Attachment F - Effluent disposal report

Page 2

ON-SITE EFFLUENT DISPOSAL REPORT: Lot 1 & 2/305 Lake McDonald Drive,
Cooroy.

Introduction:

Australian Soil Investigations have been asked to perform a site evaluation of the above property to
establish a solution for the safe treatment and disposal of effluent on site.

For this we have conducted a Site and Soil Assessment for the purpose of determining the most suitable
means of on-site effluent disposal. On-site testing for this assessment was performed in accordance with
AS 1547-2000-"On-Site Domestic Wastewater Management and the Queensland Plumbing and
Wastewater Code. The field work for this assessment was undertaken, on the 14/5/2015.

The assessment has been based upon the proposed and existing plans provided by the client. Current
operations on-site include a packing facility for the produce together with site management and
maintenance operatives. Currently this sees a total of 25 persons employed on the site. This number is
expected to increase to 70 persons as production increases.

Design parameters will be based on these hydraulic demand requirements.
Site description:

The site is a rural property with a number of large capacity commercial greenhouse structures used for
primary food production (ie. Vine Tomato growing)

The allotment is located within the Noosa Shire Council.
Two creeks run along the eastern and western boundaries of the site. Approximately two thirds of the
site lies below the Quoo flood line. For this reason only a small area of land in the south east corner of the

site adjacent the existing driveway off Lake McDonald Drive is suited for the disposal of treated effluent.
The area is above the Quoo line and has a gentle slope in the order of 5%.

On-Site Assessment:
During our site evaluation consideration was given to the following:

Y the available area for the primary siting of absorption areas (Land Application Area) and
alternative sitings.

¥ the risk of prejudicing adjoining property and underground water supplies, by seepage or run off
from the site.

Y permeability, soil type and soil depth.

Y drainage, and envisaged seasonal changes in ground water level.

¥ general climate.

v slope and the effects of seepage and water run-off from surrounding higher ground.
On-Site Testing:

Three test holes were excavated in the positions shown in the attached site sketch. These holes were
100mm diameter x 600 mm deep for the purpose of site soil assessment in accordance with the AS 1547

AUSTRALIAN SOIL INVESTIGATIONS 2 ASI Ref: 150105(A)

Page 3

- 2000. A further 100mm diameter hole was excavated to determine the soil profile. The site was then
Classified in accordance with AS 1547 — 2000 On-Site Wastewater Management for the purposes of
effluent disposal.

Results:

Site Observations
Ves No

Suitable Area for siting a Land Application Area

Adequate area for a Reserve area

Is there Adequate Soil Depth depth above rock or the water table

Is the Soil Type Satisfactory

io ee ae oe

Is the potential of runoff from the proposed area OK

Is there a potential for groundwater seepage V

Soil Borehole Results

Depth Soié Description

0-400 Silty Sand SM
Fine to coarse grained, dark grey
Moist, massive.

400-1200 Silty Clay CH
Med to heavy clay , orange brown
Moist, mod. (Cat 5)

1200-2000 Sandy Clay CH
Med to heavy clay, pale brown
Moist, mod (Cat 5-6)

2000 Borehole Terminated

Constant Head Method permeability results

The following design criteria is applicable for the following disposal methods:

Test Site:

3 4 5
Faee (mm) 75) 25 25
Time (mins) 107 375 300
(secs) 14 0 0
Indicative Permeability (Ksat) 0.0373 0.0107 0.0133
Soié Category 6 6 6

AUSTRALIAN SOIL INVESTIGATIONS 3 ASI Ref: 150105(A)

Page 4

 

Indicative Permeability

 

 

 

 

 

 

 

__ Test Site: a a ; eo. Os eo
Soil Category | 6 | 6
Structure ___ Moderate Moderate | Moderate __
Indicative Permeability <0.06 <0.06 | <0.06
DIR 15 al) id
Recommendations:

Based upon our Site and Soil Assessments we recommend the following method of On-Site Effluent
Treatment and Disposal should be implemented.

For the treatment of the Effluent we recommend;

Advanced Secondary WasteWater Treatment System (AWTS)

(NOTE: The system chosen must satisfy both the Queensland Plumbing and Wastewater Code and
AS1547-2000 On-Site Domestic Waste Water Code and be approved for use by the Local Shire/Council
governing the allotment.)

