy Magnification: 20,000 (,RID ID: Accelerating Voltage: too KeV Grid Openings: 4 Analysis Date: 4/7/02

Analysis Performed By: MICHAEL GORYCKI /w GO. Structure Structure Type Length ID of Structure N or V 1 EDS (Nonsdb No F B c; M >=05 p :>=5(J Chrys Amphibole Nonasb Ambig/ND '■Io Coord <5p Elements) ,

■(3IZ 4 p

q _i i

Struct = :> 0,5p > 5:1 Aspect Ratio Grid acceptance:

V - Positive diffraction pattern properties conforming to <50% undissolved filter, ovedapped or folded Totals laboratory identification cntena observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped gnd squares <5% F B C M >5o V - EDS spectrum conforming :o laboratory holes or opaque areas icentification cntena obsenred Chrysotile AMPHIBOLES Amphibole F Single Fiber Amosite B < Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos T remolite Lr = Matrix Non-Identified Actinolite NSD = No Structures Cetected I

CITY_21MC100_002866413

NYC-WTC_0002 12408