risk assessment report: decommissioning of parts of …

RISK ASSESSMENT REPORT

RISK ASSESSMENT REPORT:

DECOMMISSIONING OF PARTS OF THE CULLINAN

DIAMOND MINE BENEFICIATION PLANT

NAME OF APPLICANT: CULLINAN DIAMOND MINE (PTY) LTD

TEL NO: (014) 544 6100

POSTAL ADDRESS: Private Bag X1015, Cullinan

PHYSICAL ADDRESS: Olienhout Road, Cullinan, 1000


RISK ASSESSMENT REPORT: DECOMMISSIONING

OF PARTS OF THE CULLINAN DIAMOND MINE

BENEFICIATION PLANT

NAME OF APPLICANT: CULLINAN DIAMOND MINE (PTY) LTD

TEL NO: (012) 305 2487

POSTAL ADDRESS: Private Bag X1015, Cullinan

PHYSICAL ADDRESS: Olienhout Road, Cullinan, 1000

FILE REFERENCE NUMBER: TO BE PROVIDED


TABLE OF CONTENTS

1. Background Description .............................................................................................. 4

2. Description of the activities to be undertaken ........................................................... 5

3. Methodology used in determining and ranking potential environmental impacts

and risks ....................................................................................................................... 5

4. DMR impact assessment and mitigation measures table template requirements . 15

4.1 Shangoni risk assessment table template in relation to the requirements as per the

DMR report template ............................................................................................... 16

5. Risk assessment and mitigation / management measures ..................................... 17

6. Summary of the positive and negative implications and risks of the proposed

activity and identified alternatives ............................................................................ 25

7. Cumulative impacts ................................................................................................... 29

8. Proposed impact management objectives and the impact management outcomes

for inclusion into the EMPr ........................................................................................ 31


1. Background Description

Cullinan Diamond Mine Pty (Ltd) (“CDM”) is a company that mines Diamonds at the Cullinan Diamond

Mine. The site is situated approximately 1.8 km south west of Cullinan, the closest major town to the

mine. Parts of the current Beneficiation Plant will be decommissioned/dismantled and replaced with

new infrastructure.

All material stripped out from the Beneficiation Plant will be sold to local Black Economic Empowerment

Service Level Agreement (“BEE SLA”) companies. Where indicated in specific areas the concrete will

be demolished and be placed at the CDM Landfill site. Any hazardous material will be removed and

stored at the salvage yard and disposed of by an appointed waste disposal certificated contractor to a

permitted landfill site. Contaminated soil will be stored in skips demarcated for this purpose and

disposed of by an appointed waste disposal certificated contractor to a permitted landfill site.

Shangoni Management Services (Pty) Ltd has been appointed as the independent environmental

practitioner, to conduct the required Basic Assessment (“BA”) for the Environmental Authorisation for

the following activities occurring as part of the decommissioning of part of the CDM’s Beneficiation

Plant:

• Activity 1: Dismantling and removal of conveyor belts.

• Activity 2: Dismantling and removal of cabling.

• Activity 3: Deconstruction of building material and concrete, and the removal of building

rubble/concrete to the CDM Landfill.

• Activity 4: Decommissioning of Water reticulation system and water pipelines.

• Activity 5: Decommissioning of the Washing Plant.

• Activity 6: Decommissioning of the Washing Plant Workshop and old Murray & Roberts area.

• Activity 7: Decommissioning of the Old Polysius Plant (High-Pressure Grinding Rolls).

• Activity 8: Decommissioning of the Large Diamond Recovery Plant and Waste Sorting Plant.

• Activity 9: Decommissioning of the Primary Crusher Plant.

• Activity 10 Decommissioning of the Prep Plant.

• Activity 11: Decommissioning of Plant Main Thickeners and Dewatering pump station.

• Activity 12: Decommissioning of the Coarse Dense Media Separation Plant.

• Activity 13: Decommissioning of the Re-crush Plant.

• Activity 14: Decommissioning of the Retreat Plant.

• Activity 15: Decommissioning of the Old Degrit Plant.

• Activity 16: Decommissioning of the Optical Sorting Plant.

• Activity 17: Decommissioning of the Caustic Plant.

• Activity 18: Decommissioning of the Old Sort house.

• Activity 19: Decommissioning of the Old Recovery Plant.

• Activity 20: Decommissioning of the Fines Dense Media Separation Plant.

• Activity 21: Decommissioning of the KHD Crusher plant section with the Dump Treatment Plant

Recovery.


• Activity 22: Decommissioning of the Slimes Disposal Unit Plant.

• Activity 23: Decommissioning of transformers and electrical switching equipment.

• Activity 24: Removal of contaminated soils to a permitted landfill site (where required).

• Activity 25: Transportation of workers, materials and waste to and from site.

• Activity 26: Establishment and operation of a contractor support area.

The table below provides a summary of the listed activities for which authorisation is applied for as per

GNR 983 of 4 December 2014, as amended.

LISTED ACTIVITY LISTED ACTIVITY DESCRIPTION

GNR 983 Listing

Notice 1 Activity 31(i)

and (v).

31. The decommissioning of existing facilities, structures or infrastructure for-

(i) any development and related operation activity or activities listed in this Notice,

Listing Notice 2 of 2014 or Listing Notice 3 of 2014;

(v) any activity regardless the time the activity was commenced with, where such

activity:

(a) is similarly listed to an activity in (i) and (ii) above; and

(b) is still in operation or development is still in progress;

excluding where-

(aa) activity 22 of this notice applies; or

(bb) the decommissioning is covered by part 8 of the National Environmental

Management:

Waste Act, 2008 (Act No. 59 of 2008) in which case the National Environmental

Management: Waste Act, 2008 applies.

2. Description of the activities to be undertaken

The following activities are to be undertaken as part of the decommissioning of parts of the Beneficiation

Plant:

Activity 1 Dismantling and removal of conveyor belts:

This activity includes the dismantling and removal of conveyor belts in the following plants:

• The Washing Plant;

• Old Polysius Plant;

• Large Diamond Recovery Plant;

• Primary Crusher Plant;

• Between the stockpile and wash plant;

• Prep Plant;

• Coarse Dense Media Separation;

• Recrush Plant;

• Retreat Plant; and

• Fines Dense Media Separation Plant:


All material stripped from the equipment will be sold to local BEE SLA companies. Reusable equipment

will be placed in a laydown area and will be sold as reusable equipment or auctioned off.

Activity 2 Dismantling and removal of cabling:

Powerlines and electrical cables in all the facilities to be decommissioned will be dismantled, removed

and sold. The three old 88kV feed power lines and MV switching yard with transformers will be

decommissioned by Eskom.

Activity 3 Deconstruction of building material and concrete, and the removal of building

rubble/concrete to the CDM Landfill:

This activity includes the crushing and removal of building rubble, concrete structures and concrete

floors during the dismantling of the following facilities:

• The Washing Plant;

• Old Polysius Plant;

• Large Diamond Recovery Plant;

• Primary Crusher Plant;

• Prep Plant;

• Plant Main Thickeners and Dewatering Pump Station;

• Coarse Dense Media Separation;

• Recrush Plant;

• Retreat Plant;

• Old Degrit Plant;

• Optical Sorting Plant;

• Sorthouse;

• Recovery Plant;

• Fines Dense Media Separation Plant; and

• Slimes Disposal Unit Plant

The building rubble and concrete to be removed is approximately 2 200 m3 and will be disposed at the

CDM Landfill Site which is licenced to receive general waste.

