Case Studies
Case Study | A417 Missing Link
The Missing Link itself is a three-mile stretch of single-lane carriageway on the A417 between the Brockworth bypass and Cowley Roundabout in Gloucestershire.
October 1, 2025
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SPEL provide a wide range of products and systems for the storage, attenuation, monitoring, treatment, and utilisation of surface water. This includes our latest SuDS compliant products and SPEL fuel/oil Separators that meet the European standard BS EN 858.
Our products are manufactured by advanced state-of-the-art filament winding and are designed for many applications including but not limited to: package pumping stations, emergency spillage containment, sewage primary settlement treatment, fire sprinkler reservoirs, transformer oil containment, waste and oily water storage etc.
SPEL GRP tanks are bespoke built in a wide range of capacities, for underground and above ground applications, in both horizontal and vertical formats.
The SuDS approach mimics natural drainage by incorporating different components designed to allow infiltration into the ground, provide storage on site and/or slow down (attenuate) flows of rainwater.
SPEL Stormceptors are designed for long term performance and with SPEL high volume coalescer units, low maintenance.
SPEL Tankstor tanks are manufactured for many applications and in a wide range of specifications to handle such substances as water, sewage, farm effluent, petroleum products and chemicals.
SPEL Products supply containment tanks to safeguard accidental spillage during the loading and offloading of chemicals.
The SPELGuard service and support division has been set up to monitor, service and maintain your SPEL water quality assets at peak performance.
SPEL package pumping stations incorporate all pumping equipment; pipework, valves, pedestals, guide rails factory fitted and tested – eliminating expensive sitework installing pumping equipment under difficult conditions.
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The Missing Link itself is a three-mile stretch of single-lane carriageway on the A417 between the Brockworth bypass and Cowley Roundabout in Gloucestershire.
SPEL Packaged Pumping Stations – WRc Approved Tested for the ultimate and reliable performance with 30 year Warranty Haskayne WWTW
Surface water management is no longer just about moving water, it’s about doing it safely, sustainably, and cost-effectively. With stricter regulations and the growing need for Sustainable Drainage Systems (SuDS),
What Does This Mean for Intensive Poultry Farms? In a landmark decision, the UK High Court has recently classified chicken manure as ‘waste’ under environmental legislation. This change brings significant
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| Model | Series | Treated Flow Rate | Maximum Flow | Connectible / Catchment area (m²)* | Oil Storage (litres) | Silt Capacity (litres) | Tank Length (mm) | Internal Diameter (mm) | Inlet Invert (mm) | Base to Inlet (mm) | Base to Outlet (mm) | Optimum in / out pipe diameter ** (mm) | Number of Access Shafts A-C*** (dia. mm) | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| L | A | B | C | 750 | 900 | 1200 | |||||||||||||
