Table 1 
Estimated Trace Metals Inputs to Puget Sound 
(Mt/yr) 
Metal 
Source Type 
Arsenic (As) 
64 
34 
11 
1.5 
63 
Cadmium (Cd) 
19 
17 
0.5 
1.5 
2 
Chromium (Cr) 
89 
68 
ND* 
16 
18 
Copper (Cu) 
108 
75 
32 
24 
56 
Lead (Pb) 
55 
54 
121 
25 
15 
Mercury (Hg) 
4 
3 
0.1 
0.2 
0.1 
Silver (Ag) 
4 
1 
0.1 
3 
2 
Zinc (Zn) 
384 
305 
27 
51 
47 
Total 
726 
557 
192 
119 
203 
• NO = No Data 
Source: Quinlan, E.A. et al. 1985. NOAA Technical Memorandum: Toxic Chemicals and 
Biological Effects in Puget Sound: Status and Scenarios for the Future, Table 23, pg. 74. 
18 