Activity 4 Decommissioning of Water reticulation system and water pipelines:

Water pipes will be disconnected. Pipes at the Primary Crusher Plant, Dewatering Pump Station,

Coarse Dense Media and Old Degrit Plant will be stripped and sold.

Activity 5 Decommissioning of the Washing Plant:

This includes the removal of equipment in the Washing Plant; two steel floors with beams and braces

and recycling conveyors. Equipment stripped from the plant will be sold.

Activity 6 Decommissioning of the Washing Plant Workshop and old Murray & Roberts

area:


This area will be cleared for emergency purposes, as it falls within the 100m boundary from the pit

walls.

Activity 7 Decommissioning of the Old Polysius Plant (High-Pressure Grinding Rolls):

This activity includes stripping of the components of the Polysius Plant and includes the removal of two

crushers and all equipment and internal equipment structures to create space in the building. The shell

will be retained, and the plant will be used as a store.

Activity 8 Decommissioning of the Large Diamond Recovery Plant and Waste Sorting

Plant:

This activity includes the stripping and demolition of the plant, its substation, feed conveyor 1636 and

its discharge conveyor 1636. Approximately 12 m3 of concrete will be removed and disposed at the

CDM Landfill, which is licenced to receive general waste.

Activity 9 Decommissioning of the Primary Crusher Plant:

The six vibrating feeders, four screens, pumps and sump pumps will be stripped out and sold as

complete units or equipment. The conveyor belts, chutes, old dust scrubbers, air pipes, water pipes and

internal structures will be stripped by local BEE SLA contractors and all the stripping’s will be sold to

them. The building with the cranes will be used for a loading point and storage facility.

Approximately 360 m3 of concrete and building rubble will be disposed at the CDM Landfill, which is

licenced to receive general waste.

Activity 10 Decommissioning of the Prep Plant:

This activity includes the demolition of the total Prep Plant with feed conveyor 1615, tripper car and

conveyor 1616, discharge conveyors 01 and 02. The underground mud pipe and the pipe gantry will be

retained through this area. Total concrete and building rubble is estimated at 36 m3 and will be moved

to the CDM Landfill site, which is licenced to receive general waste. l.

Activity 11 Decommissioning of Plant Main Thickeners and Dewatering pump station:

This activity includes removing several pumps and sump pumps with valves. All steel and pipes will be

removed by BEE SLA contractors and sold to them as part of the scrap project. The thickener cavities

are to be filled and the surface concrete is to be demolished and the ground level to be restored.

Activity 12 Decommissioning of the Coarse Dense Media Separation Plant:

This activity includes stripping of four conveyors (1617A-D) that feed the Coarse Dense Media

Separation Plant (CDMS) Plant. These conveyors will be stripped by the BEE SLA contractors. The

CDMS houses two pumped Dense Media Separation (DMS) processes of high value that are resalable

and need to be sold as soon as possible to ensure the highest value is recovered; the value will

depreciate over time due to standing equipment and pitting of bearings, as also rubber lining will perish.

The six cyclones, six screens, two large Warman pumps and several Warman sump pumps will be


stripped out and sold as complete units or equipment. The conveyor belts, chutes, Cyclone feed &

discharge boxes, rubber lined tanks, air pipes, water pipes and internal structures will be stripped by

local BEE SLA contractors and all the stripped items will be sold to the BEE Contractors. The building

with the cranes will be stripped to the ground and the sumps filled with soil. Some concrete plinths will

be broken down. The concrete and building rubble is approximately 45 m3 and will be moved to the

CDM Landfill, which is licenced to receive general waste.

Activity 13 Decommissioning of the Re-crush Plant:

This activity includes stripping the Re-crush Plant including the feed conveyors 19 and 19A tripper, six

internal belt feeders, three discharge conveyors 20, 21 & 22 as well as the old infield screening

conveyors 18A & 18B that will be removed by the BEE SLA contractors. The eight vibrating screens,

two vibrating screens, sump pumps and the cranes will be stripped and sold as complete units or

equipment. The conveyor belts, chutes, old dust scrubbers, air pipes, water pipes and internal structures

will be stripped by local BEE SLA contractors and all the strippings will be sold to them. The concrete

and building rubble is approximately 250 m3 and will be moved to the CDM Landfill, which is licenced to

receive general waste.

Activity 14 Decommissioning of the Retreat Plant:

In this activity, the five fines DMS modules will be stripped, the equipment screens, pumps, magnetic

separators, densifiers, cyclones will be removed and sold as equipment. All other structures, conveyors,

bins, tanks will be stripped, removed and sold as equipment. The cranes will be removed and sold lastly

before the building structure will be stripped and sold. The concrete structures will be broken down and

all concrete and building rubble off approximately 460 m3 will be taken to the landfill site, which is

licenced to receive general waste. The thickener cavities are to be filled and the surface concrete is to

be demolished and the ground level to be restored.

Activity 15 Decommissioning of the Old Degrit Plant:

The plant is to be deconstructed partly and the pipe supports to be retained. Most of the structure will

be sold as scrap to BEE SLA Contractors. Some concrete structures will be broken down and all

concrete and building rubble off approximately 10 m3 will be taken to the CDM landfill site, which is


Activity 16 Decommissioning of the Optical Sorting Plant:

This activity includes deconstructing the optical sorter plant. The equipment will be sold, and scrap will

be sold to BEE SLA contractors. The concrete structures will be broken down and all concrete and

building rubble off approximately 25 m3 will be taken to the CDM landfill site, which is licenced to receive

general waste.

Activity 17 Decommissioning of the Caustic Plant:

This includes the decommissioning of the processes undertaken in the Caustic Plant and the plant used

as a Control and Instrumentation Workshop. The structure will not be decommissioned.


Activity 18 Decommissioning of the Old Sort house:

This activity includes the removal of all reusable equipment that will be redistributed within the Petra

Group if not reused it will be sold off. The Sorthouse will be demolished. All the building structures will

be broken down and all concrete and building rubble off approximately 120 m3 will be taken to the CDM

landfill site, which is licenced to receive general waste.

Activity 19 Decommissioning of the Old Recovery Plant:

Most of the equipment will be removed from the recovery and be sold off. The structures inside the

recovery will be stripped down and sold. The building will be demolished to the point where the

basements will be filled up to natural ground level. The concrete structures will be broken down and all



Activity 20 Decommissioning of the Fines Dense Media Separation Plant:

The two fines DMS modules will be stripped, the equipment screens, pumps, magnetic separators,

densifiers, cyclones will be removed and sold. All other structures, conveyors, bins, tanks will be

stripped, removed and sold to contractors. The cranes will be removed and sold lastly before the

building structure will be stripped down and sold. The concrete structures will be broken down and all



The sumps might be utilized to assist with the containment of process water overflow from the new

recovery and to pump back to the XRL process water tank. Minor concrete structures will be broken

down and all concrete and building rubble off approximately 35 m3 will be taken to the CDM landfill site,

which is licenced to receive general waste.

