TABLE 1

Sediment Concentration Data and Standards for Metals

All values are expressed in mg/kg on a dry weight basis

Location	Station	Cd	Cr	Cu	Pb	Hg	Ag	Zn	As	Se
Androscoggin	1	0.06	9.2	3.4	5.9	0.05	0.015	27	0.9	0.35
Androscoggin	2	0.1	17	7.4	10	0.25	0.02	56	1	0.35
Androscoggin	3	0.07	9.2	3.4	6	0.06	0.04	33	1	0.2
Bay	4	0.09	17	5.7	8.8	0.06	0.04	46	1	0.35
Bay	5	0.06	11	3.3	4	0.06	0.025	32	0.45	0.45
Bay	6	0.3	33	13	20	0.2	0.2	81	4	0.5
Bay	7A	0.05	5.8	1.3	1.9	0.03	0.025	15	1	0.45
Bay	7B	0.3	27	10	15	0.13	0.08	66	3	0.5
Kennebec	8	0.1	22	6.7	8.8	0.08	0.05	43	3	0.4
Kennebec	9A	0.07	24	4.5	11	0.04	0.03	49	4	0.5
Kennebec	9B	0.2	27	10	15	0.1	0.09	69	4	0.5
Kennebec	10	0.2	39	13	19	0.09	0.1	72	6	0.5
Kennebec	11	0.2	38	12	32	0.1	0.1	82	6	0.5
Kennebec	12	0.1	22	6	8.6	0.05	0.04	44	4	0.4
Standards	ER-L	5	80	70	35	0.15	1	120	3*	--
	ER-M	9	145	390	110	1.3	2.2	270	8*	--

ER-L represents concentration reported as toxic in 10% of literature
ER-M represents concentration reported as toxic in 50% of literature
(Source: Long & Morgan 1990)

*E.P.A. Standards 1982 (Source: Senten & Charlier 1991)