Ambient air sampling report Book Two for 105 Duane Street,

NYC 9/11 Public Portal Document

TEMI Asbestos (air) Count Sheet Client Name: ATC Volume (liters): 1300 Lab Group #: 5954 Filter Type! Filter Area: MCE 385 mm= Lab Sample #: 16 Grid Opening Size: 0.01124 Client Sample #: H-S Area Examined: 0.06-44 mm= GRID BOX: _,_ Magnification: 20.000 GRID ID: _/ _ Accelerating Voltage: 100 Key # Grid Openings: 0 Analysis Date: 11.23,01

Analysis Performed By: ROMAN PEYSAKHOV

GO j Structure Structure Type Length C of Structure N or v _DS No F B C Ni >=05 N Amoniooie (Nonadb >=5u Chrvs Nonasq Amoig/NC No Coord j <5u Eiementsl / J2 c~ I

L;

Struct = > 0.5µ > 5:! Aspect Ratio Grip acceptance: ~ = Positive diffraction oa[tem prgoerties conforming ro <50% undissolved filter. overlaccea or to;dec Totals aooratory iaennfication criteria ooserveo <10% particulate coverage >50% coverage ate least 20 unfolded or ovenappea gna squares :5% F B v= EDS spectrum contorming :o iaooratory boles or opaque areas C 1 :~1 'Su aentification cntena ooserrec Clu•vsortle -A,YIPHIBOLES Ampiitbole F = Single Fiber Amosite B = Bundle (<3 fibers =' fiber diameter span Crocicolite Ambiguous i C = Cluster i>3 Intersections; Anthopnvilite Non-Asbestos Tremolite M = Matrix Actinolite Non-ldenttned NSD = No Structures Detectec

NYC-WTC 000104456