RIINHB322D - Construct multiple aquifer production bores Competency Mapping Template
Unit of Competency Mapping – Information for Teachers/Assessors – Information for Learners
RIINHB322D Mapping and Delivery Guide Construct multiple aquifer production bores
Version 1.0 Issue Date: March 2024
Qualification
-
Unit of Competency
RIINHB322D - Construct multiple aquifer production bores
Description
Employability Skills
Learning Outcomes and Application
This unit describes a participant’s skills and knowledge required to construct multiple aquifer production bores within Drilling. This unit is appropriate for those working in operational roles.Licensing, legislative, regulatory and certification requirements that apply to this unit can vary between states, territories, and industry sectors. Relevant information must be sourced prior to application of this unit
Duration and Setting
X weeks, nominally xx hours, delivered in a classroom/online/blended learning setting.
An assessor of this unit must satisfy the requirements of the NVR/AQTF or their successors; and Industry regulations for certification and licensing; and,
this unit must be assessed in the context of this sector’s work environment; and,
this unit must be assessed in compliance with relevant legislation/regulation and using policies, procedures, processes and operational manuals directly related to the industry sector for which it is being assessed; and,
assessment may be conducted in conjunction with the assessment of other Units of Competency; and,
assessment must confirm consistent performance can be applied in a range of relevant workplace circumstances; and,
assessors must demonstrate the performance evidence, and knowledge evidence as outlined in this Unit of Competency, and through the minimum years of current* work experience specified below in an Industry sector relevant to the outcomes of the unit; or,
where the assessor does not meet experience requirements a co-assessment or partnership arrangement must exist between the qualified assessor and an Industry subject matter expert. The Industry subject matter expert should hold the unit being assessed (or an equivalent unit) and/or demonstrate equivalence of skills and knowledge at the unit level. An Industry technical expert must also demonstrate skills and knowledge from the minimum years of current work experience specified below in the Industry sector, including time spent in roles related to the unit being assessed; and,
assessor and Industry subject matter expert requirements differ depending on the Australian Qualifications Framework Level (AQF) of the qualification being assessed and/or Industry Sector as follows:
Industry sector
AQF** Level
Required assessor or Industry subject matter expert experience
Drilling, Metalliferous Mining, Coal Mining, Extractive (Quarrying) and Civil Construction
1
1 Year
2
2 Years
Drilling, Coal Mining and Extractive (Quarrying)
3-6
3 Years
Metalliferous Mining and Civil Construction
3-6
5 Years
Other sectors
Where this Unit is being assessed outside of the Resources and Infrastructure Sectors assessor and/or Industry subject matter expert experience should be in-line with industry standards for the sector in which it is being assessed and where no Industry standard is specified should comply with any relevant regulation.
*Assessors can demonstrate current work experience through employment within Industry in a role relevant to the outcomes of the Unit; or, for external assessors this can be demonstrated through exposure to Industry by conducting frequent site assessments across various locations.
**Where a unit is being delivered outside of a Qualification the first numeric character in the Unit code should be considered to indicate the AQF level
Prerequisites/co-requisites
Competency Field
Development and validation strategy and guide for assessors and learners
Student Learning Resources
Handouts Activities
Slides PPT
Assessment 1
Assessment 2
Assessment 3
Assessment 4
Elements of Competency
Performance Criteria
Element: Plan and prepare for multiple aquifer production bores
Access, interpret and apply construct multiple aquifer production bores documentation and ensure the work activity is compliant
Obtain, read, interpret, clarify and confirm work requirements
Identify and address potential risks, hazards and environmental issues and implement control measures
Select and wear personal protective equipment appropriate for work activities
Discuss scope of work with client to gain general agreement on drilling plan
Obtain or sight any licences or permits required under the relevant State/Territory legislation or regulation.