Activity 21 Decommissioning of the KHD Crusher plant section with the Dump Treatment

Plant Recovery:

This activity includes the removal of equipment from the old Dump Treatment Plant (“DTP”) recovery.

This equipment will be redistributed within the Petra Group or will be sold.

Activity 22 Decommissioning of the Slimes Disposal Unit Plant:

This plant with all the pipe gantries will be broken down. The pumps and sump pumps will be removed

as complete units and will be sold. The structures, tanks, piping and the piping gantries will be stripped

by BEE SLA Contractors and will be sold to them. The sumps will be demolished and filled to natural

ground level at a later stage. Minor building structures will be broken down and all concrete and building

rubble off approximately 10 m3 will be taken to the CDM landfill site, which is licenced to receive general

waste.


Activity 23 Decommissioning of transformers and electrical switching equipment:

This activity includes dismantling transformers and electrical switching equipment. Re-

usable/recyclable material will be removed and sold.

Activity 24 Removal of contaminated soils to a permitted landfill site (where required):

This activity includes the removal of contaminated soil present at the area to be decommissioned to a

permitted landfill site.

Activity 25 Transportation of workers, materials and waste to and from site:

Transport activities for the project will include contractors travelling to and from site, equipment /material

transported off site for selling, recycling, re-use, transport of waste to permitted landfill sites.

Activity 26 Establishment and operation of a contractor support area:

For day-to-day management of the operations, including portable chemical toilets, use of generators (if

required for power supply) and temporary material and waste storage areas. Temporary support

infrastructure will be set-up on site for the duration of the project. The area will be fenced with security

and access control.

3. Methodology used in determining and ranking

potential environmental impacts and risks

The environmental risk of any aspect is determined by a combination of parameters associated with the

impact. Each parameter connects the physical characteristics of an impact to a quantifiable value to

rate the environmental risk.

Impact assessments should be conducted based on a methodology that includes the following:

• Clear processes for impact identification, predication and evaluation;

• Specification of the impact identification techniques;

• Criteria to evaluate the significance of impacts;

• Design of mitigation measures to lessen impacts;

• Definition of the different types of impacts (indirect, direct or cumulative); and

• Specification of uncertainties.

After all impacts have been identified, the nature and scale of each impact can be predicted. The impact

prediction will take into account physical, biological, socio-economic and cultural information and will

then estimate the likely parameters and characteristics of the impacts. The impact prediction will aim to

provide a basis from which the significance of each impact can be determined and appropriate

mitigation measures can be developed.


The risk assessment methodology is based on defining and understanding the three basic components

of the risk, i.e. the source of the risk, the pathway and the target that experiences the risk (receptor).

Refer to Figure 1 below for a model representing the above principle (as contained in the DWA’s Best

Practice Guideline: G4 – Impact Prediction).

Figure 1: Impact prediction model

Table 1 and Table 2 below indicate the methodology to be used in order to assess the Probability and

Magnitude of the impact, respectively, and Table 3 provides the Risk Matrix that will be used to plot the

Probability against the Magnitude in order to determine the Severity of the impact.


Table 1: Determination of Probability of impact

SCORE FREQUENCY OF ASPECT /

UNWANTED EVENT

AVAILABILITY OF

PATHWAY FROM THE

SOURCE TO THE

RECEPTOR

AVAILABILITY OF

RECEPTOR

1 Never known to have

happened, but may happen

A pathway to allow for the

impact to occur is never

available

The receptor is never available

2 Known to happen in industry


impact to occur is almost

never available

The receptor is almost never

available

3 < once a year


impact to occur is sometimes

available

The receptor is sometimes

available

4 Once per year to up to once

per month


impact to occur is almost

always available

The receptor is almost always

available

5 Once a month - Continuous


impact to occur is always

available

The receptor is always

available

Step 1: Determine the PROBABILITY of the impact by calculating the average between the Frequency of the Aspect, the

Availability of a pathway to the receptor and the availability of the receptor.


Table 2: Determination of Magnitude of impact

Score

SOURCE RECEPTOR

Duration of

impact Extent

Volume / Quantity /

Intensity

Toxicity / Destruction

Effect Reversibility

Sensitivity of environmental

component

1 Lasting days to

a month

Effect limited to the

site. (metres);

Very small quantities /

volumes / intensity

(e.g. < 50L or < 1Ha)

Non-toxic (e.g. water) /

Very low potential to

create damage or

destruction to the

environment

Bio-physical and/or social

functions and/or processes

will remain unaltered.

Current environmental

component(s) are largely disturbed

from the natural state.

Receptor of low significance /

sensitivity

2 Lasting 1 month

to 1 year

Effect limited to the

activity and its

immediate

surroundings. (tens of

metres)

Small quantities /

volumes / intensity

(e.g. 50L to 210L or

1Ha to 5Ha)

Slightly toxic / Harmful

(e.g. diluted brine) / Low

potential to create

damage or destruction to

the environment



might be negligibly altered

or enhanced / Still

reversible


component(s) are moderately

disturbed from the natural state.

No environmentally sensitive

components.

3 Lasting 1 – 5

years

Impacts on extended

area beyond site

boundary (hundreds

of metres)

Moderate quantities /

volumes / intensity

(e.g. > 210 L < 5000L

or 5 – 8Ha)

Moderately toxic (e.g.

slimes) Potential to

create damage or

destruction to the

environment



might be notably altered or

enhanced / Partially

reversible


component(s) are a mix of

disturbed and undisturbed areas.

Area with some environmental

sensitivity (scarce / valuable

environment etc.).

4

Lasting 5 years

to Life of

Organisation

Impact on local scale

/ adjacent sites (km’s)

Very large quantities /

volumes / intensity

(e.g. 5000 L –

10 000L or 8Ha–

12Ha)

Toxic (e.g. diesel &

Sodium Hydroxide)



might be considerably

altered or enhanced /

potentially irreversible


component(s) are in a natural

state.

Environmentally sensitive

environment / receptor

(endangered species / habitats

etc.).

5

Beyond life of

Organisation /

Permanent

impacts

Extends widely

(nationally or globally)

Very large quantities /

volumes / intensity

(e.g. > 10 000 L or >

12Ha)

Highly toxic (e.g. arsenic

or TCE)



might be

severely/substantially

altered or enhanced /

Irreversible


component(s) are in a pristine

natural state.

Highly Sensitive area (endangered

species, protected habitats etc.)

Step 2: Determine the MAGNITUDE of the impact by calculating the average of the factors above.


Table 3: Determination of Severity of impact

ENVIRONMENTAL IMPACT RATING / PRIORITY

MAGNITUDE

PROBABILITY 1

Minor

2

Low

3

Medium

4

High

5

Major

5

Almost Certain Low Medium High High High

4

Likely Low Medium High High High

3

Possible Low Medium Medium High High

2

Unlikely Low Low Medium Medium High

1

Rare Low Low Low Medium Medium

Step 3: Determine the SEVERITY of the impact by plotting the averages that were obtained above for Probability and

Magnitude.


