Scottish Contaminated Land Forum 8 th September 2011

Transcription

1 Scottish Contaminated Land Forum 8 th September 2011

2 Philip Norville Business Development Manager DEC UK and Ireland

3 Site location - Chesterfield

4 Overall view of the 98 hectare site

5 Operational Produced 18M Tonnes Employed 800 staff 98 hectare site Licensed Waste Facility History Hunloke and Avenue Collieries Iron and Lime Works Coking Plant and Chemical Works Undoubtedly one of the finest in the world Gas Journal 1956

6 Main Contamination Areas Contaminants of Concern Organics PAH S Phenols DRO s PRO s BTEX Cyanide Thiocyanate Ammonia Metals Arsenic Nickel Cadmium Chromium Mercury

7 A Diagrammatic Conceptual Model A Off Site SW Plant Area High Level Stocking Area Direct Contact: Inhalation / ingestion Waste Tip inc. Lagoon 2 River Rother and Flood Plain Wind blown particulates from exposed soils & during disturbance - onto third party land and general public A NE Legend Source Pathway Metal Contamination Organic Contamination Inorganic Contamination Leachables A Human Health Structures / Services Water Table Aggressive attack on services / foundations Vapours Lagoon 2 River Rother Made Ground Alluvium Coal Measures A Coal Measures Groundwater Flow Leaching of contaminants migration into controlled waters t. SCALE Y. TEMPL A DATE APPROVED JTS

8 Main Contamination Areas The Criteria Controlled waters criteria 4 areas (Consim Model) Within 100m of river Within 100m to 200m of river Away from river Development Area Human health criteria 2 areas (CLEA model) Within 1m of surface Below 1m from surface Total of 6 re-use criteria Away from river Public open space Development Area Within 200m of river

9 Main Contamination Areas Waste Tip Lagoons River

10 Hydrocarbon on the river

11 Free product on perched water

12 Concrete structures to be removed

13 Project Overview The final project includes - 2,200,000m3 of earthworks - 250,000 m3 of complex sorting - 50,000 m3 of soil washing - 75,000m3 of bioremediation - 300,000 m3 of thermal desorption - 250,000 m3 of soil manufacture Construction of a substantial water treatment plant Relocation of 6,000 newts, 50 snakes, 250 watervoles In order to clean up the River Rother and shallow groundwater and allow the construction of - 28 hectares of development land - 5 hectares of sports pitches - 70 hectares of nature reserve Total project cost approx. 172,000,000 ( 85, VSD)

14 General earthworks and backfilling

15 Excavation of the Waste Tip

16 Aerial View of the Waste Tip Processing Plant

17 Waste Tip Processing

18 Picking station

19 Discard bins

20 Output stockpiles

21 Timber stockpile from tip

22 Waste tip processing plant

23 Soil output bins

24 Bio-Remediation

25 Thermal Treatment Plant

26 Off-gas ducting to feed carbon filters

27 Excavation of Lagoon 4 sediments

28 Loading into haulage trucks

29 Delivery to mixing area

30 Discharge into Storage pit

31 Mixing Pit Filled With Lagoon 4 Sludges

32 Loading into the plant

33 24/7 operation of thermal treatment plant

34 Treated Material

35 Water Treatment Plant (inc. Bioreactor)

36 Considerate Contracting Noise Disruption Dust Odour

37 Sustainability All contaminated soils recovered on site and reused wherever possible (>98% PTD) Recycle heat and water Thermal treatment carbon footprint assessment 100% green electricity Bioremediation inc. local green waste 28ha Development Platform & green PoS

38 The Delivery Partnership & communications 3 Government Departments Communities and Local Government DTi HM Treasury 3 Government Organisations emda Homes and Communities Agency The Land Restoration Trust 3 Local Government Organisations North-East Derbyshire District Council Chesterfield District Council Derbyshire County Council 4 Regulators Environment Agency (Controlled Waters) North-East Derbyshire District Council (Environmental Health) Natural England (Ecology) Primary Health Care Trust 1 Charity Derbyshire Wildlife Trust The Community 14 Partners and the Community Plus 6 consultants and 3 contractors (VSD Avenue)

39 After Use Proposal

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41 Come and see the project Come and see the project for yourselves!!