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in sediment - SNOWMAN NETWORK

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Metals - Based on comparative values<br />

(natural background)<br />

Environmental Quality Criteria<br />

Metals<br />

(Swedish EPA, 1999)<br />

Klass 1<br />

Klass 2<br />

Klass 3<br />

Klass 4<br />

Klass 5<br />

Natural background<br />

Low concentration<br />

Medium concentration<br />

High concentration<br />

Very high concentration

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