Communicate and coordinate activities with others throughout the work activity
Obtain and interpret emergency procedures, and be prepared for fire/accident/emergency
Provide detailed strata logs, pump and development test results conducted during bore development and water and strata samples to the appropriate authorities
Complete all requirements for bore completion reports, decommissioning or abandonment and send to regulatory authorities within the time specified on bore licence
Element: Design production bores for multiple aquifer systems
Determine most appropriate construction methods from the reading and interpretation of all available documented information and ensure relevant procedures and standards are adhered to
Design the bore to ensure the exclusion of unsuitable waters and to prevent the inter-mixing of aquifers with different water quality or Standing Water Levels
Select a bore site that will prevent contamination and minimise interference with other bores and that is safe with respect to potential occupational health and safety hazards
Select likely water entry mechanism from the formation to the bore such as open hole, slotted casing screens, gravel packs
Plot and interpret sieve analysis results onto graphs
Select appropriate bore/surface casing for the anticipated ground/water quality and pressure conditions and any construction requirements
Ensure all necessary materials anticipated for the job are available and on site prior to commencement of construction phase
Element: Construct production bores in multiple aquifer systems
Carry out any pre-start and start up procedures on plant or ancillary equipment
Identify, select and apply rig operational controls
Assemble and insert casing and screens
Grout or otherwise seal surface casing
Conduct grouting operations to seal intermediate and/or production casing strings or to seal selected zones
Construct bore in accordance with any applicable regulations, minimum construction and organisational requirements
Maintain plumbness and alignment of the hole within the required limitations
Collect, record and label formation and water samples
Maintain records accurately and legibly
Calculate hole, annular, fill or pack materials and mud pit volumes in cubic metres or litres
Select and place stabilising gravel fill as required
Determine appropriate artificial pack material grain size
Place artificial pack material in a manner that will ensure uniform distribution in the annular space without bridging
Maintain tool string inventories
Identify and protect headworks of the bore
Construct headworks to seal and cap the bore from surface water pollutants, environmental concerns and damage
Incorporate methods for measuring static and pumping water levels in headworks and for adequate sealing when not in use
Dispose of wastewater or hazardous materials from site and complete restoration of the bore site
Element: Develop bore
Use development techniques with care to prevent collapsing of casing or screens
Use development techniques to improve hydraulic transmissivity around the bore
Undertake development until a continuous, clean supply of water is obtained, in accordance with site, contractual or regulatory requirements
Measure/calculate and record standing and drawdown water levels
Perform tests to estimate the sustainable yield of the bore
Element: Disinfect/decontaminate bore and drilling equipment
Disinfect/decontaminate to comply with relevant standards or regulatory requirements
Handle hazardous chemicals in accordance with safety data sheets (SDS)
Element: Carry out bore maintenance and rehabilitation
Carry out and shutdown procedures and secure equipment
Research all aspects of the bore construction and history
Undertake a process of diagnosis by testing and measurement to determine likely cause of bore deterioration
Devise a program of rehabilitation to ensure that the bore is restored to a reasonable condition
Element: Decommission test/bore holes
Determine suitable decommissioning procedures and select appropriate sealing materials and placement methods
Carry out the decommissioning (abandonment) of test holes or bore holes in single and multiple aquifer systems
Seal bore with surface caps and cover borecap with 300mm local soil
Verify position/location of hole for future reference
Dispose of drill and other fluids safely
Element: Plan and prepare for multiple aquifer production bores
Access, interpret and apply construct multiple aquifer production bores documentation and ensure the work activity is compliant
Obtain, read, interpret, clarify and confirm work requirements
Identify and address potential risks, hazards and environmental issues and implement control measures
Select and wear personal protective equipment appropriate for work activities
Discuss scope of work with client to gain general agreement on drilling plan
Obtain or sight any licences or permits required under the relevant State/Territory legislation or regulation.
