NYC-WTC_000208240

NYC 9/11 Public Portal Document

T EM Asbestos (air) Count Sheet Client iSame: NYC BOE Volume (liters): 1920 Lab Group #: 882S Filter Type / Filter Area: MCE 385 mm- i Lab Sample #: 15 Grid Opening Size: 0.01124

! Client Sample #: 15 Area Examined: 0.04496 mm- GRID BOX: iMapnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV Grid Openings: 4 Analysis Date: 9/10/02

Analysis Performed By: MARK PE\'SAKHOV

GO Structure StrjctL/e Type Length ID of Structure \ or v EDS No >=05 p (Nonadb i F B C M >=5)J Chrys Amphibole Nonasb Ambig/ND No Coord <5p Elements) ----------- 1

Struct - :■ O,5li -> oil Aspect Ratio Grid acceptance

'1= Positive diffraction pattern properties conform tg to <50°'o undissolvec filter overlapped or folded Totals laboraion/ identification criteria observed <10% padiculate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% 1 F B i C ) M • >5u \ = EC'S spectrum conforming to laboratory holes or opaque areas L ■ iaeniification criteria observea Chrysotile AMPHIBOLES Amphibole i F = Single Fiber Amosite B = Bundle ;<3 fibers <1 fiber diameter apart Crocidolite Ambiguous i C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos i Tremolite M = Matrix Actinolite Non-Identified i NSD = No Structures Detected

CITY_21MC100_003021219

NYC-WTC_000208240