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<br />refuse. However, this was again due to one sample which had a <br />high boron concentration (224.4 ppm). This high boron content <br />approaches toxic levels for some plants; however, its relative <br />insolubility at higher pH's may prevent it from being absorbed at <br />hazardous concentrations (pH values were 8.53 and 8.05 and <br />texture of the refuse was a sandy loam). Bradford (1966) <br />indicated that normal soils ranged from 2 to 100 ppm boron. <br />Except for the old refuse material from one sample which had a <br />high boron content, the refuse materials from other mines were <br />within a normal range. <br /> The range in chloride content of topsoil (0.001 to 0.01 <br /> meq/100g), new refuse (.001 to .313 meq/100g), and old refuse <br /> (.001 to .120 meq/1008) shows high variability among sampling <br /> sites. A trend towards decreasing chloride content as a function <br /> of refuse material age appears to occur. However, smal l sample <br /> size and large sample variation prohibit any positive conclu- <br /> sions. <br />2.3 Texture <br />Sieved refuse material contained a greater percentage of <br />sandy coarse fractions and less silt and clay than adjacent <br />topsoil. No difference in the distribution of soil particle <br />fractions was found between new refuse and older refuse material. <br />2-S <br />