Environmental Remediation Works
Case study
Environmental Remediation Works
Culvert and outfall remediation works to the River Trent
Scope
ments and Method Statements.
- Riverside works supervised by Specialist Following the ceasing of quarrying activities in the Freshwater Ecologist area, remediation works are being undertaken to • Bubble curtain silt-protection measures restore the land. In preparation for a future nature reserve, a new 24m culvert pipe was to be laid • Temporary works of steel sheet pile connecting the new lake with a tilting weir in the cofferdams to both lakeside and riverside nature reserve to an outfall to the River Trent. This locations to prevent flooding of the work was designed to help control the water levels in the areas and provide suitably dry conditions reserve. • Over-pumping discharge 20m away to facilitate ground percolation of silt laden water being ‘sieved’ prior to re-entering River Trent
- Fish, eels and other aquatic life rescue, segregation and stress management measures
- Biosecurity protocols including disinfection and pollution prevention
- Working in and with water hazards Tilting Weir Design Cross-Section Tilting Weir Design Front Elevation Lake-side Tilting Weir Completed River Trent Outfall with steel pile cofferdam River Trent Outfall completed in situ All necessary permits from the Environment Agency were obtained in advance of works. In Taking the role of Principal Contractor, Sweeting accordance with our Principal Contractor Bros Ltd have a long history of working in the obligations under CDM 2015, co-ordination and quarrying community addressing specific issues co-operation methodologies were utilised to during quarrying activities and in the post ensure appropriate supervision of sub-contract working remediation necessary to return the land piling works together with our own directly and environment to an equal or better standard undertaken activities by way of Risk Assess- than before.
Works were timed to reduce the risk of flooding
Particular environmental concerns arise when
and volumes of water from adverse weather working in the green environment, especially in conditions. Furthermore, in order to effect or near bodies of water Sweeting Bros Ltd have appropriate fish and aquatic life protection significant experience and have developed measures, specialist services from a Freshwater extensive biosecurity protocols together with Ecologist were needed. habitat protection measures.
Key Aspects
: SWARKESTONE QUARRY REMEDIATION • All necessary Environmental Permits
WORKS including Environment Agency FR2 electro-
Client: Tarmac Trading Ltd fish rescue permit
Duration: 5 weeks • Commission of Ecology Report Scope: • Riverside works supervised by Specialist Following the ceasing of quarrying activities in the Freshwater Ecologist area, remediation works are being undertaken to • Bubble curtain silt-protection measures restore the land. In preparation for a future nature reserve, a new 24m culvert pipe was to be laid • Temporary works of steel sheet pile connecting the new lake with a tilting weir in the cofferdams to both lakeside and riverside nature reserve to an outfall to the River Trent. This locations to prevent flooding of the work was designed to help control the water levels in the areas and provide suitably dry conditions reserve. • Over-pumping discharge 20m away to facilitate ground percolation of silt laden water being ‘sieved’ prior to re-entering River Trent
ments and Method Statements.
- Fish, eels and other aquatic life rescue, segregation and stress management measures
- Biosecurity protocols including disinfection and pollution prevention
- Working in and with water hazards Tilting Weir Design Cross-Section Tilting Weir Design Front Elevation Lake-side Tilting Weir Completed River Trent Outfall with steel pile cofferdam River Trent Outfall completed in situ All necessary permits from the Environment Agency were obtained in advance of works. In Taking the role of Principal Contractor, Sweeting accordance with our Principal Contractor Bros Ltd have a long history of working in the obligations under CDM 2015, co-ordination and quarrying community addressing specific issues co-operation methodologies were utilised to during quarrying activities and in the post ensure appropriate supervision of sub-contract working remediation necessary to return the land piling works together with our own directly and environment to an equal or better standard undertaken activities by way of Risk Assess- than before.
Works were timed to reduce the risk of flooding
Particular environmental concerns arise when
and volumes of water from adverse weather working in the green environment, especially in conditions. Furthermore, in order to effect or near bodies of water Sweeting Bros Ltd have appropriate fish and aquatic life protection significant experience and have developed measures, specialist services from a Freshwater extensive biosecurity protocols together with Ecologist were needed. habitat protection measures.
Project Images
Challenges
with the use of tracked vehicles ensure substrate integrity remains intact. Furthermore, wider
Flood risk
protection measures are necessary such as safe A significant issue and key at every stage is the storage of potential pollutants, minimising human management of existing of water bodies and presence and activities including timings, durations forecasted weather conditions. Temporary works by and noise/air pollution from idling of engines. way of steel piles had to be put in place before
A bubble curtain was utilised specifically to manage
implementing any arrangements to cast new the risk of silt being inadvertently discharged into concrete infrastructure. Appropriate pumping out of the River Trent. of water to ensure dry conditions are met.
Biosecurity measures to ensure no contaminants
Environmental Impact Minimisation
were either brought in or removed from the works It was necessary to commission an Ecology Report area. All operatives and plant undertook to fully understand the nature of the habitats and disinfectant protocols. wildlife in the area. Furthermore, to ensure that all
Health & Safety
protected species were known, together with all legislative and environmental considerations All workings were carried out compliantly under understood with regard to the potential impacts of CDM 2015 protocols requiring Construction Phase the planned works. Plans together with comprehensive assessment of all risks and method statements to minimise risks
Working in or near water in the green environment
for all work elements. brings particular issues to overcome, such as access across long stretches of landowner fields Sweeting Bros Ltd are unique in that we have together with the use of heavy plant using potential invested in mountain rescue sleds and equipment pollutants such as oils, grease and diesel fuels all to facilitate patient evacuation in the event of an bring specific hazards. Thus, pollution prevention accident. Our work is often in secluded, protocols need to be deployed such as daily inaccessible areas with very poor ground checks, the use of plant nappies/spill kits. Trackway conditions such that ambulances or a helicopter protection and weight dispersal measures together may sink.
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