NYC-WTC_000229142

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1808 Lab Group #: 7912 Filter Type / Filter Area: MCE 385 Lab Sample #: 13 Grid Opening Size: 0.01124 Client Sample #: 15 Area Examined: 0.04496 mm= GRJP BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 5/30/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length IDofStfuctufB Nor V EOS No (Nonadb F B C M ^=05 p >=5p Chrys Ampfttiote Nonasb Ambig?N0 No Coord Elements) ) <5u -------------- 1 Ac;?-

i j

Struct == o.5p > 5:1 Aspect Ratio Grid acceptance: Positive diffraction pattern properties conforming to <S0% undissotvec filter, overiapped or folded Totals latXMatory identtfication criteria observed <10% particulate coverage >50% coverage ale least 20 unfolded or overlapped grid squares <5% F B C M >5)j EOS spectrum informing to taboratory holes or opaque are^ identification criteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite B s Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous e = Glister i>3 intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Actinolite Non-Identified NSO = No Structures Defeclsd

CITY_21MC100_002902270

NYC-WTC_000229142