NYC-WTC_000202310

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: WCBOE Volume (liters): 1920 Lab Group #: 9210 Filter Type / Filter Area: , MCE 385 mm- Lab Sample #: 4 Grid Opening Size: 0.01124 Client Sample #: 06 Area Examined: 0.04496 mmC GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: - 12/26/200

Analysis Performed By: M.ARK PEYSAKHOV

GO. Structure Structure Type • Length ID of Structure N or 7 EDS No >=05 p ;>=5p (Nonadb F B M Chrys Amphibole Nortasb Ambig/ND No Coorc <5p Elements)

Y F2 a-

Y-

H

Photo No. (from 1 in b asbestos containing sampiea) “ Grid acceptance: ' Struct > 0.>.p > 5. t Aspect Ratio - undissolved filter, overlapped or folded Totals -A Positive diffraction pattern propertiesconforming to <10% particulate coverage >50% coverage ats laboratory identification criteria observed least 20 unfolded oroverlapoed grid squares >5u <5% holes or opaque'areas F B i C M V= EDS spectrum oonforming to- laborator/ identification criteria obsenred Chrysotile AMPHIBOLES F = Single Fiber Amphibole Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 intersections) Anthophyllite Tremolite Non-Asbestos M = Matrix Actinolite Non-Identifled NSD = No Structures Detected

CITY_21MC100_011276458

NYC-WTC_000202310