Effluent Disposal Report

Page 2

1.0 INTRODUCTION

In accordance with the relevant codes, standards and Noosa Councils’ guidelines,
Unearthed Geotechnical P/L was commissioned to undertake a Site and Soil
Evaluation at

Lot 4 on RP905954 ('26) Little Springs Lane, Lake Macdonald.

The results form the basis of our recommendations for the on-site treatment and
disposal of wastewater from the proposed house and shed on this 7132 square-metre
allotment.

Our site investigation fieldwork was performed on 2/09/2020 after generally fine
weather in the course of the preceding weeks.

1.1‘ Report Limitations

Field Test Limitations The soil profiles detailed in this report should be
representative of the soil conditions over this site. In some cases conditions can
change dramatically over short distances. If site works reveal soil conditions that are
different from those shown in the attached data, the evaluator must be informed
immediately as changes may be necessary.

Client Supplied Information we have considered the information supplied to us by
the client. Should the client have omitted to supply us with relevant information or
supplied us with incorrect information our assessment may be irrelevant and/or
inappropriate. We do not take responsibility for the consequences in such cases and
may incur additional costs if as a result; more testing or re-writing is necessary.

13 Copyright

The drawings, specifications and other documents provided by Unearthed
Geotechnical P/L remain the property of the Unearthed Geotechnical P/L. Upon
receipt of full payment for our service the client is licensed to use the drawings,
specifications and other documents for the work/s for which they were commissioned.
They shall not be used for any other work except by agreement with Unearthed
Geotechnical P/L. Copyright in all the drawings, specifications and other documents
remain the property of Unearthed Geotechnical P/L.

 

Unearthed Geotechnical P/L. 1 Design Report 020-212

Page 3

2.0 SITE AND SOIL EVALUATION

The field and officework undertaken for our site and soil evaluation consisted of
 _adesk top study in accordance with the regulatory authority

a comprehensive assessment to record topography, geography and geology etc
the confirmation of expected available areas and delineation of exclusion areas
the assessment of site exposure and suitability

a detailed subsoil investigation recording characteristics and limitations

the determination of Soil Category, Colour, Texture, and Structure

the determination of Indicative Drainage and Permeability

soil observation boreholes (75-100 mm dia. Jarret style hand augers),

the calculation of the Design Loading Rate (DLR)

the collation and evaluation of the results from the above studies

Se Be Bo Te Ge Be_ Ge Ge Go. Pe

(The test locations were not professionally surveyed and should be considered approximate)
(All fieldwork performed in accordance with the relevant Australian Standards and Codes)
(All boreholes backfilled in accordance with Occupational Health and Safety regulations)

The purpose of this site and soil evaluation is to ensure that a suitable on-site sewage
treatment plant/Land Application Facility is selected for this particular site.

In compiling this report we have assessed the existing and historical parameters to
gain a comprehensive overview of the potential for on-site domestic wastewater
management. The scale of, and methodology of our site and soil evaluation is
considered to be adequate, relative to, and indicative of the size of the facility, having
considered the consistent natural soil profile and the availability of suitable land.

 

A full copy of this report and all the accompanying sketches plans details and notes shall be
made available to all present and future owners and or occupiers of the proposed house that
is to be serviced by this Land Application Facility, and to all contractors/suppliers/installers
for quotation and or construction objectives.

 

Unearthed Geotechnical P/L. 2 Design Report 020-212

Page 4

3.0 DESIGN DETERMINATION

We have determined the soil to have the following characteristics

 

 

 

 

 

 

 

 

 

Borehole Nos 3&4
Depth (mm) 0 - 200
Soil Category 5
Indicative Drainage Poor
Structure Strong
Texture ; Light Clay
Indicative Permeability P (metres/day) as Kat 0.12 - 0.5

 

 

For our calculations we have assessed the design flow as follows

 

 
   

 

 

 

 

 

 

DLR (mm/day) (Advanced Enviro-septic™ effluent) 5-8
Hydraulic load (litres/day/person) 120
Design flow Q (litres/day) (equivalent population 5 people) 600
Total System Footprint (m’) =75
Septic Tank minimum size requirement (litres) 3000

 

 

 

Advanced Enviro-septic™ System

 

 

Note — AS/NZS 1547-2012 (Appendix H, Table H1) lists the typical wastewater design flow
allowance for households with an on-site roof water tank supply as 120-litres/person/day (all
wastes). With the installation of standard water reduction fixtures the design flow can be
reduced substantially.

