NYC-WTC_000202314

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1920 Lab Group #: 9210 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 11 Grid Opening Size: 0.01124 Client Sample #: 13 Area Examined: 0.04496 mm- GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 12/26/200

Analysis Performed By: MARK PEYSAKHOV

. GO, Structure Structure Type Length ID of structure N or 7 EDS ■ No Ambig/NV (Nonadb F B C M >=Q5p Chrys ‘ ,Amphibole Nonasb No Coord <5|j Eiements)

< 7 a- ' !

■ I

1 !'

Photo No. (trom 1 in b asbestos containing samples) Grid acceptance: Struct = > G.bu > 54 Aspect Ratio <50% undissolved filter, overlapped or folded Totals Ny= Positive diffraction pattern propedies corfcrming to <10% particulate coverage >50% coverage ate' laooratory identification criteria observed least 20 unfolded or overlapped grid squares <5% holes or opaque areas F B M 9= EDS spectrum conforming to laboratory identification criteria obseived Chrysotile amphiboles Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diame'.er apart Crocidolite Ambiguous ’ C = Cluster (>3 Intersections) Anthophyllite Tremolite Nop-Asbestos M = Matrix Actinolite Non-Identified MSD = Nc Siructures Detected

CITY_21MC100_011276465

NYC-WTC_000202314