| Lead-210 via | Cerro Grande Forest Fire | 08/01/2001 |
| Radiochemistry |
| Page 1 of 3 |
| ====================================================================================================== |
| Sample | Sample | Net Air Concentration | Gross Air Concentration | Chemical Analysis | Filter | Sample |
| Start | End | ----------------------------- | ----------------------------- | ------------------------------ | Air | Fraction |
| Date | Date | Result Uncertainty | Result Uncertainty | Result Uncertainty | Vol. | Analyzed |
| fCi/m3 | fCi/m3 | pCi/Sample | (m3) |
| ====================================================================================================== |
| 48th Street |
| Pb-210-R |
| 05/09/2000 | 05/11/2000 | 28.6 | 10.7 | 27.5 | 7.1 | 2.34 | 0.60 | 170 | 0.5 |
| ------------------------------------------------------------------------------------------------------ |
| Barranca School |
| Pb-210-R |
| 05/09/2000 | 05/11/2000 | 10.5 | 5.8 | 9.9 | 3.7 | 1.51 | 0.56 | 306 | 0.5 |
| ------------------------------------------------------------------------------------------------------ |
| Eastgate |
| Pb-210-R |
| 05/09/2000 | 05/11/2000 | 7.0 | 5.0 | 6.5 | 3.2 | 1.12 | 0.55 | 347 | 0.5 |
| ------------------------------------------------------------------------------------------------------ |
| Espanola |
| Pb-210-R |
| 05/10/2000 | 05/11/2000 | 13.5 | 9.1 | 12.5 | 5.8 | 1.21 | 0.56 | 193 | 0.5 |
| ------------------------------------------------------------------------------------------------------ |
| LA Hospital |
| Pb-210-R |
| 05/09/2000 | 05/11/2000 | 16.8 | 6.1 | 16.1 | 4.0 | 2.37 | 0.59 | 294 | 0.5 |
| ------------------------------------------------------------------------------------------------------ |
| ===================================================================================================== |
| Note: The values in the Net Air Concentration column are calculated by subtracting an average blank value from the analytical |
| result. This is the current approved method for calculating Air Concentrations. The values in the Gross Air Concentration |
| column are calculated directly from the analytical result, with no correction applied. |