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TRANSMISSION ELECTRON MICROSCOPY <br />ANALYTICAL <br />Modified NIOSH 7402 Method <br />Contact: Don Litchfield Report No.: 084032 <br />Address: Del -Tech Geotechnical Support Date: Jun -17-10 <br />645 N. Yosemite Ave Date Received: Jun -10-10 <br />Oakdale, CA 95361 <br />Job Site / 5 <br />No. Total Samples Analyzed: <br />CLIENT SAMEPLE # B SAMEPLE LOCATION <br />Station B <br />Laboratory Sample # 1323-00001-002 <br />AIR FILTER DATA AIR PUMT DATA <br />Type MCE0.45um Time (min) 480 <br />Diameter (nun) 25 Flow Rate (lpm) 2.3 <br />Area (sq mm) 385 Volume (liters) 1104 <br />CALCULATED ASBESTOS <br />STRUCTURE CONCENTRATION <br />IDENTIFIED STRUCTURES <br />ASBESTOS OTHER Fibers Per CC Air >Sum Length <br />AMPH. AMBIG. NON -ASB. Width >0.25 um <br />ND ND < <br />IL ND <br />0.0009 <br />COMMENTS <br />No Asbestos Detected FILTER LOADING MODERATE <br />SAED PHOTO ID Vs. <br />TEM / ANALYTICAL PARAMETERS <br />Magnification: 10,000X ANALYTICAL SENSITIVITY <br />Grid Openings Scanned 40 Structures/sq mm 2.5 <br />Grid Opening Area (sq.mm) 0.0099 Structures/cc 0.0009 <br />Scan Area (sq.mm.) 0.4 <br />NOTATION KEY <br />Chrys. -Chry <br />sotile Asbestos <br />ND -None Detected <br />Amph. - Amphibole Asbestos <br />1 um =1 micron = 0.001 mm <br />Ambig. - Ambiguous ID <br />1 mm =1 millimeter <br />Non-Asb. - Non -Asbestos <br />1 cc =1 cubic centimeter <br />* - Effective values when sample has been remobilized. <br />ANALYST SIGNATURE <br />ASBESTOS TEM LABORATORIES, INC. 630 BANCROFT WAY, BERKELEY, CA 94710 (510) 704-8930 <br />www.asbestostemlabs.com With Offices in Reno, NV (775) 359-3377 <br />