Stage 1 Irrigation Area_90 Beach Rd Noosa North Shore 12.06.2020 · MCU19/0117

EFFLUENT IRRIGATION MANAGEMENT PLAN - STAGE 1 } »
NOOSA NORTH SHORE ECO-TOURISM PORTAL Cc Cardno

 

4.7 Element 2: Effluent Irrigation System Infrastructure

 

RATIONALE:

Failure of components of the irrigation system may result in the
accidental or uncontrolled release of contaminants to receiving
environments. Maintenance and management measures are
required to ensure no significant impacts occur to receiving
environments.

 

OBJECTIVE:

To maintain and manage the effluent irrigation system to prevent
impacts due to accidental effluent release to the receiving
environment.

 

TASKS/
ACTIONS:

e Effluent irrigation infrastructure shall be constructed so as to
eliminate the possibility of spray drift from the area.

e Effluent irrigation pipelines shall be placed underground to
reduce the risk of damage from impact with machinery such as
lawnmowers.

e The underground piping for the irrigation main lines shall be
placed in trenches of 450mm depth and sub-surface drippers
shall be placed at 50mm to 100mm below the surface. Pipe
bedding materials shall consist of sand.

e Prior to backfilling of underground piping, the irrigation system
shall be checked for any leaks or failures within the system and
to ensure that distribution of flow is provided evenly across the
entire irrigation area.

e Fittings with connection to the effluent irrigation system shall be
colour coded and be distinguished from those of the potable
water system to prevent cross-connection. The pipe colour
coding system shall be as follows.

Recycled Water — purple/lilac pipes
Fire suppression water — blue pipes
Potable water — steel or black PVC pipes

e Adequate valving shall be provided in pipelines to allow isolation
for repairs. Bursts within the irrigation system shall be isolated
and repaired as soon as practicable.

e A preventative maintenance program shall be established to
ensure that irrigation equipment is maintained in adequate
operating condition.

 

PERFORMANCE
INDICATORS:

Accidental spills or contamination of receiving environments due to
failures in the irrigation system shall constitute non-compliance with
this EIMP.

 

MONITORING:

 

 

Weekly monitoring shall include visual inspection of all irrigation
system infrastructure including all visible pipelines and fittings, all
pump infrastructure and connections and any stormwater diversion
banks surrounding the irrigation area.

Visual inspection of the condition of all above ground distribution
infrastructure over the site shall be undertaken including all visible
distribution pipes and pump sheds on a weekly basis.

 

 

Petrac Leisure NNS-S Pty Ltd

Version 2 17 July 2006

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