wastewater design report

Page 2

1.00 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 2 SP241381 Sister Tree Creek Road, Kin Kin.

The results form the basis of our recommendations for the on-site treatment and
disposal of wastewater from the four proposed one bedroom cabins on this 21.5
hectare rural allotment.

A representative of Unearthed Geotechnical P/L was met and shown to the proposed
site by the owner, J Williams. Our site investigation fieldwork was performed on

31/01/2022 after some recent seasonal storm/rain activity in the course of the
preceding weeks.

1.1 Referenced Standards.

Queensland Plumbing and Wastewater Code

AS/NZS 1546:2012 On-site Domestic Wastewater Treatment Units
AS/NZS 1547:2012 On-site Domestic Wastewater Management

AS/NZS 3500 2:1996 Standard Sewerage Law Plumbing and Drainage Code
AS 1319:1994 Safety Signs for the Occupational Environment

AS 2698 .2:1990 Plastic Pipes Fittings for Irrigation Rural Applications

1.2 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.

1.3 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.

 

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2.0 SITE AND SOIL EVALUATION

The field and officework undertaken for our site and soil evaluation consisted of

i a desk 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

Be Boe Be Te Ge Ge Ge Be_ Go Ge

(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.

   
  

Registered y
Unearthed Gedt

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 cabins that
are to be serviced by this Land Application Facility, and to all contractors/suppliers/installers
for quotation and or construction objectives.

 

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3.0 DESIGN DETERMINATION

We have determined the soil to have the following characteristics

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Soil Characteristics (AS/NZS 1547-2012)

Borehole Nos 5&6

Depth (mm) = 700

Soil Category 5
Indicative Drainage Poor
Structure Strong
Texture Light Clay
Indicative Permeability P (m/day) as Ksa 0.12 - 0.5

For our calculations we have assessed the design flow as follows
Design calculations
Cabins 1 & 2 | Cabins 3 & 4

DLR (mm/day) (Advanced Enviro-septic™ effluent) 5-8 5-8
Hydraulic load (It/day/person) 120 120
Design flow Q (It/day) (equivalent population 4 people) 480 480
Total Trench/Bed Footprint (m’) 60 60
Septic Tank minimum size requirement (It) 3000 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 120It/person/day (all
wastes). With the installation of standard water reduction fixtures the design flow can be
reduced substantially.

In this instance we have used the DLR rate of 8 mm/day due to the very strongly structured
nature of the loamy Light Clay encountered.

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.

 

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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
Early-Middle Triassic, Kin Kin Beds, arenite, argillite or phyllite.

The proposed Land Application Areas are on an exposed 5-8% northern slope with
neighbouring vegetation consisting of grasses.

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 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.

 

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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

e allotment size, configuration and topographic idiosyncrasies,

e — separation distance requirements,

e areas previously used or required for construction or landscaping,

e poor permeability of sub soil profile.

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.

 

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5.0 DESIGN RECOMMENDATIONS

The four proposed cabins will utilize two identical wastewater facilities;
Cabins 1 & 2 will be serviced by one facility, and
Cabins 3 & 4 will be serviced by a second identical facility.

We recommend the installation of two Advanced Enviro-septic™ domestic
wastewater systems to treat the wastewater to advanced secondary quality.

We recommend the installation of two 3000It (min capacity) all-waste septic tanks to
treat the 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 tanks 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 pumps and pump wells to enable the Land Application
Area to be located above the septic tank. If the integrity and serviceability of the
existing septic tank is confirmed it may be retained. Alternatively it may be
decommissioned once the new septic tank is installed and commissioned.

We recommend further consultation to determine the adequacy of the final location
of the septic tanks and pump wells (if required) at the time of, or prior to construction
of the proposed dwelling.

Notwithstanding the final location of the septic tanks and the Land Application Areas
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

e have a discharge of at least 50% greater than the maximum 30-minute flow rate

e 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.

 

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The installed systems 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 systems 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.

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 plants 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.

 

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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 Areas
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 (say 0.5 kg/sqm) 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
Areas).

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 Areas. 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.

 

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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.

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

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

e positioned correctly in relation to boundaries, buildings etc to provide an angle of
repose of at least 45 degrees between the bottom of the footing system/excavation
and the base of any associated excavation

e watertight and capable of withstanding loads imposed on the roof and walls

e installed so that flotation will not occur when the tank/s is empty

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

e located with good clear access for servicing and desludging operations

e located within a designated area to enhance its amenity

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

e 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 Areas shall

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

e — 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

e be regularly inspected and maintained

e have the mandatory signage prominently displayed

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

 

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As the slope configuration was recorded to be linear planar the Land Application
Areas 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
mound/transpiration buffer zone (suggested minimum 1000mm wide and 150mm
high).

