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RECEIVED, JUL 241998 Colorado Water Conservation Board Rocky Mountain News Thu., July23, 1998 Effoi1s.to'kill)non-native'fish' meeti~~!Jth mixed success AssocialedPress (J,. 'i)~~d 'ponds within the 100-year flood- plain of the Colorado and Gunni- . son rivers. She said treating the ponds ,could cost anywhere from $2.5 million to $6.9 million,she said. , So far, she has treated thiee. . . A Delta gravel pit was suc- cessfully poisoned with chlorine in December 1996 and January 1997, at a cost of $35,000. The DOW has stocked the 9-acre pond with na- tive roundtail chub. ' . A 5-acre pond west of Grand Junction was pumped down and then poisoned with chlorine' in March 1997 at a cost of $17,600. The effort worked, but non~native fish have re-entered the pond. , . Martinez was to use rotenone to finish sterilizing the 21-acre Fruita ponds, pumped doWn in February. ' FRUITA - A state effort to kill . non-native fish to protect endan- gered species is having .only mixed success. The goal of Anita Martinez, manager of non-native fish eradi- cation for the Colorado Division of Wildlife, is to kill non-native carp, green sunfish and plains killifish that pose a threatto endangered native fish. Federal environmental laws re- quire that native Colorado River' species be ,protected, even if it ' means killing other fish. Martinez explained her pro- gram to water users and board members of the Colorado River Water, Conservation District on Tuesday. Martinez has counted 600 ~ i I I +, , i' i I l ! ! .\ , f { , f i I \', t t ;