Table 2. Measurements of the depth of drill cuttings from graduated marker buoys and Barium concentration and sediment particle size from push core samples taken at the Morvin site during the Pre, Post 2 and Post 3 surveys.

Survey	Section (mm)	Distance (m) from well	Depth of cuttings (mm)	Ba (mg kg−1)	Sediment particle size; % fines (<69 µm)
Pre	0–50	0	0	150	53.6
Pre	0–50	50	0	n/a	37.9
Pre	0–50	100	0	n/a	38.4
Post 2	0–50	0–10	400	5450 (±1202)	80.2 (±3.4)
Post 2	0–50	100	<50	230	45.4 (±4.3)
Post 3	0–20	25		6133(±1332)	76.9 (±15.6)
Post 3	20–40	25		4791(±1998)	63.8 (±26.9)
Post 3	40–60	25		3283(±2525)	60.3 (±27.9)
Post 3	0–20	50		6291(±1505)	58.1 (±19.7)
Post 3	20–40	50		1991(±2438)	41.3 (±9.6)
Post 3	40–60	50		547(±454)	37.1 (±6.0)

Figures in parentheses are standard deviation. For Post 2 samples n = 3 and for Post 3 samples n = 8.