Table 3.2. Summarized Distribution of Mean Arsenic Levels 
in Resource Survey Species (continued) 
2/ Percent of U. S. Cat ch2/ 
Percent of= Intended for 
Range, ppmL/ No. of Species UeeoeuGateh Human Consumption 
Mollusca, edible tissues 
ZO sto) 3.0 6 Zee 4.0 
SOF to 4.0 5 16 Bid 
4.0 to 5.0 3 «3/ ORL 
Hea Onto;, 8:. 0 1 * * 
10.0 to 20.0 3} * On 
TOTAL: 18 3.8 os) 
Crustacea, edible tissues 
370) to 450 1 O59 {8 
“Onto! 5.0 5) 6.8 INyAys PR 
SOM tono0 aL eZ Pee) 
6205 to 7.0 ib 2.8 5.8 
90! to 11050 iL LS) 2.0 
10.0 to 20.0 4 OFZ 0.5 
20.0 to 30.0 2D ORS, ILS) 
40.0 to 50.0 1 * * 
TOTAL: 16 ES 7/ 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 12for an explanation of these columns. 
3/ * denotes less than .05%. 
17 