The system should be fitted with a pump of adequate capacity to pump up to the nominated Effluent
Disposal Area. A pump well and pump should be provided at the disposal area to receive the effluent
from the system and equally dose the area.

Current domestic rated AWTS systems are rated to treat upwards of 9800 Lt/week. A number of systems
may be required to treat the expected effluent volumes produced.

For the disposal of the treated effluent within the Land Application Area we recommend;

A Pressuriged Surface Reticuéated Jrrigation Systom

(NOTE: Where Surface irrigation is used in conjunction with an Aerobic Sand Filtration System the treated
effluent shall be disinfected with chlorine prior to dosing of the Land Application Area.)

We have considered both current and forecasted hydraulic loadings for the system.

The size of the Land Application Area for 25 persons is calculated as follows;

AUSTRALIAN SOIL INVESTIGATIONS ASI Ref: 150105(A)

Page 5

Minimum requirement — q 30 litres per person per day AS 1547-2000 Appendix 4.2D

Water Supply Tank water
Number of persons = 25 AS 1547 Table 4.33
Total Volume Q= 5250 mim/week
Soil Category 6 AS 1547 Table 4.244
Indicative permeability 0.06 AS 1547 Table 4.244
DIR 15 mm/day AS 1547 Table 4.204
Disposal Area A= 350 m

The size of the Land Application Area for 70 Persons is calculated as follows;

Minimum requirement — q 30 litres per person per day AS 1547 ~2000 Appendix 4.2D
Water Supply Tank water

Number of persons = 70 AS 1547 Table 4.303
Total Volume Q= 14700 ~—s mm/week
Soil Category 6 AS 1547 Table 4.2A4

Indicative permeability 0.06 AS 1547 Table 4.244

DIR 15 mim/day AS 1547 Table 4.2A4

Disposal Area A= 980m?

WE RECOMMEND THAT A MINIMUM LAND APPLICATION AREA OF 350m? BE PROVIDED FOR 25
PERSONS.

WE RECOMMEND THAT A MINIMUM LAND APPLICATION AREA OF 980m? BE PROVIDED FOR 70
PERSONS.

A check of Water Balance requirements in accordance with the Code has been undertaken
and have been found to comply

The Irrigation System should be designed in accordance with AS 1547 ~ 2000 and comply with all
relevant statutory requirements

AUSTRALIAN SOIL INVESTIGATIONS ASI Ref: 150105(A)

Page 6

WE WOULD RECOMMEND THAT A SECOND 10 PERSON DOMESTIC AWTS SYSTEM BE
INSTALLED WHEN THE ON-SITE EMPLOYEE NUMBER EXCEEDS 50.

Construction Guidelines for Land Application Area:

Surface Irrigation

Consists of a reticulated pressurised irrigation system that uses a series of surface sprinklers to equally
distribute the treated effluent across the Land Application Area. This system allows vegetation within the
area to directly benefit from such watering which also assists in disposal of the effluent via evapo-
transpiration. Points to consider in the construction of the area include the following:

> To avoid runoff from the area it should be as level as possible. Any sloping areas should be
terraced or retained and filled

» rainwater shall be diverted around the perimeter of the area by use of open catch drains or
bunding. Similarly a retention bund should be constructed around the low side of the area to
retain any effluent overflow.

> Sprinklers with a throw of not more than one meter shall be used and praduce coarse
droplets (instead of a fine mist) to minimise the risk of aerosol dispersion and wind drift of
effluent. The plume height shall not be more than 300 mm above the finished surface of the
irrigation area.

> The treated effluent must not be used for the irrigation of fruit or vegetables

» Siting of surface irrigation shall be in a location away from regular pedestrian traffic and
recreational areas, so there is no risk of direct spray or wind driven spray onto such areas.

> The area should not be within vehicle paths or be near children’s play areas
» Treated effluent quality must conform to AS 1547-2000 and the Queensland Plumbing and
Wastewater Code.

We have attached a site plan showing the proposed position of the Land Application Area and also some
details highlighting the construction techniques required for surface irrigation.

Preparation of irrigation area:

When a proposed irrigation area has a low permeability, it is particularly important to ensure that the
permeability of the soil in the irrigation area is improved and maintained and that there is an adequate
cover of porous and fertile topsoil to act as immediate storage of effluent applied to it, and to support
rapid growth of vegetation on the area to maximise evapo-transpiration.

It is recommended that topsoil be imported to improve rapid growth of vegetation and improve the
evapo-transpiration process.

