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KLEINFELDER <br /> investigation found asbestos in all but the two "background" samples (SS-27 and SS-9) located <br /> near comers of the site. <br /> Three different asbestos fibers were detected at the J-M site: <br /> 1. Chrysotile Asbestos, which is a Serpentine, is white in bulk. Chrysotiles are long, <br /> curly, flexible, undivided fibers which are actually hollow, rolled up sheets which can <br /> be very small and have a density of 2.6 grams/cubic centimeter. <br /> 2. Amosite Asbestos, which is an Amphiboles, brown or tan in bulk and can be reddish if <br /> subjected to temperatures above 600 degrees F. Amosites are long, very straight fiber <br /> bundles, where individual fiber shapes could be straight or smoothly curved. On the <br /> average, Amosite fibers are larger in diameter than Chrysotiles. The average density of <br /> the Amosite fibers is 3.0 grams/cubic centimeter. <br /> 3. Crocidolite fibers are pale to very deep blue as bulk individual fibers. Crocidolites are <br /> long, very straight fibers which are larger in diameter on average and have a density <br /> range of 3.3-3.5 grams/cubic centimeter. <br /> 4.2 1991 SOIL SURVEY <br /> 4.2.1 Introduction and Background <br /> In 1991, a soil sampling was performed at J-M Mfg.. The results of this investigation <br /> provided additional information on the extent of surface asbestos. Kleinfelder prepared a <br /> workplan for this site characterization. The work plan, dated December 10, 1990 was _ <br /> submitted to the CVRWQCB and approved. The sampling occurred during the month of <br /> November 1991 and the CVRWQCB was provided with a summary report. This discussion <br /> summarizes the surface soil sampling aspects of the report. <br /> CR14-92-12 Page 10 of 39 24-220109-1309 <br /> Copyright 1992 Kleinfelder, Inc. <br />