StARR Project Construction

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After several years of development, planning and design of natural flood management and harder engineering measures to reduce flood risk to the community of Par and St Blazey, we've started construction at a number of sites in the area.

  • To see the latest update for each site, please click on the links below.
  • You can view the construction drawings on the Proposed Flood Schemes page or use the link to the right of this page
  • If you would like to contact the team or find out more about the StARR Project, please see the links on the right of this page.

Ponts Mill, Luxulyan Valley World Heritage Site

Ponts Mill to the north of St Blazey is in a popular walking area in the Luxulyan Valley industrial World Heritage Site. In 2019 the historic ‘perched’ Par River breached its riverbank and Cormac carried out emergency temporary work to reinforce the bank to reduce the risk of flooding of properties downstream. Ecological surveys were carried out before vegetation was cleared and some trees felled to allow access; care was taken to minimise disturbance to wildlife. Felled trees were left on site to create wildlife habitat. Tree felling also revealed a view of the viaduct that had been obscured. After a winter of exceptionally wet weather, the riverbank was breached again; a design for a permanent solution was developed and construction work began in August 2020. Cormac strengthened the existing riverbank by building an additional stone bank against it and completed this before the winter. The area has been landscaped to enhance the ecology of the site and improve biodiversity, and an accessible seating area has been created. This work was completed in April 2021.

Please see the latest update in the news area below.


Par Lane Drainage and Rain Gardens

This work involves improvement of the highway drainage system in the Par Lane, St Blazey Road and Harbour Road area and construction of rain gardens along Par Lane. Cornwall Council Highways team have also co-ordinated their maintenance work with the StARR Project to carry out improvements and repairs to the existing highway drainage network and to resurface parts of the highway. Various types of traffic management were used to keep people safe.

The Par Lane Rain Gardens are one of the StARR Project’s ‘natural flood management’ measures. Rain gardens are bio-retention facilities with water-tolerant plants, designed to treat and slow down storm water run-off. During heavy rainfall, they will take and store rainwater and excess water from the road and slowly release it back into the drainage system. Construction work began at the end of March 2022.

Please see the latest update in the news area below.


A390 St Austell Pond and highway drainage improvements

This is the area of grassland next to the main road through St Blazey, with its flower-filled boat, at the Trenovissick Road junction near The Four Lords pub.
Example of an attenuation pond after heavy rainfall - Dolcoath


This work includes construction of a storage (attenuation) pond in the grassed area, installation of extra highway drainage, gullies, maintenance chambers and supporting pipework, and landscaping of the grassed area.

The attenuation pond is another of the StARR Project’s natural flood management measures. During heavy rainfall, the pond will take and store excess water from the road and slowly release it back into the drainage system.

Landscaping work includes:

  • A wetland meadow species rich grass mix to diversify for nature and visual interest; this mix will cope with the ephemeral wet and dry conditions of the basin.
  • Native species trees to diversify the site and frame the basin.
  • A boulder stepping trail in the base to provide an interactive feature of natural play.
  • Existing grass areas enhanced with bulb planting under trees with a range of species including Daffodils, Bluebells and Snowdrops.
  • An extra bench by the basin to provide a relaxation and viewing point.
Construction work started in late February 2021 and was finished in May, ahead of programme. Please see the latest update in the news area below.

St Andrews Road – main river work

Work in the St Andrews Road area is the first of a number of improvement schemes along the main river. At this site, vegetation and tree clearance was carried out before bird nesting season to ensure that the flood defence river work could be carried out. The work includes:

  • building a raised footpath in the park
  • building flood defence banks by the river
  • installing sheet piles to strengthen the riverbank, and
  • landscaping the park area

The work also includes:

  • installing bird and bat boxes and delivering other environmental improvements, and
  • using leftover wood to improve seating in the park.

Contractor Kier have built their main site compound on land near St Andrews Road. The site office has been set up in an existing building away from the construction work. Please see the latest update in the news area below.


Bull Engine Park

A water storage pond has been created at the Bull Engine Park play area at Lamellyn Road, close to the Burrows Centre. This is another of the StARR Project's natural flood management measures. During heavy rainfall the pond will collect rainwater and take and store excess water from the road, and slowly release it back into the drainage system. Extra pipes were installed in the road and connected to the existing road drainage system.

Bull Engine Park before construction


Cormac used part of the car park of the Burrows Centre as the main construction compound for this work. Please see the latest update in the news area below.

