NYC-WTC_000219287

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Voluilie (liters): 1800 Lab Group 7538 Filter Type, KI ter Area: MCE 385 mm^ Lab Sample #: 11 Grid do.'iiing Size: 0.01124 Client Sample #: Area .examined: 0.04496 GRID BOX: ?»h.»,iiiti cation: 20,000 GRID ID: Aceeleratiitg Voltage: 100 KeV # Grid Openings: 4 Aii;.lvsis Date: 4/25/02

Analysis Performed By: MARK PEYSAKHOV

GO. I Structure Structure Type Length ID or 'Structure N or v EDS i No (Nonadb F B ' C M '=05 M >=5j Chrys Amphii; •. .Nonasb Ambig/ND No Coord I <5|J Elements)

I i

T 1 I r~i Struct = > l).5p > S: I .Aspect Ratio Gria acceptance: 4= Positive diffractron pattern properties conforming Io <50% undissolved filter, overtapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate leas; 20 unfolded or overtapped grid squares <5% F B C M >5|j n/= EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed -■/ile ■ '.iPHlBOLES ■ .:b,.le F = Single Fiber Amosite 6 = Bundle (<3 fibers <1 libe: dianieler apart Crocidolite C = Cluster (>3 Intersections! A^nthophyllite Noi - • - ic.-ios Tremolite M = Matrix Actinolite Nor. •.••■ed NSO = No Structures Detected

CITY_21MC100_002879629

NYC-WTC_0002 19287