| Bay of Quiberon | Gulf of Morbihan | Sediment Quality Guidelines (SQGs) | ||||
| Mean | Min - Max | Mean | Min - Max | Non Polluted | Moderately Polluted | Heavily polluted |
Cu | 14.4 | 2.56 - 40.9 | 21.9 | 1.20 - 48.6 | <25 | 25 - 50 | >50 |
Zn | 40.7 | 4.60 - 98.9 | 38.4 | 4.78 - 89.9 | <90 | 90 - 200 | >200 |
Cd | 0.07 | 0.01 - 0.19 | 0.11 | 0.01 - 0.30 | - | - | >6 |
Pb | 15.1 | 3.61 - 28.0 | 23.8 | 2.43 - 42.7 | <40 | 40 - 60 | >60 |