Wambo Coal AEMR 2011-2012 - Peabody Energy

2011-2012 AEMR
The purpose of the environmental consultancy
services is to validate the soil in the walls and base
of the tank pit excavation and to classify the
excavated soil for offsite disposal in accordance
with the Department of Environment and Climate
Change NSW guidelines (Waste Classification
Guidelines, Part 1: Classifying Waste, NSW DECC,
2008).
Validation of the UST excavation and waste
classification sampling of the stockpiled material
was undertaken on 5 July 2011. All concentrations
of the soil samples collected from the pit walls and
base as well as from underneath the bowser and
the fuel line were below the SAC for TPH, BTEX,
PAH and Lead. Therefore, the tank pit excavation is
deemed suitable to remain on a site for continued
commercial/industrial land use in accordance with
the NSW EPA “Contaminated Sites: Guidelines for
Assessing Service Station Sites” (1994).
upgraded last reporting period to conform with the
Explosive Act 2003. The focus has been on
increased security.
2.9.3 Material Safety Data Sheets
All materials stored on site have appropriate
Material Safety Data Sheets (MSDS). No chemical
or hazardous material is permitted on site unless the
mine has a copy of the appropriate MSDS or, in the
case of a new product; it is accompanied by a
MSDS. ChemAlert is used to maintain an electronic
register of chemicals on site. The Open Cut
contractor and other on site contractors are
responsible for the maintenance of a MSDS register
for their areas.
All concentrations of the soil samples collected from
the excavated material stockpile were below the
SAC for TPH, BTEX, PAH and Lead. Therefore, the
stockpiled material was classified as “General Solid”
waste in accordance with the NSW DECC (2008)
waste classification guidelines.
Former location of underground storage tank
All bulk fuel, oil and grease storage areas are
regularly inspected as part of the internal monthly
environmental inspection schedule.
As discussed there are a number of oily water
separator systems located across the site. For more
information please refer to Section 2.6.3.
2.9.2 Explosive Management
In addition to priming and initiating explosives, up
to 120 tonnes of ammonium nitrate prill is stored in
tippers on site as well as 50 tonnes of Ammonium
Nitrate Emulsion (ANE) for the Open Cut
operations. The ammonium nitrate is loaded
into mobile processing units (MPU) at a reload
facility situated in the mine. The MPU is then driven
onto bench where all the ingredients are mixed
entering into a blast holes. The ammonium nitrate
storage area and the magazine areas were
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