Sedimentation Basin/Constructed Wetland

• Asset ID

• Conducted on

  Date

• Audit conducted by

  Select Leah Strauch Sophie Thomson Enter name

  • Leah Strauch
  • Sophie Thomson
  • Enter name

• Name

• Locality

  Select Balnarring Baxter Bittern Dromana Hastings Mornington Mt Eliza Mt Martha Portsea Rosebud Rye Safety Beach Somerville Sorrento Tyabb OTHER

  • Balnarring
  • Baxter
  • Bittern
  • Dromana
  • Hastings
  • Mornington
  • Mt Eliza
  • Mt Martha
  • Portsea
  • Rosebud
  • Rye
  • Safety Beach
  • Somerville
  • Sorrento
  • Tyabb
  • OTHER
• Address
  Address

• Control

  Council

  Melbourne Water

  Other

• Conditions

  Dry ground conditions

  Wet ground conditions

• Weather

  Select Sunny Overcast Rain Heavy Rain Light Windy Sunny and windy Rain and windy

  • Sunny
  • Overcast
  • Rain Heavy
  • Rain Light
  • Windy
  • Sunny and windy
  • Rain and windy

• Date/Time of last rainfall

  Date

• Photo of entire asset & surroundings

  Media

• Asset function

• Asset Function: (a general description)
  - location
  - catchment
  - key features eg, concrete apron to assist in sediment removal
  - predominant plant species
  - EED
  - current condition

• Type of catchment

• Type of catchment:
  eg. pavement only, grassed, garden beds, residential, industrial, other

2.1 Structures

• Fencing

  Yes

  No

  N/A

• Input description of general condition above

• Steel

• Steel - Rating

• Timber

• Timber - Rating

• Other

• Rating

• Edges

  Yes

  No

  N/A

• Input description of general condition above

• Concrete

• Concrete - Rating

• Timber

• Timber - Rating

• Other

• Rating

• Signage

  Yes

  No

  N/A

• Signage - Rating

• Bollards

  Yes

  No

  N/A

• Timber

• Timber - Rating

• Steel

• Steel - Rating

• Other

• Rating

2.2 Surfaces

• Road

  Yes

  No

  N/A

• Asphalt

• Asphalt - Rating

• Footpath

  Yes

  No

  N/A

• Concrete

• Concrete - Rating

• Aggregate footpath

• Aggregate footpath - Rating

• Other

• Rating

3.1 Inlet

• Can the inlet be located?

  Yes

  No

  N/A

• Include number of inlets, and photographs of each one

• Concrete

• Concrete - Rating

• Timber

• Timber - Rating

• Other material

• Material

• Rating

• is the structure obstructed or blocked?

  Yes

  No

  N/A

• Input photos and free text details. If multiple inlets are present, record % blockage of worst case.

• % blockage (100% = completely blocked)

3.2 Outlet

• Can the outlet be located?

  Yes

  No

  N/A

• Description of outlet (Is outlet pipe submerged? What style of flow control is used? Is the outlet accessible?)

• Concrete

• Concrete - Rating

• Steel

• Concrete - Rating

• Fibreglass composite

• Rating

• Other Material

• Material

• Rating

• is the structure obstructed or blocked?

  Yes

  No

  N/A

• Input photos and details

• % blockage

3.3 Overflow

• Can the overflow/bypass be located?

  Yes

  No

  N/A

• Include overflow description and design/maintenance observations

• Concrete

• Concrete - Rating

• Steel

• Concrete - Rating

• Other material

• Material

• Rating

• is the structure obstructed or blocked?

  Yes

  No

  N/A

• Input photos and free text details

• % blockage

3.4 Weir

• Does the design include any weirs?

  Yes

  No

  N/A

• Include general description of design/maintenance observations

• Concrete

• Concrete - Rating

• Steel

• Concrete - Rating

• Other material

• Material

• Rating

• is the structure obstructed or blocked?

  Yes

  No

  N/A

• % blockage

3.5 Access

• Is vehicle access clearly available to the asset and structures?

  Yes

  No

  N/A

• Concrete

• Concrete - Rating

• Other material

• Material

• Rating

3.6 Other Structures

• Other structures to record?

  Yes

  No

  N/A

• Input component name under details

• Other material

• Material

• Rating

• Other material

• Material

• Rating

• Other material

• Material

• Rating

• is the structure obstructed or blocked?

  Yes

  No

  N/A

• Input photos and free text details

• % blockage

• Other structures to record?

  Yes

  No

  N/A

• Input component name under details

• Other material

• Material

• Rating

• Other material

• Material

• Rating

• Other material

• Material

• Rating

• Condition

4.1 Surface Conditions

• Gross pollutants

  Yes

  No

  N/A

• Add description of pollutants

• Gross pollutants per m2

• Leaf litter

  Yes

  No

  N/A

• % leaf litter coverage

4.2 Erosion

• Erosion of batter slope?