In this instance the drainage characteristics of the consistent soil profile, and the
topographical location of the proposed Land Application Areas (i.e. adjacent to, and
downslope of the well-formed pad) may be deemed to offer some, or sufficient
protection from surface water infiltration.

‘Similarly, the existing endemic vegetation, extending more than 30 m downslope of
the proposed Land Application Areas 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 Areas by proper final grade of the finished surface.

We recommend the base of the entire excavations 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
(say 0.5 kg/sqm).

During the excavation processes we recommend separation of the brown topsoil (to
be spread over the top of the entire installation to facilitate grass growth) from the
orange/red/brown 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.

 

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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 preferred 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 Areas). 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 Areas shall be allowed to revegetate with sufficient appropriate shallow
rooting grasses as determined by historical performance outcomes.

Unearthed Geotechnical P/L recommends further assessment regarding planting
requirements be sought prior to, or at the time of installation of the Land Application
Facilities. 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 areas, 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 Areas.

 

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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

 

 

 

 

 

 

 

 

 

Feature Primary Secondary a. Sm
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 4m downslope 2 m upslope boundary
Dwellings/play areas 15m 10m spray 10m spray
4m sub/cvrd | 4 m sub/cvrd
Swimming pool (water edge) 6m 6m 6m
Inground watertank 15m 6m 6m

 

 

 

Vertical Separation distance requirements

 

 

 

 

 

‘ ‘ Advanced
Depth of unsaturated soil to Primary | Secondary Secondary
Permanent watertable 1.2m 0.6m 0.3m
Bedrock/hardpan 1.2m 0.6m 0.3m

 

 

 

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;

 

 

 

 

 

 

 

 

Effluent Quality Primary | Secondary = dara
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

 

 

 

 

 

 

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6.0 DEFINITIONS

Advanced Secondary treatment system - These systems treat domestic wastewater to
10 mg/L BOD; 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.

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

Design Loading Rate (DLR) — 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).

 

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OPERATION AND MAINTENANCE GUIDELINES

General.

The purpose of these guidelines is to provide guidance to homeowners and operators
on maintaining a Land Application Facility in an unsewered area. The focus of these
guidelines is the facilitation of sustainable on-site disposal of treated effluent without
compromising public health or the quality of the environment.

The amount of wastewater to be treated is a major design factor in wastewater
treatment systems. Exceeding the design flow will contribute to failure. Water
conservation will reduce the volume of effluent requiring disposal to the Land
Application Area, which will increase its serviceable life and improve its efficiency.

Conservation measures include

e employing careful water use habits,

installation of water conservation fittings,

installing low-flush toilets where appropriate,

taking showers instead of baths,

installing small/efficient shower roses,

purchasing washing machines with economy water cycles,
having leaking taps repaired immediately,

only using the dishwasher when there is a full load,

only washing clothes when there is a full load, and

avoid overloading the system by spacing out water use as evenly as possible.

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-lt/person/day
(all wastes). With the installation of standard water reduction fixtures the design flow
can be reduced substantially.

Efficient on-site sewerage treatment relies on a balanced combination of physical,
biological (bacterial) and chemical processes. In order to keep the bacteria working
efficiently in the tank and in the land-application area:

e use biodegradable soaps and low-phosphorus detergents,

use biodegradable cleaning products with low phosphorus and nitrogen levels,
use low-sodium detergent in dispersive soil areas,

use detergents in recommended quantities,

do not use powerful bleaches, whiteners, soakers, spot removers and
disinfectants,

do not put chemicals, chlorine, water softeners or paint down the drain, and

do not put vegetables, meats, fats, oils coffee, citrus, cigarettes or medicines
down the drain.

 

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All wastewater treatment plants/systems work less efficiently when overloaded with
solid wastes. All reasonable and necessary actions and efforts to restrict the flow of
solid wastes, particularly from the kitchen, shall be encouraged and employed by all
present and future owners/ occupiers/users of this Land Application Facility.

A primary wastewater treatment tank (septic tank)

e will need to meet all design, standards and local government requirements,

e will need to be desludged regularly,

e may need a baffled/wiered distribution box set level on 0.9 x 0.9 x 0.1m concrete
to evenly distribute the effluent into the trenches/beds, if and as required by the
design.

Garbage grinders are not to be installed on an Advanced Enviro-septic System as their
use introduces additional solid matter, which must be broken down by the bacteria.
Their use also greatly increases the hydraulic load entering the system.

The choice of cleaning products will influence the environmental impact of
greywater and, equally, will influence the overall performance of treatment
within the septic tank. Only genuine biodegradable products and products with
low phosphorus should be used. Common washing powders contain sodium salts
as bulking agents which produces a saline greywater. Powdered products which
use potassium salts or liquid concentrates produce better quality greywater.
Some detergents and powder cleansers contain boron which not only can be toxic
to plants in high concentrations but can also be toxic to animals.

