NYC-WTC_000228877

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume filters); 1808 Lab Group 7723 Filter Type / Filter Area: MCE 385 mm- Lab Sample #: 3 Grid Opening Size; 0.01124 Client Sample #: 07 Area Examined; 0,04496 mm- GRID BOX: Magnification: 20,000 GRIP ID; Accelerating Voltage: too KeV # Grid Openings: 4 Analysis Date: 5/12/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length to of Structure A or v EDS I No (Nonadb F 9 C M >=05 p >=5p Ctirys Amphibole Monasb Airdiig/ND No Coord <su Eiemebts) i

4^ CT f

1 j

Struct = > 0.5p > S: I Aspect Ratio Grid aocsptance.' Posifwe difiraction pattern properties conforming to <50% undssoved filter, overlapped or folded Totals lai»ratof> identification criteria observed <10% particufate coverage >50% coverage ate least 20 unfolded or ovedapped grid squares <5% F B C M ■ >5|j <= EOS spectrum conforming to (abotatoty holes or opaque areas identlfcaPon aitsria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (< fibers <1 fiber diameter epart Crocidolite Ambiguous C = Cluster (>3 Intersections | Anthophyllite Non-Asbestos Tremolite M = Matrix Actinolite Non-ldcntified 1 USD = No Slruclures Detected

CITY_21MC100_002901830

NYC-WTC_000228877