Note — In this instance we have used the maximum DLR of 8 mm/day due to the very highly
structured nature of the Category 5 soil recorded in BH 3 and that we recorded Category 4
soil in BH 4.

Where the design flow ‘Q’, nominated above, is exceeded the area (Ai) may need to be
increased accordingly. This sewerage system is not suitable for accepting waste from
garbage grinders.

 

Unearthed Geotechnical P/L. 3 Design Report 020-212

Page 5

4.0 FINDINGS

All the field information and test results collected during our site investigation and
detailed in this report, including any site plans, log and data sheets together form the
basis of our recommendations for this Land Application Facility.

The soil profile encountered during our investigations, and as reported, was
reasonably and acceptably consistent across the proposed development, and within
our expectations from regional experience and correlation with The Qld Dept of
Mines/Energy Geology Sheet 9445/1999 (Gympie).

The Qld Dept Mines/Energy Geology Sheet 9445/1999 describes the geology as Late
Triassic-Jurassic, Duckinwilla Group, Myrtle Creek Sandstone.

The proposed Land Application Area is on a partially exposed 15-20% southeastern
slope with neighbouring vegetation consisting of grasses and trees.

~ The landform was recorded as natural and partially disturbed.
Slope configuration across the proposed site is determined to be linear planar.

Slope stability problems were not evident during our investigations and expert
evaluation deemed unnecessary.

The susceptibility to flooding from groundwater is low and the indicative drainage
was recorded as imperfect to poor.

No water table was encountered on the day of our site investigation. .
Cobbles and/or boulders in soil profiles are sometimes common and unfortunately we

cannot predict their size or frequency. It has also been our experience that these
floaters can be extremely difficult to excavate with conventional equipment.

 

Unearthed Geotechnical P/L. 4 Design Report 020-212

Page 6

4.1 Limitations

Our site and soil evaluation noted the following limitations which may have an
adverse effect on the performance, serviceability, and sustainability of
environmentally acceptable on-site domestic wastewater management

+ allotment size, configuration and topographic idiosyncrasies

e — separation distance requirements

« areas where geological factors may result in effluent emergence

¢ areas of excessive slope

e areas required for construction or landscaping

In formulating our recommendations we have noted, considered and made allowance
for the effect these limitations will have on the performance, serviceability, and
sustainability of on-site domestic wastewater management. We consider that in line
with the recommendations set out within this report, and with appropriate control
measures in position, sustainable on-site domestic wastewater treatment and disposal
will be achieved.

In consideration of these limitations and with reference to the Queensland Plumbing
and Wastewater Code and AS/NZS1547-2012 On-site Domestic Wastewater
Management, we recommend advanced secondary treatment of all domestic
wastewater flows for the efficient, sustainable and environmentally acceptable
disposal of treated effluent on this allotment. The use of such approved advanced
secondary treatment systems consequentially enables the 30m horizontal separation
distance from the intermittent watercourses/dams to be reduced to 10m, and the
vertical separation distance to be reduced to 300mm.

Although we recorded no existing evidence of eutrification, we believe there is the
potential for eutrification of any associated dam or watercourse if there is nutrient
leakage from any disposal site. However, with our recommended, and appropriate
vegetation planting, with the incorporation of a wastewater treatment system with
nutrient stripping capabilities and with the encouraged use of phosphate free cleaning
products, we believe the reduced potential will be contained.

 

Unearthed Geotechnical P/L. 5 Design Report 020-212

Page 7

5.0 DESIGN RECOMMENDATIONS

We recommend the installation of an Advanced Enviro-septic™ domestic
wastewater system to treat the domestic wastewater to a secondary or advanced
secondary quality.

