NYC-WTC_000207946

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name NYC BOE Volume (liters) 1920 Lab Group # 9088 Filter Type / Filter Area MCE 385 mm^ Lab Sample # 3 Grid Opening Size 001124

Client Sample # Area Examined 0 04496 mm^

GRID BOX Magnification 20,000 GRID ID Accelerating Voltage too KeV # Grid Openings 4 Analysis Date 11/11/02

Analysis Performed By ROMAN PEYSAKHOV

GO Structure Structure Type Length ID of Structure Nor\ EDS (Nonadb No F B C M >=05 p >=5(J Chrys Amphibole Nonasb Ambig/ND <5p Elements)

3If /(

Photo No (tram 1 n 5 asbestos containing samples) Gnd acceptance Struct = > 0 5p >51 Aspect Ratio <50% undissolved filter overlapped or folded Totals a/= Positive diffraction pattern properties conforming to <t0% particulate coverage >50% coverage ate laboratory identificabon cntena observed least 20 unfolded oroveriapped grid squares <5% F B C M >5|j holes or opaque areas ^= EDS spectrum conforming to laboratoiy Chrysotile Identification cntena observed AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matnx Non-Identified Actinolite NSD = No Structures Detected

CITY_21MC100_003017386

NYC-WTC_000207946