Elements and Performance Criteria

The range statement relates to the unit of competency as a whole. It allows for different work environments and situations that may affect performance. Bold italicised wording, if used in the performance criteria, is detailed below. Add any essential operating conditions that may be present with training and assessment depending on the work situation, needs of the candidate, accessibility of the item, and local industry and regional contexts.
Equipment, tools and safety materials may include:
electronic monitoring and metering systems
recording systems
basic hand and power tools
sampling and laboratory testing and equipment
computerised equipment
communication equipment
personal protective equipment
Organisational requirements may include:
codes of practice, associated standards and guidance material
documented organisational policies, manuals and induction programs which may refer to legislation and/or regulations
relevant community planning and development agreements, such as land care agreements
Routine plant inspections may include:
interaction and communication with other employees, other authorities and general public
visual observation
identification of corrosion damage
Processes may include:
screening
gravity and aerated grit chambers
gross pollution traps
removal and disposal of screenings
shredding
odour removal
oily water separators
riffle plate separators
Tests may include:
settling tests
pH
dissolved oxygen
suspended solids
chemical oxygen demand
System adjustments may include:
pH correction
dissolved oxygen levels
flow control
screen rotation frequency
solids removal
chemical additions
Reports may include:
plant performance data
chemical usage

The evidence guide provides advice on assessment and must be read in conjunction with the performance criteria, required skills and knowledge, the range statement and the Assessment Guidelines for the Training Package.
Critical aspects for assessment and evidence required to demonstrate competency in this unit
The candidate should demonstrate the ability to monitor, operate and report on wastewater pre-treatment processes including:
planning and preparing for work
collecting and labelling samples and performing tests
inspecting plant and monitoring processes
collecting and recording data
operating and adjusting processes
recording all required information
Context of and specific resources for assessment
Access to the workplace and resources including:
documentation that should normally be available in a water industry organisation
relevant codes, standards and government regulations
Where applicable, physical resources should include equipment modified for people with disabilities.
Access must be provided to appropriate learning and assessment support when required.
Assessment processes and techniques must be culturally appropriate, and appropriate to the language and literacy capacity of the candidate and the work being performed.
Validity and sufficiency of evidence requires that:
competency will need to be demonstrated over a period of time reflecting the scope of the role and the practical requirements of the workplace
where the assessment is part of a structured learning experience the evidence collected must relate to a number of performances assessed at different points in time and separated by further learning and practice
a decision of competence should only be made when the assessor has complete confidence in the person's competence over time and in various contexts
all assessment that is part of a structured learning experience must include a combination of direct, indirect and supplementary evidence
where assessment is for the purpose of recognition (RCC/RPL), the evidence provided will need to be authenticated and show that it represents competency demonstrated over a period of time
assessment can be through simulated project-based activity and must include evidence relating to each of the elements in this unit
In all cases where practical assessment is used it will be combined with targeted questioning to assess the underpinning knowledge. Questioning will be undertaken in a manner appropriate to the skill levels of the operator and cultural issues that may affect responses to the questions, and will reflect the requirements of the competency and the work being performed.