We recommend the installation of a 3000 litre (min capacity) all-waste septic tank to
treat the domestic wastewater to primary quality (it should be noted that the local
regulatory authority may have larger minimum size requirements than those
recommended).

The final location of the septic tank will be determined on-site by variable
consequences (e.g. finished floor levels, distances, allotment configuration and
topographical constraints) over which we have little control. This final placement
may necessitate the use of a pump and pump well to enable the Land Application
Area to be located above the septic tank.

Notwithstanding the final location of the septic tank and the Land Application Area
particular attention should be paid to protecting any, or all pipework below driveways,
access tracks, or such trafficable areas.

The treated effluent is to be dosed into and along the Advanced Enviro-septic™ pipes.
Thus receiving treated effluent and residuals in a manner and at a rate that enables
their further treatment by natural in-soil stabilisation processes so that the resulting
clarified carriage water is environmentally and hygienically acceptable for
groundwater infiltration or evaporation and plant transpiration into the atmosphere.

Pump systems (if required) shall

e have a storage capacity equal to 50% of the daily flow allowance, and sufficient
to match the electrical starting requirements of the irrigation pump motor

e have performance characteristics that match the hydraulic characteristics of the
irrigation system

* have a discharge of at least 50% greater than the maximum 30-minute flow rate
have a visual and audible alarm system (with muting ability) for breakdown
notification

e not be located adjacent to bedrooms, living rooms or recreational areas of
neighbouring properties

e be contained in an acoustic chamber to reduce noise emission of all equipment to
a level not exceeding 40 dB (measured as fast response at a distance of 1.0m),

e have incorporated into the facility pressure and/or velocity reduction fittings
installed sufficiently distant above the Advanced Enviro-septic™ piping.

The installed system will need capped 100mm diameter sampling ports accessible
above ground to enable analysis or the performance of the system according to
requirements in effect.

The installed system will need Oxygen Demand Vents, as per the Advanced Enviro-
septic™ requirements. Oxygen Demand Vents ensure air is drawn completely
through the Advanced Enviro-septic™ piping.

 

Unearthed Geotechnical P/L. 6 Design Report 020-212

Page 8

Our recommendations do not preclude other or additional Land Application Facilities.

Wastewater Treatment Systems and Land Application Facilities should be designed to
remove as much nitrogen as possible by ammonification, settlement in sludge,
denitrification, long residence times or plant uptake.

Water conservation implementation will reduce the hydraulic load on the Land
Application Facility and subsequently improve its performance and serviceable life.

Effluent quality from the treatment plant must comply with the criteria presented in
the Queensland Plumbing and Wastewater Code and AS/NZS 1547-2012 On-site
Domestic Wastewater Management and be confirmed with the regulatory authority.

 

Unearthed Geotechnical P/L. 7 Design Report 020-212

Page 9

5.1 Installation Notes

All installation works, components and fittings must comply with AS/NZS 1547-
2012 On-site Domestic Wastewater Management, and the Queensland Plumbing and
Wastewater Code, and the local authority. All installation works, components and
fittings must comply with Advanced Enviro-septic™ design & installation manual.
The Advanced Enviro-septic™ pipes must be stored and installed adequately to
prevent contamination of the fabric.

Soils are susceptible to damage during the construction and installation processes.
The natural integrity of the existing soil conditions of the Land Application Area must
be preserved at all stages of the proposed development. Damage to the existing soil
profile must be avoided. The laying of the system sand and sand bed extension must
occur immediately after excavation. The laying of the system sand and particularly
the sand bed extension must be performed without compaction by wheeled vehicles or
machinery.

This facility must not be constructed or installed during or immediately after periods
of wet weather and water must not be allowed to enter the excavation during
construction.

When excavating for the Advanced Enviro-septic™ pipes excavate in small bites
using a bucket fitted with ripper teeth to preserve the permeability characteristics of
the natural soil. Scarify/rake all smeared excavated surfaces. We recommend
ripping the base of the entire excavation, along the contour and parallel to the lay of
pipes, to a depth 200mm before backfilling with sand. We recommend the
application of dolomite/gypsum at a nominal rate when preparing the existing soil.
This will assist with both plant growth and pH control (further applications may be
required during the serviceable life of the Land Application Area).

