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KLEINFELDER <br /> TABLE 3 <br /> COMPARISON OF LEACHING POTENTIAL OF MUNICIPAL LEACHATE,ACETIC ACID, <br /> AND CITRIC ACID ON A RESOURCE RECOVERY ASH SAMPLE* <br /> Concentration of Metals <br /> ug/l of the leachate (extract) <br /> Municipal Acetic Acid Citric Acid <br /> Leachate (TCLP) (WET) <br /> (Field Conditions) (Lab Conditions) (Lab Conditions) <br /> Metal 103 Days 18 Hours 48 Hours <br /> Arsenic 5.1 5 61 <br /> Cadmium 10.3 190 1,600 <br /> Chromium 30.4 12 1,000 <br /> Copper <315 1,006 1,900 <br /> Lead 22.2 50 29,000 <br /> Zinc 2,500 11,000 206,000 <br /> *Francis, C.W. - "Leaching Characteristics of Resource Recovery. Ash in Municipal Waste <br /> Landfills." Publication No.2456. Oak Ridge National Laboratory, Oak Ridge,Tennessee. <br /> 137-88-1663 <br />