NYC-WTC_000218065

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): i 920 Lab Group #: 6852 Filter Type / Filter .Area: MCE . mm- Lab Sample #: 4 Grid Opening Size: 0.0!! 24

Client Sample #: 4 Area Examined: 0,04496 rnm-

GRID BOX: Magnification: 20.000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 2,-28/02

Analysis Performed By: ROMAN PEYSAKHOV

GO, Structure Structure Type Length ID of Structure N or 4 EDS No F B C M >=05 p i>=5(j Chrys Amphibole Nonasb TYmolg/N^l , _ No Coord <5u I I Elements) -

■

-7

20

Struct = > 0.5p > 5:1 Aspect Ratio Grid acceptance: V= Positive diffraction pattern properties conforming to <50% undissolved filter, overiapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ale least 20 unfolded or overiapped grid squares <5% ! F i B ! C : M ' >5' V= EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile I AMPHIBOLES Amphibole ) F = Single Fiber Amosite 8 = 3undle (<3 fibers <" fiber diameter apart Crocidolite .Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos rremolite M = Matrix Actinolite Non-ldentified NSD < No Structures Detected

CITY_21MC100_000465827 NYC-WTC_000218065