NYC-WTC_000201143

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Voliiiiie (liters): 1805 Lab Group #: 7890 Filter Type / 1 liter Area: MCE 385 mm* Lab Sample #: 15 Grid Opening Size: 0.01124

Client S imple #: 15 Areii Examined: 0.04496 mm*

GttID BOX: ]\. . iiification: 20,000 GRIDIh: Accelerin i : g Voltage: 100 KeV # Grid (openings: 4 11 lysis Date: 5/28/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Type Length ID Q' Tructure NorN EDS No (Nonadb F B C M >=05 p. >=5)j Chrys Amphibu- Nonasb Ambig/ND No C>- rd <5p Elements)

i-T 7/^

Struct = > .-5p >5:1 Aspect Ratio Grid acceptance: Positive c fraction pattern properties conforming to, <50”/o undissolved filter, overlapped or folded....... Totals laboratory ic- tification criteria observed <10 '/o,particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5u </= EDS spe ■'um conforming to laboratory Fok 3 or opaque areas identificatior neria observed ( sQtile .MPHIBOLES A iibole F = Single F :r Amosite • B = Bundle fibers <1 fiber diameter apart Crocidolite Al. 3UOUS

C = Cluster intersections) Anthophyllite Non-., icstos M = Matrix Tremolite Actinolite Non-1.:, tified NSO = No I. .lures Detected

NYC-WTC_000201157