Ambient air sampling report Book Two for 105 Duane Street,

NYC 9/11 Public Portal Document

I TEM Asbestos (air) Count Sheet I Client Name: ATC Volume (liters): 1300 Lab Group #: 6159 Filter Type / Filter Area: MCE 385 mm

II Lab Sample #: Client Sample #: 1 04 Grid Opening Size: Area Examined: 0.01124 0.06'44 mm=

I GRID BOX: GRID ID: ? f % Magnification: Accelerating Voltage: 20,000 100 Key # Grid Openings: 6 Analysis Date: 1220/01 I Analysis Performed By:

I GO Structure Structure Type i MARK PEYSAKHOV

Length ID of Structure N or v EDS No (Nonadb

I No Coord I F B C M >=05 a <5u I >=5u Chrys Ampniboie Nonast I AmoiglND Elemental

r

r 623 ---

I ! I l

I I I I I n

Struc: _ > 0.5 >5. I Aspect Ratio Grid acceptance: v= Positive diffraction pattern properties comorming to <50% undissolved filter, ovenapped or folded Totals laboratory Identification critena ooservea <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5%e F B C M >5u v= EDS spectrum conforming to laboratory holes or opaque areas dentification criteria observed Chrvsotiie AMPHIBOLES Amphibole I = Single Fiber Amosite Ambiguous n

B = Bundle 1<3 fibers < fiber diameter apart Crocidolite = Cluster (>3 Intersections) Anthophyllite Von--asbestos I M = Matrix NSD = No Structures Detered Tremolite Actinolite Non-Identified

NYC-WTC 000104478