NYC-WTC_000228632

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE V piuiiie (liters): 1800 Lab Group #: 7538 Filter Type ? iter .Area: MCE 385 mm* Lab Sample #: 11 Grid ('• p tiiiig Size: 0.01124 Client Sample #: 13 Alva \ a mined: 0.04496 mm* GRID BOX: ■■iiili cation: 20,000 GRID I D : Accelei aiiiig V oltage: 100 KeV U Grid Openings: 4 Ati..ivsi.s Date: 4/25/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length '■'rjctiiro N or V EDS No (Nonadb F 8 ' C M >=05 p >=5pi CliryS I Amphi: .'ionasb i Ambg/ND No Coord <5p E'emenis) --------- 1-------

■— i—r T + i 1------ 1 I I

i L i + 4-

i

TI + Struct = X) 5p >5:1 .Aspect Ratio Gna acceptance: Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals laboratory ide 'tiRcation criteria observed <10% particulate coverage >50% coverage ale leas; 20 unfolded or overlapped grid squares <5% EDS spectrum conforming to laboratory holes or opaque areas P B C M ’5p

identification cntena observed ■

.MPHIBOLES ;b..le i F = Single Fiber .Amosite S = Bundle (<2 fibers <1 libe: diameter apart Crocidolite C = Cluster (>3 Intersections! anthophyllite [ Not ■'C.iOS i Tremolite M = Matnx ' Non Actinolite I NSD = No Str jctuies Detected

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NYC-WTC_000228632