TSF. Routine surveillance of the TSF ensures that maintenance and radiological controls that govern access to and placement, storage, and transfer of contaminated material in the TSF are current and effective. Surveillance this quarter (see surveillance checklists in Appendix A) revealed that: • The TSF cover, fencing, radiological controls, and signs have been maintained in accordance with the LTS&M Plan, and the TSF has been inspected and verified as ready to receive contaminated materials. LM is required to initiate the transfer of TSF materials for permanent disposal at the Grand Junction, Colorado, Disposal Site when the contents reach a volume of approximately 75 cubic yards. Recent TSF activity consists of the following: • Approximately 6 cubic yards of soil excavated from the city streets is stored in the TSF
TSF. Patch size TSF mapping Class mid point number frequency Area % of total Area 0-50 25 564 75.9% 14100 5% 51-100 75 46 6.2% 3450 1% 101-200 150 34 4.6% 5100 2% 201-500 250 32 4.3% 8000 3% 501-1000 750 17 2.3% 12750 5% 0000-0000 0000 38 5.1% 95000 35% 5001-10,000 7500 3 0.4% 22500 8% >10000 12500 9 1.2% 112500 41% In his summary (p 132) Xxxxxxx et al. indicates that TSF patches < 100 ha account for 82% of the total patches, but account for less than 5% of the forested area. This is further refined to 2.9% of the area on p119. By comparison Table 4.12 indicates that the patches < 100 ha account for 6.5% of the area. This difference is likely due to the choice of the mid point value and the fact the observation data is not arranged equally on either side of the mid point. The difference is small and likely not significant in assessing the trend in patch size. The percentage value for the class size < 50 ha in both Tables 4.12 and 4.14 would be more accurately represented as 2-3%.