Particular care should be taken with the layout and construction of supply line
trenching/pipework, as with all drainage, plumbing and electrical trenches to inhibit
surface water infiltration along and into the Land Application Area. If necessary all
supply line excavations and trenching shall be backfilled with interceptors.

Particular care should also be taken with the layout and construction of the Land
Application Area trenching/pipework so that released effluent cannot travel back
along trenching causing excessive soil moisture in some areas.

As with all effluent disposal in Land Application Areas, the release of effluent along
the contours (i.e. level) is both elementary and critical to achieve efficient spread and
even disposal. The trenches/beds must be constructed level.

Correct pipe layout and Land Application Area construction/installation is an essential
part of our recommendations and design. If the site is not prepared in accordance
with our design, or is prepared inadequately or is prepared poorly, inefficiencies may
occur and we do not take responsibility for the consequences in such cases and we
will make an additional charge if as a result, more testing, re-designing or re-writing
of the report is necessary.

 

Unearthed Geotechnical P/L. 8 Design Report 020-212

Page 10

Noosa Council may require an inspection for certification to be carried out before
final approval can be issued. Unearthed Geotechnical P/L recommends an inspection
for certification be carried out by the designer prior to commissioning, and preferably
during construction, to ensure code compliance and that ‘best practice’ principles
have been utilised.

As with all use of sand or distribution aggregate for wastewater treatment and disposal
it is very important to restrict the ingress of finer particles to maintain the integrity of
the expected performance outcomes of the sand or distribution aggregate. To this end
Unearthed Geotechnical P/L suggests the entire bed of sand or distribution aggregate
be covered in an appropriate and approved geotextile fabric to restrict such ingress of
finer soil particles. This will help to maintain the expected performance outcomes of
the sand or distribution aggregate. Without the use of an appropriate and approved
geotextile fabric it is probable that the integrity of the sand or distribution aggregate
will likely be compromised.

The treatment plant/ tanks traps and associated fittings shall be

« constructed of durable materials with expandable and/or flexible connections,

* positioned correctly in relation to boundaries, buildings etc to provide an angle of
repose of at least 30 degrees between the bottom of the footing system/excavation
and the base of any associated excavation

watertight and capable of withstanding loads imposed on the roof and walls
installed so that flotation will not occur when the tank/s is empty

installed on a stable base and to prevent surface water infiltration.

located with good clear access for servicing and desludging operations

located within a designated area to enhance its amenity

be protected from roof water/tank discharge, surface water flow and/or seepage
installed and operated in accordance with regulatory guidelines.

The supply lines to the septic tank must be adequately vented with mosquito proof
cowls fitted to all vents.

The Land Application Area shall

« not be located on land prone to water logging or subject to floodwater inundation
« be sited to be open to prevailing winds and not totally shaded from sunlight

« be protected from roof water discharge, surface water flow and/or seepage

e have no runoff or seepage of the applied effluent beyond the designated area

¢ be regularly inspected and maintained

e have the mandatory signage prominently displayed

¢ have boundaries (fence) to deter grazing animals and casual pedestrian traffic

As the slope configuration was recorded to be linear planar the Land Application Area
shall be protected from surface water infiltration by the installation of an excavated
surface water diversion drain (suggested minimum 1000mm wide and 150mm deep)
and from runoff by the installation of a vegetated track rolled retention
moundAranspiration buffer zone (suggested minimum 1000mm wide and 150mm

high).

 

Unearthed Geotechnical P/L. 9 Design Report 020-212

Page 11

In this instance the existing vegetation, extending more than 30m downslope of the
proposed Land Application Area may be deemed to be satisfactory as the
recommended transpiration buffer zone.

It is essential that all associated stormwater flows from this and neighbouring
allotments, driveways, roads, tanks and roofs are diverted away and well clear of the
proposed Land Application Area by proper final grade of the finished surface.

We recommend the base of the entire excavation and the existing ground
immediately downslope of the AES trench (approximately 1m) shall be ripped, along
the contour and parallel to the lay of pipes, to a depth of 200mm prior to the
construction of the AES installation, whilst adding dolomite/gypsum at nominal rate
of 0.5 kg/sqm.

