NYC-WTC_000223674

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (Titers): 1920 Lab Grout) #: 7371 Filter Type / Filter Area: MCE 3S5 mm- Lab Sample #: 4 Grid Opening Size: 0.01124

Client Sample #: 04 Area Examined: 0.04496 rnm-

GRID BOX: Magnifieation: 20.000 GRID ID: Accelerating Voltage: 100 Ke\' # Grid Openings: 4 Analysis Date: 4 10:02

Analysis Performed By; MARK PEVSAKHOV

GO Structure Structure Type Length ID of Structure \ or v No ■ra:: F B C M >=05 u >=5|j Chrys j Amptuboie Nonasb : Ambig/NC I Mo Coord <5tJ ------ 1--------- i I -------------------------------- r I

Struct > O.5)j >5:1 Aspect Ratio Grid acceptance:

\'= Positive diffraction pattern properties conlorming to <50% undissolved filler, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or ovenapped gno squares <5% ": i F ; B ' C M v= EOS spectrum conforming to laboratory holes or opaque areas t Identification criteria observed , Chrysotile AMPHIBOLES Amphibole : - = Single riber Amosite .Anibigiioiis 3 = Bunaie i<3 fibers <1 fiber diameter apan Crocidolite C = Cluster (>3 Intersections! Anthophyllite i Non-Asbestos i Tremolite M = Matnx Actinolite j Non-IdeiitiFiei.i ' NSD = No Structures Detected

CITY_21MC100_002919726

NYC-WTC_000223674