ML20138K722

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Parks Shallow Land Disposal Area Addendum to Rev 0,App a of 1995 Field Work Rept, Vol 2
ML20138K722
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Site: 07003085
Issue date: 01/31/1997
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ATLANTIC RICHFIELD CO. (ARCO)
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{{#Wiki_filter:- _ ARCO i PARKS i Shallow Land Disposal Area 1995 Field Work Report i Volume 2 of 5 t i l Addendum to Rev 0 j Appendix A I Downhole Gamma Logging of In-Trench Temporary Sampling Points 1 I l Date issued: January 1997 i Dk A O K 070 308 C PDRj Supplement to Report Number 92-043.226 i

n Table 7, Appendix A, Rev.1 O ] TWSP Statistical Evaluation '2 SLDA Source Term Calculation Part 1: 4" TWSP Data l SLDA Source Term Calculation Part 2: 2" TWSP Data l SLDA Source Term Calculation 5 Part 3: Uranium Activity and Mass Inventory m, I SLDA Source Term Calculation Part 4: Summary of 6 Uranium Activity and Mass SLDA Source Term Calculation Part 5: U-235 Mass by TWSP and by Trench Appendix F1 - Supplement to Appendix F 8 Appendix G1 - Supplement to Appendix G o intentionally left blank .l0 n ~.

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I l i O Revision I to Table 7, Appendix A, Rev. O of the 1995 Field Work Report January 23,1997 l O i Prepared By: MJW Corporation Inc. l 338 Ilarris 11i11 Road, Suite 208 j Williamsville,NY 14221 .!O Supplement to Report Nurrber 92-043.226

l n MEMORANDUM TO FILE !U l Explanation for Revisions to Table 7, Volume 2 of 5 of the 1995 Field Work Report, Appendix A. Rev. 0 2/5/96 During the last week of 1996, MJW was requested by GCX, Inc. to review the 1993 and 1995 TWSP data as compiled in Table 7 of Appendix A of the 1995 Field Work Repon. This request was prompted by the present criticality calculations being performed and the anomalies between the 1993 data and that recorded in 1995. The 1993 data listed in Table 7 was first check for accuracy. The following data problems were identified as a result of this review of the data: The value reported for TWSP02-4 at eleven (1I) feet was reported in error. Review of Appendix F, 1993 Two-Inch TWSP Gamma Logging Data shows that for TWSP02-4 at 11' that there is no data listed for a peak in the region of spectrum from channel 165 to 211 at this depth. Peaks were identified in this general region between depths of 6' to 10' in TWSP02-4. The spectrum at 11' was reevaluated and it was confirmed that the net integral for the region of the spectrum between channels 168 and 206 was zero. Therefore, the new value for TWSP02-4 at 11' is zero versus the originally reported number of 728.3 pCi/g. Funher a value of zero is more consistent with the 1995 measured value of 12.7 pCi/g for TWSP 02-4 at 11' The protocol for TWSP measurements in 1993 was to count the first four one foot intervals for 5 minutes and each one foot mterval below four feet for 10 minutes. This data collection procedure was followed for TWSP01-1 through TWSP02-4. The counting protocol was modified at TWSP03-01 in O 1993 to count the first four feet at 5 minutes and all one foot intervals below four feet for 20 minutes. V The original activity calculations for Rev. O of the 1995 Field Work Report for TWSPs 03-1 through 10-8 used 10 minutes as the count time instead of 20 minutes. Therefore, the values reported in Table 7 for these TWSPs are a factor of 2 above what the actual value should be. Therefore, all of the 1993 activity data calculated for this group of TWSPs listed in Table 7 is actually one half of the value given. The newly revised Table 7 corrects this error. All spectra collected in 1993 were re-evaluated to determine if, even in the absence of a discernible peak, w hether or not a net positive integral would result over the same region w here other spectra had shown an identifiable peak. The results of this re-evaluation show that 91 additional data points have been added to Table 7 for the 1993 data. Of these 91 additional points however,63 or approximately 70%, are reported at an activity level less than the calculated minimum detectable activity (of 3.5 pCi/g) for the detection system. For the 28 additional data points y hich are above the MDA, the data range from 3.5! pCilg to 27.7 pCi/g with an average of 7.315 pC. 't one standard deviation. There are a few instances where it appears that the depths for the 1993 data are off by one foot w hen compared to the 1995 data. For example the data for TWSP05-3 at 9,10 and 11 feet for 1993 appears to match up with the 1995 data for 8,9 and 10 feet. Similarly, the 1993 data for TWSP06-1 from 8' to 13' matches well with the 1995 data for TWSP06-1 from 7' to 12'; and TWSP01-2 from 5' to 6' for 1995 seems to match well with the 1993 data for TWSP01-2 for 6' to 7'. It is believed that the 1993 data was measureu at the end of the one foot measurement interval whereas the 1995 data was measured at the mid-point of the interval. The probe location would therefore be approximately 6" off between the two data sets and would account for the discrepancy. l O f MJW CorporaNn Inc. Page 1 of 2 January 8,1997 92-043.226

The data re-evaluation for the 1995 re-measurement of selected depths for the two-inch TWSPs shows g I that an additional 49 data points have been added to the original Table 7 of Appendix A of the 1995 Field Work Report. Of these 49 additional data points,41 or 83.7% are reported at an activity level below the MDA. For the eight data points which are greater than or equal to the MDA, the data range from 3.5 to 7.6 pCi/g with an average value of 4.911.3 pCi/g at one standard deviation. In general, the 1993 TWSP gamma log data was predictive oflocations ofincreased gamma activity when compared with the re-measurements made of these same TWSPs in 1995. More importantly, the 1993 data measured above background levels is of the same magnitude as that calculated for the 1995 two-inch TWSP re-measurement data, thus adding increased validity to and showing increased consistency with the earlier 1993 measurements. (3 V MJW Corporation Inc. Page 2 of 2 January 8,1997 92-043.226

Tcbis 7. Eetimet:d Trcnch U-235 Cenc:ntrctiena es M : cur:d by Dswn-i Hole Gamma Logging in Two-inch TWSPs in 1993 and 1995 O 1993 1995 1993 1995 I Count Activity Activity Count Activity Activity g Depth (ft) (pCi/g) (pCi/g) Depth (ft) (pCi/g) (pCi/g) TWSP01-1 1 4.7 TWSP02-1 1 4.1 TWSP01-1 2 2.4 2.3 TWSP02-1 3 3.5 TWSP01-1 4 1.2 TWSP02-1 4 0.8 11.9 TWSP01-1 6 0.6 TWSP02-1 5 16.6 51.2 1 j TWSP01-1 7 0.2 2.5 TWSP02-1 6 31.8 3.8 TWSP01-1 9 1.4 TWSP02-1 7 15.4 TWSP01-1 11 IJ TWSP02-1 8 12.5 TWSP01-2 2 2.2 2.8 TWSP02-1 9 0.7 TWSP01-2 3 0.5 TWSP02-1 10 0.5 TWSP01-2 5 68.4 TWSP02-1 11 43 3.9 TWSP01-2 6 45.1 13.6 TWSP02-1 12 14.7 7.6 TWSP01-2 7 7.9 8.0 TWSP02-2 3 5.6 IWSP01-2 8 6.1 6.5 TWSP02-2 5 83 2.6 TWSP01-2 9 1.5 2.4 TWSP02-2 6 9.2 14.2 TWSP012 10 1.7 TWSP02-2 7 27.1 18 3 TWSP01-3 4' 1.0 TWSP02-2 8 6.0 24.6 TWSP01-3 5 3.5 TWSP02-2 9 4.7 20.8 TWSP01-3 8 0.1 TWSP02-2 10 10.0 12.9 TWSP01-3 10 2.0 TWSP02-2 11 20.5 TWSP01-3 11 8.9 0.4 TWSP02-2 12 213 TWSP01-4 1 3.6 TWSP02-2 13 10.0 TWSP01-4 2 2.0 0.6 TWSP02-3 1 3.0 TWSP01-4 4 0.7 TWSP02-3 2 43 TWSP01-4 5 4.8 TWSP02-3 3' 16.6 TWSP01-4 6 3.3 12.5 TWSP02-3 4 0.8 TWSP01-4 7 43 TWSP02-3 5 3.1 1.9 TWSP01-4 9 5.2 TWSP02-3 6 13.5 5.3 TWSP01-5 2 2.2 TWSP02-3 7 10.0 14.8 TWSP01-5 4 1.5 TWSP02-3 8 17.7 13.0 TWSP015 5 0.5 TWSP02 3 9 27.1 12.5 TWSP01-5 7 8.2 7.9 TWSP02-3 10 275.0 160.0 'lWSP01-5 8 21.9 25.2 TWSP02-3 11 10.7 18.6 TWSP01-5 9 3.7 3.0 TWSP02-3 12 15.5 10.8 TWSP01-6 0 2.2 TWSP02-3 13 23.7 33.7 TWSP01-6 1 0.2 TWSP02-3 14 38.7 TWSP01-6 2 13 3.9 TWSP02-4 3 5.3 TWSP01-6 3 2.5 TWSP02-4 5 3.9 12.4 TWSP01-6 5 23 0.6 TWSP02-4 6 41.2 16.9 TWSP01-6 6 6.5 3.0 TWSP02-4 7 11.4 40.9 TWSP01-6 7 23.1 5.0 TWSP02-4 8 51.6 27.7 TWSP01-6 8 41.9 64.2 TWSP02-4 9 38.8 203 TWSP01-6 9 11.4 44.5 TWSP02-4 10 24.9 23.9 TWSP01-6 10 13.4 TWSP02-4 11 12.7 TWSP02-1 . O, 4.8 TWSP02-4 12 1.8 9.2 O MJW Corporation Inc. Page 1 of 3 Appendix A, Rev.1 1/17/97

._= Tcbis 7. Ectimnt:d Trcnch U-235 Canc:ntrctiona ca M xur:d by D:wn-Hole Gamma Logging in Two-inch TWSPs in 1993 and 1995 1993 1995 1993 1995 Q(./ Count Activity Activity Count Activity Activity g; Depth (ft) (pCilg) (pCi/g) Depth (ft) (pCi/g) (pCi/g) TWSP02-4 13 6.0 TWhP06-3 14 0.6 TWSP02-4 14 1.8 TWSP06-3 15 6.8 TWSP03-1 3 0.4 TWSP06-3 16 6.7 TWSP03-1 4 0.6 TWSP071 2 3.4 TWSP03-2 8 13.0 1.7 TWSP07-1 6 5.2 TWSP03-2 9 32.9 55.5 TWSP07-1 7 0.6 113.3 TWSP04-1 1 2.9 TWSP07-1 8 0.1 43.7 TWSP04-1 7 1.7 TWSP07-1 9 41.7 11.4 TWSPO4-2 0 13 TWSP07-1 10 383 22.0 TWSPO4-2 1 1.4 TWSP07-1 11 2.97 TWSPO4-2 2 2.5 TWSP07-I 14 10.29 TWSPO4-2 3 2.6 TWSP07-2 4 0.7 TWSP04-2 4 1.7 TWSP07-2 5 1.0 TWSPO4-2 7 0.5 TWSP07-2 7 0.5 TWSPO4-2 8 1.8 TWSP07-2 9 0.4 TWSPO4-2 9 0.7 TWSP07-2 10 2.4 TWSP04-2 10 4.8 TWSP07-2 11 53 TWSPO4-2 11 12.4 38.0 TWSP07-2 12 1.1 0.6 TWSP04-2 12 35.5 31.4 TWSP07-2 14 1.7 TWSP04-2 13 39.8 11.7 TWSP07-2 15 0.1 TWSPO4 2 14 0.9 0.5 TWSP07-3 0 2.0 TWSP04-2 15 0.7 7.6 TWSP07-3 6 15.5 14.2 TWSPO4-2 16 36.6 TWSP07-3 7 6.7 23.4 TWSP03-1 9 17.2 TWSP07-3 9 0.7 TWSP05-1 10 51.0 TWSP07-3 10 1.5 TWSP05-1 11 24.5 43.7 TWSP07-3 11 9.5 1.2 i TWSP05-1 12 64.2 23.2 TWSP07-3 12 21.9 16.8 ) TWSP05-1 13 80.5 28.9 TWSP07-3 13 15.6 10.5 TWSP05-2 2 1.0 TWSP07-3 14 9.4 TWSP05-2 6 8.6 TWSP07-3 16 1.1 2.8 TWSP05 3 8 7.8 TWSP07-3 17 3.1 TWSP05-3 9 7.0 50.6 TWSP08-2 17 2.2 TWSP05-3 10 33.7 20.5 TWSP08-2 19 0.2 TWSP05-3 11 10.5 0.5 TWSP09-1 6 5.0 TWSP05-3 12 0.4 TWSP09-1 7 2.5 TWSP06-1 7 153.2 TWSP09-1 8 2.3 TWSP06-1 8 345.3 37.1 TWSP09-1 9 10.7 TWSP06-1 9 31.1 181.7 TWSP09-1 10 3.9 TWSP061 10 70.3 12.0 TWSP09-2 1 1.0 TWSP06-1 11 25.9 15.4 TWSP09-2 3 2.4 TWSP06-1 12 11.2 44.9 TWSP09-2 6 5.6 TWSP06-1 13 85.4 TWSP09-2 7 0.3 TWSP06-2 12 27.7 TWSP09-2 8 6.1 TWSP06-2 13 3.6 TWSP09 2 9 8.2 TWSP06-2 14 2.0 TWSP09-3 7 2.5 r' TWSP06-3 13 13 TWSP09-3 8 1.5 MJW Corporation Inc. Page 2 of 3 Appendix A, Rev.1 1/17/97 )

l l Tcblo 7. Ectimct::d Tranch U-235 Conc:ntrcticn3 c2 M= cur:d by Dswn-Hole Gamma t ogging in Two-Inch TWSPs in 1993 and 1995 1993 1995 1993 1995 ,\\ Uount Activity Activity Count Activity Activity

g Depth (ft)

(pCi/g) (pCi/g) Depth (ft) (pCi/g) (pCi/g) TWSP10-1 3 1.5 TWSP10-5 2 0.4 l TWSP10-1 7 27.5 TWSP10-5 11 48.3 TWSP10-1 8 22.5 54.7 TWSP10-5 12 85.3 22.0 TWSP10-1 9 29.4 2.8 TWSP10-5 13 11.1 4.7 TWSP10-2 1 2.2 TWSP10-5 14 1.0 TWSP10-2 10 4.5 TWSP10-5 15 1.9 TWSP10-2 11 1.1 TWSP10-5 18 1.9 ) TWSP10-4 3 0.7 TWSP10-6 9 0.4 TMP10-4 4 1.5 TWSP10-8 2 0.7 T W 5 Plo-4 8 0.2 TWSP10-8 6 0.3 0.7 ) TWSP10-4 17 0.1 TWSP10-8 7 0.4 TWSP10-8 19

0.3 Legend

Bold locatic n indicates new data point. Bold 1993 da ta point indicates new or revised data. j Dold 1995 data point indicates new or revised data. Note: MDA for U-235 for 1993 and 1995 measurements is 3.5 pCi/g. O i l l k i MJW Corporation Inc. Page 3 of 3 Appendix A, Rev.1 1/17/97

Stttistical Evaluation of TWSP Gamma Log Dea Collected in 1993 and 19.95 The commercially available software Statgraphics Plus version 6.1 developed by the Statistical Graphics Corporation was used to analyze the TWSP gamma logging data. The data sets consist of 503 hq data points calculated from the two-inch TWSP measurements collected in 1993; the 310 four-inch TWSP measurements made in 1995 and the 200 two-inch TWSP measurements which were recollected in 1995. ne rationale for the re-measurement of two-inch TWSPs in 1995 is discussed in detail in Appendix A, Volume 2 of the 1995 Field Work Report and will not be repeated here. Data Set Maken and Asswnptions All spectra collected in two-inch TWSPs in 1993 and 1995 were re-evaluated to determine if, even 4 in the absence of a discernible peak, whether or not a net positive integral would result over the same region where certain other spectra had shown a visible peak. The numerical results of this data re- { evaluation are presented in Appendix F1 and G1 to Appendix A of the 1995 Field Work Repon for the i 1993 and 1995 TWSP data, respectively. 1 The results of this re-evaluation for the 1993 gamma log data show that 91 additional data points have been added to Table 7 of Appendix A of the 1995 Field Work Report. Of these 91 points however,63 or approximately 70% are reported at an activity level less than the calculated minimum detectable activity (of 3.5 pCi/g) for the detection system. For the 28 additional data points which are at or above the MDA, the data range from 3.5 pCi/g to 27.7 pCi/g with an average of 7.3 i 5 pCi/g at one standard deviation. j The data reevaluation for the 1995 re-measurement of selected depths for the two-inch TWSPs shows that an additional 49 data points have been added to the original Table 7 of Appendix A of the 1995 Field Work Repon. Of these 49 additional data points,41 or 83.7% are reported at an activity level below the MDA. For the eight data points which are greater than or equal to the MDA, the data range from 3.5 to 7.6 pCi/g with an average value of 4.9 i 1.3 pCi/g at one standard deviation. In reality, both of these revised data sets for the 1993 and 1995 two-inch TWSPs add little to offset the large number of TWSP gamma log data points which are calculated at a concentration of zero pCi/g or as a negative number. TWSP data calculated as zero was input into the statistical pa:kage as zero. All concentrations calculated as a negative number are also entered into the statistical data set as zero even though these negative numbers represent the fluctuation of the measurements around a measured background value for both the two-inch and four-inch TWSPs. The rationale for including negative numbers as zero in the data set was to alleviate any additional potential data bias which would lower the calculated average and perhaps serve to underestimate the U-235 activity in the trench. Results of Statistical Analyses TM statistical analysis of the 1993 and 1995 two-inch TWSP data and the 1995 four-inch TWSP data is presentetiin the following four tables and three graphs. Table I shows the summary statistics for the three data sets ne 1993 two-inch TWSP data is contained in the variele Data 93,_2in; the 1995 two-inch data in the variable Twolnch_95 and the third variable, Four_1995, cc emins the 1995 four-inch TWSP data set. The " sample size" is the number o data points analyzed in each set. Nineteen different statistics are then f listed for each variable, beginning with the average for the data and ending with the simple arithmetic sum of the data points. This statistical summary shows that the average and standard deviations for these three data sets are very similar, ranging from 3.93 i 14.7 to 5.07i 17.4. The average, median, mode and geometric mean measure the central tendency of the data. The variance, standard deviation, range and interquanile range measure spread or dispersion of the data. The variance and standard deviation use a divisor of n-l. The skewness coefTicient measures the symmetry, or shape, of the data. A skewness of zero indicates that the data are symmetrically distributed. Positive values of skewness, as seen with the TWSP data, indicate that the upper p tail of the curve is longer than the lower tail. The kunosis coefGeient reveals how flat or steep the d distribution of the data is with respect to a Gaussian or normal distribution. The kunosis coefficient is zero NUW Corporation Inc. 1 02/03/97

Statistical Evaluation of TWSP Gamma Log Data Collected in 1993 and 1995 i for a normal distribution. When then coefficient is greater than zero as it is with all data sets shown in /3 Table 1, the curve is either very steep at the center or has relatively long tails. The distribution fits of the V data shown in Figures 1-3 show that the curves have both of these characteristics. The standardized coefficients test for significant deviations from the normal distribution. When the values for the standardized coefficient are outside the range of-2.0 to +2.0 as is the case with the values calculated for the Table I data, the data may depart significantly from a normal distribution. Based on the summary statistics infonnation in Table 1, it appears that the three data sets have similar means and similar distributions. Tables 2 through 4 present the results of the Two-Sample Analysis procedure. This procedure estimates and tests the means and variances of two independent samples. Table 2 compares the 1993 two-inch TWSP data with the 1995 two-inch TWSP data. Table 3 compares the 1993 two-inch TWSP data with the 1995 four-inch TWSP data. Table 4 compares the 1995 two-inch TWSP data with the 1995 four-inch TWSP data. It should be noted here that the original number of data points collected for the 1995 two-inch TWSP rework was 200. The 1995 data set was supplemented with zero data points for those TWSP locations where no measurement was made and for which the 1993 calculated activity was also zero. The confidence interval for the difference between the means and for the ratio of variance were both set to 99.99%. The results for all three comparisons in Tables 2-4 show that the test for no difference between the means can not be rejected at an alpha (confidence) level of 99.9%. Finally, the data for each data set was plotted using the Frequency Histogram plotting function to determine the distribution fit of the data. In all cases the distribution fit (as represented by the dotted line on each figure) shows that the fit is exponential. Figures 1-3 plot the distribution of the data in 5 pCi/g increments. The largest bar seen for each histogram represents the interval from -5 pCi/g to 0 pCi/g and contains all the zero data points for each data set. Even in the abseace of the zero data points the shape and likely best fit of the data distribution still appears to be exponential. ,,,.armei MJW Corporation Inc. 2 02/03/97

Table 1. Summary Statistics: 4-Inch, 1993 2-Inch and 1995 2-Inch TWSPs Sample size 310. 503. 453. Average 3.932548 4.845924 5.073951 Median 0.02 0. O. Mode O. O. O. Geometric mean Variance 217.395376 493.629739 304.284364 Standard deviation 14.744334 22.21778 17.443749 Standard error 0.837422 0.990642 0.819579 Minimum O. O. O. Maximum 165.49 345.3 181.7 Range 165.49 345.3 181.7 Lower quartile O. O. O. Upper quartile 0.93 1.1 0.6 Interquartile range 0.93 1.1 0.6 Skewness 7.341033 11.271609 6.415765 Standardized skewness 52.766998 103.203463 55.747057 Kurtosis 66.583755' 153.622467 51.298488 Standardized kurtosis 239.300447 703.287837 222.868169 Coeff. of variation 374.930764 458.483825 343.790215 MJW Corporation Inc. Page 1 of 1 01/17/97 O

Table 2. Two-Sample Analysis: 1993 2" TWSP Data vs 1995 2" TWSP Data ()SampleStatistics: 1993 2" 1995 2" Pooled Number of Obs. 503 453 956 Average 4.84592 5.07395 4.95397 Variance 493.63 304.284 403.919 Std. Deviation 22.2178 17.4437 20.0977 Median 0 0 0 Difference between Means = -0.228027 l Conf. Interval For Diff. in Means: 99.99 Percent j (Equal Vars.) Sampic 1 - Sample 2 -5.31436 4.8583 954 D.F. i (Unequal Vars.) Sample 1 - Sample 2 -5.25194 4.79589 936.9 D.F. Ratio of Variances = 1.62226 Conf. Interval for Ratio of Variances 99.99 Percent Sample 1 - Sample 2 1.2356 2.07654 502 452 D.F. j Hypothesis Test for HO: Diff = 0 Computed t statistic = -0.175163 vs Alts NE Sig. Level = 0.860988 at Alpha = 0.001 ao do not reject HO. 4 4 I () 1 4 MJW Corporation Inc. Page 1 of 1 01/17/97 1 I, f

_ _ _ = i Tcblo 3. Two-Sample Analysis: 1993 2" Data vs 1995 4" Data 1 ())_________________________________________ l 1993 2" 1995 4" Pooled Sample Statistics: Number of Obs. 503 310 813 Average 4.84592 3.93255 4.49765 i Variance 493.63 217.395 388.381 Std. Deviation 22.2178 14.7443 19.7074 i Median 0 0.02 0 3 Difference between Means = 0.913376 Conf. Interval For Diff. in Means: 99.99 Percent (Equal Vars.) Sample 1 - Sample 2 -4.65074 6.47749 811 D.F. (Unequal Vars.) Sample 1 - Sample 2 -4.15881 5.98556 806.6 D.F. 1 Ratio of Variances = 2.27065 Conf. Interval for Ratio of Variances: 99.99 Percent Sample 1 - Sample 2 1.62757 3.05214 502 309 D.F. Hypothesis Test for HO: Diff = 0 computed t statistic = 0.64186 vs Alta NE Sig. Level = 0.521146 at Alpha = 0.001 so do not reject HO. i i i 4 ) f MJW Corporation Inc. Page 1 of 1 02/17/97 i O

i i Table 4. Two-Sample Analysis: 1995 2" Data vs 1995 4" Data 1 4 (~},__________________________________________19952" 1995 4" Pooled sample statistics: Number of Obs. 453 310 763 Average 5.07395 3.93255 4.61021 variance 304.284 217.395 269.004 i 4 Std. Deviation 17.4437 14.7443 16.4013 i Median-0 0.02 0 i j Difference between Means = 1.1414 ) conf. Interval For Diff. in Means: 99.99 Percent 1 l (Equal Vars.) sample 1 - Sample 2 -3.58728 5.87009 761 D.F. (Unequal Vars.) sample 1 - Sample 2 -3.44284 5.72564 727.9 D.F. Ratio of Variances = 1.39968 l Conf. Interval for Ratio of Variances: 99.99 Percent Sample 1 - Sample 2 0.925444 2.09218 452 309 D.F. 4 \\ Hypothesis Test for HO: Diff = 0 computed t statistic = 0.944121 vs Alts NE Sig. Level = 0.345407 j i at Alpha = 0.001 so do not reject HO. 4 i 4 4 1 3 i i i e b ] MJW Corporation Inc. Page 1 of 1 01/17/97 1 O

=. O Figure 1. Frequency Histogram 1993 Two-Inch TWSPs g . i g. > > g i i i i i i ..j.. g iDistribution Fit} Exponential 300 ~ SC I '5 i D. I m5 O I i Oo I J' l 200 - i i-i- i-i- E3z t i w i I C 1 W3 E i s. ,e 1e jy

4..

l I l l i 0 -t - -;- - - - - - - !- - - - - -- l- - - -- - - i - 1 l l I 1 i i , i i i i i i i i i -10 90 190 290 390 Distribution Intervals,5 pCi/g O

4 i s 4 nU Figure 2. Frequency Histogram 1995 Two-Inch TWSPs ,,,,i.,,,.,,,,,,i l g _. i... ..j.. .. {.._ i j l ! Distributipn Fit: Exponential 1 300 -i g-1 2 .c \\ ) o 4 f o. g i m j I N ,I O 'l 'B i m .i j 3 200 -i-i-i- i-i- i-i- E i 3 i z i g i C 1 e3 E i ..k.. 1 t 1 g t t 0 -f . ~'-- + - - - + - - - -i---- I i,,,i,,,i,,,I 1 -10 30 70 110 150 190 230 Distribution Intervals,5 pCi/g

! O i l Figure 3. Frequency Histogram 1995 Four-Inch TWSPs i 4 l i i ..,i...,..., i 240 -i,- i-l i 1 1 i 1 1 I 200 i t I ^ I .h i Distribution Fit: Eiponential E 160 l" i-g o i D I u .8 120 $~ "i- +- i- -i- ~i-E i 3z i k I 80 -) - E i uu. I I ..J 40 .g.. .. +.. 1 4 i ~. t \\ 0 -h - t- - - - - l- - - - - -i - - - ~c - I I ,,,1 i i i -10 30 70 110 150 190 Distribution Intervals,5 pCi/g

i, O I SLDA Source Term Calculation from Gamma Log Data i Part 1: Four-Inch TWSP Data t 1 i 4 January 23,1997 ,!O l i 4 1 1 i i Prepared By: Thomas E. Potter Radiation Protection Consultant 4231 Jenifer Street, N.W. I Washington, D.C. 20015-1959

O Supplement to Report Number 92-043.226 I

J

SLDA Source Term Calculation from TWSP Gamma Log Data - 4" TWSP Data TWSPGAMB.XLS-SLDA SOURCE TERM CALC FROM TWSP GAMMA LOG DATA-5 SHEETS ; (~ SHEETT--F T. W. sP D^TA7_.---. ~. I - - - -~ ~ ~ ~I~ - -~~I- -~~~'~~~l'_~~~~~- 7 -.- - TW5PS WITH SiG FIC NTNTSiT-7,2 5,2W2 7,5J,~5 5', 477 i,~7 b, 7-6', 93, I ~~ ~ ~ ~ ~ ~ ~ ^ TWSPS WITH NO SUBSTANTIAL HITS: 1_8_.,1-9,1-10,1-11,1-12,9-5,10-9,10-10,10-11,10-12,10-13 r---------r------- __.._......_..L. .......___l...._...___i.__..._..... _...._.I...__...._;___.._.b,_ DATA TABULATED FOR ALL ANALYSES AND FOR THOSE DEEPER THAN 3'(1.E., IN TRENCHES)_.. _... _,. _ _ _ _ j l AVE. RAGE CONCERTRATidNS C LCUL5T. ED ^T BDTTdiWOF SHEET i- ___._ _ i -._. ~ ~ ~ ~ _.___._._.r.._ ' ~~~ '~ ~~~ T01-7_00.OXS I 11 7; Oi FALSE ! 0.09 T01-7 01.OXS._i.-.._. 1I _ -- -.7 [ 1 F [SEl -0.73)-.. - _ _ ~ 3 IF^LSsT~~~ d.66037[I ~ ~~ ~6.7 ~I~~ ~ ~ ~~ I~~ ~ I' ~ ~ - ~ ~~ T0i~7 03 OXS ~ 1! 7i Tdi-~7 04.OXS 1! 7l 4 F [SE T. _._. -~ 3.57I~ 3.6 ~~~ ~~ T01~7 06'dXS'f-~ ii - 7 -6! TRUE i ~ -mS-1 7i 7: TRue.i -. 2.11t - i2.i r 7 - - 1 _ RUF C 337I 3.5 ~ I~ ~~ T0'T-7 69.OXS i 1! 7: 9; T 7__. _ Tdi-7 ii.'DRS i 1; 71 11l TRUs l 47.32l 37 3 ~ ~ ' - ~ ~ ~ ~ ~I ~dI~ FALSE 7 0.53T T T0i~8 d~0IORS~~l il 8 ~~ C T6i:s di ORS'~ U ~ 'il Y-DAi 5E I 6~DiI { ~~ TOi-8~ 2 dXS.. i~. _ _. _... 1 !._.. 8' 2 FALSE.' -1.35! _. _ l _. _ ~ ~ ~~ ~ T018 04.OXS T ii 81 4 FALSE i 0.44; 0.4E - - ~ TOI-'8~ 5 DSS i~ 11 8 5 FALSE ! 0.53l 0.5I 7~ ~ ~ ~ ~] ~~ 8I 6 FAi_SE'[ 4 53 - ~ l' - ~ ~ l ~ ~ - Tdi 8 d6. ORS i -05 1 I d[ ~ ' 'i~ ~ ~ ~ ~ TOT-8 07.dXS 1i 8 7; FALSET 0.25 1 ~ T018 08IOXS - ~~ II-~ ~ ~8 ~~ I FELSE'! -0.12i -0.1i 8 ~ ~ ~ ~ I.~.~_~ ~.~_~ T._ FALSE _ l - -. 0.1 I-~ ~ ~ I ~ ~ ~ ~ T65 ~8 09.OXS. 3 '- TI~.. _ - _. ~ ~ ~I ~ ~ - 8 0.10: TOU9 00.OXS' ~~I~ ~ ~lI~ 9; 0; FALSE I ~~0.02I~~ ~ ~~$~~ ___ I ~ ~ 1ITRUE T~~~ di95I ~ '0.9I ~~ ~ 8 ~ ~ ~ ~ 1 t' ~ ~!2.38* ~ "-~ ~ l ~ ' ~~ ~ " ~ 9 '^ '1l ' FALSE ~ -0.89 ; ~~ - ~ ~ ~ ~ T0i'9 01'.dXS ~I^ ~ ~l~~~~9 2IFAI.SE TOT-9 02.OXS 7 1 T0_1...9 0_3.OXS_Y__i i. 9; 4i FALSEj 0.02i 0.0 _ __L_ __ _ _ ~ ~ ~ 9. 3'1 FALSE ; 0.20 I - ~ ~ I - ~ l T01-9_04.OXS] 11 1 T01-9_05.OXS4_ 1! 9 SLFALSEj _ 0.42[ 0.4 _ j__ _. T01 9_06.OXS_ _ g__ _ _1 1 9; 6[ TRUE ! 0.19C _ _0.2, __4 _ _ ~ il 9: 7j FALSE. 0.77i 0.8: T01-9 07.OXS i TOT 9 08iOks7 11._ 9: 8! FALSE i _. -0.28' -0.3l~ ~ l- ~ ' ~ ~ u__ p TOU9 1'0. ORS ~~ E. _ ~_. ~ ~1 l 9 -. - 10IFAL'SE l 1.23: 1.2' ~~ ~ I~ ~ ~ ~ ~ O T0i:100d.OXS '- ~~~ iI ~~ ~ 10N ~"~ i FAi.SE~I ~ ~ 13I~~~~ T ~ ~ *~ ~ Page 1 of 8 2/3/97

SLDA Source Tcrm Calcul tion from TWSP Gamma Log Data - 4" TWSP Data l - TWSP J DEPTH I > Lc i U-235 : U-235 ; I i SAMPLE iTRENCHI 7 -- ALL MEAS > 3 FT ; f d I i i~ (feet) i j pCi/g PCITg-~I i T01-1001.OXS L 1 10! il FALSE j -2.02; [ T01-1002.OXS 1 10! 2 FALSEj -1.02i l T01-1003.OXS 1 10' 3 FALSE i -0.2E! E'- ~ t ] ~~ T01-1004.OXS 1[ 4j F LSs[ -0.90 1 -0.9 1 4 5J_FALSEg -0.08 -0.1l T01-1005.OXS 1 10 T01-1006.OXS 1 10] 6 FALSE j. 0.61 0.6j T01_,-1007.OXS - 1 10 7 FALSE -0.46J -0.5[ T01-10_08.OXS 1 10 8 _ FALSE -1.07L -1.1 t l 4 t 10: 9fFALSE 0.41 l 0.4I l T01-1009.OXS T01-1106.DRS~~~i[ i Y9b5_id1]XS_,_ 1}f 15i'~~~~0i FALSE j -0.02i ] i i 11 7 1"LF [5$ j 1.28l I~ T01-1102.OXS _]j1[ 11[ 2! FALSE l 0.50j __j T01-1103.OXS [~__ 1' 11[ 3[_ FALSE l 0.961 l t T01-1104.OXS 1 1'1)f 4{F^[SsT 0.28 [ _ 0.3[ []((__ 11 5[ FALSE l -0.70 ; -0.7 i T01-1105pXS 1 T01-1106 OXS 1 tij 6i FALSEj -0.28; -0 4 i T01-1107.OXSj 1L 11j 7]_ FALSE -0.08j -0.1 j__ T01-1108.OXS 11 11]__8J FALSE 0.37]_ 04;.. j_ T01-1200.OXS i __ 11 12! 0l TRUE 1.74i l l 1 FALSsj 0.08i I~ T- ~ ~ Tdi~i2di.dRSI 1I II ~1{ Fh~LSEf E -~U.55i ~ ~ I l T6I~i262.DXS~~[- ~] 12j ~ 1 2 T0iyOfOXS7 ij '55; ~5i~5[5El -2.27I~ _j L ___ 1 s (( 1[ 12; 4}_ FALSE I 0_.25] 0.2[ T01-1204.OXS 1l 12] 5l FALSE _j 0.55j 0.5[_ T01-1295.OXS T01-1206.OXS] ij_. 12l 6j_ FALSE l -0.30j_ -0.3l T0,1-120_7.OXS_j 11 12j 7j_TRUE_j_ 1.06j 1.1 l 4 T01-1208.OXS 1j 12j 8 FALSE l -0.45g _-0.5] ~ T01-1209.OXS il 12i 9! TRUE i 0.93i 0.9i i T02-5 00.OXS l 2 si 0l FALSEl 0.59{. 4 J ~ i T02-5_01.OXS__j _2[ 5! 1} FALSE l 0.46j _ _ _ 4 _,_ i T02:5_02.OXS _l 2j Si 2;_ FALSE -1.304 i T02-5_03.OXS 2: 5! 3j_ FALSE 0 76; _j ___ l T023_04.OXS_j _2j_ 5 4l TRUE. 2.40j 2.4l T02-5_05.OXS 2i 5 51 TRUE [ 3.60: 3.6[ T025_06_A.OXS 6{TRUE_ 1.98[___2.0p 2j_ __5 ._ _ 7) TRUE 3.60: 3.6: j T025_07A OXS_ 2( _5 L TQ2p_Q8A.OXS_j 2! Sj_ _ 8{ TRUE _12.57J 12.6J l T025_09A.OXS l 2l Sj 9' TRUE 12.80' 12.8: j T025_10A.OXS_j_ 2j _ 51 10 TRU_E 10.24 10.2j_ l 7 T025_11 A.O_XS_ 2i 5! 11[_TRUE 1.58) 16L FALSE (_-1.3,9] j IO25_12A.OXS_ 2j _ SJ_ _12L FALSE -2.33 -2.3l [ i TQ26_00A.O_XS _ 2j 6 0; 4 1(FALSE [ -O p_1j _ _ _ _ j i_ _ T_026_01 A.O_X_S 2J_ 6 Tg_26_02A.OXS 2] _ _ 6 L 21 FA_LSE_ _ -125j }_ ___i__ T026 03A.OXS 2l 6: 3l FALSE -4.67! i ~ l O ~ 2 7 - ~ 5i 4T~ FALSE ! -0.53' -0.5l l A T526 0dX~ RS~ Page 2 of 8 2/3/97

1 SLDA Source Term Criculation from TWSP Grmma Log Data - 4" TWSP Data l SAMPLE TRENCHj TWSP DEPTH l > Lc l U-235 l U-235 I 1 l ! ALL MEAS > 3 FT f ~ i O i (feet) ' I pCilg pCi/g l T026_05A.OXS _} 24 6j Sj FALSEj -1.6_2 ! -1.6: FALSE I -0.53 -0.5I T026_06A.OXS 2! 6' 61~yL5E~ -1.15 -1.i{ T~ i T056_07A;OXS __j__ 2i 5 fj_ T026_08A.OXS 1 2} 6! FALSE -1.611 -1.6l 1 T026_09A.OXS 2I 6[ 9 FALSE ' -3.09 ; -3.1l l ~ T026_ii ~ ORS ~ 2I-6! 10 TRUE 3.37j. Sii' T026_id IdRS 2[ 6} ~ ~.~28; _ 2.3I I ~ (UE__j T 2 11 Jg2]_0_0_.OXS 2L 7j 0 FAL_SE 0.61) i_ i 1 -0.55j _j T02-7_01.OXS _ 2 {. 7l 2},_ FALSE T02;7_02.OXS_ 2j 7[ -0.53l FALSE 1 T02-7_03.OXS 1_ 2! 7j 3! FALSE _1 -0.26 ! l ~ T02-7 04.OXS 2 1! 4i F [S5 l -6.17 ~ ~ ~-6 2, ~ l ~ ~ ~ Td5-7_d5IORS 2, 7]" 5[~F 't 58 I~~~-0.65I -0.7I ~ T62-7,_dd~OXS I 2i 7l 6 TRUE i 8.58f 55I~- ~ 1 7 T057 df!DRS~~~~i ~[ 7} -TRUE l~ 11706I 17.h 7 2 7 ~ T02-7 08 dR57 2I- ~~- 7 8, TRU5 l 2558! 29.7" ~i ~ TOM 050RSI 2l 1{l~ ~ iiU5 j 2035 20 5 i T ~ i T ~ 9 TdM iOTORS 2i 7l 10 TRUE T ii42 13.4 i f62[i1.yS 2[ ~~t[___11_fRUE] 16.99' 17 [ ] 2 T02-7_12._OXS _ 2j 71 12[_TRUEj 8 CS} 14.7j[_ 8.9 2: 71 13! TRUE i 14.67l T02f_13.OXS_, 2! __ 1 ig TRUEj 13.47g_13.5[ j T02y_14.O_XS 7 ) T02-7_15.OXS 2j 7J 15i TRUE 39.19 39.2{ T05-4_00.OXS 5 4j_ 0] FALSE 0.49 {_ _g T05-4_01.OXS 5{ 44 il FALS_E 1 -0.81L_ T05-4 02.OXS I Si 4 2! FALSE ' -0.86l ~I 4 ~3I~ FALSE 0.02i I T05(0iDRSM ~ 5 T653_d@S {__ 5{_ 4l _4I] [S$~ -1.02[__ -1.0 __.4 T_05_-4_05.OXS_j Sj 4{ 5_TRUE_j 8.91J __ 8.9 _q T0_5-4_06.OXS __5C 4! 6__TRUE j 71.38l 71.4 j _ __ _ 47.4q _ i T05-4 07.OXS 5! 4 71_TRUE. l 47 36j 4 5! 4, 81 TRUEj 26.25; 26.3: 1 T05-4 08.OXS ~ 2_7.10j__ _27.1[ ~[ ] Td5IO9.dRS- ~5{~ 4[~5[TRUE ~ T05-4_1_0.OXS__1_ 51 4l 10{TRUE 4.81 { 4.8 T05-4 11.OXS-51 4I 11[ TRUE 6.70 6.71 l i ~ TfT ~I~~7~ T05!5 00IdXS Si 5' OI~f^[55T 0 f05}5}ildKS1 5 5 1LF3L55_ -2.78 T05-5_02.OXS_,j 5! 5 21_FALS_E -1.73j J _0.39 _ _ _ { T0_5-5_03.OXS _j 5j SL 3; FALSEj 1 T0_5-5_04.OXS i Sj__ __ 5! 4[~. FALSE ' O.59; 0.6, j T05-5_05.OXS [ 5[_ 54 51_ FALSE 0.44 0.4l [ T05-5 06.OXS I Sj 5; 61 FALSE _ 0.51, _ 0.5{ j T05-5 07.OXS i 5; 5! 7 TRUE 1.17i 1.2; 'OI i id5-~S d8 TORS i sl 5I 8-TRUE ~ ~T3Ml TpS[d@S f _5I~ ST 9[_TRUE 1655 10.9 _j.. ~ 3 T05-5_10.OXS I Sl ST 10! TRUE I 6.4 51 6.41 i Page 3 of 3 2/3/97