During the excavation processes we recommend separation of the grey/brown topsoil
(to be spread over the top of the entire installation to facilitate grass growth) from the
orange/brown/grey subsoil which is used to backfill the sand bed.

We further recommend a minimum depth of cover at the low side of the sand bed
extension of 300mm.

5.2 Planting Regime

Plantings improve the efficiency of the system with the uptake of nutrient and natural
transpiration processes. Further qualified advice from local nurserymen and the local
regulatory authority should be preférred when choosing plants that may be more or
less suitable or acceptable to your region. Grasses should be kept well mown and
raked for better evaporative and transpiration processes (avoid throwing grass
clippings onto the Land Application Area). Shrubs should be kept well pruned for
better evaporative and transpiration processes. Endemic vegetation must be retained
and/or reinstated.

Following the site preparation, installation and pre-commissioning tests the Land
Application Area shall be allowed to revegetate with sufficient appropriate shallow
rooting grasses.

Unearthed Geotechnical P/L recommends further assessment regarding planting
requirements be sought prior to, or at the time of installation of the Land Application
Facility. It may be necessary to implement an additional planting regime.

Do not plant shrubs or trees within the surface water diversion drains, as these drains
need to be kept free of obstruction and trash for maximum diversion efficiency.

We recommend the application of dolomite/gypsum at a nominal rate (say 0.5
kg/sqm) to the entire basal area, when preparing the existing soil. This will assist with
both plant growth and/or pH control. Further applications may be required during the
serviceable life of the Land Application Area.

 

Unearthed Geotechnical P/L. 10 Design Report 020-212

Page 12

5.3. Separation Distance Requirements.

One of the most important parameters to consider in the location of Land Application
Areas is the separation distances, both vertical and horizontal. Poorly or
inappropriately selected ground may contribute to the pollution of surface water and
groundwater, ponding and eutrification.

Surface Horizontal Separation distance requirements

 

 

 

oa

 

 

 

 

 

 

 

 

Permanent watercourses (lake/stream/river) 50m 30m 10m
Intermittent watercourses (dams/channels/weirs) 50m 30m 10m
Bore (human and or domestic consumption) 50m 30m 10m
EMT boundary unlined/open stormwater drainage 50m 30m 10m
Property boundaries/paths/walkways 4mdownslope 2 m upslope boundary
Dwellings/play areas 15m 10m spray 10m spray
4m sub/evrd | 4 m sub/evrd
Swimming pool (water edge) 6m 6m 6m
Inground watertank 15m 6m 6m

 

 

 

 

 

Vertical Separation distance requirements

 

 

 

Permanent watertable 1.2m 0.6 m 0.3m

 

Bedrock/hardpan 1.2m 0.6m 0.3 m

 

 

 

 

 

 

5.4 Effluent Quality

Effluent quality requirements must be confirmed with the relevant local council
before proceeding and when tested shall comply with the following;

  

  
 

 
   
        

 

 

 

 

 

 

 

 

: po Be os ne : 2 ga
Biochemical Oxygen Demand (mg/litre) 120-240 <20 <10 ~
Total Suspended Solids (mg/litre) 65-180 <30 <10
Total Nitrogen (mg/litre) 36-45 <30
Total Phosphorous (mg/litre) 6-10 <10
Thermotolerant Coliforms (organisms/100mL) <200 <10

 

 

 

 

 

 

Unearthed Geotechnical P/L. 11 Design Report 020-212

Page 13

6.0 DEFINITIONS

Advanced Secondary treatment system - These systems treat domestic wastewater to
10 mg/L BODs, 10 mg/L TSS standard or better prior to discharge to the land
application area.

Biochemical oxygen demand (BOD) - A measure of the amount of oxygen used in
the biochemical oxidation of organic matter, over a given time and at a given
temperature; it is determined entirely by the availability of the material as a biological
food and by the amount of oxygen used by the microorganisms during oxidation.
Blackwater — Wastes discharged from the human body either directly to a composting
toilet or through a water closet (flush toilet) and/or urinal and the water used for the
discharge.

