NYC-WTC_000228754

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (lit er si: 1800 Lab GroHp #: 7625 Filter Type / Filter Area: MCE 385 Lab Sample #: 15 Grid Openiog Size: 0.01124

Client Sample #: 17 Area Examined: 0.04496

GRID BOX: Magnification: 20 000 GRIP IP: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Pate: 5/4/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length ID of Struedrre N or V EDS No (Nonadb F B C M >=06 p >=5p Chrys Amphibole Nonasb Ambig/NO i No Coord <5u Elements)

_ ___ g Ct -S--------------

Struct = > 0.5g >5:1 Aspect Ratio Grid acceptance: ■/= Positive diffraction pattern prcperties conforming to <60% undissolved fitter, overlapped or folded Totals laboiatoiy identification criteha observed <10% particulate covarage >50% coverage ate

EDS spectrum conforming toiaboratory least 20 unfolded or overlapped grid squares <5% F B c M >5u iKJles or opaque areas identification criteria observed Chrysotile .AMPHIBOLES Amphibole F = Single Fiber Amosite a = Bundle (<3 fibers <1 fiber diameter apart Croddoiite Ambiguous C = Cluster (>3 Intersections! An.thophyllite Non-Asbestos Tremolite M : Matrix AcEnolite Non-Identified NSD = No Structures Detected _ 1

CITY_21MC100_002901624

NYC-WTC_000228754