Operation.

This Land Application Facility shall be used only for effluent application and not used
for purposes that compromise the effectiveness of the system or access for future
maintenance purposes.

In order to reduce sludge build-up in the tank and pipework do not dispose of used
cooking oil grease/fats or food scraps or similar material down the sink.

Do not allow newspapers, disposable or sanitary napkins, rubber products, nappy
liners, cotton buds etc. to enter the system. The use of better quality toilet paper can
also help in improving operation of the system.

Do not allow excessive quantities of disinfectant liquids, bactericides, antiseptics,
strong caustics, acids, alkalis or chemical detergents to enter the wastewater system.
Their use can severely affect the bacterial, biological and chemical processes within
the system. Minimise their use and use more environmentally friendly products.

Where possible, the owners/householders/users should avoid shock loading of the
system, for example, by staggering the hours that the washing machine is used, and
the peak times in the bathroom. Washing machines should be used where possible
throughout the week instead of several loads within one day.

 

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Maintenance.

The plants and grasses used in conjunction with any Land Application Area should be
kept well pruned, mowed and raked to ensure that these plantings take up nutrients
with maximum efficiency. Grass cuttings should not be allowed to accumulate over
the Land Application Area.

Septic tanks reduce solids by bacterial deposition. Consequently, sludge settles at the
bottom of the tank and a scum or crust forms at the liquid surface. Periodic checks
are necessary (eg annually depending on the load entering the system), to ensure that
no carry-over of sludge (or crust) is entering the trenching (disposal system), thereby
inhibiting its usefulness. If the sludge depth in the bottom of the tank is 300mm or
less from the bottom of the outlet, then it is time to have the septic tank desludged (i.e.
emptied). It may well be a number of years before the sludge level rises to a level
(when scum and sludge occupy 2/3rds the volume of the tank or fist stage of a two-
stage system), which is detrimental. This is seldom less than three (3) years
(depending of course on the load entering the system). Under normal circumstances,
desludging of a septic tank should be performed every three to five (3-5) years. If
existing septic tanks are to be incorporated they shall be fitted with outlet filters, and
must also be pumped out before commissioning of the system. The grease interceptor
trap (if fitted) must also be cleaned out on a regular basis or as required — dependent
upon the load. All manufacturer maintenance/service requirements are to be met.

 

Unearthed Geotechnical P/L. 16 Design Report 022-003

Page 18

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 preferred 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 Areas). Shrubs should be kept well pruned for
better evaporative and transpiration processes.

Endemic vegetation must be retained and/or reinstated.

The Land Application Areas shall remain vegetated with sufficient appropriate
shallow rooting grasses, and the retention mound/transpiration buffer zone shall also
remain vegetated with sufficient appropriate shallow rooting grasses, shrubs or small
trees as determined by historical performance outcomes.

Unearthed Geotechnical P/L recommends further assessment regarding planting
requirements of the Land Application Areas throughout their serviceable life. 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 occasional application of /gypsum at a nominal rate (say 0.5
kg/sqm) to the Land Application Areas throughout their serviceable life. This will
assist with both plant growth and/or pH control. Further applications may be required
during the serviceable life of the Land Application Areas.

 

Unearthed Geotechnical P/L. 17 Design Report 022-003

Page 19

Greywater Characteristics.

The definition of greywater in the AS/NZS 1547:2012 Onsite Domestic-wastewater
Management is: “The domestic wastes from a bath, shower, basin, laundry and
kitchen but excluding toilet and urinal waste”.

The characteristics of greywater generated by a household will vary also according to
the dynamics of the household and is again influenced by the number of occupants,
the age distribution of the occupants, their lifestyle characteristics and water usage
patterns. Wastewater may have become contaminated in three ways

¢ by microorganisms, many of which may be pathogenic, i.e. cause disease;

e chemically by dissolved salts such as sodium, nitrogen, phosphates and chloride
or by organic chemicals such as oils, fats, milk, soap and detergents which may
provide food for micro-organisms and plant growth; and

e physically polluted by particles of dirt, food, lint and sand etc.

Greywater contains many impurities, including nutrients such as nitrogen and
phosphorus, which may harm the environment and the soil in particular. There are
some chemicals, which are not capable of being treated or degraded in the soil.
Therefore the soil ecosystem must be capable of adsorbing, absorbing, assimilating or
treating the chemical impurities and nutrients without medium and long-term
degradation of the soil of the environment. Domestic greywater treatment systems are
designed primarily to treat organic matter and are not normally designed to remove
chemical salts such as sodium, nitrates and phosphates that may be found in

greywater.

