By Mark Pazniokas, CT Mirror A study of Connecticut’s state government in advance of an expected wave of retirements next year has identified as much as $900 million in potential savings in executive agencies with total budgets of $14 billion, while acknowledging the significant obstacles to making changes in one of the most heavily unionized public-sector workforces in the United States. The report released Wednesday by the administration of Gov. Ned Lamont says 8,000 of the 30,000 executive-branch employees are eligible to retire by July 1, 2022, when retirement benefits will be reduced under the terms of a 2017 concession deal. A survey found about 70% of the eligible workers were leaning toward retiring.