Communicate and coordinate activities with others throughout the work activity
Obtain and interpret emergency procedures, and be prepared for fire/accident/emergency
Provide detailed strata logs, pump and development test results conducted during bore development and water and strata samples to the appropriate authorities
Complete all requirements for bore completion reports, decommissioning or abandonment and send to regulatory authorities within the time specified on bore licence
Element: Design production bores for multiple aquifer systems
Determine most appropriate construction methods from the reading and interpretation of all available documented information and ensure relevant procedures and standards are adhered to
Design the bore to ensure the exclusion of unsuitable waters and to prevent the inter-mixing of aquifers with different water quality or Standing Water Levels
Select a bore site that will prevent contamination and minimise interference with other bores and that is safe with respect to potential occupational health and safety hazards
Select likely water entry mechanism from the formation to the bore such as open hole, slotted casing screens, gravel packs
Plot and interpret sieve analysis results onto graphs
Select appropriate bore/surface casing for the anticipated ground/water quality and pressure conditions and any construction requirements
Ensure all necessary materials anticipated for the job are available and on site prior to commencement of construction phase
Element: Construct production bores in multiple aquifer systems
Carry out any pre-start and start up procedures on plant or ancillary equipment
Identify, select and apply rig operational controls
Assemble and insert casing and screens
Grout or otherwise seal surface casing
Conduct grouting operations to seal intermediate and/or production casing strings or to seal selected zones
Construct bore in accordance with any applicable regulations, minimum construction and organisational requirements
Maintain plumbness and alignment of the hole within the required limitations
Collect, record and label formation and water samples
Maintain records accurately and legibly
Calculate hole, annular, fill or pack materials and mud pit volumes in cubic metres or litres
Select and place stabilising gravel fill as required
Determine appropriate artificial pack material grain size
Place artificial pack material in a manner that will ensure uniform distribution in the annular space without bridging
Maintain tool string inventories
Identify and protect headworks of the bore
Construct headworks to seal and cap the bore from surface water pollutants, environmental concerns and damage
Incorporate methods for measuring static and pumping water levels in headworks and for adequate sealing when not in use
Dispose of wastewater or hazardous materials from site and complete restoration of the bore site
Element: Develop bore
Use development techniques with care to prevent collapsing of casing or screens
Use development techniques to improve hydraulic transmissivity around the bore
Undertake development until a continuous, clean supply of water is obtained, in accordance with site, contractual or regulatory requirements
Measure/calculate and record standing and drawdown water levels
Perform tests to estimate the sustainable yield of the bore
Element: Disinfect/decontaminate bore and drilling equipment
Disinfect/decontaminate to comply with relevant standards or regulatory requirements
Handle hazardous chemicals in accordance with safety data sheets (SDS)
Element: Carry out bore maintenance and rehabilitation
Carry out and shutdown procedures and secure equipment
Research all aspects of the bore construction and history
Undertake a process of diagnosis by testing and measurement to determine likely cause of bore deterioration
Devise a program of rehabilitation to ensure that the bore is restored to a reasonable condition
Element: Decommission test/bore holes
Determine suitable decommissioning procedures and select appropriate sealing materials and placement methods
Carry out the decommissioning (abandonment) of test holes or bore holes in single and multiple aquifer systems
Seal bore with surface caps and cover borecap with 300mm local soil
Verify position/location of hole for future reference
Dispose of drill and other fluids safely
Evidence Required
List the assessment methods to be used and the context and resources required for assessment. Copy and paste the relevant sections from the evidence guide below and then re-write these in plain English.
1. Plan and prepare for multiple aquifer production bores
1.1 Access, interpret and apply construct multiple aquifer production bores documentation and ensure the work activity is compliant