SLDA Source Term Cdculation from TWSP Gamms Log Data - 4" 1WSP Data i SAMPLE iTRENCH! TWSP : DEPTHI > Lc 1 U-235 j-~U-235 i q - --}--- y-MALL MEd5i > 3 FTN 7 ~ ~ U i i t (feet) ~i ~ -- UCilg ~i~ pCI/gN~ ~~ ~~~ ~ ~~ ~~I- ~~ T05-5_11.OXS i Si Si 11j TRUE 7.59: 7.6! T05-5 15~dXS j ~ ~si-~5I 12 ETRU5 - 2T34I 2 3I~~ l ~ ~ ~ ~ ~ j ~ Td5-5 iiOXSR 51 5l 13" TRUE~i 25X1i 29.4i j ~ ' T05-5_14.OXS~~ I 5l 5: 14 TRUE I 165.49, 165.5! ) T05 5_I5' ORS T Sj Si isI-~TRUE l 131.95^ 13270 { ~ ~ ~ ~l[ di~F LY5 l 1.15[ ~ ~ ~ T652_ 0. RS 6: 4 i 4 il FALSE I -1.69} T052 0'1.DXS~ 6I l ~~ [_2[F [5E i -1.19j [-~_[ii~~- T65[d2[OXS[ 6I ~ 4 T0M_03 0XS _6 4j 3(FALSEj__ -1.56[_ j T06-4_04.OXS 6: 4l 4! FALSE [ -0.18 ) -0.21 l ~I 4I SI# [5E~ -0.29[ -0.3) ~[ T052_6570X5 ~ 6 Td~6 4 Od'Oks-~l 6: 4l 6i FALSE -0.87 ' -0.5 ~~ T05I 7.OXS 67 di 7[FLSE- -0.1A -Olii ~ ~ 4 8I_F._[_5E_ _.4_._-0:8_2t ~ -0:si T. 6_6IO8.O_X5...__~_6.__ 4i T ~ _a 6) 4J___9JALSE__-0.07J __-04 T06-4 09.OXS _! 3 T06-4_10.OXS~ 4j 10j FALSE -0.65I -0.6' i 6l Td62 1T.OXS l 6! 4 iij TRUE 0.831 - 0.8 ~i- ~ ~ ~ Td6[I2.OXS ~~E-6 4 12! F'5[55~~~~ Es8i -0'.3 ~ ~ ~ l~ ~ ~~ ~~ T06-4 1'3.dXS i ~ C 4I 13 FALSE ! 0.08 0.1 l i 7 6 TU6[i470XS I ~6! 41 14 FALSE 1 ~ 618 d2' ~~ I ~ ~ ~ ~~ 0.9 l ~~ 106Ii5.OXS I~ ~ 6i 4! 15! TRUE I 0.89i ~7.7 T '~ ~ l i Td6I_16'OXST 5i di 16l~TRU5 ~7.f i ~ X[_[,}[__] ]___ AS J T 7[d1dXS" N. _. 7l _ _ __4! _ ~{FALSEJ_ -3.51 : T-~~~'.'_'~~~~~_ ) 3 Td7Id5.OkST 7N 4 5fF[55~' -2.27 -2.3; i Td7[06 dRS I~ 7i 4 5I~5 ~LS5 0.38 0.41 j ~~ ~- T 7I67.OXS~ 7i- ~ ~ 4i 7! FALSE ' O.51 0.5: I 1072_ 8[.OSS 7{~~ ~% 5{_~ FAl.5~E[~~ 0.74 0.74 [ ~ T07-4_09.OXS,]_ 7j 4{ 9; TRUE j _1.51L 1.5; } 71 4l 10; TRUE 35.18i 35.2 t l T07-4 10.OXS T0fIfi.dk5 7' dl ~111 Fhi.5h l 0 0si 0.0! l Td7[1XOXS._. !^ .-. 7i - iU ~~~11 FALSE i 0.261 0.3: ~i ~ ~~ ~~ N5P7%s~C6U [~~~~~~~7;~[~ T07I_14 OXS]NT 7 4 14! TRUE ' 5.91] 5.9 5 O! FALSE -0.83! N5P755~CdOSI~ 7I Sl 1! FALSE -0.08 ' b i N 5PfM5'COiTAT 7i si ~~ii~F^LSEl{ 0.93l l l 55I)f-6s~C6URt 7f 51 3i FALSE -1.39! i i ~~ 7~~FALS5 -1.56l -1.4i I~ ~ N5Pf~05 C UNI 7i si 4 ~~ N5W-d5'DOUSi 7f~~ Si-~ SI~p LS'5 6i0di 0.0 i ~ ~ 0.4b ~~ ~ NSPf45 Cd_O.RT.. .. 7.i _ -_.-. 57 6 l_F. AL_ SE_I- 0.44! -- TWSP7-05__ COUNT 7 51.. 7LFALSEj 0.22 E. _ 0.2. i _ _ __J _ _ _ 1 G TWSP7-05 COUNT _ 7i 5: 8I TRUE ! 0.74! 0.7i V Page 4 of 8 2/3/97

SLDA Source Term Calculation from TWSP Gamma Log Data - 4" TWSP Data l _ _S_ AMP _LE.__._ [ TRENCH ! TWSP _DEP_TH__i.__> Lc__ ! U-235 ! U-2_35 _ _ _ _ l. _ _ _ _. _ ( D ~ ~ ~ i l r (feet) i-I pCi/g i pCi/g i ~ TWSP7-05 COUNT 71 5' 9, FALSE i -0.51 ! -0.5 ^ 7097 01i- ~I-~ TWsP7-05'CDONi~ 7 5 10[~F [sE~~ ~ 12.83I~~12.8! ~~$~~~ 0 ~ TW'SP7-05 COUS ~~~~~7I 5 11I~TRL,E ~ ~ TVV5P7 05 CO' uni-7I ~5I~~~~~15l~TRUE f'~~65.07i~6f1! ~ T07-6 00.6XS-~ 7!~ 6i OIF [SEl -2.96 : 1 ~ 1 6-~ ~61 1T Fd[55~l -48.40-l ~ ~~ 0 S T 7%_025kS]~ 77 ~! 2j FALSE ! -22.Til ~i~ 6 2 ~ T07 6_03?DMS 7! Gl 3IFXLSE ~ -28.8il i T07 6 Oi!OXS- ~~ fi~ 6f~~~~4 7 FALSE -31.09' -31.1 : l T07-D_05.OXS j 7! 6I 5 ~ F^l.5Ej ~ -10.08; -10.1 l ^~f~~ Gl F LSEj_ 'i36[ 33i (( T07-6_d6[OXs((~~~~7I 6 7; 6! 7l FALSE -0.45 -0.4 ! I T07-6 07.OXS~~ 7I~ ~5f 8T ~F [5E-~d39 -6.4 I ~ ~~ [ - T 7-6 08.DRS ~ ~ -8.70 _._ -8.Y l ~ ~~ ' ~ Td7 6 09 DXS~i 7 6I 9; FALSE i ~ I_~_-- 9 ~ ~ 11[_TRUEYy~-24.27i _- __24.3 : ~[ ~ ~ ~ T07-6 i1.OXS I.. -- _7i 6! ~ .. _ p_ _ Id7-6 14 TORS'._.. _._. 7 ! _ ___ 6 _13i F^[5$. i _-5.86 _ _ _ -5.9[__.___I_~~~~ ~ ~ ~ Td9I00!OXS. ' f____ 9~^~~~i Di~ ~F [SE 7-~ ~~0?73I_~_ I ~- ~ ' ~ ~ ~ 4 p a g a - - - _ -. FALSE 0.85! I t V T09-4 02.OXS 9; 41 2l ~ 3[ FALSE ! 1.22' T09-4 03.OXS i 9, 4' T09IO4 TORS _ __9I 41._.__ 4I. F l.sE.I _. d 65 I_ _ ~057i ~ ~ 7 06.0 S i~~9 4I __6I_~TRUE_ . _5.04.!- _ _ 5.07~~ 7~~^ ~ ^ T094 08.OXS i 9. 4I sl TRUE' I 5.75I-5'8 E-~~ T09 4 09?OXS I'~ ~ ~~ ~~ 9~ d! 9ETRUe i-~ ~7.1a" ~71 F- ~~ T09[10!DXS7 9; 4I TRUE T 138 ~3.4 10]EF [SE I~~0:35 - R[ T 9[66.OX5 9' SI d ~ 1 T09-5 01.OXS.- 9 5!~~~5i~FXE5El T717~- ~ T ~~ I ~~- ~ ~ . g. g-z, - - g g - __ ! - - - Si FALSE -0.67: i 5 9 T09-5 03.OXS I _. - _ T09 5 05.OXS...I,.~._9 ~~ ~ l SI~l-X[SER. ._M23' -0.2! I 1 ~ ~ ~~~ 5 ~ ~ ~ T69[67.DXSi 9 ~] 7i FALSE ! 0744! 0.4! j 5 ~f SJ 8I~TRUE I 0.78l 0.8I l - ~~ ~ T09IO8'~OXS7 9 T09ID9 TORS i 9; 5t 9i FALSE i -0.41! -0.4}E T09[10. ORS R 9i 51 10j FALSE I -0.77i 0~ -0.8 l ~ T69II~ ~.ORSN ~I 5l ~il[F i.S5] -0T23I -0.5I i ~ ~ 1 9 ~~~ TidI60. ORS ~l 10T 9I 0j F Ls5T -1.04I I-I TIO 9 01SDMS 10! 9 1i FALSE -0.35 ; i i ~ !'~ ~T' ~iOI - 9 2I~F [S5'I -153 ~ ~~-~~i ~ O T10 9 diDAs i Page 5 of 8 2/3/97

SLDA Source Term Calculation from TWSP Gamma Log Data - 4" TWSP Data C _. ___SAMPL. E_ ____.,! _T_RE_N CH,:. _ __ _P,i_D_EPTH.. i _ _> L_c.._.,!_ . U-235. r TWS ._ i__..._.2_ _.. _.;____ _ _L____j ALL MEAS ! > 3 FT I (feet) f pCi/g I pCi/g i ~ -Y~~~ T10-9_03.OXS i 10: 9, 3j FALSE t -1.07i T10-9_04TOXSR 10I~9I 4i FALSE ! -0.7AI~~~-6.7 F-TiO 9 05?OXS'~ 10l 9{ ~5I~FA[SE] -T25l -12 ~ ~--I ~ ~ ~ 6; _ FALSE l - -2.97j-.._-3.0;.- _.T- __ _ _.. Ti0-9_06.OXS. _. ' ' -_.10I ~~--. 93 2 ~ ~ ~5[I ~8 F [ SET -6.55[ -0W i~~~ ~ ' ~ T10-9_08.OXS 10! ~EF[SEi -0T5sl .0.6; T10 9 09.OXS~ ~ T-50l-~~~~9 9 TiO-9 i ~OXS i-105~ ~~9 " 109hESE1 -052M -N ~ Tf0-9 13.OXS_ _ _1T[.__ 9i 33[_FA[SEi ~ ~ ~ - ~~ ~.ii i ~ __ _-_ '.06 0 ~ -0 p._ _ 2 ~ T10 9_i370XS ~ ~~IOF 9 ~i31 FALSE ! -2.28 ~ ~ ~2.3 - ~ ~ ~ ~ ~ TiOl0 00.OXSR~ ~l0I 10; Oj FALSE ! -2,21i - ' ~ ' ~ ~ ~ ~ - ~ ~ ~ 10; 10; 1 EF LSE~ i~ 0.50I~ ~ ~~ E ~ ~~ .j TidiO 0I~OXS ] -~10[~ ~I67 ~f~FALSEi ~i 29 - I~ N~~ ~ ~ ~ T1030 02.O'XS ~~ i T1010 d3.6XS 10l 10 3 F LSE I~~ ~~ -1134i I 7~~ ~ ~ ~ ~ ~~ I T1010 04.OXS I ~ ~~ ~10! ~~iO"~ 4[FALS5~l ~3.24 ~ -I.2 I I '~ ~~ j ~ ~ ~ [ ~ ~ 30 '~iOI 5EF^[Ssl~ -3.72I-3.'7 I ~ ~ ^! ~ T1D10 05.OXS ~ ~ 3 01 T10f0 06fOXS 7. _ g_~~' tog _y_F i_ SET-~ T6.68I 'l.7I ~ ~ ~~ I I ~ 6 gg-gg gp_ T50iO[08.OXS~[~~~~IO[ 10 8! FALSE : 1.10: 1.1: 4 } T10id 09.OXS._.,i _ _ 1 l ~ tdt 9' FALSE,.__ -0.53I ~~ ~~d.~5 I -~ ~ ~ 50i 11[F[SEI -05i[I~~06 T10iO_11.OXS R ~ ~~ ~ 10 -0.5. l ~ ~ 0.58 ~^~T '~ T10i012.OXS. I- ~idC ~ (0 ~12i.. FAL_SE i 7 __y _ 9 g gg ~ ~~~ g T1'010 i4.OXS._ E_ Id 141. FALSE !__ 0 51I~ 0._9_ __._. T-. _. _. _. ~ ~ 10; p__.___ T10ii 3.'OXS~ ~J 70! ~~51i 3IF LSE i~~~-T~i8N~~ ~ ~ T1051 04.OXS i 10: 11' 4[~F [SE i -1.93I -1.9: ~ ~~ ~ 11!~ l T101i 05.OXS. i.._ 10; _ -_ SI~F [SE.m._._-_ 0.15l 0.2, ~I-8 ( ~ -i!8[ ~ [] T1K1[07.OXS ~ ]d((1T{ 7((F5LSE! T1011_08.OXS _ ' 10: 11! _83__FALSEj -1.95L_ _-1.9 J__ T1011 09.OXS_ [ -- 1 9; 10;. _ - -.1 i -. FALSE i.. -0.71 ; -0.7i j T10ii I2.OX'S 10; 11j 12: TR'UE 1.89i~ 1.9 - I[-~ ~ Tidi1 1I.OXS~ 10. 11! 11l FALSE l 0.15! 0.1 ~ ~ TIO11 i3?OXs~ ~ ~~~~id[~~iit ~ ~ ~13IFALSE 7f.83[~~ -118 ~ ~ ~ ~ - TiOI1[Id.~ ORS'~~ !~~ '0 ; 11h 14[~ FALSE 0.96 1.0; ~ ~ 1 ! _ _TU"-

1. [TI~

15!~F [Ss~I~ -1.'56 1.~2"^ ~ $ ~ ~ ~ TI0I~1 15.OXS 1 F' [SEl.u_ li.08! - ( --. 0.1! 16 (- Tfoi[18.OXST. -~-'~50 _-11t I8i~F5[SE~^~~ ~ iT44 ! -1.4 ! i. O Page 6 of 8 2/3/97

f SLDA Sourca Term Cilculition from TWSP Gamma Log Data - 4" TWSP Data ._ _ SAMPLE _ _ IRE _N,pQ _,,TWSP_! D{PTy_J > Lc _( U-235 LU-235 i [ ! ALL MEASj _pCi/g : { 3 FTi. j _ __1__ 1 1 (feet) 1 I pCi/g l T1012_01.OXS 10; 12! 11 FALSE I -0.47L~ T- ~~ ~ TiO12_02.OX5 l 10i 12j 2f~FKL55 -0.37i T50I2 65IOXST~~ 10[t 12l 3 -1.63i i ~ Tidi2[0I.OXS] iO 12l 4Q[ FALSE [5E -1J0i -1.4 ~I- - ~~ ~ ~~I 51F[55 -1.51I~~ tit 5 I T10i2 05DXS l idi ~~ 12 ~ TidI2 06.OXS 10 12l 6!~FE[S5 i ~ ~ ~- 62 -0.6 Ti612 d7 OXSR[ ~~ ~ 10 12] 7j~FI~557-0.34U d.3i Bi Fdi. SET ~~-3.33!~~-3!3 - ~ l TidI5 65?DRS~I iOI 12i Ti652 05.DX5] 10i-12i 9!FiSEN -2 08I~ -2.II ~ ~ TI0i2 i0.dkS~ l 10' 12; 10: FALSE l ~0.36I 0 3I~ ~ ~ ~ ~ ~ ~ 12f 11[F[55j 0 08l OTil j TiOI2[i1.Ok5] 10 ~ 121

12) FALSE 1_

-0.71i -0.7i_ i T1012 12.OXS-[ 10[I tid 12 i3.DRS 10 12 13j FALSE 0.46 0.5i ~ -1T24f -1.2I TiO12[i~COX5}[ 10l 15[ 14{F[5~E 1 ~ T1012 15.OXS i 10i 12i 15: FALSE 0.53 0.5! i i TI0i2 16.OXS i 10 12i 16IFALSE -1.50! -1.5 f~~~~ ~ U ~ 1 -1.60 -1.6! TI652i7DkS] 10 12! _7J[FALSQ Tj0J2_1,8.OXS_j 10l 12j . FA_L_SE ! -2.50 l -2.5! 18 4 T1012 19.OXS 10I 12! 19; FALSE i -0.99[' -1.0: ~ TiOT2 26.DRS 1 07 12i-5di~f^[55'l 4 32 -0T3 TiUT2[2ii XSY f[ 12i 2i[-~F^[5E'I -1,32l -1.3 C - Y ~ ~ 10L 13j OFFEE55 l ~51 l l TI0i5 06.dRS Tidi(OT. ORS]j_ 10L 13l 2 2I]f[55_j 0.14 { i 7 f[ -1.92 j __J j t FALSE l T1013_02.OXS _ 10: 13: T1013 03.OXS 10; 13: 3j TRUE T 1.82j TIDI3 di~Ok5 10" ~i3 4l FALSE T -1.45 E -1.4i !~ ~ TiOi3 05?OXS ~fdf 13 5i FALSE i 0_.3_2_---1.6ij 0.3! _ L' tidf3_06.OXS_ 10] _ _13j 6! FALSE 1 -1.57[_ T1013 07.OXS 1dj 13 71 FALSE ! -2.80! -2.8! ~ I ~ 13i 8i F I.5El -2.34i -2.1!~~~ ~ C Tidi3 05DXSl~~ 10 TI0f3 09.dXS 10i 13! 9: FALSET~ -2.85! -2.8! ~ ~ ~ ~ tid 13 iO.Ok5 10l 13! 10[~F [5El -1.02 l -1.0; ~~ 'd70i d7j l- ~ ~ N0?3 11 Oks7 10! ~i3i~ 11I~FA[55- -1.96I li.91 i ~ ~ ~ F L5E hD13 1EDXS i'Di 13! 15 [I ~ TI6i'3 i5 dXS~~1 ' ~ idi 13t 13 FALSE l 0.00! 0.0[ ~ ~ T16i32id.~OXS7~ 1 01 I3I 14fF[55-[ -2.75I -2.7I-l Tidi3 iSTOXS 10'! 13; 15i Fi~5$~l 0.5 0.1 [~ i ~ Ti0i3 I6D kS [ ~iDi~ 13) 15[FX[5l5] __ -1.13[ -1.1[ j ~ T1013_17.OXS j 10j __13L__ 17LFALSE] -0.89j -0_.93 { T1013_18.OXS I 10! 13! 18! FALSE i -2.611 -2.6; i TidI3 557dk5~~I 16I 13) 197F [55 ; d7di -0}I { ~ ~ 105 ~ i3: 20I~F [SE7 -1.45i -1.5! i fi6i3 20DXS] 13,l 21] FALSE l 0.43 ~ 0.4[;. TiO13 2iT6XS 10; y g _ _-p_ ._t 1 t-i I i i I t Page 7 of 8 2/3/97

SLDA Source Term Calculation from TWSP Gamma Log Data - 4" TWSP Data i i .__a.___ l _.._ p __L_... 2.___.__ _ _____ ____j__,_ _. i_ U _~235__V___255 [ D X _TSU_ilM R_ e_._.._ _qI-i ~ ~ - ~ - ~ T~ 1 ..__3 5 { t l t ALL MEAS! > 3 FT j___ }._____. ___.___....__l___.l_..--_ j j pCi/g I pCl/g [ AVERAGE U-23. 5 CONCENTRA_ TION, pCi/g_. _ - i j 2.84! 4.58, l, .__..._.r----'~~7----- P---- 1 r l L. _.. _.1 l MAX AVG TOT U CONC (ALL DEPL U), pCilg I 238.89 384.67i i ~1 ~~i 1306.06* 1481.4si -~ ~I ~~ S_M_M__. _~_~' ~_ ~.. _~T _~ ~ ~ i i 4 .p ___...4 + I i } I I ..d __._1 i ST(Ds { ____[ _ ___ j______ { I j 326.51 370.36J ))[_]___ MIN AVG TOT U CONC (ALL ENRICHED U), pCi/g l 59.72 96.17l t i t i M X SING [E MsNSURskl$hT OF U-s$57pCiIg~~i I 16539 1s539 ~ ~ l ~~~ ~ ~ MAX _ TOT U EQUIV (ASSUMING U IS DEPL), pCi/g 13901.50,_13901.50; _ _ i. _ _ M_A_X TOT.U E_QUIV (AS_S_U.M,ING_U_IS ENRICHE_D), pCi/g _ 3475_.3_8,!._3_ _475_.38 ' __{____ _ 7_._ _ p L _._ _ _. 4 u l i i AVG Trench 10_U-235 CONCENTR_ATI_ON _. I __ __ _ _. N -0T80! -0.87I _ [ ~ O i O Page 8 of 8 2/3/97

O O O SLDA Source Term Calculation from TWSP Gamma Log Data Part 2: Two-Inch TWSP Data j i t I s January 23,1997 i Prepared By: i Thomas E. Potter i Radiation Protection Consultant 4231 Jenifer Street, N.W. Washington, D.C. 20015-1959 l Supplement to Report Number 92-043.226 l

(~~h r% Q V U C' SLDA Source Term Calculation From W/SP Gamma Log Data - 2" TWSP Data TWSPGAMB.XLS-SLDA SOURCE TERM CALC FROM TWSP GAMMA LOG DATA-5 SHEETS i '~~ ~ ~~ ~ ~ ~~ SHEET 2-2" TWSP DATA l' i I L i. AVERAGES COMPUTED BELOW ARE BASED ON MEASURED U-235 CONCENTRATIONS FOR MEASUREMENTS THAT EXCEEDED MDA. FOR RESULTS LESS THAN MDA. CONCENTRATIONS ARE ASSUMED TO BE A FRACTION OF MDA, I AS INPUT BY USER: ._]_ _ ____ _ 5jU-235 MDA, pCUg 3 0.5 FRACTION OF MDA ASSUMED FOR NON-DETECTS _. ( AVERAGE' 15 AND TOT U CONCENTRATIONS MAX TOT 3 IF ALL U IS ASSUMED TO BE DEPLETED U. MIN IS IF ALL U IS ASSUMED TO BE ENRICHED. AVERAGES ARE_ _ COMPUTED FROM INDMDUAL MEASUREMENTS TABULATED BELOW IN THIS SHEET. ALL U-235 MEASUREMENTS. A4AX OF 1993 OR 1995 _ . -235 MEASUREMENTS >3 FT DEEP, MAX OF 1993 O_R 1995_1__ U 8.5: AVERAGE U-235 CONCENTRATION, pCi/g 10.3 AVERAGE U-235 CONCENTRATION pCVg~ kikX AVERAGE ThiU CON'CdNTRATIONIh ~ . 697.1 SIAX AVERAUE TOTA [_ U CONCENIRATION, pCilg S40.6 __178.5 MIN AVERAGE TOTAL U CONCENTRATION, pCVg. _ _ -. - _ _ _ _ _.. _.. _ _ MIN AVERAGE TOTAL U C_O__NC_ENTRATIO__N, pC_Ug 215.3 ALL U-235 MEASUREMENTS,1993 U-235 MEASUREMENTS >3 FT DEEP,1993 6.1 VERAGE U-235 CONCUNTRATION. pCVg 7.5 [ VER Gd(5235 CONCENTRATION,pCUg 500.5 MAX AVERAGE TOTAL U CONCENTRATION, pCVg _, _ 4 MAX AVERAGE TOTAL U CONCENTRATION, pCVg 592.0 128.2 MIN AVERAGE TOTAL U CONCENTRATION pCVg 151.6 iMIN AVERAGE TOTAL U CONCENTRATION.pCUg Y ALL U-235 MEASUREMENTS,1995 U-235 MEASUREMENTS >3 FT DEEP,1995 7.0 AVERAGd U 23bbN NTRAI pCUg l _ 5.9[ AVERAGE U[_235 CONCENIRATION pCUg_ I 483.5 MAX AVERAGE TOTAL U CONCENTRATION, pCi/g 574.7 ' MAX AVERAGE TOTAL U CONCENTRATION. pCVg 1258SilN AVER GE TOTAUtiCONCdriTRATION, pCVg 147.5 Mihi VERAGd~TdTAi UjdNCENTR IlOh4[g ~ _ [ __._ _ L -_ -. _. - . ~ ._L. AVERAGE U-235 CONCENTRATION BY TWSP. CALCULATED FROM INDIVIDUAL MEASUREMENTS BELOW IN THIS SHEET. AVERAGES ARE FOR MEASUREMENTS >3 FT BELOW SURFACE I j i i Page 1 of 20 2/3/97

I O O O SLDA Source Term Calculation From TWSP Gamma Log Data - 2" TWSP Data - MAX 1993,1995 - - 1993 ONLY - - 1995 ONLY - I ] 3 FT_AVGTWSP] ']_ _] ] _.))]l]_ '"~ TRENCH TWSP TWSP [ { TWSP j_ >3 FT AVG >3 FT AVG _pCilg ___,.______} pCi g l } pCilg ]__ ~3 ' ~ ~ ~ ^~ ~ ~~2 '19.1 9 14.6 1 3 2.9 2.9 1.8 1 4 4.2 2.1 3.9 1 'S ~ 6.3 5.8 6.0 1 6 22.2 14.3 17.2 2 1 16.1 9.7" 11.0 2Q2 16.1 10.0 11.8 2 3 41.6 39.6 24.9 2 4 21.9 16.4 15.8 3 1 1.8 1.8 1.8 4 1 1.8 1.8 1.8 ____.2_ . _ __ _ _13. 5 11.0_ 4 8.1 5 2 2.6 1.8 2.6 5 3 11.3 6.3 9.1 6 91.2 57.6 45.1 _. --- ---. 1 6 3 2.5 2.5 1.8 3 7 1 23.7 9.5 18.7 7 2 2.0 8 1 1.8 1.8 1.8 9 1 3.5 3.5 1.8 9 2 3.4 3.4 1.8 i _ ~ _. 10 1 10.6 '~ 5.8 8.3 10 2 2.0 2.0 1.8 l Page 2 of 20 2/3/97 l

O O O SLDA Source Term Calculation From TWSP Gamma Log Data - 2" TWSP Data - MAX 1993,1995 - - 1993 ONLY - - 1995 ONLY - j[~" ~ ~ ~ ~~ ~ ~ ~ ~ ~ ~ ~ ~}~ TWSP TRENCH TWSP TWSP' TWSP l _ _. _* 3 FT AV. G -~ ~ ~ ~ ~ ~ ~ -- " _ ~ ~ ~ ~ ~_ >3 FT AVG ~ 3 FT AVG ..J. 10 6 1.8[ _ _ 1.8 1.8 L i 10 7 1.8 1.8 1.8 [ 1.8 1.8 t 10 _.8 -..-_ 1.8 t k i _._ _ ___..l . ~. _ i j j ~ _______L..._- [ ..] _.. _ _ t _ _ _ ~ _ _ l i p_. f [ .___m._. . _ f _ -_ __.. - _] 7 [ i r -I Page 3 of 20 2/3/97 [ I; I

i l O O O SLDA Source Term Calculation From TWSP Gamma Log Data - 2" TWSP Data l TRENCH i TWSP i DEPTH MEASURED MEASURED - MAX 1993,1995 - - 1993 ONLY - - 1995 ONLY - ~~ f 1993 U-235 1995 U-235 U-235 U-235 U-235 U-235 U-235 U-23', U-235 U-235 U-23S ~ j { ALL MEAS >3 FT >3 FT AVG ALL MEAS >3 FT >3 FT AVG ALL MEAS >3 FT >3 FT AVG l I ft pCUg pCitg l pCUg pCUg pCUg pCug pCUg pCVg pCUg pCi/g pCUg 1 1 1 4.7 4.7 4.7 1.8 ,8 1 1 2 1 18 1 1 4 1.8 1.8 1.8 1.8 1.8 1.8 1 1 5 1.8 1.8 1.8 1.8 1.8 1.8 1 __ _ 1 1 6. _.1.8 _ _ _1.8 1.8 1.8 1.8 1.8 1 1 1 7 1.8 1.8 1.8 1.8 1.8 1.8 1 1 8 1.8 1.8 [ 1.8 1.8 1.8 1.8 1 1._ __ _9g____ _ _ _ 1.8 1.8 1.8 1.8 1.8 1.8 1.8 1.8 1.8 1.8 1.8 1.8 g 1 1 10 1 1 11 }~~ ~~ 1.8 1.8 1.8 1.8 1.8 1.8 1.8 1.8 1.8 1 2 1 1.8 1.8 1.8 r_ 1 2 4 1.8 1.8 1.8 1.8 1.8 1.8 1 2 5 68.4 68.4 68.4 1.8 1.8 68.4 68.4 1 2 6 45.1 13.6 45.1 45.1 45.1 45.1 13.6 13.6 1 2 7 7.9 8.0 8.0 8.0 7.9 7.9 8.0 8.0 6.8[~i-- ~ ~- ~ 6.5 ~ ~ 6'.i 5I8 6.8 1 2 8 6.1 6.8 6.8 1 2 9 1.8 1.8 1.8 1.8 1.8 1.8 7 1 2 10 1.8 1.8-19.1 1.8 1.8 9.4 1.8 1.8 14.6 1 3 1 1.8 1.8 1.8 1 3 2[ _ _ _ 1.8 1.8 1.8 1 3 3 1.8 1.8. 1.8 1 3 4 1.8 1.8 1.8I 75 ~ ~ ~ ~ ~ ' ~ 1.5 1.5 ~ ~ ~ 1 3 6 ._ _ 3.5.__ _ _ 3.Sii __ 3.5 3.5 ~~ 1.8 ~ 1.8 1 3 5 _3.5. _._ _ 1.8 _ 1.8 ( __ _ _ 1.8 1.8 _ 1.8 1.8 1.8 __ 1 3; 7 1.81 1.8 1.8 1.8 1.8 1 8 1 18 ,8 1 3: 10: 1.81 1.8f 1.8; 1.8 1.8 1.8 Page 4 of 20 2/3/97

f .~ ~. = -. - O O O SLDA Source Term Calculation From TWSP Gamma Log Data - 2" TWSP Data TRENCH : TWSP { DEPTH MEASURED ! MEASURED i - MAX 1993.1995 - - 1993 ONLY - - 1995 ONLY - U[-235_ { U-235_ l U-235 _ -235 _ U-235 U ] 1993 U-235 j 1995 U-235 U-235 U-235 U-235 U-235 l t ALL MEAS >3 FT >3 FT AVG. ALL MEAS >3 FT >3 FT AVG ALL MEAS >3 FT >3 FT AVG I pCUg pCUg pCUg pCi/g ! pCUg pCUg pCUg pCU[ ' pCiig ~ ft pCUg pCi/g 11 8.9 ;_ _ _ _ 8.9j 1.8 L _ 1.8 1.8 8.9 2.9 8.9 8.9 2.9- _. _. 11_ _.3 __1 3 OL __ _ _ _3.6p _ _ 1 4 3.6 1.8 __..1 4 2 1.8 1.8 1.8

  1. ~

~ 4 8 ts _1[_ _ 4 5 4.8 4.8 4.8 ___ 1.8,.~

1;8 ;_E_E Zj.81 11 Z ;;;

1 4 4 i_ _11:81_ 1.8 Ei ~~ 1.8 1.8 4.8 4.8 4 8_ _1.8 _ 1.8 _]_ 4.3 _4.3 _ _12.5__ 12.5 1 4 6 12.5 12.5 12.5 1.8 1.8 1 4 7 4.3 4.3 4.3 1.8 1.8 1.8 1.8 1.8 1.8[ _ 1 5.2 1.8 1.8 5.2 5.2 _ 5.2 1 4 9. . _ _ 5.2 g 1 4 0 0 1. -.8 1.8 1 5 1 1.8 -. __1 1 5 2 . _._ _ 1 1 5 4 1.8 1.8 1.8 1.8 1.8 1.8 5 1.8' 1.8 1.8 1.8 1.8 1.8 p _.__4___.__.{' 1 5 l 6 1.8 1.8 1.8 1.8 1.8 1.8 _ _. 1. _. 5 1 _____4 1. 8.2{ __7.9 8.2g ____ 8.2 8.2 _ _ _ 7 8.2 7.9 7.9 1 5, ..8__ 21.9' 25.2 25.2 25.2 _ 21.9 21.9 25.2 25.2. 5 1 5, 9 3.7 3.7 3.7 3.7 3.7 1.8 1.8 1 5i 10 1.8 1.8 6.3 1.8 1.8 5.8 1.8 1.8 6.0 1 6 3 1.8 l 1.8 1.8 1, 6 4 1.8 1.8 1.8 1.8 1.8 1.8 11 6 5 1.8 1.8 1.8 1.8 1.8 1.8 1I 6 6 6.5 6.5 6.5l 6.5 6.5 '15 ~ ~~' ~ 1.8 1 6! 7 ~~ 23.1 5.0 23.1 23.1 23.1 23.1 5.0 5.0 6I~ 8 41.9: 64.2 64.2 64.2 41.9 41.9 64.2 64.2 11 1! 6I 9' ~~ ~11MI 44.5 44.5 44.5' ~ 11.4 11.4 44.5 44.5 Page 5 of 20 2/3/97

O O O SLDA Source Term Calculation From TWSP Gamma Log Data - 2" TWSP Data TRCCH l TWSP DEPTH MEASURED MEASURED! - MAX 1993,1995 - - 1993 ONLY - - 1995 ONLY - _ ' 235 _U-23{ I L-j 1993LL235 1995 U-235 U-235 U-235 U-235 U-235 U-235 U-235 U-235 _ _ l lALL MEAS _ >3 FT >3 FT AVG,ALL MEAS >3 FT >3 FT AVG ;ALL MEAS _ _ 3 FT >3 FT AVG ft pCug pCvg i pcug pcug pcur I pCug pcug pcug 1 pcug pCvg pcvg 1 6i 10' 13.4i 13.4 13.Q 22.2 13.4' 13.4' __ 14,.3 __ 1.8L 1.8 17.2 I __ 4.1 1.8 2' ~ 1 4.1 4.1 1 2 1 2 1.8 1.8 1.8 2 1 3 3.5 3.5 1.8 3.5 2 1 4 11.9 11.9, 11.9 1.8 1.8 11.9 11.9 2 1 5 16.6 51.2 51.2I 51.2 16.6 16.6 51.2 51.2 g I 3.8 3.8 2 1 6 31.8 3.8 [31.8 _ _31.8 1.8 1.8 15.4 15.4 31.8 _ _ _ 31.8g__, 2 1 7 15.4 15.4 15.4 2 1 8 12.5 12.5 12.5 12.5 12.5 1.8 _-_1.8 1.8 1.8 1.8 1.8 1.8 1.8 2 1 10 t _ _ --. _.. p. - .3 . _ _3.9g _ _4.3g_4 4.3 4.3 3.9 3.9 . _.. 2._ 1.. 11 4.3 .1. _, _12 2 14.7 7.6 14.7' 14.7 16.1 14.7 14.7 9.7 7.6 7.6 11.0 2 2 1 1.8 1.8 1.8 T 2 2 2 1.8 1.8 1.8 2 2 3 5.6 5.6 5.6 1.8 2 2 4 1.8 1.8 1.8 1.8 1.8 1.8 1.8 1.8 2 2 5, 8.3 8.34 _ __ 8 3 _8.3)_ _ 8.3 14.2 _14.2 6I 9.2. ._14.2_ 2 ~~ 2t . 7 27.1:_. _ 18.3 27.1 27.1 27.1 27.1 18.3 18.3 . _14.2 _ __ 14.2 9.2 9.2 4 2. 21 2 21 8 6.0 24.6. 24.6 24.6 6.0 6.0 24.6 24.6 2; 21 9 4.7 20.8' 20.8 20.8 4.7 4.7 20.8 20.8 2 2 10 10.0 12.9 12.9 12.9 10.0 10.0 12.9 12.9 2 2 11 20.5 20.5 20.5 1.8 1.8 20.5 20.5 2 2 12 21.3 21.3 21.3 21.3 21.3 1.8 1.8 g______. 16.1 10.0 10.0 10.0 1.8 1.8_ _ _ _ _11 3 2 13 10.0. _ _ _10.0. _ 10.0 18 i 2 8 2 3 1 2 3 3 16.6 16.6 16.6 1.8 2 3! 5 1.81 1.8 1.8, 1.8 ~ -['l [8'[ _ _1.8 '- ~ [ 18' 1.8 ' 1.8 ~' 2 3; 4 1.8 4 1.8 1.8 i Page 6 of 20 2/3/97 P ~.. -,. - - - - - - - -,. -

~. O O O SLDA Source Term Calculation From TWSP Gamma Log Data - 2" TWSP Data i l TRENCH.TWSP DEPTH MEASURED MEASURED 1 - MAX 1993,1995 - - 1993 ONLY - , - 1995 ONLY - _ 1993 U-235 1995 U.235 U-235 U-235 U-235 U-235 U-235 U-235 _{ U-235 U-235 U-235 { ALL MEAS >3 FT >3 FT AVG ALL MEAS >3 FT >3 FT AVG lALL MEAD >3 FT >3 FT AVG ft pcilg I pci/g pcilg pci/g pg I pg pci/g pcug l pcug pceg pci/g I ~ 2 3: 6 13.5' 5.3! 13.Si 13.5 13.Si 13.5' 5.3 5.3 I~ ~ ~ 14.8' '~14.8 ~~ ~ ~ 2 3' 7 10.0 ~14.8' 14.8' ' 14.8' 10:0F 10.0 2 3 8 17.7 13.0 17.7 17.7 17.7 17.7 13.0 13.0 f 27.1 27.1 27.1, 27.1. 12.5 12.5 2 3 9 27.1 12.5 2 3 10 275.0 160.0 275.0 275.0 275.0 275.0 160.0 160.0 2'_. 3 ~ ~11 10.7 ~~ 18!6'~ ~ ~ ~ 18 6 ~~18'.6 ' ~ ~ ~ 10.7' -~10.7 ~ ' ~ ~ 18.5~ is.5~ ~ ~ ~ 5 8 ~ ~~ M '~ M( p m ma me 2L 3 13 23.7 ] 33.7' ][33.7 )) 33.7[. ~ 23.7 23.7 33.7 33.7 -_.[__3 _14 ___ ___ 38.7 38.7 38.7 41.6 38.7 38.7 39.6, 1.8 1.8 24.9 2 1.8. _ 1.8 1.8 2 4 __. 1_. 2 4 2 1.8 1.8 1.8 2 4 _ _ 3. 5.3 5.3 1.8 5.3 ___2[ 4 4 1.8 1.8 1.8 1.8 1.8 1.8 2 4 5 3.9< 12.4 12.4 12.4 3.9 3.9 12.4 12.4 2 ___ ___ 3__ _ _ _ 6 41 3 _16.9; 41.2 41.2 41.2 41.2 16.9 16.9 _ _ _ _.2 4 7 11.4 40.9[ 40.9 40.9 11.4 11.4 40.9 40.9 .._2._ _i _ _ _ _8 ,_38.8 _27.7j 51.6 51.6 51.6 51.6 27.7 27.7 51.6 _ _38.8;1___ _ _ _ _ 38.8 23.9 23.9_ 2 4 10 _ __ 24.9._ 23.9 _ 24.9 _ _24.9 __ _ _ 24.9._ _ 38.8 _ _20.3 20.3 2 4 9 20.3 38.8 24.9 4_ 4 _ 12.7 12.7 1.8 __ 1.81_ 12.7 12.7 2 _. 12.71 ._g 4[ _ 11 9.21 ___ 9.2 0.2 1.8 1.8 9.2. 9.2 2j 4 12j_ _ _ _ _ 6;L 6.0 6. 3 1 1 1.8 1.8 1.8 3 1 2 i 1.8 1.81 ._ _1.8 3 1 4 1.8 1.8 ~ ~ ~ 1.8" ~ ~T.8 ~ 1.8 ~T.5 { __ ~ ~~ 3 1 5, 1.8 1.8 1.8 1.8 1.8 1.8 6f 1.8 1.8; 1.8 1.8 1.8 1.8 3 1 3 1 71 1.8 1.8! 1.8 1.8 1.8 .. 1.8 1.8 1.8! 1.8 1.8 '. ~ " '.8 ~~~1.8 1 31 11 8 1 Page 7 of 20 2/3/97

O O O SLDA Source Term Calculat;on From TWSP Gamma Log Data - 2" TWSP Data TRENCH TWSP DEPTH ' MEASURED MEASURED ' - MAX 1993.1995 - - 1993 ONLY - -- 1995 ONLY - __ _ 1993 U-235 1995 U-235 U-235 U-235 U-235 U-235 U-235 U-235 _ U-235_ U-235 . -235 _ U . ALL MEAS >3 FT >3 FT AVG -ALL MEAS >3 FT >3 FT AVG ALL MEAS >3 FT >3 FT AVG R pCUg pCVg f pCug pCug pCVg pCVg pCUg pCWg l pCug pCUg pCVg 1 9 j 1.8! 1.8 18 1.8 1.8 1.8 1.8 1.8 _i, 1 1.8 __ 1.8l _ ___ _. 1.8 1.8 3j, 3 2 1 l_ _1.8. y _ __ _ 1.8 3 2 2 1.8 _ _ j _ _ _ __ 1 3 __ 2. 3 1. 3 -~ 2' 5 1.8' ~ ~ ~ ~ 1.8 ' ~ ~ '~ ~ ~ ~ 1'8 1.8 ~~~ ~ i.8 1.8 ~ 1.8 1.8, 1.8 1.8 1.8 1.8 '31-~ 2 6 .._ 13.0.. - -. 8, 13.0 13.0 13.0 13.0 1.8 1.8 3 2 1 I~ '1.8 ~~~~i.0 ' ~ - ~ 1.8' ~ i.8' ~ ~ ~7.8 -~1.8 3 2 10 ~~ 1.8{I. 1.8 9.4 4 1 2 1.8 ~ ~ ~ ^i'8 ~~~ ~ ~ ~ ~ ~ ~ ~~5 ~ 1 4 1 3 1.8 1.8 ......_1.8 4 --'1 5 '[ _.1.8 1I8 1.8 1.8 1.8 1.8 4[ 1 7 1.8[_ ~~ 1.8] ]~} ~ ' ~~~ '1!8' [1.8 ___ 1.8._ _ _ _.1.8 I 1.8 1.8 4 1 8 1.8 1.8 1.8 1.8 4 1 9l 1.8 1.8 1.8 1.8 1.8 1.8 4'~ 1 11I ~ ~1.8 ~ 1.8 1.8 1.8 1.8 1.8 12l ] ']^ f _ _ 1.8 1.8! ~ ~ ~ 1.8~ ~ 1.8 1.8 1.8 ~ ~4 1 41 1 1 31 1.8j 1.8i 1.8 1.8" 1'.8 1.8 I l'~ ~ 1.81 1.8 1.8 1.8 1.8 1.8 1.8 _._. _ 1.8 __ __1.8 4 1 14g g g i~ l 1.8 1.8 1.8 4 2 2 4 2j 3 [ 1.8 ~ ~ 1.8 1.8 4 2j 4l i 1.8 1.8 1.8 1.8 1.8' 1'.8' 4 2I 5! 1.8 1.8, 1.8 1.8 1.8' ~~1.8" - ~ }' 4 2 6! I f 1.8I 1.8i 1.8! 1.8 1.8 1.8 Page 8 of 20 2/3/97 .m.- m

O O O SLDA Source Term Calculation From TWSP Gamma Log Data - 2* TWSP Data TRENCH l TWSP DEPTH MEASURED MEASURED < - MAX 1993,1995 - - 1993 ONLY- - 1995 ONLY - 1993 U-235 1995 U.235 U-235 U-235 U-235 U-235 U-235 U-235 U-235 I U-235 ~ E U-235

