Acting on a recommendation from the state's Water Development Commission, the Wyoming legislature recently approved a $30 million appropriation to build the Sandstone Dam (HCN, 12/27/93). The commission okayed the project despite conflicting evidence regarding the geologic suitability of the site. Mike West, a geologist hired by opponents of the dam, says he found irregularities in the report by the commission's geological consultants. West charges they stopped their core sampling just short of a shale layer that's inadequate to anchor the kind of dam planned for the site. Work on an environmental impact statement begins this month.