1.2 Obtain, read, interpret, clarify and confirm work requirements
1.3 Identify and address potential risks, hazards and environmental issues and implement control measures
1.4 Select and wear personal protective equipment appropriate for work activities
1.5 Discuss scope of work with client to gain general agreement on drilling plan
1.6 Obtain or sight any licences or permits required under the relevant State/Territory legislation or regulation.
1.7 Communicate and coordinate activities with others throughout the work activity
1.8 Obtain and interpret emergency procedures, and be prepared for fire/accident/emergency
1.9 Provide detailed strata logs, pump and development test results conducted during bore development and water and strata samples to the appropriate authorities
1.10 Complete all requirements for bore completion reports, decommissioning or abandonment and send to regulatory authorities within the time specified on bore licence
2. Design production bores for multiple aquifer systems
2.1 Determine most appropriate construction methods from the reading and interpretation of all available documented information and ensure relevant procedures and standards are adhered to
2.2 Design the bore to ensure the exclusion of unsuitable waters and to prevent the inter-mixing of aquifers with different water quality or Standing Water Levels
2.3 Select a bore site that will prevent contamination and minimise interference with other bores and that is safe with respect to potential occupational health and safety hazards
2.4 Select likely water entry mechanism from the formation to the bore such as open hole, slotted casing screens, gravel packs
2.7 Plot and interpret sieve analysis results onto graphs
2.8 Select appropriate bore/surface casing for the anticipated ground/water quality and pressure conditions and any construction requirements
2.9 Ensure all necessary materials anticipated for the job are available and on site prior to commencement of construction phase
3. Construct production bores in multiple aquifer systems
3.1 Carry out any pre-start and start up procedures on plant or ancillary equipment
3.2 Identify, select and apply rig operational controls
3.3 Assemble and insert casing and screens
3.4 Grout or otherwise seal surface casing
3.5 Conduct grouting operations to seal intermediate and/or production casing strings or to seal selected zones
3.6 Construct bore in accordance with any applicable regulations, minimum construction and organisational requirements
3.7 Maintain plumbness and alignment of the hole within the required limitations
3.8 Collect, record and label formation and water samples
3.9 Maintain records accurately and legibly
3.10 Calculate hole, annular, fill or pack materials and mud pit volumes in cubic metres or litres
3.11 Select and place stabilising gravel fill as required
3.12 Determine appropriate artificial pack material grain size
3.13 Place artificial pack material in a manner that will ensure uniform distribution in the annular space without bridging
3.14 Maintain tool string inventories
3.15 Identify and protect headworks of the bore
3.16 Construct headworks to seal and cap the bore from surface water pollutants, environmental concerns and damage
3.17 Incorporate methods for measuring static and pumping water levels in headworks and for adequate sealing when not in use
3.18 Dispose of wastewater or hazardous materials from site and complete restoration of the bore site
4. Develop bore
4.1 Use development techniques with care to prevent collapsing of casing or screens
4.2 Use development techniques to improve hydraulic transmissivity around the bore
4.3 Undertake development until a continuous, clean supply of water is obtained, in accordance with site, contractual or regulatory requirements
4.4 Measure/calculate and record standing and drawdown water levels
4.5 Perform tests to estimate the sustainable yield of the bore
5. Disinfect/decontaminate bore and drilling equipment
5.1 Disinfect/decontaminate to comply with relevant standards or regulatory requirements
5.2 Handle hazardous chemicals in accordance with safety data sheets (SDS)
6. Carry out bore maintenance and rehabilitation
6.1 Carry out and shutdown procedures and secure equipment
6.2 Research all aspects of the bore construction and history
6.3 Undertake a process of diagnosis by testing and measurement to determine likely cause of bore deterioration
6.4 Devise a program of rehabilitation to ensure that the bore is restored to a reasonable condition
7. Decommission test/bore holes
7.1 Determine suitable decommissioning procedures and select appropriate sealing materials and placement methods