ALL MEAS

>3 FT >3 FT AVG ALL MEAS >3 Fi >3 FT AVd ALL MEAU 3 FT >3 FI AVG ft pCitg } pCilg f pCi/g pCUg pCUg pCilg pCi/g pCilg pCug pCUg pCitg 4 2 7 1.8 1.8 1.8' 1.8 1.8 1.8 ~ ~ 4 ~ 2 8' ^~ 1.8 1.8 ~ 1.8 ' ~ ~1.8 ~ ~ ~ ~ -^1 ~ ~ 1.8 1 4 2 9 1.8 1.8 1.8 1.8 1.8 1.8. 4 2 10 4.8 4.8 4.8 1.8 1.8 4.8 4.8I-~~ 4 2 11 12.4 38.0 38.0 38.0 12.4 12.4 38.0 38.0 4 2 12 35.5 31.4 35.5 35.5 35.5 35.5 31.4 31.4 4 2 13 39.8 11.7 39.8 39.8 39.8 39.8 11.7 11.7 4 2 14 1.8 1.8 1.8 1.8 1.8 1.8 4 2 15 7.6 7.6 7.6 1.8 1.8 7.6 7.6 4 2 16 36.9 36.9 36.91 13.5 1.8 1.8 8.1 36.9[_ _ 36.9 11p 5 1 1 18 1. 5 1 3 1.8 1.8 1.8 5 1 4 1.8 1.8 1.8 1.8 1.8 1.8 5 1 5 1.8 1.8 1.8 1.8 1.8 1.8 5 1 6 1.8 1.8 1.8 1.8 1.8 1.8 5 1 7 1.8 1.8 1.8 1.G. 1.8 1.8 5 1 8 1.8 1.8. 1.8 1.8 1.8 1.8 5 ~ 1 9I 17 2 17.2 17.2 1.8 1.8 17.2 17.2 ~ _.__5.___1}___ 10 51.0 ~ 51 5 51.0 ~~~ ~~[1.8' ~ ~ ~ ~1.8 ~~ ~~ 51.0' 5170' ~ 5 1 11 24.5 43.7 43.7 .43.7 24.5 24.5 43.7 43.7 _y 2 64 2 2 5 1 5 2 1 18 18 8 1.8; 1.8 1.8' 1.8 1.8 1.8 5 2 4 5 2 5 l 1.8{ 1.8 1.8 1.8 1.8 1.8 5 2 6 8.6' 8.6 1.8 1.8 8.6 8.6 8.6' + 1.8; l 1.8-1.8 1.8 1.8 1.8 5 2 7 5 2 8i i 1.8! 1.8 1.8 1.8 1.8 1.8 Page 9 of 20 2/3/97

O O O SLDA Source Term Calculation From TWSP Gamma Log Data - 2" TWSP Data TRENCH TWSP DEPTH MEASURED' MEASURED { - MAX 1993,1995 - - 1993 ONLY -- _ __ __- 1995 ONLY -- _ -235 U 1993 U-235 1995 U-235 U-235 U-235 U-235 U-235 U-235 U-235 U-235 _, U-235, >3_ FT AVG _ ALL MEAS >3 FT >3 FT AVG ALL MEAS >3 FT >3 FT AVG ALL MEAS >3 FT ft pcug pcug pcug pcug ocug pcug pcug pcug pcug pcug pcvg S 2 9 1.8 1.8 1.8 _ _ _ 10 ' _ _ _ __ 1.8,. 1.8j_,__1.8_____ ________L_____ ,1.8l 1.84___ _ 1.8 5 2 1.8 1.8 1.8 I. l 2_ 1 1.8 2.6 __0 _ __ __ 4 8 __ _ __1 8. _ _____ _ 8 1 5 3 2 1.8 1.8 1.8 5 3 3 1.8 ~ ~ U8 ~~ 1.8 5 3 4 1.8 1.8 il T.~8 1.8 1.8 5 3 5 1.8 1.8 1.8 1.8 1.8 1.8 5 3I ~ 6 ~ ~ ~ 1.8 1.8 1.8 - ~1.8 1.8 1.8 5 3 8 7.8 7.8 7.8 1.8 _ 1.8{[ 7.8 7.8 ~~ 1.8 ]~]1.8- ~ - ~~~ 5 3 7 1.8' 1.8 ~ 1.8 1.8 5 3 9 7.0 50.6 50.6 50.6 7.0 7.0 50.6 50.6 5 3 10 33.7 20.5 33.7 33.7 33.7 33.7 20.5 20.5 5 3 11 10.5 10.5"~ ~~ ~165" 10.5 1d55 ~ 1.8 1.8 5 3 12 1.8 1.8 1.8 1.8 1.8 1.8 I 5 3 -13 1.8 1.8 11.3' 1.8 1.8 6.3 1.8 1.8 9.1 6 1 1 1.8 1.8 1.8 6 1 2 1.8 1.8 1.8 6 1 3 1.8 1.8 1.8 6 1 4 1.8 1.8 1.8 1.8 1.8 1.8 6 1 5 1.8 1.8 1.8 1.8 1.8 1.8 ~ ~~ 6 ~~1 ~~ '6" 1.8 1.8 1.8 1.8 1.8 1.8 7 153.2 153.2 153.2 1.8 1.8 153.2 --.-.153.2 6 _-.1 6 1 9 31.1 181.7 181.7 181.7 31.1 31.1 181.7 181.7 6 1 10 70.3 12.0 70.3 70.3 70.3 70.3 12.0 12.0 6 1 11 25.9 15.4 25.9 25.9 25.9 _ 25.9 ] 15.4 15.4 _. _.6 __1 12j _. 11.2 44.9 44.9 44.9 11.2 11.2 44.9. 44.9 6 1. _ 13: ,_ 85.4 85.4 85.4 91.2 85.4 85.4 57.6 1.8 1.8 45.1 6 2 il 1.8 1.8 1.8 Page 10 of 20 2/3/97 ~

O O O SLDA Source Term Calculation From TWSP Gamma Log Data - 2* TWSP Data TRENCH TWSP DEPTH MEASURED MEASURED! - MAX 1993,1995 _ - 1993 ONLY-- __ _-- 1%5_ONLY _ __ 1993 U-235 1995 U-235 U-235 U-235 U-235 U-235 U-235 U-235 _ U-235 _ _ -235 U-235 i U 7 ,1 ALL MEAS >3 FT 23 FT AVG ALL MEAS >3 FT >3 FT AVG ALL MEAS >3 FT >3 FT AVG I ft pCilg l pCilg pCilg pCi/g pCi/g pCi/g pCug pCilg pCi/g pCi/g pCilg 6 2 3 1.8 1.8( _ _. _ __1.8 6 2 4 1.8 1.8 1.8 1.8 1.8 1.8 6 2.. 5 1.S 1.8 1.8 1.8 1.8 1.8 6 2 1.8 1.8 1.8 1.8 1.8 1.8 6 2 6 . 1.8. 7 1.8 1.8 1.8 1.8 1.8 6 2[ .8 1.8 1.8 1.8 1.8 1.8 1.8 6 2 9 1.8 1.8 1.8 1.8 1.8 1.8 _ _1.8h _ _ 6 2 10 1.8 1.8 1.8 1.8 1.8 6._ _ 2 . 1.8 _ _ _ 1.8 1.8 1.8 1.8 11 1.8 6 2 12 27.7 27.7 27.7 27.7 27.7 1.8 1.8 6 13 3.6 3.6 3.6 3.6 3.6 1.8 ._ -. 2 1.8 6 2 15 1.8 1.8 4.1 1.8 1.8 4.1 1.8 1.8 1.8 6 3 1 1.8 1.8 1.8 6 3 2 1.8 1.8 1.8 6 3 3 1.8 1.8 1.8 4 6 3 4 1.8 1.8 1.8 1.8 { 1.8 1.8 l 6 3 5 1.8 1.8 1.8 1.8 1.8 1.8 6 3 6 1.8 1.8 1.8 1.8 1.8 1.8 i 6 3 7 1.8 1.8 1.8 1.8 1.8 1.8 6 3 8 1.8 1.8 1.8 1.8 1.8 1.8 6 3 9 1.8 .8. 1 1.8 1.8 1.8 1.8 . _ _...1.8 .. __...,.8 _.1.8! _. _1.8 6 11 1 1.8 1.8 _. _6._._. __3g _.12. 1.8_ _. 1.8 _ _ _..j _ .1.8 1.8 1.8 1.8 7 6 __. 3,. 1.8 . 1.8 13,.- 3 1.8 1.8 1.8 1.8 1 .~ 6 3 16I ~ 6.7 6.7 6.7 2.5 6.7 6.7 2.5 1.8' . _ _. 5__ _.~ _.1.8 1 7 1! 2' i 1.8 i 1.8 l 1.8 Page 11 of 20 2/3/97

O O O SLDA Source Term Calculation From TWSP Gamma Log Data - 2" TWSP Data TRENCH TWSP DEPTH MEASURED MEASURED' - MAX 1993,1995 - - 1993 ONLY - _ { _ _ _ _-- 1995 ONLY _ _ _ 1993 U-235 1995 U-235 U-235 U-235 [ U-235 U-235 U-235 U-235 -235___ _U-235 _ U tB-235 ALL MEAS. >3 FT >3 FT AVG ALL MEAS >3 FT >3 FT AVG ALL MEAS >3 FT >3 FT AVG i 7' 1 3 . 1.B i. .__ -..1.8i i 1.8 1 5 8 .8 ._7 __ _ 8 _ _ _ 7 1 7 113.3i' ~~ 113.3 ~ 113.3 1.8 ~ 1.8 ~ ~113.3 - ~ '13 3 1 ~ ~ ~ . - - _~ 3 1.8 ~^~ 1.8 ~ ' ' ~ ~ ~~ 41~7 43.7 ' ~ ~ ~~ ~ 7 1 8 ~~ 43.7 - 43.7' 43.7 7 1 11 1.8 1.8 1.8 1.8 1.8 1.8 7 1 12' 1.8 ~ ~ ~ ~1.8 ~ 1.8 ~ 1.8 1.8 1.8 7 1 13 1.8 1.8 1.8 1.8 1.8 1.8 ._1 . __ _10.3 9.5 18 1.8 18.7 7 1 10.3 1.3 10.3 23.7 7 2 2 1.8 1.8 1.8 i 7 2 3 1.8 1.8 1.8 3 7 2 4 1.81 1.8 1.8 1.8 1.8 1.8 7 2 5 1.8 1.8 1.8 1.8 1.8 1.8 7 2 6 1.8 1.8 1.8 1.8 1.8 1.8 7 2 7 1.8 1.8 1.8 1.8 i8 1.8 I t__ l 7 ~2 9 ~ ~ ~ ~ ~ 1.8 1.8 1.8 1.8' ' ~ ~ ~ 1.8 ~ ~ ~ ~ 1 13 ~~~~' ~ ~ 7 2 10 1.8 1.8 1.8 1.8 1.8 1.8 7 2 11 5.3 5.3 5.3 5.3 I~~ ~ 5.3 1.8 1.8 j _ _ _. - 7 2 13 _1.8[, _ 1.8 1.8 1.8 1.8 1.8 7 2 14 8 __ _ _,8 g ___ 8 1. 7 3 1 1.8 1.8 1.8 7 3 2 1.8 1.8 1.8 7 3 3 1.8 1.8} 1.8 7 3, 4 t 1.8t,_ _ 1.8 1.81 1.8 '1.8 ~~~1.8 Page 12 of 20 2/3/97

O O O SLDA Source Term Calculation From TWSP Gamma Log Data - 2" TWSP Data 1995 ONLY-TRENCH TWSP DEPTH MEASURED MEASURED - MAX 1993.1995 ---- - 1993 ONLY - 1993 U-235 1995 U-235 U-235 U-235 U-235 U-235 U-235 U-235 U-235 U-235 U-235 ALL MEAS '3 FT >3 FT AVG. ALL MEAS >3 FT >3 FT AVC 'ALL MEAS >3 FT >3 FT AVG 1.8 1.8 1.8 1.8 1.8 1.8 7 3 5 .15.5 14.2. _. __15.5. _ _ 15.5 15.5 15.5 , _14.2 _23.4 7 3 6 14.2 7 3 7 6.7 23.4 23.4 23.4 6.7 __ 6.7 23.4 {~} 7 ~3[ [ 8" 1.8 _ 1.8 ___1.8l 1.8. _1.8 __1.8 1.8 1.8 1.d 1.8 1.8 4 7 3 9 1.8 1.8. 1.8 _ 1.8 1.8 1.8 1.8 7 3 10 _ _ _ _ 9.5 9.5 9.5 9.5 _ _ 1.8 __16.8} g 7 3 11 9.5 1.8 E _ 7 3 12 __.21.9; _16.8 _ _.21.9; 21.9 _ _.._21.9 21.9 16.8 7 3 13 15.6! 10.5 15.6! 15.6 15.6 ..15.6 10.5 10.5 . _ _ _ _7 ]((9.4"~ ~ ~ ~ 9.4 [9A _ _ _ 1.8 4 8 1.8 9.4 9.4 7 3 14 . _ _,5 3 1 ~~~I ~~ ~7 3 17 1.8 1.8 7.8 1.8 1.8 6.1 1.8 1.8 6.4 8 1 1 1.8 1.8 1.8 8 1 2 1.8 1.8 1.8 8 1 3 1.8 1.8 1.8 8 1 4 1.8 1.8 1.8 1.8 1.8 1.8 8 1 6 1.8 1.8 - 1.8 1.8 1.8 1.8 1.8f ~~8 ~~~1 7 1.8 1.8 1.8 1.8 1.8 8 1 8,___..__. _.. _ _ _1' 1.81 1.8 16 ~1.8 1.8 1.8 p 1.3 1.8 1.8 1.8 9____ 1.8j _ _ 1.8 8 1 L _. _ _ _8 _ _._ _ _ _10 1.8; 1.8 1.8 1.8 1.8 1.8 1 8 1 11 1.8 1.8 1.8 1.8 1.8 1.8 4__ ____p_.1 12 1.8 1.8 1.8 1.8 1.8 1.8 8 1 18 1 1 8l __. _ _ _ y_ 8 1 15 1.8 1.8 ~~~ 1.8' "~ ~1.8I 1.8 1.8 8 1 16 1.8 1.8 1.8 1.8 1.8 1.8 8 1 17 1.8 1.8 1.8 1.8 ~ ~~1.8 ~~ 1.8 ~~~ 8 1 18 1.8 1.8I 1.8 1.8 1.8. 1.8 ~~~ 1.8' ~ " 1.8' ~ '1.8 i Page 13 of 20 2/3/97 [

m.. O O O SLDA Source Term Calculation From TWSP Gamma Log Data - 2" TWSP Data TRENCH ! TWSP. DEPTH ' MEASURED MEASURED j - MAX 1993,1995 - - 1993 ONLY - _j _-- 1995 ONLY - _ 1995 U-235 { U-235 U-235 U-235 U-235 U-235 U-235 U-235 U-235 U-235 1993 U-235 ALL MEAS >3 FT >3 FT AVG : ALL MEAS >3 FT >3 FT AVG ALL MEAS >3 FT >3 FT AVG ft } pCVg pCilg pCilg I pCVg pCilg l pCVg pCilg pCVg pCi/g pCilg pCug 8i 2 1 1.8l 1.8, _] _ __1.8 I 8 2. 2 1.8 1.8 1.8 L 1.8 1.8 1.8 2 3 [ _ _ _.. .__8g _ 8[ 2 4 1.8 1.8 1.8 1.8 1.8 1.8 8 2 5 1.8 1.8 1.8 1.8 1.8 1.8 t _ 8 j _ _ _ 1 1. 1 - _ l _. _ _ _..... _ _ _ 1.8[ _ -. - + _ - - _ - _ -_.. _ _ _ - _ ..8, 2 8 1.8 1.8 1.8 1.8 1.8 8 2. 9-1.8 1.8 1.8 1.8 1.8 1.8 8 2 10 1.8 1.8 1.8 1.8 1.8 1.8 8 2 11 1.8 . 1.8 __ 1.8 _1.8 1.8.. 1.8 2 1.8 1.8 1.8 1.8 1.8 1.8 _8 _2._, _ 12} _ _ 1.8 1.8 1.8 1.8 _ _1 8 _ 1.8 1.8 8 13 1.8 8 2 14 1.8 ,1.8 1.8 _1.8 8 2 15 1.8 1.8 1.8 1.8 1.8 1.8 ~ 16I~ ~ 1.8 1.8 ~ 1.8 1.8 1.8 1.8 ~ ~~'8[ [ 2' __ 17 . [____ 1.8 1.8 1.8 1.8 1.8 1.8 8 2 i 8 2 19 1.8 1.8 1.8 1.8 1.8 1.8 1.8 1.8 1.8 - 1.85 ~ ~ ~-- ~~~ ' 1.8 ~ 1.8 9f 1 4 1.8[ 1.8 _p J.8 1.8 1.8 1.8 9 1 5 1.8 1.8 1.8 1.8 1.8 1.8 9 1 6 5.0 5.0 5.0 5.0 5.0 1.8 1.8 9 1 7 1.8 _;~ ~ I '1.8 ~ ' ~ ~ ~ ~1.5'- ~ ~1.5' ~ ~ ~ ' ' ~ I ~ 1'8' ~~ 1.8 ~ 1.8 ~ 118 ~ ~ 1.8! I 9 1 8: 1.8 " 1.8 1.8' 10.7f j 9 1 11 j 3.9j 3.9j 3.9. 10.7; '~ ~ ~ ~ ~~ ~ 5 ~ '1.8' ~]~~_ 9{ 10.7 l 10.7 10.7 1. 9 1 1.8 _1.8 1 10' 3.9 3.9l _ ._ _ 1.8 _ _ _. 1.6 _ _ _ _ _1.8 9j_ 1.8 1.8 3.5. 1.8: 1.8i 3.5 j~ b f I "1.8! } ^ 118 ~ ~ ~ ~ ~ ~~ ~ 9 ~ 2: 1 1.8 t Page 14 of 20 2/3/97

O O O SLDA Source Term Calculation From TWSP Gamma Log Data - 2" TWSP Data TRENCH j TWSP DEPTH MEASURED MEASURED - MAX 1993.1995 - - 1993 ONLY - - 1995 ONLY - 1993 U-235 1995 U-235 U-235 U-235 U-235 U-235 U-235 _ -235 . _U-235_ U-235 U-235 U _L_ MEAS _. AL . _ 3 FT >3 FT AVG. ALL MEAS. _ _3 FT__ >3_FT AVG ALL MEAS._ >3 FT >3 FT AVG _ _ _ 9. .,, _ _ _. 1.8j.__. _ 1.8 9 2 2 1.8 1.8 2 3 1.8 ._ 9g 2 4 1.8 1.8 _ 1.8 _1.8 ._ _ _ 1.8__1.8 1.8 9 2 5 1.8 1.8 1.8 1.8 1.8. -. -. 1.8.. - - _ _ _ - 9 2 8 6.1 6.1 6.1 6.1 6.1 1.8 1.8 9 2 9 8.2 8.2 8.2 8.2 8.2 1.8 1.8 9 2 10 1.8 1.8 1.8 1.8 1.8 1.8 3._ _ _ __ 9 2 12 1.8 1.8 3.4 1.8 1.8 3.4 1.8 1.8 1.8 9 3 1 1.8 1.8 1.8 .._._ _ 2. - - -- ---.. 9 3 1.8 1.8 1.8 9 3 4 1.8 1.8 1.8 1.8 1.8 1.8 9 3 5 1.8 1.8 1.8 1.8 1.8 1.8 1.8 1.8I 1.8 1.8 1.8 9 3 6 1.84 9 3 7 1.8 1.8 1.8 1.8 1.8 1.8 9 3 _ 8 1.8 1.8 1.8 1.8 1.8 1.8 9 3 9 1.8 1.8 1.8 1.8 1.8 1.8 9 3 10 1.8 1.8 1.8 1.8 1.8 1.8 9i~ 3 11 1.8 1.8 1.8 1.8 1.8 1.8 1.8 1'.8 1.8 10 1 1 1.8 1.8 1.8 10 1 2 1.8 1.8 1.8 10 1 3 1.8 1.8 1.8 10 1 4 1.8 1.8 1.8 1.8 1.8 1.8 10 1 5 1.8 1.8 1.8 1.8 1.8 1.8 10 1 6 1.8 1.8 1.8 1.8 1.8 1.8 10 1 7 27.5 ~~27.5 "^27.5' ~ ~~ 27.5 ' 27.5 1.8 1.8 10 1 8 22.5 54.7 54.7 54.7 22.5 22.5 54.7 ~ 54'.7 10' ~ 9 29.4 29.4 ~ 29.4 29.4 29.4f ~~ 1.8 ~ ~ 1.8 1 Page 15 of 20 2/3/97

O O O SLDA Source Term Calculation From TWSP Gamma Log Data - 2* TWSP Data TRENCH l TWSP j DEPTH MEASURED! MEASURED l - MAX 1993,1995 - - 1993 ONLY - .- 1995 ONLY,. _ l i 1993 U-235 1995 U-235 U-235 i U-235 U-235 U-235 U-235 U-235 U-235 U-235 U-235 f ALL MEAS >3 FT >3 FT AVG ALL MEAS >3 FT >3 FT AVG ALL MEAS >3 FT >3 hT AS/G l a pcug pcilg pcug pci/g pcug i pcug pci/g pcug pd/g ~~ 'pcsd' ~ pcirg 10 1 10' 1.8-1.8 1.8 1.8 1.8 1.81 10 1 11 1.8 1.8 1.8 1.8 ._ _ _ 1.8 1.8f 1 _ 8 10 1 14 1.8 1.8 1.8 1.8 1.8 1.8 10 1 15 1.8 1.8 10.6 1.8 1.8 5.8 1.8 1.8 8.3 10 2 1 1.8 1.8 1.8 j 10 2 2 1.8 1.8. _4_____. _ _ _1.8 1.8 10 2 3 1.8! __ 1.8[ _. 10 2 4 1.8 1.8 1.8 1.8 1.8 1.8 10 2 5 1.8 1.8 1.8 1.8 1.8 1.8 10 2 6 1.8 1.8 1.8 1.8 1.8 1.8 10 21 7 1.8 1.8 1.8 1.8 1.8 1.8 10 2 8 1.8 1.8 ~ ~~ .8 1.8 ~' 1.8' ~ 1.8"' ~ ~ 1 1.8.' 1.8 '~ 1.8 ' 1.8 1.8 ~~~1.8 ~ 10 2 9 j 10 2 10 4.5 4.5! 4.5 4.5 4.5 1.8'~ ~ 1 1.8

10..~.'2..

' _ _ _. _ _ - _ j __ __ _1.8[ ~11 1.8 ~ 1.8 1.8 1.8 1.8 - ~ ~ 10 2 13 1.8 1.8 1.8 1.8 1.8 1.8 10 2 14 1.8 1.8 1.8 1.8 1.8 1.8 10 2 15 1.8 1.8 2.0 1.8 1.8 2.0 1.8 1.8 1.8 10 3 1 1.81 1.8 1.8 4-_( gl_ - __ } g g 10 3 5 '~~ '1.8' ~~ ~ 1.8 1.8 1.8' ~ ~1.8 ~1.8 10 3 6 1.8 1.8 1.8 1.8 ~1.8 ~~ 18 ~ ' ' ~ 10, 3i 7 1.8 1.8 1.8 1.8 1.8 1.8 101 3 8 1.8 1.8 1.8 1.8 1.8 1.8 1 10! 3; 9 1.8 1.8! 1.8 1.8 ~ T.8 15 ~ 10! 3! 10 ~I~ ~ 1.8i I 1.8I 1.8 1.8 1.8 1.8 Page 16 of 20 2/3/97

O O O SLDA Source Term Calculation From TWSP Gamma Log Data - 2'TWSP Data TRENCH I TWSP ' DEPTH l MEASURED MEASURED - MAX 1993,1995 - - 1993 ONLY - - 1995 ONLY - ) ' 1993 U-235. 1995 U-235 U-235 U-235 U-235 U-235 U-235 U-235 U-235 U-235 j U-235 I ALL MEAS >3 FT >3 FT AVG TALL MEAS >3 FT >3 FT AVG ALUMEAS ~Ui >3 FT AVG ~ ft pCUg pCVg pCug pGg pChg I pCug pCUg pCVg pCug hg pCUd ~ 11 1.8 1.8 1.8 1.8 10' 3l 10 3: _ 12 ___1.8 1.8 ___._ _j___ _ _ _ 1.8 L _1.8{ 1.8 1.8 1.8 1.8 8 1 18 __13 ; _ _ _ ___ __. 10 3 15 1.8 1.8 1.8 1.8 1.8 1.8 10 3 16 1.8 1.8 1.8 1.8C 1.84_ _ __1.8 1.8 1.8 1.8 10 4 1 1.8 1.8 [~~ ' ' ~ 1.8I~ 1.8 10 4 2 1.8 1.8 ~--~~ T 10 4 3 1.8 1.8 1.8 10 4 5 1.8 1.8 1.8 1.8 1.8 1.8 10 4 6 1.8 1.8 1.8 1.8 1.8 1.8 10 4 7 1.8 1.8 1.8 1.8 1.8 1.8 10 4 1.8 1.8 1.8 1.8 1.8 1.8 ._._ 9 +-_____ 10 4 12 1.8 1.8 1.8 1.8 1.8 1.8 10 4 13 1.8 1.8 1.8 1.8 1.8 1.8 10 4 14 1.8 1.8 1.8 1.8 1.8 1.8 10 [ 4 17 ~ ~~16 ~][ ~ _[.[_ _d[_1.[~ [ [_}1.8 [1]5 ] ~ ~ ~ ~~ _ 1.8 13 l ~ 10.. 1.8 1.8 1.8 1.8 1.8 1.8 1.8 1.8 1.8 4 10 5 1 1.8 1.8 1.8 t 10 5 2 j__ 1.8 1.8 1.8 10 5 3 { 1.8 } 1.8= 1.8 _ 1.8 1.8 1.8 1.8 1.8 10 5 4 1.8 3 ..__--_y.---.-_,-._ 10 5 6 f 1.8 1.8f~ 1.8 1.8 1.8 1.8 10 5 7 I ~ ~ ~ ~1.8 1.8I 1.8l 1.8 ~ 1.8 ~ }18 _~]~ ~ ~ 10 5 8-1.8. 1.8! 1.8 1.8 1.8 1.8 Page 17 of 20 2/3/97

O O O SLDA Source Term Caiculation From TWSP Gamma Log Data - 2" TWSP Da'a TRENCH TWSP l DEPTH MEASURED MEASURED - MAX 1993,1995 - - 1993 ONLY - - 1995 ONLY - [U-235 ~ U-235 [ _ U-23{ U-2W[~~5235 U-235 ~ ~ ~ 'f ' 1993 U-235 1995 U-235 U 35 U-235 U-235 _. 3 FT >3 FT AVG ALL MEAS >3 FT >3 FT AVG ALL MEAS >3 FT >3 FT AVG ALL MEAS 10 1.8 1.8' 1.8 1.8 1.8 1.8 .10 ._ 5{ 9___ 1.8. 1.8 1.8 5 10. 1.8 1.8 1.8 10 5 11p_____. __ 22.0 ,_ 48.3._ _ 8.3_ _85.3 _ _ _ _85.3.. 22.0 22.0 48.3 4 1.8 1.8 48.3 48.3 10 5 12 85.3 85.3 85.3 ~ [_]13 _ _11.1 ~ 4.7 [1[1.I ((11.iQi ' ~_~((11[.1 [_11.1 10 5 14 1.8 1.8L _ _ 1.8 1.8 _ ~~~~}[~'-~2[~_]~17 [_ 0 - 5 4 1.8 1.8 10 5. 15 1.8 1.8 1.8 1.8 1.8 1.8 10 5 16 1.8 1.8 1.8 1.8 1.8 1.8 10 5 17 1.8 1.8 1.8 1.8 1.8 1.8 1.8 1.8 11.0 1.8 1.8 7.9 1.8 1.8 6.4 10 5 18 4_ 10 6 1 l 1.8 1.8I 1.8 a 10 6 2 1.8 1.8 1.8 . _ _ _1 0 1 10 6 5 1.8 1.8 1.8 1.8 1.8 1.8 i 10 6 6 1.8 1.8 1.8 1.8 1.8 1.8 10 6 7 1.8 1.8 1.8 1.8 1.8 1.8 10 6 8 1.8 1.8 1.8 1.8 1.8 1.8 10 6 9 1.8 1.8 1.8 1.8 1.8 1.8 10 6 10 1.8 1.8 1.8 1.8 1.8 1.8 10 6 11 ._j_ 1.8 1.8 1.8 1.8 1.8 1.8 10 6 12 1.8. 1.8 1.8 1.8 1.8 1.8 10 6 13 1.8 1.8 1.8 1.8 1.8 1.8 i 10 6 14 1.8 1.8 1.8 1.8 1.8 1.8 10 6 15 1.8 1.8 1.8 1.8 1.8 ___ 1.8 ~~ [ 6 16 1.8 1.8 1.8 1.8 1.8 1.8 10 10 6 17 1.8r-T.8 1.8 1.8 1.8 1.8 10 6 18 1.8 _1.8. _ _, 1.8 1.8. _. 1.8 1.8 _ _.1.8 __1.8 _.8 1.8 1.8 1.8 1 10 6 19 __1.8 1.8 1.8 10 7 1 1.8 1.8 __ 1.8. 10 7 2' ~ ~~ ~~ '1.8 ~~ ~ ~~l 1.8 1.8 Page 18 of 20 2/3/97 . a

O O O SLDA Source Term Calculation From TWSP Gamma Log Data - 2' TWSP Data s TRENCH TWSP DEPTH MEASURED MEASORED - MAX 1993,1995 - - 1993 ONLY ~ _ _ _ -- 1995 ONLY - _ , _ -235 _._,U-235__U-235_ U 1993 U-235 1995 U-235 U-235 U-235 U-235 U-235 U-235 U-235 ALL MEAS >3 FT >3 FT AVG ALL MEAS >3 FT >3 FT AVG ALL MEAS >3 FT >3 FT AVG ft pCi/g pCilg pGg pCi/g pCilg pCi/g pCug pCug pCUg pCUg pCi/g '8 _ _ _10 7... 3 -.. j 1.8. -_..'.8 -. 1.8 1.8 1.8. _. -. _ , _ _10 7,_ 4. L _ '.8 1.8 1.8 10 1.8 1.8 1.8 1.8 1.8 1.8 7 5 10 7 6 1.8 1.8 1.8 1.8 1.8 1.8 10 7 7 1.8 1.8 ~ ~ ~ 1.8 1.8 1.8 ~ ~ ~ ~ ~1.8 ~~ ~' ~ ~ ~ 10 7 8 1.8 1.8 1.8 1.8 1.8 1.8 ~~10 7 9 1.8 1.8 1.8 1.8 1.8 1.8 10 7 10 1.8 1.8 1.8 1.8 ~ 1.8 1.8 10 7 11 1.8 1.8 1.8 1.8 1.8 1.8 10 7 12 1.8 1.8 1.8 1.8 1.8 1.8 10 7 13 1.8 1.8 1.8 ~~1.8 1.8 1.8 10 7 14 1.8 1.8 1.8 1.8 1.8 1.8 10 7 16 1.8 1.8 1.8 1.8 1.8 1.8 10 7 17 1.8 1.8 1.8 1.8 1.8 1.8 10 7 18 j. ___. 1.8 1.8, _ _ _ ____1.8 _1.8 ___1.8, 1.8 10 7 19 _ _ _ _ 1.8 1.8 1.8 1.8 1.8 1.8 10 7 20 1.8 1.8 1.8 1.8 1.8 1.8 1.8 1.8 1.8 10 8 1 1.8 1.8 1.8 10 8 2 1.8 1.8 ._ _} _ _ 1.8 18._ 1 8 3 _ __1 1 10 8 5 1.8 1.8 1.8 1.8 1.8 1.8 10 8 6 1.8 1.8 1.8 1.8 1.8 1.8 10 8 7 1.8 1.8 1.8 1.8 1.8 1.8 _ _.10 _.8. _. 8 _.._.. _ _ _ _ _1.8.. _ _..1.8 ;, _ _, _ {.. __ _ 1.8j,_ _ 1.8 1.8 1.8 ...10[ _, 8. _ - _ _10. _ _ _1.8j ___ _1.8 _ _. 1.8) _ _,1.8I _ _1p..__1.8_. _3_ 1.8 1.8. _ _ 8l 1.8,' 1.8 1.8 1.8 10' 10 8 _11 1.8 ._ 1.8. 1.8. 1.8 1.8 _ _.1.8 10 8 12 1.8; 1.8 1.8, 1.8 1.8 1.8 10 8 13! 1.8i 1.8 1.8 1.8 1.8 1.8 Page 19 of 20 2/3/97

l O O O SLDA Source Term Calculation From TWSP Gamma Log Data - 2" TWSP Data TRENCH ' TWSP I DEPTH MEASURED [ MEASURED - MAX 1993,1995 - - 1993 ONLY - - 1995 ONLY.- 1993 U-235 1995 U-235 U-235 U-235 U-235 U-235 U-235 U-235 U-235 U-235 l U-235

ALL MEAS

>3 FT, >3 FT AVG ALL MEAS >3 FT >3 FT AVG ALL MEAS >3 FT >3 FT AVG l R pCUg i pCUg l pCUg pCVg pCUg l pCUg pCilg pCUg l pCFg pCilg pCVg 10 8 14 1.8 1.8 1.8 _ _.8( _ _ 1 ___ 8 15 ._ 1.8l _ _ _1.8 __. 1.8; 1.8. __1.8 1.8} 10 1.8 1.8 . J ___ _ _ 8 10 8 1

8 8

1.8 1.8 10 8 18 1.8 1.8 1.8 1.8 _ 1.8 1.8 10[ 8 19 1.8. _ _ 1.8. 1.8 1.8 10 8i 20 1.8~ 1.8 1.8' 1.8 1.8 1.8 10 8 21 1.8 1.8 1.8 1.8 1.8 1.8L 1.8 1.8 1.8 I _-.a-... - - _ -- y

  1. 9 M

9 9 L _ _ _ f l 5.9 7.0 AVERAGE U-235 CONCENTRATION. pCUg 8.5 10.3 6.1 _ _ _ 7.2 MAX AVERAGE TOTAL U CONCENTRATION, pCUg 697.1 840.6 500.5 592.0 483.5 574.7 MIN AVERAGE TOTAL U CONCENTRATION, pCVg 178.5 215.3 1282 151.6 123.8 1472 Note: MAX AVG ASSUMES U IS DEPL, MIN AVG ASSUMES U IS ENRICHED __.___{____ MAX {NDIV[ DUAL Ug35 CONCENTRATION _pCug 345.3 345.3 345.3 345.3 181.7 181.7 290052 29005.2 290052g_29005.2 15262.8 15262.8 MAX TOT U EQUtV (ASSUMING U IS DEPL). pCUg g MAX TOT U EQUIV (ASSUMING U IS ENRICHED). pC#g I 7251.3l 7251.3 7251.3l 7251.3f 3815.7 3815.7 t Page 20 of 20 2/3/97

O O O SLDA Source Term Calculation from TWSP Gamma Log Data Part 3: Uranium Activitics and Mass Inventory F f January 23,1997 i Prepared By: Thomas E. Potter Radiation Protection Consultant 4231 Jen!fer Street, N.W. Washington, D.C. 20015-1959 [ t i h-Supplement to Report Number 92-043.226 i

e e G TWSPGAMB.XLS-SLDA SOURCE TERM CALC FROM TWSP GAMMA LOG D TA-5 SHEETS j j-l SHEET 3--CALCULATl0N OF TOTAL URAN! W ACTIVITY AND MASS INVENTORY i l METHODOLOGY: f j 'f i l [ l l ASSIGN TRENCH AREAS TO EACH TWSP BASED ON TOTAL TRENCH AREA FROM SCR AND NtMBER OF TWSPS IN TRENCH. j AS$1GN 1 FT THICKNESS TO EACH TWSP MEASUREMENT >3' DEEP BASED ON MEASUREMENT INTERVAL. j i CALCULATE VOLLME OF ELEMENT FOR EACH MEASUREMENT AS PRODUCT OF AREA AND THICKNESS FROM ABOVE. I ASSIGN U-235 CONCENTRATION BASED ON MEASUREMENT OF FRACTION OF MDA, IF MEASUREMENT < MDA. l ASSIGN ENRICHMENT TO EACH TWSP BASED ON LEACHATE ISOTOPIC ANALYSIS RESULTS; ASSUME NATURAL U FOR NO DATA. '.SSIGN TOTAL U TO U-235^ ACTIVITY RATIO AS FUNCil0N OF ENRICHMENT BASED ON 10CFR20 FORMULA. NOTEi RATIO OF TOT U TO U-235 ACTIVITY IS INSENSITIVE TO ENRICHMENT IN RANGE ABOVE ABOUT 2% ENRICHED. ' ' ~ ~ ~ ~ ~ - - " ' CALCULATE TOTAL U CONCENTRATION BASED ON 0-235 CONCENTRATION AND TOT U TO U-235 ACTIVITY ratio. j ~ ~ ~ CALCULATE TOTAL U INVENTORY FOR MEASUREMENT ELEMENT' VOLUME AS PRODUCT OF TOTAL U CONC, VOLUME, AND SOIL DENSITY, AS$lMED TO BE 1.6 G/CC. 'i {' l i p StM ACTIVITY'BY' ELEMENT ~ TO GET ' TOTAL U ACTIVITY INVENTORY IN ALL TRENCHES. - ~ ~ +l' '- " ~ j{ _ _~ ~~ ~l--~~~--- ' _ - - - - - - - '__

p.._ _

' G U-235/PCI U-235"7.1E8 t

  • 235 * ;1E-12 C /PCI / 3.$78ES ~ (RNH 1970, p. '103, eq 4.66E-07

' ~ ' y NOTE: 2" TWSP AND 4" TWsP DATA COMBINED F04 INVENT 0RY CALCULAfl0N ~'[ ~ ~ '-~ ~~ ~ ~- i l i 6 I I 28 TWSP 0-235 MOA AND FRACTION OF MDA' AS$tMtD FOR MEASUREMENTS <MDA,' U$ER INPUT: '-^~-{ ~ ~ - ~~ ' ' '~'~~ '~ - - - - ~ ~ i 3.5:U-235 MDA, pCi/g~~ ~~ '~ ~ ~ ~ - - ~l - {---~ - - ~ - - ~ ~ - -- - - - ~" t 0.StFraction of MDA g-4 j FOLLOWING ARE ENRICHMENT $ AND TOT U 10 U-235 ACTIVITY RATICS BY TWSP - ~ ' 2* TWSP DATA FROM GEOCHEM REPORT j j [ ~ ~~ - - ~ - - " - ~ ' - ' - - - 4"TWSP ENRfCHMENT DATA IS BASED ON 1995 LEACHATE ANALYSIS' - ~ ~ - - -~ ~ ~ ~ ~ ~ - ~ ~ RATIO OF TOT U T,_O U-2_35 ACTIVITY CALCULATED.F_OR L_ _IST_ED_ ENRICHHENT BY 10CFR20 FORMULA'~ . -. _ - ' - ~ - - ~ ~ ~ _ -,~-- --- ~ - ' - - - ' ~' ~' 3 TRENCH TWSP~ ENR' TOT U/U-235 -~~ ~ ~ ~~~~~ ~ - ~ - ~ - - ~ '---1'-- ^ _ _ _ _._ ' _ '.~. _ _ _ ~. _ ~ - - - ~ ~ ~ - ~ - ~ ~ ~ -~-~-~_ _ _~'~ _- ~ {%U-235 (ACT } ~.._ _ ~ _ _ _ _ - ~ p p 1 2 7.6! 21.5 ] ~ ~~~~ ~~ ~~~~ ~'~ ~ - ~- - '~ - - ~ ' ~ ~ ~ ~ ~ ~ ~ - - - - ~ - - - - ~ ~ ~-~~"l'-'~---- - " ' - ' - - - ~ - 1 3 6.5i~ '21.5' ~3'-' ~~ ~k" ~- Tl- ~ ~ - - ' - ' - ~ -- ~ ~ ~ ~ ~ ~-'- ~ - ~' ~ - ~ ~~ - ~ ~ - - 8 21.5 ~ ~- 7.M ' N' ~- ~ ' ' ^' ~ ~ ~ ~ ' ' ~ ~'--~~ - ~ ~ ~ ~ ~ ~ - ' ~ ~ ~ - - - - 5 ~ 9 1 6-7.6t 21.5" f' ' ~ ~ ~ ' ~ - ' - ~ ' ~ ~ ~ ~~ ~ - - ~~- ~ ~ ~ ~ ~ ~ - ~ ~ ~ ~ ~~ ~ ~~- d I 29.1{-~23.0f f ~ - ~ ~ -~ - ~ ~ ' - ~ ~ ~~ f--~ ~ ~~ ~ ~ 2' 13.8

21. 2 F ~ ~

~ ~ ~ - 2l 3 13.5' 21.3[ [ ~ ~' ~ ' ~ ~ - ' ' 21 4 4.1 '- 23.0j ~ 'g ' ~ ~ ~ ~ 3i~ ~ 1 ' ~ ~ 0.7 ' 43.6 ND, NAT LE ~~- ~ ~ ~ ~~~ '-~~-]~-'~~ ~~ ~ ~ ' - ~ - - - - ~ ~ ~ ~ - - ~ - ~ ' ~ ~ ~ ~ - ~ 3i 2j 0.7^ 43.6!ND,~ NAT U ' ~ ~ ~ ~ ~ ' * ~ ~ ~ ~ ~ ' ~ - ~ - ~ ~ - - - - ~ ' ' ~ ~ ~ ~ ~ ~ ~ ~ ' ~~ - f h. ~~ ~~ d -- ~~ - ~ ~ ~~-~ ~- ~~~ ~ ~ ' - - ' 3 .0 _0 2{i SI 1 8.3 ~21.5-I 3.4 23.5 - ~ ~~~~~ ~ ~ ~ ~ 5: i SI 3! 1.8: 30.0 6! 1! 24.2l 22.4{ + i i 6' 2i 26.0; I i ~ ~ ~ 2.3'! 1.0 38.0[ t t i 6' 3' 7: 1l 23.7: 22.0' I l I 7 2! 11.4! 21.2l l 8.3! 21.4l I 3'! 7; 1 2.Si 25.0: t f I I 8' Page 1 of 15 2/3/97

e e O IREKH 1W5P EkR lIGI U/U-2D l I' i i ~ ~ i f I i

%u-235 ACT t

2" TWSPS! I I l { l j l f f _] ] ~_] ~ ~ } I l 8 4 d.6 t).U, [ I i t - ~ ~ ~~ 9' 1' 5.57 22.11 l ~ 9: 2' 7.1{ 21.51 I t 9 21.4 { { I 10[. 3l 8.0; 35.0l 11 1.3! j 10' 2: 2.5' 25.0l' j l I ~ ' ~ ~ ~ ~ ~ - ~ ~ i 1 10i 3! 3.li 24.2 i 10! 4! 0.7l 43.6lND, NAT U r j 10! 5! 0.7j 43.6'ND, NAT U g ~ ~ toi 6! 0.7, 43.6'ND, NAT U ' ~ ~ - ' ' ~ ~ ~ ' ' ~ ~ - ' ' - ' ~ ~ - ~ ~ ' ' ~ ~ ~ - - ~ ~ 10! 7j 0.7; 43.6!ND, NAT U i - ~~~ 10! 8: 0.7 43.6*ND, NAT U .-.y._ 3 ~~~'8 _.._'7.97 g._'21.4 ' _ _. _ '. ~ _ ~ ' _ _ _ j __~ - ~ ~ - - - '- 1 1 - ~10 ~ 8.0i' 21.4" ~ ~ ~ {. _. _~ ~ f ~~ ~ ~~~ ~ ~ - ~ -~~ _ _. 7 ~ 8.0! ' 21.4+ ~ ~~ ~~ ~~ ^~ t ~ ~ ' ~ ~ ~ ~ ~ ~ - - ~ - ~ ~ - - - ~--- 2 ~ 5 17.6 - 21.5' f' ~ ~-"~ ~~ ~ -' - - ~ ~ - ~~~~ !2~ 6. 14.3' 21.3~ ~~ '-~~ ~ ~ ~ ~ ~ ~ ' ^ -~ --- ~-- - - - - 7 27.6' ~ 22.82 '~' ~' ' ~ ' - - - - - '~~ ~ ~~~~ ~ ~ - ~ ~- " - - " 5' 4 14.1 21.2 ~ i T ' ~' ~ ~-" - - " ~ ~ - - ~ ~ ~ ' ~ - ~ ~ ~ ~ ~ ~ ~ ~' - - ~ ~ - - - - 5 5 37.4i 24.0 6 4 5.2i 22.2 ~ ~~ - - j- - ~ ~ 7 4 '42.31 ~ 25.7' i 76 5 7.41 21.5 7l~ ' 6? ~ ~ 7.8; ~ ~ 21.4- - ~ ~ ~ ~ ~j d ~~~~~f~-~~~~~~~~'~ '-~~~ ~ ~ ~ - ^ 1~ ~~ ' ~ ~ f ~~- ~ ~ - - i ~ 9 - ~ 11 ~.0 L --~~ 21.2 ~~~ ~ ~ - ' ~~~-f~~-~~T-~~~~~ - - ~ ~ ~ - ~ - -' ~ - - - - - - - ~ '~~ - - - - - ~ ~ 9_. _ - p._.11.0 ~'21.2 ~~-~ t ~ 10 10 0.7l ~~ ~ 44~.0,ND, NAT U - ~~Y - ~ --~ ' ~ ~ ~ '~-~-- -~ ~ ~ - ' ' -~~-~ - ~ ~ ~ ' " ~ ~ ~ ~ - ~ ~ 10 '~~9-O.7{ ~ 44.0'ND, NAT U '[ ~~~- -- - -- ~ - ' ~- - ~-- - - ~ - - - - ~ 10 it O.7 44.0!ND, NAT U ~ ~ ~ ~ ~ ~ ~ - - - ~ ~ ~ ~ ~ - - - ~ f g 10 12 0.7' 44.0:ND, NAT U ~ 13' -.- - '.'_ 44.0'ND, NAT U_ _- _~-.._ ~ ~ ~ ' ~ ~ ~ ~. ~ ~ ~ _ _ ~ - ~ ~ ~ ~ ~ ~ ~ ~ ~ ^ ~ ~ ~ ~ + - - ~ ' - - ~ ~ ^ _ -- - ~ - - ~ '--- ' O.7 10' 2" TWSP DATA AND CALCULAt10N OF ACilVITY BY MEASUREMENT ELEMENT- ^ ~ ~ ~ ~ ~ ~ ~ ~ ~ '-"-- TRENCH TWSP DEPTH 993 U-235 995 u-235TR AREA 'TWSP-VOL 1993 0 1995 U '1993 U ~1995 U 1993 U '1995 O' 93 U-235 95~U-235 ~93~U-235 95 U-235 } } AREA" ~

