The Control of Pollution (Oil Storage)(England) Regulations 2001
Compliance is now mandatory Time Scale: These regulations came into effect from September 2005, it is mandatory to comply with the regulations, even if no spill occurrence has been reported.
Scope: The regulations cover all commercial and institutional businesses storing oil above ground in quantities over 200 litres in any type of container – (25litre drum, 205litre drum, IBC or tank). Oil means any kind of oil and fuel.
Requirements: All oil containers must be stored in a bunded area or on a drip tray (sump pallet). This is mandatory and it is an offence not to comply. In their present form, the regulations require drums to be stored on a drip tray with a sump capacity of 25% and if more than one drum 25% of the total. Tanks require 110% capacity and if more than one 25% of the aggregate total.

Pollution Prevention Guideline 26 (PPG 26) Section 7. DEALING WITH SPILLAGES
Spill kits containing materials such as leak-sealing putty, over-drums, drain seals, oil or chemical absorbents and personal protective equipment (PPE) should be on site. These should be located both within or near the storage area and remote from it (in case during an event it is not possible to reach the equipment near the storage containers). All staff should be trained in the use of this equipment. Consider providing a ‘quarantine area’ where leaking containers can be placed safely.

This important initiative, started in 1997, is a voluntary Code of Considerate Practice, which is adopted by participating construction companies, and everyone involved on the construction site.
Terms of Reference (Environment Section)
point 10. Avoid pollution and wastage at all times.
point 11. Have fuel oil spillage clean-up equipment available.