7.2 Carry out the decommissioning (abandonment) of test holes or bore holes in single and multiple aquifer systems
7.3 Seal bore with surface caps and cover borecap with 300mm local soil
7.4 Verify position/location of hole for future reference
7.5 Dispose of drill and other fluids safely
Evidence is required to be collected that demonstrates a candidate’s competency in this unit. Evidence must be relevant to the roles within this sector’s work operations and satisfy all of the requirements of the performance criteria of this unit and include evidence that the candidate:
locates and applies relevant legislation, documentation, policies and procedures
implements the requirements, procedures and techniques for the safe, effective and efficient completion of multiple aquifer production bore construction including:
performing aquifer sand sieve analysis tests
calculating the specific capacity of a bore
calculating grout component quantities, i.e. cement powder, water and other additives as required
calculating hole and annular volumes
calculating grout/mud specific gravity
determining grain size and selection of appropriate artificial pack material
works effectively with others to undertake and complete the construction of multiple aquifer production bores that meets all of the required outcomes including:
complying with written and verbal reporting requirements and procedures
communicating clearly and concisely with others to receive and clarify work instructions
communicating clearly and concisely with others to resolve coordination requirements prior to commencing and during work activities
demonstrates completion of the construction of multiple aquifer production bores that safely, effectively and efficiently meets all of the required outcomes on more than one (1) occasion including:
designing the bore to ensure the exclusion of unsuitable waters and to prevent the inter-mixing of aquifers with different water quality or Standing Water Levels
selecting a bore site that will prevent contamination and minimise interference with other bores and that is safe with respect to potential occupational health and safety hazards
selecting likely water entry mechanism from the formation to the bore such as open hole, slotted casing screens, gravel packs
assembling and inserting casing and screens
completing grouting operations to seal intermediate and/or production casing strings or to seal selected zones
maintaining plumbness and alignment of the hole within the required limitations
continuing development until a continuous, clean supply of water is obtained, in accordance with site, contractual or regulatory requirements
performing tests to estimate the sustainable yield of the bore
The candidate must demonstrate knowledge in constructing multiple aquifer production bores through:
work, health and safety
environmental issues
operating drill rig
housekeeping
identifying with the equipment characteristics, technical capabilities and limitations
testing for alignment and plumbness of bores
hole preparation for cementing (grouting) operations
effects of various cement (grout) additives
pressure cementing methods
casing collapse characteristics
applications for wire-wound screens
screen design parameters to ensure appropriate entrance velocities
interpreting the sieve analysis results
observing the objectives of bore development
types of drilling fluids
grout placement methods and procedures
range of numerical calculations to calculate:
volume (e.g. mud pits, drums, tanks or bore holes of given dimensions, annulus)
up hole velocity
cement/water/additives quantities
screen design parameters
flow rates (e.g. L/sec, GPM)
conversion from imperial to metric and vice versa
conducting a sieve analysis
understanding the appropriate fishing operations for the type(s) of drilling being undertaken
reading, interpreting and applying the required safety data sheets (SDS)
being prepared for fire/accident/emergency
Submission Requirements
List each assessment task's title, type (eg project, observation/demonstration, essay, assignment, checklist) and due date here
Assessment task 1: [title] Due date:
(add new lines for each of the assessment tasks)
Assessment Tasks
Copy and paste from the following data to produce each assessment task. Write these in plain English and spell out how, when and where the task is to be carried out, under what conditions, and what resources are needed. Include guidelines about how well the candidate has to perform a task for it to be judged satisfactory.
1. Plan and prepare for multiple aquifer production bores
1.1 Access, interpret and apply construct multiple aquifer production bores documentation and ensure the work activity is compliant
