| Item |
Alternative
|
| Closed case |
SSB-case |
Open case |
| Financial
costs< |
| Construction costs (DFL million) |
2135 |
4645 |
3620 |
| Annual maintenance (DFL million) |
10 |
25 |
15 |
| Peak year expenditure (DFL million) |
0 |
0 |
0 |
| Security< |
| Land flooded (ha) in 1/4000 storm |
0 |
0 |
400 |
| Technical uncertainty |
None |
Scour |
Dikes |
| Land flooded during construction (ha) |
430 |
200 |
530 |
| Value of real estate flooded (DFL million) |
50 |
20 |
60 |
| Number of people at risk |
800 |
360 |
970 |
| Ecology< |
| Rapid kill of benthic biomass (tons afdw) |
11500 |
4500 |
4200 |
| Gradual loss of biomass (tons afdw) |
5050 |
-8000 |
300 |
| Time to stabilize (years) |
6.5 |
6.0 |
0.0 |
| Total biomass (tons afdw) |
5200 |
29700 |
21300 |
| Potential benthos-eating birds (tons afdw) |
1 |
9 |
7 |
| Potential fish-eating birds (tons afdw) |
4 |
.06 |
.03 |
| Potential mussels (percent of present) |
13 |
90 |
100 |
| Potential oysters (percent of present) |
0 |
90 |
100 |
| Fish nursery function (percent of present) |
0 |
133 |
73 |
| Fishing |
| Jobs lost |
199 |
7 |
0 |
| Annual production loss (DFL million) |
30.3 |
1.4 |
0 |
| Accumulated net loss (DFL million) |
89 |
0 |
0 |
| Shipping |
| Accumulated savings through 1999 (DFL million) |
27.2 |
8.9 |
0 |
| Recreation |
| Extra sea beach visits |
338 |
0 |
0 |
| Extra inland beach visits |
108 |
88 |
68 |
| Percent decrease in salt-water fish quantity |
75 |
0 |
25 |
| Number of extra moorings |
1060 |
900 |
0 |
| National economy (peak year) |
| Jobs< |
5800 |
9000 |
5700 |
| Imports (DFL million) |
110 |
200 |
130 |
| Production (DFL million) |
580 |
940 |
560 |
| Regional effects |
| Number of households displaced |
-37 |
0 |
124 |
| Jobs, peak year |
-230 |
90 |
290 |
| Production, peak year (DFL million) |
-37 |
13 |
38 |