PORTS CORPORATION OF QUEENSLAND ABBOT POINT COAL TERMINAL

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					     PORTS CORPORATION OF QUEENSLAND




         ABBOT POINT COAL TERMINAL

             EXPANSION STAGE 3




PREDICTED AVERAGE TERMINAL DUST EMISSIONS AT
  THROUGHPUT LEVELS OF 15MTPA AND 50MTPA




                                  Date: 5 JANUARY 2006

                             DENIS POUT ENGINEERING
                                     In association with
                              INTROSPEC CONSULTING

                                    50 Carrington Road
                                   Castle Hill NSW 2154
PREDICTED AVERAGE TERMINAL DUST EMISSIONS AT
   THROUGHPUT LEVELS OF 15MTPA AND 50MTPA


 TABLE OF CONTENTS

                                                                Page

 SECTION 1:    INTRODUCTION                                     3



 SECTION 2:    CHARACTERISTICS OF ABBOT POINT COAL TYPES         5

               2.1 Dustiness Moisture Relationship
               2.2 Dust Lift-off Tests



 SECTION 3:    OBSERVATION OF DUST LIFT-OFF FACTORS             10



 SECTION 4:    MAJOR TERMINAL EMISSION SOURCES                  11



 SECTION 5:    ESTIMATED MAJOR TERMINAL SOURCE EMISSIONS        12



 ANNEXURE A:    DUST MANAGEMENT PLANT REQUIREMENTS              15


 ANNEXURE B:    MOBILE TANKER APPLICATION OF VENEER TREATMENT   18




 REPORT PREPARED BY: JOHN PLANNER


 DATE: 5 JANUARY 2006




                                                                       2
1 INTRODUCTION
Ports Corporation of Queensland is investigating the viability of expanding the capacity of
the Abbot Point Coal Terminal (Terminal) from a present capacity of 15 Mtpa to a Stage
2 capacity of 25 Mtpa, to be followed by a Stage 3 capacity of 50Mtpa. To determine the
effect of the proposed expansion on air quality, air dispersion modelling is to be
conducted at Terminal capacities of 15 Mtpa and 50 Mtpa.

WBM Oceanics Australia (WBM) commissioned Denis Pout Engineering (DPE) to
prepare estimates of dust emission rates from major elements of the Terminal, and to
provide other advice and input for a review of predicted air quality emissions to be
conducted by Pacific Air and Environment (PAE).

The Terminal is located at Abbot Point, 25km North West of Bowen on the Central
Queensland Coast.

The Terminal’s potential dust sources were identified, and grouped in functional areas.
The largest sources were identified as wind lift-off from coal stockpiles, stacking to
stockpiles and reclaiming from stockpiles.

Other sources were identified and grouped as rail receival, inloading conveyors, out
loading conveyors with associated surge bins and transfer stations, ship loaders, and
other site activities.

The derivation of the estimates was based on data, available to PCQ, from similar coal
terminal operations in the Hay Point area, which experiences very similar climatic
conditions to the Abbot Point area.

The Port of Hay Point, which is located just south of Mackay in Central Queensland,
incorporates the Dalrymple Bay Coal Terminal (DBCT) and the Hay Point Coal Terminal
(HPCT) which are located in close proximity to each other.

The Abbot Point area has only a limited number of dust deposition gauges surrounding
the Terminal due to an absence of residential development in proximity. A review of the
need for additional future long term deposition gauges around the Terminal site is
recommended.

By comparison, the Hay Point area has a large number of dust deposition gauges at
strategically selected locations, as shown in Figure 1.1. This monitoring system, which
has now been operating for over ten years, has produced very extensive data which is
available to PCQ, and has therefore been utilised for this study.

The relationship between moisture content and dustiness was determined for the eight
major coal types in accordance with Australian Standard AS 4152.6 – 2000. Wind tunnel
dust lift-off tests were also conducted on each coal type to determine the relative dust lift-
off from coal stockpiles sprayed with water and those not sprayed with water. The tests
were conducted under simulated high wind speed, high temperature conditions.




                                                                                     3
Figure 1.1 Port of Hay Point Environmental Monitoring Locations




                                                                  4
2 CHARACTERISTICS OF ABBOT POINT COAL TYPES
2.1 Dustiness Moisture Relationship
Samples were obtained of eight existing coal types shipped from the Terminal, to
determine the relationship between dustiness and moisture content in accordance with
Australian Standard AS 4152.6-2000, Coal Preparation Part 6: Determination of
dust/moisture relationship for coal.

