NYC-WTC_000208339

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1920 Lab Group #: 8759 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 1 Grid Opening Size: 0.01124

Client Sample #: 01 Area Examined: 0.04496 mm-

GRID BOX: 432^ Magnification: 20,000 GRID ID: # Grid Openings: 4 We Accelerating Voltage: Analysis Date: too KeV 8/25/02

Analysis Performed By: ROMAN PEYSAKHOV

• GC; structure Structure Type Length ID of Str jcture Norv EDS (Nonadb No F B C M >=05 p >=5p Ctirys Amphibole , Nonasb j Ambig/ND No Coord <5p Elements)

7 I !c

Struct = > 0.5p -> 5:1 Aspect Ratio Grid acceptance:

Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5u EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrys )tile AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluste' (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Non-Ident tied Actinolite NSD = No Structures Detected

CITY_21MC100_003021673

NYC-WTC_000208339