If a member of the house is ill or is carrying a subclinical infection, greywater may
carry infectious bacteria or viruses. However, in order for the greywater to make
another person ill it would be necessary for that person to drink or otherwise consume
the contaminated greywater inhale aerosols, touch or consume items, which have
come in contact with contaminated water. The objectives of the standards are to avoid
human contact with greywater. When greywater is being used follow these rules:

e don’t drink or play in greywater.

e don’t allow anything that may be eaten to come in contact with greywater.

e don’t allow greywater to pond on the surface or run off the property.

¢ don’t wash domestic pets in greywater or allow these pets to drink the greywater.

¢ wash your hands after contacting greywater or otherwise dealing with greywater.

Storage of Greywater.

All forms of wastewater when stored will turn septic unless the wastewater is treated
to a high standard. Similarly, when greywater is stored it will also turn septic giving
rise to offensive odours and provide conditions for microorganisms to multiply.
Significant levels of pathogens have been found in stored greywater after eight days.
Should the stored septic greywater be surface irrigated it will give rise to extremely
offensive odours, provide conditions conducive to disease transmission and attract
insect and rodent vectors. Greywater must not be stored, other than temporarily,
unless adequately treated.

 

Unearthed Geotechnical P/L. 18 Design Report 022-003

Page 20

Presence of Pathogenic Microorganisms.

Greywater may be contaminated with microorganisms such as bacteria, viruses and
protozoa. It is these microorganisms, many of which may cause disease, that present
the greatest health concern associated with greywater recycling and disposal. While
many bacteria cannot survive in a hostile environment like soil, some bacteria and
viruses that cause disease are resilient and can often survive for long periods of time
in this environment. Disease transmission is principally through the faecal-oral route
where the greywater may be directly ingested through contaminated hands or
indirectly ingested through contact with contaminated items such as grass, soil, toys,
garden implements and treatment plants while they are being serviced. Transmission
may also occur through inhalation of irrigated spray, by penetration through broken
skin, and by insect vectors such as flies and cockroaches. Contaminated drinking
water aquifers may facilitate ingestion of pathogens.

Comparison with Raw Sewage and Blackwater.

Raw sewage, blackwater and septic tank effluent are all forms of effluent that are
directly and grossly contaminated with human excrement and therefore represent a
public health threat. Sewage, blackwater and septic tank effluent are all managed by a
high level treatment before being released into the environment above ground level
and must at least be settled or filtered to remove solid particles before management by
sub-soil land application area. Raw sewage is usually directed, in metropolitan and
urban areas, to a centralised sewage treatment plant for treatment and utilisation or
disposal. Septic tank effluent is sewage that has been stored in a large vessel or tank
and has turned septic, i.e. all the oxygen in solution has been consumed by the
decaying process and the septic tank effluent becomes offensively smelly.

Laundry Greywater.

Microbiological: variable thermotolerant coliform loads, depending on dwelling
occupancy i.e. family with children. Wash water has poorer microbial quality than
rinse water.

Chemical: sodium, phosphate, boron, surfactants, ammonia and nitrogen from soap
powders and soiled clothes.

Physical: high in suspended solids, lint and turbidity.

Biological: high in biochemical oxygen demand,

Laundry wastewater represents about 23% of household wastewater (35% of
greywater). The detergents used in clothes washing give rise to the presence of
phosphorus, ammonia, organic nitrogen and boron in varying amounts depending on
the product and suspended solids such as lint, hair and dirt. Many of these
contaminants are classified as nutrients and if transferred to waterways or
groundwater may lead to environmental damage.

 

Unearthed Geotechnical P/L. 19 Design Report 022-003

Page 21

Bathroom Greywater.

Microbiological: variable levels of thermotolerant coliform, poorer microbial quality
than laundry rinse water.

Chemical: soap, shampoo, hair dyes, toothpaste and cleaning chemicals.

Physical: high in suspended solids, hair and turbidity.

Biological: \ower levels of concentrations of biochemical oxygen demand.

The bathroom (hand basin, shower and bath) generates about 38% of the household
wastewater flow (55% of greywater) and is considered to be the least contaminated
type of greywater. Wastewater from hand basins is more polluted than bath or shower
wastewater. Soap is the most common chemical contaminant found in bathroom
greywater and other common contaminants are hair shampoo, hair dyes, toothpastes
and cleaning chemicals. Biocidal soaps have little effect on reducing the bacterial
load in greywater.

Kitchen Greywater.

Microbiological: variable thermotolerant coliform loads.

Chemical: detergents, cleaning agents.

Physical: food particles, oils, fats, grease turbidity.

Biological: high in biochemical oxygen demand.

