Appendix CRF - Part 3 - Northamptonshire County Council

7.0 Proposals for Liquid and Gaseous Discharges
7.0.1 The proposal involves no specific authorised liquid or gaseous discharge routes.
Inadvertent discharge to the air from gas generation from the waste form has
been included in the risk assessment which shows that the radioactive emissions
will be negligible (Annex B). Discharge to groundwater has been included in the
risk assessment which shows that the potential emissions are very low and will
not result in exceedance of relevant constraint limits (Annex B).
7.0.2 A specific risk assessment has been provided for any radioactive exposure or
environmental impact arising from leachate management practices (Annex B).
Leachate is currently treated offsite. It is not reasonable to model the impact
from leachate using the same conservative assumptions concerning leachate
activity levels that are used for the groundwater modelling. The optimal approach
for controlling any impact that may arise from leachate management is to place
an authorisation limit on leachate activity levels such that the consequent impact
is insignificant. Should the leachate ultimately have higher activity levels than the
authorisation limit, then an alternative treatment would be considered which could
include a detailed risk assessment and revised limit (see 8.6).
Application for disposal of LLW including HV-VLLW under RSA 1993,
for the East Northants Resource Management Facility:
Supporting Information
July 2009
55
WS010001/ENRMF/CONSAPPCRF 374