8Y TWSP BY TWSP ;8Y'TWSP ~.8Y'TWSP BY TWSP ~
BY'TWSP~

i ft pC1/g I pCl/g I ft2 FRAC ft3- ~ Cl- 'ti g-g i g - g i 'g - ! ~ ' -' o ~1' g/ft2 t g/ft2~ l i i '- 't - - ' - - b-1 1 4' O.0 0.0 10472' O.09091 952 1.7E-03F 1.7E-03; 7.2E+02 7.2E+02{, -~ ~ ~ - ~ ~ ~ - ~-~~I-' ~~ i 1 1 5 0.0 ~ 0.0 10472 'O.09091 952 1.7E-03i~1.7E-03 7.2E+02 ~7.2E+02' 1 1 6 - 0.0F 0.0 ' 10472 0.09091' ~ ~ 952 1.7E-037'1.7E-03 7.2E+02 ' 7.2E+02 ~~ 1 1! 7l 0.0f' 0.0 10472 0.09091 952 1.7E-03 1.7E-03 7.2E+02 7.2E+02 1 1! 8' 'O.0[ 0.0 10472 0.09091 952 1.7E-03 1.7E-03 ~7.2E+02 7.2E+02 -~ ~ - ~ ~ -~ ~ 1! 1! 9; 0.0; 0.0 10472 0.09091 952. 1.7E-03 1.7E-03l 7.2E+02 7.2E+02 ^ ~ ~ 1 17 10: 0.0} 0.0 10472i 0.09091 952' 1.7E-03 ' 1.7E-03! 7.2E+02 7.2E+02i ~- - -~ 952{( 1.6E-03[ ~ 6.3E-02[~ 4.6E+02'~ 1.8E+04)1.7E-03f'1. } 2.8E+02 ~]3.0E-01 3.~ 0E-01 1 1' ill 0.0' O.0' 10472i 0.09091 ~ 952 7.2E+02l li 2' 4! 0.0f 0.0i 10472? 0.09091-1.6E-03 4.6E+02l 1 2 5! 0.0' ' 68.4l 10472l 0.09091 ~ 952[4 2E-02l 13E-02 1.6E-03! 1 2 6' 45.1l 13.6 10472l 0.09091 1.2E+04 3.6E+03! 952l 7.3E-03i 7.4E-03 9521 2.1E+03 2.1E+03! it 2: 7: 7.9' 8.0! 104721 0.09091 Page 2 of 15 2/3/97

e e O da IW5P DATA AND CALCULATION OF ACTIVilY BY MEA 5URLMLN1 ELLMLNI j [ i i i l, i i VOL 1993 0 1995 u 1993 0 1995 u 1993 U IRENCH TWSP DEPTH i 993 u-235 995 u-235TR AREA. TWSP BY TWSP BY TWSP ~ ' BY ' TWSP ~ :BY 'TWSP ^ }BY 1995 0 93 U-235' '95~u-235 '93 U'-235 95 U 235 ! AREA i .BY TWSP ~ l ft I pCl/g pCl/g I ft2 I FRAC i ft3 Cl Cl e '9' g 'I g' i-~g~~P'~g-F g/ft2 ~t-g/ft2' 4-- d 5 6.1 6.6 IU4/t U.UYUYl. Y>d. 3.(L-Uj. 6.JL-U3 1.6L+UJ 1.dL+U3 i g 1' 2] 9' O.0' O.0-10472: 0.09091l 952' 1.6E-03; 1.6E-03i 4.6E+02-4.6E+02 1 i ~ ' - ~ 1' 2! 10: 0.0j 0.0 10472; 0.09091! 952 1.6E-03i 1.6E-03 4.6E+02 4.6E+02 1.7E+04' ~ 2.7E+04' ' 1.3E+03 ~ 2.1E+03"1' 4E+00! ~ 2.2E+00 1 3! 0.0 0.0' 10472I 0.090911 952 1.6E-03' 1.6E-03 5.4E+02' 5.4E+02"~ '- ~ ~-~C ' ~ ' '~ ' ~ ~ ~ ~ ~ 1 3[ 4}! 5 3.5j 0.0! 10472' O.09091' 952' 3.2E-C3 ' 1~.6E-03 1;1E+03 5.4E+02' - ' ~ ' ' ~ ~ - - '~ ~ ~ - ~ ^--~ { ~- 1 31 6! ' O.0j' 0.0! 10472'~0.09091 ~" "952 1;6E-03, 1.6E-03 ~5.4E+02' 5.4E+02 ~ ~ -' -- ~ ~' ~ -~~ 1 ^ 3[ ' 8l ' 0.0[' O.0l 10472' O.09091 952 1.6E-03" 1.6E-03 ' 5:4E+02 ~5.4E+02 ~ ~ ~~~ ~ - - - - - - - ~ ~ ~ ~ ~ - - - ~ 7 1 ~ 3; 0.0-O.0! '10472 0.09091 ' ~ ~ 952 1.6E-03 ~1;6E-03{5.4E+02 5.4E+02 ~ ~ ~ ~ ~- ~ ~ ~ - ~~~ ~ ~ ~ ' - - ~ 1 3t 9f 0.0I 0.0! 10472~ 0.09091 ~ 952j 1.6E-03 1.6E-03 5.4E+02 ~5.4E+02~ ~ ~ ~~~ ~ - - - ^ - ~ --- ~ - ~ - ~ - - - ~ - ~ I 1;6E-03 1.6E-03f5'4E+02 ~5:4E+02" - ~ ~ ~ ~ ~ ~ ~ ~ ~~--' --~ 7 ti 3 10! 0.0! 0.0l 10472 ' 0.09091 ~ 952[' 8.2E-03 ' 1.6E-03 E 2.8E+03' it ~ 3 _ _ -.11i. 8.99~~ 0.0F 10472i 0.09091 ' - ~ ~ 952 5.4E+027 7.1E+03: '4.3E+03 4.6E+02 '~~2.BE+02 ~~~4.8E-01{- 3;DE-01 7 4 ~~0.0t 0.0j 10472[ ~~ 0.09091 ' - ~ 952 ' 1.6E-03 4.4E-03[4.5E+02 ~ 4.5E+02f ~ ~ -- ~ ' ~ ~ ~ ~ - - ~~ ~ - ' - ' ' ~ ' ~ ~-- 1.6E-03 ~ 1 ' ~ 4'~- 5g 0.0l' 4.8! 10472: 0.09091 ' ~ 952 1.6E-03 4.5E+02 1:2E+03 E 1 ~~ 4' 6J 0.0 E ' 12.5 " 10472I O.09091 ' ~- 952" 1:6E-03 1;2E-02 ' 4.5E+02 ~ ~3. 2 E+03 '-~ ~- ~ ~ ~ ~ - ~ ~ ~ I ~ ~ ~ - ~ f 1 4 ~ B{j 4.3j 0.0 10472 0.09091 ~ 952 4;0E-03 1.6E-03 ' 1:1E+03 ~~4.5E+02 ~ ' ' - ~~-' - ~ ~ ~ - ~ ' ~ ~ ~ - 1 ~ 4-7~ 0.0; 0.0l 10472 0.09091 -- ~ 952[ 1;6E-03 ' 1.6E-03 4.5E+02 '~4.5E+02' ~ -- --~~' ~ ~ - - 1 4 ~ 9l 0.0! 5.2[ 10472, ~ 0.09091 ~ ~ ~952 '1.6E-03' 4.8E-03 4;5E+02 - 1.3E+03 ~ ~ -~ -~~~-{~~~--~- - ~ - - ~ - ~- ~~ ~ 1.6E-03'1.6E-03'4.5E+02{(4.5E+02 -~~- ~ ' ' ~ ~ - ~ - ~ ~ - - - ~ 1 4 10, 0.0i 0.0: 10472i 0.09091 ~ 952 0.0f10472 f 11 0.0t ~-- ~ ~ 4{ ' ~1.6E-03: 1.6E-03 1 4 0.09091 ' ~ 952 ~ 4.5E+02 4;5E+02'~ ~8.1E+03'~3.3E+02'~ 6.3E+02 ~3.5E-01 6~.6E-01 3.9E+02 ~3.9E+02' 4.3E+03 ' O.0 0.0 10472 0.09091 ~ ~ ~ ~ 952~1;6E-03" 1.6E-03 1 5 0.0! ' ~ ~ 0.0[. 0.0-10472 ~~0.09091 ~ ' - 952 1.6E-03 1.6E-03' 3.9E+02 ~ ~ 3.9E+02' ~~ ~ ~ ~- ~ ~ ~ ~ ~ ~ - ~ ~ -- 1 5 5 0.0I ~10472 0.09091 ~952 1;6E-03 1 6E-03 3.9E+02 3.9E+02'- - ~ ~ ' - ' ~ --~ ~ ~ ~ - - - - - - 1 ~ 5 '6 21.9{4 ~ 8.2 7.9l 10472 0.09091 ' 952 ~ 7.5E-03 7.2E-03 1.8E+03 ~1.8E+03'- ~~ ~ ~ ~ - ~ ~ ~ ~ - ~ ~ - - ~ ' ~ ~ ' - - ' ~ - ~ ~ ~ ~ ~ - 1 - 5 7 25.2j 104721' O.09091 952' 2.0E-02 2.3E-02 ~ 4.9E+03 '5.6E+03 ~ ' ~ ~ - - - - ~ - - ~ ~ ~ ~ - - - - ~ - -~ - 1 Sj Bl 1 Sj 10{, - ~ 3.7; ~~ 0.0: 10472F 0.09091 952'3.4E-03 1.6E-03 ' 8.3E+02 ~ 3.9E+02[1 ~3;9E+02 ~~~ -~ ~ - - ~ ~ ~ ~~ '-- ~ ~ ~~~- 9 0.0f-'10472 0.09091' ~ 952' 1;6E-03 ~1:6E;03 ~3.9E+02 1' Si 0.0; ~~~ '-~~~ 952 T.6E-03' 1~6E-03 E 4.6E+02 9.1E+03~ 9.3E+03~~8:2E+02^ 8:4E402 - 8.6E-01'~ 8.8E-01 p_. 0.0"!-~ 0.0F 10472 ~ 0.09091 ~4;6E+02"h~-~ - ' ~ ~ ~ ' ~~ 5{ - 0.0 0.0' 10472 ~ 0.09091 -~~~ 952 1.6E-03~i;6E-03~ 4;6E402' 4;6E+02 ~ -{ 9 g_ ~ C_ g -6.5f 0.0~ 10472[ ~ 0.09091 ' -'--' 952 6.0E-03"~1.6E-03' 1~7E+03{~ 4.6E+02" -' --- 7[ - -~ 23.1 {- ' ~ 5.0 10472} 0.09091 952 '2.1E-02^ 4.6E-03 6.1E+03 1.3E+03 ~ - ~ ~ ' - - ~ ~ ~ ~~ ~-- 1 6' 8 41.9 64.2 10472, 0.09091 ~ " 952 3.9E-02 ~5.9E-02' 1.1E+04 1.7E+04' ~~~ - ~ ~' ~- - ' - ~ g 1 6' 9i 11.4 44.5 10472 0.09091 952 1.1E-02 4.1E-02 3.0E+03 1.2E+04 ~ - ~ ~ ~ ~- ~ - - ~ ~ "-- - '~ ~ ' - - - - ~ ~ -----~ 0.09091[1~-~952 10{ 13.4'~ 0.0' 10472 ' 1~2E-02~ 1;6E-03 ' 3.5E+03 4.6E+02~ 2.6E+04 ' 3.2E+04j 2.0E+03~ ~ 2.4E+03' 2.1E+00 ' 2.5E+00 1 6 b.6E+02~ ~~ ~~ ~ 0.0' ~~~ ~ 11.9 P '2.0E-03 ~1;4E-02 1:4E+02 2' 1 4i 16.6 ~ ~~ ~ 51.2f' 7802 ~ 0.14286 ---~ 1115 9 7802. ~ 0.14286h -' ~ 1115 1.9E-02 ~ 5.9E-02 ~1.3E+03 ~ 4.1E+03^ ' ~ ~ ' ~ ~ ~ ~ - - ~ ~ 2i - '- li - 5I 2l 1 6' 31.8 3.8 7802i 0.14286F ' 1115 3.7E-02 4.4E-03 2.6E+03 3.1E+02 ~ ~ 2; 1 7f 0.0 15.41 7802i 0.14286h 1115 2.0E-03 1.8E-02 1.4E+021.2E+03 ~ ~ -- -~ 1 7802' O.14286' - 1115 ' 1.5E-02 ' 2.0E-03~ 1.0E+03 ' 1.4E+02 2' 1 8! 12.5F 0.0!--0.0O.0l 2! 1 ~ 9? ~ 1115[2.0E-03I 2.0E-03 1.4E+02 '1.4E+02f~~~ +'- ~ ~ - - - ~ ~ ~ ~ ~ - - - " - - ' ~ - - 7802 ~ 0.14286 ~ ~1115 h 0.0I 0.0< 7802 0.1'286' 2l 1 10 2.0E-03I 2.0E-03! 1.4E+02 1.4E+02t 7~ ~ -~- ~- ~ ~ - ~ - - - - ~ ~ 2! 1 lif' 14.7[; 3.9j 7802i' O.14236t~~~ 1115 4.3 5.0E-03 4.5E-03 3.5E+02 ~3.2E+02l '~ 2.0E+03{E2.3E+03~' --~ --- ~ 2! li 12 7.6i 7802i 0.14286t ~~~1115 ~ 1.7E-02{! ' 8.8E-03 ~ ' 1.2E+03 ~6.1E+02 7.0E+03 'B.0E+03' 1.8E+00 2.1E+00 2{ 2i~ 4!-~ 0.0" -' 0.0" 7802;~0.14286" { 7802I 0.14286t ' --~ 1115 'T.9E-03{ '1.9E-03[~ 3:0E+02i 3.0E+02 2 2!' 5 8.3! 0.0; 27.1(( 14.2{ 7802! 0.14286! 1115 9.8E-03! 1.5E-02 1.6E+03{ 3.0E+021 ~ ~ - - ~ ~ - - - 1115 ' 8.9E-03, t.9E-03 1.4E+03 2f 2; 6! 9.2 2.4E+03' 18.3 7802[~0.14286{ 1115 ~2.9E-02 ~2.0E-02 '4.6E+03 3.1E+03' ~ ~ ~ ~~ ~ -- '-~ 2j 2i 8[ 7 2i 2' 24.6' 7802 0.14286< 1115' 6.4E-03 2.6E-02' 1.0E+03 4.2E+03 ~~ - - - - ~ ' 6.01 4.7 20.8' 7802! 0.14286! 1115 5.0E-03! 2.2E-02' 8.0E+02{ 3.5E+03 / ~ ~-- ~' 2! 2l 9! 10.0[ ~ ~ 12.9: 7802' O.142861 ~ ~1115' 1.1E-02 1.4E-02, 1.7E+03; 2.2E+03'~ 2! 2' 10 2i 2' 111 0.0' 20.5: 7802' O.14286' 1115 ~1.9E-03' 2.2E-02 3.0E+02l 3.5E+03' ~ ~ ^ - ~ 2: 2; 12l 21.3l 0.0l 7802! 0.14286F 1115 2.3E-02 1.9E-03 3.6E+03i 3.0E+02' 2 2: 13' 10.0: 0.0' 7802' O.14286! 1115 1.1E-02 1.9E-03: 1.7E+03! 3.0E+02; 1.7E+04 2.0E+04 2.4E+03 2.8E+03 2.1E+00 2.5 E+ 00 2: 3' 45 0.0' O.0; 78021 0.142861 1115' 1.9E-03; 1.9E-03I ~ 3.1E+02I 3.1E+02l I f 9 Page 3 of 15 2/3/97

O g C) \\ / z" IW5P DATA AND CALCULAllON OF AGIIVITY BY REA54.RLRLNI LLLRtNL TRENCH' TWSP DEPTH 993 u-23 995 U-23 TR AREA TWSP VOL' 1993 U 1995 U 1993 U 1995 U' '1993 U~ 1995 U '93'U-235~ 95 U-23593'U-235 '95'U-235 AREA ~ LBY TWSP ~ IBY' TVSP 'I ~Y'TWSP~ 0 - }E-g --~ i-~Y~ TWSPRB ~ B BY TWSP B ft pCl/g li pCi/g l ft2 FRAC ft3 4, ' Ci ~ C I ' - '-' g " ~ ~~ g -I ~' ' s ~T' 9'~ g/ft2 T g/ft2 - g, 3, y u.u u.o (sue

u. weso im i.vt-us i.vE-usi s.it+vei 3.it+ue; 2'

3! 6' 13.5! 5.3~ 7802i~ 0.14286' 1115i 1.5E-02 5.7E-03' ' 2.4E+03'! '9.2E+02-' ~ ~ '~~ ~ ~ ~ - ~-~ ~ 2 ~ ~' 7l ~10.0! 14.87 7802' O.14286t' 1115j1.1E-02 1;6E-02 1.7E+03 2.6E+03 - 2f 3"!-- 8' ~ 17.7 13.01 7802" 0.14286! - ~ 1115 1.9E-02 1 4E-02 ~ 3.1E+03' ~ 2.3E+03 '--~~ - - ~ ~ - ~-'- ' ~ - - - ~- 3 2: - 9b ~ 27.1 12.5! 7802 0.14286 1115'~2.9E-02 ~1.3E-02 ~ 4.7E+03 ~ 2.~2E+03

~'~~~

~ ~ ~ ~ - - - ' ~ ~ ~ ~ ~ '- ~ 160.0{ ' 7802 0.14286{ ~ ~~ 1115 ~ -~ b ~ 3tE ~~~ 10' ~ 275.0 ' 3.0E-01 '1.7E-01 4'8E+04 '2.8E+04 ~ ~ ~ ~ - - - ~ ~ ~~ ~ -'~ 2" 3" ~11 ~' 10.7 '18.6 7802 0.14286 1115 1.2E-02 2.0E-02 ~1.9E+03 3.2E+03 ~- ~ '{~ ~- 2 3 12 15.5 10.8! 7802i 0.14286 1115 1.7E-02 1.2E-02 '2.7E+03 " 1.9E+03 2 '3' ~ 13"' ~23.7 ~' ~ 33.7; 7802j'O.14286 1115 '2.5E-02 ' 3.6E;02~ 4.1E+03 '5.9E+03 --~ ~ ~ ~ - ~ ~ ~-- - " ~ ~ d ---- ~~2 3~ ~ 14' '38.7~~ 0.0I 7802 0.14286' 1115'~4.2E-02 '1.9E-03 "6.7E+03'~3.1E+02 ~~7.6E+04 ' 4.8E+04 1.0E+04 6.4E+03 ' 9.2E+00 ^ 3.BE+00 12.4{ 0.0 7802 0.14286 1115 2.0E-03 2.0E-03 1.0E+03 1.0E+03 4 - ~~' ~ ~ ~ ~ - ~ - ~ ~ 2 4 4 0.0 ~ 9;7E+03{~~~ ~ ~ ~ ' ~ ' - - - - '- ~ - - '-' ~~' ~ 7.1 E+03 --- ~ 7802 0.14286' ~1115 '~4.5E-03 1.4E-02 2;2E+03 2i 4 'S 3.9 F - g __2 _' 4 ' _'_'-~ 6 l ~ 41.2 ~~~ ~ ~ 16.9; ~'~ 7802[ 0 14286' 7802 ~ 0.14286- ~1115 ~4.8E-02 2.0E:02 2.4E+04 ~ - " - - - ~ ~ ~ ~~--- - - - ~ - ~~ ~~ j '~-~ 1115 ~1 3E;02 4;7E-02 ~6.5E+03 ~2.3E+04b - ~- - - ~ - ~ ~ - ~ - - " g . ~ 11.4 40.9 ._.7-..-' _ _ _ 8 ~ ~51:6 ~ ~ 27.7 7802' 0;14286 ~'~~1115 6:0E-02 ~3:2E 02 3.0E+04I' 1;6E+04 - - - - ~ - ~ ~ ~~ ~ ~ - - - - - g __ z 9L 38;8 20.3 7802' O.14286'-- 1115 ~4.5E-02 ~2.4E;02 2.2E404 " 1:2E+04 - ~ ~ - - - ~~- ~~ W 10 24.9~- 23.97 7802' O.14286' - ~ 1115 ~2.9E;02 2.8E-02 ~ 1;4E+04 ~1~4E+04 ~ .. ~ ~~ ~ ~ 0.0 12.7{~~ 7802[ 0.14286' ~ ~ 1115 2.0E-03 ~ 1.5E-02 1;0E+03 73E+03 - - ~ ~ - ~ ~ - - - --- 6.0f 7802[~ 0:14286~ 2.0E-03[7.0E-03 ~1:0E+03 -- ~~1115 1:1E;02~~1;0E+03 ^ 5;3E+03 ^ - - ~ ~ ~ - - " ~ - ~- - ' -__.g _ _. 0.0- 9.2 _. h _ __. 4 _ _.14.' - 0.0 7802 0.14286 1115 2.0E-03 ~3.4E+03 ~ - ~ 13 -' ~ 0 ; 0 '~~~~ ~ 0.Op ~7802 0.14286 -~ ~ 1115 ~ 2.0E 03 ~ 2:0E;03l~~1;0E+03 - 1:0E+03[1.DE+05 --1;0E+05742E+03-4!1E+03~ 3.8E+00~- 3.7E+00 4 ~ 0.0- ~--

0. 0 ;

794~ 0.50000 C--'~~'397 ~1:4E-03 1:4E-03 ~2:0E+03 ~~ 2.0E+03 ~ ~ ~5 0.0j- ' 0.0L -' 794 0.50000 397^1 4E-03 1:4E;D3 2:0E+03 2.0E403 ~' O.0 - ' O.0{; ~~ 794 ' 'O.50000 ~~~^397~1 4E-03 1;4E;03" 2.DE+03'~2:0E+03 3 ~'1 ' ~ " '6 ~ - 0.0C O.0 794' O.50000 ~ ~~ 397'1.4E-03' 1;4E;03~2;0E+03' 2.0E+03 ~~ 3 '1 7 3' 1 8 ' O.0'~~ '~0.D 794 ~ 0;50000~ ~ 397 397{ 1:4E;03 ~1:4E;03 2;0E+03{2:0E+03 --~ ' 1.4E-03 1:4E-03~~2.0E+03 i 2.0E+03 ~1;2E404-~f.2E+04' ~-' 8.8E+01 -~ 8.8E+01"-'12E;01 '-~2:2E;01 1 ~ ~ ~~ 9 -~' ~ 0.0-- 0.0L~~ ~ 794 0.50000 3;~'- 2'~- ~4 --~ 0.0 0.0 794 0.50000 397 1.4E-03 1:4E;U3 2.DE+03' 2~0E403 3 .~ 3h ~ ~ 2' ~ --- ' 5 -- --- ' O. 0 - 'O.0 ' 794 ~'O.50000 --~~~397 0.0f ~ ~ 794I ' 0.50000{~~ 397 ' 1:4E-03{1:4E-03{ 2.0E403 T.4E;03 1:4E;03' 2.0E403~2:0E+03 T2 7 0.0 794'- ~ 2.0E+03[ ~ ~ ~ ' ' ~ -~ O.0j O.50000iH-- 397 '1:4E-03 1:4E;03 2.0E+03 2:0E+03 3 2i 7[J- ~ 0.0 3.... _ 2Ig _ _.p _. _.0.0 - - 0;0 794 0.50000 ~~~397' 1:4E;03 1;4E-03 2.0E+03 2.0E+03 b~ ~- 397 1:4E;03 1;4E;03 2.0E+03~2.0E+03 3 8 0.0 '~0.0E~- 794 0;50000 -- 3 _ 2! 10f 0.0 0:0 7 94 0.50000 -- 397 ~1:4E;03 1!4E;03 2.0E+03 7.0E403"1:4E+04" 1.4E+04 1;DE402-1.0E+02 -~2.6E- 01 2 6E;01 i ._. p _.0.0~ - 0.0~ ~ 2183f 0~.50000- '1092 ~2.9E-03 ~2.9E-03f 3.1E+03 3~1E+03 - - ~ ~ ~ ~--~ 46 1 5 ~ 0.0 0.0 2183 0.50000 ~--'1092 ~2.9E-03[I2.9E;03{c3:1E+03 ~2.9E-03 ~2.9E-03 3.1E+03 3.1E+03 '~ ~ ~ - ~ ~ ~' ~~ ' - ~ ~ ' _.4 0.0 0.0' -~ 2183 0.50000^--- 1092 ~ 3.1E+03' -7 ~ 0.0 0.0 E 2183 0.50000 --~~ 1092" ~ 2.9E-03f'2.9E-03 3.1E+03 '3.1E+03' - - - ~ ~ - - -~ ~ ~ ~ - - - 4j 1l ~ ~ ~ 8l ~ ~ ~ 0.0 0.0{ 2183 0.50000 - ~ 1092 41 1 ._10 O.0I ~ 0.0 ~ 2183j 'O.50000. ~- 1092~2.9E-03{2.9E;03 2.9E-03 2.9E;03 ~3.1E+03 ~3.1E+03- ~ ~ ~ ~ '-"- - ~ 0.0l - ~ 3~1E+03 ~ 3.1E+03~ - ~ ~ ~ ~ ~~ ~ ~ - - -- - - - ' 4! I' 9 ~ 0.0! 2183i 0.50000! ' ~~~ 1092 ~2.9E-03 2.9E-03 3.1E+03 3.1E+03b g _ g g.~ ~ 0.0t-~~ ~ 0.0I-2183i ~0.50000! 1092' 2.9E;03~2:9E;03-3;1E+03 3.1E+03 g _ 7 0.0H - ~ 0.0! -' 2183I 0.50000I-1092~2.9E-03 2.9E;03' 3:1E+03 3:1E+03 ' - ~ ~ - ~ - "'- ~~--~ 4 1 ~ 13 0.0' O.0' 2183i 0.50000h 1092 ~2.9E-03 2.9E;03 3.1E+03 ~ 3.1E+03 ' ~ - - ~' -~~ --~ ~ 4} 1 14j 0.0 0.0! 2183l ' O.50000'! ' 1092 "1.9E+02['1.9E+02 ' 2.9E-03 2.9E-03 '3;1E+03 3.1E+03 3.4E+04 3.4E+04 4.4E+02 ~4.4E+02 '4.1E-01 4~.1 E-01 4j 2! 4l 0.0' O.0; 2183! 0.50000 ~ ~~- 1092 1.9E-03 1.9E-03 ~-~ 4 2! 5' O.0, 0.0! 21831 0.50000! 1092 1.9E-03 ~ 1' 9E-03' 1.9E+02 '1.9E+02 ~- 4 2i 6! 0.0} 0.0 2183' O.50000' 1092 1.9E-03' 1.9E-03' 1.9E+02 1.9E+02 ~-- 4 2! 7l 0.0i 0.0: 2183' O.50000 1092! 1.9E-03' 1.9E-03 1.9E+02 1.9E+02 4 2! 8" 0.0! 0.0l 2183! 0.50000!' 1092[ 1.9E-03 ' 1.9E-03i ' 1.95+02~ 1.9E+02 4 2' 9' O.0i 0.0 2183' O.50000i~ 1092 1.9E-03' ' 1.9E-03r 1.9E+02 1.9E+02 4l 2' 10' O.0' 4.8' 2183: 0.50000l 1092 1.9E-03 5.2E-03! 5.1E+02 i 4.1E-02l 1.9E+02 4! 2l 11! 12.4f 39.0 2183! 0.50000l 1092_ 1.3E-02 1.3E+03 4.1E+03 Page 4 of 15 2/3/97

e e O C' TW5P DATA AND LALEULATION OF ACTIVIIT BT REASURtRtal ELEMENI ^l 'l ' i i j 993 U-235995 U-235ta AREA l TWSP l VOL 1993 U' ~1995 U 1993 U 1995 U~ '1993 a '1995 U ' 93 U-235" 95 U-235' 93'U-235 ^95 U-235 TRENCH TWSP DEPTH ~l AREA * - ~ ~ 'BY TWSP .8Y TWSP BY TWSP-~k Y TWSP ~ :BY~TWSP' BY TWSP"~ - i-g/ft2~~T g/ft2~ ~ B ft~ pCI/g ' i ~ pCi/g ft2 ~ FRAC ~ ~~ft3 ~t ~Ci } Ci ~ ~~ g -- ~ g ~-b~ g~~P ~g~- I g ~~g 4 4 id J).y s e.4 2153 u.>uvuo ivyg, s.vt-ug, s.4t-ud J.st+us; 3.4 t + ui 4 ~ 2 14f,' 39.8!O.0! - ~0.0' 2183j-~0.50000! 1092' 1.9E-03li 1.9E-03 ~ 1.9E+02l-1.9E+02l - - - - ' ' - ~ ~ ~ ~ - - ~ ~ -~ - - - - ' ~ ~ ~ 13' 11.7 2183l 0.50000' 1092: 4.3E-02 1.3E-02 4.2E+03! 1.2E+03 ~ '~ 4 2 0.0! 4 2 15 7.6! 2183; 0.50000l '1092 1.9E-03 ' 8.3E-03 1.9E+02 8.1 E+ 02 ------ ~4 2 16i ~ ~ 0.0b 36.9I ~ 2183" 0.50000f ~ 1;9E-03 ~4.0E-02 1;9E+02 3;9E+03 1-~1E+04 ~~1.3E+04 2.4E+03' ~~3~3E+03 " 2.2E+00 3.0E+00 ~~ 5" -- 1 -- 4 " ~- ~ 0. 0 0.07 ~ 3275bO.20000b 1092 655 1.1E-03~1:1E;03 ~2.9E+02 ~2.9E402 ~ ,.5' 1 5~~ 0.0 - 0.0I~' 3275 0.20000 " 655 ~1;1E-03~1:1E;03 ~2.9E+02 2.9E+02 - - ~ - - -- ~j ~ 5 ~-'~1 ~ -~ ~ 6 - ~ 0.0 E -' O.0! '- ~ 3275 ' 0.20000'- ~ 655 1.1E-03 ' 1.1E-03 2;9E+02 2.9E+02 L 5 "1 ~ ~ ~ ~ ~ 7{ 0.0{p-~~0.0'0.0f 3275 F 0.20000' ' ~~ ~~ 655 1.1E-03' ~1:1E;03 2.9E+02" 2;9E+02 - - ~ ~~ -~ l '-~'-~~j -~ - 3275F 0.20000 655 1:1E-03 ~1;1E-03 ~2.9E+02 ~2.9E+02~~~ - - ' ' ~ ~ - ~ - ' 5 1 ~ 8 0.0 10[4 'O.0E ~' 17.2r 3275!' O.20000J 655 1:1E-03~ 1.1E-02^ 2.9E+02 " 2.9E+03 - - - - ~ - ~~~ ~ ~ ' ~ ~ ~ ~ ~ ~ ~ - ~ ~ ' ~ ~ ~ ~ ' ~ 5 ~~ 1' 9 I 0.0!' 51.0! 3275l 0.20000 655 '1.1E-03 '3.3E-02' 2.9E+02 "8.5E+03 ~ ~~ ~ ~ ~ - ~ ~ ~ ~ - - ~ ~ - 5 1 64.2[ 23.2 ' ~ 3275 0.200000.20000f 655 1;6E-02 2.8E-02 4.1E+03 " 7.3E+03 ~' - - - ~ ~ - ~ ~ ~ ^ ~ ~ ~ ~ ~ ~ ~ ~ 5, 1 11l 24.5 43.7 3275 _.5i-1 ~~~ ' 13 F - ~80.5 '-~ ~ 28.9J 3275 ~ 0.20000 -~ 655 '5:1E;02 1.8E-02 1.3E+04 ~4.8E403 3.0E+04' 2.9E+04 ~-'2.5E+03 2:4E+03~ 3.8E+00j ~~ ~3.6E+00 1 12i- ~-~ 655 ^4;1E-02 1.5E-02 1;1E+04 3.9E+03 ~ ' - - 5' 0.0F 3275 I 0.200003275' ~ 0.20000h - ~ 655 5 -2' ' ' ~ ~ 41 ' ' O.0 1;2E-03' 1;2E-03 7.1E+02 ~7.1E+02 ~ ~'~~~ ~ - - - - ~ ~ ~ ~ - - - - - ~ - - ~ '-~ ~~ ~5 -'2 ~ St ' O.0 ~~~ ' O.0: 655 ' 1;2E-03 1.2E-03 ' 7.1E+02 7.1E+02 ~~ ~ ~ -- - -~^ - ~ ~ ~~ ~ - - 5 2 6! 0.0 - ~8.6I '3275 O.20000 '~ 655 1.2E-03' 6'0E-03 ' ~ ~ 655[~1:2E-03 ~ 1.2E-03{ 7.1E+02 ~ 3.5E+03 - ~~~~ ~ ~ ~ ~ ~ - ~ ~ ~ ~ - ~~ ~ ~ ~ ~ ~ ~ - ~ ~ ~ ~ - ~ 5' 2 '7j 0.0 4 0.0[~ 3275 'O.20000 2 ' ~ ~ 8l ~~ 0.0; ' - 0.0 ~3275 ~ 0.20000 -'~ '655 ' 1.2E;03 '-'1.2E-03 ~7.1E+02{~7.1E+02' ~ ~ ~-~ ~

~-'

~ ~ - - 4 1E+02 7.1E402 7 5 - - ~ - ^ ~ ~ - ~ - - - - - - - ~ ~~ - - - -- ~~' ~ ~ - - - 2 9 0.0 0.0! 3275 0.20000' ~655 ~1.2E-03 ~1.2E-03 7.1E+02 ~7.1E+02' ' ' ~ ~ ' ~ ~ ~ 5 Si 2 10' O.0b 0.0! 3275 0.20000 -- 655 1;2E-03 1.2E-03 ' 7.1E+02 ~7.1E+02 5' ~ 2 -~ - ~ 11 ~~0.0"~ ~ 0.0! ~3275'~0.20000'~ 655 1;2E-03 1.2E;03 - 7.1E+02 7.1E402 ~5.7E+03 ~ 8.5E+03 1;9E+02 2.9E+02 ~~3.0E-01 T.4E-01 5 ~3 4' O.0 ~ ' " 0.0h'3275: 0.20000~ ~' 655 ~1;6E-03 1.6E-03 ' 1:3E+03 '1;3E+03 ' - ~ ~ - ~ ' - - ~ ~ ~ - ~~ ~ - ~ - - 5 3' ~ 5 0.0 - ~ 0.0 3275 " 0.20000 ~ -~ 655 '1;6E-03 ~1;6E-03 ~1.3E+03 T.3E+03 - - - ~ ~ ~ '~ ~ ~ - - - - - ~ -- 0.0h ' ~ 0.0h 3275f 0.20000' ~ 655 1;6E-03 1.6E-03 1.3E+03 ~1.3E+03 ~- - ~ ~ ~ ~ ~ - ' 5 3 6L 5 ~ ~ ' 3 E - - 7{ ~~-~ 0.0b 0.0~ ~ 3275 ~ 0.20000 655 1.6E-03 1:6E;03 1.3E+03 ^1:3E+037 -~ ~ ~ ~ ~ ~ ~ ' - ~ ~ - 5' 3! ~8 0.0! 7.8 3275 0.20000b ~655 1;6E-03 ~6.9E-03 ~1.3E+03 ~ 6.0E+03 I 3! 9f 7.0 ~~50.6I~~3275 0.20000f'655 ~ 6.2E-03 ^ 4.5E-02 ~5:4E+03 3.9E+04h ~ ~~ ~ ~ ~ ~ ~~' I S h ~~ 5! ~ ~ 3i ~ ~ 10! S 33 7 ~ 20.5i ~ 3275 ' 0.20000' ~- ~655 3.0E-02 1;8E-02 ~ 2. 5E+04" ~' 1.6E +04 ' -- -~~ ~ - ~ ' ~ ~ - ~ ~ ~ ~ - ~ - 3!~ 11[~~~10.5' ~~~ ~0.0!~ 3275 0.20000f - 655 9;3E-03 '1.6E-03 t 8.1E+03 1.3E+03- ' ~ ' - - - ~ ~ ~ - - ~ ~ - ~ ' ~ - - - - 5 ~ ' 3i - 127 0.0 L -'- ~ 0.0' 3275 0.20000H ~655 1.6E-03F T.6E-03 1;3E+03 1:3E+03 ~ - - ~ ~ ~~-~ b- - ---~~ ~-' ~ ~ 0.0I ~ ' 3275 ~ 0.20000 655 1.6E-03" 1.6E-03 ~ 1;3E+03 1;3E+03 4.9E+04' 7.0E+04 - 8.8E+02 1 3E+03"~ 1.'3E+00 1.9E+00 ~5 3: 13! ~ 0.0[7~ 0.0F 6, 1 ~ ~ 47 ~ 0.0 4938! O.25000 -~ 1235 '2.2E;03' 2.2E-03 ~1.9E+02 1.9E+02 -~~~'-' ~ ~ ~ ~ - - ~~ ~ 6i 1 5! 0.0F 0.0b 4938! 0.25000 0.25000f~~1235 2.2E-03 2.2E-03 1;9E+02 " 1.9E+02 ~ ~ ~ ~ - 6i 1 6! 0.0' O.0! 1235 2.2E-03 2.2E-03 1.9E+02' 1.9E+02 b 61 1 77 0.0 153.2 6i 1 8' 345.3 37.1" w3o'f 0.25000b O.25000 1235 2.2E-03 1.9E-01 1.9E+02 1.7E+04' ~ - ~ ~ - ' ~ ~ - -~ ~ ~ -~ 4938 1235 ~4.3E-01 ~4;6E-02 '~3.7E+04 4.0E+03 ~~'~-~~ - ' ' ~ - ~~' - ~ ~ - ' ' ~ ~ 10l 9 31.1 181.7i 4938[ 0.25000I 1235 3.9E-02 ~ 2.3E-01 3.3E+03'~ 2.0E+04" ~~ '~ ~ ~ ~ ~ 6' 1 ~15.4[ 4938; 0.25000! 1235 8.8E-02 1.5E-02 ~7.6E+03 1.3E+03 6' 1 70.3' 12.0 49384 0.25000! 1235 3.2E-02 1.9E;02 2.8E+03 ~1.7E+03~ ~ ' - - ~ ~ 6' 1 11l 25.9 6' 1 12i 11.2 ~44.9f 4938F 0.25000 E-1235' 1.4E;02~~5;6E-02 1.2E+03~ 4.8E+03 6i 1 13i 85.4 0.0! 4938+ 0.25000 f 1235 1~ 1E-01 ~2;2E-03I~ 9.2E+03 1.9E+02f6.2E+04' 4'.9E+04' '1.5E+04 1.2E+04' ~~ 1.'2E+01 '~~9.5E+00 f ~L - C - 0.0l ~~~ ^ 0.0E~ ' 4938F ~ 0.25000E 1235 ' 2.5E-03 2.5E-03 2.0E+03 ~ 2.0E+03 - - - ~ ~ - - - - 1235; 2.5E-03 '~ 2;5E-03 2.0E+03 ~2.0E+03[-"-- ^ ~ ' ~ ~ ~ ^ ~ ' - ' - ~~- - ' ~ - - - 6' ~ 2' ~ ~5 ~ ~ 0.0I-- 0.07 ' 4938l 0.25000i ~~~ ~ ~ ~ ' ~ --- 6f 2f 6l 0.0I 0.0l 4938' O.25000f 1235' 2.5E-03{ ~2.5E-03 ' 2.0E+03 ~ 2.0E+03 - ^ - ~ ~ ' ~ 1235! 2.5E-03 2.5E-03 2.0E+03 ^2.0E+03~ ~ ~ ' ~ -~ ~ ~ ~ ~-- 6; 2! 7; 0.0! 0.0: 4938O.25000j 6' 2: 8: 0.0: 0.0' 4938' O.25000 1235! 2.5E-03 2.5E-03 2.0E+03 2.0E+03 - ~ ~ - - - 6' 2: 9' O.0 0.0; 4938' O.25000! 1235! 2.5E-03 2.5E-03 2.0E+03 ' 2.0E+03, 6! 2 10' O.0* 0.0: 4938' O.25000' 1235! 2.5E-03 2.5E-03 2.0E+03 ' 2.0E+03{! ~ 2.0E+03 ~ 6' 2' 11! 0.0~ 0.0: 4938' O.25000; 1235i 2.5E-03 2.5E-03 ' 2.0E+03 6' 2' 12! 27.7l 0.0' 4938! 0.25000l 1235j 4.0E-02 2.5E-03 3.1E+04 2.0E+03 6! 2: 13t 3.6' O.0' 4938 0.25000! 123515.2E-03 2.5E-03 4.1E+03 2.0E+03 Page 5 of 15 2/3/97