Kitchen wastewater is heavily polluted physically with food particles, oils, fats and
other highly polluting waste and is often more polluted than blackwater or raw
sewerage. It readily promotes and supports the growth of microorganisms. Because
of the solid food particles and because fats can solidify, kitchen wastewater may cause
blockages in land application systems unless fats are treated or removed from
greywater.

Swimming Pool and Spa Pool Backwash Water.

Swimming pool backwash water is highly concentrated in microorganisms, chemicals
(such as body oils and cosmetics) and particulates such as powder residue, hair, lint
and pool chemical residues. The amount of backwash water is difficult to estimate
and is variable depending on the size of the pool, filter type and usage patterns.

 

Unearthed Geotechnical P/L. 20 Design Report 022-003

Page 22

 

INFECTIOUS AGENTS PRESENT IN RAW DOMESTIC WASTEWATER

 

 

 

 

 

 

 

 

 

 

 

 

Organism Disease | Remarks
Bacteria
Escherichia coli Gastroenteritis Diarrhoea
(enteropathogenic)
Legionella pneumophila Legionellosis Acute respiratory illness
Leptospira (150 spp.) Leptospirosis Jaundice and fever
(Weil’s disease)
Salmonella typhi Typhoid fever High fever, diarrhoea and
ulceration of small intestine
Salmonella (~1700 spp.) Salmonellosis Food poisoning
Shigella (4 spp.) Shigellosis Bacillary dysentery
Vibrio cholerae Cholera Extremely heavy diarrhoea
and dehydration
Yersinia enterolitica Yersinosis Diarrhoea
Viruses

 

Adenovirus (31 types)

Respiratory disease

 

Enteroviruses (67 types eg.
Polio, echo and Coxsackie

Gastroenteritis, heart
anomalies and meningitis

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

viruses)
Hepatitis A Infectious hepatitis Jaundice and fever
Norwalk agent Gastroenteritis Vomiting
Reovirus Gastroenteritis
Rotavirus Gastroenteritis
Protozoa
Balantidium coli Balantidiasis Diarrhoea and dysentery
Cryptosporidium Cryptosporidiosis Diarrhoea
Entamoeba histolytica Amebiasis (amoebic Prolonged diarrhoea with
dysentery) bleeding and abscesses of the
liver and small intestine
Giardia Lamblia Giardiasis Mild to sever diarrhoea,
nausea and indigestion
Helminths
Ascaris lumbricoides Ascariasis Roundworm infestation
Enterobius vericularis Enterobiasis Pinworm
Fasciola hepatica Fascioliasis Sheep liver fluke
Hymenolepis nana Hymenolepiasis Dwarf tapeworm
Taenia saginata Taeniasis Beef tapeworm
Taenia solium Taeniasis Pork tapeworm
Trichuris trichiura Trichuriasis Whipworm
Source: Metcalf and Eddy, Inc., 1991.
Unearthed Geotechnical P/L. 21 Design Report 022-003

 

Page 23

Conclusion.

A failed Land Application Facility is both a serious public health risk and an
environmental hazard that can lead to

the spread of infectious diseases,

breeding mosquitoes and attraction of flies and rodents,
nuisance and unpleasantness,

pollution and infection of waterways,

contamination of bores, wells and groundwater,
alteration of the local ecology,

fish kills, and

legal action.

Problems can occur with systems that have not been adequately maintained. Some
early warning signs are very obvious

the disposal area is wet and/ or soggy with effluent ponding on the surface,
there is a smell of “sewerage” near the septic tank or absorption area,

the drains and toilets run slowly,

the grease trap is full or blocked,

mechanical failure, and

excessive running costs.

Home owner/occupiers/users are legally responsible to keep their on-site wastewater
treatment system in good working order. If any warning signs are evident the home
owner/occupier/user must contact the nearest local authority office without delay.

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 cabins that
are to be serviced by these Land Application Facilities.

 

Unearthed Geotechnical P/L. 22 Design Report 022-003

Page 24

 

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Page 25

ADVANCED
ENVIRO-SEPTIC Advanced Enviro-septic Design Calculator V8.8
“Always The First Option”

 

LPT OW ghey LLL

     

 

 

 

 

Sit
Adis 330 (LOT 2 S$P241381] SISTER TREE CREEK ROAD, KIN KIN CABINS | & 2 State QLD Post Code 4571
Client
Name Yee N de iS Date of Site Visit 31/02/2022
igners Ph i
Designers 4 | TRELOAR, UNEARTHED GEOTECHNICAL P/L Desianes, 0417 132 300 Number 9BCC740251
Name Number
Plumber Ph Plumb / Drainer
oe Number Lic Number
Council Designers AES
pram NOOSA Cert Number Date 2/2/2022

 

 

