{
  "url": "https://openlegislation.uk/eu-directive-2009-31/annex-I/division-2",
  "json_url": "https://openlegislation.uk/eu-directive-2009-31/annex-I/division-2.json",
  "legislation": "eudr/2009/31",
  "legislation_title": "Directive 2009/31/EC of the European Parliament and of the Council of 23 April 2009 on the geological storage of carbon dioxide and amending Council Directive 85/337/EEC, European Parliament and Council Directives 2000/60/EC, 2001/80/EC, 2004/35/EC, 2006/12/EC, 2008/1/EC and Regulation (EC) No 1013/2006 (Text with EEA relevance)",
  "legislation_url": "https://openlegislation.uk/eu-directive-2009-31",
  "path": "annex/I/division/2",
  "kind": "division",
  "number": "Step 2:",
  "heading": "Building the three-dimensional static geological earth model",
  "text": "Using the data collected in Step 1, a three-dimensional static geological earth model, or a set of such models, of the candidate storage complex, including the caprock and the hydraulically connected areas and fluids shall be built using computer reservoir simulators. The static geological earth model(s) shall characterise the complex in terms of:\n(a) geological structure of the physical trap;\n(b) geomechanical, geochemical and flow properties of the reservoir overburden (caprock, seals, porous and permeable horizons) and surrounding formations;\n(c) fracture system characterisation and presence of any human-made pathways;\n(d) areal and vertical extent of the storage complex;\n(e) pore space volume (including porosity distribution);\n(f) baseline fluid distribution;\n(g) any other relevant characteristics.\nThe uncertainty associated with each of the parameters used to build the model shall be assessed by developing a range of scenarios for each parameter and calculating the appropriate confidence limits. Any uncertainty associated with the model itself shall also be assessed.",
  "extent": "E+W+S+N.I.",
  "status": null,
  "version": "current",
  "annotations": [],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/eudr/2009/31/annex/I/division/2",
    "retrieved_at": "2026-11-01T15:22:13.911115+00:00"
  },
  "licence": "Open Government Licence v3.0",
  "licence_url": "https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/",
  "attribution": "Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives."
}