NYC-WTC_000212589

NYC 9/11 Public Portal Document

TCM Asbestos (air) Count Sheet <?lient Name: NYC BOE Volume (liters): 1928 Lab Group #: 7336 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 6 Grid Opening Size: 0.01124 Client Sample #: 06 Area Examined: 0.04496 mm-

<;RID BOX: Magnification: 20,000 GiRID ID: Accelerating Voltage: 100 KeV ;/ Grid Openings: 4 Analysis Date: 5/23/02

Analysis Performed By: roman peysakhqv

GO Structure Structure Type Length ID of Structjre N or y ED3 (Nonadb No F B C M >=0571 i>=5p Chrys Amphibole Nonasb Ambig/ND No Coord <5p Elements)

gs dE —I

.'.truct - > 0.5p > 5:1 Aspect Ratio Grid acceptance: A = Positive diffraction pattern properties conforminq to "50% undissolved filter, overiapped or folded Totals ,4-,„.ni„,.i____ laboratory identification observed' critena _____ <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M| >5m s = EDS spectrum conformino tc laboratory holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES Amphibole I- - Single Fiber Amosite 13 - Bundle j<3 fibers <1 fiber diameter apart Crocidolite Ambiguous 2 = Cluster (>3 Intersections) Anthophyllite Non-Asbestos T remolite M = Ma'.rix Non-Identified Actinolite \SD = Mo Structures Detected

CITY_21MC100_002867309

NYC-WTC_000212589