 

other site constraints addressed by the qu

 

ified desiga

 

sification, surface water, water tables an

    

‘This Calculator is a guide only, receiving soil

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Enter AES L/m loading rate, "30" for ADV Secondary or "38" Secondary 30 [>> This design is for an ADVANCED ‘ONDARY system

Is this a new installation Y or N y >> Minimun single vent size is 80mm or 2 x 50mm house vents

Number of person 4 a septic tank outlet filter is NOT RECOMMENDED
Daily Design Flow Allowance Litre/Person/Day 120
Number of rows required to suit site constrants 2 >>The maximum length of a single AES pipe run is 30 meters
Infiltration surface Soil Cat as est by site/soil evaluation. CATEGORY 5 >> Catagory may require design considerations. Ref AS 1547
Design Loading Rate based on site & soil DLR (mnvday) 8 >> Soil condi may be ry. Ref ASIS47 & C

Bore log depth below system Basel area 600__|>>Min depth below basel area 600mm check water table/restrictive laye

AES FOOTPRINT MUST BE LEVEL WITH TRENCH EXTENSION 1 >>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 ontcome must be important to everyone."
- Ripping of receiving surface required in clay soil structures in Cat 4,5,6. In addition refer to AS 1547. Always excavate & rip parallel to the site slope/AES pipe.
- Specialist soils advice & special design techniques will be required for clay dominated soil having dispersive or shrink/swell behaviour. Refer AS 1547

+ All Sloping sites require special consideration and management through design of slope percentage, surface water and construction methods as per AS1547.

- Plumbers are reminded that good construction techniques as per AS 1547 are especilly important in these soil types. Refer AS1547 & AES installation Instructions

 

 

 

 

 

 

 

 

   

 

 

 

 

Total System load - litres / day (Q). 480 Vd AES System Extension Area
Min Length of AES pipe rows to treat loading 8.0 Im ILth m: (L)
Number of FULL AES Pipe lengths per row 3 Iths Width m:(W)
Sane 0.75 0.15
Total Capacity of AES System pipe in Litres 1272 Ite. | Denth : ‘i .
Area m2 13.0 47.0
USE CUT LENGTHS OF PIPE IN THIS DESIGN? (ENTER. I | >>Slope percentage must be 0% & infiltration footprint must be level |
IF YOU WISH TO USE A TRENCH EXTENSION DESIGN OPTION ENTER "Y’ | Y Enter Custom Width in metre 4
AES INFILTRATION FOOT PRINT AREA. L=Q/(DLRxW) | Length Width Minimum AES foot print required .
The length & width of excavation required for this design is >> “a x ‘ = a m2 total

 

 

   

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

     

ace Gans GG Sis tie eee

  

 

 

    

AES-PIPE AES 3 mtr Lths required 6 ths: Digitally signed by
AESC AESC Couplings required 4 ca Steve Dennis
DN: cn=Steve
AESO AESO Offset adaptors 4 ca ,
" Dennis, o=Chankar|
AESODV AES Oxgen demand vent 1 a Enviromental,
AES IPB AES 100mm Inspection point base 2 ca G@ Agvanced,__..ou=Design
“ious Werewsrrsoition™ Review,
AES Equ AES Speed Flow Equaliser ca emfitesteye@envir
AES DESC Double Offset Adaptors ca o-septic.com.au,
c=US
TOTAL SYSTEM SAND REQUIRED (Guide Only) 20 m3
Date: 2022.02.03
PLEASE email your AES CALC and Dray 11:51:34 +10'00'
DESIG [email protected] Dotiguveclon iecarion nepal creme

 

 

> The AES Calculator is a design aid to allow checking of the AES components and configuration and is a guide only, Sire and soil
conditions referencing the AS 1547 standard are calculated and designed by a Quailified Designer
> Chankar Environmental has no responsibility for the soil evaluation, loading 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 26

ADVANCED
ENVIRO-SEPTIC’ Advanced Envyiro-septic Design Calculator V8.8 ©

“Always The First Option”

  