| 210C1/ESR | 200 | 10 | 100 | 1,333 | 150 | 1,000 | 2,920 | 1,220 | 550 | 1,350 | 1,300 | 300 | 1 | – | – | ||||
| 212C1/ESR | 200 | 12 | 120 | 1,600 | 180 | 1200 | 3,570 | 1,220 | 550 | 1,350 | 1,300 | 300 | 1 | – | – | ||||
| 215C1/ESR | 200 | 15 | 150 | 2,000 | 225 | 1,500 | 4,237 | 1,220 | 550 | 1,350 | 1,300 | 300 | 1 | – | – | ||||
| 320C1/ESR | 300 | 20 | 200 | 2,665 | 300 | 2,000 | 3,200 | 1,800 | 700 | 1,450 | 1,350 | 450 | – | – | – | ||||
| 325C1/ESR | 300 | 25 | 250 | 3,333 | 375 | 2,500 | 3,535 | 1,800 | 700 | 1,450 | 1,350 | 450 | – | – | – | ||||
| 330C1/ESR | 300 | 30 | 300 | 4,000 | 450 | 3,000 | 4,420 | 1,800 | 700 | 1,450 | 1,350 | 450 | 1 | 1 | – | ||||
| 340C1/ESR | 300 | 40 | 400 | 5,333 | 600 | 4,000 | 5,760 | 1,800 | 740 | 1,410 | 1,310 | 450 | 1 | – | – | ||||
| 345C1/ESR | 300 | 45 | 450 | 6,000 | 675 | 4,500 | 6,563 | 1,800 | 740 | 1,410 | 1,310 | 450 | 1 | – | – | ||||
| 350/C1/ESR | 300 | 50 | 500 | 6,665 | 750 | 5,000 | 7,060 | 1,800 | 740 | 1,410 | 1,310 | 450 | 1 | – | – | ||||
| 460C1/ESR | 400 | 60 | 600 | 8,000 | 900 | 6,000 | 4,400 | 2,600 | 950 | 2,100 | 2,000 | 600 | 1 | 1 | – | ||||
| 470C1/ESR | 400 | 70 | 700 | 9,333 | 1,050 | 7,000 | 5,250 | 2,600 | 950 | 2,100 | 2,000 | 600 | 1 | 1 | – | ||||
| 480C1/ESR | 400 | 80 | 800 | 10,665 | 1,200 | 8,000 | 6,170 | 2,600 | 950 | 2,100 | 2,000 | 600 | 1 | 1 | – | ||||
| 4100C1/ESR | 400 | 100 | 1,000 | 13,333 | 1,500 | 10,000 | 7,400 | 2,600 | 1,100 | 1,950 | 1,850 | 750 | 1 | 1 | – | ||||
| 4125C1/ESR | 400 | 125 | 1,250 | 16,665 | 1,875 | 12,500 | 9,000 | 2,600 | 1,100 | 1,950 | 1,850 | 750 | 1 | 1 | – | ||||
| 4150C1/ESR | 400 | 150 | 1,500 | 20,000 | 2,250 | 15,000 | 9,930 | 2,600 | 1,100 | 1,950 | 1,850 | 750 | – | 2 | – | ||||
| 4160C1/ESR | 400 | 160 | 1,600 | 21,333 | 2,400 | 16,000 | 11,830 | 2,600 | 1,250 | 1,950 | 1,850 | 750 | 1 | 2 | – | ||||
| 5180C1/ESR | 500 | 180 | 1,800 | 24,000 | 2,700 | 18,000 | 7,472 | 3,500 | 1,185 | 2,690 | 2,550 | 900 | 1 | 2 | – | ||||
| 5200C1/ESR | 500 | 200 | 2,000 | 26,665 | 3,000 | 20,000 | 8,530 | 3,500 | 1,185 | 2,570 | 2,355 | 1,200 | 1 | 2 | – | ||||
| 5250C1/ESR | 500 | 250 | 2,500 | 33,333 | 3,750 | 25,000 | 10,040 | 3,500 | 1,185 | 2,690 | 2,355 | 1,200 | |||||||
| 6300C1/ESR | 600 | 300 | 3,000 | 40,000 | 4,500 | 30,000 | 10,310 | 4,000 | 1,325 | 2,850 | 2,675 | 1,200 | 1 | 2 | – | ||||
| 6350C1/ESR | 600 | 350 | 3,500 | 46,665 | 5,250 | 35,000 | 11,500 | 4,000 | 1,325 | 2,850 | 2,675 | 1,200 | 2 | 3 | – | ||||
| 6400C1/ESR | 600 | 400 | 4,000 | 53,333 | 6,000 | 40,000 | 12,690 | 4,000 | 1,325 | 2,850 | 2,675 | 1,200 | 2 | 3 | – | ||||
| 6500C1/ESR | 600 | 500 | 5,000 | 66,665 | 7,500 | 50,000 | 15,880 | 4,000 | 1,325 | 2,850 | 2,675 | 1,200 | 2 | 4 | – | ||||
| 6600C1/ESR | 600 | 600 | 6,000 | 80,000 | 9,000 | 60,000 | 18,256 | 4,000 | 1,325 | 2,850 | 2,675 | 1,200 | 1 | 5 | |||||
| 6700C1/ESR | 600 | 700 | 7,000 | 93,333 | 10,500 | 70,000 | 22,250 | 4,000 | 1,325 | 2,850 | 2,675 | 1,200 | |||||||