Flooding and cyclones in Australia hurt RPS's trading in the first quarter of 2011, but the environmental services group remains upbeat. Profits in the first half are likely to be similar to those in 2010, as a result of the Australian disruption RPS said, adding that growth in the second half should allow market expectations for 2011 to be achieved."So long as economic recovery continues, we are optimistic this is likely to mark the beginning of a new period of growth for RPS," chairman Brook Land said.