Table 3.4. Summarized Distribution of Mean Chromium Levels 
in Resource Survey Species (continued) 
Percent of U. S. Cat ch2/ 
1 Percent of2/ Intended for 
Range, ppml/ No. of Species Unmonmecaticlh Human Consumption 
Mollusca, edible tissues 
OMI ro 10:52 3 OES) 0.6 
O22 t010'33 5 0.4 Oras 
0.3 to 0.4 8 3.0 Great 
0.4 to 0.5 i 3/ x 
0.5 to 0.6 1 * * 
TOTAL: 18 Se) hes 
Crustacea, edible tissues 
ORI to! (0). 2 7! 2056 Bin 
O2 sto) 103 9 Iie AL 22.9 
TOTAL: 16 13°36 PRS VS) 
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). 
See page 12 for an explanation of these columns. 
* denotes less than .05%. 
IRIs 
21 