O O O 2" IW5P DATA AND CALCULATION OF ACTIVIH BY REASURLMLNi ELtMLN3 i TRENCH TWSP DEPTH 993 U-235 995 U-235TR AREA

  • TWSP VOL l1993U 1995 U 1993 U

'1995 U ~1993 0 1995 U' 93 U-235195' U-235 93 U-235 '95~U-235 BY TWSP MBY TWSP-f Y' TWSP~ SY TWSP iBY TW$P i i AREA I { BY TWSP ~ B ft' I pCl/g - pCl/g'i ft2 't FRAC ft3 l' 'Cl C1' g g g - d ' o - - } - ~~ g d " 's -T g/f t2 1-' g/f t2 t' i e.ut+us, g i m u.u: we u.z)uvu 1 ext e.>t-us. e.>t-us; e.ut+us 2.0E+03l 5.5E+04! 2.4E+04! ~ 1.3E+03; ~ 5.5E+02' ~ 1.0E+00! ~ 4~.4E0 e! 15! u.u! 6 2 0.0 0.0' 4938' O.25000' 1235 2.5E-03I 2.5E-03 2.0E+03 6' ~ ~ - ' 6! 3: 4! 0.0I 0.0! 4938' O.25000! 1235 3.7E-03[3.7E-03'~4.6E+03 4.6E+03i -~~ ~[' - -~ ~ - - ' - ' ~ ~ - - 0.0' 4938i 0.25000 1235 3.7E-03 3.7E-03 4.6E+03 ' 4.6E+03 - ~ ~ ~ ~ 6' 3! SI 6j - 0.0f O.0l0.0j 4938 0.25000l 1235 3.7E-03l'3.7E-03? 4'.6E+03 4;6E+03 ~ -- " - ~ ~ ~ - - - - ~ ~~~~ ~ 7i _~~~' O.0Q 0.0[ 4938[; _~ 0.25000[ ' 1235 3.7E-03[i 3.7E;03' j4.6E+03 I 6'f ' ~ ~ ~ 3 ~3h ~- 3.7E-03 ~~l4.6E+03']-]~ ] _~f~ _]- ~))i __]~ ~-]- 6 4938, 0.25000 4.62+03 4.6E+03 ~ ~ - - ~ ' ~ ~ ~ ~ ~ ~ ~ ~ - - - ~ ' - - 4938I ' O.25000h' ~ 1235 3.7E-031235 3.7EiO3[ 3.7E-03 4.6E+03 4.6E+03' 8 ~ 'O.0; 0.0 6: - 3t! ' ~~ 0.0{ ~ 0.0 61 3~~~ 9 '~~~~~~ 0.0 ~ 0.0 6b - 3! 10 ~ ~ 0.01-~' 0.0 ' 4938{L' 4938 ~ 'O.25000f ^ 1235 3JE-03, 3.7E-03 ' '4.6E+03~ 4.6E+031- ~ - - ~- ~ ~ ~ - - ' ~-~ ~ ~--- 0.25000F 1235 ' 3;7E-03" 3.7E-03 ~4'.6E+03~ 4.6E+03{- -- - ~ - ~ ~ - - 6i 3' ' 11 6i 3 12 0.0' O.0 4938 0.25000} 1235 3.7E-03 3.7E-03 4.6E+03 4.6E+03 1235 3.7E-03 3.7E-03 '4.6E+03 ~4.6E+03 6! 3 13. 0.0' O.0 4938 0.25000 4 6! 3 14{ 0.0 0.0 4938 0.25000 1235 3.7E-03 3 JE-03 ~4'6E+03' 4.6E+03 ~ 6.8 0.0, 4938 0.25000I 1235 1.4E-02 ~ 3JE-03 1.BE+04 4.6E+03 ~ ~- 6{ 3 15 4 ~ 0.0j 4938 0.25000I 1235 1.4E-02 3.7E-03~1;7E+04 4.6E+03 '~'8.5E+04 5.9E+04 '-" 8.5E+02 ~ 5.9E+02 ' 6.9E-01 4.8E-01 - - ~~ 0.0, ~ 4938 - 0.16667[- ~ 823{'1' 4E-03 6 _. _ 3 ' _ _ _.16 F. ~~ 6.7 ~1:4E-03~~1:3E+02 ' 1.3E+02 ~ ~ - - 7 y 0.0 O.0F 4938 ~ 0.16667 ~ 823 1.4E-03 1:4E;03 1.3E+02~1.3E+02 i -~~5.2f4938f~D.16667{l 7 -~

5. -

0.0 823 ' 1.4E-03 4;3E ~ 1.3E+02 3.8E+02 --~ ._ __ 1 ~ ~6" 0.0 .._. ~ 8 0.0{ 43.7 {i4938j 0.16667i 823' 1;4E-03 9;3E;02 1.3E+02 ~ 8.3E+03 l ___~~7-0.0 - 113.3 1 y ' 4938 ~ 0.16667j 8231;4E-03 3:6E-02 1:3E+02 ~3.2E+03 _g i ~ ". 7l -~1 ~9 ~41.7 -- 11.4 4938p 0;16667l 823 ~3.4E-02 93E-03 ~3:1E403~ 8.4E402 1 _ _ _. H _.~~~ 0. 0 7 -- ' 0. 0' 4938 0;16667[ ~~ 823 ' 1:4E-03{g1:4E-03 ~'1;3E+02 ~1.3E+02 4938F 0.16667 ~ 823~3;1E;02 1;8E;02 ~2.8E+03~ 1.6E+03 7._ . ~ 10 -~ 38.3F~ ~ 22.0 b :4E-03 1:4E-03"1;3E+02 1.3E+02 .. _ 9 3 _ ___. 0. 0 ~~ ~ L~1;3E+02 ~ ~ ~ 0.07 4938 0.16667 ~~~~ ~ 823 1 0.0' ~ ~ 0.0"~ 4938 -'0;16667-~~ 823 ~1:4E-03 ~1:4E;03 ~1:3E+02 ~ 10.3 0.0"- 4938 ~~0.16667 823~8.4E-03~1:4E-03' -~7.5E+02 T3E+02 7.6E+03~ T.5E+04' 1.8E+03 -~3:6E+03 2 2E+00'~ 4.4 E+00 __.2 -- - 'T ~~ ~ 0.01 ' ~ 0.0 -~~ 4938I- 0.16667 -~~~~ 823* 1:4E;03 1 4E-03 ~2;7E402 2JE402 0.16667~~ - 823' 1;4E-03 '1:4E;03 2 7E+02 2;7E402 ~ ~

~

~ 2 -'6 0.0 ' O.0~-~ 4938[E 0.16667 7j 2[ 5 ~ ~ 0.0 0.0 4938 823 1.4E-03~~1:4E;03 2.7E+02~2.7E402-- - ~~ - - ~ - - - ~ ~ - - - ~ ~ - ~ - - " - - 7: . [ --~ - - ~ 0.0 -- ~ 0;0 ~ 49387 0.16667 823^1.4E;03 ~1:4E;03~~ 2 JE+02 2.7E+02 ~ ~ ~ ~ ~ ~- - ~- -' 0.0{-~ 4938I' O.16667 0.0 823 ~1.4E;03 ~1:4E-03 ~2;7E402 2~7E402 - - ~ - -- - - - ~ ~ - - - 7~ '-~ ---~ 81 0.0 _. 7 _ _. 2i -~~ _7 _. - 2 ~ ~ 10T---- 0.0 O.0{4938{:~0.16667; 4938 0.16667 823 1;4E-03~1:4E-03 ~2.7E+02 2.7E+02 ---~-' ~ - - - - ~ ~ 7 9 0.0 823' 1:4E;03 2;7E402 ~2.7E+02

7. ~ 2 11*

5.3 0.0 ~~~ 4938t-' 0;16667 ---- 823 4.2E-03{1:4E-03 1:4E03 8:1E+02~ 2 7E402

7..

_2 ~~~T ~~~ ~ 0.0 0.0'~ ~ 4938I ~ 0.16667 -- -' 823'1.4E-03~1.4E;03 2.7E+02 2.7E+02 i 7 2 - 13 0.0j 0.0'-~ 4938L 0.16667~~ 823 '1.4E-03 ' 1.4E-03 ^2.7E+02 ~ 2JE+02 - ~ ~ ~ ' - ~ - '- ~ - ~ '~~ ~ ~ - - -~~ ~ - ~ ~ 15 0.0[-~ 0.0 4938{f 0.16667 -~- 823{1;4E-03 -- 14~ ~ 0.0 ~0:16667 823 ~1:4E;03' ~2.7E+02 2;7E+02' l ~~ 7 - 2 0.0 - 4938 1.4E;03~1:4E;03 2;7E+02 2.7E+02-3JE+03 3.2E+03'- 4~.3E+02 3.6E+02 5.2E;01 4 4E;01 T 2 0.0 - 4938E 0.16667 ~---~ 823 1.4E-03 ~1:4E-03 ~3;7E402"' 3 7E+02g --~~-- -- '~ - ~ 0.0 - 4938F 0;16667[i _ 7._ _- ~ ~ ~ ~ ~ 0.0 823~1.4E-03 ~1.4E-03 3.7E+02 3.7E+02 ~ - - - - - ' - ~ ~ - - - ~ ~ - ~ ~ - - - - ~ ~-- ~ ~ _.5 ~-~ ~~ 0.0 7F - 3 6 -- ~ 15.5 ~ 14;2 ~4938f~0.16667i 823~~1;2E-02 1;1E-02 ~3:2E+03~ 3;0E+03t 23.4 4938! 0.16667l- ~ ~ ~ 823" 5.3E-03 ~ 1.9E;02 ^ 1.4E+03 4.9E+03 -- - ~}~~ --~- - - ~ - - - ~ - - 7j ~ 3i 8! ~~~0.0i ~ 0.0[- ~ 4938! ~ 0.16667' -~~ ~ 823[1.4E-03 ~ 1.4E-033JE+02'-~3.7E+02[-- ~~~ ~' ~~ - 7! 3 7i 6.7 ~ ' - ~ - 74 31 9I 0.0I-- 0.0: 49387 0.16667i - 823; 1.4E-03 ^ 1.4E-03" 3.7E+02~ 3;7E+02 7l 3j 101 0.0! 0.0l~ 4938I 0.16667i 823{7.6E-03,t 1.4E-03 1.4E-03 3.7E+02' 3.7E+02 9.5f 0.0 4938: 0.16667f 823 1.4E-33 ~2.0E+03 3.7E+02 ~ ~~ ~- 11{ - ' 21.9[ -~16.8{' ~ 7i 3: 12 49387 ~0.16667F - 823 T.7E-02J 1;3E-02'~'4.6E+03^ 3.5E+03 - ' - ~ ~ ~ - ' - - ~ ~ ~ ~ -~ 7i 3l 0.166677 823 't.2E-02 8.4E-03'~3.3E+03"~2.2E+03; ~~ ' - ~ 4938"! 0.16667i 7; 3j 13j 15.6; 10.5 ' 4938 823' 1.4E-03' 7.5E;03 3.7E+02' 2.0E+03, ~ 7; 3: 14; 0.0 9.4 I 0.0 ' ~ ~ 0.0[ 4938' O.16667i 823' 1.4E-03j ~ 1.4E-03 3.7E+02 ~3.7E+02{; ' 3 JE+02 7; 3! 15i - 0.0! 0.0l 4938[ 0.16667; 823 1.4E-03 1.4E-03 '3.7E+02 7 3j 16' j 3.7E+02' 1.8E+04 1.9E+04 1.5E+0! 1.6E+03 1.8E+00 1.9E+00 7 3-17i 0.01 0.0[ 4938: 0.16667j 823' 1.4E-03 '1.4E-03 3.7E+02 9.6E+02f' l i 8' 1! 41 0.0! 0.0 1296! 0.50000! 648, 1.3E-03 '1.3E-03 9.6E+02 Page 6 of 15 2/3/97

2" IW5P DATA AND CALCULAIlON OF ACTIVIIT BT MEA 5LRLMtml E.L LP!t.N I i i 993 U-235 995 U-233TR AREA [. TWSP i VOL

  • 1993 U 1995 U 1993 U 1995 U

~1993 U 1995~U~ '93 U-235" 95 U-'235 93 U-23' TRENCH lTWSP DEPTH B EBY TWSP~ BY TWSP91 +6 'BYTWSP'd'Y'TWSP 1 ~ g ~ ~ r'g/ft2 l g/r.2 ' {~ AREA ,BY TWSP ( j {pCl/g I ~ ! ft2 i FRAC ! ft3. CI Ci g g ~i~ g g g ft 6 pCi/g u.u u.u i<vo u.>uvuu ees 1.st-us 1.at-us v.ot+ue v.ot+u4 i >l 0.0) 0.0' 1296: 0.50000 648' 1.3E-03l 1.3E-03' 9.6E+029.6E+02 ~ 9.6E+02{ ' ' ~ ~ [' ~ s 0 6 9.6E+02 '~' 8' 1! 8: 11 7i 0.0' O.0' 1296! 0.50000; 648' 1.3E-03; 1.3E-03' 81 1! 8: 0.01 0.0' 1296! 0.50000: 648: 1.3E-03i 1.3E-03! 9.6E+02 9.6E+02 ~ ' ~ - ~ ~ ~ ' - ~ ~ -~ ~ ' ~~ - ~ ~ ~~ ~ ~ ~ - ~ ' ~ 8' il 9' O.0: 0.0: 1296! 0.50000l 648: 1.3E-03! 1.3E-03I 9.6E+02 - 9.6E+02 ~~ ~ ' O.50000 648f 1.3E-03 1.3E-03l ' 9.6E+02 9.6E+02 '~ ~- ~' ~ ~ - ~ ~ -~ ~~ - 8' 1! 10 0.0 ' O.0l 1296{f0.50000{ 8: 1 12' 0.0f 648i1;3E-03 9.6E+02 -'~ ~~ - - ~ ' - ~ ~ ~ ~~ ~ ~ ~ ~ 648[ 1.3E-03 _1.3E-03[ 9.6E+02 8' 1{~ ' 11 0.0; 1296; 7 1.3E-03' 9.6t+02 9.6E+02 O.0: 0.0: 1296 0.50000, 4 8{ 1 13 ~0.0' O.0! 1296f0.50000[ ~ 648; 1.3E-03. 1.3E-03; ~ 9.6E+02-9.6E+02;~~- ~ ~ ~ - ~ ~~~ ~ ~ ~ ~ ~ ~ ~ - ~ ' - 8 1 14 0.0f 0.0! 1296P 0.50000 648; 1.3E-03t 1;3E-03t 9.6E+02{T 4E+02[ '-~ - ~ ~ F] 9.6E+02 0.0' O.07 1296 0.50000 ~ ~ 648t 1.3E-03' t 8' 1" ~15 ~ ~ "0.0f 0.0! 1296 0.50000 ~ 648' 1.3E-03 1.3E;03 9.6E+02 ~9.6E+PI ~ ~ 1.3E-03' 9.6E+02r C~ 8' If~ 16, 0.0f ~ 0.0"f 12%1296[~ 0.50000f ~ -~ 648! 1.3E-03648{1.3E-03' 1.3E;03 ' 9.6E+02 9.EE+02-' -~ ~ ~ ~ ~ ~ ~ ~ ' - ~ ~ ~~~ ~- 0.50000" ~ ~~ ' 1.3E;03 9.6E+02 '~ 9.6F +02 ~~~ ~ - ~ - ~ ~ ~ t 8' If ~ 17I 0.0t i~ 18l 0.0 1.4E+04 ' 1.4E+04'~3.6E+02 '3.6E+02 5.5E-01 ~ 5.5E-01 8: 4 0.0i 1296 0.50000 648; 1.3E-03 ^ 1.3E-03' ~ 9.2E+02 ~9.2E+02 8' 2! 4 0.0 j 8: 2' '5 0.0[ ~ 0.01 1296 0.50000 ~ 648j 1.3E;03~1;3E-03' 9.2E+02 ~9.2E+02 ~ - ~ ' ~ ~ ~ - ~ - - ~~ ~ ' - ~ ~ ' ~~~ ~~ ~ ~ ~ ~ - - 1 ~ ~ - - - ~ 8 2 6 0.0 [ ~ 0.DI 1296 0.50000;~-~ ~ 648, '1;3E-03 ~ 1.3E;03 ~9.2E+02 9.iE+02 ~ - -- ' ' ~ ' -'-~ ~ ~ ~~~ ' ~ i{ -~ -- 8: 2 ~ 7; 0.0i 0.0I 12 % ' O.50000; ~ ~ 648i 1.3E-03 ~1;3E-03~ 9.2E+02~ 9.2902 -~ - ~ ^ - - ~ - - --~ - ~ ~ ~ ~ 8~~ 2 ~8F 0.0 f 0.0L 1296' O.50000C ~ 648' 1.3E-03~ 1.3E-03 ~9.2E+02' 9.2E+02 - ~" -~ ~ ~ ~ ' ' ~ ~~-- ~ - - ~ ~ '~~t-~ 10l ~ 0.0[-~ 0.0' ~1296i 0.50000p~ 648 ~ 1.3E-03 1.3E;03 ~9.2E+02 ~ 9.2f.+02 -~~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ -- Bi ' ' ~ 2E 9 0.0 0.0 1296j 0.50000 648 1.3E-03 ' 1.3E-03 9.2E+02 9.EE+02' - ~ - - - - ' ~ ~ ' ' ~ - '" - ~ ' ' - ~ - 8' 2{ 1296! O.50000;~ ~648 1.3E-03 ~1.3E-03 9.2E+02 9.2E+02~ - ' ' - - ~ ~ " ~ " ' ~ ~ - - ~' ~-'- - 8' 2: 11 0.0 0.0 f 8 2! 12 0.0' ' O.0' 12967 0.50000 648 1.3E-03 ~1~3E-03 ~ 9.2E+02 9.2E+02 - - - -- ~ ~ ~~- ~ ~ ~ -~ 0.0 O.0I 1296 ~ 0.50000 -~ 648! 1.3E;03' ' 1.3E-03 9.2E+02 9.2E+02'- ~-~~ '~ ~~ ~ - ~ ~ ~ ~ ~ ~ ~ ~ " - - Si 2! 13-8! 2f 14f - 0.0f 0.0' 1296 0.50000 '- ~ 648j 1.3E-03 '1.3E-03 ~9.2E+02 9.2E+02'- ' ~ - ' - - - -'-~ '-~~t-- ~ ~ - - - O.0 0.0 1296 0.50000! ~ 648! 1~.3E-03'~1;3E-03 9.2E+02 9.2E+02' ~ - ' - ~ ~-~ - ~ ~ ~ ' 8' 2l 15'! 3 0.50000I'~ 1.3E-03 ~1.3E-03 81 2! 16 0.0' ~ 0.0' 12961 ' ~ 9.2E+02 ' 9.2E+02l/ ~ ~ - '~ ~' -~ ~ ~ ' ~ ~~~ ~~ 8 2I 185 0.0'~~ 0.0,~"1296j 0.50000f~ ~ ~~ 648 8' 2l 17! 0.0 ' 9.2E+02 9.2E+02 ~ 648 1.3E;03'~1.3E-03 0.0 1296, 0.50000: 648 ~1.3E-03P 1.3E-03 ' 9.2E+02I ~ 9.2E+02" ' ~ - - ~~- - ~ ~ ~ - ~ - ~ ~ ~ - - ~ ~ ~ 8' 2! 19' O.0 0.0 ' 1296t 0;50000l ' 648 1.3E-03! 1.3E-03' 9.2E+02I 9.2E+02 1.5E+04' 1.5E+04 }3.8E+02' 3.8E+02 ~~5.9E-01 ]5.9E-0_1 0.0{~2694 9l li ~ 5 0.0 0.20000:~~ ~ 539, 9.4E-04i 9.4E-04 3.6E+02l 3.6E+02 '-~ ~ ~~~ ^ ~ ~ ~- --~- ~ ' - O.20000F ~ 539[:~ 9.4E-04 4 0.0 0.0 5.0 ~-- 0.0 [ - 2694 0.20000" 539i~ 2.7E-G3[ ~ 9.4E;04 ' 3.6E+02[3.6E+02{~~~~ ~ ~ ~ - ~ - - ' ~ ~~ 9' li' 9.4E-04 2694 9I IL t 1.0E+03 3.6E+02 p __ _ 6' 0.0 - ~ 0.0 P 2694 'O.20000" - 9.4E-04f 3.6E+02 ' 3.6E+02 ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ - ~ ~ ~ ~ ~ 0.0[ ' '~2694[ 0.20000h ~ ' 539t 9.4E-04 7 9, 539f 9;4E-04 9.4E-04" 3.6E+02, 3.6E+02'- - ~~' - - - - ~~ ~ ~ ~ - - 9I 1' Bi 0.0 ~ i 9; 1 9; 10.7i 0.0] 2694, 0.20000j ~ '-~ 539{ 5.8E-03 9.4E-04 2.2E403 3.6E+02 0.0 2694' O.20000; 9 1 10' 3.9i-539 9.4E-04 8.1E+02 3.6E+02 ' ' - ~ ~~ ~ ~ ~ - ~ - ~ ~ -~~ ~0.0((2694 0.20000I ' 539[ 2.1E-03 9' 1' 11 0.01 ' 9.4E-04 9.4E-04 3.6E+02 '3.6E+02 -'5.9E+03 2.9E+03 ~3.2E+02 1.6E+02~ 6.0E-01 ^3.0E-01 9' 2~ 4 0.0[ 0.0. 2694 0.20000F 539' 9.2E-04 9.2E-04" 2.8E+02 ~ 2.8E+02 '~ ~ ~ ' ~ ~ ~ ' - -'~ ~ --- 9' 2 5 0.0' O.0l 2694j'0.20000! 539 9.2E-04 9.2E-04 2.8E+02 2.8E+02 --~ ~~ ~ '~- ~- ~ ~~ ~ ~ ~ - ~ - - 9' 2 6l 5.6f 0.0, 2694! O.20000! ~539 2.9E-03! 9.2E-04 ' 9.0E+02 ' 2.8E+02 ~ ~ ~ ~ ^' ~ ~-- 9' 2 7i 0.0! 0.0' 2694 ' O.20000i 539l 9.2E;04i 9.2E-04 2.8E+02 ~ 2.8E+02 i 9' 2' 8I 6.1! 0.0l 2694; 0.20000 539; 3.2E-03' 9.2E-04 ' 9.8E+02! 2.8E+02 9 2' 9' 8.2! 0.0: 2694i 0.20000 539] 4.3E-03 9.2E-04! 1.3E+03i 2.8E+02 I 9: 2! 10 0.0! 0.0! 2694f 0.20000 539i 9.2E-04 9.2E-04 2.8E+02( 2.8E+02 9' 2: 11! 0.0' O.0! 2694t 539! 9.2E-04 9.2E-04 2.8E+02, 2.8E+02 2694b'0.20000O.20000I ~ 539 9.2E-04 9.2E-04! 2.8E+02? 2.8E+02 4.9E+03 ~2.5E+03 ~ 3.5E+02 1.8E+02: ~ 6.4E-01 ' 3.3E-01 9' 2l 12 0.0: 0.0l 9: 3: 4! 0.0' O.0[ 2694l'O.20000I ' 539 9.1E-04 ' 9.iE-04! 2.5E+02 2.5E+02 9' 3' Si 0.0i 0.0, 2694! 0.20000 I 539 9.1E-04 9.1E-04f 2.5E+02 2.5E+02I -~' ~ ~ - ~ ' 539l 9.1E-04 9.1E-04' 9.1E-04 2.5E+02 2.5E+02l ~ 9' 3' 6: 0.0; 0.0 2694: 0.20000^ 9' 3' 7i 0.0: 0.0! 2694' O.20000'

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3' 8' O.0! 0.0! 2694! 0.20000; 539' 9.1E-04 9.1E-04 2.5E+02l 2.5E+02l 539! 9.1E-04 9.1E-04l 2.5E+02l 2.5E+02t 9 3i 9: 0.0f 0.0I 2694l 0.20000 ? Page 7 of 15 2/3/97

.. ~. O e 9 2" IW5P DATA AND CALCJLATION OF ACliVliT BY MLA5UREMENI ELEMENI i 993 u-23h995 U-235TN AREA l 1993 u [ 1995 0 { 1993 u ! 1995 U -;BY TWSP ' BY TWSP' '8Y~ TWSP ~ ' Bf fWSP-~ 1993 0 1995 U 93 U-235 95 U-235 93 u-235~~95 U-235 TWSP VOL TRENCH TWSr DEP1H 1 l j i j { - i o r- 'a l-g t' g/ft2 t g/ft2-- i i { AREA .BY TWSP .BY TWSP g i g t ft pct /g i pct /s ft2 FRAC i ft3 ci i ci 4 g V 3 lu U.U, U.U dbW, U.dddud AW Y.ll-U4 Y. i t - U4 d.>L+U4 4.>L+0d; i ' 1.6E+02! 3.0E-01} 3.0E-01 6 9 3: 11! 0.0: 0.0~ 2694: 0.20000' 539' 9.1E-04 9.1E-04! 2.5E+02! 2.5E+02i 2.0E+03: 2.0E+03! 1.6E+02 10'! Il C 0.0' O.T 13276! 0.0769d 1021l 2.8E-03 2.8E-03; 2.9E+03t 2.9E+03! i I-10 1! 5' O.0' O.0' 13276' O.07692; 1021! 2.8E-03l 2.8E-03! 2.9E+03l 2.9E+03! t i~ 10! 6' O.0' O.0 13276! 0.07692t 1021l2.8E-03 2.8E-03! ' 2.9E+03i 2.9E+03' T f --- ]j - ~ - ~ ~ f 1021' 2.8E-03 4.5E-02" 2.9E+03! I 13276! 0.07692l 13276: 0.07692 1021 3.6E-02 8.9E-02" 3.7E+04' 4.6E+04' ]

  • ' ~

~ 1l 8' 22.5t 54.7' 1 7t 0.0! 27.5! 10. 9.1E+04' I 10! } j 10' 11 9' 29.4f 0.0' 13276l 0.07692 1021 ' 4.8E-02i 2.8E-03; 4.9E+04 2.9E+03 l i i 10I 1+ 10! 0.0; 0.0: 13276[ 0.07692 2.8E-03; 2.9E+03! 2.9E+03 ^ 'h -{- ~ ~ t-~ ~- ~ - - - 2.8E-03f ~ 2.8E-03{ 2.9E+03;-' 2.9E+03 ~2.8E-03: 1021 10' ~1 ~ 11t '0.0: 0.0' 13276; 0.07692' 1021 ~- '~ - ~ ~ - j ^' - - - - ~ ~ ' 10E 1 12! ~ 0.0: 0.0: 13276, 0.07692 1021 ' 2.8E-03 2.8E-03! 2.9E+03l 2.9E+03 - - ~* l i 10l 1!' 13i 0.0! 0.0! 13276!'O.07692i 1021 ' 2.BE-03 2.8E-03! 2.9E+03[ 2.9E+03 T~~~ ~ ' ' ' ~~j-~-+'--- 10' It 14 ~0.0l 0.0' 132761 0.07692l 1021 ' 2.8E-03 2.8E-03!~ 2.9E+03i 2.9E+03 '~ - ]~~~-~~~ 10 " If 15 0.0l 0.0' 132767 0.07692{ ~ ~ 1021 ' 2.BE-03 ' 2.8E-03i 2.9E+03I 2.9E+03 1.2E+05 71.7E+05' ~ 1.5E+03 -'2.1E+03! '~ 1 5E+00 2.1E+00 10I 2;' 4 'O.0: 0.0' 13276! 0.07692i-~~ 1021 2.0E-03 2.0E-03L 1.5E+03{ ~ 1.5E+03, 10l 2' 5 O.0! 0.0' 13276' O.07692* 1021 2.0E-03 2.0E-03I 1.5E+03, 1.5E+03' 10l 2f 6] 0.0! 0.0 132761 0.07692 1021 2.0E-03 ' 2.0E-030 1.5E+03 1.5E+03 10 2! 7j 0.0: 0.0' 132767 0.07692l 1021 2.0E-03 2.0E-03 1.5E+03 1.5E+03 10f 2{ 8! 0.0! 0.0l 13276t 0.07692{ 1021 2.0E-03' 2.0E-03 1.5E+03 1.5E+03'~ ~ ~~ 101 21 9' O.0: 0.0 13276! 0.07692 1021 2.0E-03' 2.0E-03' 1.5E+03 1.5E+03 -~ ~ - - - - ~ - ~ - ' ~ ~ ~ 10{ 2l 10! 4.5[- 0.0t 13276! 0.07692 1021 5.2E-03 ~2.0E-03 3.9E+03 1.5E+03 ~ --' --~ ~ ~ ~ ~ ~ ~ - - ~'- 10, 2I 11 ~ 0.0; 0.0l 13276F 0.07692 --~ 1021;( 2.0E-03" 2.0E-03 1.5E+03f-l.5E+03 -'-- ~ g ~'--~ ~ ~ -- 10[- 2l '12 ~0.0[ ~0.0; 13276l'O.07692[i 10211 2.0E-03 '- ~2.0E;03~ 1.5E+03 1.5E+03 [C- --- - ~-- ' 10' ~ 2" 14' O.01 '0.0I 13276! 0.07692 ~ 1021F 2.DE-03" 2.0E-03" 1~.5E+03 1.5E+03r- --- - - - - - - - - - - - - -~~ - ~- - {C- - --' ' 10 2' - 13' ~0.0; 0.0, 13276, 0.07692 1021[ 2.0E-03 ' 2.0E-03 1^5E+03' 1.5E+03 F 10! ~~2 15 0.0 0.0! 13276f 0.07692 1021" 2.0E-03 2.0E 03 -' 1.5 E +037.5E+03 ~~2.0E+04 '~1~.Ef+04' ~5.1E+02 4~.5 E+02~ 5.0E-01 T.4E-01 10{ ' ~ 3I ~ 4 ' ~ 0.0^ ' O.0! 13276F0.07692 - 1021 ~ 1.2E+03 ~1:2E+03-- ~~--~' ~ ' -- ~ - ~]-- - ~2.0E-03 2.0E-03 1.2E403 ~ 1.2E+03 ~- - ~ ~ ~~ 2.0E-03~2.0E-03[! 10' 3i 5 0.0: ~ 0.0 13276 ' O.07692 --~ ~ 1021 ~2.0E-03 1.2E+03 ~~1.2E+03~ ~ ~ ~ - ~ ~~~-~~'~ '- - -~

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10! 3! 6 0.0!' ~ 0.0' 13276 ~ 0.07692 ' - - ~ 1021" 2.0E-03 2.0E-03[' 1:2E+03 ~ - ~ ~ ' ~ ~ - - ~ - - - 10I ' 3! ' 7i ~~ 0.0F ~~- 0.0I 13276 0.07692 1021 ~2.0E-03 ' ~ 1.2E+03 10: 3i 8! - 0.0 0.07 13276i 0.07692 1021 2.0E-03'~2.0E-03 ' 1.2E+03' 1.2E+03 ~- ~ - ' ~~ ~-- ' - - ~ - ~ ' 10! 3! 9! 0.0 O.0' 13276i 0.07692 ~ ~1021 '2.0E-03b2.0E;03 1.2E+03 1.2E+03i ' - ~ ~ ~ ~ ~ ~ ^ ' ' -- - - ~ 10 3l 10' ~ 0.0; 0.0I 13276T 0.07692~- 1021'~2.0E-03f 2.0E;03 12E+03 1.2E+03 ~ ~ - ~ - ~ ~ ~ - ~ ~ --~ -- i 11 0.0! 0.0[ 13276I ^0.07692 - -~~'1021 ' 2'0E-03 2;0E-03~ 1 ~ 2E+03 ' ~ 1.2E+03 ~~ h ~-- - ' - - - -~ 10 10! 3{ 3 12 0.0! 0.0 13276 0.07692'~~-~1021 2.0E-03~ 2.0E-03 ~~1;2E+03'~ 1.2E+03 -~- - * - ~ 10 3i 13' O.01 0.0! 13276" 0.07692 ~ ~1021 2.0E-03 '2.0E-03' 1.2E+03 ~1.2E+03 -" ]j- -- ~ ~ - - - 10! ~ 3" 14{- 0.0{;~ 0.0{ 13276 7 0.07692 - -' 1021 ' 2.0E-03' 2.0E-03i'1:2E+03

1. 2 E+ 03" ~ ~ ' ' ~ ~-- '

~ ~ - ' 0.0 107 3i' ~ 15 j ~ 0.0> 13276 F 0.07692 1021 2.0E-03' 2.0E-03{E 1.2E+03 ~ 1 2E+03 1.6E+04 1.6E+04~~~ 4.9E+02! ~4.9E+02 ~4.BE - - - ~ ' ~ ~ - ' 1.2E+03 ~ 1.2E+03' ~ ' - ~~ ' ~ ~ - - ~ ~ ~ ' 101 3! 16i 0.0l 0.0! 13276! 0.07692 ~^-~ 1021 '2.0E-03 2.0E-03 4.BE-01 10; 4! i' O.0{ 0.0! 132761 0.07692 10: 41 5 0.0. 0.0' 13276I 0.07692i 1021 ' 3.5E-03, 3.5E-03[ 5.2E+03, 5.2E+03' '- '~' 1021 3.5E-03 ~3.5E-03 5.2E+03 5.2E+03 ~ ' - ' ~ I 3.5E-03" 5.2E+03f' ^ 5.2E+03 '-~ ~ - ' ~ ~ ~~ 10' 4 6 0.0' ~ 0.0! 13276! 0.07692i ~ ~ 1021 3.5E-03t I 7' ~ 0.0'~ 0.0l ~ 13276!' O.07692!- 1021 - 1021 ' 3.5E-03f 3'5E;03~ 5.2E+03[! 10' 4 3.5E-03 3.5E-03~ 5.2E+03 5:2E+03- - ~ - - - ~ ~ ~ ~ - ~ - - - ~ ~ ~ - - 10' 4! 8 0.0t 0.0' 13276h 0.07692' 5.2E+03l-~~ ~ ~ - - - ' ~ ~ ~ ~~ ~ ~~ ~ --- h 0.0? 13276! 0.07692! 1021 3.5E-03i'3.5E-03' 5.2E+03! 5.2E+03F ^ ~ ~ ~ ~ ^' ~ ~ ' ici 4! 9~ 0.0 10' 4' 10' O.0! 0.0' 13276' O.07692f 1021 3.5E-03i 3.5E-03 ' 5.2E+03! 5.2E+03I 10' 4i 11' O.0' O.0' 13276' O.07692~ 1021 3.5E-03i 3.5E-03! 5.2E+03!5.2E+03! I 5.2E+03! 5.2E+03! 10' 4! 12 0.0: 0.0: 13276' O.07692 1021 3.5E-03 3.5E-03 10l 4: 13! 0.0! 0.0: 13276' O.07692' 10217 3.5E-03 3.5E-03 5.2E+03' 5.2E+03! 10' 4: 147 0.0: 0.0' 13276' O.07692: 1021' 3.5E-03' 3.5E-03! 5.2E+03! 5.2E+03l 1021f 3.5E-033.5E-03! 5.2E+03i 5.2E+03' 10! 4: 15' O.0' O.0' 13276' O.07692' 10' 4; 16' O.0' O.0' 13276' O.07692i 1021' 3.5E-03' 3.5E-03! 5.2E+03! 5.2E+03! l 10' 41 17: 0.0' O.0' 13276' O.07692: 1021 3.5E-03 3.5E-03I 5.2E+03! 5.2E+03! 7.3E+04I 7.3E+04 5.3E+02 5.3E+02! 5.2E-01 5.2E-01 Page 8 of 15 2/3/97

O O O da W5P DATA AND CALCULAT3DN OF AF.IIVI1Y BY REfs5URtMtml ELtMtui j TRENCH 'TWSP ' D_ EPT_ H9_9_3 U-235 995 U-235.TR AREA.TWSP VOL 1993 0 1995 U I~1993U' 1995 U '1993 U' 1995'u V3 U-235 ~95~U-235" 93 V 235 '95 V 235 BY TVSP-~ BY TWSP ' EBY TMSP i Y TWSP AREA ~~ ~'BT TWSP B t it pci/g pci/g ! ft2~f TRAC ft3" Ci ' CI~ g g [ g ~ ~ -- /f t2 - ~ gIf t2 - - g -- ~~'g g g lu 3, u.u, u.u uza u.uv ow iue t 3.>t-us. 3.>E-us ).et+u4 3.et+uf 10' 5' 5! 0.0! 0.0' 13276i 0.07692 1021 3.5E-03l3.5E-03 5.2E+03' 5.2E+03: ~~~ 10' 5 6! 0.0 t 0.0' 13276j 0.07692 1021 3.5E-03: 3.5E-03 '5.2E+03' 5.2E+03 g-l 10' 5 7! 0.0[ 0.0: 13276; 0.07692; 1021 3.5E-03 3.5E-03 ~5.2E+03 ~5.2E+03 ~ 5;2E+03 ^ ~ - -- ~ - ~ ~ - ~--- g 1 01 5 8I 0.0l 0.0' 132761~ 0.07692 ~ 1021 3.5E-03' 3.5E-03^ 5;2E+03 ~-~0.0'!^~ 0.0I13276f0.07692l~- ~1021 3.5E-03' 3.5E-03 ~~5;2E+03~ 5:2E+03 ~ ' - ~ ~ ~ ^ ~ ~ ' - ~~ 't~---~'~ ~~ ~10 5 ~ ~ ~ ~ 9 [~ - 'O.0F- ~ 1021 3.5E-03 ~3.5E;03 5;2E+03 "5.2E+03" 0.0; 13276- 0.07692 ~10 - 5 ~~~ ' 10 0.0 '48.3! 13276f 0.07692' ~1021" 3.5E-03 9.7E-02 -~5.2E+03~ 1.4E+05 ~ ~ ~ ~ '-'~ ~ - ~ ~ ~ - - - - - - ~ - ' ~~ I 10 5 11 101 5 - - ~ ~ 12 85.3f 22.0! 13276 0.07692{- ~ 1021 ' 1.7E-01' 4.4E-02 " 2.6E+05 ~~6;6E+04 t 4.7 13276I 0.07692 ~ 1021 '~2.2E-02 9.5E-03 '3.3E+04 1.4E+04" - - - ~ ~ ~ '- ' - " - - - - - ~ ~ - - - '~~~~~ ~ 10I 5~' 13 ~ - - 11.1[~~' O.0 13276! 0.07692 ' 1021 3.5E-03 3.5E-03' 5.2E+03'- 5;2E+03 ~~ ~ ~~'- ~~ '~ ~ -'~- ~~ ~ ~ ' ~ ~ b 10l ~~ 5 14' O.0! 10; ~ 5" ~15 ~ 0.0! 0.0 13276F 0.07692C 1021 3.5E-03 3.5E-03 5.2E+03' 5.2E+03 ~ ~ ~ ~ - " ~ ~ - - - ' - - ~ ' 13276b 0.07692 -~1021O.07692f~1021 3.5E-03 ~3.5E;03 ~~5.2E+03(5.2E+03" -~ - ~ ' - ~ - ---~--~ ~ - 10i ' ~~ 5 '16 - - ' O.O p 0.0. ~13276' ' 3.5E-03 3;5E-03 5:2E4037 5:2E+03- - - - ' ~ - ~~2.6E+03[~2.1E+03 ~ - - - ~ ~5 ~ -~ ~ 17 --~ -

0. 0 E ~~ O. 0 10' 5

18' ~ 'O.0f~~0.0 13276' 0.07692 - -- 1021 ' 3.5E-03 3.5E-03 ' 5:2E+03 5.2E+03{ ~3.6E+05 ~ 2.9E+05 2.5E+00 2.0E+00 ~ ~ ~ -~ 5[} ~' - -" 0.0l-~ - ' O.0 ~ 13276"~ 0.07692- ~~1021 3.5E-03[ 3.5E-03 5.2E+03 5;2E+03 ~4 0.01 0.0 13276 10E 6 1 01 ' - ' 6 0.07692 1021' 3.5E-03 3.5E-03 ~ 5;2E+03 ~ 5;2E+03- - - -^ - - - - ~ ~ ~-~ ~~~--- - - -- -- 10! 6 ~ 6i ~ ~ 0. 0 ~ 0.0 13276i 0.G7692 ~-- 1021 3.5E-03 ' 3.5E-03 5.2E+03 ~5.2E+03' ^ 10!~- 6 ~ ~'7 p --~0.0i-- 0.0 13276! 0.07692p 1021'~3.5E-03 3.5E-03 5:2E+03 ~ 5;2E+03" -~~ ~ ~ ~ ' - - ~ - 10~ 6" 8E 0.0! ~ ~ ~ 0.0 ~ 13276" 0.07692{ ~ ~ 1021 3.5E-03~ 3.5E-03 5;2E+03-~5.2E+03 - ' - - ~ ~ ' ~ ~ ~ ' - ~ - ~ ~ ~ ~ 13276b0.07692 '1021 3.5E-03~3.5E-03 5^.2E+03 ~ 5.2E+03 ' ~ ~ - - - ~ ~ - - ~ - " - - - - ' ' ~ ~ '~----~ 10 6 ~9~ 0.0 ~ 0.0 10f '6! 10 ' O.0 - ~ 0.0 13276{0.07692j-- t 1021 ~ 3.5 E-03 3.5E-03 5.2E403 ~5:2E+03 ' ' ~ ~ - - - ~ 0.0f 10'!'-~ 6" ' ' ~ ~ ~ 0.0h-~~0.0I13276{J13276 ~ 0.07692h' - '1021 0.07692 ~ 3.5E-03 3.5E;03 ~5:2E403 5:2E+03 ~ ~ ~ ' - ~ ~ - - - - - ~ ~ - 11 ~ ~ ~ I 0.0{-O.0 132764 0.07692j 1021 3.5E-03 3.5E-03 5.2E+03 -'5.2E+03 ~ ~' ~ ' - ' ~ ~ - - "'-'---F----' - - ~ - ~ ~ ~ 0.0 1021 3.5E-03 3.5E-03i '5.2E+03~ 5.2E+03 - ~ ~ ' ~ ~ - - - ~ ~ ~ - ' ' ~ ~ ~ - - - - 10 6' ~ - ~ 12 10 ~ 6 ' ~ ~ ~ ~ 13 ~ 10' 6 '14 0.0; 0.0 13276l 0.07692F 1021 '3.5E-03 ~3.5E-03'"5.2E+03 ~ 5~.2E403'~ - - - ~ ~~ ~~ - ' - ~ ~ '10' 6' -' 15 ~ 0.0!- 0.0l 13276' O.07692P 1021 ' 3.5E-03 3.5E-03 5.2E+03' 5.2E+03' 10' 6F '16 - 0.0f 0.0i 13276 0.07692' ~~1021 3.5E-03b3.5E;03 5.2E+03 5.2E+03 ~ ' ~ ' - - ' - ~ ~- ' b --~ ~ "- --^ 10-6' -~ 17 ~ 0.0E-~" 0.0! ~ 13276' O.07692 ~ ~~1021 ~3.5E-03b3.5E;03 5.2E+03~ 5.2E+03 --~ " - - ~ ~- 10! 6F 18i 0.0{ ~ 0.0 13276{~0.07692 - 1021 3.5E-03'~3.5E-03" 5.2E+03' 5;2E+03 ~ ~ ~ ~ ~ ' - - - - - ~ 10I 6! 19! 0.0 0.0 13276j 0.07692 1021 3.5E-03 3.5E-03' 5.2E+03 5.2E+03' 8.4E+04 8.4E+04 6.0E+02 6.0E+02 5.9E-01 5.9E-01 10' 7' 4 0.0' O.0 132761 0.07692 - 1021 3.5E-03 3.5E-03 ~5.2E+03' 5.2E+03i I -~ -- ~ ' ~ ~ ' - ~ ~ - 13! 5 0.0 0.0 ' 13276f 'O.07692 1021 3.5E-03 3.5E-03 5.2E+03' 5.2E+03 ' 10' 7l ' 3.5E-03[ 3.5E-03 3.5E-03 3.5E-03' 5.2E+03 5.2E+03I ' - - ~ ~ - ~~ 7 6l 0.0 ~~~'O.0 13276f' O.07692 '-~1021 10! 7l ' 7{ ~0.0f-0.0I 13276l ' O.07692 -~ ~~ 1021 5:2E+03 ~ 5.2E+03 " --- ~ ~~ 7{ - 9'b O.0l~' 0.0; 13276['O.07692' ~ 1021 ' 3.5E-03' 3.5E-03 ' 5.2E+03 5.2E+03 ~ ' - -' ~' ~' - - ' ~ " ~ - - - - - - - ~ ~ 0.0! 0.0 13276! 0.07692' 1021 3.5E-03 3.5E-03 '5.2E+03 5.2E+03 10: 7 ' 8r 10! 10

