** Shares of pipeline operator up 4.6 pct atC$45.90 after a Minnesota regulator approved rebuild of co'sLine 3 oil pipeline
** The clearance, heavily angering environmentalists, comeswith conditions including a financial guarantee to clean up anyenvironmental damage
** The real win came with the Route Permit decision – TudorPickering analysts say on ENB receiving approval for a routeclose to its preference
** Brokerage says ENB may see near-term positive upsidegiven construction timeline uncertainty of Trans MountainExpansion
** So far this year, stock has fallen ~6 pct compared with a~1 pct rise in the S&P TSX oil and gas index
(Reporting by Anirban Paul)