4. DMR impact assessment and mitigation

measures table template requirements

In terms of section 16(3)(b) of the Environmental Impact Assessment (EIA) Regulations, 2014, as

amended, any report submitted as part of an application must be prepared in a format that may be

determined by the Competent Authority. The Department of Mineral Resources (DMR) therefore

instructed that the prescribed reports required in respect of applications for an environmental

authorisation for a listed activities triggered are submitted in the exact format of, and provide all the

information required in terms of, the template provided by the Competent Authority.

It is the purpose of the Risk Assessment Report (RAR) to provide the Competent Authority with the

detail associated with the impact assessment table template (as provided below) and included into the

various sections of the BAR / EMPr.

The following table and column headings (shown in Table 4 below), form part of the Shangoni risk

assessment table template, which takes into account the DMR’s BAR / EMPr template (refer to the full

completed table in Section 5 below).

For ease of reference, the various table columns, as required by the DMR, have been incorporated into

one integrated risk assessment table, as is presented in Table 4 below.


4.1 Shangoni risk assessment table template in relation to the requirements as per the DMR report template

Table 4: Shangoni risk assessment table template in relation to the requirements as per the DMR report template and table content.

NO. ASPECTS

AFFECTED

ACTIVITY

whether listed

or not listed

POTENTIAL IMPACT

PHASE

in which impact

is anticipated

SIZE AND SCALE

of disturbance

SIGNIFICANCE

if not mitigated MITIGATION

TYPE

(modify, remedy,

control, or stop)

through e.g.

noise control

measures)

MITIGATION MEASURES

SIGNIFICANCE

If mitigated

STANDARD TO BE

ACHIEVED

COMPLIANCE

WITH

STANDARDS

TIME PERIOD FOR

IMPLEMENTATION

Impact description

Revers

ibili

ty

Irre

pla

ceable

loss

Pro

babili

ty

Magnitude

Sig

nific

ance

Pro

babili

ty

Magnitude

Sig

nific

ance

For

refe

rencin

g p

urp

oses

As required

in the

following

sections of

the DMR

BAR / EMPr

template:

• Section

3(j) of

Part A

• Section 1

(e) of Part

B

As required in

the following

sections of the

DMR BAR /

EMPr

template:

• Section 3(h)

(v) of Part A

• Section 3(j)

of Part A

• Section 1(d)

(iv) of Part B

• Section 1 (e)

of Part B

• Section 1 (f)

of Part B

As required in the following sections of the

DMR BAR / EMPr template:

• Section 3(h) (v) of Part A

• Section 3(j) of Part A

• Section 1 (e) of Part B

• Section 1 (f) of Part B

As required in

the following

sections of the

DMR BAR /

EMPr template:

• Section 3(j) of

Part A

• Section 1 (e)

of Part B

As required in the

following sections

of the DMR BAR /

EMPr template:

• Section 1(d) (iv)

of Part B.

As required in

the following

sections of the

DMR BAR /

EMPr template:

• Section 3(h)

(v) of Part A

• Section 3(j) of

Part A

This also takes

Duration into

account

As required in the

following sections

of the DMR BAR /

EMPr template:

• Section 3(h)

(v) of Part A

• Section 3(j) of

Part A

• Section 1 (e)

of Part B

• Section 1 (f)

of Part B

As required in the following sections of

the DMR BAR / EMPr template:

• Section 1(d) (iv) of Part B

As required in

the following

sections of the

DMR BAR /

EMPr template:

• Section 3(h)

(v) of Part A

• Section 3(j) of

Part A

This also takes

Duration into

account

As required in the

following sections of

the DMR BAR /

EMPr template:

• Section 1 (e) of

Part B

As required in the

following sections

of the DMR BAR /

EMPr template:

• Section 1(d)

(iv) of Part B.

• Section 1 (f)

of Part B

As required in the

following sections of

the DMR BAR /

EMPr template:

• Section 1(d) (iv)

of Part B.

• Section 1 (f) of

Part B


5. Risk assessment and mitigation / management measures

NO. ASPECTS

AFFECTED

ACTIVITY

whether

listed or not

listed

POTENTIAL IMPACT

PHASE

in which impact

is anticipated

SIZE AND

SCALE

of

disturban

ce

SIGNIFICANCE


TYPE

(modify,

remedy,

control, or

stop) through

e.g. noise

control

measures)

MITIGATION MEASURES

SIGNIFICANCE

If mitigated

STANDARD TO

BE ACHIEVED

COMPLIANCE WITH

STANDARDS

TIME PERIOD FOR

IMPLEMENTATION

Impact description

Revers

ibilit

y

Irre

pla

ceab

le lo

ss

Pro

bab

ilit

y

Mag

nit

ud

e

Sig

nif

ican

ce

Pro

bab

ilit

y

Mag

nit

ud

e

Sig

nif

ican

ce

1 Air Quality Activity 1 - 26

Impact description: Dust generation

from internal access roads and

general demolition and crushing

activities.

Extent of impact: Site and immediate

surroundings.

Duration of impact: Lifecycle of the

project.

Revers

ible

Low

Degre

e

Decommissioning

Phase

Within the

32 ha 4 2

Mediu

m

Control

• Vehicles should be regularly

serviced to minimise atmospheric

emissions.

• The Air quality monitoring

programme will be continued

with.

• Dust suppression of roads at

regular intervals or during windy

periods.

• Ensure adequate dust level

monitoring is put in place, where

applicable.

2 1

Low

Minimise

deterioration of

ambient air quality

Dust suppressing

methods to reduce dust

to comply with the Dust

Control Regulation GNR

827 of 2013 and

NEM:AQA, 2004.

2 years

2 Air Quality Activity 1 - 26

Impact description: Unpleasant

odours generated from poorly

maintained/ serviced portable

chemical toilets and asbestos related

emissions from decommissioning of

buildings and pipelines.


surroundings.


project.

Revers

ible

Low

Degre

e

Decommissioning

Phase

Within the

32 ha 3 2

Mediu

m

Control

• Ensure that portable chemical

toilets are maintained at agreed

upon intervals by an appropriate

contractor.

• Comprehensive asbestos survey

to be undertaken prior to

decommissioning and

demolishing.

• All asbestos containing material

must be removed and disposed

in accordance with the Asbestos

Regulations GNR 1637 of 2002

with specific reference to Section

20 (disposal) and Section 21

(demolition).

2 1

Low

Minimise

deterioration of

ambient air quality

Air quality management

in accordance with the

National Environmental

Management: Air Quality

Act (Act No 39 of 2004);

Regulations there under

and amendments

thereto.

Emergency

preparedness and

response in compliance

with the compliance with

the Mine Health and

Safety Regulations under

the Mine Health and

Safety Act (1996);

Asbestos Management

and Monitoring Plan.

2 years

3 Air Quality Activity 24

Impact description: Stored chemicals

and hazardous wastes may produce

noxious or irritating odours.


surroundings.


project.

Revers

ible

Low

Degre

e

Decommissioning

Phase

Within the

32 ha 4 2

Mediu

m

Control

• Chemicals to be stored in an

appropriately designed

container.