0. 0. ' ~ 0.0; 13276, ~0.07692 1021 ~3.5E-03 ~3.5E;03 5.2E+03" 5.2E+03

- -~~ ~ ~ ~ ~ -~~ - - ~ - 10! 7-10' 7! 11f. 0.0f-~"0.0!13276!0.07692 0.0i 0.0! 13276[ 0.07692 ~~~ 1021 3.5E-03 3.5E-03 5.2E+03~ 5.2E+03' b ~ - -'-~ --~ + ~~ ~ - - - - ~ ~ - -- ' - ~1021 3.5E-03 3.5E-03 5.2E+03" 5.2E+03' ~ ~ ~ 10! 7{ 12 --~' 10f 7l '14' ' O.0I-~ ~ 0.0;~ 13276i 0.07692P 1021 ~3.5E-03 3.5E;03 5.2E+03 10: Ti 13"-~ 0.0 E 0.0 13276 0.07692'-- ~1021 ~3'5E-03 ~ 3.5E-03~5.2E+03' '5.2E+03 t - ~ ~ - ~ ~~ ~ ~---- ~ 5.2E+03 E ~ -' ~ 10l 7l ~ 15 -- 'O.0l 0.0 13276f 0.07692!~-- 1021[3.5E;03 3.5E-03i 5.2E+03~5.2E403[--~~~ - t 10{ 7i 16i 0.0l ~ 0.0I 13276' O.6/692'~~~^1021 3.5E-037 3.5E-03i 5.2E+03'~5;2E+03! ~ ~ ~ ~ ~ - r 10, 7j 17j 0.0} 0.0; 13276! 0.07692' 1021' 3.5E-03t 3.5E-03i 5.2E+03 5.2E+03! 3.5E-03 ~ 5.2E+03 5.2E+03l, 10; 7; 18' O.0 0.0' 13276' O.07692 1021 3.5E-03 3.5E-03 5.2E+03 5.2E+03 0.0l 0.0' 13276' O.07692 1021 ' ~ 3.5E-03' 10: 7j 19 10' 7; 20 0.0 0.0l 13276' O.07692' 1021 3.5E-03 3.5E-03 5.2E+03 5.2E+03t 8.9E+04 8.9E+04 6.4E+02 6.4E+026.3E-01 6 3E-01 10! 8t 4! 0.0;1 0.0: 13276' O.07692! 1021 3.5E-03 3.5E-03 5.2E+03 5.2E+03! 10' 8! 5 0.0! 0.0; 13276' O.07692l ~1021 3.5E-03 3.5E-03l 5.2E+03 5.2E+03[ 10 81 6' O.01 0.0: 13276' O.07692l 1021 3.5E-03 3.5E-03} 5.2E+03i 5.2E+03' O.0' 13276: 0.07692! 1021 3.5E-03 3.5E-03!5.2E+03!5.2E+03! 0.0'! 10' 8! 7: O.0 0.0' 13276' O.07692! 1021 3.5E-03 3.5E-03! 5.2E+03! 5.2E+03! 10. 8' 8' Page 9 of 15 2/3/97

I 9 O O 2" IW5P DATA AND CALCULAIION OF ACTIVIIY BY MLA5UREMENI ELEMtsel i 1 4 i I Y TWSP j 95 U-235 93 U-235 ' 95 U-235 i 93 U-235 TRENCH TWSP DEPTH 993 U-235 995 U-235TR AREA TWSP VOL 1993 U 1995 U 1993 U 1995 U~ 1993 U 1995 U' I AREA .BY TWSP ,BY TWSP^ B -BY TWSP ~,8Y TWSP ~18Y TWSP~ ~~ '[ Ci/g ' g ~ - t- - g ~ ' F ~ g/f t2 ~t g/f t2 ' 'ft pCi/g~ I p i ft2 1 FRAC ft3 Cl i Cl g - g - t g i g ~ tu a v. u.u u.u Iwo u.urove we l : 3.>t-us, s.>t-ua ).it+usi ).<t+us. 10' 8' 10! 0.0l

0.0 13276

0.07692. 10211 3.5E-03; 3.5E-03[ 5.2E+03! 5.2E+03 l 'j~-~~~ 1021 3.5E-03 5.2E+03 5.2E+03' 10' 8! 11! 0.0t 0.0: 13276! 0.07692l 1021l= 3.5E-03{ 3.5E-03i 10: 8! 12! 0.0f 0.0' ! 0.07692 3.5E-03 5.2E+03 5.2E+03 ~~ -~ 0.0{ 0.0[1327613276! O.07692l 1021 3.5E-03 ~3.5E-03 5.2E+03 5.2E+03, ~~ ~ ~ y~~~ 10l 8' 13! 0.0 10' Bf - 14; 0.0 13276' O.07692-1021 3.5E-03 3.5E-03 5.2E+03 ' 5.2E+03! 10' 8{ ' 15) 0.0 l 0.0l 13276' O.07692' 1021 3.5E;03 3.5E-03 5.2E+03 _5.2E+03fl_ ~ ~ 10 8: 16i 0.0; ~ 0.0, 13276' O.07692 1021 3.5E-03 3.5E-03 5.2E+03 5.2E+03; 3--- ~ 10; 8l 17j - 0.0j ~ 0.0 13276) 0.07692 1021 3.5E-03 3.5E;03 ~ 5.2E+03 5.2E+03 4 10!-~ '8F - 18 - ~ ~0.Di 0.0 13276" 0.07692" ~1021 3.5E203 3.5E-03' 5.2E+03' 5;2E+03 - - - ~ -~ ~ ~ ~ ' ~ ~ - '- ' ~ ~ ~ ~ ~ ~ ~ - ~ ' 1021 ~3.5E-033.5E-03 5.2E+03 ~ V.2E+03h - ~~~-~ ~ ~ ~ ~ ~ ~~ ~ ~ - ~ ~ ~~^'~6.8E+02f-6.7E-01'6~.7E-01 O.0~13276h0.07692'~ 1021 ' 3.5E-03' ~ 3.5E-03 ~ 5.2E+03 ~ 5:2E+03 - - ~ - - ~~ ~ -~~' ' - ~ ~ ~ ~ - - - 10' - 8f 19~ ~ 0.0H' I f 0 ~ - - ~ - ~ ~ * - - ~ - - 10 '- 8 ' 20? ~ 0.0 0.0 '13276l 0.07692 5.2E+03b~9.4E+04 9.4E+04 6.8E+02 10! - 5.2E+03[ SUM ~~ ~ ~ ~ 8' ~21I~ 0.0 ~ 0.0'~13276?~0.07692 ~1021 3.5E-03 ~3.5E-03 t ' ~1;6E+06 t __- ~ ~ '.. _. _ _ _ T._~ '. - 4 ____ _ _1_.5_ E+06_~ 6.1E+04'-~5.7E_+04 .-~__l~~~_'~.~~_.- [ _ s .__L __ _ ___] __j... _ _ _ _ TOTAL U ACTIVITY, PORTIONS OF TRENtHES REPRESENTED BY 2" TWSP$, Ci 3.2E+00 '3.0E+00 ~ ~ - ~ - - - ' - - - ~ ~ ~ ~-l--~~~ '~-- - ~ ~~ TOTAL U ACTIVITY, PORTIONS OF TitENCH 10 REPRESENTED BY 2" TWSPS, Ci 6.3E-01 6.3E-01 ~ ~~ ~~ ~ ~ - - - ~ 1.6E+06F 1.5E+06' TOTAL U SS, TIONS O TRENCHES REPRESEN ED BY 2 TWSPS, g ~~^ 8.5E+05' ' 8.3E+05 ~ ~ ~ -- TOTAL U MASS, PORil0NS OF TREN H 10 REPRESENTED BY 2" TWSPS, g ' )){ 7 --~~1 - - - ]--] ))] 4" TWSP DATA'AND CALCULAtlON OF ACTIVITY Bt EMENT'ELEMEdT -~ ' - ~ ~ ~ ~ ~ ~ - - ~ ~ ~ ~ - ~ ' ' ~ ' ~ ~ ' ~' - " -' ~" ~~~~ ~ -~~ ~I U-~ U-235-- U-235 g TRENCH' ~T_WSP ~ D_EPTH__{_.U_-235~ -~ TR AREA ~ TWSP '_ ~ V_ _O_L ~ ~~ 10T ' _LF _ TOT ~U ~_ ],y.TuSP ~~ g 7 g ~~I-~TWSP~ ~'sY TwSp ~ [ }f- --- -- sY~ g 9 _ _ _ _ __,, _ ~ h pC1/ g ~~ ~ft2 ~ FRAC ~ ~~ft3 ~' - CI-~ 0 --~'t'~ g/f t2 -- ._ _ _j __ _ _ _ _.. _ _ L__ _ _ _. j 0.66~ ~ 10472 0.09091 ~~ ~ 952 ~6.0E-04' 1.1E+02' ~ ~ ~ .g .~ ~ 5 {- -0.30j - 10472 0.09091- - 952'-2.BE;047 5.3E+01 - - - - - ~ ~ 1 ^ 7;' 6i 3.57 10472 ^ 0;09091 - ~952 '3.3E-03 ~6.2E+02 ' ~ ~ ~ ~ ' ~ ~ ~ ~~ ~ ~~ - - ~ ~~ ~ ~ ~ ~ ~ ~ ~ ~ - ~ - - ~ ~ ~ 7 12.11 10472i ~ 0.09091 ~~ ~ 952 1.1E;02~ 2.1E+03 ~ - - - ~ ~ ~~ ~ ~ ~ ~

~

- - - - - ~ 1 7l -- ^ ~ ~10472P U.09091 ~ 952 2.6E-02~5:0E+03' - - ~ ~ ~ 7 _. .__gp_. 28.69 1 7 9F ~ ~ 3.47p- ~ -~ ~ ~ ' -~ 10472! 0.09091~ ~~ ~ 952 3 2E-03 ~6;1E+02 --~~ 4 ~ ~ ~ ~ ~ - ~ ~ - - - ' ~~- - ~ ~ f- -~-- - - ~ - - ~~ - - - ~ - ~ - - ~ ~ H ~ ~~ b 2.0E+03 1 7j ~ 11] ~ 47.32'- [ 10472f -'0.09091 952 4;1E-04 ' 1;1E+02 ~~~ -t 10472 ~~ ~ " 952 ~ 4.9E-03 ~ 9;3E+02 3 7..~ ~ 5.33 ~1;8E+04 ^~2.1E+00 7 -~ ~ ~ ~ ~ b' O.09091 952 ~4.3E-02 ~8.3E+03 10472 0.09091 1} 8' 41 0.44' ~ 1 8! Si 'O.53 ~ ~ f 10472[: ~ ~ 952 -4.9E-04t - 1.3E+02 ' --[- - ~ ~ --~~ '- --~ ~ ~~ ~ ~ ~ ~ - ~ ' - - ~ - - ' 952 4.9E-04f 1;4E+02' - ~ ' '~ ~- -- ~ - ~ - 0.09091 li 8! 6' ~ -0.53 104721 0.09091 It ' 8' 7: 0.25 ' ~ 104727 0.09091'~ 952 ~ 2.3E-04" 6.3E+01 ~ ~ ~ ~ ~~ ~ ~ '~ 11 8; 8! -0.12 10472 ~ 0.09091 952 -1.1E-04 -3.0E+01 0.09091f 952 ~8.BE-05 2.4E+01 ~+-~~J~~ ~ ^ ~ ~ li 8i 9 0.10 10472 1 1! 8' 10 0.13 10472- 0.09091t 952 1.2E-04 3.2E+01 '~ l' 8' 11' O.91 10472! 0.09091l 952 8.4E-04 2.3E+02 4.3E+02 3.4E+01 ' 3.6E-02: 1! 9l 41 0.02 10472! 0.09091t 952! 1.6E-05 4.3E+00, i 952i 3.9E-04;t 1.1E+02j l' 1! 9; 5: ' O.42,! I' 10472l 0.09091! 1; 9: 6' O.19:

10472i 0.09091l 952 1.7E-04I '4.7E+01'i 1;

9! 7; 0.77j ! 10472; 0.09091' 952 7.1E-04 2.0E+02 1! 9! 8' -0.28' i 10472: 0.09091l 952 -2.6E-04 -7.2E+01 f I i i Page 10 of 15 2/3/97

e e 9 4" IW5P DAIA-AND CALCULATION OF ACIIVIIY BY MEASUEitMLNI ELLMENI l r TRENCH TWSP DEPTM U-235 'TR AREA TWSP VOL TOT U TOT U U U-235 U-235 ~ ~ ' ~ ~ ~ - ' ~-~ I AREA ~ ,8Y TUSP '.BY TWSP ' BY TWSP ' ' ' ~ ~ ~ ~ t ft pCl/g ft2 i' FRAC 1 ft3~~ ~ Cl o t~ g i g i g/ft2 ~ ' ' ' - ~ - - -~~- i-v. v -i.a iuwe u.uvuvi y m -i.6e-us -4.ut+uz - - ~ ~ ~ ' ~- - ~ - ~ l' 9' ici 1.23! I 10472: 0.09091: 952' 1.1E-03' 3.1E+02 ~ l ~ - -- ' 10l 11! 0.37l 10472i 0.09091f 1l 9 952 3.4E-04' 9.4E+01 2.9E+02 2.3E+01 ' 2.4E-02 H 10;;. _ 4[ -0.90[ 10472l 0.09091 952'-8.3E-04 -2.3E+02' ~ - ~ _ ~ ]~~ '~ )) ]-]~} j ---] 1! Si -0.08: 10472 0.09091 952 ;7.3E-05 -2.0E+01 1" 10{~ 6l -0.46[i 10472l; 0.09091 ~ 952[ 5.7E-04 1.5E+02 - - - ~ ~ ~~ '~'-~~~g~~~'-~~ 0.61 1 to 7g 10472l 0.09091 _ 952'-4.2E-04 -1.2E+02 1 10'; 81 -1.07i 104721 0.09091 952 -9.8E-04 -2.7E+02 ~ ~ ' ~ ~ 10472lE0.04545{ 1 10 9l ~ 0.41 1{ 10472 0.09091 95?3.7E-04 1.0E+02 -3.7E+02 'L3.0E+01 -3.1E - ~- ' ~ - ~ ~ ' ' ~ ' ~ 11 ~~ ~ 4! 'O.28: 476 1.3E-04 3.5E+01 ~ ~~ ~ I 1 11 5l -0.70 10472l 0.04545 476 -3.2E-04 -3.8E+01 1 11 6[ -0.28 10472" 0.04545 476 -1.3E-04 -3.6E+01 1 '11 ~ ~ ~ 74 -0.08 10472~ 0.04545 ~ ~' 47673.8E-05 '-1.0E+01 ' ~ - ^ ~ j ~ ~~ ~~~ ~ ~~~{~ 10472~ ' O.04545{- ~~ 476" 1.7E-04 '4:6E+01 -5.3E+01 ~-4.3E+00 ' ~ -B.9E-03 ' ~ ~ -~ - ~ ' ' - - ~ ~ ~ ~ ..'._ M.~~--~f~' O.37" ~~' 10472 4 0.25 'O.04545 ~1.2E-04 ~4.1E+01 ' - ~ ~ - - ' ~ -~~- b ~ --~ 476 h.0E+01 ' - ~ - ~~ ~~ ^ ~ ~ ~ ~ - ~ ' ---b-~~-~- ---_ _ $;___~ 0.55 -~ ~ 10472 ~0.04545 476" 2.6E-04 9 4.9E+01' - ~ ~ ' ~~ + - -~ ~ ~ ~ ~~- - ~ ~ --'~-~~ - ~ ~ -~- ~ -0.30 '~ '~ 10472 0.04545 '-~~~ 47671.4E-04 _7 .- d - - ~ 0.04545 - ~476" 5.0E-04 T.7E+02 ' - ~ - ~- - - - ~ ^ --' ~ - ~ ~ ' ~ ~~ - - - ~ ~- --- ---~ ~- 1 12' 9 ~ 0.93' 1'10472~0.04545 ~ ~ ~ 476 -2 2E-04 -7.5E+01 - - - - ~ ~ ~ ' - ~ ~ ~ ~ - ~ ~ ~ ~ ~ ~ ~ - - ~ ~ __Q__.8" -0.45 10472 '0.04545 ~476" 4.4E-04 1.5E+02 3.4E+02 2.0E+01 4.3E-02'~ ~ ~~ ~ ~ ~ - - - ~ ~ - - ~ ' 3.2E+02[- - ~ ~~ ~ ' - ' ~ ~ '~ ~ ~ ~ ~ ~ ' - - ~ - ' ~ - ' ~~~~~ 2' 5 4' 2.40 7802 ~ 0.14286 ^- 1115 2.6E-03 2 - 5 5' 3.60 7802 ~0.14286 1115' '3~9E-03 ~4.8E+02 ~ - ~ ~ - ~ ~ - ' ~ - ' -~ ~ - - - ~ ~ ~ --~ - - 2 5 6 1.98" 7802f0.14286'-~~-~1115 ' 2.2E-03 2.7E+02 ~~ ~~ 7802 0.14286 -~ - 3.9E-03 4 ~.BE+02 {'--~ - ~ --~ ~ - ~~ 2 5 '7 - ^ ~ 3.60i ~ 2 5 ~~ 8' ~ ~ 12.57[~~~ ~~ ~ ~' 7802 ~ ~ 0.14286h- ~ 1115 1115 '~1.4E-02~1.7E+03 ~~- - - - - ~ '5 ~ -~9-12.80i 7802 '~'u.14286 1115 1.4E-02 '~ 1:7E+03 ~~ ' - ~ ~ 10H 7802 7 0;14286"-- 1115 1;1E-02 1;4E+03 ~ ' - - f - ~ 11 f ~ 10.24{~ --- 2' ' ~ 5 '2[ - 5 ~ 1.58 ~ - ~ ~~ 7802~ 0.14286-~1115 ' 1;7E-03 ~2.1E402 ~ ~ ~ ' - - - ~~' ~ - - ~ ~ - - ~ ~ - 1115 -2.5E-03 ' ;3.1E402[~~.2E+03 2j - 5 ~ ' 12 -2.33 ~ ~- '~~~7802'~0.14286 15;7E-04' 28.7E+01[ 6- - - - '- ' - ~ - ' - - - - -~ ~~ '~'---~j~~ 1.1E+03 ~ 9.8E-01 ' - ~ ~ ~ ~ ~ - ' ' ~ ~ - ~ ~ - - ~ ~ 2i 6" 4' -0.53 -~ 7802i 0.14286E 1115 -2.7E+02{- - - ~ ~ - ~ ' ~ ' - ~~ ~-- - t '- ~ 6 ~ ~-~5 m 1.62 -' ~~~~ 7802"~ 0.14286F-1115 ;1:7E-03 - ~ ;0.53 7802' 0:14286 1115 ;5 7E-04'78 7E+01 - ' - " " - -~-- -~ 2 j --~- ' 6 - 7 -1.12 {-~-'7802 0.14286 1115 -1;2E;O371.9E+02' ~ - ~ - ~ ~ ~ ~ ~ ~ 2 6"._ .Si -1.61 7802 0;14286 ~~~- 1115 21.7E-03'-2.6E+02 - ~ ~ ~ ' - ~ ~ ' ~ ~ ~- ~~ ~ - - - ~~ ~- p 9 09 ~ - ~ ^ 7802~ 0.14286 ~ ~ 1115 -3.3E-0375.1E+02~ ~ ~ ~ ~ - ~ ~~ ~ ~- ~ - - - 2 6 10 3.37 7802 ~0.14286 p 1115 ~3.6E-03~ 5.5E+02 ~ ' ~ ' - ~ ~ ~ 2 ~ 6 11 - 2.28 - - ~ ~ '7802j~0.14286 i 1115 '2.5E;03 ~ 3~.8E402~-4 7E+02 -6.7E+01 1. 2' 7 ~4 ~~~~-6.17 - ~ ~ - - ' ' ~ 7802 E 0.14286i 1115 -7.1E;03' ;53E+02- ~ ~ ~ - - '- ~ f 6~ 0E-02~ ~ ~ ~ ~ ~ - ~ ~ - - - ~ '~ ~ ~ ~' - - 7802j 0.14286 -~ 1115 27.6E-04 -5.6E+01 ~ ~ ~ ~ '~ - - - i 7802 0.14286{! -- 1115 2 ~7' ~5 -0.66' 2 ^~ 7 --~ 6 ~~ ~ 8.58; ~ ~~ ~ -~ ~ 9.9E;03 ~7.3E+02'-~ ~ ' - - '~ - ~ ~ ' ' ~ ~ ~ ~ - - t ~ 7802!' O.14286 1115 ~2.0E;02 ~ 1.5 E+03'-~ ~~ { ' ~ - ~ - - ' - ~ ~ 2j 7j '7 - ~17.06 ' 7# 8, 29.68f ^ T ~ 7802! ~ 0.14286 ~~~ ~ 1115' ~3.4E-02~2.5E+03i -b I 2 j '- [-- -- 10[ ' 20.45f ~ ~ - "' ' 78027 0.14286b-~1115 9 ' 2.4E-02 '~ 1 7E+03t 12l 16.99j[ ~ 7802~ 0.14286f~ -~' 1115 2! 7 13.42 1115"~ 1.5E;02 ' 1;1E+03 ~~ - ~ - l' ~~ -^ ~ ~ ~ ~ - ~ ' ' - ~ ' ~ - - ~ - ~ - - 2j 7j 11 7802 0.14286 2.0E-02' 1.4E+03 -- ~ 8.86 7802~0.14286! 1115 1.0E-02 7.6E+02 ~ ~ ~ ~ g ~ '~ ~ - 2; 7: 2: 7l 13' 14.67l 7802i 0.14286I ^1115 '~1.7E-02 ' 1:3E+03: ~ - ~ ~ - ' ~ ~ ~ ' - - ~ 2' 7; 14f 13.47l 7802i 0.14286! 1115' '1.6E-02 1.1E+03'l 1.5E+04 2: 7' 15l 39.19' 7802: 0.14286l 1115 ' 4.5E-02 3.3E+03 4.1E+03I 3.7E+00; 5 4f 4' -1.02I 3275: 0.20000t' 655'-6.4E-04 -1.0E+02 t 3275i 0.20000! 655 5' 41 5' 8.91! 5.6E-03 8.7E+02 i 4.5E-02f7.0E+03 5' 4j 61 71.38! 3275j 0.20000f 655 5: 4! 7! 47.36: i 3275 0.20000c 655 3.0E-02! 4.6E+03, Page 11 of 15 2/3/97

O O O 4" IW5P DATA AND CALGULATION OF AL11WITY BY MEA 5W LMtn1 ELtRtn6 TRENCH TWSP DEPTH U-235 TR AREA TVSP VOL TOT U TOT U U U-235 ~'U-235~ ~~ - - ~ ~~ ~ ~ ~ ^ ~ ~ ~ ' ~ l' AREA

8Y TWSP ' ' 8Y TWSP ' '.8Y TWSP

~1 g } g' ~t g/f t2 '-' ~~ ~ ~~ ~~~I-- - ~' --~ ft ' pCf/g ~ ft2 FRAC' ft3 Ci g 4 s 26.4% uo; u.cuuuu, on 1.rt-uz, 4.et+m ~ ~~ -~ ~ 6 ~ ~ ~~ ' - - - ~ ~ ~ ~ ~~ ~ ~ ~ - - ~ ~ 5 4 9 27.10' 32751 0.20000; 655' 1.7E-02j 2.7E+03 ~ --~ '~ ~ ~ ~ ~ ~ ~ ' ~ ~ ~ ~ ~ ~ ~ ' '~ ~ -- f ~4.81f~~ 3275~0.20000{ 4;2E-03[4;7E+02 5' '4 10 ' 3275 0.20000 655 3.0E-03 5 4 11 6.70 655 - 6.6E+02 '1.9E+04' 2.6E+03 4'.0E+00 ' ~~ ~ - ' ~ - - ~ ' ~ ~ ~ ~ ~ - - ~ ~ ~ ~ - - - - 5 5 4 ~0.59 3275O.20000j~ 655 4.2E-04 '~2;2E+01 T ~~-" -~~~ - ^-' - ' ~ ~ -~~ - ~ ~ ~ ~ ~ ~ ~ri-~~~~ ~ ~ ~~~~ 5 ~~'5 ~ ~~5 - ~ 0.44~~~ ~ ~ 3275 0.20000{m ~ 655 3.1E-04 ~1.6E+01 ~ ~~ ' ~ ~ ~ 5 5 6 0.51 3275 0.20000 655 3.6E-04 ~1.9E+01 ~ ^- ' ~ ' - ~ ~ ~ ~ ~ ~ ' ~ ~ - ^~ ~ ^~ 5'~~5 ~~ '~7 1.17 ' ~ ~ ~ 3275 -" 0.20000; '-~ '655 8.3E-04 ~4.3E+01 - ~ ~ - ~ ~ ~ ~ - ~ ~ ~ - ~ ' ~ ~~--- - - -~~-~ 5 5 ~ 8- ~ 1.33' 3275 ~ 0.20000i ~ 655 9.5E-04~4~9E+01 - ~ ~ ~ ~ ~ ~~---~~~ ~-^ ^ ^ ~ - ~ - - - - ~ ~ ~ ~ -- -~ ~^5 -~"~ 5 '-'9 ~ ~10.95 ~ 3275 ^0.20000['~~~655' 7.8E-03

4. 0E+ 02 ; ~' ~-~ '~ ~ ~~~~ ~

- - ~ ' ~ ~ ~ - - - ^ '- - - ~ - - ~ ~ 5 ~5 '- - 10 ~ 6.45 '~ 3275 ~~0.200001 ~'655 4.6E;03[2.4E+02 ' ~ ' - ~ - - - - ~ ~ ~ ~ ~ ~ ~ ~ - ~ ~ ' ~ ~ - - ~ " 5 5~ ~ ~ 11 ~ 7.59 ~ 3275 ~~0.20000F - ~655 5.4 E-03 T ~ 2.8E+02 5 ~5 - ^ 12 ^ ~ ~ 2.34' ~ '3275 '~0.20000h ~~ 655 1.7E-03 I 8.6E+01 - ~ ~~-~ '~ ~ ~ ~ - ~ - ' - ~ - - ' 3275" 0.20000 - 655~2.1E-02hl:1E403h ~' '~~ ~ ~ ~ 3275 0.20000[ ~~-- 655 ~5 5 ~ ~~ ~~ 13 ~~ 29.41 ..$.~~~-~5 - 14 f 165:49 ' 1;2E;01{~6.1E+03 ' ~ ~ ~ - ~ - - - - ~ ~^6 ~- ~ 131'.96[ {~~3275-~0.20000(( 5 -' 5 ' ~ ~ ~ 15 - 655 '9.4E-02 ~4.9E+03 1~3E+04~ 5.0E+03 ~ 7.6E+00 - ~70.18; 4938 ~~0.25000 _~ 1235 -2.3E-04 ;9.1E+01 ~~- - --~~~~ - - ~ ~ - ~~ ._. 4 5 '-~~ n 0.29 F ~ ' ' 4938 ~ 0.25000 1235'-3.6E;04' 21.5E+02 " - ~ ' - ~ ' ~ ~ ~ ~ ~ - ~ ~ ~ - ~ ~ - ~ ~ ~--~~ ' ~ ~ -0.87f "~~ - ~ 6' 4 ~ ~ ~ '~ 6 4938 ~ 0.25000'-~~~ 1235 -1.1E-03 ~-4.3E+02 ~-~~~~~ - - -~~~-- '~ ~ 4.. - ~ F ~-0.14 4938 'O.25000[ ' 1235 '-1.7EiO4 - 7. 0E +01 " ~ ---- ~~~~~' ~~~~ - - - ~ ~ ~ 6 4 8' -0.82'~ 4938 0.25000 '1235 '-1.0E-03 -4.1E+02 ~~ ~ ^ ~ " ~ ~ ~ - ' ~ ~ - ~ ' - -~ 6 4 9' -0.07 ~~ 4938 ' ' O.25000[E ~ 1235 -8.4E-05 '-3.4E+01 -~ ~ ' - ~~ ^^~~ '- ~ ' - - ~ ~ ~ ~ ~ ~ ~ - -~ ~ ~ - ~ 6 4 10-0.65 ~- '4938 .___4 0.25000{; --~1235 '~~0.25000 -- ~123548.0E-04 -3.3E+02 - - ~ ~ ~ - - ~ ~'-- ~ - - ~- ~- - ' .4 g ____.0.83 - ~ ~ - ~ ~ 4938 ~1.0E;03 4.1E+02 ' - - ~ ~ ~ ~ -0.28, ^ --~ ' ~ 0.25000t- ~1235 -3.5E;04'71:4E+02 ~ ~ ~ ~ 4 ___ 13 -' O.08L--~~~~d ~ 4938 D.25000f ~-- 1235' 4938 '9.6E-05"~3.9E+01 ~ ~ - - ~ - ~ ~ - ~ ~ - - - ~ ~ ~ - - ~ ~ T.1E;03{T.5E402 -'~-- ~ {- 4938 ---0;18[! _.~1 4938~ 0.25000; 123572.2E-04 -8.9E+01 ~ 0.25000"-- ^1235 0.89 -~~Q-~ 4938l~~ 'O.25000 ~ ~ ^ 1235 - ' - ~ - ~ - - - - - ~ g._- 9.6E-03 3.9E403 ~3.0E+03 ' 1.6E+02 1.3E-01 ~ ~~ 4 - ~4- - ^ 0. 07 f ~~~~ - ~ '~4938 0.16667 ~ ~823 7.0E-057.0E+00- ~~~~ ~ _7 .- 4 -~5 -2.27p 4938 ~ ~ 0.16667' 823 ~-2.2E-03 -9.3E+01 ~ ~ ~ ~ - ~f~ ~ ~ ~--" ~4 - ' 6" _ _ _' O.38 ~ ~ ~ - ~ ~4938I'O.16667 823i 3.6E-04 ' T.6E+01' ~ ~ ~ - - ~ ~ ~ ~ ~~ ~~ - - - '- - ~ ~ ~ ~ ~ ~ - - ~ ~4938f 0.16667 ~~4938l ~~ 0.16667[ - 823[ 4.9E;04 _ _ 7 __. 7 g t 823 ' 2.1E+01 ~ ~ ~ ~ ~ ~ ~~ -- ----- - ~~~ ~ .__. 7 _. 4_ ___ 8 ~-~ ~ 0. 74~ - - ' ~ ' ~ 7.1E;04 3:0E+01 ^~ ~ ~ ~ ~ - -" - - - ~ - ~~ - ~ ~ - - ' - - ' - - - ~ - ^ ~ ~ ' ~ ~ - - 7 4. --. ^ 1.51 - ~4938!^0.16667F~ 823 '1.4E-03 6.2E+01 ~ ~ ~ - ~ ' -~ ~ ~ ~ ~ ~ - - - 71 4 10 35.18 4938! 0.16667i 823 3.4E-02 1.4E+03 ~ ~' 7! 4 ' 11 ' O.02 * ~ 4938: 0.16667l ~823l 1.7E-05 ~7.4E-01 ' - ~ - - ~ - ~ ~ - ~ ~ - ~ ~ - ~ ~ 7' 4 12 0.26 4938! 0.16667j~ 823 2.SE-04' 1.1E+01 ~- 7 4 13 0.89 4938[ 0.16667 ' ' 823[ 8.5E-04' 823 '3.6E+01 ~~ ~ - ~ ~ - ~ ~ ~ - ~ - ' ~~ i 7 4' 14 ~5.91 4938. 0.16667[~ 5.7E-03 2.4E+02 1.8E+03-"7.5E+02 7 5' '~4 -~-1.36' ~ ~ ~ ' ~ ~ ' - ~ 4938L 0.16667i~ ~ --' 823 -1.1E;03'-3.2E+02 - - ' ' ~ ~ ~ ~ - - - - ' ~ ~ ~ '9.1E-01 ~ ~ ~ ~ ~ ' ~ ~ ~ ~ - - ~ ~ ~ ' - ~ ~ ~ ~ ~ ~- ~--~' ~-- ~- ~~ - - ~ - ' 4938I 0.16667 ^ 823~-9.5E-07 22.8E;01 -~~ ~ ~ ~ ~ ~ ' - - ' ' - ~ ~ ~ - - ~~ -- --- 7 5 5 - ' O.00; ~ 0.22[~ ~ '-~ 4938! 0.16667 {: ~ 823 3.6E-04' ~1.0E+02 ~~~ ~b - ' ' ~ - ' ~ ~ ~ ~ ~ ~ ~ ~- - 7i 5 6, ~ 0.44 ~823[: 7' 5' 7 ' 4938 0.16667i 1.8E-04~ 5.2E+01 ~' ~ ~~" ~ ~- - - - ~ ~~~~ - ~ ~ 7 5 -~8" - ~ 0. 74'" ~4938: ~0.16667i~ ~823i5.9E-04 1.7E+02 -- ~ ~ - ~- -^ - - ~ ~ 7 5 9 -0.51 '4938: 'O.166671' 823i-4.1E-04 21.2E+02 ^ ' - ~ ~ - - ' - - ~ ~ ~ - - ~ ~~ ~ ~ ~ - - - ' - - ~ ~ ' - - - ~ - - '-~ ~--- 7; 5 ' ~~ ~ ~ 10 ~~~-'O.09j~~ ~ 4938' O.16667F ' ~ 823l'7.2E-05 ' 2.1E+01 ~~~- '~ ~ - ~ ~ ~ ~- ~ ~ ~ -- ' ~ ~ ~ ~ ~- ~ -~ ~ ]~ 4938'4938I 0.16667l 823i 1.0E-02' 3.0E+03' ~ ~ ~ ' ~ --~~ 7i ~5 ~ - ~ 11 ~ 12.83r 7l ~5 ~' 12 ~ ' 63.07[ O.16667i~ 823F 5.1E-02' 1.5E+04' 1.8E+04 1.3E+03 1.6E+00 7; 6-4 - -31.09, 4938' '0.16667i 823?-2.5E-02 -6.9E+03 7; 6f Si -10.08 1 4938' O.16667i 823h8.0E-03 -2.2E+03 7; 6+! 6! 3.36i I 4938' O.16667; 823l-3.6E-04 -9.9E+01 l 823 2.7E-03 7.5E+02 t 7: 6 7! -0.45l I 4938' O.16667! i Page 12 of 15 2/3/97 - - - - - - - - - - - - - - ~

p n ND CALCULAllDN OF ACTIVIIY BY MEASWLMLNI ELLMENI .[ j ( ~ .BYTWSP~j~~ ~ ~I- ~ - - - ~ ~ ~ ~ ~ TRENCH TWSP DEPTN U-235 TR AREA [ TWSP ~ ' VOL ~ TOT U TOT U U UG5 U-235 ~ I ft2~{i' FRAC' ~ft3 Cl -~ ~ i - g ~- i - --' g - 'l-g ' AREA ~- BY TWSP ;BY 1WSP ~ ~ ~ - - - '- - - - ~ ~ ' ~ ~~ ~ ~ ~ ~ ~ ~ ~ ~ ~~ l' g/f t2 d ~~ ~ ~ ~~ - -- '~-~ 7' ~' - ~~ -)) ft pCI/g 1 7 6; 5; -6.Jy; evJ5 U. loc 6(; 543 ->.1 E-us - 1.4t+us ( 6 9 -8.70, 4938l 0.16667: 823;-6.9E-03 -1.9E+03 7; 6I 10' 39.17i 4938! 0.16667i' 8231 3.1E-02 8.7E+03-7I 6I 11 24.27' t 4938! 0.16667[ 823 1.9E-02' '5.4E+03 ~ ~ ' ~ - - - ' --'~~ 4~-~--~ ~ 7j '~ ~ 6! 12 16.84 4938I 0.16667* 823 1~3E-02 ~3.8E+03 ~ ~ ~ ~ ~ ' - ~ ~ - - ~~~ -~ -~~ 7 6i- '13'- ' O.64" 4938F 0.16667 823 5.1E;04' ~1.4E+02 7j' 6"~ 15' ~ 34.32' j 4938p0.16667 823lg-4.7E-03 4 7l 6" ~14' ~ -5.86 ^ ~-1;3E+03 '4938 ' O.16667 823i 2.7E-02 7.6E+03 1.2E+04 9.7E+02 '1.2E60' ~~ ~ 9: 4; 4 -0.65 2694 0.20000 539 -3.4E-04 ;6;7E+01 ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ 9' 4i ~5~~ 2.01 2694'~~0.20000'~ ~~ 539 1.0E-03~ 2.1E+02 ~~ ~ - ~ ' ~ ~ - ~ ~ ~ ' ~ ' - ~ - - ~ ~ ' ~'~ ~ ~-- ~ - - ~ ~ - I 6 5.04 2694 ~0.20000 539 2.6E-03' 5.2E+02 ~ ~~~ ~ 9 4 9 4' 7 4.55 0.20000 539 2.4E;03' ~4;7E+02 ~ ~ 2694; 2694[0.20000b~ 539I 3.0E-03 ~5.9E+02 '~~~ - -~ ~~' - ' ~ ~ ~~ ~- ~ ~ ~~ - ~' 9; 4 8 ~ 5.75 ~ 9' 4' '9 7.18' 2694 0.20000i~~~ 539 3.7E-03 ' 7.4E+02 - - - ~ ~ - - ~ ' ^ ~ ~ ~ ~ -~- - ~ ~ ~ ~ ' - ~ ' - - I I 4' 10 3.38 ' " 2694 ~ 0.20000 b 539 1;7E-03 3.5E+02 ~2.8E+03 3.1E+02 5.8E-01 ~ ~ - ' ' - - - ~ ' ~~ ~ ~ ~ - - - 9 9f 5 ~~ 4 -~~-1.30' ~ 0.20000~ ~~ 539 -6;7E-C4 ' -1;3E+02 ~~ -- - ~-~~~-- ~ ~ - - ~ - - ~ " 9~~ 5' - ~ 5p-~;0.23'- ~ ~ ' f ~' 2694'~ 0.20000f ~~ 539 2.6E;04 ~ ~ ~ 2694 539 -1.2E;04 ~ 2.4E+01 ~~ ~ - - - ~ - ~ - ~ - ~ - - - - - ~ ~ - ~ - 9 5t' ~~ 6 E 0.51 2694' 0.20000 ' 5;3E+01 - - - ~ ~ ~ _ _. 9 ~5 - ~ 7' O.44~~- ~ }~ 2694 H- ~ 0.20000 ~ 0.20000b - ~139 ~2.3E-04 ~4;6E+01' - ~ - - - - ~ - ~ ' - 9~~~5 ' ~- 8-0.78 ~ ~ 2694 539 4;1E-04 ~ 8:1E+01 - - - - - ~~ ~~- ~ ~ - - ~ - L-~ 9f -' 5 - 9 -0.41 ~ -~ 2694 0;20000t - ~~" 539 -2.~1E-04" -4 3E+01 ~- ~ ~ - - - - - - - ~ ~ - - ~ ~ ~ ~ ~ ' ~ - - 9 S 10 -0.77 2694 0.20000" 539 -4;0E-04 '7.9E+01 - ~ - ~ - ~ - ' ~~-~2. 5 E- 02 {--~'~--~ ~ - - ~ ' 9: 5 11' ~ -0.23~~ ~ 2694 ~ 0.20000 " ~ - 539 -1;2E-04'72.3E+01{ -1.2E+02 11~.4E+01 ~ - ' ~ f ~10! 9 ~- 4 -0;74 '13276 ' O.07692 --~~1021 -1.5E-03 '~-2.2E+03 - ~-~ ~ - ~ ~ ~ ~- ' - ~ - --- -- - ' ^ - - ~ ---~~ - 10f 9' 5 ~-1.25! 13276 0.07692 1021 '-2.5E-03 -3;7E+03 ~~~ ~~~~~ ~- - - ~ ~ ~ ~ ~ ~-'-- - ~ ' "---~~~ - ~~ 10f ~ 9~ ~ ~ K~ 70.55 ' " ' - ^'- 13276{~~ 0:0769{- 1021 9 6r 13276' O.0769 1021 ;6:0E~03 78;vE+03- ' - -~~- ~ -~~~~~-~~- - - - ~ - 10[ ~ '- 7h-- 2.97"'- ~ ~ 2 15.4E'-03 77.9E+03" - - ~ - - ' ~ ~ - ~ ~~ --~-- -~ 10 2.64 9 ~ 13276 0.07692 1021 21;1E;03 71;7E403 ~ ~ ~ ~ ' '~'~ 10f ~ ~~~ 9 9i- -- -0.58"-~~~- 13276' 0.07692-~ 1021 ;1:2E-03 -1:7E+03- - - - -~ - -~~' ~~' - - - ~ - ~ ~-- 10i 9 10F- -0.24~ ~ 13276'~0;07692--- 1021 4~9E-04 ;7.2E+02 - ~ ~ - ~ - - ~ " - - - ~ ~ - 10{' 9i - 11 ~~ -0.06" ~' ~ 13276'~0.07692 1021 21.3E;04 ;1:9E+02 ~ - ~ ~ -- - ~ ' - - - ~ ~ - - - - ~ ~ -~~ - ~ ~ ~ ~ - ~ ~- - - - - ' t o j ~~~ ~ 9[ ~ ~ ~ 12 ~~ ~0.39 ~ ~ ~ -~ ~13276~~~0.07692' 1021 ~7.9E-04 ~1;2E+03 - ~ ~ ~ - - -- ~' ~' ~ - - - ~ ~ 10( ~- ~ '4~ 71.24- -' ~ 13276{ 0.07692 10 9: ~ ~ 13 ~ ~-2.28~ ~ 13276 0.07697 1021 ~-4;6E;0376;8E+03 23.3E+04 72.4E+02 7 2.3E-01 '-- ~ p 1021 22;5E 0373.7E+03 ~ - - - - * - - - - - - -~ ~ - - ~ ~ 101 ' ~ ~ 10h ~ ~ ~' 5' -~ 73.72i-~ ~ ~ ~ 13276~ 0.07692 1021 ~7.6E-03 71.1E+04~--~ ~~~~ '~-- ~ ~- --~ - ' 10! 10: 6 ~ -0.68' ~13276 0.07692 1 021 -1.4E;03 72.0E+03 ~ ~ - ~ ~ ~ ~ - - ' ~ - - - ~ i 71.34f ~ -- '~ } ' 13276~ 0.07692 _. 10f~-~10[ ' 7i " 1021 22.7E-03 24.0E+03 - - ~ ~ ~ - - - ~ ~ ' -~~ - - - ~ ~ ~ 10f - 10 p ~~~~~ 8 - ~ 1.10, 13276[E 0.07692 t 13276 ~0.07692 1021 ~2.2E;03 3.3E403 ' - - - -~ ~~ -~ ~ ~ ~ ~ - ~ ~ ~ 10! ~~ 10( 9' - ~~ -0.53t ' - 1021 -1.1E-0371;6E403- - - - ~ ~ ~ ' - - - ' ~ ~ ~-- - ~ - 10: 10i

