Thames river bank Chiswick, Hounslow Council

We were asked by Hounslow Council to visit the site to clear the sloped concrete river bank leaving 20% of the foliage for cover. The project included pollarding (i.e. pruning, during which the upper branches of a tree are removed; the result is a dense head of foliage and branches) two large London planes to allow light to reach the Chiswick shore trust building.

In addition, we cleared an area to prepare for some foliage to be treated. The trees required a considerable amount of man power and experience as we needed to rig large limbs into the bank and over the rail. However, our Smart winch lowering device made easy work of this, helping the team to work safely and efficiently.

The Thames Tideway Tunnel, Blackfriars Bridge planting

The Thames Tideway Tunnel is a major new sewer, urgently needed to protect the tidal river Thames from pollution. The total Tideway project has a budget of £3.1 billion.

London’s sewerage system is no longer fit for purpose and spills millions of tonnes of sewage into the tidal section of the river every year.

Tideway is building the tunnel to tackle the problem of overflows from the capital’s Victorian sewers for at least the next 100 years and to enable the UK to meet European environmental standards.

PGSD was contracted by VolkerStevi​n to reinstate the damaged green space to the right and left of Blackfriars Bridge in central London, where construction took place for the new super sewer.

Not only was it reinstated but the space was also upgraded.

Nine large multi stem Betula Utilis and three Carpinus Betulus were selected from Bruns Nursery in Germany for the project.

These trees were transported from Germany to the Volker depot on the river at Silvertown. They were then transported down the river by barge to the Blackfriars pier and lifted by crane from the barge into the prepared pits.

 A couple of hundred shrubs supplied by Palmstead nurseries in Kent were installed into the new granite planters with the trees.

 

Grovelands Park project for Enfield Council

PGSD Limited has been working on a project in Grovelands Park, Broadwalk, North London for Enfield Council. The project comprised fencing and planting works.

The area in question is to the rear of houses, situated at the end of the park, as pictured above. The area had become run down and attracted littering. To alleviate this, PGSD fenced an area off using four foot high chestnut fencing and round posts, approximately 4.5 metres along a concrete retaining wall, eight metres out along the path and 4.5 metres back into the area.

We repaired the fence at the end of the area and supplied and planted 10 square metres by the retaining wall and the path near the bridge with three shrubs per square metre, using a 50-50 mix of Hawthorne and Holly. Originally a private estate, Grovelands Park is Grade II listed on the Register of Historic Parks and Gardens.


The first image is courtesy of Google Maps©

 

Wandsworth Roundabout

Wandsworth Roundabout is a TFL (Transport For London) asset. For for the last 10 years, PGSD Limited has mown the wild grass six times per year and cleaned up once a year.

For a variety of reasons, the site was attracting litter. PGSD received an instruction through CVU London Highways Alliance (contracted to TFL) to completely clear the area, only leaving the trees. The project included the installation of new turf to create a park like area for local residents to use.

Alan Davidson from TFL had a vision of bringing the area back as a pleasant place to be which could be enjoyed by the public.

The photograph shows the work in progress.

 

Trinity Road Wandsworth

Trinity Road, Wandsworth, London - PGSD project
Trinity Road, Wandsworth, London – PGSD project

At Trinity Road Wandsworth, the central area of 2,800 square metres was originally split into two areas. The lower area of comprised formal soft landscaping. This had been installed in 2008 and the upper section of remains as woodland.

The area had gradually degraded over the course of a few years. It had deteriorated into a poor state that was not very pleasing to the eye. Councillor Clay noticed this and liaised with TFL (Transport for London) about the matter.

Subsequently, the area was identified by Alan Davidson of TFL (Transport for London) for a major upgrade. TFL handed the project over to the Better Streets design team CVU. In turn, they asked PGSD to design and install the project.

PGSD General Manager Alan Wright commented: “Londoners and visitors alike prefer to see well maintained landscaping, as they move around the capital. It is a pleasure to see the difference that this type of project can make to an area.”

On completion of the project, PGSD received praise from CVU ,TFL and Councillor Clay, who had originally raised this issue as a matter of concern.

Feltham Arenas: former sports ground and football club returned to public use

Feltham project - PGSD
Feltham Arenas prior to works

Feltham Arenas was a former sports ground and football club, where Mo Farrah made his first steps to Olympic glory. The site had fallen into disrepair and an existing football stadium and associated buildings had been demolished and then covered over with tipped material. The site was then used as a fly tipping location for several years. The surface of the four hectare site was littered with broken glass, builders rubble, concrete and reinforcing bar.

The site had been reviewed by consultants who had identified an area of Japanese Knotweed. The banks around the area were potentially unstable at their existing gradient. They recommended that the banks around the site were re-profiled to a 1 in 3 gradient.

Originally, PGSD was asked to import topsoil to 150mm deep. However, we suggested that we would screen the existing soil on site and ameliorate it for reuse. This was done using two large trommell screeners. This resulted in a reduction in both price and vehicle movements.

The existing surface of the area and banks was cleared of vegetation, including the Japanese Knotweed.

The surface material and the excavations on the bank were then processed in the screeners. The rubble from the screening was buried in lines to improve the drainage on the site. The soil was then spread over the site, ready for seeding.

Two types of seed were used: amenity grass seed for the impromptu football pitches and a heathland wild grass mix for the remaining areas. The amenity areas were fertilized, as an analysis of the soil showed that it was nutrient poor.

Technical details

*  Site set up including 92 Heras panels.
*  Welfare facilities including site office and 24 hour security.
*  Bank and slope re-profiling. All spoil removed from slopes and evenly distributed over the remainder of the site.
*  Grading and leveling of the surface. Finished level included a centre camber, to aid water run off.
*  Cultivation and removal of deleterious materials i.e. stone burying – ensuring all stones over 40mm were buried and not visible on the surface.
*  Supply and sow 5500sq.m grass seed BSH RE11 perennial wild flower mix at 2 – 5 grams per square metre.
*  Treatment of Japanese Knotweed. Treatment with translocated herbicide, stem injection, excavation and wrapping.
*  Asbestos monitoring and removal.
*  Site maintained for a period of 12 months from project completion, with grass being mown to amenity standard.

The site has been returned to public use and local residents are able to use the area. PGSD achieved a reduction in price and vehicle movements through screening and amelioration of the top soil.