Legal Requirements and Services Offered
Direct quote from PPG 3: Use and design of oil separators in surface water drainage systems
“Where are separators needed?
Surface water may be contaminated by oil at a number of different sites.
These sites need to have measures in place to prevent this oil from polluting the environment. These sites include:
- Car parks typically larger than 800m2
- In areas for 50 or more car parking spaces
- Smaller car parks discharging to a sensitive environment
- Areas where goods vehicles are parked or manoeuvred
- Vehicle maintenance areas
- Industrial sites where oil is stored or used
- Refuelling facilities
- Any other site with a risk of oil contamination.
Every six months, or in accordance with manufacturer’s instructions, experienced personnel should:
- Physically inspect the integrity of the separator and all mechanical parts
- Assess the depth of accumulated oil and silt
- Service all electrical equipment such as alarms and separator management systems
- Check the condition of any coalescing device and replace it if necessary
Every five years it is recommended that separators be emptied and given a general inspection to test the integrity and performance of the system. The separator must be refilled with clean water following such an inspection.
Some heavily used or high-risk sites might require more frequent inspections.”