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Data from the lonE,itudinal river surrey in late l:o~~mber suggests that increases <br />~' in conductivity along the t;orth Fork study an a are due to ground water movecents <br />• into the ri•~•er and net Srem surface waters originating from the coal load out area. <br />Tf:is conclusion may or may not apply to other tir.,e periods oS the year. <br />In addition, there were several instances tthen apparent "slugs" of high con- <br />ductivity rater passed through the study area Srom abotire the control station. <br />This was only observed during the mid-July to October period, but may have occurred <br />at other tines, s i7ce samples kere taken only once per reek, Evidence of high <br />conductivity rater moving through the area xas also seen in previous reporting <br />periods. <br />• <br /> <br />3 13 <br />