Leader in Passive Solutions

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

_
‘ieee LOT 2 $P241381 SISTER TREE CREEK ROAD, KIN KIN CABINS 3 & 4 State QLD Post Code 4571
Client
N: JODIE WILLIAMS Date of Site Visit 31/02/2022
jame
si Designers Ph =
DsSiBDES 4S TRELOAR, UNEARTHED GEOTECHNICAL P/L. oe 0417 132 300 Number QBCC740251
Name Number
Plumber Ph Plumb / Drainer
Plumber Number Lic Number
Council Designers AES
NOOSA Cert Number Date 2/2/2022
This Calculator is a guide only, receiving soil classification, surface water, water tables and all other site constraints addressed by the qualified designer.
Enter AES L/m loading rate, "30" for ADV Secondary or "38" Secondary 30 [>> This design is for an ADVANCED SECONDARY system
Is this a new installation Y or N ¥ >> Minimun single vent size is 80mm or 2 x 50mm house vents
Number of person 4 a septic tank outlet filter is NOT RECOMMENDED
Daily Design Flow Allowance Litre/Person/Day 120
Number of rows required to suit site constrants z >>The maximum length of a single AES pipe run is 30 meters
Infiltration surface Soil Cat as est by site/soil evaluation. CATEGORY § >> Catagory may require design considerations. Ref AS 1547
Design Loading Rate based on site & soil evaluation DLR (mm/day) 8 >> Soil conditioning may be necessary. Ref AS1547 & Comments.
Bore log depth below system Basel area 600 |>>Min depth below basel area 600mm check water table/restrictive laye
AES FOOTPRINT MUST BE LEVEL WITH TRENCH EXTENSION 7 |>>Consideration reqd for Sloping sites. Ref AS 1547. refer comment.
Is this design a gravity system with no outlet filter? Y or N Y >> 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 soil structures in Cat 4,5,6. In addition refer to AS 1547. Always excavate & rip parallel to the site slope/AES pipe.
+ Specialist soils advice & special design techniques will be required for clay dominated soil having dispersive or shrink/swell behaviour. Refer AS1547

~ All Sloping sites require special consideration and management through design of slope percentage, surface water and construction methods as per AS1547.

- Plumbers are reminded that good construction techniques as per AS1547 are especilly Important in these soil types. Refer AS 1547 & AES installation Instructions

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Total System load - litres / day (Q). 480 Vd AES System Extension Area
Min Length of AES pipe rows to treat loading 8.0 Im Lith m : (L)
Number of FULL AES Pipe lengths per row 3 Iths Width m:(W,
~~ 0.75 0.15
Total Capacity of AES System pipe in Litres 1272 ltr. z . “
Area m2 13.0 47.0
USE CUT LENGTHS OF PIPE IN THIS DESIGN? (ENTER yf | >>Slope percentage must be 0% & infiltration footprint must be level |
IF YOU WISH TO USE A TRENCH EXTENSION DESIGN OPTION ENTER | Y Enter Custom Width in metre 4
AES INFILTRATION FOOT PRINT AREA- L=Q/(DLRxW) | Length Width Minimum AES foot print required .
The length & width of excavation required for this design is >> 15.0 x 4 = 60.0 ‘m2 total

 

 

 

 

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

 

AES-PIPE AES 3 mtr Lths required 6 Iths
ee eed sed 4 Digitally signed by
‘ouplings ca ;
eninge was Steve Dennis
AESO AESO Offset adaptors 4 ca DN: cn=Steve
AESODV AES Oxgen demand vent 1 ca Dennis, o=Chankar

Enviromental,
AES-IPB AES 100mm Inspection point base 2 ea IG BNViNG-SePTIC” ou=Design Review,

"Ratu Wastewater Saltions™

 

AES Equ AES Speed Flow Equaliser ca email=steve@envir
o-septic.com.au,
AES DESC Double Offset Adaptors ea
c=US
TOTAL SYSTEM SAND REQUIRED (Guide Only) 20 m3 Date: 2022.02.03

 

 

PLE 11:51:51 +10'00'

   

Femail your AES CALC and Drawings (o

 

 

[email protected] [email protected]

 

> The AES Calculator is a design aid 10 allow checking of the AES components and configuration and is a guide only, Site and soit
conditions referencing the AS 1547 standard are calculated und designed by « Quailified Designer

> Chankar Environmental has no responsibitity for the soit evaluation, loading calculations or DLR emered by the designer for this cateulaior

 

pipes can be cut to length on site. They are supplied in 3 meter lths only

 

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

 

 

Page 27

 

    
   
   

KIN KIN CREEK

EXISTING/PROPOSED
DEVELOPMENT SITE

100 0 100 200 300 m <| b
; A

SCALE | : 5000 \\synology\General\JOBS\022-003-SisterTreeCreek\022-003-Drawings.dwg|

 

CLIENT: JODIE WILLIAMS (0488 569 020) 51/01/2022 Uneanian GEOTECHMEAL AND SHALL NET BE COPED

 

 

Lot 2 SP241381 SISTER TREE CREEK RD, OniG. SHEET SWE Al

 

KIN KIN. NOOSA COUNCIL SCALE: 1-5000

 

 

UNEARTHED GEOTECHNICAL P/L 022-003
A.J. TRELOAR QBCC Lic. No.740251 PO Box 1204, GYMPIE, QLD 4570 _O4I7 152 500 [email protected]] PLAN NO. -

 

 

 

