NYC-WTC_000202890

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: ATC Volume (liters): 3600 Lab Group #: 9035 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 38 Grid Opening Size: 0.01124 Client Sample #: 38 Area Examined: 0.24728 mm^ GRID BOX: Magnification: 20 000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 22 Analysis Date: 10/29/02

Analysis Performed By: ROMAN PEYSAKHOV

: GO. Structure Structure Type Length ID of Structure NorN EDS ! “

No (Nonadb F B C M >="05 p :>-5p Chrys Amphibole Nonasb Ambig/ND Elements) j No \ Coord <5m

Z j& 51 17

2*

Z 5-- A 7^'/^ .EVE /3 6 / 4 2-

S3 /7i, i E 7 ^tcl

; 1 Photo No, ifrom 1 in 5 asbestos containing samples) Grid acceptance: Struct = > 0.5(j .> 5:1 Aspect Ratio <50% undissolved filter, overlapped or 'olded Totals v= Positive diffraction pattern properties conforming to <10% particulate coverage >50% coverage ate laboratory identification criteria observed least 20 unfolded or overlapped grid squares <5% r F B C M i >5u holes or opaque areas N= EDS spectrum conforming to laboratory Chrysotile idenrificarion cnteria ooserved AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous ! i C = Cluster (>3 intersections) Anthophyllite Non-Asbestos ] T remolite M = Matrix Non-Identified i ; Actinolite NSO = No Structures Detected

CITY_21MC100_003069471

NYC-WTC_000202927