{"entry-date":"2025-06-21","start-date":"","end-date":"","entity":73008738,"name":"Impervious bases/walls","dataset":"planning-condition","typology":"policy","reference":"U0118845","prefix":"planning-condition","organisation-entity":109,"geometry":"","point":"","quality":"authoritative","notes":"Unique Condition","reason":"To prevent pollution to the water environment and in the interests of local amenity.","description":"Any oil, fuel or chemical storage tank or container, shall be sited on impervious bases and surrounded by impervious bund walls. The volume of the bunded compound shall be at least equivalent to the capacity of the tank or container plus 10 %. If there is multiple tankage, the volume of the bunded compound shall be at least equivalent to the capacity of the largest tank, or the combined capacity of interconnected tanks plus 10%. All filling points, vents, gauges and sight glasses must be located within the bund. The drainage system of the bund shall be sealed with no discharge to any watercourse, land or underground strata. Associated pipe work shall be located above ground and protected from accidental damage. All filling points and tank overflow outlets shall be constructed to discharge vertically downwards within the bunded compound."}