NYC-WTC_000229346

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1808 Lab Group #: 8214 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 4 Grid Opening Size; 0.01124 Client Sample #: 06 Area Examined; 0.04496 mm* GRID BOX: Magnification; 20 000 GRID ID; Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 6/22/02

Analysis Performed By; mark: peysakhov *■-

GO. Structure Structure Type Length to of structure Nor v EDS (Nonalb No F 8 C M >“05 p :>=5p Chrys Amphiboie Nonasb AmbigW No Coord <5u Etemencs)

Struct = > 0.5p >5:1 Aspect Ratio Grid acceptance.. Positive diffraction pattern propertiBs confonrtng to <S0% undissotved filter, overlapped or folded Totals laboratory idenbfication ertteria observed <10% pardculate (average >50% coverage ate least 20 unfoWed or overlapped grid squares <5% F B C M >5m 4= EDS spectrum conforming to laboratory holes or opaque areas identificatkm ertteria observed Chrysotile amphiboles Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocirdolile Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M^Matnx Actinolite Non-Identified NEO = No Structures Detected

CITY_2IMCl00_000492014 NYC-WTC_000229346