Attachment 5 - Site Assessment and Soil Test for effluent disposal

 

 

Environmental concerns
(e.g. native plants intolerant of phosphorous load, high watertable, swamp, waterway, etc):

Drainage Controls

Depth of seasonal watertable: N/A Is groundwater quality an issue? No
Need for cut off drains/diversions banks: No

Need for surface water collector/cut off drains: No

Treatment plant lid shall be above Q100 flood prone area: N/A

Availability of reserve/setback areas (show details on sketch plan)

Reserve area available for extensions: 100% of design area

Photographs attached: Yes (specify details)

 

SOIL INVESTIGATION

 

Soil Profile Determination: Mark on site plan scaled or dimensioned:
Test Pit: No Borehole: Yes-2 Other: No Please Specify:
Reporting: (Attach Bore Logs): Yes - See Report

 

 

 

 

 

 

 

 

Estimated Soil Category: FIVE
Summary Permeability: 0.06-0.12m/day DIR 3mm/day
Site Test BHI BH2
Soil Category 5 5
GENERAL COMMENTS

 

Remaining matters of concern are:
Type of land application system considered best suited to site and why
Subsurface irrigation - Covered surface pressure drip due to steep slopes and local council requirements.

Overall evaluation of minimum land application area for the site (comprising, absorption area, space between and surrounding the
absorption area elements, setbacks and the reserve area):

Other Comments:

 

SUMMARY (all sections must be completed)

 

Type of System: Advanced Secondary

Type of Disposal Area: Covered surface pressure drip irrigation

Detail of pipe work: As per Plumbing Code

Emitters spacing’s: See site plan Spray spacing’s: N/A

Manifolds: N/A Flush out valves: Yes Air relief valves: Yes

Slope at Disposal Area: 15-25% Surface Irrigation fixed sprinklers only (max 20% slope)

Moveable sprinklers spray area must cover minimum 50% of LAA; N/A Surface Irrigation area to be mulched and planted to ensure
effluent is contained within designated area: YES

Detail of surface pollution control: N/A

Size of diversion mount / Cut of drain: Min 150mm_ Size of retention mount: Not required

Soil modifications: ripped / import soil <@ulched / planted N/A

Bedrooms: 4 Equivalent persons: 6
DIR 3mm/week Litres/person/day: 120
Total Load of all systems on the property over 20 EP: No

Holding Tank position and size on site plan including pump out line position: No