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Elements and Performance Criteria

  1. Prepare for and conduct water quality sampling.
  2. Prepare for and conduct water quality tests.
  3. Finalise work.

Required Skills

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

Required skills

prepare collect label and preserve water samples

dispose of waste and spent samples correctly

produce reports and logs

plan work activities

conduct basic water quality tests

use and calibrate testing equipment

work effectively as part of a team

perform taskrelated calculations

follow plans and instructions

apply procedures and standards

use literacy skills for verbal and written communication in the assignment

use personal protective clothing and equipment

Required knowledge

types and purposes of water samples

procedures and techniques for water sampling

range and purpose of basic water quality testing

test procedures

procedures for disposal of waste and excess water samples

taskrelated calculations

relevant policies procedures and standards

assignment planning processes

Evidence Required

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 collect and prepare water samples and perform water flow and quality tests according to specified standards and parameters relevant to water quality standards including

identifying potential hazards in water sampling

planning and organising sampling and testing assignment

using appropriate sampling and testing equipment and personal protective clothing and equipment

understanding and applying procedures for water sampling and testing

determining and reporting accurate and relevant results from testing

Context of and specific resources for assessment

Access to resources including

library water enterprise information information sources for research and investigation

mentors advisors and teachers able to guide and support research and investigation of water resource management

guided visits to key locations associated with water resource management

Access must be provided to appropriate learning and assessment support

Assessment processes and techniques must take into account language literacy and cultural factors which might have an impact on the candidates demonstration of competency

Validity and sufficiency of evidence requires that

competency will need to be demonstrated over a variety of assignments and activities reflecting the scope and practical requirements of research and practical assignments

assessment can be through assignments projects excursions and simulated projectbased 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 underpinning knowledge


Range Statement

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.

Samples may include:

grab, composite or flow-weighted composite samples for:

microbiological testing

testing for chemical and physical characteristics.

Sampling locations may include:

raw water supply, including:

surface water

groundwater

water distribution and treatment systems.

Assignment requirements for sampling procedures that may be established in a real or simulated environment may include:

standard procedures

Australian Standards, such as AS/NZS 5667 Water quality - sampling

state Environment Protection Authority sampling guidelines

legislative requirements

safety procedures.

Sampling equipment may include:

buckets or wide-mouthed containers

depth samplers

sample dippers

sterile sample containers:

plastic

glass

test-specific (such as acid washed)

weighted sample bottles

dip tubes

composite and discrete automatic samplers

equipment for preservation of samples, including:

refrigeration

cool storage devices

screw top containers

containers for storing and carrying samples safely.

Integrity of samples is maintained by ensuring:

application of correct:

holding time

storage procedures

sub-sampling procedures.

Plan testing work to address a range of requirements, including:

timelines

communication with other team members and individuals

interpretation of organisational and statutory requirements

locations, such as:

on-site testing

field-based testing

laboratory

range of testing procedures and techniques that applies to organisational, plant or field sites

variety of samples to be tested

testing equipment to be used

test reporting systems.

Standard practice for testing procedures that may be established in a real or simulated environment, may include:

standard procedures for testing

equipment manufacturers' operations manuals

methods recommended by Australian Public Health Association (APHA) reference document: 'Standard methods for the examination of water and wastewater'

methods recommended by American Society for Testing Materials (ASTM) International

safety procedures, including:

risk and hazard assessment

safe handling of samples and chemicals

use of personal protective clothing and equipment

relevant organisational policies

local authority regulations and federal, state or territory legislative requirements.

Basic water quality tests include the range of tests required for competent performance of work tasks in an organisational context, and should comprise at least three of the following types of test:

pH

temperature

electrical conductivity

microscopy

turbidity

colour

chlorine residue

jar testing

alkalinity

hardness

dissolved oxygen.

Records may include:

sample records, field detail sheets or chain of custody forms, including information such as:

time sample was taken

details of person collecting sample

sample point

volume of sample

data gathered at time of collection

pre-treatment

preservation

instructions to transporters

time and logging of sample receipt and testing

visual observations

equipment identification

atypical results

test results.