NYC-WTC_000211191

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters); 1840 Lab Group #: 8072 Filter Type / FUter Area: MCE 385 ninr Lab Sample #; 11 Grid Opening Size: 0.01124

Client Sample #: 11 Area Examined: 0.04496 mm^ Magnification: GRID BOX: GRID ID: # Grid Openings: 4 2^' Accelerating Voltage: Analysis Date: 20,000 100 KeV 6/12/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N orv EDS (Nonadb No F B C M ^5p :>=5m Chrys Amphibole Nonasb Ambig/ND No Coord <5m Elements)

/ft

5

Struct = > 0.5|i > 5:1 Aspect Ratio Grid acceptance: >/= Positive diffraction pattern properties conforming to "50% undissolved Mw, overlapped or folded Totals __ .... identification laboratory ___criteria _____ I a..;. observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5p /■= EDS spectrum conforming to laboratory holes or opaque areas identification cnteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 libera <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 nteraoctions) Anthophyllite Non-Asbestos Tremolite M = Matnx Non-Identified Actinolite NSD = No Structures Detected

CITY_21MC100_002863735

NYC-WTC_000211191