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General Binding Rules 10 and 11

Controlled activity in GBR 10: Discharge of water run-off from a surface water drainage system to the water environment from buildings, roads, yards or any other built developments, or construction sites for such developments, or construction sites for such developments, and, if desired, the construction and maintenance of any water outfall in or near to inland surface water which forms, or will form, part of that system.

Rules for GBR 10:

• all reasonable steps shall be taken to ensure that the discharge shall not result in pollution of the water environment;
  
  
• the discharge shall not contain any trade effluent or sewage, and shall not result in visible discolouration, iridescence, foaming or growth of sewage fungus in the water environment;
  
  
• the discharge shall not result in the destabilisation of the banks or bed of the receiving surface water;
  
  
• the discharge shall not contain any water run-off from any built developments, the construction of which is completed after 1st April 2007, or from construction sites operated after 1st April 2007, unless -
  
  during construction those developments are drained by a SUD system or equivalent systems equipped to avoid pollution of the water environment
  
  following construction those developments are drained by a SUD system equipped to avoid pollution of the water environment
  
  the run-off is from a development that is a single dwelling and its curtilage
  
  the discharge is to coastal water;
  
  
• the discharge shall not contain any water run-off from –
  
  fuel delivery areas and areas where vehicles, plant and equipment are re-fuelled
  
  vehicle loading or unloading bays where potentially polluting matter is handled
  
  oil and chemical storage, handling and delivery areas, constructed after 1st April 2007;
  
  
• all facilities with which the surface water drainage system is equipped to avoid pollution, including oil interceptors, silt traps and SUD system attenuation, settlement and treatment facilities, shall be maintained in a good state of repair;
  
  
• all reasonable steps shall be taken to ensure that any matter liable to block, obstruct, or otherwise impair the ability of the surface water drainage system to avoid pollution of the water environment is prevented from entering the drainage system; and
  
  
• the construction or maintenance of the outfall shall not result in pollution of the water environment.

Activity controlled under GBR 11: Discharge into a surface water drainage system.

GBR 11 rules:

• oil, paint, paint thinners, pesticides, detergents, disinfectants or other pollutants shall not be disposed of into a surface water drainage system or onto any surface that drains into a surface water drainage system;
  
  
• any matter liable to block, obstruct, or otherwise impair the ability of the surface water drainage system to avoid pollution of the water environment shall not be disposed of into a surface water drainage system or onto a surface that drains into a surface water drainage system;
  
  
• sewage or trade effluent shall not be discharged into any surface water drainage system; and
  
  
• on construction sites any area of exposed soil from which water drains into a surface water drainage system, and the period of time during which such water drains, shall be the minimum reasonably necessary to facilitate the construction works being undertaken at that site.