BOD; - BOD determined by standard test (5 days at 20°C).

Design Irrigation Rate (DIR) — The loading rate secondary or advanced secondary
effluent can be applied to the soil of a disposal system expressed in mm/week
Effluent — Sewerage, water or other liquid partially or completely treated or in its
natural state flowing out of a septic tack, aerated wastewater treatment system, sand
filter or other treatment system or treatment component.

Expected available area — Areas, which at the time of evaluation have no physical
constraints to inhibit the design, instillation, operation and maintenance of disposal.
Greywater — The domestic wastes from a bath, shower, basin, laundry and kitchen
but excluding toilet and urinal wastes.

Intermittent watercourse — A natural or artificial stream or channel, identifiable by
recognisable bed and banks, along which rainwater or storm water usually or
occasionally flows.

Land application area — The area over which the treated effluent is evenly applied.
Land application facility/system —Is a facility for treatment, re-use or sustainable
disposal of effluent from a treatment plant on land under controlled conditions.
On-site sewerage treatment plant — Includes septic tanks, aerated wastewater
treatment plants, sand filters, wet composting toilets etc.

Permeability — (P - m/day) calculated value derived from the rate at which a head of
liquid is absorbed into a soil.

Primary treatment system - These systems treat domestic wastewaters to 120-240
mg/L BODs, 65-180 mg/L TSS standard or better prior to discharge to the land
application area.

Reserve Area — an area set aside for future use as a Land Application Facility to
replace or extend the original system.

Secondary treatment system - These systems treat domestic wastewater to 20 mg/L
BODs, 300 mg/L TSS standard or better prior to discharge to the land application area.
Sewerage - The wastewaters from the community, including all faecal matter, urine,
household and commercial wastewaters that contain human waste.

Surface Horizontal Setback Distances — Separation distances from watercourses,
dams, drainage channels, bores, wells, boundaries, paths, dwellings etc.

Total suspended solids (TSS) - The portion of total solids retained on a glass fibre
filter with a nominal pore size 2 microns, measured after being dried at a 103-105°C.
Vertical Setback Distances — Separation distances from permanent watertable or
bedrock.

Wastewater — The spent or used water from human or household or commercial and
institutional activity that contains dissolved or suspended matter (sewage).

 

Unearthed Geotechnical P/L. 12 Design Report 020-212

Page 14

\ ADVANCED
ENVIRO-SEPTIC dvanced Enviro-septic Design Calculator v8.8 ©
“Always The First Option”

Leader in Passive Solutions

 

 

 

 

 

 

      

 

 

Enter AES L/m loading rate, "30" for ADV Secondary or "38" Secondary >> This design is for an ADVANCED SECONDARY system
Is this a new installation YorN >> single vent size is 80mm or 2 x 50min house vents
Namber of person a septic tank outlet filter is NOT RECOMMENDED

 

Daily Design Flow Allowance Litre/Person/Day

 

 

 

 

 

 

 

 

‘Number of rows required to suit site constrants >>The maximum length of a single AES pipe run is 30 meters
Infiltration surface Soll Cat as est by site/soll evaluation. CATEGORY >> Catagory may require design considerations. Ref AS1547
Design Loading Rate based on site & soll evaluation DLR (mmv/day) >> Soll con may be necessary. Ref AS1547 & Ci
Bore log depth below system Basel area >>Min depth below basel area 600mm check water table/restrictive laye
AES FOOTPRINT MUST BE LEVEL WITH TRENCH EXTENSION >>Consideration reqd for Sloping sites. Ref AS1547. refer comment.
Is this design a gravity system with no outlet filter? Y or N : _]>> A House Vent & LOW VENT required on this system

 

PLEASE CHECK YOU HAVE FALL FROM TANK TO AES SYSTEM PIPES

 

 

COMMENTS :-* The outcome must be important to everyone. "
- Ripping of receiving surface required in clay soll structures in Cat 4,5,6. In addition refer fo AS 1547. Always excavate & rip paralld to the site slope/AES pipe.
- Specialist soils advice & special design techniques will be required for day dominated soll having dispersive or shrink/swell behaviour. Refer AS1547