The Standard defines a test procedure to determine the dustiness/moisture relationship
for any coal type. A series of tests are conducted at different moisture levels to enable a
plot of dustiness versus moisture content on a logarithmic graph to show the relationship
and to determine the theoretical dustiness extinction moisture level (DEM)

The dust extinction moisture level (DEM) for the coal types was determined as:

Collinsville coal types;
                  CCC A5     5.0%
                  CCC B5     5.1%
                  CLV B3     6.1%
                  CUW B1     7.0%

Newlands coal types;
               NCP B2        6.7%
               NCP B4        7.0%

Macarthur coal types;
                CCP E        6.4%
                MVC P        5.9%


To minimise dust lift-off, the moisture content should not fall below the DEM level at any
stage of Terminal operations between rail receival and ship loading. As there will be
some loss of moisture during handling operations, at a more severe rate during high
temperature conditions, it will be necessary to implement a procedure which achieves an
optimum moisture level for each coal type at rail receival to ensure that the moisture level
never falls below DEM, to effectively minimise dust emissions during Terminal handling
operations.

The optimum moisture level for each coal type at rail receival will therefore need to be
set at DEM plus an additional percentage which allows for estimated moisture loss
during handling and residence time. This should be determined for each coal type, taking
into account factors including;

  (a) Percentage of fines
  (b) Moisture loss due to evaporation
  (c) Moisture loss due to seepage
  (d) Steepness of the dustiness/moisture line of best fit




                                                                                    5
2.2 Dust Lift-off Tests
A test program has also been conducted on each coal type to determine the likely dust
lift-off under different conditions of wind speed, temperature and moisture level.

The test results have been used to determine the estimated coal dust emission from the
Terminal, by comparison with data from the coal terminals in the Hay Point area. The
emission estimated by this method was compared with estimates determined from
historical Abbot Point dust deposition data, before being adopted as input for dispersion
modelling.

The test data was also used to refine the previously determined estimates of percentage
dust emission from the major sources within the Terminal.

A further wind tunnel test program has been used to evaluate the effect of alternative
surface treatments to minimise dust lift-off from stockpile surfaces. The alternatives
compared with nil treatment were water spray applied at two hourly intervals at a rate of
1 litre per square metre, and chemical veneer treatment applied once.

The chemical veneer treatment involved a once applied solution sprayed on the coal
surface at a rate of 1 litre per square metre. The water based solution contained 2%
chemical. The chemical was selected following a test program involving tests on a range
of chemicals over a period of two years, and on advice that the product has no adverse
health effects, and no detrimental effect on coking or steaming properties of the coal
exports.

The solution can be applied to full scale operating stockpiles by use of a mobile spray
tanker, a practice that has been verified during trials at other port terminals.


The test results are shown in Tables 2.1 to 2.8.

Table 2.1 Dust lift-off from Abbot Point Coal types CCC A5 when exposed to a wind speed of 8m/s
or 10m/s, following various types of surface treatment

                                    Coal Type CCC A5
                Treatment           Lift-Off speed (m/s)   Dust Lift-Off (g)
                nil                        8                       1.3
                water 2 hourly             8                       0.4
                veneer                     8                       0.3

                nil                        10                      9.5
                water 2 hourly             10                      0.9
                veneer                     10                      0.5




                                                                                      6
Table 2.2 Dust lift-off from Abbot Point Coal types CCC B5 when exposed to a wind speed of 8m/s
or 10m/s, following various types of surface treatment

                                     Coal Type CCC B5
               Treatment             Lift-Off speed (m/s)     Dust Lift-Off (g)
               nil                            8                       1.7
               water 2 hourly                 8                       0.2
               veneer                         8                       0.8

               nil                          10                        1.4
               water 2 hourly               10                        0.5
               veneer                       10                        1.4


Table 2.3 Dust lift-off from Abbot Point Coal types CCP E when exposed to a wind speed of 8m/s or
10m/s, following various types of surface treatment

                                   Coal Type CCP E
           Treatment               Lift-Off speed (m/s)     Dust Lift-Off (g)
              nil                           8                       1.2
              water 2 hourly                8                       3.6
              veneer                        8                       0.2

             nil                           10                       11.7
             water 2 hourly                10                       3.8
             veneer                        10                       0



