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A very desirable quality of any soil is a large capacity to <br />imbibe water during periods of precipitation. The A and B • <br />horizon soils appear to have this quality because saturation <br />percentages equal 58.5% and 61'%, respectively. This greater <br />sorptive property is probably attributable to higher organic <br />content and clay content. Samples 33 and 31 also show hid;:: <br />water saturation percentages of --55%, but they are interburden. <br />According to the litholo~y report (Figure 3, Section IV), <br />sample 33 (taken from 36 to 38-foot depth) is predominantly <br />shale with interbedded, very fine-grained sandstone. Sample 31 <br />(51 to 53-foot depth) is also predominantly shale, containing <br />weathered silts tone and fine-grained sandstone. The greater <br />amounts of shale in the tcoo samples are believed to be the <br />cause for higher saturation percentages. It follocas in other <br />portions of drill core G-59; cahere the interburden is <br />predominantly shale, the water saturation percentages are also <br />greater. Those portions of interburden consisting largely of <br />sandstone shoo a significantly lower tendency to imbibe c•~ater • <br />and have saturation percen~ages which range from 23% to 40%. <br />Electrical Condcctivit-; and pH Fesuits (l:l Extraction <br />Noca let us examine the data from pH and electrical <br />conductivity measurements made on water extractions from inter- <br />burden. First, extractions were carried out at tcao concentration <br />levels: <br />o A water-dry solids ratio of 1:1, by weight, at <br />room temperature. <br />• Saturated soil at room temperature. <br />Raco experimental. data for 1:1 extract's appear in Table IV. <br />Observe. that raw conductivity data are corrected for both <br />temperature and dilution factors. C orrected conductivity <br />• <br />