At A Glance:
- Location : Leeming, North Yorkshire
- Client: National Highways
- Consultant: AECOM and SWECO
- Contractor: Morgan Sindall Infrastructure
Products Supplied:
- Models supplied: 340C1/SC, 460C1/SC, 470C1/SC, 2no. 480C1/SC, 4100C1/SC, 6300C1/SC
- BS EN 858 third party certification by HR Wallingford
- From 3 litres per second to 800 litres per second flow rate (Nominal Size) within a single unit
- From 30 l/s up to 8,000 litres per second peak flow rates
- Large silt and oil storage capacities to reduce maintenance intervals
- Ability to install automatic monitoring and alarm systems for continuous monitoring and pollutant levels
- BS EN 858 compliant oil separator – as Third Party tested by HR Wallingford.
- Large range of flow rates from small 4 l/s flow rates, up to large 1000 l/s flow rates.
- Includes an Automatic Closure Device that will automatically close off the system in the event of a large oil spill.
- Often used on site compounds where fuel refuelling is present thanks to the oil spill capacity.

National Highways invested £400 million in a 12 mile stretch of the A1 between Leeming and Barton – upgrading from a dual-carriageway to a new 3 lane motorway. This section of road is used by between 59,000 and 69,000 vehicles everyday and a 20% reduction in journey times and safety improvements is estimated to lead to around £4 in economic benefit for every £1 that National Highways invest. Main Contractor was Morgan Sindall with AECOM as the lead designer, alongside support from SWECO.
SPEL provided a total of 9 oil separators for this project, including 7no. Stormceptor bypass oil separators, ranging from a treatment flow rate of 40 l/s to a treatment flow rate of 300 l/s, ranging from our 300 Series range (1.8m dia.) all the way up to our 600 Series range (4m dia.). 2no. SPEL Puraceptor full retention separators were also supplied, both from our 400 Series range (2.6m dia.), one with 100 l/s treatment flow rate and the other with 200 l/s treatment flow rate. These oil separators provide very high quality water treatment of both the oil and silt within the water, protecting the downstream environment from the toxic cocktail of pollutants that come from road run-off.
All products were supplied with solar powered alarms (due to the remote location of the separators) and were supplied with a full suite of monitoring probes that will monitor the oil, silt and high water level of the separator.
Where silt removal is a primary concern, it is suggested that a SPEL ESR Bypass or ESR Full Flow is utilised thanks to their WRc tested silt removal performance.
Other motorway projects include 39 oil separators provided to the M25 at various parts of widening and expansion schemes and most recently a range of SPEL Smartceptor hydrodynamic vortex separators and SPEL ESR Bypass stormwater treatment devices supplied to the A417 Missing Link project.



