Distance from TP

GM conc. Of 226Ra (Bq.m-3)

Annual Dose mSv/y

< 1.5km

5.7

2.3

1.5-5km

6.3

2.6

> 5km

7.9

3.3
Table 5: Annual Ground water Ingestion Dose (μSv) due to 226Ra (2003-07).