Application of a Human Health Risk Assessment Software to Support Revitalisation Decisions at Post-industrial Sites E.Wcislo, J.Dlugosz, M.Korcz Institute.

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Presentation transcript:

Application of a Human Health Risk Assessment Software to Support Revitalisation Decisions at Post-industrial Sites E.Wcislo, J.Dlugosz, M.Korcz Institute for Ecology of Industrial Areas, Katowice, Poland NATO/CCMS Pilot Study Meeting Prevention and Remediation In Selected Industrial Sectors Ottawa, Canada, June 12-15, 2005

EC 5 th Framework Programme for Research, Technical Development and Demonstration Activities Energy, Environment and Sustainable Development Call identifier: EESD-ENV-2002-NAS Project No EKV4-CT (NORISC) Project Co-ordinator – Dr. Barbara Möhlendick, City of Cologne (CGN), Office for European Affairs, Cologne, Germany NORISC project – Network Oriented Risk-assessment by In-situ Screening of Contaminated sites

 combine and integrate new and existing investigation methods, especially innovative in-situ and on-site techniques  provide a standard guideline for site characterisation in the form of a decision support software system (DSS) NORISC objectives

 demonstrate the effectiveness of this investigation approach and developed DSS by conducting field tests  integrate site investigation with general contaminated site management that includes data management, site assessment, clean-up targeting and development of revitalisation strategy NORISC objectives

 one of the NORISC DSS components  a tool for site assessors to support conducting site-specific risk assessment in post-industrial sites NORISC Human Health Risk Assessment (HRA) software

 for generating information on the level and spatial distribution of human health risks at contaminated sites  for setting up preliminary Health-Based Remedial Goals (HBRGs)/Risk-Based Concentrations (RBCs) NORISC - HRA software

 based on US EPA site-specific risk assessment procedures  proposed to be used when national soil and groundwater limit values are exceeded  serves as a link between site investigation and remediation/revitalisation decision-making

HRA process as an element of the strategy for the revitalisation/remediation of contaminated sites

Site-specific human health risk assessment

Exposure pathway Land use scenario ResidentialIndustrial/CommercialRecreational Surface soil Sub- surface soil Ground -water Surface soil Sub- surface soil Ground -water Surface soil Sub- surface soil Ground -water Incidental soil and dust ingestion  Dermal contact with soil  Inhalation of fugitive dusts  Inhalation of volatiles outdoors  Ingestion of groundwater used as a tap water  Dermal contact while showering or bathing  Inhalation of volatiles from groundwater during household use  Land use categories/Exposure pathways

Default exposure parameters

 Non-carcinogenic effects - Hazard Quotient HQ = CDI/RfD  Carcinogenic effects Cancer Risk = CDI x CSF  Summing Hazard Quotients and Cancer Risks across all chemicals and pathways (Hazard Index, Total Hazard Index, Cancer Risks, Total Cancer Risk) Risk characterisation

Calculating HQs, HIs and Cancer Risks as well as Total HI and Total Cancer Risk for relevant receptors (child, adult) depending on land use category: - for each sampling point concerning soil - as a site value for water-bearing horizon concerning groundwater (if groundwater is planned to be used by residents)

Default Target Risk levels Target Hazard Quotient (HQ)/ Hazard Index (HI) = 1 Target Cancer Risk = 1E-06

For contaminants with HQs and Cancer Risks exceeding Target Risk levels  Oral/Dermal and inhalation RBCs for carcinogenic and non-carcinogenic substances  Selecting the lowest RBC value as a preliminary remedial goal Development of Risk-Based Concentrations (RBCs)

C - Chemical concentration in soil or groundwater RBC - Risk-Based Concentration (oral/dermal or inhalation) Method based on site-specific exposure data Development of Risk-Based Concentrations (RBCs)

Visualisation of HRA results (only for soil)  Presentation of HRA results for each soil sampling point  Delineation of zones Risk zones - Risk zones with Total Cancer Risks and Total HIs below and above Target Risk levels Remedial zones - Remedial zones with contaminant concentrations exceeding the calculated RBCs

Risk characterisation outputs - an example Visualisation of HRA results

HRA software module report Summary ofHRA outputs - an example Industrial scenario Cancer risk zone (Total CR = 6E-05) Residential scenario Cancer risk zone (Total CR = 2E-04)

Analysis of RBC values - an example Visualisation of HRA results

Application of HRA software NORISC test sites  Balassagyarmat site, Hungary - former petroleum filling station  Massa site, Italy - former chemical factory, manufactured agrochemical products

Massa test site AGRICOLTURA S.p.a.i.l. site; 15 ha industrial area of Avenza-Carrara; north-western part of Tuscany

Massa test site Aerial photo; investigated area (1.2 ha) marked in yellow

Massa test site

Manganese Nickel Lead Zinc Aldrin DDT Arsenic Chromium Cobalt Copper Mercury Chemicals of Potential Concern

Massa test site – HRA results 10 non-cancer risk zones (total HIs > 1) 1 cancer risk zone (total CR > 1E-06)

Massa test site – HRA results Non-cancer risk zones

Massa test site – HRA results Cancer risk zone

Massa test site – HRA results Remedial zone - Aldrin

Massa test site – HRA results Remedial zone - Cobalt

Massa test site – HRA results Remedial zone - DDT

Massa test site – HRA results Remedial zone - Manganese

Massa test site – HRA results Remedial zone – Arsenic (dominant substance)

Application of the HRA results  for designing and conducting remediation/revitalisation of post-industrial sites  for setting up remedial/revitalisation options  for facilitating other risk management decisions at the post-industrial sites (e.g., in city planning – considering different land use options)