NYC-WTC_000228612

NYC 9/11 Public Portal Document

TEMAsbeMoslairlCountSheet Client Name; NYC BOE Volume (liters); 1848 Lab Group #; 7513 Filter Type / Filter Area: MCE 385 mm" Lab Sample #; 8 Grid Opening Size; 0.01124 Client Sample#; 10 Area Examined; 0.04496 mm-

GRID BOX; Magnification; 20,000 GRID H); Accelerating Voltage; 100 KeV # Grid Openings; 4 Anaivsis Date; 4/23/02

Analysis Performed By; MARK PEYSAKHOV

GO. Structure Structure Type Length ID of Structure Nor V EDS No (Nonadb i F B C >=05 p :>=5p Chrys [Amphibote Nonasb Ambig/ND No Coord <5p Elements) j

Si?- sTg?

—___

Struct = >0.5p >5:1 Aspect Ratio Grid acceptance: 4- Positive diffraction pattern properties conforming to <50% undissolved fitter, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 ur^fotded or overlapped grid squares <5% F B C M >5p EDS spectrum conforming to laboratory twles or opaque areas identification (riteria observed Chrysotile AMPHIBOLES Amphibole F = Single Fiber Amosite B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllile Non-Asbestos Tremolite M = Matrix Aebnolite Non-Identified NSD = No Structures Detected

CITY_21MC1OO_OO29O1129

NYC-WTC_000228612