Doubletrees School storage tank

During very heavy rainfall, surface water flowing down the A390 can make its way down the access road to Doubletrees School. The StARR Project measure here involves modification of the existing highway drainage network and construction of a large storage tank beneath the school carpark. Excess storm water will be collected in the tank then released slowly into the highway drainage system under the A390 after the storm has passed. Work started in April 2021 and was completed ahead of programme.

Please see the latest update in the news area below.

After several years of development, planning and design of natural flood management and harder engineering measures to reduce flood risk to the community of Par and St Blazey, we've started construction at a number of sites in the area.

  • To see the latest update for each site, please click on the links below.
  • You can view the construction drawings on the Proposed Flood Schemes page or use the link to the right of this page
  • If you would like to contact the team or find out more about the StARR Project, please see the links on the right of this page.

Ponts Mill, Luxulyan Valley World Heritage Site

Ponts Mill to the north of St Blazey is in a popular walking area in the Luxulyan Valley industrial World Heritage Site. In 2019 the historic ‘perched’ Par River breached its riverbank and Cormac carried out emergency temporary work to reinforce the bank to reduce the risk of flooding of properties downstream. Ecological surveys were carried out before vegetation was cleared and some trees felled to allow access; care was taken to minimise disturbance to wildlife. Felled trees were left on site to create wildlife habitat. Tree felling also revealed a view of the viaduct that had been obscured. After a winter of exceptionally wet weather, the riverbank was breached again; a design for a permanent solution was developed and construction work began in August 2020. Cormac strengthened the existing riverbank by building an additional stone bank against it and completed this before the winter. The area has been landscaped to enhance the ecology of the site and improve biodiversity, and an accessible seating area has been created. This work was completed in April 2021.

Please see the latest update in the news area below.


Par Lane Drainage and Rain Gardens

This work involves improvement of the highway drainage system in the Par Lane, St Blazey Road and Harbour Road area and construction of rain gardens along Par Lane. Cornwall Council Highways team have also co-ordinated their maintenance work with the StARR Project to carry out improvements and repairs to the existing highway drainage network and to resurface parts of the highway. Various types of traffic management were used to keep people safe.

The Par Lane Rain Gardens are one of the StARR Project’s ‘natural flood management’ measures. Rain gardens are bio-retention facilities with water-tolerant plants, designed to treat and slow down storm water run-off. During heavy rainfall, they will take and store rainwater and excess water from the road and slowly release it back into the drainage system. Construction work began at the end of March 2022.

Please see the latest update in the news area below.


A390 St Austell Pond and highway drainage improvements

This is the area of grassland next to the main road through St Blazey, with its flower-filled boat, at the Trenovissick Road junction near The Four Lords pub.
Example of an attenuation pond after heavy rainfall - Dolcoath


This work includes construction of a storage (attenuation) pond in the grassed area, installation of extra highway drainage, gullies, maintenance chambers and supporting pipework, and landscaping of the grassed area.

The attenuation pond is another of the StARR Project’s natural flood management measures. During heavy rainfall, the pond will take and store excess water from the road and slowly release it back into the drainage system.

Landscaping work includes:

  • A wetland meadow species rich grass mix to diversify for nature and visual interest; this mix will cope with the ephemeral wet and dry conditions of the basin.
  • Native species trees to diversify the site and frame the basin.
  • A boulder stepping trail in the base to provide an interactive feature of natural play.
  • Existing grass areas enhanced with bulb planting under trees with a range of species including Daffodils, Bluebells and Snowdrops.
  • An extra bench by the basin to provide a relaxation and viewing point.
Construction work started in late February 2021 and was finished in May, ahead of programme. Please see the latest update in the news area below.

St Andrews Road – main river work

Work in the St Andrews Road area is the first of a number of improvement schemes along the main river. At this site, vegetation and tree clearance was carried out before bird nesting season to ensure that the flood defence river work could be carried out. The work includes:

  • building a raised footpath in the park
  • building flood defence banks by the river
  • installing sheet piles to strengthen the riverbank, and
  • landscaping the park area

The work also includes:

  • installing bird and bat boxes and delivering other environmental improvements, and
  • using leftover wood to improve seating in the park.

Contractor Kier have built their main site compound on land near St Andrews Road. The site office has been set up in an existing building away from the construction work. Please see the latest update in the news area below.


