Phase 2 Site Investigation Management Plan : Engine Repair or Maintenance Areas
KEY AND POTENTIAL ISSUES
Soil

Fuel spillage/leakage can impact soil quality

Contaminant transfer by direct / indirect contact

Contaminant transfer by ingestion / inhalation
POTENTIAL CONTAMINANTS OF CONCERN

ASSESSMENT CRITERIA

Heavy Metals (predominantly lead)
1. NEPM 1999 (soil)
KEY INVESTIGATION CONSIDERATIONS

Locate all tanks, pits, sumps and pipelines (above and
below ground) by a combination of desk based review,
walkover survey and GPR.

Total Petroleum Hydrocarbons
(TPH)

2. ANZECC 2000 (water)

Review spill and leak management controls by desk based
review and interview with site personnel
Groundwater

Benzene,
Toluene;
Ethyl
Benzene,
(BTEX)

3. EPA 1994 (hydrocarbons)

Xylene

Fuel spillage/leakage can impact groundwater quality

Contaminant transfer by direct / indirect contact

Contaminant transfer by ingestion / inhalation

Review secondary containment and impact protection by
means of a walkover survey
Polynuclear Aromatic Hydrocarbons
(PAH)
Dutch Intervention or USEPA criteria may

be used in the absence of any published
Identify potential migration pathways (e.g. service corridors)
by a combination of desk study and walkover survey.
and approved Australian guidelines

MANAGEMENT CONSIDERATIONS
Phenols

Identify potential receptors to determine sampling media,
location and depth
Surface Water

Fuel spillage/leakage can impact surface water quality

Surface run off can impact drainage systems

Contaminant transfer by direct / indirect contact

Contaminant transfer by ingestion / inhalation
Air

Fuel vapour may be corrosive, toxic, odorous

Fuel vapour gas may be explosive

Contaminants may migrate in the form of dust

Contaminant transfer by inhalation
(VOC)

Operate a permit to work system

Documentation of past, present and


Semi Volatile Organic Compounds
pH
(indicator
products)
of
corrosion
control
(SVOC)

Legal framework

Best practice management techniques

Use of instrumentation to monitor
Installation of at least three groundwater monitoring wells to
determine water quality around the tanks and flow direction.

equipment).
Use of PID instrumentation to monitor air quality of samples
to aid scheduling.

explosive atmospheres to protect the
workforce (use of intrinsically safe
Ensure investigation extends below the depth of USTs,
sumps/pits with sampling of soil at regular intervals.
proposed activities


Volatile Organic Compounds
VOCs often not found in soil (low partitioning coefficient) but
vapour identified (high vapour pressure).

VOCs often found in groundwater.

Identify wash down / spray paint / corrosion treatment areas
by means of a desk based study and site walkover survey.