NYC-WTC_000208316

NYC 9/11 Public Portal Document TEM Asbestos (air) Count Sheet Client Name: NYC BOE Lab Group #: 8759 Lab Sample #: 14 ‘Client Sample #: 14 S70 Filter Type / Filter Area: Volume (liters): 1920 MCE 385 mm? Grid Opening Size: 0.01124 Area Examined: 0.04496 mm? GRID BOX: Magnification: 209 909 GRID ID: yy ALO Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 8/25/02 Fea) Analysis Perfo-med By: KR — ROMAN PEYSAKHOV ' GO. Structure Structur2 Type Length ID of Structure Nor Vv (Noned poe n 7 - ona No FIBICIM! >#05u >=5 Chrys Amphibole Nonasb Ambig/ND " No Coord <5 Hu y L Elements} f f= WZ Z ZZ GY / tg | ao ~ . | 1 + r | | | | | | | | [| { T | | i j | | | : : i , \ 1 i | | Struct = > U.5u > 5.1 Aspect Ratio Grid acceptance 1 ppc <50% undissolved filter, overlapped or folded Totals V= Positive diffraction pattern properties conformin, to <10° , particulate coverage >50% coverage ate — . . va () laboratory identification criteria observed least 20 unfolded or overlapped grid squares <5% FTBTC)]M Sip v= EDS spectrum coniorming to laboratory holes or opaque areas . identification criteria observed ee Chrysotile ’ F = Single Fiber Amosite : : | 8 = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C= Cluster (>3 Intersections) | Anthophyllite Non-Asbestos te ; Tremolite Identified - M= Matrix | Actinolite Non-Identifie NSD = No Structures Detected NYC-WTC_000208316 CITY_21MC100_003021636 00 POE seals i te