Table 2.4 Dust lift-off from Abbot Point Coal types CLV B3 when exposed to a wind speed of 8m/s
or 10m/s, following various types of surface treatment

                                    Coal Type CLV B3
                Treatment           Lift-Off speed (m/s)    Dust Lift-Off (g)
                nil                          8                      0.1
                water 2 hourly               8                      0.2
                veneer                       8                      0.6

                nil                         10                      20
                water 2 hourly              10                      0.2
                veneer                      10                      0.6




                                                                                        7
Table 2.5 Dust lift-off from Abbot Point Coal types CUW B1 when exposed to a wind speed of 8m/s
or 10m/s, following various types of surface treatment

                                Coal Type CUW B1
               Treatment        Lift-Off speed (m/s)   Dust Lift-Off (g)
               nil                       8                     0
               water 2 hourly            8                     0.3
               veneer                    8                     0.1

              nil                       10                     2.4
              water 2 hourly            10                     1.2
              veneer                    10                     0.6



Table 2.6 Dust lift-off from Abbot Point Coal types MVC P when exposed to a wind speed of 8m/s or
10m/s, following various types of surface treatment

                                Coal Type MVC P
                Treatment       Lift-Off speed (m/s)   Dust Lift-Off (g)
            nil                          8                     0.2
            water 2 hourly               8                     0.4
            veneer                       8                     0.2

            nil                        10                      4.5
            water 2 hourly             10                      0.7
            veneer                     10                      0.2



Table 2.7 Dust lift-off from Abbot Point Coal types NCP B2 when exposed to a wind speed of 8m/s
or 10m/s, following various types of surface treatment

                                Coal Type NCP B2
               Treatment        Lift-Off speed (m/s)   Dust Lift-Off (g)
            nil                          8                     0.25
            water 2 hourly               8                     0.86
            veneer                       8                     0.3

            nil                         10                     2.42
            water 2 hourly              10                     2.26
            veneer                      10                     1.8




                                                                                        8
Table 2.8 Dust lift-off from Abbot Point Coal types NCP B4 when exposed to a wind speed of 8m/s
or 10m/s, following various types of surface treatment

                                   Coal Type NCP B4
           Treatment               Lift-Off speed (m/s) Dust Lift-Off (g)
           nil                              8                   0
           water 2 hourly                   8                   0.6
           veneer                           8                   0.2

           nil                             10                   1.4
           water 2 hourly                  10                   0.6
           veneer                          10                   0.5




                                                                                      9
3 OBSERVATION OF DUST LIFT-OFF FACTORS

It was observed that, when the surface receives no treatment, there is a large increase in
dust lift-off for seven of the eight coal types tested, as wind speed increases from 8m/s to
10m/s.

At a wind speed of 10m/s, a reduction in dust lift-off was observed for all coal types when
the surface was treated with either water spray at two hour intervals or chemical veneer
treatment applied once.

For six out of eight coal types exposed to a wind speed of 10m/s, a greater reduction in
dust lift-off was recorded when chemical veneer treatment was applied once to the
surface, than when water spray was applied to the surface at two hour intervals.

Because there are no current plans to install a stockpile spray system in the Stage 2/3
Expansion, a review of the relationship between dust lift-off recorded in tests for
untreated coal surfaces and those sprayed with water at regular intervals has been
conducted for the eight Abbot Point coal types.

The results for dust lift-off for samples sprayed at two hour intervals and samples with nil
treatment for the coal types were averaged, for lift-off speeds of 8 m/s or 10 m/s. It was
found that the average ratio for lift-off speeds of 8 m/s was approximately 1.70
(specifically, the dust lift-off from samples with nil treatment was 1.7 times greater than
from those samples with the two hourly water treatment), and the average ratio for lift-off
speeds of 10 m/s was approximately 16.46.

The frequency of wind speeds for the Abbot Point site were considered, and it was
determined that winds of speed 8 m/s occurred approximately 3 times as often as winds
of speed 10 m/s. The average ratios were weighted based on these frequencies, and it
was established that the final ratio between these weighted ratios was approximately
3.23.

It has been concluded that three times the dust lift-off was recorded at a range of wind
speeds between 8 and 10 m/s when no water spray was applied to the coal surface. The
average ratio of 2 for dust lift-off from untreated to water sprayed coal surfaces, as
suggested in the NPI Emission Estimation Technique Manual, has been upgraded to an
average ratio of 3.

