| N˚ | Borehole | Children | Adults | ||
| CR (Hg) | CR (As) | CR (Hg) | CR (As) | ||
| 1 | B1F | 1.03 × 10−4 | 7.02 × 10−5 | 5.47 × 10−5 | 3.74 × 10−5 |
| 2 | B2F | 8.07 × 10−5 | 3.98 × 10−5 | 4.31 × 10−5 | 2.12 × 10−5 |
| 3 | B1Kr | 5.96 × 10−5 | 1.76 × 10−5 | 3.18 × 10−5 | 9.37 × 10−6 |
| 4 | B2Kr | 1.75 × 10−4 | 3.04 × 10−5 | 9.36 × 10−5 | 1.62 × 10−5 |
| 5 | B1K | 9.27 × 10−5 | 1.09 × 10−5 | 4.95 × 10−5 | 5.82 × 10−6 |
| 6 | B2K | 4.77 × 10−5 | 1.28 × 10−5 | 2.54 × 10−5 | 6.84 × 10−6 |
| 7 | B3K | 2.93 × 10−5 | 6.56 × 10−5 | 1.56 × 10−5 | 3.50 × 10−5 |
| 8 | B1T | 1.03 × 10−4 | 1.46 × 10−5 | 5.50 × 10−5 | 7.78 × 10−5 |
| 9 | B1M | 3.67 × 10−5 | 2.44 × 10−4 | 1.96 × 10−5 | 1.30 × 10−4 |
| 10 | B1O | 1.32 × 10−4 | 0.00 × 10+00 | 7.05 × 10−5 | 0.00 × 10+00 |
| 11 | B1I | 1.98 × 10−4 | 9.58 × 10−5 | 1.06 × 10−4 | 5.11 × 10−5 |
| 12 | B2I | 7.85 × 10−5 | 1.61 × 10−5 | 4.19 × 10−5 | 8.60 × 10−6 |
| 13 | B1B | 1.39 × 10−4 | 3.48 × 10−4 | 7.44 × 10−5 | 1.86 × 10−4 |
| Average | 9.82 × 10−5 | 7.43 × 10−5 | 5.24 × 10−5 | 3.96 × 10−5 | |