Sinclair Knight Merz (SKM) has appointed former Scottish Environmental Protection Agency (SEPA) integrated pollution control specialist Ronan Doyle.
Harris has appointed Richard Bonner as partner in its Bristol office. He joins from Rose Project Services.
Partner Nick Cryer, who has led the business in Bristol since its launch in April 2003, will now full a more national role.
Mutter has been appointed by Morrison Construction, part of the Galliford Try group, as project director on its Olympic Park remediation contract. He joins from Jackson Civil Engineering where he was regional director.