X hits on this document

75 views

0 shares

0 downloads

0 comments

4 / 24

Geology and hydrogeology ... …

Report No. SRL/FP/004.1 (10/05/2006)

CONTENTS

Title Page............................................................................................................................................1 CONTENTS........................................................................................................................................ 3 SUMMARY ......................................................................................................................................... 4 EXECUTIVE SUMMARY .................................................................................................................4 About the Author................................................................................................................................6 INTRODUCTION ............................................................................................................................... 6 Kimmeridge Clay and Its Suitability for Sealing ...........................................................................7 The quantity of Kimmeridge Clay and the underlying Corallian Rag ....................................7 Sources of Imperfection in the Kimmeridge Clay.....................................................................9

  • (a)

    Fossils ............................................................................................................................. 9

  • (b)

    Palaeo channels..........................................................................................................10

  • (c)

    Faulting in the Corallian Rag and associated interruption in the continuity of the

Kimmeridge Clay .....................................................................................................................11 Leaching from Existing Disposal Areas .......................................................................................12 Evidence of leaching from lakes H/I.........................................................................................12 What has been done by RWE npower in relation to leaching from Lakes H/I? ................12 What might RWE npower do in relation to leaching from Lakes H/I?.................................13 Other Mechanisms for Escape of Pollutants...............................................................................14 On the Scientific Validity of Npower’s Flood Risk Assessment ...............................................15 Review of Appendix 7A: Flood Risk Assessment ..................................................................15 CONCLUSIONS AND RECOMMENDATIONS..........................................................................19 Appendix 1 : Postscript................................................................................................................21 On whether or not the Kimmeridge Clay in Lake E at Radley is suitable for large-scale bunding (sealing) the toxic contents, .......................................................................................21 On whether or not Lake F will drain if and when Lake E is drained for at least 5 months .......................................................................................................................................................21 On whether springs exist in the vicinity of Radley Lakes and whether such springs can damage the sealing efficiency of the clay bund of existing and proposed PFA dumps...22 Conclusions..................................................................................................................................23 Appendix 2 : Acknowledgements...............................................................................................23

Page 3 of 23

© SAVE RADLEY LAKES 2006

Document info
Document views75
Page views75
Page last viewedSat Oct 29 00:08:51 UTC 2016
Pages24
Paragraphs691
Words13658

Comments