Requirements of irrigation system:

Note: A Pump well with suitable pump to operate an Indexing valve will be required at the
Irrigation area in order to ensure equal dosing of disposal area. This pump well is to receive
the pumped effluent from the AWTS.

All irrigation pipe work and fittings shall comply with all parts of AS 1477 or AS 2698.2. The distribution
irrigation lines should be buried to a minimum depth of 100mm. There shall be no cross connection

AUSTRALIAN SOIL INVESTIGATIONS ASI Ref: 150105(A)

Page 7

between any irrigation pipe work and the potable water supply. Any pipe work used for the transport of
effluent included treated effluent must be lilac in colour

Along the boundary of the surface irrigation area there shall be at least two warning signs clearly visible
to inform the occupants of the premises that recycled water is used for irrigation. Each sign shall comply
with AS 1319 and have:

(a) lettering visible at 3m and
(b) wording: Recycled Water

Avoid Contact

DO NOT DRINK
Prior to the use of the system, the warning signs and the landscaping and surface Preparation must be
completed. The Land Application Area must also be inspected and approved for use by Allgo Waste
Management

Siting of the Land Application Area:

The current Code of Practice for On-site Sewerage Facilities provides minimum horizontal/vertical
separation distances for Land Application Areas. They are as follows;

Surface Land Application Areas (ADVANCED SECONDARY)

Property Boundaries Upslope from the Area - 2.0m

Property Boundaries Downslope from the Area - 4.0m
Dwellings or buildings - 15.0m
In ground swimming Pools # 6.0m
In-ground potable Water Tanks - 15.0m
Dams, Watercourses or Bores - 10.0m
Vertical distance to water table - 0.6m

A nutrient buffer zone is to be established within the land application area and downslope of
the area.

In no instance shall Effluent be used for irrigation of fruit or vegetables.

No Vehicle loading or children’s recreational areas to be applied or constructed within the
Land Application Area,

System Maintenance:

The owner of the property shall ensure that all manufacturers maintenance procedures are undertaken in
accordance with the local authority and the manufacturers recommendations for what ever system is
installed. The system must be inspected/tested on a regular basis in accordance with the manufacturers
requirements and all Statutory requirements from relevant local and state government agencies.

System Installation:

Installation of the system must be undertaken by a qualified plumber in accordance with local authority
requirements and in accordance with the relevant Australian Standards and Australian Building Code.

Definitions:

Design Loading Rate (DLR)

The long term acceptance rate (LTAR), reduced by a factor of safety, expressed in L/m?/day or mm/day
as applied to the horizontal design area of a land application system.

Design Irrigation Rate (DIR)

AUSTRALIAN SOIL INVESTIGATIONS ASI Ref: 150105(A)

Page 8

The loading rate that applies to the irrigation of a land application area with effluent of a secondary
quality. It is expressed in L/m2/day or mm/week. If a spray irrigation system is used, the secondary
effluent is subject to continuous disinfection.

Durable Aggregate

An aggregate with the grading requirements specified in AS 2758.1 for single-size course aggregate for
nominal sizes from 20mm - 40mm.

Dry Vault

Commonly known as “composting toilets”, a chamber that receives and treats human and domestic
organic waste using a biological degradation or dehydrating process. The only water used is for cleaning
or assisting the biological degradation process.

Geotextile

Any permeable durable synthetic textile material used with foundations, soil, rock, earth or other
geotechnical engineering related material.

Land Application Area

The designated area of land and reticulation system used for the disposal of the treated effluent.

LTAR

The long term average rate an effluent can be adsorbed into the soil of a disposal system, expressed in
litres per square meter per day. LTAR is dependant on effluent quality, permeability and organic loading.
Permeability

The rate clean water is transmitted through a soil, expressed in meters per day.

Terrace

Where the trenches are in an area where the slope exceeds 15% (approximately 1 in 7) they must be
terraced.

Water Reduction Fixtures

Fixtures include 11/5.5 litre water closets, shower flow restrictors, aerator taps and water conserving
washing machines.

Nutrient Buffer Zone
An area planted with suitable plants required to take up any excess nutrients produced within the area.
Plant selection should include native and indigenous species. This would include grasses shrubs and trees.