 

Page 28

 

|
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att BH 5 24
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EXISTING SEPTIC 3
® tank

PROPOSED
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INTERNAL PROPERTY FENCING

   

 

 

 

 

 
 
 

EXISTING SHEDS

  
  

PROPOSED

EXISTING SEPTIC TANK

SOOOLT SEPTIC TANKS (LOCATIONS TO BE DETERMINED ON-SITE)

t | EXPECTED LAND APPLICATION DESIGN AREAS (CABINS | & 2, CABINS 5 & 4)

SQ PTETEIIEETED® EXCAVATED SURFACE WATER DIVERSION DRAIN (SUGGESTED MIN. 500MM WIDE, 50MM DEEP)

 

 

 

 

 

 

 

 

 

 

20 0 0 20 40 60™
SCALE | : 1000 .

\\synology\General\JOBS\022-003-SisterTreeCreek\022-003-Drawings.dwg

CLIENT: JODIE WILLIAMS (0488 569 020) 51/01/2022 thea ene sae cn
LoT 2 SP241581 SISTER TREE CREEK RD, See Srecy Sue Ab

AN KIN. Noosa cou SCALE. 11000
NEARTHED GEOTECHNICAL
PO Box 1204, GYMPIE, GLD 4570 _O4I7 132 $00 [email protected]| PLAN No. 022-003

A.J. TRELOAR QBCC Lic. No.740251

 

Page 29

 

AES PIPES SYSTEM SAND

OFFSET ADAPTOR COUPLINGS RAISED CONNECTION

| |

 

 

 

 

 

 

 

 

 

 

VELOCITY DIFFUSER, INLET & HIGH VENT IF PUMPED
INLET WITH HIGH VENT ON HOUSE IF GRAVITY FED

 

 

 

 

 

Low VENT bf] I uo By ISSO
2650MM
SAND BED EXTENSION
INSPECTION PORTS; ——_______y,
2700MM 9600MM 2700MM

100MM LOW VENT INSTALL WITH A MOSQUITO PROOF STAINLESS STEEL MESH. FIXED TO BOLLARD

Le

 

ELBOW LEVEL WITH TOP OF OFFSET ADAPTER
150MM

 

 

 

REPLACED TOPSOIL 150mm 50-100MM

LEVEL, 3

I = SLOPE
HHH q
| — OFFSET ADAPTER

 

 

 

 

 

AES |
io
VENT DETAIL [_svsren saw |

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

\\synology\General\JOBS\022-003-SisterTreeCreek\022-003-Drawings.dwg}

 

 

 

 

 

 

 

 

CLIENT: JoDIE WILLIAMS (0488 569 020) 31/01/2022 | Sems'sareaa set we core
LoT 2 SP24138| SISTER TREE CREEK RD, aaa, SucET See AE
KIN KIN. | NOOSA COUNCIL SCALE: NTS
UNEARTHED GEOTECHNICAL P/L PLAN No. 022-003

 

A.J. TRELOAR QBCC Lic. No.74025!_ PO Box 1204, GYMPIE, QLD 4570 0417 132 300 [email protected]

 

Page 30

 

 

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\\synology\General\JOBS\022-003-SisterTreeCreek\022-003-Drawings.dwg

UNEARTHED GEOTECHNICAL AND SHALL NOT BE COPIED

(OR REPRODUCED WITHOUT THE APPROVAL OF
UNEARTHED GEOTECHNICAL

ORIG. SHEET SIZE: A&

SCALE: NTS

COPYRIGHT: THESE PLANS ARE THE PROPERTY OF

 

 

 

PLAN No. 022-003

 

31/01/2022

CLIENT: JODIE WILLIAMS (0488 569 020)

 

 

LoT 2 SP24138| SISTER TREE CREEK RD,

NoosA COUNCIL

UNEARTHED GEOTECHNICAL P/L

A.J. TRELOAR QBCC Lic. No.740251

KIN KIN.

 

PO Box 1204, GYMPIE, QLD 4570 0417 152 300 _UNEARTHED@TPG. COM. AU

 

 

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\\synology\General\WJOBS\022-003-SisterTreeCreek\022-003-Drawings.dwg
CLIENT: JobIE WILLIAMS (0488 569 020) 31/01/2022 Uneartheo Geovechmeat a1 SHA MET 8 COPED
LoT 2 SP24138I SISTER TREE CREEK Rp,
ORIG. SHEET SIZE: A&
KIN KIN. _ NOOSA COUNCIL SCALE. NTS
UNEARTHED GEOTECHNICAL P/L 022-003
A.J. TRELOAR QBCC Lic. No.74025! PO Box 1204, GYMPIE, QLD 4570 O4I7 132 300 [email protected]| PLAN NO. -