Environmental Statement - Maersk Oil

Balloch Field Development Environmental Statement
Section 6 Accidental Spills
Figure 6‐9 Water column and sediment summary outputs for 2 days at the surface and the remainder at
subsea.
62°00'N
60°00'N
58°00'N
56°00'N
62°00'N
60°00'N
58°00'N
56°00'N
Blowout ‐ 2 day surface release + 89 day subsea release
5°00'W
200 km
5°00'W
Probability of oil exceeding 50 ppb (dissolved + droplets)
5°00'W
200 km
5°00'W
0°00'E
0°00'E
0°00'E
0°00'E
Concentration of oil in sediments
Maximum sediment conc'n 170 g/m 2
Equivalent conc'n over 5cm* 1700 mg/kg
Typical sediment conc'n** 3 g/m 2
Equivalent conc'n over 5cm* 30 mg/kg
** representative of larger affected areas * 5cm used as typical sediment mixing depth
5°00'E
5°00'E
5°00'E
5°00'E
10°00'E
Statistical Map: Water-Column: Probability of contamination above threshold (50 ppb of tot.conc.) [%]
10°00'E
10°00'E
62°00'N
60°00'N
58°00'N
56°00'N
120:00:00
10°00'E
62°00'N
60°00'N
58°00'N
56°00'N
6 ‐ 17