A factor of 3 was therefore adopted to compare the dust lift-off from Abbot Point
untreated stockpile surfaces, with the surface of stockpiles in the Hay Point area, which
are subjected to regular water spray under conditions of wind speed ranging from 6 to 10
metres per second.

By taking an average of the dust lift-off results for the eight coal types, it is noted that at a
wind speed of 8m/s, and at 10m/s, the dust lift-off recorded when the surface was treated
with once applied veneer was half the dust lift-off recorded when the surface was
sprayed with one litre per square metre water at two hour intervals.




                                                                                       10
4    MAJOR TERMINAL EMISSION SOURCES

The following major Terminal emission sources have been adopted for use in modelling
air quality for the Abbot Point Coal Terminal;

Rail Receival - Rail receival building, hoppers, feeders etc to the discharge on inloading
conveyors. Also includes rail tracks in the immediate vicinity. No allowance is made for
dust lift-off from coal in rail wagons, which is considered to be a rail transport function.

Inloading Conveyors - The tail end of conveyors in rail receival to the discharge on
stockyard conveyors. Also includes the ground area in the vicinity.

Stacking - Includes operating stacking machines and the stockyard conveyors delivering
coal to stackers.

Reclaiming - Includes operating reclaiming machines and the stockyard conveyors
receiving coal from reclaimers.

Stockpile Lift-off - Includes coal dust lift-off from all stockpiled coal for cargoes under
construction, completed, or being despatched to ship. Also includes dust lift-off from
vacant areas within the stockyard boundaries.

Outloading Conveyors and Surge Bins - Includes all conveyors receiving coal from
stockyard conveyors and transferring outgoing coal to the tail end of shipping conveyors
on the berth structure. Also includes the ground area in the vicinity of the on ground
conveyors and the ground area in the immediate vicinity of the surge bin structures.

Shiploader - Includes all ship loaders, shipping conveyors, and associated
equipment mounted on the berth structure. Also includes the berth deck and associated
areas.

Other Site Activities - Includes site access roads, parking areas, buildings, motor
vehicles, wheel and track mounted equipment, and other support facilities within the
Terminal site. Operation of dozers to move coal from reserve to live storage is included
for existing Stage 1, but in Stages 2 and 3 all stockpiled coal will be accessible by
stackers and reclaimers.




                                                                                     11
5    ESTIMATED MAJOR TERMINAL SOURCE EMISSIONS

The Terminal’s potential dust sources have been grouped in the major functional sources
described in section 4. Estimated average source emission rates from the Terminal, in
grams per second, are provided at a current base throughput level of 15 Mtpa, and for
the Expanded Stage 3 with an estimated throughput of 50 Mtpa.

The derivation of the estimates was based on PCQ documentation, obtained from similar
coal terminal operations in the Hay Point area. This area experiences very similar
climatic conditions to the Abbot Point area.

The estimates have been validated on the basis of the dustiness/moisture relationship
tests and the wind tunnel tests conducted for current coal types shipped through the
Abbot Point Terminal, as shown in section 2.

The major source of dust lift-off from most coal terminals is from the stockpiles, even
when the surfaces are sprayed with water at regular intervals to replenish the reduction
in surface moisture content which occurs as a result of adverse temperature and wind
conditions

Because there are no current plans to install a stockpile spray system in the Stage 3
Expansion, due to limited water availability at Abbot Point, a factor of 3 was therefore
adopted to compare the dust lift-off from Abbot Point untreated stockpile surfaces, with
the surface of stockpiles in the Hay Point area, which are subjected to regular water
spray under conditions of wind speed ranging from 6 metres per second to 10 metres per
second, and higher under extreme conditions.

A review of the relative overall characteristics of coal types shipped through the Hay
Point terminals and Abbot Point indicated that, except for the use or non-use of stockpile
surface water spray, the dust lift-off from stockpiles will be related to the surface area.

The Abbot Point stockpile lift-off estimate for both the 15Mtpa Stage 1 case and the 50
Mtpa Stage 3 case has therefore been based on the relative stockpile surface areas
compared with the surface areas of the Hay Point terminals, multiplied by a factor of
three, to allow for non-use of stockpile water spray at Abbot Point.