• Where possible, hazardous

wastes are to be stored in

sealed receptacles.

• Hazardous chemicals are to

always be stored in an area

where regularly maintained

firefighting equipment is

available.

• Where possible, polluted soils

should be stored for the shortest

possible time period prior to

disposal.

2 1

Low

Minimise

deterioration of

ambient air quality

Air quality management

in accordance with the


Management: Air Quality

Act (Act No 39 of 2004);


and amendments

thereto.

2 years


NO. ASPECTS

AFFECTED

ACTIVITY

whether

listed or not

listed

POTENTIAL IMPACT

PHASE

in which impact

is anticipated

SIZE AND

SCALE

of

disturban

ce

SIGNIFICANCE


TYPE

(modify,

remedy,

control, or

stop) through

e.g. noise

control

measures)

MITIGATION MEASURES

SIGNIFICANCE

If mitigated

STANDARD TO

BE ACHIEVED

COMPLIANCE WITH

STANDARDS

TIME PERIOD FOR

IMPLEMENTATION

Impact description

Revers

ibilit

y

Irre

pla

ceab

le lo

ss

Pro

bab

ilit

y

Mag

nit

ud

e

Sig

nif

ican

ce

Pro

bab

ilit

y

Mag

nit

ud

e

Sig

nif

ican

ce

4 Ecology Activity 1 – 26

Impact description: Impacts on floral

biodiversity due to alien floral

species invasion/proliferation.

Extent of impact: Site and

surrounding area

Duration of impact Lifecycle of the

project

Part

ially

Revers

ible

Low

Degre

e

Decommissioning

Phase

Within the

32 ha 4 2

Mediu

m

Control

• Inform employees about

dominant alien vegetation

species.

• Implement alien vegetation

control plan specific for the

exotic/weed species identified

within the area.

• All development footprint areas

should remain as small as

possible and should not

encroach onto more sensitive

open veld areas.

• Proliferation and a further

increase of alien and invasive

grass species are expected

within disturbed areas. These

species should be eradicated in

line with the specialist

recommendations and

controlled to prevent their

spread beyond the site

boundary.

• Removal of the alien and weed

species encountered on the

property in order to comply with

existing legislation

(amendments to the regulations

under the Conservation of

Agricultural Resources Act,

1983 and Section 28 of the


Management Act, 1998).

2 2

Low

Minimise the loss

of species diversity

Alien & Invasive Species

Control Program.

System and Operational

Procedures and training

programme in

compliance with

ISO14001.

Biodiversity and alien

invasive management in

accordance with NEMBA,

2004.

2 years

5 Ecology Activity 1 - 26

Impact description: Destruction of

habitat may impact on floral

biodiversity within the CDM

Beneficiation Plant area.


surrounding area


project

Revers

ible

Low

Degre

e

Decommissioning

Phase

Within the

32 ha 2 1

Low

Control

• All development footprint areas

should remain as small as

possible and should not

encroach onto surrounding

more sensitive open veld areas.

• All soils compacted as a result

of activities should be ripped,

profiled and monitored to

ensure establishment of natural

vegetation.

• Appropriate waste removal and

disposal should be provided as

to prevent refuse dumping in

surrounding open veld areas.

1 1

Low

Limit the loss of

vegetation

cover.



programme in

compliance with

ISO14001.

Biodiversity and alien

invasive management in

accordance with NEMBA,

2004.

2 years


NO. ASPECTS

AFFECTED

ACTIVITY

whether

listed or not

listed

POTENTIAL IMPACT

PHASE

in which impact

is anticipated

SIZE AND

SCALE

of

disturban

ce

SIGNIFICANCE


TYPE

(modify,

remedy,

control, or

stop) through

e.g. noise

control

measures)

MITIGATION MEASURES

SIGNIFICANCE

If mitigated

STANDARD TO

BE ACHIEVED

COMPLIANCE WITH

STANDARDS

TIME PERIOD FOR

IMPLEMENTATION

Impact description

Revers

ibilit

y

Irre

pla

ceab

le lo

ss

Pro

bab

ilit

y

Mag

nit

ud

e

Sig

nif

ican

ce

Pro

bab

ilit

y

Mag

nit

ud

e

Sig

nif

ican

ce

6 Ecology Activity1 – 26

Impact description: General

disturbance to overall floral

biodiversity due to dust generation,

indiscriminate fires and ineffective

monitoring.


surrounding area


project

Revers

ible

Low

Degre

e

Decommissioning

Phase

Within the

32 ha 4 2

Mediu

m

Control

• It must be ensured that all roads

and construction areas are

regularly sprayed with water or

treated with other dust

suppression measures in order

to curb dust generation. This is

particularly necessary during

the dry season when increased

levels of dust generation can be

expected. However, care should

be taken not to over-spray

causing water run-off and

subsequent sediment loss into

adjacent waterways.

• Ongoing monitoring of dust

should be employed to ensure

identification of increased dust

levels over time or in specific

areas.

• If any excessive dying out of

vegetation occurs in areas of

dust generation, measures to

mitigate the impact should be

immediately sought.

• All informal fires on the property

should be prohibited.

• Identify areas where the value of

the biological resource warrants

protection and therefore

controlled access by the

contractors.

• Maintenance of fences to

ensure that access control is

maintained.

• Compliance with regulations

under the National Forest and

Fire Laws Amendment Act,

2001.

2 2

Low

Limit the

disturbance to the

overall floral

biodiversity.

Dust monitoring and dust

suppression to reduce

dust to comply with NEM:

AQA, 2004 and

regulations there

under.

Compliance with

regulations under the

National Forest and Fire

Laws Amendment Act,

2001.

General implementation

of activities taking Mining

and Biodiversity

Guidelines into account.

2 years

7 Groundwater Activity 1 – 26

Impact description: Groundwater

may become contaminated by

hydrocarbons leaking from

equipment and machinery, stored

materials at the contractor support

area and temporarily stockpiled

hazardous waste.


surrounding area


project

Part

ially

Revers

ible

Low

Degre

e

Decommissioning

Phase

Within the

32 ha 4 2

Mediu

m

Control

• All equipment and machinery

are to be appropriately

maintained and checked for

leaks regularly;

• Standing machinery are to be

equipped with drip trays.

• Hydrocarbons, materials and

waste stored on site are to be

stored in areas approved by

CDM Environmental and are to

be stored in a bunded area on

an impermeable surface.

1 1

Low

Minimise the

impact on

Groundwater

Quality.

Water management

measures in compliance

with NWA, 1998 and GN

704, 1999.

Compliance with DWS’s

Best Practice Guideline

Series in terms of

integrated water and

waste management and

monitoring.

Groundwater monitoring

programme.

2 years


NO. ASPECTS

AFFECTED

ACTIVITY

whether

listed or not

listed

POTENTIAL IMPACT

PHASE

in which impact

is anticipated

SIZE AND

SCALE

of

disturban

ce

SIGNIFICANCE


TYPE

(modify,

remedy,

control, or

stop) through

e.g. noise

control

measures)

MITIGATION MEASURES

SIGNIFICANCE

If mitigated

STANDARD TO

BE ACHIEVED

COMPLIANCE WITH

STANDARDS

TIME PERIOD FOR

IMPLEMENTATION

Impact description

Revers

ibilit

y

Irre

pla

ceab

le lo

ss

Pro

bab

ilit

y

Mag

nit

ud

e

Sig

nif

ican

ce

Pro

bab

ilit

y

Mag

nit

ud

e

Sig

nif

ican

ce

8 Noise Activity 1 – 26

Impact description: Increase in

ambient noise levels by demolition

related machinery.