1.2 Obtain, read, interpret, clarify and confirm work requirements
1.3 Identify and address potential risks, hazards and environmental issues and implement control measures
1.4 Select and wear personal protective equipment appropriate for work activities
1.5 Discuss scope of work with client to gain general agreement on drilling plan
1.6 Obtain or sight any licences or permits required under the relevant State/Territory legislation or regulation.
1.7 Communicate and coordinate activities with others throughout the work activity
1.8 Obtain and interpret emergency procedures, and be prepared for fire/accident/emergency
1.9 Provide detailed strata logs, pump and development test results conducted during bore development and water and strata samples to the appropriate authorities
1.10 Complete all requirements for bore completion reports, decommissioning or abandonment and send to regulatory authorities within the time specified on bore licence
2. Design production bores for multiple aquifer systems
2.1 Determine most appropriate construction methods from the reading and interpretation of all available documented information and ensure relevant procedures and standards are adhered to
2.2 Design the bore to ensure the exclusion of unsuitable waters and to prevent the inter-mixing of aquifers with different water quality or Standing Water Levels
2.3 Select a bore site that will prevent contamination and minimise interference with other bores and that is safe with respect to potential occupational health and safety hazards
2.4 Select likely water entry mechanism from the formation to the bore such as open hole, slotted casing screens, gravel packs
2.7 Plot and interpret sieve analysis results onto graphs
2.8 Select appropriate bore/surface casing for the anticipated ground/water quality and pressure conditions and any construction requirements
2.9 Ensure all necessary materials anticipated for the job are available and on site prior to commencement of construction phase
3. Construct production bores in multiple aquifer systems
3.1 Carry out any pre-start and start up procedures on plant or ancillary equipment
3.2 Identify, select and apply rig operational controls
3.3 Assemble and insert casing and screens
3.4 Grout or otherwise seal surface casing
3.5 Conduct grouting operations to seal intermediate and/or production casing strings or to seal selected zones
3.6 Construct bore in accordance with any applicable regulations, minimum construction and organisational requirements
3.7 Maintain plumbness and alignment of the hole within the required limitations
3.8 Collect, record and label formation and water samples
3.9 Maintain records accurately and legibly
3.10 Calculate hole, annular, fill or pack materials and mud pit volumes in cubic metres or litres
3.11 Select and place stabilising gravel fill as required
3.12 Determine appropriate artificial pack material grain size
3.13 Place artificial pack material in a manner that will ensure uniform distribution in the annular space without bridging
3.14 Maintain tool string inventories
3.15 Identify and protect headworks of the bore
3.16 Construct headworks to seal and cap the bore from surface water pollutants, environmental concerns and damage
3.17 Incorporate methods for measuring static and pumping water levels in headworks and for adequate sealing when not in use
3.18 Dispose of wastewater or hazardous materials from site and complete restoration of the bore site
4. Develop bore
4.1 Use development techniques with care to prevent collapsing of casing or screens
4.2 Use development techniques to improve hydraulic transmissivity around the bore
4.3 Undertake development until a continuous, clean supply of water is obtained, in accordance with site, contractual or regulatory requirements
4.4 Measure/calculate and record standing and drawdown water levels
4.5 Perform tests to estimate the sustainable yield of the bore
5. Disinfect/decontaminate bore and drilling equipment
5.1 Disinfect/decontaminate to comply with relevant standards or regulatory requirements
5.2 Handle hazardous chemicals in accordance with safety data sheets (SDS)
6. Carry out bore maintenance and rehabilitation
6.1 Carry out and shutdown procedures and secure equipment
6.2 Research all aspects of the bore construction and history
6.3 Undertake a process of diagnosis by testing and measurement to determine likely cause of bore deterioration
6.4 Devise a program of rehabilitation to ensure that the bore is restored to a reasonable condition
7. Decommission test/bore holes
7.1 Determine suitable decommissioning procedures and select appropriate sealing materials and placement methods
7.2 Carry out the decommissioning (abandonment) of test holes or bore holes in single and multiple aquifer systems
7.3 Seal bore with surface caps and cover borecap with 300mm local soil
7.4 Verify position/location of hole for future reference
7.5 Dispose of drill and other fluids safely
Copy and paste from the following performance criteria to create an observation checklist for each task. When you have finished writing your assessment tool every one of these must have been addressed, preferably several times in a variety of contexts. To ensure this occurs download the assessment matrix for the unit; enter each assessment task as a column header and place check marks against each performance criteria that task addresses.
Observation Checklist
Tasks to be observed according to workplace/college/TAFE policy and procedures, relevant legislation and Codes of Practice
Yes
No
Comments/feedback
Access, interpret and apply construct multiple aquifer production bores documentation and ensure the work activity is compliant
Obtain, read, interpret, clarify and confirm work requirements
Identify and address potential risks, hazards and environmental issues and implement control measures
Select and wear personal protective equipment appropriate for work activities
Discuss scope of work with client to gain general agreement on drilling plan
Obtain or sight any licences or permits required under the relevant State/Territory legislation or regulation.