Review of the current and proposed facilities at the Abbot Point and Hay Point terminals
indicates that the estimated dust lift-off from other major Terminal emission sources will
be proportional to relative terminal throughput. The estimates have therefore been based
on the assumption that dust management procedures, with the exception of stockpile
spray systems, will be similar at all terminals. Comments have been provided in
Annexure A.




                                                                                  12
The following table provides estimated average source emission rate from the Abbot
Point Coal Terminal at the current base throughput level of 15 Mtpa.

Table 5.1 Estimated average source emission rate from the Abbot Point Coal Terminal at the
current Stage 1 throughput level of 15 Mtpa.

                       Source                     Emissions (g/s)

       Rail receival                                      0.04
       Inloading conveyors                                0.13
       Stacking                                           0.55
       Reclaiming                                         0.85
       Stockpile lift-off                                 5.25
       Outloading conveyors and Surge B                   0.54
       Ship loader                                        0.18
       Other site activities, including ope               0.48
       of stockpile dozers
                    Total                                 8.02

The following table provides estimated average source emission rate from the Abbot
Point Coal Terminal at the proposed Stage 3 throughput level of 50 Mtpa.

Table 5.2 Estimated average source emission rate from the Abbot Point Coal Terminal at the
future Stage 3 throughput level of 50 Mtpa.


           Source                                   Emissions (g/s)

       Rail receival                                      0.13
       Inloading conveyors                                0.43
       Stacking                                           1.83
       Reclaiming                                         2.85
       Stockpile lift-off                                11.00
       Outloading conveyors and Surge B                   1.62
       Ship loader                                        0.49
       Other site activities,                             0.45
        NO stockpile dozers
              Total                                      18.80

In determining the estimated dust emission source levels for air quality dispersion
modelling for the Expanded Stage 3, it has been assumed that the dust management
design features, recommended following a site inspection of the Terminal, will be
incorporated in the expanded Terminal facilities. These design features are summarised
in Annexure A

It has also been assumed that the optimum moisture level for each coal type at rail
receival will be set at DEM plus an additional percentage which allows for estimated
moisture loss during handling and residence time.




                                                                                 13
Optimum moisture levels have been determined for all major coal types shipped through
the Dalrymple Bay Coal Terminal, which forms the basis for the Abbot Point air quality
modelling. It has been determined that the moisture content of the majority of coal
types received at both Hay Point terminals has been equal to, or greater than the
optimum moisture level.

It is therefore recommended that a review be conducted of the "as railed" moisture level
of all Abbot Point coal types, to ensure that the extrapolation of Hay Point dust emission
data to the Abbot Point scenario is valid.




                                                                                  14
ANNEXURE A

Dust Management Recommendations for Design of New Facilities and
Improvements to Existing Plant.

The following requirements are recommended for inclusion in the design of new facilities
and in some cases, improvements to existing plant, to minimise dust emission from the
expanded Abbot Point Coal Terminal. The recommendations were determined from an
inspection of the Terminal, discussions with the team responsible for design of expanded
facilities, and review of best practice at other Australian coal terminals.

Rail Receival
It is recommended that all coal should have a moisture content that is never less than the
DEM level for each coal type, from rail receival to loading to ship, to minimise Terminal
dust emission. It is recommended that an optimum moisture level be determined for each
coal type, to allow for loss of moisture due to evaporation and seepage. Allowance for
loss of stockpile surface moisture should be addressed in a separate manner, as shown
below under Stockpiles.

Ideally, the optimum moisture level should be achieved prior to despatch from the mine.
If this is not possible, it may be necessary to provide facilities at rail receival in the Stage
3 Expansion, to add water in a controlled manner to achieve optimum moisture level.
Installation of moisture analysers to effectively control water addition could be
considered.

If dust emission from the rail receival building can be minimised by coal moisture control,
the installation of a dust exhaust system should not be necessary, and continued
ventilation through wall openings should be possible.

Facilities to control spillage of coal fines from rail wagons exiting rail receival should be
provided, including;
* A ground level concrete hose down area, with a collection sump, to extend at least two
wagon lengths, past the rail receival exit opening,
*Cleaning equipment to remove fine coal from wheels and ledges on departing rail
wagons.

New Inloading Conveyors
Provide water wash belt cleaners with scrapers at the head end of conveyors.

Provide a ground level concrete sealed area, with collection sump, sized to meet
operational requirements, under the head end of conveyors.

Provide wind guards on one side of elevated conveyors above a nominal height of 5
metres.

