Appendix 3 The SIC System compared with beach nourishment on the West Coast of Jutland. Coastal development at Gl. Skagen - fig. 1 As illustrated in fig. 1, the SIC System has a systematic building effect on a beach profile. Fig. 2 The longtime effect is shown in fig. 2, where the Test Area fitted with pressure equalization modules has a coastal increase of 5 – 10 m³ per metre as opposed to the reference areas which show an erosion of 3.5 – 10 m³   per metre. Test Area 1999 - 2002 Gl. Skagen -20 -15 -10 -5 0 5 10 15 20 25 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 11425 Cubic Metre/ Metre 6 Oct. 99 18 Jan. 00 28 Sep. 00 25 Jan. 01 26 mar. 02 25 sep. 02 Field Test 1999 - 2002 Old Skagen -15 -10 -5 0 5 10 3 May. 99   6 Oct. 99   18 Jan. 00  28 Sep. 00 25 Jan. 01  26 mar. 02   25 sep 02 Test Area Ref I Ref II

Erosion/Beach nourishment on the Danish West Coast. Sediment Calculation West Coast of Jutland Distance Stenbjerg - Nymindegab 130000  Metre Erosion Erosion direction north Stenbjerg -600000 Cubic metre Erosion Agger Point -330000 Cubic metre Erosion Thyboroen Point -900000 Cubic metre Erosion south Nymindegab -2300000 Cubic metre Erosion Total Per Year -4130000  Cubic metre Erosion per metre per year -31,7692308   Cubic metre Beach Nourishment Beach Nourishment north 775000 Cubic metre Beach Nourishment south 1625000 Cubic metre Beach Nourishment Total 2400000  Cubic metre Beach Nourishment per metre per Year 18,4615385  Cubic metre Netto Result -1730000  Cubic metre Erosion per metre per year -13,3076923  Cubic metre fig. 3 As it appears in Appendix 3.2, the West coast of Jutland is beach nourished every year with 2.4 mill. m³ sand; however the yearly erosion is 4.13 mill. m³ which is shown in Appendix 1 and fig. 3. Thus, the result of the beach nourishment on the West coast of Jutland is overall negative with a yearly erosion rate of 10 m³ per metre as opposed to the SIC System which is showing a positive profile of 5 – 10 m³ The SIC system is creating a naturally balanced profile whereas beach nourishment is causing steep profiles prone to increased erosion. The erosion on the West coast of Jutland is now approximately 32 m³ per metre per year – whilst beach nourishment is implemented.   In addition to the erosion comes a significant strain on the environment which is causing declining fish populations and a substantial CO² pollution.

Value for Money SIC System - West Coast Jutland Compared with Beach Nourishment -140 -120 -100 -80 -60 -40 -20 0 20 Sum. 99  Win. 00  Sum 00   Win 01   Sum 01   Win 02   Sum 02   Win 03 Beach Nourished Stabilized with SIC Fig 4 As illustrated in fig. 4 the SIC-treated beach is stabile due to the fact that during the summer season a “buffer” is built up which is sufficient to withstand the winter storms. Contrary to the SIC-treated beaches, erosion is occurring at a rate of 32 m³ per metre in the beach nourished areas according to the KDI record of sediment movement, Appendix 3.1. Subsequently the erosion on the Jutland West Coast amounts to 4.130.000 cubic metres per year, which will cost 22.6 million USD to maintain through beach nourishment in order to keep the beach stabile. The SIC system therefore has a real value of 22.6 million USD per year if implemented on the Jutland West Coast, because it is far more effective in stopping erosion than the present beach nourishment of 2.4 million cubic metres per year. As the SIC system only costs 3.8 million USD to operate and maintain, the savings would be 18.8 million USD and thus a far greater asset to society than previously estimated. Skagen, 14. September 2003. Poul Jakobsen

Appendix 3.1

Appendix 3.2.