NYC-WTC_000196100

NYC 9/11 Public Portal Document

TEM Asbestos fair) Count Sheet sample area analyzed ’—

Client Name GCI Environmental Advisory, Inc. Job#: 201092023 Volume (liters): 2 640.0 Lab Sample #: 16 Filter Type / Filter Area: MCE 385 mm2 Client Sample #: 140-916- 16 Grid Opening Size o. 01000 Received: 09/17/2001 02:10:00 Area Examined 0.04000 mm2 Date Analyzed: 09/17/2001 Magnification 20,000 Scope #: Accelerating Voltage 100 KeV

Grid Analysis Performed by;

Length Width h Aleksandr Barengolts Location Fiber Fiber Type Morphology EDS Orient. SAED Photo Opening pivi pM D4-4/3F i NSD D4-4/3G 2 NSD D4-4/3H 3 NSD D5-5/4C 4 NSD

NSD: No Asbestos Structures Detected Comments Structure Density Concentration Total Grid Openings; (str/mm2) (str/cc air) Grid Evaluation 4 Chrysotile Asbestos Structures: 0 <25 <0.0036 Grid Openings Covered > 50% Amphibole Asbestos Structures 0 <25 <0.0036 Intact Grid Opening > 50% Asbestos Structures >=5 microns 0 <25 <0.0036 Undissolved Filter < 10% Total Non-Asbestos Structures; Folded Replica < 50% Total Asbestos Structures: 0 <25 <0.0036 3 Filter Loading < 10 Analytical Sensitivity; 25 3 Particulate Even

CITY_DEP_WORBY_CANNATA_SUBP_000007146

NYC-WTC_000196100