Communicate and coordinate activities with others throughout the work activity
Obtain and interpret emergency procedures, and be prepared for fire/accident/emergency
Provide detailed strata logs, pump and development test results conducted during bore development and water and strata samples to the appropriate authorities
Complete all requirements for bore completion reports, decommissioning or abandonment and send to regulatory authorities within the time specified on bore licence
Determine most appropriate construction methods from the reading and interpretation of all available documented information and ensure relevant procedures and standards are adhered to
Design the bore to ensure the exclusion of unsuitable waters and to prevent the inter-mixing of aquifers with different water quality or Standing Water Levels
Select a bore site that will prevent contamination and minimise interference with other bores and that is safe with respect to potential occupational health and safety hazards
Select likely water entry mechanism from the formation to the bore such as open hole, slotted casing screens, gravel packs
Plot and interpret sieve analysis results onto graphs
Select appropriate bore/surface casing for the anticipated ground/water quality and pressure conditions and any construction requirements
Ensure all necessary materials anticipated for the job are available and on site prior to commencement of construction phase
Carry out any pre-start and start up procedures on plant or ancillary equipment
Identify, select and apply rig operational controls
Assemble and insert casing and screens
Grout or otherwise seal surface casing
Conduct grouting operations to seal intermediate and/or production casing strings or to seal selected zones
Construct bore in accordance with any applicable regulations, minimum construction and organisational requirements
Maintain plumbness and alignment of the hole within the required limitations
Collect, record and label formation and water samples
Maintain records accurately and legibly
Calculate hole, annular, fill or pack materials and mud pit volumes in cubic metres or litres
Select and place stabilising gravel fill as required
Determine appropriate artificial pack material grain size
Place artificial pack material in a manner that will ensure uniform distribution in the annular space without bridging
Maintain tool string inventories
Identify and protect headworks of the bore
Construct headworks to seal and cap the bore from surface water pollutants, environmental concerns and damage
Incorporate methods for measuring static and pumping water levels in headworks and for adequate sealing when not in use
Dispose of wastewater or hazardous materials from site and complete restoration of the bore site
Use development techniques with care to prevent collapsing of casing or screens
Use development techniques to improve hydraulic transmissivity around the bore
Undertake development until a continuous, clean supply of water is obtained, in accordance with site, contractual or regulatory requirements
Measure/calculate and record standing and drawdown water levels
Perform tests to estimate the sustainable yield of the bore
Disinfect/decontaminate to comply with relevant standards or regulatory requirements
Handle hazardous chemicals in accordance with safety data sheets (SDS)
Carry out and shutdown procedures and secure equipment
Research all aspects of the bore construction and history
Undertake a process of diagnosis by testing and measurement to determine likely cause of bore deterioration
Devise a program of rehabilitation to ensure that the bore is restored to a reasonable condition
Determine suitable decommissioning procedures and select appropriate sealing materials and placement methods
Carry out the decommissioning (abandonment) of test holes or bore holes in single and multiple aquifer systems
Seal bore with surface caps and cover borecap with 300mm local soil
Verify position/location of hole for future reference
Dispose of drill and other fluids safely
Access, interpret and apply construct multiple aquifer production bores documentation and ensure the work activity is compliant
Obtain, read, interpret, clarify and confirm work requirements
Identify and address potential risks, hazards and environmental issues and implement control measures
Select and wear personal protective equipment appropriate for work activities
Discuss scope of work with client to gain general agreement on drilling plan
Obtain or sight any licences or permits required under the relevant State/Territory legislation or regulation.
Communicate and coordinate activities with others throughout the work activity
Obtain and interpret emergency procedures, and be prepared for fire/accident/emergency
Provide detailed strata logs, pump and development test results conducted during bore development and water and strata samples to the appropriate authorities
Complete all requirements for bore completion reports, decommissioning or abandonment and send to regulatory authorities within the time specified on bore licence
Determine most appropriate construction methods from the reading and interpretation of all available documented information and ensure relevant procedures and standards are adhered to
Design the bore to ensure the exclusion of unsuitable waters and to prevent the inter-mixing of aquifers with different water quality or Standing Water Levels
Select a bore site that will prevent contamination and minimise interference with other bores and that is safe with respect to potential occupational health and safety hazards
Select likely water entry mechanism from the formation to the bore such as open hole, slotted casing screens, gravel packs