10. ~ ~ ' -3.55'

~ ~ 13276' ^ 0.07692-~ ~ 1021 47.2E;03 -1;1E+04 ~ ' ~ ~ ~ ~ ~ - ~ 11 ~ ~~-0.51 13276f~D.07692- ~~1021 -1;0E-03 21:5E+03 ~- - ~- ^ ' ~ - ' - '- ' ~~ - --- b ~ - - ~ - - 4 10 10' 10! 10! ~ ~ 12 {. ' O.58T I ~b 10: 10! ' 13!~ ~1.04i -- 13276; 0.07692'- -~1021 1.2E-03 ~ 1.7E+03i - ~ - ~ - ~ ~ ~ ~ ~ ' ~ ~ - - - ' - ~ ~ - ~ ---k l 13276!~ 0.07692 1021 ' 2.1E;03 ~~3.1E+03i 10l 10F ~14i' ~ 0.91[ ~ ' ~ 13276{ ~ 0.07692~~~~ 1021 " 1.9E-03 2.7E+03I-2.4E+04' ~- 1.'7E+02'~-1.7E-01 - ~ ~ ~ ~-- ~ - ~ 4'! 0.15f 13276f 0.07692[ 1021 3.1E-04 4.6E+02 10! 11 -1.93 13276; 0.07692i 1021 '-3.9E-03 15.8E+03 10' 11 5 10: 11 6! 2.03i 13276' O.07692; 1021 4.1E-03 6.1E+03' i - - - - ' ~ ' ~ ~ ' ' ~ ~ ~ ' - ~ ~ - ~ - - - - - ~ ~ - ~ - 13276! "0.07692[ ~ ~ 1021 '-3.7E-03 ;5.5E+03" 10! 11 7i -1.83! 10: 11. 8' -1.95f 13276' ~0.07692i 1021' ;4.0E-03 -5;8E+03 10-11! 9! -0.71[ f 13276 ~~ 0.07692*- ~~ 1021 -1.5E-03[F2.1E+03"~ ~ - - - I 10 11! 10! 0.92; [ 13276' O.07692 1021 ' 1;9E-03' 2.8E+03 10 11! 111 0.15! 13276! 0.07692 1021 3.0E-04 4.4E+02 13276' O.07692 1021 3.9E-03 5.7E+03 10: 10 12t 1.89' i Page 13 of 15 2/3/97

e G 4" W5F DAI A AND CALCULATION OF ACHVITY BY MEASURLMLMI ELLMLN1 e g l i TRENCH i TWSP DEPTH U-235 TR AREA TWSP VOL' TOT U TOT U U U-235-' ~U-235; ]-] ~~ i']I _ i { l AREA BY TWSP }BYTWSP I~g/ft2 I BY TWSP ft pCl/g i ft2 4, FRAC ft3 ~ Ci g i g ' o iu. 11 u - i.us. , uuo. u.utove i uz r -3. a-us i - >. w + us, ' ~- ~ b '~ 10' 11 14{ 0.96f 13276! 0.07692; 1021 -2.4E-03-3.5E+03l ~ ~ ~ ~ - ~ 1.9E-03 2.9E+03 10l 11 15 -1.16i 13276; 0.07692; 1021 ~ ~ 10: 11 161 0.08' 13276; 0.07692l 1021 1.5E-04" 2.3E+02 - t 13276 10l 11 17i 1.16 0.07692i 1021 ' 2.4E-03~'3.5E+03 ~~ ~ ~ ~ ~ * ~ - - ~ ~ ~ ~ ~ - ~ - - ~ ~ ~ ~ ~ j ~ ~ - ~~ ~ ~ ~ - ~ - - - 10' '-~ 11 ~ ~ -~ ~ 18 I ^ 1.44' ~13276E0.07692[ 1021 -2.9E-03 '- 4.~3 E+ 03 [- 1.1 E+04 '-7.6E+01 -'-7.4E-02 ~ ~ - ~ ~'- - ~ ~ ~~~ ~ ~ ~ - ' - ~ - - '10!~ ~12' ~ ~ ~ 4 7 1.40 ~~ 10! ~~ 12' ~ 5 -1.51 '~ 13276[0.07692 ~~ 1021 -3.1E-03 -4~.5E+03j ~ - ~~ ~ ~ - ' - - ' ~ ~' - ~ ~ ~ ~ ~ ~ ~ f ~ - ~ ~' -~ - ~ ~ ~ 1021 -2.8E-03 44.2E+03 '~ ' ~ ~ ~ ~ ~ ~~~ - ~ ~ ~ - ~ -- 4 13276 0.07692 10 - 12 ~' 6 ~ ~-0.62' ~ ~ ~ ~ ~ ~ 13276 '~ 0.07692 ~~~1021 -1.3E-03 71.9E+03 " ~ 0.07692[i1021 ~ 6.9E-04 10 - 12 ~ 7 -'0.34' ~ ~ ~ ~' 13276 '~1.0E+03 ~~' - - ~ ~~- ~~ ~ ~ ~~ ~~ 10l 12 ~ - - ' 8; -3.33 ~ 13276' 1 0.07692[ O.07692 1021 -6.8E-03 -1.0E+04 ~~ - j j ~1021 '-4.2E-03 -6.2E+03~~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ' ~ ~ ~ ~ ~' 'j~~ 10; 12 9 -2.08 ~ 13276 10: 12 ~ ~ 10 ' O.30 ~ 13276 0.07692i 1021 6^.0E-04 8.9E+02' - ~~' - ~ ~ ~ ~ ~ ~- ~ 10? ~12' 11 O.08' ~ 13276 0.07692F 1021 ' 1.6E-04 2.3E+02 ~ ^~ ~~ ' ~ ~ ~ ~~~ ~ - - 10! 12 12 ' 0.71 13276 0.07692*~ 1021 -1.4E;03 -2.1E+03 ~ ~ ' - ~ ~ - - 10! 12 13'~ 'O.46 13276- 0.07692 ' ~ 1021 ~9.4E-04' ~1.4E+03 - ~ ' - - - - ~ - ~ - - -'--~~ ~~~ -- ~ ~ ~ ~ ~ ' ~ ~ ~ ~ ~ ~ - 10I ~ 12'~- ~ 14 ' -- - 1.2 4 ' ~ - - ' 13276'~~0.07692 '~' 1021 '2.5E;03 33;7E+03[ ~ ~'~ ~ ' - - ~ ' ~ - - - ~ ~ - - ~' ~ ~ ~ - _10{[:__]12 ] ))17]-1;60E50 C _ _ ~ 13276L ]O.07692{f_ _1021' 10 12 - - ~ 15 ~~ ~0.53' ~ ~ ~ ~ - ~13276 0.07692 1021 1;1E-03 1.6E+03 - - - ~ - ~- -~ ~ ~ - - - -- ~ ~ - - ~ ~ ~ - 10 16 -3.1E-03 ;;4~.5 E+03 7-~ --- ~ -_~_ ]_] __ -~ ~ ~~-]~~ ~ 1327M 0.07692 1021 -3.2E-03 ;4.8E+03 ]-] 12g ~18;!-~ -0.99 -~ ~ ~13276f-~0.07692 - 1021 ~- 5 ~.1 E - 03 4 7.5E+03 ~ ~ ~ ~ ~ ~ ~ ~ - ~ ~ ~~ - - - ~ - ~ ~ ~ ~ -- - - - ~ 10!' 12 ~ 42.50 10! ~ 12 19 13276I~0.07692- '1021 -2.0E-03 ~3.0E+03 ' - - ~ ~~ ~ -~ ~~ - - ~ ~ ~ " ~- ~ - - ~ - - - ~ 10' 12' 20' -0.32 132767 0.07692 1021 -6.5E-04 -9.6E+02 ~ ~ ~ - - ~ ' ~ - ~ - ^ ~ ~ ~ ' - ~ ~ ~ - ' + ~ 10: 12 21j -1.32 13276! 0.07692i 1021 -2.7E-03 -4.0E+03 -5.2E+04 -3.8E+02 -3.7E-01 ~' ~'~ ' - ~ - I 4' -1.45 13276! 0.07692! 1021 '-2.9E-03'-4 3E+03 ~ ~ tot 13 10 13 5! 0.32 13276! 0.07692' 1021 ~6.4E-04 9.5E+02 ~ ~ ' ^ - ' ' ~ ~ ' - ~ -~ ~ - - - - ~ ~ 10 13 ' 6{ -1.57f~_ 13276! 0.07692 ' 1021 -3.2E-03 -4.7E+03 _ ~ ~ ~ . ff' ~~ -- _ _ ~-)) fI ~~ ~~ ~ ~ ~ - ~ - - - - - -2.80 13276L 0.07692 _ 1021 -5.7E-03 -8.4E+03 } ~~- 10 13 7; ' 2.14' -

  • '13276i 0.07692 ~' 1021 -4.4E-03 -6.4E+03 4

10 ~ 13' 8: [~ - ~ ~ ~ ~~ ~ ~~ --~ --- 10! 13 9' 2.85 ~ 13276t 0.07692 ~'--~ 1021 25.8E;03 18.5E+03 ~ ~ - ~ - ~ - ~ - '~ ~ 10: 13 10! -1.02 13276i 0.07692 ~' 1021 -2.1E-03 -3.1E+03 ~ ~ ~~ 10: 13 11' -0.70* 13276 " 0.07692 '1021 -1.4E-03 -2.1E+03 ~ - - - ~ ~ 10! 13t 12 -1.90 ' ~13276 0.07692- ~ 1021 -3.9E-03 -5.7E+03' ~ ~ I 10! 13! 13! 0.00' ~ 13276" 0.07692J '1021 -7.2E-06';1'1E+01 ~~ - ~~~~'~T~~~~ ' 10l 13l' 15; 0.08 13276i 0.07692i 1021 1.7E-04 14! ~-2.73~~ 13276I 0.07692i 1021 -5.5E-03 78.2E+03 ~ ~ ~ - --' ~ ~ ~~ 10' 13 2.5E+02 ~~~ 43.4E+03[~~~~ ~ ~ -~ 10' 13 167 -1.13' ' ~ ' ~13276f 0.07692l - 1021 -2.3E-03 10' 13 17j ~13276! 0.07692I 1021 -1.8E-03 -2.7E+03 -0.89[' 13276l 0.07692j-1021 -5.3E-03 -7.8E+03 ~ ~ ~ ~ - -~ 10! 13 18 -2.61 10l 13 19l -0.70 13276' O.07692i 1021 -1.4E-03'-2.1E+03 -[- 10 13i 20 -1.451 13276' O.07692' 1021 -3.0E-03 -4.4E+03 10l 13! 21{! 0.43' i 13276.f 0.07692: 1021 8.7E;04'~ 1.3E+03 -6.9E+04[ -5.0E+02 14.9E-01 ' ~ ~ ~~ ~- .~~ ~ --- -

8.0E+04 1.7E+04

~ -_[__' ~- ~_~_.~4 _ _ ~ _ _ _ ~~ ~ - ' .1 j p + y 7 i l l-j ) t l 4 8 [ t i 4 1 l Page 14 of 15 2/3/97

A e 9 L> I f I i i l -~ ~ TOTAL U ACTIVITY, PORTIONS OF TRENCHES REPRESENTED BY 4" TWSPS, Ci 7.6E-01 i - ~- ~~~'- ~~ - - - - ' - TOTAL U ACTIVITY, PORTIONS OF TRENCH 10 REPRESENTED BY 4" TWSPS, Ci -1.3E-01 ' 'l ~ ' ~ T TAL U S$, T10NS O ENCHE REPRESEN ED BY 4 TWSPS, g -8.0E+04 ~ ' - - - ~ - - - - ~ -~~ ~ ~-~~ h -~--- ' ~ - ~ ~ ~ TOTAL U MASS, PORTION $ OF TRENCH'10 REPRESENTED BY 4" TWSPS, g F1.9E+05. ' - ~ - ' ' _ ' ^ - -) 2" TWSP AND 4" TWSP DATA'CO.M8tNED: . j _ g... _ _ _.- TRENCH VOLUME CHECK (SUM OF ALL ELEMENT VOLUMES),'ft3 568149 -~ ~_ _f g _]- } _ )) - - - ~ ))~ )) p p p TOTAL'u dCTIVITY, Cl, 2" TWSP DATA ~+~4" TWSA DATA-' ^ ~ ~ - - - ~ ~ ~4.0E+00 ~3.8E+00 ~~- - ~ ~ ~ - ~ ~ ~ ~ ~ - - ~ ~ ~ ' ~-- ~~~ ' ~ - ~ ' - ' - - ~ - - - - ~ TOTAL U ACTIVITY IN TRENCH 10, Ci, 2" TWSP DATA + 4" TWSP DATA 5.1EiO1 5.1E-01 ~~' .~ ' - ~ - - 4 TOTAL U MASS, g, 2" TWSP DATA + 4" TWSP DATA ~ 6.6E+05 ' 6.4E+05 ___]_ )) ~ ))))] 1.5E+06 1.4E+06 ~~' - - ~ ~ ~ ^ ~-'- ~ TOTAL U MASS IN TRENCH 10, g, 2" TWSP DATA + 4" TWSP DATA _ ._.,,,s.%. ... -...m_._ -w.-.-w...+. e v --+----..a +_ws-,i.ee-e . i. - _ _ _ - _ _, ---.i_.-.- -_-- - - ~ _ -~ _ --- _ - - - -- - - - - U ACTIVltY AND MASS BY' TRENCH '-~ '~ ~~ ~ ~ ~ ~ ' ~ } ~~ ][ _.. Z_.. .Z h l.l..__ _ Z i.~ ZZ ZZ E i ~ ,,,,c 7,c,,,,,, __.. _ _ r NuMBr _ _ 7-- f g p t p g, q g._ p g.+ q 3 g +3.1; 3 ;mp ;4pg p++ p1_7++.. 0.300 ' 'O.094f ~~- 0.335 ~-- 0.394 '7.0E+04' 8.6E+04~ 1;8E+04 '- 8.8E+04' '1.0E+05 .~ 0.241 2' ~ - - - 0.886 ~-- 0.737 ~~0.249 ~ ~ 1;135 ~-~0~987 2.0E405 1.8E+05 7 :1E404 34 ' ~ 0.018f - 0.018' ~ - - ~ - - ~' 0.018~ ~ U.018' 2.6E+04 2;6E+04 - -~~- 72E+05' ~~2;0E+05 ~- - 2.6E404 ~ 2.6E+04 - - ~ ~ - -^ - ~ - - - ~ 4! ~ ~0.146 0.187' ' ~ ~ ~ ~ - - - 0;146" ~ 0.187 4;5E+04 4.9E+04~ 4~.5E+04 T.9E404' I SI ~ ~ ~ -".. - ~ ~~ -~ -~- 0.182'~~~0.206~ 0.375 0.557 0.581 ~8:5E+04 T.1E405 ~~3.2E+04'- '1.2E+05 I;4E405 __ p _. 0.862 --~ 0;644 ~~ 0.007 0.~ 869--~0.651 2.0E405 ~ 1;3E405 3.0E+03 ~2.1005 ~ ~1:3E405 - ~ - - - - ~~-' y. .. ~ 0.173 ~ 0.257 0.147' ~~'~ ~ 0.319 ' 0;404 ~2.9E+04 3'.7E+04 3.2E+04' 6;1E404 6;9E+04 8 ~ ~ - ~ ~ ~ -~~0.040 ~~0.040 "-- -~- ^- 0.040 -~~0.040' ~2 9E404 2.9E404 1 -~2.9E+04 ~~2.9E+04 ' ~ - __9 0.039 - 0.023' 0.013 ~~ 0.052 0.037 --~ 1;3E+04~ 7.4E+03 2 7E403

  • 1~.5E+04 1;0E+04

- - - ~ ~ - -' - - - 10 m - - ~~~ 0.635 0;6347 0.128" -- ~ 0.507E 0.506'~ ~ ~ ~ '8.5E+05~ 8'3E+05 71.9E405 6;6E405 6~.4E+05 - ~ - - __. 3.2207 3.046 0.758 ' 3.978[E 3.804 ~~ 1.6E+06 1.5E+06 78.0E+04' ~1.5E+06T' 1 4E+06' ~ ~ - ~ ' ~ ' [. l.._. _ Page 15 of 15 2/3/97

O O O I SLDA Source Term Calculation l from TWSP Gamma Log Data i i I i Part 4: Summary of Uranium Activity and Mass Calculation January 23,1997 i Prepared By: t Thomas E. Potter Radiation Protection Consultant i 4231 Jenifer Street, N.W. [ Washington, D.C. 20015-1959 l t Supplement to Report Number 92-043.226

O O O SLDA Source Term Calculation From TWSP Gamma Log Data - Summary of Uranium Activity and Mass Calculations TWSPGAMB.XLS--SLDA SOURCE TERM CALC FROM TWSP GAMMA LOG DATA-5 SHEETS l ~ ~~ ~ ~ ~ SHEET 4-

SUMMARY

RESULTS OF CALCULATIONS OF TOTAL U ACTIVITY AND MASS INVENTORY ' ~ METHOD OGY: ~ _[ _] ASSIGN TRENCH AREAS TO EACH TWSP BASED ON TOTAL TRENCH AREA FROM SCR AND NUMBER OF TWSPS IN TRENCH. ASSIGN 1 FT THICKNESS TO EACH TWSP MEASUREMENT h* DE5P BASED ON MEASURNMENTINTERVAL((] [ ~_[] ~ ~ CALCULATE VOLUME OF ELEMENT FOR EACH MEASUREMENT AS PRODUCT OF AREA AND THICKNESS FROM ABOVE. ASSidN U-235' CONC 5NTRATION BASED ON MEASUREMENT dF F'RACTIUN OF ~ ~ ~~ ASUfGN ENRiC'HM NT TO EACH'2"-TWSP BAS'$~D ON LU CHATE ISU UPIC ANAL sis RESULTS; SSEMU'NATiiPAL l l ~ ASSIGN TOTAL _U Td U-235 ACTIVITY RATIO AS FLINCTION OF ENRlCHMENT BASED ON 10CFR2d I ORMULA. _ [ ~ ~ NOTE: RATIO OF TOT U TO U-235 ACTIVITY IS INSENSITIVE TO ENRICHMENT IN RANGE ABOVE ABOUT 2% ENRICHED. f CAL'CU' LATE iOTAL'U} CUNC5NYRATION 'B S5D'ON li2352:6NCENTR TION AND TiiT O TO U-235 ACTUifY~Fi TIO]_ f ~ CALCULATE TOTAL U INVENTORY FOR MEASUREMENT ELEMENT VOLUME AS PRODUCT OF TOTAL U CONC, VOLUME, AND S ii.DENSIT, ASSUMEO~ O'BE~1'.6 G[CCI[ [_ []_][_ { [][~_[1]__ SUM ACTIVITY OR MASS BY ELEMENT TO GET TOTAL U ACTIVITY OR MASS INVENTORY IN ALL. TRENCHES. f ..) [ __b.__..l. .- _.. l CASE 1 ASSUME ALL 2" MEASUREMENTS BELOW LLD ARE 0. 2" TWSP U-235 MDA AND FRACTION OF MDA ASSUMED FOR MEASUREMENTS (MDA, USER INPUT: __. _3.5{U-235 MDA, pCi/g _ i 0: Fraction of MDA t _l _ _ _._ L. U ACTIVITY AND MASS By it4ENCH_ _ _ _. TRENCH l ~ ~ U ACTIVITY ~~~^ ~ ~ ~ ~ ~ ~ ~ 'U MASS ~ ~ ~ ~ ~ ~ ~ ~ l I2" 1993' ~ 2" T995 -~4" ~2" 93Ti 2" 95T4" ~ _._.i_. C C[C((]{]Ci))~ [Ci[ ' ~ ~ ~ ~ ~ ~ ~~2" 1993~ 2" I995C ^ 4" 2" 93 + 4" 2* 95 + 4" ~[ [ 'g~ ~ ~ ~~ ~ (( g __ _ _ _g _ 'g-] I ~ T8E-01 33E-01I 1 1.9E-01 TSE-01" ~ 9.4E-02 ~ ~ NE+04 6.9EiO4 ~I 8EA 4 - l2Ei64 T8i7siO4 2 5 7 2 8.6E-01 7.1 E-01 2.5E-01 1.1 E+00 9.6E-01 2.0E+05 1.7E+05 2.1 E+04 2.2E+05 1.9E+05 3 ' O.0E+00 0.0E+00 0.0E+00 0.0E+00' O.0E+00 0.0E+00' ~ ~~ DE+00 '~0.0E+00 0. 4 9.5 E-02 1.4E-01 9 5E-02' 1.4E-01' 9.4E+03 1.4 E+04 9.4E+03 1.4 E+04 I 5 1.5E-011_ 1.8E-01 3'.8E-01 5.3E-01 5.6E-01 6.8E+04 9.1 E+04 3.2E+04 1.0E+05 i1.2E+05 f 6. 7.9E-01 5.6E-01.. __ 1.3E+05 . 4.8E+04 3.0E+03 1.3E+05 5.1E+04 1 7.9E-01 5.6E-01 7.5E-03 7 1.3E-01 2.2E-01 1.5E-01 2.8E-01 3.7E-01 2.2E+04 3.0E+04 ~ 3.2E+04 5.4E+04 6.2E+04 8 O.DE+00I 0.0E+001 ~ '0E+00 ~ 0.0E+00 O.0E+00 ' O.0E+00 ~~ ^ D.'0E+00'~0. E+00 [ O. 9 2.1 E-02' '0.0E+00! 1.3E-02 3.4E-02 '1.3E-02' ~' 7.2E+03! 0.bE+00 2.7E+d3 ~9.9E+63 ' 2.7E+d3 ~ 10 2.8E-01 ' 2.8E-01! -1.3E-01 1.6E-01 1.6E-01 ~ 3.8E+05! 3.6E+05 -1.9E+05" 1.9E+05 ' [7E+05 f ~ 7.6E-01 i 3.3E+00' 3.1 E+00 8.7E+05_ 7.8E+05 ' 8.0E+04 7.9E+05 7.0E+05 SUM 2.5E+00 i 2.3E+001 Page 1 of 2 2/3/97 l

G O O u SLDA Source Term Calculation From TWSP Gamma Log Data - Summary of Uranium Activity and Mass Calculations ._l .} . I I i [ i CASE 2 ASSUME ALL 2" MEASUREMENTS BELOW LLD ARE 0.5*LLD i 2" TWSP U-235 MDA AND FRACTION OF MDA ASSUMED FOR MEASUREMENTS <MDA, USER IfjPUT: { 3.5lU-235 MDA, pCi/g l 0.5[ Fraction of MDA . L. _l U ACTIVITY AND MASS BY TRENCH TRENCH U ACTIVITY _g_________ U MASS --2"1993 ~ ~2"1995 ~~4" ' 2" 93 + 4" 2" 95 + 4""

  • ~2" 1993 ' ~ 2" I995 ~

~ 4" 2" 95 +^4".2" 9s ~+ 4" ~ ~ ~ ~ ~ ~ 1 2.4 E-01 3.0E-01 9.4E-02 3.4E-01 3.9E-01 ~ 7.0E+04} ~ 8.6E+04 ~~ i.~8 E+04' ~ 8.8E+04 ~1.'0 E+05 ~ ~ _ ]2 (( 8.9E-01 _ 1.8E-02 1.8E-02 1.8E-02 2.6E+04 _.2.6E+04 2.6E+04 2.6E+04 7]E-01 [ 2.5E-01' } 1.1E+00[]9.9E-O'1 [- ((~~~ 2.0E+05' i~8E+0s [' 2.1 E+04 ]2.2E+05 ~ ~~l0E+05 2 3 1.8E-02 4 1.5E-01 1.9E-01 1.5E-01 1.9E-01 4.5E+04 4.9E+04 4.5E+04 4.9E+04 5' ' ~I 1.8E-01 [2.1E-01 _ 7.5E-03 _. 8.7E-01. 6.5E-01 _[ {8.5E+04 1.1 E+05 3.2EiO4 [1.2E+05. 1MEy0s ~ 3.8E-01 5.6E-01 5.8E-01 ' 6 8.6E-01 6.4 E-01 2.0E+05 1.3E+05 3.0E+03 2.1 E+05 1.3E+05 ._I_ _d _ 4.0E-02 1.7E-01 2.6E-01 1.5E-01 3.2E-01 4.0E-01 2.9E+04 3.7E+04 3.2E+04 6.1 E+04 6.9E+04 8 4.0E-02 4.0E-02 4.0E-02 2.9E+04 2.9E+04 2.9E+04 2.9E+04 9 3.9E-02( 2.3E-02 1.3E-02 5.2E4)2 3.7E-02 1.3E+04 7.4E+03 2.7E+03 1.5E+04 1.0E+04 10 6.3E-01 6.3E-01 -1.3E-01 5.1E-01 5.1 E-01 8.5E+05 8.3E+05 -1.9E+05 6.6E+05 6.4E+05 h1[.[3]2EiOO[3.0E}+h]7.6E41]4.0E{00 li.8Ei00 [_l))_{6p06][5E+0'6 _ -8.0Ey04 1.55i06]1XEIO6 SU ~ ~~ ~ l GENERAL CONCLUSIONS _ _{_._ U ACTIVITY INVENTORY IS IN THE RANGE OF 3 TO 4 CURIES. U MASS INVENTORY IS IN THE RANGE OF 0.7 TO 1.5 METRIC TONS. IdASS'AND ACTIVITY DISTRIBOTIONS ARE' HETEROGENEOUS ~ ~ ~ - ~ ~- ' ~ ' ~ ~ ~~T~- ~ ~ Page 2 of 2 2/3/97

4 !!O i SLDA Source Term Calculation 4 from TWSP Gamma Log Data i Part 5: U-235 Mass by TWSP and by Trench i j January 23,1997 i 1 i i O i ) i 4 Prepared By: 1 Thomas E. Potter l Radiation Protection Consultant 4231 Jenifer Street, N.W. Washington, D.C. 20015-1959 1 1 !O f Supp Ament to Report Number 92-043.226 i l

SLDA Source Term Calcul tion From TWSP Gimma Log D:ts - U-235 Mass by TWSP and by Trench TWSPGAMB.XLS-SLDA SOURCE TERM CALC FROM 1WSP GAMMA LOG DATA-5 SHEETS SHE5T 5 - U-235 MASS BY TWSP AND BY TRENCH I l w i I i i 2" TWSP DATA l l Assumed U-235 concentration for results < MDA: I 3.5lU-235 MDA, pCi/g TRENCH! TWSPi 1993! 1995i 0.5; Fraction of MDA l i G U-235! G U-2351 1 i il il 281l 281! l l + l 11 2! 1329. 2051 I 1i 3! 400j ?B1 i i i j il 4! 333' 628; il Si 820; 841l 1: 61 2006: 2426: 2' it 2045' 2331: l 2~ 2i 2356: 2784; i l 2: 3l 10247; 6447l i l 2; 4

4249, 4083!

i 3-1; 88: 88 3: 2: 103 103: j 4 ij

444, 444F 4

2 2425: 3288' 5 1i 2510: 2389; 5 2;

194, 288:

5. 3! 878: 1261; 6' 1l

15020, 11764l l

~6 2,

1272, 547; l

6 3; 8541 593 i 7-il 18121

3582, 7

2: 427; 365 7' 3: 1476i 1565: i ~ ~ 8 il 359 359; i 8 2i

383, 383; t

9 1 323! 159 i 9 2 346! 179-9 3!

159, 159 10 1l 1496i
2150, i

10 2! 512t 453' I 10 3; 491; 491: I 1 ~ 4: 528: 528 10 5 2569. 2070 ~ 10 6:

604, 604l 10 71 642l 642'

~ 10 8l

679, 679

~ s i \\ O I Page 1 of 2 2/3/97

_. ~. SLDA Source Term Calcul tion From TWSP Gimm2 Log D ta - U-235 Mars by TWSP cnd by Tr:nch 4" TWSP (1995) { l l l TRENCH WISP l G U-235l l l l 1; 7i 2027. I j i s il al 34! il 91 23: I j il 10l -30! i j 1! iii -4i i l l ii 12; 20' i I 21 Si 1093. i i l 2! 6! 47! i 2! 71 4131: I Si 4j 2648 5 Si 4954: i 3 i 6 4l 157 I t 1 i 7 4; 751 l 4 7-Si 1313-i i ~ 7 6! 974 i i 9. 4I 310 ] 9 Si -14 i i 10 9. -235 j 10 10; -171 1 4 10 11; -76 l j i 10 12; -375-1 10 13i 4 99 i i l' VRENCH 93 2" + 95 4" I 95 2" + 95 4" l G U-235; PERCENT t G U-235;PERCENTi 1 7300i 9.40% 8581l 11.56 % 20803! 28.02 2 24054! 30.96 % i 3 191] 0.25 % i 191l 0.26W 4 2868' 3.69 5 ) 37311 5.03 % 5 11183i 14.40 % i 115411 15.54%j 6 17302: 22.27 130611 17.59 % 7 6752l 8.69% 8549; 11.51 % 8 742: 0.96 % 742; 1.00%l 9 1124i 1.45%; i 794l 1.07 % 10 6165~ 7.94 % l

6260, 8.43 %

TOTAL 77683: 100.00 % i 74252l 100.00 % i I i } i i i Assumed U-235 concentration for 2"'IWSP results < MDA: l l 35~U-235 MDA, pCi/g i i i 0.5 Fraction of MDA ~ i O Page 2 of 2 2/3/97

l !o l Appendix F1 l Supplement to Appendix F of Appendix A, Rev. O of the 1995 Field Work Report Revaluation of 1993 2" TWSP Gamma Log Spectra: Peak Integrals Only l l i January 23,1997 Prepared By: MJW Corporation Inc. i 338 IIarris 11111 Road, Suite 208 l Williamsville,NY 14221

O I

Supplement to Report Number 92-043.226

=-. Appendix F1. Reeviluati:n of 1993 2" TWSP Spectra Rework of 1993 2"'1V/SP Spectra for Peak Integrals Only - January 1997 (Criticality Study Support) Count Count "*'EY Channel Centroid FWHM Depth (ft) Time (Sec) Counts Counts (kev) Description TWSP01-1 1 300 168 206 481 91 185.1 37.3 None TWSP01-1 2 300 168-206 515 47 185.3 37.4 None TWSP01-1 3 300 168-206 550 0 185.8 35.8 None TWSP01 1 4 300 168-206 1003 0 185.1 38.9 None TWSP01-1 5 600 168-206 1011 0 185.1 41.6 None TWSP01-1 6 600 168-206 985 0 185.7 25.2 None 1 TWSP01-1 7 600 168 206 1101 9 185.2 23.6 None TWSP01-1 8 600 168-206 1171 0 185.5 30.26 None TWSP01-1 9 600 168-206 1166 0 185.8 41.4 None TWSP01-1 10 600 168-206 1301 0 185.7 50.9 None TWSP01-1 11 600 168-206 1417 52 185.1 39.1 None TWSP01-2 1 300 168-206 672 0 185.2 39.9 None TWSP01-2 2 300 168-206 705 42 185.2 37.5 None TWSP01-2 3 300 168-206 637 0 185.2 34.7 None TWSP01-2 4 300 168-206 729 0 185.8 24.1 None j TWSP01-2 5 600 168-206 2263 0 184.9 35.3 None l TWSP01-2 6 600 168-206 9313 1747 185 32.5 Real TWSP01-2 7 600 168-206 2569 307 185.5 34.4 ouestionanie TWSP01-2 8 600 168-206 2107 235 185.6 40.6 ouestionsdie TWSP01-2 9 600 168-206 1893 60 185.2 45.9 None 4 TWSP01-2 10 600 168-206 1822 67 185.8 39.8 None TWSP013 1 300 168-206 474 0 185.7 32.6 None TWSP01-3 2 300 168-206 523 0 185.4 38.6 None TWSP01-3 3 300 168-206 520 0 184.7 38.1 None ] TWSP01-3 4 300 168-206 531 0 185 32.9 None } TWSP01-3 5 600 168-206 1033 136 185.4 32.7 None J TWSP01-3 6 600 168-206 976 0 185.6 35.9 None TWSP01-3 7 600 168-206 1027 0 184.5 22.2 None TWSP01-3 8 600 168-206 928 0 184.8 37.6 None TWSP01-3 9 600 168-206 927 0 185.6 38.2 None TWSP01-3 10 600 168-206 1522 79 185.2 21.5 None TWSP01-3 11 600 168-206 1398 345 186.1 36.4 None TWSP01-4 1 300 168-206 655 70 185.8 37.9 None TWSP01-4 2 300 168-206 779 38 185.3 36.7 None TWSP01-4 3 300 168-206 736 0 185 34 None TWSP01-4 4 300 168-206 1457 14 185.4 38.1 None TWSP01-4 5 600 168-206 2715 0 185.4 41.3 None TWSP01-4 6 600 168-206 4536 129 185.3 42.7 None TWSP01-4 7 600 168-206 2115 165 185.6 35.6 None TWSP01-4 8 600 168-206 1714 0 185.4 45 None TWSP01-4 9 600 168-206 1699 0 185.3 31.76 None TWSP01-4 10 600 168-206 2037 0 185.3 42.11 None MJW Corporation Inc. Page 1 of 12 January 22,1997

Appendix F1, Reevaluation of 1993 2" TW2P Spectra {. Count Count Gross Net Energy

      • k g

g M Depth (ft) Time (Sec) Counts Counts (kev) Description TWSP01-4 11 600 168-206 2671 0 185.9 33.3 None TWSP015 1 300 168-206 769 0 185.3 36.8 None l TWSP01 2 300 168-206 1448 0 185.2 36.6 None i TWSP015 3 300 168-206 2137 0 185.2 35.3 None l TWSP01-5 4 300 168-206 693 30 184.8 37.2 None TWSP01-5 5 600 168-206 617 0 185.8 39.7 None i TWSP015 6 600 168-2 % 1244 0 185.6 34.5 None TWSP01-5 7 600 168-206 3477 318 185.3 31.7 None l TWSP01-5 8 600 168-206 4447 847 182.7 41.3 Real TWSP01-5 9 600 168-206 2132 143 185.6 26.7 None TWSP01-6 1 300 168-206 628 4 185.7 35.8 None TWSP01-6 2 300 168-206 1235 26 185.8 36.9 None f TWSP01-6 3 300 168-206 673 49 185.8 37.6 None TWSP01-6 4 300 168-206 562 0 186.1 37.7 None i TWSP016 5 600 168-206 1297 88 185.3 39.7 None TWSP01-6 6 600 168-206 2200 250 185.5 46.2 None TWSP01-6 7 600 180-206 5626 894 191.2 35.5 Real(27) TWSP01-6 8 600 173-206 7811 1623 188.6 30.6 Real TWSP01-6 9 600 168-206 4223 440 186.1 44.4 Real TWSP01-6 10 600 172-206 3633 518 188.6 37.4 Real TWSP021 1 300 168-206 548 80 185.8 37.9 None TWSP02-1 2 300 168-206 580 0 185.3 36.7 None TWSP02-1 3 300 168-206 580 0 185 34 None TWSP02-1 4 300 168-206 538 31 185.4 38.1 None TWSP02-1 5 600 147-172 3817 645 185.4 41.3 Real IWSP02-1 6 600 154-182 5581 1231 185.3 42.7 Real TWSP02-1 7 600 150-172 4151 0 185.6 35.6 ountenate TWSP02-1 8 600 150-180 5413 484 185.4 45 None TWSP02-1 9 600 150-180 1484 27 185.3 31.76 None TWSP02-1 10 600 150-180 1632 20 185.3 42.11 None TWSP02-1 11 600 150-180 1656 168 185.9 33.3

None, TWSP02-1 12 600 154-189l 3298 568 185.9 33.3 V. Real TWSP02-2 1

300 168-206 756 0 184.9 34.9 None TWSP02 2 2 600 168-206 1606 0 185.1 33.9 Nene TWSP02-2 3 300 168-206 1123 109 184.9 34 None TWSP02-2 4 300 168-206 2020 0 185 30.2 None TWSP02-2 5 300 168-206 3091 322 185.1 38.7 None TWSP02-2 6 600 163-206 4404 356 182.4 39.4 ouestonabie TWSP02-2 7 600 168-206 6003 1050 185.4 35.4 None TWSP02-2 8 600 168-206 3858 231 185.3 30.7 None TWSP02-2 9 1200 168-2 % 9141 366 185.4 35.8 None TWSP02-2 10 600 176-2 % 5670 388 185.9 52.2 Real TWSP02-2 11 600 n/a no data n/a n/a n/a MJW Corporation Inc. Page 2 of 12 January 22,1997 w

. ~... i Appendix F1. Reevaluation of 1993 2" TWSP Spectra 1 Count Count Gross Net ner8y g g Centroid FWHM p Depth (f1) Time (Sec) Counts Counts (kev) Description TWSP02-2 12 600 168-206 8624 824 185.7 36.6 Real I TWSP02-2 13 600 177-206 6961 387 186.2 91.8 Real l 1 TWSP02-3 1 300 153-186 739 .59 167.9 22.36 None TWSP02 3 2 300 153-186 764 84 168.2 27.2 None IWSP02-3 3 300 153-186 1410 322 166.9 30.05 None TWSP02 3 4 300 153-186 646 0 168.1 30.1 None l TWSP02-3 5 600 153-186 1446 120 168.4 33.6 None i TWSP02 3 6 600 152-184 2866 523 165.4 38.9 None I TWSP02-3 7 600 146-178 3325 388 160.6 57.1 None TWSP02-3 8 600 152-186 3309 685 165.4 23.8 Real i TWSP02-3 9 600 149-181 5769 1050 163.4 28.4 Real f TWSP02-3 10 600 148-188 33372 10658 165.1 23.9 V. Real l TWSP02-3 11 600 157-!88 2710 416 169.6 18.24 Real I TWSP02-3 12 600 148-186 4187 599 164.6 27.6 Real TWSP02-3 13 600 148-186 4469 920 164.2 32.3 Real [ TWSP02-3 14 600 151-193 6100 1499 168.2 12.2 Real TWSP02-4 1 300 168-206 110 0 185.5 33.4 None l-TWSP02-4 2 300 168-206 805 0 185.9 35.6 None i TWSP02-4 3 300 168-2 % 771 0 185.7 36 None TWSP02-4 4 300 168-206 781 0 185.1 37.8 None TWSP02-4 5 600 168-206 2064 153 185.4 41.7 None TWSP02-4 6 600 163-210 10379 1595 184.2 147.2 Real TWSP02-4 7 600 170-200 5584 441 180.99 43.8 Real 4 TWSP02-4 8 600 170-200 12851 2001 184.9 21.1 V. Real TWSP02-4 9 600 168-206 7784 1505 185.5 35 Real 4 TWSP02-4 10 600 173-206 4289 964 187.94 59.32 Real TWSP02-4 11 600 168-206 4269 0 184.99 56.5 None l TWSP02-4 12 600 168-206 2993 68 185.6 49.6 ouenonatde l IWSP02-4 13 n/a n/a no data n/a n/a n/a n/a TWSP02-4 14 600 168 206 2918 71 186.4 55 None l TWSP03-1 1 52-66 493 0 57.9 16.3 None TWSP03-1 2 52-66 511 0 $8.1 16.3 None l-TWSP03-1 3 52-66 503 8 58.2 14.9 None l TWSP03-1 4 52-66 462 12 58.1 11.4 None 6 1 26 0 .9 on TWSP031 7 66 1625 0 58.2 -20.5 None j j TWSP03-1 8 52-66 3073 0 58.2 16.1 None TWSP03-1 9 52-66 3406 0 58.2 -20.4 None L TWSP03 2 1 52 66 810 0 58.1 7.5 None j' TWSP03 2 2 52-66 784 4 58.1 20.6 None i TWSP03-2 3 52-66 877 0 58.2 18.8 None TWSP03-2 4 52-66 776 0 58.3 -22.6 None MJW Corporation Inc. Page 3 of 12 January 22,1997 ~ p 1

Appendix F1. Reev..iuation of 1993 2" TWSP Spectra Count Count "* W Channel Centroid FWHM Depth n ) Time (Sec) Counts Counts (kev) Description O. TWSP03-2 5 52-66 2903 0 58.2 12.3 None TWSP03-2 6 52-66 2765 0 58.1 -16.5 None TWSP03-2 7 52-66 2933 0 58.2 0.7 None TWSP03-2 8 52-66 9435 1005 57.6 -71.2 Real TWSP03-2 9 52-66 17342 2702 57.7 -0.1 Real TWSP03-2 10 52-66 4667 0 58.2 -3.3 None a ~ TWSP04-1 1 168-206 5168 56 116.8 117.1 None TWSPO4-1 2 168-206 648 0 185.2 46.3 None TWSP04-1 3 168-206 675 0 184.9 38.7 None DVSP04-1 4 168-206 504 0 185.3 39.1 None TWSP04-1 5 168-206 2129 0 185.4 36.8 None TWSP04-1 6 168-206 2505 0 185.53 34.75 None TWSPO4-1 7 168-206 2709 135 185.6 41.5 None TWSP04-1 8 168-206 2603 0 185.7 37.9 None TWSP04-1 9 168-206 2174 0 185.5 8.07 None TWSP04-1 10 168-206 2755 0 184.2 -0.3 None TWSPO4-1 il 168-206 3863 0 183.3 4.5 None DVSPO4-1 12 168-206 3019 0 185.16 50.91 None i TWSPO4-1 13 168-206 3053 0 185.4 34.09 None TWSP04-1 14 168-206 3068 0 185.4 31.8 None TWSP04-2 1 55-71 2215 0 87.7 13 None O TWSP04-2 2 55-71 667 0 62.4 14.7 None TWSP04-2 3 55-71 551 7 61.92 21 None TWSP04-2 4 55-71 708 0 61.88 10.4 None TWSPO4-2 5 55-71 3147 0 62.04 16.3 None TWSPO4-2 6 53-71 3428 0 62.01 158.4 None TWSP04-2 7 55-71 3534 0 62.2 4.1 None i DVSP04-2 8 55-71 4197 0 62 13.7 None TWSPO4-2 9 55-71 6622 0 61.8 14.3 None TWSPO4-2 10 55-71 6333 0 61.5 -7.55 None TWSP04-2 11 55-71 6160 482 61.5 -6.77 None TWSP04-2 12 55-71 16436 2751 61.46 -3.4 None TWSP04-2 13 55-71 17501 3085 61.6 35.7 None TWSPO4-2 14 55-71 5591 66 62.2 -5.8 None TWSP04-2 15 55-71 5462 55 62.14 -15.3 None TWSP04-2 16 n/a no data n/a n/a n/a n/a TWSP04-2A 1 55-71 916 0 62 -11.9 None TWSPO4-2A 2 55-71 667 0 62.4 14.7 None TWSP04-2A 3 55-71 55! 7 61.9 2; None DVSP04-2A 4 55-71 708 0 61.9 10.4 None TWSP04-2A 5 55-71 3147 0 62.04 16.3 None TWSP04 2A 6 55-71 3428 0 62.01 158.4 None TWSPO4-2A 7 55-71 3534 0 62.2 4.1 None TWSP04-2A 8 55-71 4197 0 62.03 13.7 None MJW Corporation Inc. Page 4 of 12 January 22,1997 l l I

