Document zmYdgDyk4nB9nNxw2Mgvz1o0

MILWAUKEE SENTINEL MILWAUKEE, WISC. 0. 180,349 JUN 26 1975 fyUL 1'Study to Detail Trouble in Fishery j i>_ Special toThe Sentinel sissippi River (Lake Pepin . Aims, Whu - Fish samples ereeX but Lake Michigan and ' taken recently from the Missis- the Fox River near portage as | ippi Rivr here and being ena* wall. N S' | Wad in Madleon an expected matted new light on the etetus of tbe river1! troubled fishery. . Samples from the PCB hot ots a r e flowing into DNR boratories, creating a beck* f .A State Department of Natu Jog of work, Klelnert said. , ral Resources (DNR) team of Fish samples ere ground and aquatic biologist*. hampered at | timet bp thunderstorms and fat is extracted with solvent The extraction hexane is heat* lUgh water, spent four days Catherine samples of rou|h fjih and came flth at preselect* ad stations near hers and Nel* ed in a gas chromotogreph and 1 various substances are emitted at different intervals, KJeinert said. ' - About 120 samples were col* iected from hundreds of fish netted or shocked by tbe three: Twin Cities Eyed with this method, chemists have been able to establish "fingerprints" of substances in the extract and compare them 1 The samples are being exam* with "fingerprints" of forms tned for signs ofnolycMorinafr of PCB --* the most common s^io^^sffCEOfamanjmt& being eroclor 1242, 1248 end 1284, caused cancer and deformed PCB is found In heat exchen* girths among laboratory ant* gars, cooling insulation, hy* mala. d r u 11 c fluids, and sewage "In May, the US Food and treatment plants. Suspected drug Administration (FDA) sources on tits Mississippi Riv discovered illegally high er center at the Twin Cities amounts of PCS In carp proe area. Meed by a Lake Pepin fish The chemical, similar to- wholesaler. The fish contained DDT, has been detected In the more then the 5 parts per mil* river since 1870 end DNRs lien PCS allowed by federal most recant tasting came in standards, 1873. . PDA ordartd a halt to inton Klelnert said report on the state shipments of the fish, 1879 survey Is expected to be mast of which wax* harvested released soon. Workload at the from Lake Pepin on the MJssta lab baa slowed its release. sippl River, end the wholesaler waa forced to buy 30 tons of Early Release carp fUJets valued at $3,500. However, in 1 i g h t of the scope and publicity PCB has J'DA's action also halted attained recently, a report on commercial fishing activity bo the 1978 study is expected in tween Alma and Red Wing August, he said. Minn. Study to Continue It will be shared among a task force of Wisconsin. Min* DNR plans to continue its nesota end federal agencies. dumrat study of the fishery at Eventually, data assimilated stations near Pepin and Pres* by Minnesota agencies at edtt along the river in July, ac tempting to locate PCB cording to Stan Klelnert, chief sources and determine the PCB Of DNR's surveniance section. impact elsewhere on the river tJf special internet to DNR wiu also be included. and sport fishermen ere game "In the early stages of PCB fUfa found In the river. Experts analysis chemists weren't as eey PCB levels generally art sure of the results as they am higher in game fish because of now," Klelnert said. f their feeding habits, ''When we have our moet re '"Wleoonsin and Minnesota cent samples analyzed, we'll agencies also have urged limit* be in a lot better position to ed consumption of fish taken give results on whet the sftua- fiwm not only the Upper Mis ion is now." HONS 031187