EA3 Chapter 8 Marine Water and Sediment Quality

concentration below which adverse biological effects are expected to occur only rarely (in some sensitive species for example). The higher level, the PEL, defines a concentration above which adverse effects may be expected in a wider range of organisms.

Table 8.5 Selected Canadian Sediment Quality Guideline Values (taken from CCME 2002) Contaminant

Units Arsenic

Cadmium Chromium Copper Mercury Lead Zinc

Acenaphthene Acenaphthylene Anthracene

Benz(a)anthracene Benzo(a)pyrene Chrysene

Dibenz(a,h)anthracene Fluoranthene Fluorene

Napthalene

Phenanthrene Pyrene

48.

mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg µg/kg

TEL

7.24 0.7

52.3 18.7 0.13 30.2 124 6.71 5.87 46.9 74.8 88.8 108 6.22 113 21.2 34.6 86.7 153

PEL

41.6 4.2

160 108 0.7

112 247 88.9 128 245 693 763 846 135

1494 144 391 544

1398

The potential for release and dispersion of sediments due to construction, operation and decommissioning of the proposed East Anglia THREE project has been informed by a physical processes assessment in Chapter 7 Marine Geology, Oceanography and Physical Processes.

8.4.3.1 Sensitivity 49.

The sensitivity of a receptor is a function of its capacity to accommodate change and reflects its ability to recover if it is affected. It is quantified via a consideration of adaptability, tolerance, recoverability and value.

Preliminary Environmental Information May 2014

East Anglia THREE Offshore Windfarm

Chapter 8 Marine Water and Sediment Quality Page 17

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