Environment

The site of Harbour Way consists of a variety of diverse habitats, including wetlands, ponds and woodlands.

snakePre-construction ecological suveys were undetaken in 2010, assessing the wildlife habitats, including designated protected sites and flora (vegetation) and fauna (animal species) including statutorily protected species, such as amphibians, breeding birds (including barn owls), otters and bats.

Otters: To the south east of the scheme there was a possibility of otters crossing the scheme close to the watercourses.  Otter fencing and mammal underpasses were included in the design to provide safe access along watercourses.

Reptiles: In June 2010, nearly 4.5km of reptile fencing was erected throughout the site.  Two thousand artificial reptile refugia made from sheets of roofing felt were placed throughout the site which caught 1800 reptiles consisting of slow worms, grass snakes and common lizzards; all were removed to two new receptor sites.Slow worm

Small Blue Butterfly:  A range of invertebrate species inhabited grassland areas within the scheme.  Man made ground was naturally colonised by species-rich grassland and scrub providing habitats from the Small Blue Butterfly, which is a UK BAP Species of Conservation Concern.  These species breed in grassland where its sole food is Kidney vetch.  Areas of grassland identified as Small Blue Butterfly habitat were translocated before construction with replacement habitats provided.  Areas of retained grassland were protected during construction to minimise disturbance to habitat.

new ffrwydFfrwyd Wyllt Culvert:  Extensive culvert works were carried out to improve the local weather environment.  A relief channel was created to ensure that, apart from the most extreme of floods, all waters can be conveyed safely to the dock.  A new grille, designed to EA recommendations, has improved water flow, access to cleaning and allows fish to flow through more easily. 

Remediation:  Harbour Way has been constructed through an area historically occupied by works associated with steel manufacturing.  Extensive ground investigations during 2011 and 2012 identified hotspots of soils heavily contaminated with hydrocarbons.  The remediation strategy involved the phased excavation of shallow soils (<4.5m deep) over several areas, including the historical site of the coke washery and blast furnace.  Excavated materials were stabilised to enable re-use in accordance with CL:AIRE Code of Practice.

Significant environmental management required during remediation included:

  • Air quality monitoring
  • Odour suppressants
  • Treatment and management of contaminates groundwater to avoid disposal off site
VN:F [1.9.22_1171]
Rate this post...
Rating: 3.6/5 (7 votes cast)
Environment, 3.6 out of 5 based on 7 ratings