Casella Waste Systems Inc. (NasdaqGS:CWST) has filed a shelf registration in the amount of $250 million. Casella Waste Systems said, "We intend to use the net proceeds from the sale of any securities offered under this prospectus for general corporate purposes unless otherwise indicated in the applicable prospectus supplement. General corporate purposes may include the acquisition of companies or businesses, repayment and refinancing of debt, working capital and capital expenditures."