NYC-WTC_000207130

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Voluine (liters): 1920 Lab Group #: 7851 Filter Type / Filter Area: MCE . 385 mm^ Lab Sample #: 15 Grid Opening Size: 0.01124 Client Sample #: 15 Ar Vil Examined: 0.04496 mm^ GRID BOX: A .' .Bonification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 A ii-.i lysis Date: 5/2-5/02

Analysis Performed By: MARK PEYSAKHOV

■ GO. Structure Structure Type Length ID of Structure N or •/. EOS . -No (Nonadb- F B. C M >=05 M ~ . >=5m Chrys AmphioAfe l_ ;Nonasb Ambig/ND-. ■ No' Coord <5p Elements)

=7,-

■'-'A

I i?’.-

/

■

■ I

?■ Struct = > 0.5p > 5:1 Aspect Ratio Grid acceptance: <50% undissolved filter, overlapped or folded ■. '■ Totals-.-: '---AY-j-A- ' 'J= Positive diffraction pattern properties conforming to < laboratory identificatjon criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5m ./'■ ’/= EOS spectrum conforming to laboratory holes or opaque areas . identification criteria observed ;i .'sotile AMPHIBOLES i: liibole F = Single Fiber Amosite , B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite A.::. igUOUS

C = Cluster (>3 Intersections) Anthophyllite Non- .t-bestos i Tremolite M = Matrix Non-., itified Actinolite NSD = No Structures Detected

CITY_21MC100_003014671

NYC-WTC_000207130