A St. Louis environmental group headed by brewery giant Adolphus Busch the Fourth has ended talks with federal officials about creating a federal wildlife refuge in the flood plains where the Missouri and Mississippi Rivers converge. Instead, the group is going ahead with plans for keeping the flood plain out of the hands of developers through private funding. The group is called Great Rivers Habitat Alliance. The new plan would put together private money and some federal funds to buy land in the St. Charles County and Lincoln County flood plains. A spokesman says the idea now is to keep the federal government completely out of operating the refuge. It would be run by local officials.