- All Sloping sites special consideration and design of slope surface water and construction methods as per AS1547.
- Pambers are reminded that good construction techniques as per AS1547 are especilly important in these soll types. Refer AS1547 & AES installation Instructions

 

 

 

 

 

 

 

 

 

 

   
   
  
   
 
  
   

Total System load - litres / day (Q), 60 oud AES System |_E: Area
Min Length of AES pipe rows to treat loading 100 im HLth m : (L)
Number of FULL AES Pipe lengths per row 4 Iths ‘Width mW]
‘Sand 0.75 0.15
Total Capacity of AES System pipe in Litres 1696 It. | Denth « . .
Area m2 17.0 58.0
USE CUT LENGTHS OF PIPE IN THIS DESIGN? (ENTER yy | >>Slope percentage must be 0% & infiltration footprint must be level 1
IF YOU WISH TO USE A TRENCH EXTENSION DESIGN OPTION ENTER "Y" Enter Custom Width in metre |

 

 

 

 

 

 

 

 

A trench design has a max of 2 rows of AKS pipes located 300mm from up slope side and centered lenght wise in the trench is better.

   
  

   

 

 

 

AES-PIPE AES 3 mtr Lihs required 8 Iths Digitally signed by
Steve Dennis
AESC AESC Couplings required 6 a DN: cn=Steve
‘AESO AESO Offset adaptors 4 a Dennis,
AESODV AES Oxgen demand vent 1 ea o=Chandar
. smvaneentf nviromental,
AES-IPB AES 100mm Inspection point base 2 ca CPANEES sen i =Resign Review,
‘AES Equ AES Speed Flow Equaliser ea ail=designrevie
W@EnVirg==2a0,|
Double Offset Adaptors ee
AES DESC le a a,
TOTAL SYSTEM SAND REQUIRED (Guide Only) 2% a3 c=AU g
PLEASE email your AES CALC and Drawings to Date: 2020.09.07
08:41:34 +10'00'
DESIGNRE [email protected] [email protected] au

 

> The AES Calculator is a design aid to allow checking of the AES components and configuration and is a guide only, Site and soit
conditions referencing the AS 1547 standard are calculated and designed by a Quallified Designer.

> Chankar Envir has no ibility for the soit evaluatic ing calculations or DLR entered by the designer for this calculator.
> AES pipes can be cut to length on site. They are supplied in 3 meter Iths only.

 

AES-Design-V8.8-Calculator © Copy Right - Chankar Environmental pty Itd 14/3/2016

 

 

Page 15

 

 

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Page 16

 

 

 

AHD(Ol) ASSUMED HEIGHT DATUM (METRES)

ALL OVERLAND FLOW, STORMWATER AND DRAINAGE
<A" 1g To BE CONTROLLED VARIQUSLY AND DIRECTED
AROUND AND CLEAR OF LAND APPLICATION AREAS

© SOOOLT ALL-WASTE SEPTIC TANK (LOCATION TO BE DETERMINED/CONFIRMED ON-SITE)

co
2S AES TRENCH/BED (ISM LONG X 5M WIDE)
Esso 4 20m
—_———

a H2 BOREHOLE LOCATION AND UNGER 1:1000(@a4) XS

 

Owner/ClientAgent - ANTHONY MCDONOUGH 0407 493 611
LOT.4 RP905954 (#26) LITTLE SPRINGS LANE, LAKE MACDONALD. Noosa Council. 020-212.
Do not scale. Site Drainage - Poor. Vegetation - Grasses & Trees. Slope - 15-20% Vertical:Horizontal

 

 

 

 

\AJ TRELOAR (Copyright) Unearthed Geotechnical P/L. PO Box 1204 Gympie 4570 [email protected] 0417 132 300 210912020)

 

Page 17

 

 

 

WOS/9¥ G0 dO 3LVY Vv LV

vauv IWSva@ OL WoOSdA9/SLINOTOd aay
“ONIHINAYL/ONIdId SAW FHL JO AVT SHL
OL TaTIVaVd ‘YNOLNOD SHL 9NOTY
WHOOZ 4O HLdad V OL Gaddi¥ 3a OL SI
NOLLVAVOX3 SULLNI 3HL JO 3SVe HL