Increase in ambient noise levels by

demolition activities associated with

the dismantling of structures.


surrounding area


project

Revers

ible

Low

Degre

e

Decommissioning

Phase

Within the

32 ha 3 1

Low

Control

• Demolition activities are to take

place during the approved work

hours, these are to be known to

and agreed upon with all

contractors.

• Noise monitoring will be

conducted during the

decommissioning phase in

order to ensure compliance with

the relevant standard.

• Generators must be switched off

when not used.

2 1

Low

Minimise the noise

impact on sensitive

receptors

SABS Code of Practice

0103 of 2008: The

measurement and rating

of environmental noise

with respect to land use,

health, annoyance and to

speech communication.


0328 of 2008:

Environmental Noise

Impact Assessments.

2 years

9 Noise Activity 25

Impact description: Increase in

ambient noise levels by vehicles

removing material and waste from

the site.


surrounding area.

Duration of impact: Lasting one

month to a year

Revers

ible

Low

Degre

e

Decommissioning

Phase

Within the

32 ha 2 1

Low

Control

• Silencers shall be fitted to the

heavy machinery where

possible.

• Normal vehicles should have

silencers as required by the

relevant Road Traffic Acts.

• Audible reverse alarms will not

be removed as it reduces the

risk of incidents involving these

vehicles.

• A complaints register should be

in place at the site. All

complaints, solutions and

agreements between the mine

and complaining parties will be

kept in a specific file in the

Environmental Specialist’s

office.

• The mine is advised to instruct

drivers of trucks to use hooters

in a disciplined manner for

purposes of safety only, not for

signalling or any other purpose.

1 1

Low

Minimise the noise

impact on sensitive

receptors.


0103 of 2008: The

measurement and rating

of environmental noise

with respect to land use,

health, annoyance and to

speech communication.


0328 of 2008:

Environmental Noise

Impact Assessments

2 years


NO. ASPECTS

AFFECTED

ACTIVITY

whether

listed or not

listed

POTENTIAL IMPACT

PHASE

in which impact

is anticipated

SIZE AND

SCALE

of

disturban

ce

SIGNIFICANCE


TYPE

(modify,

remedy,

control, or

stop) through

e.g. noise

control

measures)

MITIGATION MEASURES

SIGNIFICANCE

If mitigated

STANDARD TO

BE ACHIEVED

COMPLIANCE WITH

STANDARDS

TIME PERIOD FOR

IMPLEMENTATION

Impact description

Revers

ibilit

y

Irre

pla

ceab

le lo

ss

Pro

bab

ilit

y

Mag

nit

ud

e

Sig

nif

ican

ce

Pro

bab

ilit

y

Mag

nit

ud

e

Sig

nif

ican

ce

10

Soil and

Land

Capability

Activity 1 - 24

Impact description: Removal of

potentially contaminated material.

Extent of impact: Site


project

Revers

ible

Low

Degre

e

Decommissioning

Phase

Within the

32 ha 4 2

Mediu

m

Control

• Removal of all potentially

polluting infrastructure.

• Where appropriate separate

clean material from polluted

material.

• Buliding rubble and concrete

should be inspected for any

contamination before disposed

of at the CDM licenced landfill

site. Should it be identified that

the building rubble or concrete is

contaminated, these materials

will need to be disposed of by an

appointed waste disposal

certificated contractor to a


• Store all hazardous material

within the footprint of the

salvage yard area as per the

requirements of the Waste

Management Licence for the

salvage yard. Hazardous waste

should be disposed of by an

appointed waste disposal



• Contaminated soil should be

stored in skips demarcated for

this purpose and disposed of by

an appointed waste disposal



• Excavation of the contaminated

material for disposal to a

licensed landfill through waste

classification analysis to

ascertain correct disposal

methods in terms of the National

Norms and Standards.

• Remove existing asbestos

containing material using a

certified asbestos removal

contractor for appropriate

disposal to a certified site

• Remove any existing tyres

stored onsite as these are the

potential source of

contamination if burning where

to be undertaking again.

• Remove substations and

surrounding contaminants,

• Where required, flush any

pipelines to remove hazardous

material and treat material as

waste.

2 1

Low

Minimise the

impact on soil and

land capability.



programme in

compliance with

ISO14001.

Reasonable precaution

will be taken to prevent

spillage and in case there

is spillage, cleaning

procedures to be

undertaken in order to

comply with the principles

of pollution prevention

and duty of care (NEMA,

1998).

In Compliance with the

National Norms and

Standards for the

Remediation of

Contaminated Land and

Soil Quality (GNR.331 of

2014), thereunder.

Managing general and/or

hazardous waste in a

manner as to comply with

NEM:WA, 2008.

Water management



704, 1999.

Compliance to the Waste

Management Licence for

the Salvage yard and

Landfill site.

2 years


NO. ASPECTS

AFFECTED

ACTIVITY

whether

listed or not

listed

POTENTIAL IMPACT

PHASE

in which impact

is anticipated

SIZE AND

SCALE

of

disturban

ce

SIGNIFICANCE


TYPE

(modify,

remedy,

control, or

stop) through

e.g. noise

control

measures)

MITIGATION MEASURES

SIGNIFICANCE

If mitigated

STANDARD TO

BE ACHIEVED

COMPLIANCE WITH

STANDARDS

TIME PERIOD FOR

IMPLEMENTATION

Impact description

Revers

ibilit

y

Irre

pla

ceab

le lo

ss

Pro

bab

ilit

y

Mag

nit

ud

e

Sig

nif

ican

ce

Pro

bab

ilit

y

Mag

nit

ud

e

Sig

nif

ican

ce

11

Soil and

Land

Capability

Activity 1 – 26

Impact description: Frequent

movement of heavy machinery may

lead to the compaction of valuable

soils.


surrounding area


project

Revers

ible

Low

Degre

e

Decommissioning

Phase

Within the

32 ha 4 2

Mediu

m

Control

• Other than working areas,

heavy machinery are only to

travel along demarcated roads

and are not to enter any areas

that have not been authorized.

2 1

Low

Minimise the

impact on soil and

land capability.


National Norms and

Standards for the

Remediation of



2014), thereunder.



programme in

compliance with

ISO14001.

2 years

12

Soil and

Land

Capability

Activity 1 – 26

Impact description: Disturbance and

removal of soils may lead to

erosional processes;


surrounding area


project

Revers

ible

Low

Degre

e

Decommissioning

Phase

Within the

32 ha 4 2

Mediu

m

Control

• Where soils are disturbed on

slopes or within areas where soil

erosion is likely to take place,

mitigation is to take place in the

form of the positioning of

surface water flow barriers or

gabions.

1 1

Low

Minimise the

impact on soil and

land capability.

