NYC-WTC_000222597

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE \T)it!!ne (liters): 2264 Lab Group #: 7539 Filter Type ' Filter Area: MCE 385 mm^ Lab Sample #: II Grid I. t;i tiiim .Size: 0.01124

Client Sample #: 14 Are;, ilx ami lied: 0.04496

GRID BOX: ■M .yiiitication: 20,000 GRID ID: Acccler Voltage: 100 KeV # Grid Openings: 4 A .uiv.sis Date: 4/25/02

Analysis PerILrmed By: MARK PEYSAKHOV

! GO.. Structure Structii.i-e Type Length ID Jiiuciure Nor y EDS No ^S05p (Nonadb F E ■ C M >==5iJ Chrys ’ Amphi. Nonasb Ambig/ND ; No Coord <5m i Elements)

z Jx

I

Struct = >0.5p >5:1 Asptci Ratiu Grid acceptance; >1= Positive diffraction pattern properties confor: rg to <50% undissolved filter, over apped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapced grid squares <5% F B C M >5m ■/= EDS spectrum conforming to laboratorv holes or opaque areas _ identification criteria observed (" ■ -Dtilc AMPHIBOLES ibdTT F = Single Fiber Amosite —L B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite A:- C = Cluster (>3 Intersections) Anthophyllite \..K .•xUiS ■ Tremolite M = Matrix Actinolite NSD = No Structures Detected

CITY_21MC100_002918229

NYC-WTC_000222597