Table 3.6. Summarized Distribution of Mean Lead Levels 
in Resource Survey Species (continued) 
Percent of U. S. Catch 2 
Percent of2/ Intended for 
Range, ppmt/ No. of Species Up sGateh Human Consumption 
Mollusca, edible 
tissues 
3/ 
O20) 0)..3 2 Kes * 
0.4 to 0.5 2; O52 0.4 
O25) t00.6 5 Ws 7 Sra 
OR6: to) 0.7 7 IEA V 340, 
0.7 to 0.8 aL OS O67 
0.8 to 0.9 1 0.1 (0) sal 
TOTAL: 18 3.8 US 
Crustacea, edible 
tissues 
O%4 to. 0.5 1 * * 
OF jto, 0/6 4 ieee, ayn5) 
0.6 to 0.7 9 8.9 shine 
Oo to: 05S iL 370 6.2 
0.8 to 0.9 all (all 
TOTAL: 16 IS }57/ 28.4 
1/ Mean analytical values falling on the upper limit of each range are 
included in the next higher range (e.g. 0.2 is included in the range 
0.2 to 0.3 ppm and not 0.1 to 0.2 ppm). 
2/ See page 12 for an explanation of these columns. 
3/ * denotes less than .05%. 
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