Rehabilitation in terms of

MPRDA and NEMA

principles.

Water management



704, 1999.

Compliance with DWS’s

Best Practice Guideline

Series in terms of

integrated water and

waste management and

monitoring.

2 years

13

Soil and

Land

Capability

Activity 1 – 26

Impact description: Soils may

become contaminated by


construction equipment and

machinery; stored materials at the

contractor support area, temporarily

stockpiled hazardous waste


surrounding area


project

Revers

ible

Low

Degre

e

Decommissioning

Phase

Within the

32 ha 4 2

Mediu

m

Control

• All equipment and machinery

are to be appropriately

maintained and checked for

leaks regularly;

• Standing machinery are to be

equipped with drip trays.

• Hydrocarbons, materials and

waste stored on site are to be

stored in areas approved by

CDM Environmental., and are to

be stored in a bunded area on

an impermeable surface.

• General waste receptacles are

to be placed at areas where

demolition or decommissioning

activities are to take place,

these are to be sufficient for

waste that is expected to be

generated in a single day, not

less, and the receptacle is to

have a lid on it to prevent litter

from being dispersed by wind;

• Sites are to be cleaned and all

refuse removed at the end of

each work day.

1 1

Low

Minimise impact

on soils.



programme in

compliance with

ISO14001.

Reasonable precaution

will be taken to prevent

spillage and in case there

is spillage, cleaning

procedures to be

undertaken in order to

comply with the principles

of pollution prevention

and duty of care (NEMA,

1998).

Managing general and/or

hazardous waste in a

manner as to comply with

NEM: WA, 2008.

Water management



704, 1999.

2 years


NO. ASPECTS

AFFECTED

ACTIVITY

whether

listed or not

listed

POTENTIAL IMPACT

PHASE

in which impact

is anticipated

SIZE AND

SCALE

of

disturban

ce

SIGNIFICANCE


TYPE

(modify,

remedy,

control, or

stop) through

e.g. noise

control

measures)

MITIGATION MEASURES

SIGNIFICANCE

If mitigated

STANDARD TO

BE ACHIEVED

COMPLIANCE WITH

STANDARDS

TIME PERIOD FOR

IMPLEMENTATION

Impact description

Revers

ibilit

y

Irre

pla

ceab

le lo

ss

Pro

bab

ilit

y

Mag

nit

ud

e

Sig

nif

ican

ce

Pro

bab

ilit

y

Mag

nit

ud

e

Sig

nif

ican

ce

14 Visual Activity 1 – 26

Impact description: The visual

environment will change once the

infrastructure has been

decommissioned and the buildings

crushed/broken.


surrounding area.


project

Part

ially

Revers

ible

Low

Degre

e

Decommissioning

Phase

Within the

32 ha 3 2

Mediu

m

Control

• The contractor is to ensure that

all sites are cleared up at the

end of the day and all general

refuse removed and disposed of

at a licensed facility.

1 1

Low

Minimise the visual

impact and sense

of the place



programme in

compliance with

ISO14001.

In compliance with the

Rehabilitation,

Decommissioning and

Closure plans and

Closure Objectives.


National Norms and

Standards for the

Remediation of



2014), thereunder.

In compliance with

principles contained in

the MPRDA, 2002, Mine

Health and Safety Act,

1996, NEMA, 1998,

NEM: WA, 2008,


and amendments

thereto.

The continued

implementation of

requirements contained

in the NEM:BA (2004)

and the regulations

thereunder.

2 years

15 Heritage and

Cultural Activity 1 - 23

Impact description:

Decommissioning of the beneficiation

plant and crushing of building

structures could result in a loss of

heritage resources.

Extent of impact: Site.


project

Part

ially

Revers

ible

Low

Degre

e

Decommissioning

Phase

Within the

32 ha 5 2

Mediu

m

Control

• Apply for the necessary permits

from SAHRA, if required.

• Comply with the conditions of

the permits

• Only areas approved by the

CDM Env., in consultation with

the heritage report and permits,

may be destroyed/impacted.

Should any artefacts be

unearthed, work should be

halted, and the heritage

specialist should be contacted

immediately.

1 1

Low

Minimise the

impact on heritage

resources



programme incompliance

with ISO14001.

The management of

heritage resources: In

compliance with the

National Heritage

Resources Act (Act No.

25 of 1999), and

amendments thereto.

2 years


NO. ASPECTS

AFFECTED

ACTIVITY

whether

listed or not

listed

POTENTIAL IMPACT

PHASE

in which impact

is anticipated

SIZE AND

SCALE

of

disturban

ce

SIGNIFICANCE


TYPE

(modify,

remedy,

control, or

stop) through

e.g. noise

control

measures)

MITIGATION MEASURES

SIGNIFICANCE

If mitigated

STANDARD TO

BE ACHIEVED

COMPLIANCE WITH

STANDARDS

TIME PERIOD FOR

IMPLEMENTATION

Impact description

Revers

ibilit

y

Irre

pla

ceab

le lo

ss

Pro

bab

ilit

y

Mag

nit

ud

e

Sig

nif

ican

ce

Pro

bab

ilit

y

Mag

nit

ud

e

Sig

nif

ican

ce

16 Socio-

economic Activity 1 – 26

Impact description: Creation of

Employment



project

Irre

vers

ible

Low

Degre

e

Decommissioning

Phase

Within the

32 ha Positive Control

• Local companies and labour

should be utilized where

possible.

Positive

Increase impact

on local

economy



programme in

compliance with

ISO14001.

Social Labour Plan,

Mining Works

Programme.

2 years

17 Traffic Activity 25

Impact description: Decrease in

general condition of roads and

increased safety risk to third party

road users due to heavy vehicle

traffic on roads.



project

Revers

ible

Low

Degre

e

Decommissioning

Phase

Within the

32 ha 5 3

Hig

h

Control

• Where possible, heavy vehicle

traffic should be discouraged

from using roads during peak

hour traffic times.

• Road signage and speed limits

should be adhered to.

• Any heavy load transport will be

done in consultation with the

Roads Department

• Transport of materials and

waste will comply with the

necessary road regulations.

1 1

Low

Minimise risk on

Road

infrastructure and

safety to third party

road users.

Comply with municipal

and departmental (Roads

Department)

requirements for roads.

National Road Traffic Act;


and amendments

thereto.

2 years


6. Summary of the positive and negative

implications and risks of the proposed activity

and identified alternatives

Table 5: Summary of the negative and positive environmental impacts, after mitigation

NO. ACTIVITY POTENTIAL IMPACT

PHASE

in which impact

is anticipated

SIGNIFICANCE

If mitigated

Air Quality

1 Decommissioning of the

Beneficiation Plant and associated

infrastructure; crushing of building

material and concrete; removal

contaminated soils and transport of

workers; material and waste to and

from site and establishment and

operation of a contractor support

area

Dust generation from internal

access roads and general

demolition and crushing

activities.

Decommissioning

Phase

Low




material and concrete; removal of





area

Unpleasant odours

generated from poorly

maintained/ serviced

portable chemical toilets and

asbestos related emissions

from decommissioning of

buildings and pipelines.

