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Case Study: Clearing A Blocked Ditch and Two Culverts

The Problem: A Ditch and Two Culverts Blocked with 100 Tonnes of Silt

 

Our services were required to maintain the drainage system of an estate in Birdham. Two culverts and a ditch had become blocked with a dangerous level of silt.

clearing a ditch and culverts

Cutting roots in ditch and culverts

The ditch had become over grown with tree roots and weeds. The culverts were becoming clogged with silt. The maintenance was required as part of flood prevention work in the county. The ditch ran along the side of the housing estate and was essential to their drainage in the face of a large amount of rainfall. Without this work, flooding would be a serious danger for these properties.

Hydro Cleansing clearing a ditch and culvert

Our solution:

Following our site visit Hydro Cleansing established that the following were required to complete the job:

Three areas were blocked: a ditch 85m in length was blocked with approximately 80 tonnes of silt waste; one 450mm culvert that was 65m in length and one 450mm culvert which was 100m in length. The amount of waste in the culverts was confirmed on completion of the job as 13 tonnes. A 20,000 litre  bulk tanker brought the water supply for the high pressure jetting work which was required to dislodge the silt and mud from the tree roots in the ditch. The water was also necessary to jet through the culverts. The work was completed over 5 days. The CCTV team were there for 2 days completing pre work and post work surveys.

The 2 man team Jetting a culvert and ditch clearworked in the ditch, jetting the silt clear of the roots, while maintaining the essential tree roots.

The powerful suction of the super combination unit at 3500CFM meant that the silt was sucked away into the waiting articulated bulk tanker. The waste was removed and disposed of each evening at Hydro Cleansing’s own wet waste disposal plant.

 Tankers clearing ditch and culvert

Hydro Cleansing’s Result

Clearing the 85m ditch, 65m and 100m culvert and removing and disposing of 100 tonnes of waste was completed on time and meant the risk of flooding was significantly reduced. 

 

Flood annihilated by Megatron and Hydro Cleansing!

Flood annihilated by Megatron and Hydro Cleansing!

 

A life threatening flash flood was vacuumed up in 3 hours by Megatron, Europe’s largest vacuum tanker and the Hydro Cleansing fleet. They delivered an emergency solution to the flash flood in the underpass beside Wallington Station, where 3 cars were swamped by 2m of water on the 7th of June 2016.

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1 month’s rainfall fell in 1 hour in a horrendous storm, the lightening from which started several fires across the South of London.  3 cars were trapped. One stalled, the next became trapped as the waters knocked out the engines. The third inexplicably drove into the flood water on purpose. One man was trapped in his car and had to be rescued by a passer-by breaking his car window with a brick, allowing him to get out and wade clear of the water bound car.7V7A0797

Immediately a bulk tanker was dispatched from Hydro Cleansing’s depot in Beddington Lane, Croydon with a police escort and arrived at the scene within an hour of the storm beginning. The three cars were submerged. The 13,000 litre bulk tanker began pumping out the water. 2 combination vacuum tankers followed to the site to remove more of the oil contaminated water. As those tankers left to tip the waste, Megatron, the largest vacuum tanker in Europe emblazoned with transformers graffiti fan art, arrived to clear the rest of the oily waste and empty the 60m soakaway. The bulk tanker returned to relieve Megatron of the waste. The engineers pushed the ruined cars off the road and finally one of Hydro Cleansing’s road sweepers cleared the oily silt from the road The road could then reopen 3 hours after the incident. The fleet of giant orange tankers fulfilled Megatron’s heroic reputation and also provided a neat and tidy end to this environmental thriller.

Megatron flood

 

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This kind of flooding is becoming increasingly prevalent. It would be easy to dismiss this as a one off act of God but Paris remains submerged and the forecasts indicate that storms will continue to become more intense as global temperatures rise. “Warming temperatures can make the air hold more water – and that in turn could mean a greater chance for floods”, says Nigel Arnell at the University of Reading, UK. Russell Grattan, Commercial Director at Hydro Cleansing identified that the soakaway under the underpass did have some foliage blocking the flow of the drainage. This flash flood exposed infrastructure weak spots and highlights the need for thorough flood planning to be in place.

Wild, Orange and Extremely Competent! Hydro Cleansing Are Your Festival Maintenance Saviours!

Bouncing up and down to your absolute favourite band is incredible until someone pees in the middle of the crowd because the toilets are more disgusting than the field of mud! Festival maintenance and cleaning are key to the fun not running out!

FESTIVAL WELLIES

Festival toilets are unavoidable. From people having heart attacks to falling asleep to having sex in them, porta loos are frequently the saddest, oddest and most disgusting of places. Amid the joy and jubilation of festival time, the toilets require festival people to undergo a grim ordeal.

How can this be managed, contained and made as safe and acceptable as possible?

Maintenance, regular cleaning and quality service!

Hydro Cleansing have been managing wet waste for 16 years and are experts in removing and cleaning up wet waste. Jetting the porta loos, removing surface water, mud and emptying cess pits are epic festival maintenance tasks that Hydro Cleansing are more than happy to deal with for you!

Mucking about in wellies is another classic festival experience. For organisers making sure it’s safe for the wild things to play in is essential!

mudfest

mud girl

 

Have a flood plan in place! When it rains, drainage and flood response need to be considered. Removing the liquid mud prevents having fun in the muck from turning into a dangerous situation.

Cleaning Mud Maintenance

How do you avoid scaring the festival goers memories with wet waste management troubles?

 

Have a flood plan.

Have a comprehensive toilet facilities strategy.

Plan the clean up.

 

Then get someone else to do it! Get the experts to deal with it!

Road sweeper at London marathon

Wild parties need wild trucks! We’ll provide the wet waste maintenance.

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As festival goers revel in Stevie Wonder’s set, we’ll keep the loos clean and safe to use.

Then you just sell the pulled pork pancakes and enjoy the party!

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