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 implement and manage the water treatment processes' management plan including the treatment of raw water supplies to potable standards including:

gathering, interpreting and synthesising information (including historical system data, current legislation and standards, stakeholder views and monitoring results) required to implement and monitor a water treatment processes monitoring plan

ensuring monitoring and testing programs are run efficiently and effectively

using data from monitoring arrangements to track the performance of the water treatment processes monitoring plan and inform the review of the plan

preparing reports and recommendations for changes to the objectives of the management plan and its implementation

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/or 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, any cultural issues that may affect responses to the questions, and reflecting the requirements of the competency and the work being performed.

This describes the essential skills and knowledge and their level, required for this unit.

Required skills:

communicate effectively

plan effectively

prepare reports

interpret and apply legislation and policies

coordinate measuring and testing activities

use mathematical and scientific techniques to interpret test results

conduct investigations

assess environmental impacts

use data to inform planning processes

coordinate operations and maintenance activities

Required knowledge:

relevant legislation

laboratory procedures

range of appropriate measuring and testing procedures

investigation procedures

customer expectations and requirements

environmental legislation

enterprise financial systems and key performance indicators

occupational health and safety legislation

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 if the candidate, accessibility of the item, and local industry and regional contexts.

Monitoring may include:

process control monitoring

mechanical and electrical maintenance schedules

mechanical and electrical equipment condition

licensing requirements

legislative requirements

chemical, physical, biological and microbiological quality

Testing may include but not be limited by:

physical analysis of water:

pH

conductivity

colour

turbidity

chemical analysis of water:

chlorine

alkalinity

chemical oxygen demand

heavy metals

iron

manganese

microbiological analyses:

coliforms

plate counts

algae identification and counts

physical measures:

power

chemicals

water flows

sludge volumes

mechanical testing:

vibration

noise

temperature

Environmental factors that impact on the treatment process may include:

flora

fauna

organic and inorganic chemicals

salinity (in a marine environment)

nutrients

oils and greases

pesticides

trade waste

upstream communities and activities

natural events (e.g. floods, fires)

algae

micro-organisms

geology of catchment

tastes and odours

Customers may include:

individual consumers

regulators

suppliers

government

community or specific enterprises

industry

rural consumers

internal and external customers

Issues and resources to be considered may include:

chemicals used/usage

electricity used/usage

gas used/usage

people available

technical skills and training

funds available for capital and/or operation

maintenance standards of plant and equipment

maintenance procedures and schedules

union expectations

community expectations

the natural environment

the built environment

occupational health and safety requirements