Bull Engine Park

A water storage pond has been created at the Bull Engine Park play area at Lamellyn Road, close to the Burrows Centre. This is another of the StARR Project's natural flood management measures. During heavy rainfall the pond will collect rainwater and take and store excess water from the road, and slowly release it back into the drainage system. Extra pipes were installed in the road and connected to the existing road drainage system.

Bull Engine Park before construction


Cormac used part of the car park of the Burrows Centre as the main construction compound for this work. Please see the latest update in the news area below.

Doubletrees School storage tank

During very heavy rainfall, surface water flowing down the A390 can make its way down the access road to Doubletrees School. The StARR Project measure here involves modification of the existing highway drainage network and construction of a large storage tank beneath the school carpark. Excess storm water will be collected in the tank then released slowly into the highway drainage system under the A390 after the storm has passed. Work started in April 2021 and was completed ahead of programme.

Please see the latest update in the news area below.

  • Doubletrees School storage tank *Summer 2021*

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    The school car park will be out of use during construction of the new tank, so Cormac built a temporary car park and connecting path for the school in the grounds of the Cricket Club.

    The highway drainage system on the A390 (directly opposite the entrance to the school) was altered by adding gullies, water chambers and distribution pipes. Cormac have excavated material and installed half of the new water storage tank in the school car park area and are now excavating the other half.


  • Bull Engine Park, Lamellyn Road (Burrows Centre) *Summer 2021*

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    supporting image


    Work to build a storm-water storage pond and connect it to the drainage network is now complete. The basin was excavated and lined and drainage pipes were installed in Trenovissick Road and Lamellyn Road. Further landscaping work will be carried out in the Autumn.

    Cornwall Council will be installing a new skatepark for the community to enjoy and the StARR Project team have built the hard-standing for it. Following a previous public consultation, two designs were drawn up for the new skate facilities and Cornwall Council will be consulting local residents to find out which of the designs people would like.

  • St Andrews Road *Summer 2021* (please click on this link)

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    Row of metal sheet piles in the ground along the riverbank


    We needed to fell some trees in order to reach the work sites, and we’re installing steel sheet piles along the edge of the riverbank to strengthen it and raise flood defences.

    We need to close the footpath for safety until October; during the first part of the work we were able to re-open sections of the path temporarily but it has now been fully closed again.

    New bird and bat boxes have been set up in the area and we’ve created ‘bug hotels’, benches and cycle racks out of the felled trees. We also used ‘silent’ battery powered chainsaws to minimise noise on site and disturbance to local residents.

    A construction compound has been set up near the park and we have created a Covid-secure site office. If you have any questions, do call in and see us.


  • A390 St Austell Pond (near the Four Lords Pub) *Summer 2021*

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    supporting image


    We’ve created a storage pond in the grassed area, connected it to the drainage system and landscaped the area. Cormac carried out this work using traffic lights for safety and made good progress, finishing ahead of programme.

    This is a natural flood management measure that will gather water during a storm and slowly release it into the drainage network after the storm has passed, reducing flood risk in the area.

    The area has been seeded and 'stepping-stone' boulders will be placed in the basin. Trees will be added in the November/December tree planting season.

  • Par Lane *Summer 2021* (please click on this link)

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    Cormac began work to improve the drainage system around the Par Lane, St Blazey Road and Harbour road junction in early January and this work is now complete.

    The existing granite kerbs were removed, replaced with specialist drainage kerbs and the footway resurfaced. Connections were made to the surrounding highway drainage network and improvements and repairs carried out to maximise its performance.

    Cornwall Council Highways Department carried out their own repairs to the existing highway drainage network, co-ordinating their work with the StARR Project.

    Later this year we’ll return to build rain gardens along Par Lane.










  • Ponts Mill, Luxulyan Valley *Summer 2021*

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    Construction work to repair the historic riverbank at Ponts Mill, a popular walking area in the Luxulyan Valley World Heritage Site, was started in August 2020 to protect the downstream community from flooding, and this work is now complete.


    Cormac have strengthened the riverbank and landscaped the area to reinstate the ecology of the site and improve biodiversity with planting and seeding. The large granite boulders found within the excavation have been used as part of the landscaping , together with logs from the felled trees which will create natural habitats for wildlife, and an accessible seating area has been created. The landscaping will be completed and managed over the next year.

Page last updated: 08 Apr 2022, 11:31 AM