Decommissioning

Phase

Low

3 Removal of contaminated soils to a

permitted landfill site (where

required).

Stored chemicals and

hazardous wastes may

produce noxious or irritating

odours.

Decommissioning

Phase

Low

Ecology









area

Impacts on floral biodiversity

due to alien floral species

invasion/proliferation.

Decommissioning

Phase

Low



PHASE

in which impact

is anticipated

SIGNIFICANCE

If mitigated









area

Destruction of habitat may

impact on floral biodiversity

within the CDM Beneficiation

Plant.

Decommissioning

Phase

Low









area

General disturbance to

overall floral biodiversity due

to dust generation,

indiscriminate fires and

ineffective monitoring.

Decommissioning

Phase

Low

Groundwater









area

Groundwater may become

contaminated by


equipment and machinery,

stored materials at the

contractor support area,

temporarily stockpiled

hazardous waste

Decommissioning

Phase

Low

Noise









area

Increase in ambient noise

levels by demolition related

machinery.


levels by demolition activities

associated with the removal

of redundant structures;

Decommissioning

Phase

Low



PHASE

in which impact

is anticipated

SIGNIFICANCE

If mitigated









area


levels by vehicles removing

material and waste from the

site.

Decommissioning

Phase

Low

Soil and land capability





contaminated soils.

Disposal of potentially

contaminated material.

Decommissioning

Phase

Low









area

Frequent movement of

heavy machinery may lead to

the compaction of valuable

soils.

Decommissioning

Phase

Low









area

Disturbance and removal of

soils may lead to erosional

processes

Decommissioning

Phase

Low









area

Soils may become

contaminated by


construction equipment and

machinery; stored materials

at the contractor support

area, temporarily stockpiled

hazardous waste

Decommissioning

Phase

Low



PHASE

in which impact

is anticipated

SIGNIFICANCE

If mitigated

Visual









area

The visual environment will

change once the

infrastructure has been

decommissioned and the

buildings crushed/broken.

Decommissioning

Phase

Low

Heritage and cultural




material and concrete.

Decommissioning of the

beneficiation plant and

crushing of building

structures could result in a

loss of heritage resources.

Decommissioning

Phase

Low

Socio Economic









area;

Creation of Employment Decommissioning

Phase

Positive

Traffic

17 Transportation of workers, materials

and waste to and from site.

Decrease in general

condition of roads and

increased safety risk to third

party road users due to

heavy vehicle traffic on

roads.

Decommissioning

Phase

Low


7. Cumulative impacts

Cumulative impacts refer to the situation where an activity may in itself not have a significant impact,

but may become significant when added to the existing and potential impacts from similar or different

activities in the area. Cumulative impacts can be defined as “changes to the environment that are

caused by an action in combination with other past, present and future human actions”

(DEAT, 2004). Different types of cumulative impacts can occur, depending on the characteristics

thereof. Table 7 below presents a summary of these cumulative impacts as per Guideline 5:

Assessment of Alternatives and Impacts (DEAT, 2006).

Table 6: Types of cumulative impacts

TYPE DESCRIPTION

Additive Where it adds to the impact which is caused by other

similar impacts.

Interactive impact A cumulative impact is caused by different impacts that

combine to form a new kind of impact.

Countervailing The net adverse cumulative impact is less than the

sum of the individual impacts.

Synergistic The net adverse cumulative impact is greater than the

sum of the individual impacts.

The cumulative impacts as presented in Table 7 below, have been identified.

Table 7: Cumulative impacts

ENVIRONMENTAL

COMPONENT

(ASPECTS

AFFECTED)

ACTIVITY POTENTIAL IMPACT DESCRIPTION

Air Quality Demolition and crushing

of infrastructure.

Impact on the air quality as a result of dust emanating from

the demolition and crushing of buildings and concrete

infrastructure.

Ecology Demolition of

infrastructure.

Destruction of habitat may impact on floral biodiversity within

the CDM Beneficiation Plant.

Groundwater

Hydrocarbons leaking

from equipment and

machinery, stored

materials at the

contractor support area,

temporarily stockpiled

hazardous waste.

Cumulative impact on the ground water due to leaking

hydrocarbons. The contaminated runoff will contaminate

groundwater as a result.

Noise Demolition activities. Increase in ambient noise levels by demolition related

machinery.


ENVIRONMENTAL

COMPONENT

(ASPECTS

AFFECTED)

ACTIVITY POTENTIAL IMPACT DESCRIPTION

Soil and Land

Capability

Movement of heavy

machinery and spillage

of hydrocarbons.

The chemicals and hydrocarbon materials utilised to

demolish structures may cumulatively impact on the quality

of the soil in the event of large spillages.

Visual Decommissioning of the

CDM Beneficiation Plant

.

The visual environment will change once the infrastructure

has been decommissioned and the buildings crushed/broken.

Heritage and

Cultural

Decommissioning of the

CDM Beneficiation Plant.

Decommissioning of the beneficiation plant and crushing of

building structures could result in a loss of heritage

resources.

Socio-economic Utilisation of local

companies during the

decommissioning of the

CDM Beneficiation Plant.

Unemployment in communities close to the CDM could result

in community unrests and strikes for jobs which will lengthen

the project duration.

Traffic Traffic caused by

vehicles/trucks driving to

and from the CDM

Beneficiation Plant.

Nuisance to community and neighbouring residents could

result due to the increase in traffic from the decommissioning

activities, along with current traffic related impacts from

vehicles travelling on the current road network.


8. Proposed impact management objectives and

the impact management outcomes for

inclusion into the EMPr

Based on the assessment and where applicable, the recommendations from specialist reports, the table

below summarises the impact management objectives and the impact management outcomes for the

development for inclusion in the EMPr as well as for inclusion as conditions of authorisation.

Table 8: Impact management objectives and the impact management outcomes

ENVIRONMENTAL

ASPECT OBJECTIVE

SUMMARY OF IMPACT MANAGEMENT

OUTCOME

Air Quality Prevent the deterioration of air

quality

Air quality monitoring programme

Ecology Minimise the loss of species

diversity and prevent the loss of

vegetation

cover. Minimise the disturbance

to the overall floral biodiversity.

Alien & Invasive Species Control Program.

Dust monitoring and dust suppression

Groundwater

Minimise the impact on

Groundwater Quality.

Groundwater monitoring programme

Noise Prevent and mitigate against the

effects of noise on sensitive

receptors.

Noise monitoring programme

Soil and Land

Capability

Reduce/prevent the

contamination of soil and

Minimise the removal of soils.

Soil sampling monitoring.

Waste Management License for salvage yard and

landfill site.

Visual Reduce the visual impact and

sense of the place

Rehabilitation, Decommissioning and Closure

plans and Closure Objectives.

Heritage and Cultural Prevention of damage to heritage

and cultural structures/artefacts.

Apply for the necessary permits from SAHRA if

required and comply with permit requirements.

Socio-economic Prevent socio economic impacts

by employment opportunities.

Local companies and labour should be utilized

where possible.

Traffic Prevent dangerous traffic

occurrences and traffic

congestion.

Transport of materials and waste to comply with the

necessary road regulations and requirements.

risk assessment report: decommissioning of parts of …

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