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