NYC-WTC_000205903

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: Warren & Panzer Volume (liters): 1330 Lab Group #: 8203 Filter Type / Filter Area: MCE 385 miW Lab Sample #: 4 Grid Opening Size: 0.01124 Client Sample #: 04 Area Examined: 0.06744

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: too KeV # Grid Openings: 6 Analysis Date: 6/21/02

Analysis Performed By: ROMAN PEYSAKHOV

GO structure Structure Type Length ID of Structure Norv EDS No >=05 |j :>=5iJ (Nonadb F B C M Chrys Amphibole Nonasb Ambig/ND Coord <5m Elements)

3 f Q If (( b </ 7

69 —

Struct = > 0.5)1 > 5:1 Aspect Ratio Grid acceptance: J = 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 >5m ^/= EDS spectrum conforming to laboratory holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite 8 = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Non-Identified Actinolite NSD = No Structures Detected

CITY_21MC100_002991530

NYC-WTC_000205906