NYC-WTC_000229332

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1800 Lab Group #: 8178 Filter Type / Filter Area: MCE 385 mm’ Lab Sample #: 12 Grid Opening Size: 0.01124 Client Sample #: 14 Area Examined: 0.04496 mm’ GRID BOX: Ication: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 6/19/02

Analysis Performed By: ROMAN PEYSAKHOV

GO. Structure Structure Length 10 of Structure Nor 4 EDS No >=05 p Mooasb (Nonadb F B C M Ctirys Amphbole AmttigffjD ,' j Noi Coord <5p Elemenis)

/Z p? JL i

Struct = > 0.5g > 5:1 Aspect Ratio Grid acceptance; ’/’Positivediffraction pattern properties conforming to <50% undiasolved filter, overlapped or foktad Totals laboratory toentiftcabon entena observed <10% particuiate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5m V= EDS spectrum conforming to laboratory hotes or opaque areas identrficafion criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amrpsite 8 = Bundle (<3 fibera <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremoltte \ M = Matra Non-Identified Actinolite NSD = No Structures Delected

CITY_21MC1OO_OOO491974 NYC-WTC_000229332