( Appenfix F1. Reevrluation of 1993 2" TWSP Spectra 1 Count Count Gross Net gg Centroid FWHM Depth (ft) Time (Sec) Counts Counts (kev) DesenPtion O' \\ TWSP04-2A 9 55-71 6622 0 61.8 14.3 None TWSP04-2A 10 55-71 6333 0 61.5 -7.6 None TWSP04-2A 11 55-71 6160 482 61.5 -6.8 None l TWSPO4-2A 12 55-71 16436 2751 61.5 -3.4 Real TWSP04-2A 13 55-71 17501 3085 61.64 37.7 Real TWSPO4-2A 14 55-71 5591 66 62.2 -5.8 None TWSP04-2A 15 55-71 5462 56 62.14 -15.27 None TWSPO4-2AL 16 n/a no data n/a n/a n/a n/a TWSP05-1 1 43-58 588 0 49.67 11.2 ouestenable 'TWSP05-1 2 43-58 623 0 49.47 19.9 None DVSP05-1 3 43-58 879 0 49.5 17.2 None TWSP05-1 4 43-58 892 0 49.5 12.98 None TWSP05-1 5 43-58 3650 0 49.4 11.7 None TWSP05-1 6 43-58 3284 0 49.5 11.4 None TWSP05-1 7 43-58 3560 0 49.5 29.4 None MVSP05-1 8 43-58 3490 0 49.5 16.3 None TWSP05-1 9 43-58 4603 0 48.71 3.07 None TWSP05-1 10 43-58 25223 0 47.4 -53.5 oueshonable TWSP05-1 11 44-57 20043 1898 48.45 0.7 ouestenable TWSP05-1 12 46-55 26867 4979 49.2 68.9 ouestenabw i TWSP05-1 13 42-56 43683 6243 47.5 4.4 ouesconadie t TWSP05-2 1 43-58 851 3 49.4 10.9 None TWSP05-2 2 43-58 1076 0 49.6 59.1 None TWSP95-2 3 43-58 no data n/a n/a n/a n/a TpSP05-2 4 43-58 793 0 49.7 13.7 None TWSP05-2 5 43-58 3186 0 49.7 11.7 None I TWSP05-2 6 43-58 4142 0 49.5 24.7 None TWSP05-2 7 43-58 4142 0 49.6 24.7 None TWSP05-2 8 43-58 4418 0 49.8 9.6 None TWSP05-2 9 43-58 4737 0 49.8 12.9 None TWSP05-2 10 43-58 4408 0 49.7 -3.5 None TWSP05-2 11 43-58 4534 0 49.7 -176.26 None TWSP05-3 1 43-58 909 0 48.8 7.5 None TWSP05-3 2 43-58 618 0 49.9 14.3 None TWSP05-3 3 43-58 679 7 49.7 13.4 n/a TWSP05-3 4 43-58 833 0 49.5 13.3 None TWSP05-3 5 43-58 3296 0 49.4 15.6 None TWSP05-3 6 43-58 3061 0 49.6 8.7 None l TWSP05-3 7 43-58 6598 0 49.2 3 None TWSP05-3 8 43-58 3886 0 48.9 41.6 None TWSP05-3 9 44-56 13152 542 48.7 5.1 Real j TWSP05-3 10 43-58 29172 2612 49 -85.2 Real j TWSP05-3 11 43-58 21596 812 49.3 -6.5 ouestonabie TWSP05-3 12 43-58 5297 0 49.4 42 None l i MJW Corporation Inc. Page 5 of 12 January 22,1997 i

-.. ~ - Appendix F1. Reev;luation of 1993 2" TWSP Spectra 4 Count Count Gross Net "*#U g Centroid FWHM Depth (ft) Time (Sec) Counts Counts (kev) Description TWSP05-3 13 43-58 no data n/a n/a n/a n/a TWSP06-1 1 43 58 1081 0 49.5 15.7 None TWSP06-1 2 43-58 2195 0 49.6 5.4 None DVSP06-1 3 43-58 1025 33 49.5 53.2 None I TWSP06-1 4 43-58 927 0 49.8 8 None TWSP06-1 5 43-58 3339 0 49.3 -136.4 None TWSP06-1 6 43-58 3083 0 49.3 4.6 None TWSP06-1 7 43-58 3618 0 48.6 1.66 None TWSP06-1 8 43-54 87737 26765 47.2 38.4 Real TWSP06-1 9 43-53 12519 2410 47.2 2.1 Real TWSP06-1 10 42-56 19262 5447 47.7 -47.7 Real TWSP06-1 11 44-58 11510 2006 47.8 6.5 Real TWSP06-1 12 44-56 6018 870 49 6.4 Rea! TWSP06-1 13 44-55 18967 6617 48.4 0.18 V.Rea! TWSP06-2 1 50-64 793 0 56.4 8 None TWSP06-2 2 50-64 764 0 56.1 11.9 None TWSP06-2 3 50-64 737 0 56.4 20.4 None TWSP06-2 4 50-64 790 0 56.3 10.9 None TWSP06-2 5 50-64 2971 0 56.4 9.8 None l TWSP06-2 6 50-64 3371 0 56.3 27.1 None TWSP06-2 7 50-64 3268 0 56.3 9.4 None TWSP06-2 8 50-64 3542 0 56.4 11 None TWSP06-2 9 50-64 3476 0 56.3 -2.5 None 4 d TWSP06-2 10 50-64 3282 0 56.3 12.1 None i TWSP06-2 11 50-64 6662 0 56.2 14.8 None TWSP06-2 12 50-64 12000 2145 56.2 10.1 Real TWSP06-2 13 50-64 4061 0 56.3 46 None TWSP06-2 14 50-64 4256 281 56.2 15 None TWSP06-2 15 50-64 4178 158 56.5 9.1 None 3 TWSP06-3 1 45-55 700 0 49.4 0.9 None TWSP06-3 2 45-55 736 0 49.6 20.3 None TWSP06-3 3 45-55 719 0 49.5 13.7 None TWSP06-3 4 45-55 707 0 49.2 19.8 None TWSP06-3 5 45-55 3174 0 49.4 20 None TWSP06-3 6 45-55 2972 0 49.7 14.9 None TWSP06-3 7 45-55 3173 0 49.5 58.5 None TWSP06-3 8 45-55 2935 0 49.5 14.6 None TWSP06-3 9 45-55 2618 0 49.6 9.3 None TWSP06-3 10 45-55 2056 0 49.6 7.9 None TWSP06-3 11 45-55 1903 0 49.7 33.4 None TWSP06-3 12 45-55 1982 0 49.6 17.4 None TWSP06-3 13 45-55 2332 99 49.3 23.7 None TWSP05-3 14 45-55 2189 44 49.4 -15.4 None TWSP06-3 15 45-55 5422 527 49.3 152.67 None MJW Corporation Inc. Page 6 of 12 January 22,1997

i Appendix F1. Reev luation of 1993 2" TWSP Spectra Count Count Gross Net "*'EI 4 g CW Centroid FWHM Depth (ft) Time (Sec) Counts Counts (kev) Description DVSP06-3 16 45-55 5512 518 49.3 -5.2 None TWSP07-1 1 44-56 833 0 49.3 15.9 None TWSP07-1 2 45-55 1027 65 49.5 14.1 None TWSP07-1 3 45-55 1060 0 49.3 1.8 None TWSP071 4 45-55 833 0 49.5 -5.9 None 4 TWSP07-1 5 45-55 3015 0 49.3 25.5 None TWSP07-1 6 45-55 2724 0 49.3 4.4 None TWSP07-1 7 43-56 8598 44 47.4 -15.4 Real TWSP07-1 8 43-56 6602 8 47.8 12.8 Real TWSP07 1 9 44-56 20548 3232 45.7 2.5 Real TWSP07-1 10 43-56 9691 2971 48.4 15.1 V. Real TWSP07-1 11 43-56 4346 230 48.5 22.7 ouestambie TWSP07-1 12 43-56 4176 0 48.7 3.7 None TWSP07-1 13 43-56 4828 0 48.8 -215.8 None TWSP07-1 14 43-56 6230 798 48.7 23.6 Real TWSP07 2 1 52-63 550 0 56.9 2.12 None TWSP07-2 2 52-63 557 0 57.1 16.7 None TWSP07-2 3 52-63 1071 0 63.1 28.8 None TWSP07-2 4 52-63 566 14 56.9 11.9 None TWSP07-2 5 52-63 2456 80 57 6.5 None TWSP07-2 6 52-63 2280 0 57 12.2 None TWSP07 2 7 52-63 2351 35 56.99 112.96 None TWSP07-2 8 52-63 2193 0 57.1 6.1 None TWSP07-2 9 52-63 2274 30 57 25.9 None TWSP07-2 10 S2-63 2957 185 56.9 2.8 None TWSP07 2 11 52-63 4380 408 56.8 0.5 Real TWSP07-2 12 52-63 3166 82 57 6.9 None TWSP07-2 13 52-63 3184 0 57 3.4 None TWSP07-2 14 52-63 3768 128 57.9 29.9 None TWSP07-2 15 52-63 9910 10 57.1 4.9 None TWSP07-3 1 42-56 1100 0 47.9 10.95 None TWSP07-3 2 42-56 1016 0 48.3 11.7 None TWSP07-3 3 42-56 1102 0 48.3 9.7 None TWSP07-3 4 42-56 1072 0 48.1 8.8 None TWSP07-3 5 42-56 5345 0 47.8 -18.7 None TWSP07-3 6 42-56 11298 1203 47.3 6.4 Real TWSP07-3 7 42-56 6384 519 47.6 3.1 Real TWSP07-3 8 42-56 4317 0 48.1 14.7 None TWSP07-3 9 42-56 4193 0 48.1 8.3 None { TWSP07-3 10 42-56 4656 0 47.8 9.4 None TWSP07-3 11 42-56 7158 738 47.6 -1.1 Real TWSP07-3 12 42-56 8459 1694 47.6 22.4 Real TWSP07-3 13 42-56 7283 1208 47.8 21.2 Real h TWSP07-3 14 42-56 4597 0 48.2 10.3 None J MJW Corporation Inc. Page 7 of 12 January 22,1997

Appendix F1. Reev;luati n of 1993 2" TWSP Spectra Count Count Pee Channel Centroid FWHM Depth (ft) Time (Sec) Counts Counts (kev) Description TWSP07-3 15 42-56 4043 0 48.1 -21.7 None TWSP07-3 16 42-56 4973 83 48.1 41.7 None TWSP08-1 1 42-56 1095 0 48.3 11.9 None TWSP08-1 2 42-56 1150 0 47.99 19 None TWSP08-1 3 42-56 1219 0 48.2 -41 None DVSP08-1 4 42-56 1225 0 48.05 0.5 None TWSP08-1 5 42-56 4260 0 48.2 23.3 None TWSP08-1 6 42-56 3939 0 48.2 8.6 None TWSP08-1 7 42-56 3553 0 48.1 -15.2 None TWSP08-1 8 42-56 3717 0 48.2 29.5 None TWSP08-1 9 42-56 3380 0 48.1 8.8 None TWSP08-1 10 42-56 3768 0 48.1 41.5 None TWSP08-1 11 42-56 4216 0 48.2 6.1 None TWSP08-1 12 42-56 4047 0 48.1 0.82 None TWSP08-1 13 42-56 4824 0 48.2 4.9 None TWSP08-1 14 42-56 4703 0 48.2 9.6 None TWSP08-1 15 42-56 4499 0 48.1 19.3 None TWSP08-1 16 42-56 5568 0 48.2 10.7 None TWSP08-1 17 42-56 4527 0 48.2 8.6 None TWSP08-1 18 42-56 4428 0 48.15 81.5 None TWSP-08-2 1 42-56 1062 0 48.3 20.7 None TWSP-08-2 2 42-56 985 0 48.5 27.8 None TWSP-08-2 3 42-56 1024 0 48.1 10.5 None TWSP-08-2 4 42-56 1000 0 48.4 24.7 None TWSP-08-2 5 42-56 4795 0 48.4 24.2 None TWSP-08-2 6 42-56 4540 0 48.3 11.6 None TWSP-08-2 7 42-56 4632 0 48.4 13.5 None TWSP-08-2 8 42-56 4123 0 48.2 21.7 None TWSP-08-2 9 42-56 4533 0 48.3 0.65 None TWSP-08-2 10 42-56 4923 0 48.3 -75.98 None TWSP-08-2 11 42-56 5763 0 48.4 11.4 None TWSP-08-2 12 42-56 6226 0 48.3 19.9 None TWSP-08-2 13 42-56 6447 0 48.3 -45.6 None TWSP-08-2 14 42-56 6267 0 48.3 -3.26 None TWSP-08-2 15 42-56 6402 0 48.4 288.5 None TWSP-08-2 16 42-56 6507 0 48.3 19.1 Nona TWSP-08-2 17 42-56 6188 173 48.3 6 None TWSP-08 2 18 42-56 6395 0 48.2 34.8 None TWSP-08-2 19 42-56 5569 19 48.4 99.6 None TWSP-09-1 1 42-56 1069 0 48.3 9.9 None TWSP-09-1 2 42-56 1158 0 48.3 8.44 None TWSP-09-1 3 42-56 1129 0 48.2 18.2 None TWSP-09-1 4 42-56 941 0 48.2 28.93 None O TWSP-09-1 5 42-56 3923 0 48.1 10.5 None G MJW Corporation Inc. Page 8 of 12 January 22,1997

Appendix F1. Reev;luation of 1993 2" TWSP Spectra i Count Count Gross Net

  • 87
    • k g

Cer.tmid FWHM Depth (ft) Time (Sec) Counts Counts (kev) Descripdon TWSP-09-1 6 42-56 6254 389 47.7 5.1 Real TWSP-09-1 7 42-56 6196 196 47.9 -58.1 Real i TWSP-09-1 8 42-56 5941 181 47.9 3.06 Real TWSP-09-1 9 42-56 8734 829 47.7 26.2 Real TWSP-09-1 10 42-56 6794 299 47.9 3.5 Real TWSP-09-1 11 42-56 5262 0 48.3 9.4 None i e ^ TWSP-09-2 1 42-56 1385 20 48.2 -11.5 None 1 TWSP-09-2 2 42-56 1277 0 48.1 11.2 None TWSP-09-2 3 42-56 1351 46 48.2 17.6 None TWSP-09-2 4 42-56 1158 0 48.2 12.95 None 4 TWSP-09-2 5 42-56 4131 0 48.3 21.8 None ] DVSP-09-2 6 42-56 7997 437 53.3 314.8 ouestonabw TWSP-09-2 7 42-56 3541 25 60.6 6.4 ouestonabe l l TWSP-09-2 8 42-56 7227 475 57.97 -14.4 ouestonabw TWSP-09-2 9 42-56 7054 638 58.15 -2.3 ouestonabie TWSP-09-2 10 42-56 4890 0 58.7 -163.9 None TWSP-09-2 11 42-56 4665 0 58.8 33 None TWSP-09-2 12 42-56 4265 0 58.8 38 None TWSP-09-3 1 42-56 1099 0 48.5 13.3 None TWSP-09-3 2 42-56 1078 0 48.1 10.8 None TWSP-09-3 3 42-56 1036 0 48.2 7.8 None TWSP-09-3 4 42-56 1003 0 47.8 -2.6 None TWSP-09-3 5 42-56 4081 0 48.1 11.6 None TWSP-09-3 6 42-56 4186 0 48.1 6.6 None i TWSP-09-3 7 42-56 5635 190 47.9 6.66 ouestonabie TWSP-09-3 8 42-56 6580 115 47.9 4.2 ouestionable i TWSP-09-3 9 42-56 11065 0 54.7 6.4 None i TWSP-09-3 10 42-56 3705 0 48.2 6.1 None TWSP-09-3 11 42-56 3003 3 48.1 8.3 None TWSP-10-1 1 41-57 1008 0 48.2 9.5 None j TWSP-10-1 2 41-57 1116 0 47.7 22.8 None TWSP-10-1 3 41-57 812 30 47.8 0.54 None i TWSP-10-1 4 41-57 686 0 47.9 7.1 None TWSP-10-1 5 41-57 4212 0 47.9 25.5 None TWSP-10-1 6 41 57 4755 0 47.96 -49.8 None TWSP-10-1 7 41-57 4746 0 47.6 -3.1 None TWSP-10-1 8 41-57 15787 1745 46.93 73.7 Real TWSP-10-1 9 41-57 14399 2278 47.3 2.94 Real TWSP-10-1 10 41-57 4945 0 47.9 223.5 None TWSP-10-1 11 41-57 4675 0 47.98 22.5 None TWSP-10-1 12 41-57 4182 0 47.98 -16.5 None DVSP-10-1 13 41 57 3909 0 48 14.1 None O TWSP-10-1 14 41-57 4505 0 47.9 -9.4 None i MJW Corporation Inc. Page 9 of 12 January 22,1997 t

Appendix F1. Reevrluation of 1993 2" TWSP Spectra Count Count Channel Centroid FWHM Depth (ft) Time (Sec) Counts Counts (kev) Description -O' - TWSP-10-1 15 41-57 4600 0 48 -16.1 None TWSP-10-2 1 41-57 1488 43 48 18.4 None TWSP-10-2 2 41-57 1299 0 47.9 20.1 None TWSP-10-2 3 41-57 1159 0 48.3 21.5 None IWSP-10-2 4 41-57 1027 0 48 -27 None TWSP-10-2 5 41-57 3519 0 47.98 -4.6 None TWSP-10-2 6 41-57 4900 0 47.99 25.8 None j TWSP-10-2 7 41-57 6206 0 48.1 11 None TWSP-10-2 8 41-57 6236 0 48.1 13.2 None TWSP-10-2 9 41-57 6276 0 48.2 -4.3 None TWSP-10-2 10 56-64 3499 349 59.6 -15 ouestenable IWSP-10-2 11 56-64 2505 84 59.7 -23.6 None TWSP-10-2 12 56-64 2353 0 59.8 4.9 None TWSP-10-2 13 56-64 2206 0 59.7 -8.I None TWSP-10-2 14 56-64 2062 0 59.7 1.95 None TWSP-10-2 15 56-64 1591 16 59.7 19.3 None TWSP 10-3 1 41-57 954 0 48.14 53.9 None TWSP-10-3 2 41-57 588 0 47.9 9.8 None TWSP-10-3 3 41-57 597 0 47.6 13.2 None TWSP 10-3 4 41-57 712 0 48.6 22.4 Nore TWSP-10-3 5 41-57 2661 0 48 13.2 None TWSP-10-3 6 41-57 3580 0 48 10.7 None TWSP-10-3 7 41-57 4480 0 47.9 5.4 None TWSP-10-3 8 41-57 4511 0 47.8 18.96 None ' TWSP-10-3 9 41-57 4458 0 47.9 3 None TWSP-10-3 10 41-57 4417 0 47.98 6.4 None TWSP-10-3 11 41-57 4606 0 47.9 -15.6 None TWSP-10-3 12 41-57 4508 0 47.9 75.2 None TWSP-10-3 13 41-57 4656 0 47.9 9.9 None TWSP-10-3 14 41-57 4374 0 47.97 2.23 None TWSP-10-3 15 41-57 4768 0 48 213.1 None TWSP-10-3 16 41-57 4692 0 47.95 21.4 None TWSP-10-4 1 41-57 1339 0 48 22.2 None TWSP-10-4 2 41-57 1299 0 48.2 10.2 None TWSP-10 4 3 41-57 1305 13 48 20.15 None TWSP-10-4 4 41-57 1287 29 48.1 18.5 None TWSP-10-4 5 41-57 5207 0 47.99 -4.06 None TWSP-10-4 6 41-57 5922 0 47.9 -57.7 None TWSP-10-4 7 41-57 5965 0 48.2 1.3 None TWSP-10-4 8 41-57 5862 14 48.1 13.7 None TWSP-10-4 9 41-57 5790 0 48.7 130.2 None TWSP-10-4 10 41 57 5541 0 48.1 1.9 None TWSP-10-4 11 41-57 5572 0 48.1 -23.4 None MJW Corporation Inc. Page 10 of 12 January 22,1997

-.... ~ - .. - -... _ ~ - - _. l Appendix F1. Reev;luation of 1993 2" TWSP Spectra 5 Location Channel Centroid FWHM Depth (ft) Time (Sec) Counts Counts (kev) Description TWSP-10-4 12 41-57 5556 0 48.13 11.7 None TWSP-10-4 13 41 57 5766 0 48 136 None TWSP-10-4 14 41-57 5519 0 48.11 9.2 None TWSP-10-4 15 41-57 5757 0 48.1 -6.9 None TWSP-10-4 16 41-57 5680 0 48.1 34.4 None TWSP-10-4 17 41-57 6323 4 48.1 30.2 None TWSP-10-5 1 41-57 854 0 47.98 9.8 None TWSP-10-5 2 41 57 977 8 47.8 5.6 None l TWSP-10-5 3 41-57 695 0 47.97 18.8 None i TWSP-10-5 4 41-57 624 0 48.3 17.8 None ) l TWSP-10-5 5 41-57 3295 0 47.9 19.2 None TWSP-10-5 6 41-57 3863 0 48.1 -134.1 None TWSP-10-5 7 41-57 3664 0 47.96 16.7 None i TWSP-10-5 8 41 57 3434 0 47.9 30.5 None TWSP-10-5 9 41-57 4167 0 47.9 6.98 None TWSP-10-5 10 41-57 3596 0 48.1 8.8 None TWSP-10-5 11 41-57 5737 0 47.2 -30.9 Real TWSP-10-5 12 43-54 32053 6613 47.6 -0.3 Real TWSP-10-5 13 43-54 7640 860 47.5 63 Real TWSP-10-5 14 43-54 3921 81 47.9 3.1 Real l TWSP 10-5 15 43-54 4118 146 47.99 40.3 Real TWSP-10-5 16 43-54 3315 0 47.95 14.9 None TWSP-10-5 17 43-54 3258 0 48.1 -60.3 None TWSP-10-5 18 43 54 4008 144 47.97 113.5 Real TWSP-10-6 1 43-54 924 0 47.96 9.1 None TWSP-10-6 2 43-54 927 0 48.1 7.4 None TWSP-10-6 3 43-54 745 0 47.9 9.5 None IWSP-10-6 4 43-54 736 16 48.1 9.1 None TWSP-10-6 5 43-54 4316 0 47.5 222.2 None TWSP-10-6 6 43-54 4608 0 48 35.2 None TWSP-10-6 7 43-54 4326 0 48.1 -42.7 None TWSP-10-6 8 43 54 3868 0 47.97 19.4 None TWSP-10-6 9 43-54 3763 55 48 23.5 None TWSP-10-6 10 43-54 3519 0 48 19.4 None TWSP-10-6 11 43 54 3682 0 48 25.01 None TWSP-10-6 12 43-54 3760 0 48.1 -2.12 None TWSP-10-6 13 43-54 3667 0 48.1 50.9 None TWSP-10-6 14 43-54 3725 0 47.99 -193.2 None TWSP-10-6 15 43-54 3607 0 48.1 0.2 None TWSP-10-6 16 43-54 3676 0 48.1 12.8 None TWSP-10-6 17 43-54 3621 0 47.99 192.7 None TWSP-10-6 18 43-54 3608 0 47.99 0.85 None TWSP-10-6 19 43-54 3151 0 48.1 11.8 None O MJW Corporation Inc. Page 11 of 12 January 22,1997

Appendix F1. Reev luatirn of 1993 2" TWSP Spectra Count Count Gr ss Net d Centroid FWHM Depth (ft) Time (Sec) Counts Counts (kev) Description OA TWSP-10-7 1 43-54 606 0 48.05 11.6 None TWSP-10-7 2 43-54 583 0 47.9 10.1 None TWSP-10-7 3 43-54 655 0 48 9.1 None TWSP-10-7 4 43-54 692 0 48 6.8 None TWSP-10-7 5 43-54 2912 0 48.1 8.9 None TWSP-10-7 6 43-54 3195 0 48.1 11.4 None TWSP-10-7 7 43-54 3406 0 47.97 0.9 None TWSP-10-7 8 43-54 3263 0 48.06 14.6 None TWSP-10-7 9 43-54 2884 0 47.9 -149.2 None TWSP-10-7 10 43-54 2339 0 47.95 19.2 None TWSP-10-7 11 43-54 2482 0 48.1 8.3 None TWSP-10-7 12 43-54 3048 0 47.9 -1.77 None i TWSP-10-7 13 43-54 3509 0 47.9 13.6 None TWSP-10-7 14 43-54 3183 0 48.1 -2.1 None TWSP-10-7 15 43-54 2979 0 47.9 8.6 None TWSP-10-7 16 43-54 5666 0 47.99 0.9 None TWSP 10-7 17 43-54 3069 0 48 7.5 None TWSP-10-7 18 43-54 2650 0 47.96 45.4 None TWSP-10-7 19 43-54 2768 0 47.99 5.8 None TWSP-10-7 20 43-54 2987 0 48.1 13.5 None TWSP-10-8 1 43-54 761 0 47.9 9.2 None l TWSP-10-8 2 43-54 806 14 48.2 16.2 None TWSP-10-8 3 43-54 815 0 47.9 15.4 None TWSP-10-8 4 43-54 980 0 47.9 16.5 None DVSP-10-8 5 43-54 3234 0 48.1 -30.5 None DVSP-10-8 6 43-54 2180 20 48.1 32.1 None TWSP-10-8 7 43-54 1066 34 48.3 -8.1 None TWSP-10-8 8 43-54 4086 0 48 5.2 None TWSP-10-8 9 43-54 4612 0 47.98 22.7 None DVSP-10-8 10 43-54 4313 0 48 -39.7 None TWSP 10-8 11 43-54 4386 0 47.96 16.2 None DVSP-10-8 12 43-54 4316 0 48.05 4.4 None TWSP-10-8 13 43-54 4318 0 48.1 2.8 None TWSP-10-8 14 43-54 4270 0 48.1 16.2 None TWSP-10-8 15 43-54 4058 0 48.1 -199.2 None TWSP-10-8 16 43-54 4323 0 48 9.9 None TWSP-10-8 17 43-54 4316 0 48.1 31.7 None TWSP-10-8 18 43-54 4236 0 48 -44.75 None DVSP-10-8 19 43-54 4582 22 48.05 32.7 None TWSP-10-8 20 43-54 4367 0 48 27.6 None TWSP-10-8 21 43-54 4321 0 48 16.3 None C] / MJW Corporation Inc. Page 12 of 12 January 22,1997

i i i O I Appendix G1 i } Supplement to Appendix G of Appendix A, Rev. O of the l 1995 Field Work Report i Revaluation of 1995 2" TWSP Gamma Log Spectra: Peak Integrals Only i O t d i i l January 23,1997 l Prepared By: MJW Corporation Inc. 338 Ilarris 11i11 Road, Suite 208 Williamsville,NY I4221 i O 1 i Supplement to Report Number 92-043.226 i

} Appendix G1. Reev luation of 1995 2" TWSP Spectra Rework of 1995 2" TWSP Spectra for Peak Integrals Only - January 1997 (Criticality Study Support) Count Location me Channel Net Counts Centroid FWIIM C D ption TWSP01-1 0 168-206 579 0 185.4 39.2 None TWSP01-1 1 168-206 634 0 185.3 37.9 None TWSP01-1 2 168-206 651 66 185.3 39 None TWSP01-1 3 168 206 581 0 185.5 35.1 None TWSP01 1 4 168-206 2417 116 185.2 36.8 None TWSP01 1 5 168-206 2409 0 185.1 35.6 None TWSP01-1 6 168-206 2487 69 185 78.9 None TWSP01-1 7 168-206 2707 211 185.6 36.7 None TWSP01-1 8 168-206 2659 7 185.1 26 None IWSP01-1 9 168-206 3057 132 185.5 43 None IWSP01-1 10 168-206 3078 0 185.4 37.1 None j TWSP01-1 10A 168-206 3004 0 185 34.8 None TWSP-01 2 0 168-206 614 0 185.6 34.9 None TWSP-01-2 1 168-206 606 0 185.2 41.1 None TWSP-01-2 2 168-206 621 75 185.4 36.4 None a TWSP-01-2 3 168-206 655 31 185.4 35.8 None TWSP-01-2 4 168 206 2973 0 185 31.9 None TWSP-01-2 5 168-206 19167 5322 184.3 28.9 None TWSP-01-2 6 1200 168-206 5870 1073 184.4 40.5 Real TWSP-01-2 7 1200 168-206 4266 639 184.8 44 Real i TWSP-01-2 8 1200 168-206 4814 524 185 41.7 Real TWSP-01-2 9 168-206 3636 204 185.2 32.9 None TWSP-01-2 10 168-206 3572 23 185.5 36.4 None TWSP-01-3 0 168-206 679 55 186.1 36.9 None TWSP-01-3 1 168 206 649 0 185.4 34.4 None TWSP-01-3 2 168-206 639 185.1 37.3 None TWS P-01-3 3 168-206 601 0 186.2 37.7 None TWSP-01-3 4 168-206 2518 100 185.3 30.5 None TWSP-01-3 5 168-206 2471 0 185.5 56 None TWSP-01 3 6 168-206 2519 0 185.2 82.4 None TWSP-01-3 7 168-206 2365 0 185.4 41.8 None TWSP-01-3 8 168-206 2252 29 185.5 43.2 None TWSP-01-3 9 168-205 3188 0 185.7 41.4 None TWSP-01-3 10 168-206 3803 20 185.4 36.9 None 1WSP-01-3 10A 168-206 3599 50 185.4 74.2 None i TWSP-01-4 0 168-206 614 0 185.6 42.0 None IWSP-01-4 1 168-206 704 0 186.2 37.4 None TWSP-01-4 2 168-206 618 33 184.9 28.3 None TWSP-01-4 3 168-206 582 0 185.4 38.1 None TWSP-01-4 4 168-206 2350 0 lb5.1 36.6 None TWSP-01-4 5 168 106 2925 390 184.1 40.3 None 3 1 MJW Corporation Inc. Page 1 of 5 January 22,1997

Appendix G1. Reev luati:n of 1995 2" TWSP Spectra o[nption f FWill\\1 p Location e Channel Net Counts Centroid V (Sec) TWSP-01-4 6 1200 168-206 4733 989 184.7 28.5 Real TWSP-01-4 7 168-206 3194 0 185.5 34.5 None TWSP-01-4 8 168-206 3966 0 185.4 43.3 None TWSP-01-4 9 1200 168-206 5067 426 185.8 35.1 Real TWSP-01-5 0 168-206 275 0 184.3 23.8 None TWSP-01-5 1 168-206 563 0 185.2 36.8 None nVSP-01-5 2 168-206 726 63 185.2 34.6 None TWSP-01-5 3 168-206 643 0 184.9 35.8 None TWSP-01-5 4 168-206 2478 60 185.6 36.9 None j TWSP-01-5 5 168-206 2235 0 185 32.8 None TWSP-01-5 6 168-206 2380 0 185.5 35.5 None j TWSP-01-5 7 1200 168-206 4804 631 184 29.3 Real TWSP-01-5 8 1200 168-205 7454 1974 184.1 49 Real TWSP-01 5 9 1200 168-206 3696 255 185.8 37.8 Real TWSP-01-5 10 168-206 3871 0 185.3 29.2 None TWSP-01-6 0 168-206 649 64 186.2 38.5 None TWSP-01-6 1 168-206 607 0 185.6 28.3 None IWSP-01-6 2 168-206 526 97 185.5 36.4 None TWSP-01-6 3 168-206 521 0 185.4 35.3 None TWSP-01-6 4 168-206 2342 0 185.3 25.4 None TWSP-01-6 5 168-206 2095 67 185.1 36.5 None g TWSP-01-6 6 168-206 2324 257 185 33.8 None TWSP-01-6 7 1200 168-206 4348 409 182.7 45.5 Real TWSP-01-6 8 1200 168-206 16128 4998 181.9 26.9 Real TWSP-01-6 9 1200 168-206 11540 3467 184 22.2 Real DVSP-02-1 0 168-206 699 !!4 185.1 33.9 None TWSP-02-1 1 168-206 728 0 185.4 41.6 None TWSP 1 2 168-206 650 0 185.6 34.5 None TWSP 1 3 168-206 712 88 185.9 47.8 None TWSP-02-1 4 1200 168-206 7694 947 183.8 28.4 Real nVSP-02-1 5 1200 168-206 16467 3987 183.7 38.2 Real TWS P 1 6 1200 168-206 9129 315 184.9 41.3 Real NS P-02-1 7 1200 168-206 13304 1214 184.8 28 Real TWSP-02-1 8 168-206 2955 0 185.2 49.6 None TWSP-02-1 9 168-206 3329 0 185.7 74 None nVSP-02-1 10 168-206 3388 0 185.4 31.6 None TWSP 1 11 168-206 4460 326 185.6 33.5 None TWSP-02-1 12 1200 168-206 5173 610 185.7 43 Real TWSP-02-2 0 168-206 542 0 185.1 35.7 None TWSP-02-2 1 168-206 703 0 185.6 39.6 None O (/ MJW Corporation Inc. Page 2 of 5 January 22,1997

~- l Appendix G1. Reev-luation of 1995 2" TWSP Spectra I 8# Location Channel Net Counts CewoM NW Depth (ft) Coun y) Des ion g TWSP-02-2 2 168-206 643 0 185 33.8 None j TWSP-02-2 3 168-206 633 0 185.5 34.9 None IWSP-02-2 4 168-206 3819 0 184.7 28.7 None ) TWSP-02-2 5 163-206 6934 226 185.1 35 None TWSP-02-2 6 1200 ,8-206 11338 1120 184.7 43.6 Real i l TWSP-02-2 7 1200 206 7209 14?// 184.5 24.6 Real TWSP-02-2 8 1200 168-206 10198 1930 184.4 25 Real l TWSP-02-2 9 1200 168-206 8221 1630 184.8 58.9 Real TWSP-02-2 10 1200 168-206 9950 1019 184.9 31.9 Real DVSP-02-2 11 1200 168-2 % 11414 1610 185.6 46.2 Real TWSP-02-3 0 168-206 481 0 185.0 40.3 None TWSP-02-3 1 168-206 670 7 186.1 37.8 None TWSP-02-3 2 168-206 720 0 185.7 40.8 None TWSP-02-3 3 168-206 882 0 185.5 36.6 None IWSP-02-3 4 168-206 3316 79 185 36.8 None TWSP-02-3 5 168-206 2741 167 185.3 36 None TWSP-02-3 6 1200 168-206 4451 434 184.1 45.6 Real TWSP-02-3 7 1200 168-206 6849 1169 183.4 28.1 Real i TWSP-02-3 8 1200 168 206 6955 1027 184.3 28 Real i TWSP-02-3 9 1200 168-206 7543 991 184.3 26.5 Real TWSP-02-3 10 1200 168-206 48539 12425 183.8 10.6 Real TWSP-02-3 11 1200 168-206 7937 1463 184.8 25.3 Real TWSP-02-3 12 1200 168-206 6396 858 184.8 31.1 Real TWSP-02-3 13 1200 168-206 11095 2632 185.2 32 Real TWSP-02-4 0 168-206 701 0 185.3 38.6 None TWSP-02-4 1 168-206 718 16 185.5 451.1 None TWSP-02-4 2 168-206 753 0 185.3 38.3 None TWSP-02-4 3 168-206 747 123 185 31 None TWSP-02-4 4 168-206 2988 0 185.5 52.8 None TWSP-02-4 5 1200 168-206 6867 979 156.4 122.6 Real TWSP-02-4 6 1200 168 206 10389 1333 157.8 34.9 Real TWSP-02-4 7 1200 168-206 14711 3191 167.3 28.1 Real TWSP-02-4 8 1200 168-206 12929 2169 175.1 24 Real TWSP-02-4 9 1200 168-206 7025 1591 175.5 25.1 Real TWSP-02-4 10 1200 168-206 11018 1875 173.9 33.2 Real TWSP-02-4 11 1200 168-206 7091 1007 180.3 18.9 Real TWSP-02-4 12 1200 168-206 4606 731 179.9 28.5 Real TWSP-02-4 13 1200 168-206 4172 486 189.9 32.4 Real TWSP-03-2 0 168-206 240 0 184.4 30.0 None TWSP-03-2 7 168-206 2308 0 185.8 36.6 None ESP-03 2 8 172-193 2180 156 181.8 20.9 None T% SP-03-2 9 1200 172-193 17136 4320 179.9 -172.7 Real ~ MSP-03 2 10 1200 172-193 3804 0 185.1 37.5 Real MJW Corporation Inc. Page 3 of 5 January 22,1997

Appendix G1. Reev11uation of 1995 2" TWSP Spectra EY Location Cliannel Net Counts CentroM NW on[n tion Dep (ft) Co n y) g TWSP-04-2 0 168-206 669 45 185.1 37.5 None TWSP-04-2 1 168-206 593 47 185.4 37.9 None TWSP-04-2 2 168-206 420 69 185.9 31.3 None TWSP-04-2 3 168-206 461 71 184.9 33.6 None TWSP-04-2 4 168-206 2531 152 184.8 41.2 None TWSP-04-2 5 168-206 2617 0 185 39.9 None TWSP-04-2 6 168-206 2620 0 185.1 42.2 None TWSP-04-2 7 168-206 2981 56 185 36.7 None TWSP-04-2 8 168-206 4336 163 184.6 34.8 None TWSP-04-2 9 168-206 5535 75 183.9 37.1 None TWSP-04-2 10 1200 168-206 3865 394 183.8 30.2 Real TWSP-04-2 11 1200 168-206 12835 2968 184.1 25.4 Real TWSP-04-2 12 1200 168-206 11933 2456 183 21.4 Real TWSP-04-2 13 1200 168-206 5850 930 178.2 36.6 Real TWSP-04-2 14 168-206 3802 58 185.3 34.6 None TWSP-04-2 15 168-206 4233 606 185.4 39.8 None TWSP-04-2 16 1200 168-206 9409 2857 185.3 27 Real TWSP-05-1 9 1200 168-206 17813 1355 181.4 18.5 Real TWSP-05-1 10 1200 168-206 20353 3973 180 3 Real TWSP-05-1 11 1200 168-206 25052 3407 6.9 56 Real TWSP-05-1 12 1200 168-206 28376 1817 7 20.9 Real TWSP-05-1 13 1200 168-206 17669 2264 183.6 22.6 Real TWSP-05-2 0 168-206 368 0 184.7 34.1 None TWSP-05-2 1 168-206 523 16 185.4 38.1 None TWSP-05-2 2 168-206 392 41 184.7 35 None TWSP-05-2 3 168-206 416 0 185.8 38.8 None TWSP-05-2 4 168-206 1787 0 184.6 46.5 None TWSP-05-2 5 168-206 2301 0 185.4 51.6 None TWSP-05-2 6 1200 168-206 4665 687 184.2 34.9 Real TWSP-05-3 8 1200 168-206 7257 627 184 l 27.2 Real TWSP-05-3 9 1200 168-206 23444 3944 184.8 29.4 Real TWSP-05-3 10 1200 168-206 17993 1613 185.2 34.2 Real TWSP-05-3 11 168 206 4232 59 185.3 43.7 None 1 TWSP-05-3l 12 168 206 4030 52 185.8 37.5 None TWSP-06-1 7 1200 168-206 42473 11897 183.7 18.4 Real TWSP-06-1 8 1200 168-206 12943 2898 182.3 55.4 Real TWSP-06-1 9 1200 168-206 35597 14108 183.9 33.9 Real TWSP-06 1 10 1200 168-206 5398 952 184.9 27.5 Real TWSP-06-1 11 1200 168-206 6285 1213 184.7 23.8 Real TWSP-06-1 12 1200 168-206 11067 3501 185.3 71.3 Real lTWSP-07-1l 6l l 168-206l 3976l 427l 184.2l l 2al Nonel MJW Corporation Inc. Page 4 of 5 January 22,1997

{ Appendix G1. Reevrluation of 1995 2" TWSP Spectra i g[cn ,3,, Location Channel Net Counts Centroid FWIIM C TWSP-07-1 7 1200 168-206 29477 8807 182.6 15.9 Real TW SP-07-1 8 1200 168-206 13273 3406 183.4 -24 Real TWSP-07-1 9 1200 168-206 3983 902 184.6 33.7 Real TWSP-07-1 10 1200 168-206 6208 1723 185.2 37 Real lTWSP-07-2l 12l l 168-206l 2917l 70l 185.6l l 36.6l Nonel ] TWSP-07-3 0 168-206 410 59 185.2 38.8 None TWSP-07-3 1 168-206 796 0 185.4 38 9 None [ TWSP-07-3 2 168-206 749 0 185.5 41.4 None TWSP-07-3 3 168 206 810 0 185.5 45 None TWSP-07-3 4 168-206 3087 0 185.5 52 Norie TWSP-07-3 5 168-206 3091 0 185 96.2 None TWSP-07-3 6 1200 168-206 6846 1125 183.7 81.7 Real j 1 TWSP-07-3 7 1200 168-206 7800 1833 184 32.4 Real 1 1 TWSP-07-3 8 168-206 3298 22 185,1 32.4 None TWSP-07-3 9 168-206 3039 75 185.2 23.6 None TWSP-07-3 10 168-206 3530 137 184.8 30.1 None TWSP-07 3 11 168-206 3818 113 184.2 30.2 None i TWSP-07-3 12 1200 168-206 6470 1322 184.3 13 Real TWSP-07-3 13 1200 168-206 3720 834 184.1 35.7 Real TWSP-07-3 14 1200 168-206 5936 749 185.1 22.1 Real TWSP-07-3 15 168-206 2921 0 185.5 37.2 None TWSP-07-3 16 168-206 3122 236 185.5 47.2 None i TWSP-07-3 17 1200 168 206 3811 262 185.4 35.5 Real TWSP-10-1 7 1200 168-206 9566 2156 183.2 21.6 Real 1 TWSP-10-1 8 1200 168-206 13309 4261 184.5 28.4 Real j TWSP-10-1 9 168-206 3122 236 185.5 47.2 None 4 TWSP-10-5 11 1200 168-206 15428 3767 183.7 24.9 Real J TWSP-10-5 12 1200 168-206 8358 1728 184.1 29.1 Real 1 TWSP-10-5 13 1200 168-206 31498 383 185.3 23.5 Real TWSP-10-8 6 168-206 739 76 185.5 40.3 None IWSP-10-8 7 168-206 2774 0 185.4 25.3 None ] 1 TWSP-10-8 8l 168-206 3124 4 185.3 41.5 None i i s i i ! O i MJW Corporation Inc. Page 5 of 5 January 22,1997 i}}

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