** Shares of waste management company ESTR.O surge 37.4%
to $1.25 in premarket trading on deal to sell its biogas energy
business
** Top pct gainer among U.S.-listed stocks in premarket
trading
** Says will sell all its interest in that business to
Alberta Investment Management Corp (AIMCo) for ~R$30 mln ($7.8
mln)
** Co is using the R$30 mln upfront payment to improve its
current liquidity position
** Up to Tuesday's close, stock has fallen 36% this year
($1 = 3.8610 reais)
(Reporting by Amy Caren Daniel in Bengaluru)
((Reuters Messaging:
Amy.CarenDaniel.thomsonreuters.com@reuters.net))