Document gD0zvVkQ8DZ48k0kwnbkaoDqN

THE GRAND RAPIDS PRESS GRAND RAPIDS, MICH. () 130,000 (5) 136,000 APR 2 1 1975 D^R Traces Contaminant In Lake Superior Trout . _. LANSING (UPI I - The stete Depulment of Netural Resources says it to trjrtn* to trace sources at an Industrial chemical that departmertapacWlata found ta`iur* pmingly" high tevob in some Law iin__g__a_g_a!i_n_sat e..altii--ng ffits.kh from that Great Lake more than once a week. It to possible, officials said, that the chemical came tram Canadian companies at the north end of the lake. Superior trout. PCB to a compound used chiefly in the Thechemical t| polychlorinated bjehnnd electrical Industry as transformer fluid : toiS*(PCS), which connected in nmr way and also in paints and lubricants. I with PBB contamination that potoonad John Scott, head of the Great Lata 1 Michigan Itvestocklast year. fisheries section of the DNR, said the most , Natural resources officials said Sunday serious contamination apparently was in , they see no danger to humans who ealthe the ctocowet,aheavytroutthat lives tothe . contaminated trout In limited amounts. lake's deeper waters. Clscowet are high in fat, where contaminants are stored. | pari of their daily diet.' "Quite a few exceed the five parts per million guideline both in PCB andDDT, he said. 11* state agency also reported Increases The limit was set after residents of a In DDT and mercury levels. small Japanese village became seriously The Lake Superior findings followed ill In 1070 when PCB was accidentally earlier discovery of PCB cotrtunlnatlpn ta mixed with fish oil. Hundredsi of persons coho salmon and other ftah to Lake subsequently became ill with sain and Michigan. This led to state officials warrjj internal disorders and impaired visks^. HONS 030923