Document VKzD0e4Zz17BZL36RmZVrbNw

The Ami Arbor News ANN ARBOR. MICH. D. 36,403 SUN. 37,230 DEC 11 1975 ^ High Level Of DDT Found In Trout MARQUETTE (UPI) -- Researchers at Northern Michigan University have found that some Lake Superior trout h|ve nearly twice the level of DDT and aimoat three tithes the level of PC8 considered sate (or human consumption. " '' The five-year research project was conducted by Dr. Ronald Parekjo, associate professor of biology, and former NMU graduate students Ray mond Johnston and Robert Keller. In their study, the researchers found Lake Superior trout/containing from one (o nine parts per million of DDT and three to M parts per mil lion of PCB. The U.S. Food and Drug Administration has set five parts per million as the maximum "safe" levels for both chemicals. HONS 03318<r