 

ANZA HOIH SHL Od SI YSHLO SHL ONY Sa OLNI S309 3NO

“NOILONNS WWOO] HLIM AMG WHOO| 40 HLONAT LYOHS V N3H |

“dN38 334930 06 V HLIM AMG WOO! JO Wi OLNI S344 dWNd WOYS did
aaSNdssIg ALIQOTAA,

“HARIS WNG/ V HOMOYNHL ONISSVd GNVS IVLOL SHL 40%Z NVHL
BYOW ON HLIM ‘ASYVOI AYSA OL JSHVOO Je OL SI GNVS GaHSVM NV319
“SLNAWSMINDAY GNVS WALSAS

 

INSPECTION PORT TO BE-INSTALLED ©

AT MOST DISTANT POINT FROM INLET

HHOSOS,

AMOd NOILIIdSN}

L

 

 

 

“ NOISNaLa: aaa’

 aNg HALSAS

 

 

y BROOS:

J / OFFSET ADAPTOR

i unooe
WHOS!
| unooe

RAISED CONNECTION

WHOOS.

 

 

=

/ :

ANVS W3LSAS.

did 211d38-O¥lANA

Bdld 211d3S-ONlAN]

‘anys Walsas

 

 

         

(iF GRAVITY)

HIGH VENT (IF PUMPED)

a INLET:

= VELOCITY DIFFUSER:
“INLET WITH HIGH VENT ON HOUSE

 

 

 

 

WHOOZI

WHO09ZI

WHOOZ!

 

Owner/ClientAgent - ANTHONY MCDONOUGH 0407 493611

 

LOT 4 RP905954 (#26) LITTLE SPRINGS LANE, LAKE MACDONALD. Noosa Council. 020-212.
Do not scale. Site Drainage - Poor. Vegetation - Grasses & Trees. Slope - 15-20% Vertical:Horizontal

 

2109/2020 y,

\AJ TRELOAR (Copyright) Unearthed Geotechnical P/L. PO Box 1204 Gympie 4570 [email protected] 0417 132 300

 

 

Page 18

 

 

INSPECTION PoRTS & X PERFORATIONS
(2 EACH SIDE AS PER AES REQUIREMENTS)

 
   
 

ENVIRO-SEPTIC PIPES

REPLACED ToPSoIL,

  

150MM
1S0me

300MM

300mm

 

 

AREA TO BE RIPPED TO A DEPTH OF 200MM
ENTIRE BASAL AREA To BE RIPPED TO A DEPTH OF 200MM {ALONG THE CONTOUR AND PARALLEL TO LAY OF PIPES)

(ALONG THE CONTOUR AND PARALLEL TO THE LAY OF PIPES) SECTION DETAIL

 

 

 

 

 

  

 

 

 

 

 

 

 

 

 

Mosquito
fe»

PROOF VENT A=
(some | REPLACED TOPSOIL/LOAM
ISOMM SOMMSIOOMM
300MM q

ENVIRO-SEPTIC PIPE
300HM
300mm SYSTEM SAND
VENT DETAIL
Top vIEW END view SIDE VIEW

 

 

ENVIRO-SEPTIC PIPE It rT ENVIRO-SEPTIC PIPE

A

 

 

 

 

 

 

+ OFFSET OFFSET
= ENVIRO-SEPTIC PIPE ADAPTOR ADAPTOR

OFFSET
ADAPTOR

 

 

 

RAISED CONNECTION DETAIL

 

 

 

 

Owner/ClienvAgent - ANTHONY MCDONOUGH 0407 493 611

 

LOT 4 RP905954 (#26) LITTLE SPRINGS LANE, LAKE MACDONALD. Noosa Council. 020-212.
Do not scale. Site Drainage - Poor. Vegetation - Grasses & Trees. Slope - 15-20% Vertical:Horizontal

 

 

\A J TRELOAR (Copyright) Unearthed Geotechnical P/L. PO Box 1204 Gympie 4570 [email protected] 0417 132 300 2/09/2020

 

/