March, 2009. These guidelines have been prepared for the British Columbia Shellfish Growers Association in response to regulations prohibiting shellfish harvest within 125m of floating accommodations; the setback can be reduced to 25m if a zero discharge strategy is in place. The impetus behind the restrictions is based on consumer health risk and maintaining access to international markets. Discharge of waste and wastewater, especially black water (sewage), from the floating accommodations is the primary concern. The legislation affects many aquaculturists, especially those operating in remote locations where operator accommodations and production floats must both be moored within the water lease. By transitioning to zero-discharge within the growing area, these shellfish growers can maximize the production area of their leases.