To satisfy resource consent conditions for monitoring at 2 adjacent mussel farm sites in Port Levy, Sanford LTD commissioned NIWA to conduct a benthic monitoring survey using methods detailed in the resource consent. Sampling for this project included a benthic grab and benthic sled to obtain samples to describe sediment physicochemical characteristics, and benthic assemblages at sample sites established along transects extending to the northwest, north and east of the farm block. Results showed no evidence that the mussel farming activity had caused significant impacts to the benthic habitat or communities beyond farm boundaries.