Table 1.

Summary of median, mean, and maximum concentrations of dangerous metals and organic substances measured in soil samples from 34 investigated boatyards in coastal communities in Sweden

Element/compund	Guideline values for SL (mg/kg DW)	Guideline values for LSL (mg/kg DW)	Median of all median concentrations	Mean of all median concentrations (mg/kg DW)		Mean of all mean concentrations (mg/kg DW)		Mean of all maximum concentrations (mg/kg DW)		Maximum concentrations measured in the entire dataset from 34 boatyards
				Mean	SD	Mean	SD	Mean	SD	(mg/kg DW)
Cu	80	200	52	130	210	540	1,100	1,800	2,200	7,700
Zn	250	500	112	180	170	400	390	1,700	2,000	10,200
Pb	50	400	35	150	270	440	940	2,700	6,800	40,100
Hg	0.25	2.5	0.05	0.56	1.7	2.50	7.30	13	35	190
Cd	0.5	15	0.19	0.35	0.37	0.52	0.53	1.7	3.2	18
TBTa	1	2	0.23	3.7	10	7.0	13	16	28	110
PAH canc.	0.3	7	1.30	2.0	2.0	9.2	18	62	150	630
∑16 PAH	7	45	2.29	5.0	9.0	25	35	158	343	1,480
∑7 PCB	0.008	0.2	0.30	3.0	5.7	0.46	5.6	6.0	8.2	27

For comparison, the Swedish guideline values for Sensitive Land use (SL) and Less Sensitive Land use (LSL) are shown. Values higher than SL are marked in italics and higher than LSL are marked in bold

^aNo guideline value for TBT in soil exists in Sweden. The values in the table are based on recommendation in Finland (Finnish directive 2007)