Daeth ceisiadau i gael gwared ar ddeunydd wedi'i garthu i law'r Uned Caniatadau a chawsant eu prosesu yn unol â gofynion yr MCAA a Rheoliadau Gwaith Morol (Asesiad o'r Effaith Amgylcheddol) 2007 (fel y'i diwygiwyd) (MWR). Daeth dau gais ar wahân i law (gan i'r deunydd gael ei garthu o ddau safle - yr ardal o gwmpas y lanfa dros dro a gwaith arall yn y môr) ond un drwydded a roddwyd. Dengys y cofnodion bod y ceisiadau i waredu deunydd yn nyfroedd Cymru wedi ystyried yr Asesiad o Effaith Amgylcheddol prosiect Hinkley Point C.
Applications for the disposal of dredged material were received by the MCU and were processed in line with the requirements under the MCAA and the Marine Works (Environmental Impact Assessment) Regulations 2007 (as amended) (MWR). Two separate applications were received (due to the dredged material arising from 2 sites – the temporary jetty area and other offshore works) but one licence was issued. Records show the applications for the disposal of material in Welsh waters took into account the overall EIA for the Hinkley Point C project.