Phase 2 Site Investigation Management Plan : Landfills
KEY AND POTENTIAL ISSUES / POTENTIAL CONTAMINANTS OF CONCERN / ASSESSMENT CRITERIA / KEY INVESTIGATION CONSIDERATIONS
Soil / n Heavy Metals / n 1. NEPM 1999 (soil) / n Establish location of sensitive receptors from desk study
n Landfill wastes can impact soil quality / n Total Petroleum Hydrocarbons / (TPH) / n 2. ANZECC 2000 (water) / n Review desk study to identify boundaries of landfill
n Contaminant transfer by direct / indirect contact / n Benzene, Toluene; Ethyl Benzene, Xylene / (BTEX) / n 3. EPA 1994 (hydrocarbons) / n Review desk study to identify depth and construction
n Contaminant transfer by ingestion / inhalation / n Polynuclear Aromatic Hydrocarbons / (PAH) / Dutch Intervention or USEPA criteria may be used in the absence of any published and approved Australian guidelines / n Consider GPR to target investigation
Groundwater / n Phenols / n Ensure investigation extends below the depth of landfill
n Migrating leachate can impact groundwater quality / n Organochlorine Pesticides / (OCP) / n Obtain regular soil samples across the depth profile
n Contaminant transfer by direct / indirect contact / n Organophosphate Pesticides / (OPP) / MANAGEMENT CONSIDERATIONS / n Use of instrumentation to monitor air quality
n Contaminant transfer by ingestion / inhalation / n Polychlorinated Biphenyls / (PCB) / n Operate a permit to work system / n Use of instrumentation to monitor explosive atmospheres
Surface Water / n Volatile Organic Compounds
n Semi Volatile Organic Compounds / (VOC)
(SVOC) / n Documentation of past, present and proposed activities / n Use of intrinsically safe equipment during drilling and monitoring works to minimise risk of explosion.
n Migrating leachate can impact surface water quality / n Methane, Carbon Dioxide, Carbon Monoxide
n Ammonia / n Legal framework
n Best practice management techniques / n Ensure installations target representative horizons within the waste so that water and gas results at varying levels within the fill can be considered.
n Surface run off can increase sediment loadings / n Nitrogen, Nitrate, Nitrite / n Slope and capping details
n Contaminant transfer by direct / indirect contact / n Suspended Solids / n Storm water management
n Contaminant transfer by ingestion / inhalation / n Total Phosphorous / n Groundwater management
Air / n Orthophosphate / n Gas management
n Landfill gas may be corrosive, toxic, odorous / n Anions and Cations / n Leachate management
n Landfill gas may be explosive
n Landfill gas contributes to the ‘greenhouse effect’ / n Asbestos
n Radiological contaminants
n Explosives / n Nuisance (pest, vermin, weed) management
n Contaminants may migrate in the form of dust / n Pathogens / n Fire prevention
n Contaminant transfer by inhalation / n Contaminant Monitoring
Document Control: / Version 1.0
Issued: / SMEC, Oct 2007
Phase 2 Site Investigation Management Plan : Landfills
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