New Transfer Chutes
To avoid blockage and spillage, all new transfer chutes should be designed to handle all
coal types that can reasonably be determined to be shipped through the Terminal in the
future.




                                                                                       15
New Stacker Reclaimers
Effective continuous conveyor wind guards should be provided on trippers. An
assessment should be made of likely wind direction and strength to determine if guards
on one side only will be sufficient to avoid dust lift-off.

Misting spray equipment should be provided for use when necessary to minimise dust
emission from the flow of material from the stacker head pulley, during adverse wind
conditions.

The drop height from the stacker to the stockpile should be minimised to reduce
exposure of the falling material to wind induced dust emission.

The use of distance measuring sensing devices should be investigated to minimise the
free fall height of material from the stacker, and also to provide an anti-collision facility to
prevent accidental contact by the machine with the stockpile.

New Stockpile Area
Operation of only "live stockpiles" will eliminate the need for dozers in reserve
stockpiles, thereby reducing the amount of fine material and resultant dust lift-off.

The surface of coal stockpiles loses moisture through the effect of high temperature and
wind. Surface drying can lead to a high level of dustiness, resulting in dust lift-off during
conditions of high wind speed. The drying effect can be overcome by replenishment of
surface moisture by the use of stockpile sprays. However, water supply at the Terminal is
in limited supply, particularly given the increased demands of the Stage 3 Expansion..

Recent research has shown that application of a chemical-in-water solution can provide
a veneer on the coal surface which minimises dust lift-off, even in periods of high
temperature and high wind speed. Tests on some dusty coal types have demonstrated
that a one off veneer treatment can achieve a long term (in terms of normal port stockpile
residence time) reduction in dust lift-off equal to, or better than, frequent application of
water spray to the coal surface.

Results of the test program conducted on Abbot Point coal types presented in Section
2.2, indicates that a veneer treatment will generally be effective should dust emission
problems be experienced.

Should there be concern over the estimated level of dust emissions some form of dust
suppression for coal stockpiles could be considered. It is therefore recommended that
consideration be given to future use of veneer treatment, as a possible lower cost
alternative to a stockpile water spray system, for use only during periods of high risk dust
emission.

Access roads in the stockpile area should be designed to allow access by a road tanker
to apply chemical veneer treatment to all stockpile surfaces. See Annexure B.




                                                                                       16
New Outloading Conveyors
Provide water wash belt cleaners and scrapers at the head end of conveyors.

Provide a ground level concrete sealed area, with collection sump, sized to meet
operational requirements, under the head end of conveyors.

Provide wind guards on one side of moderately elevated conveyors. Provide roof
sheeting and full height wall sheeting on one side of highly elevated conveyors, above a
nominal height of 5 metres, if the existing structure can carry the additional wind loading.

Provide sealed walkway flooring with splash turn up on sides and install water wash hose
down systems with launders and ground level cleanup sump.


New Transfer Towers
External cladding will not be required if effective spillage prevention and removal facilities
are provided. All main floors should be sealed with splash turn-up on sides. Hose down
systems with launders and ground level concrete paved area and a collection sump
should be provided. See requirements for chute design.

New Surge Bin
The ground area in the vicinity of the existing Surge Bin should be sealed with a concrete
surface graded to an adequate collection sump. Concrete should be adequate for
maintenance activities to be nominated by the Terminal Manager.

External cladding will not be required on the new surge bin if effective spillage prevention
and removal facilities are provided. All main floors should be sealed with splash turn-up
on sides. Hose down systems with launders and ground level concrete paved area and a
collection sump should be provided as noted above. See requirements for chute design.


New Ship loading Conveyor
The ship loader tripper should be designed to allow very effective water
wash scraper belt cleaning with slurry return to the transfer chute. At the head pulley, a
conventional high performance dry belt cleaner system, diverting sludge into a trailer
mounted collection bin will be adequate, thereby eliminating the need for sludge return
onshore if the shiploader tripper belt cleaner achieves a high level of performance, and if
regular adjustment and maintenance is provided to both belt cleaning systems.

 Upgrades to Existing Facilities
Other than as nominated above, upgrades to existing facilities are not proposed because
of the difficulty and cost in retrofitting controls to existing plant and the indicated absence
of any adverse impact of the existing operations on adjacent areas.




                                                                                      17
    ANNEXURE B
           Mobile Tanker applying Veneer Treatment to Stockpile Surface




.


                                                                          18

				
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