  Yes

  No

  N/A

• Is there erosion near civil structures?

  Yes

  No

  N/A

4.3 Plants

• Approximate vegetated area (m2)

• % coverage

• Are plants in good condition?

  Yes

  No

  N/A

• Include details of species as well as location. Comment on general plant health overall and areas where plant growth may be struggling (eg. at inlets) as well as recommendations for maintenance.

• Average plant height

• Are there trees present?

  Yes

  No

  N/A

• Include details:
  Does tree appear to be in good condition? (evidence of being maintained, removing dead leaves, foliage looks healthy, insect damage etc.)

• Approx height of trees?

• Does the system contain a separate sedimentation basin?

  Yes

  No

  N/A

• Maintenance inspection results from the past 12 months should be consulted to identify ongoing concerns with
  filtration media and vegetation health

• Previous inspections:

5.1 Settling and sedimentation

• Is the sedimentation basin free from any unusual odours or substances?

  Yes

  No

  N/A

• Is the sedimentation basin free from any visible algal issues?

  Yes

  No

  N/A

• Is accumulated sediment visible beneath the water?

  Yes

  No

  N/A

• Approximate depth to sediment below water level

• only attempt to measure this if safe to do so

• Is the sedimentation basin largely open water?

  Yes

  No

  N/A

5.2 Fringe Planting

• Does fringe planting appear to be in good condition?

  Yes

  No

  N/A

• Plants per m2

• Are there weeds present?

  Yes

  No

  N/A

• % coverage

• Is the wetland free from any unusual odours or substances?

  Yes

  No

  N/A

• Is the wetland free from any visible algal issues?

  Yes

  No

  N/A

• Is accumulated sediment visible beneath the water?

  Yes

  No

  N/A

6.1 Wetland zone and planting

• Are varied water depths clearly visible?

  Yes

  No

  N/A

6.2 Fringe planting

• Does fringe planting appear to be in good condition?

  Yes

  No

  N/A

• Plants per m2

• Are there weeds present?

  Yes

  No

  N/A

• % coverage

6.3 Shallow water

• Does shallow water planting appear to be in good condition?

  Yes

  No

  N/A

• Plants per m2

• Are there weeds present?

  Yes

  No

  N/A

• % coverage

6.4 Deeper water

• Does deeper water planting appear to be in good condition?

  Yes

  No

  N/A

• Plants per m2

• Are there weeds present?

  Yes

  No

  N/A

• % coverage

6.5 Open water

• Are open water zones present?

  Yes

  No

  N/A

• Include description/location of open water zones including photographs

6.1 Asset works priority

• Visibility

  High

  Medium

  Low

  N/A

• Visibility: Examples of high visibility are shopping precincts, landscaped public open space, general high traffic areas.

• Catchment

  High

  Medium

  Low

  N/A

• High catchment priority (if able to be determined) includes catchments that outfall directly to the bays, or are upstream of sensitive areas

• Treatment

  High

  Medium

  Low

  N/A

• Treatment: High asset priority (if able to be determined) would include an asset that is the lone treatment in a catchment, or performs a significant proportion of treatment within a catchment

• Surrounds

  High

  Medium

  Low

  N/A

• Surrounds: Examples of low priority are assets in disturbed areas such as residential streets with ongoing construction that will stymie maintenance efforts

6.2 Initial assessment

• Health and Safety issues

• Are there any elements or issues that the assessors consider to be a risk to health and safety? Please provide a full description

• Planned maintenance tasks

  Select Clear inlet/outlet(s) of sediment and debris Scheduled desludging of sedimentation basin Mowing of grass Replacing of grass Prune vegetation Remove dead plants/perform minor infill planting Even out filter media surface/remove sediment or crusting Repair minor structural damage Flush underdrain system Treat for weeds/pests Other

  • Clear inlet/outlet(s) of sediment and debris
  • Scheduled desludging of sedimentation basin
  • Mowing of grass
  • Replacing of grass
  • Prune vegetation
  • Remove dead plants/perform minor infill planting
  • Even out filter media surface/remove sediment or crusting
  • Repair minor structural damage
  • Flush underdrain system
  • Treat for weeds/pests
  • Other

• Corrective maintenance tasks

  Select Hydraulic conductivity assessment Feature and level survey of asset Ongoing assessment over varied weather conditions and seasons Filter media replacement/renewal Creation of flow distribution Level resetting/development of extended detention/significant re-shaping of surface Significant re-vegetation and establishment Reconstruction of civil components Re-design in consultation with client

  • Hydraulic conductivity assessment
  • Feature and level survey of asset
  • Ongoing assessment over varied weather conditions and seasons
  • Filter media replacement/renewal
  • Creation of flow distribution
  • Level resetting/development of extended detention/significant re-shaping of surface
  • Significant re-vegetation and establishment
  • Reconstruction of civil components
  • Re-design in consultation with client

• Initial outcome

  Decomission

  Rectification works

  Planned maintenance only

6.3 Final notes