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<br /> <br /> <br />ROCKY IZ.ATS SOIL PLUTONIUM~92°0 SURVEYS FROM 1970 TO 1991 <br />Graph 6 i;; a comparison between 1989 1/4 inch sampling depth, 1991 5-cm sampling depth and <br />1991 1/4 inch sampling depth. <br /> <br /> <br /> <br /> <br />C <br />r <br /> <br /> <br /> <br />L <br /> <br /> <br /> <br />J <br />CDH SOIL PLUTONIUM 239+240 SURVEY DATA <br />COMPARISON OF 1989 AND 1991 DATA <br />1881 Scm 1Bp11/°' <br />A <br />t~y~0 <br />[~ <br />1 <br />SUBSECTORS <br />SU&SEG?ORS <br />Graph 6 <br />Map 3 shows the sub-sectors of Sectors 1 and 2 used in the 1989 and 1991 survey within atwo- <br />mile radius of the plant. Since only two data points are available, an average of the 1989 and <br />1991 1/flinch sampling results is used. Colors are calibrated to each range. The color intensity <br />corresponds to increases in concentrations. The difference in the lowest to the highest <br />concentrations is roughly now three magnitudes. The same intervals used in maps 1 and 2 are <br />kept and an interval above 10 pCUgram is added. <br />21 <br />1oBD 1p• <br /> <br /> <br />