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Accredited by <br /> U.S.Dept.of C mmerce <br /> Now <br /> ASBESTOS TEM LABORATORIES, INC NVIAP IAB CODE 101891-0 <br /> CA DOHS ELAP <br /> Oct 19!2008 <br /> Bill Johnston , <br /> Shaw Environmental& Infrastructure <br /> 2880 Zanker Road,Suite 101 <br /> San Jose.CA 95133 <br /> RE: LABORATORY JOB# 1199-00007 <br /> Transmission electron microscopy analytical results for 5 air sample(s). <br /> Job Site: Forward Land Fill <br /> Job No.: Not listed on CoC <br /> Enclosed please find results for the TEM analysis of one or more air samples.The analytical procedures were <br /> performed according to the NIOSH 7402(Revision#1) method_ Prior to analysis, samples are checked for damage <br /> and disruption of the chain-of-custody seal. Samples are then logged-in,each given a unique laboratory number,and <br /> a hard copy containing all pertinent information is generated. This,and all other relevant paper work are kept with <br /> each sample throughout the analytical procedures to assure proper analysis. <br /> Preparation of air filter cassettes is performed within a HEPA filtered,Class 100 air,laminar flow clean bench <br /> environment. Cassettes are wet-wiped to remove any external contamination prior to placement into the clean bench <br /> area. Sections of the filters are removed,placed onto glass microscope slides,and collapsed in acetone vapor. The <br /> collapsed filters are plasma etched,removing the surface of the filter to a depth often percent of its original thickness, <br /> then carbon coated. The filters are further sectioned and placed carbon side up onto 200-mesh copper TEM sample <br /> grids in an acetone xvick washer to remove filter material. The grids are placed into labeled containers and loaded into <br /> the microscope for analysis_ <br /> TEM analysis is performed on a Philips EM-300 transmission electron microscope operating at 80 or 100 kV,with a <br /> magnification as indicated on the analytical report. A known area of the specimen surface is scanned for fibrous <br /> structures_ All structures exhibiting an aspect ratio greater than or equal to 3 to 1.and a length greater than or equal <br /> to 5.0 un are subjected to detailed morphological and selected area diffraction(SHED)analysis. Structures indicated <br /> as asbestos,or potentially asbestos,are further analyzed by energy dispersive X-ray(EDX)analysis as needed_ <br /> Analysis continues until 100 asbestiform structures are found,or an analytical sensitivity of 0.001 structuresec is <br /> attained,or 40 grid openings are analyzed_ Data is compiled into a standard report format and subjected to a thorough <br /> quality assurance check before the information is released to the client. <br /> Sincerely Yours, <br /> Laboratory Manager <br /> ASBESTOS TEM LABORATORIES,INC- <br /> ---These results relate only to the samples tested and must not bereproduced,except in full,with the approval of the <br /> laboratory. This report must not be used to claim product endorsement by N V LAP or any other agency of the U.S_ <br /> Government. <br /> 630 BANCROFT WAY BERKELEY,CA 94710 (510)704-8930 FAX(510)704-8429 <br /> www.asbestostemiabs.coni With Offices in Reno, NV(775)359-3377 <br />