Wa wa we "I BL £1 E2 £3 APPROXIMATE HIGH TIDE —INE, a © = IMP LOCATION x = SOIL SAMPLE LOCATION VERA ~ ALEMBEL m4 50m FIGURE 7-45. COASTLINE AND DATA COLLECTION LOCATIONS FOR ISLAND VERA Characterization Vera was staked on a 50 m grid and IMP measurements taken on this grid in November 1977. Soil samples were collected at four locations with two composites at each of three depths for a total of 24 samples (see Section 4.2.1 for more details concerning soil sampling). Based on the results from this soil sampling, a ratio of TRU to 24lam of 2.5 + 0.15 was estimated. (See Tech Note 2.2A.) Both IMP and soil sample locations are shown in Figure 7-45. Using the IMP 24lam data and the estimated ratio, TRU numbers were calculated based on original data. (See Tech Note 23 for discussion on original versus final data.) Estimates of the 0.5 s upper bounds on the 0.25 hectare averages were made uSing the kriging technique, where s is the standard deviation of the kriging error (see Section 5.1). No upper bound on any TRU average exceeded 40 pCi/g so that Vera met Condition C without any soil removal 256