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January 19, 1983 <br /> Project 116-1.3 <br /> _ 4 _ <br /> TABLE 4 - LEACHATE ANALYSIS (Continued) <br /> South end of Trench #3 <br /> Cr+3 <.O1 <br /> Cr+6 <br /> Zn <.Ol <br /> Ni .�3 <br /> Cd <.001 <br /> Cu <.05 <br /> Ba <0.5 <br /> Sr 61.5 <br /> Ca 36.6 <br /> Mg <1.0 <br /> NO3 685 <br /> Na 1440 <br /> Note: Concentration-in mg/l unless otherwise noted <br /> < = "less than". <br /> Collected interference prevented representative analysis. <br /> Groundwater samples were collected from Monitoring Wells #7 and #9 on <br /> January 10, 1983. Prior to sampling, each well was bailed to remove a <br /> volume of water equal- to five well volumes. The sample was then collected . <br /> and filtered through a #42 Whatman Filter Paper to remove suspended solids. <br /> The sample was then split and half of each sample was fixed with nitric acid <br /> to preserve for metal ions. <br /> These sampling methods and subsequent analyses are in conformance with <br /> "Standard Methods for the Examination of Water and Wastewater". Analyses <br /> were performed by- California Water Labs of Modesto, California, a water <br /> laboratory certified by the California Department of Health Services. Table 5 <br /> summarizes all groundwater observations and analyses at Monitoring Wells <br /> #7 and #9, <br /> Tetae_ lssociates <br />