NYC-WTC_000223784

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name; NYC BOE Volnme (liters): 1920 Lab Group #: 7590 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 1 Grid Opening Size: 0.01124 Client Sample #: 01 Area Examined: 0.04496 mm^ GRIP BOX: Magnification: 20,000 GRUHD; Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Pate: 4/30/02

Analysis Performed By: MARKPEYSAKHOV

."GO. Structure Structure Type Length ID of Structure Nor V EDS No (Nonadb F B C M >=05 fi :>=5p Ctirys Amphibole Nonasb Ambig/ND i No Coord <5fj Elements)

Struct = > 0.3ft > 5; I Aspect Ratio Grid acceptance: Positive diffracddn pattern properties coriforming to <M%undissotved fitter, overtaj^ or folded Totals laboratory identification criteria observed <10% particuiata coverage >50% coverage ate least 20 unfolded or overtopped grid squares <5% F B C M >5|j >/= EOS specirm conforming to laboratory holes or opaque areas idantificatton criteria observed Chrysotile i AMPHIBOLES Amphibole F = Single Fiber I Amosite B > Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C 3 Cluster (>3 Intersections) : Anthophyfilte Non-Asbcstos Tremolite M^Matrix Non-Identified Actinolite NSO = No Structures Detected

CITY_21MC100_002919924

NYC-WTC_000223784