Report Limitations:

The log sections in this report should be representative of the soil conditions over this site, however, soil
conditions can change dramatically over short distances. The person responsible for installing the system
must observe the soil profile and ensure it matches the soil profiles recorded in this report. If soil
conditions differ from those recorded by us, we must be immediately notified so that further investigation
can be carried out and the system design modified if necessary. This work may involve additional fees
and costs. This company will not accept any responsibility for additional costs to any party as a result of
soil variations.

In writing this report, we have also considered all the information supplied to us by our client. Should the
client or his agent have omitted to supply us with relevant information, our report may be irrelevant
and/or inappropriate. We do not take responsibility for the consequences in such cases and we will make
an additional charge if as a result, more testing or rewriting of this report is necessary.

AUSTRALIAN SOIL INVESTIGATIONS ASI Ref: 150105(A)

Page 9

The operation of the disposal system is dependant upon the hydraulic load, the type of the material
entering the system and the maintenance of the system. As these factors are beyond the control of this

company do not take any responsibility for the long term adequacy of any disposal system
construct n this site or the consequences of its malfunction.

   

Sean Richardson - RPEQ
For and on behalf of:
AUSTRALIAN SOIL INVESTIGATIONS.

AUSTRALIAN SOIL INVESTIGATIONS 9 ASI Ref: 150105(A)

Page 10

 

 

Approved 10 EP Person
Aerated Waste Water
Treatment System.

Supply from pump

set, sized for

24L/min (min.) to

disposal area. =\

Non-Return valve
where AWTS below

Surface runoff diversion
drain or bund.

Revision | Description Date

 

15/10/08 Surface

 

 

 

 

 

 

 

Where the ground slope exceeds 15%
the area must be terraced into 3.0m
wide platforms containing a minimum
of 1/25mm laterals each. Provide
2.0m seperation between platforms.

 

 

 

 

aplication area.
32mmDelivery line

Indexing(K—-Rain valve)

No. of ports to siut size
and no. of laterals.Ensure
K-Raine is at highest point.

Distribution pipe pipe sized
to ensure equal flow to
sprinklers, (25¢ min.).

 

 

|
Extent of land
application area
(hatched), size as
indicated on plan.

 

 

YW

 

_—————————

Legend
Large drop sprinklers, 300
high maximum plume height,
4(No.) sprinklers per 100m2
of irrigation orea.(Eg.Wobblers)
3000 Min.

 

Zl

 

Surface runoff Se

retention bund.

Large drop
sprinklers, refer

above for spec’n. Mulch or Topsoil,

200mm deep Min.

Diversion
Drain.
Ground Level
TERN WS

1000

Ba

Retension

J Bund.

 

 

i

 

 

 

 

 

 

 

 

 

YYZ
OULD LEGILLO SOG GS.
CLAY SITES :Apply Gypsum at — LELLLE: oe LEGA 8 i¢

1kg/sqm and rip the soil to a £

depth of 200mm.

OTHER : Scarify to a depth of mecetec leds

200mm.

a Upon completion the disposal area shall be planted
with approved vegetation, refer attached listing.
Drg No. ABS-—O01

1. The Plumber is responsible for locating all existing services within ond AUSTR ALI AN
adjacent the allotment prior to commencing the work.
2. This drawing is to be read in conjunction with the attached details and the SOIL INVESTIGATIONS

specifications and requirements of Australian Soil Investgations Absorption
Report.

3. The installation is to be in strict accordance with AS 1547-2000, Local
Authority requirements ond Australian Soil investgations Absorption Report.
4. The work is to be undertaken ond completed by a registered plumber.

JABNIT 147 854 439

1/11 PROJECT AVE NOOSAVILLE QLD.4569
Ph 04280 310 453 Fax (07) 54472 634

 

STD DETAIL Drg No. ABS-009Rev-A

 

 

 

 

Page 11

 

 

 

Lot number 1 & 2
RP No. SP108094
Local Authority : NOOSA COUNCIL

 

 

 

 

 

 

County of
Area - 33.4ha
Surface
Drainage Good.
i Grasses &
Megeignon Scattered Trees
BH2 .
@ Borehole location.

J-7% Slope
measured as a percentage gradient from
high ground to low ground.

DO NOT DIMENSION OFF THIS DIAGRAM.

   
    
     

Existing Creek

Existing Green
Houses.

Existing 15mx30m_ packing
shed

Location of Advanced Secondary
Effluent Treatment System Refer
Org 150105-ABS.1 for details.

 

Proposed Land application Area.
Surface Irrigation,
Refer Drg 150105-ABS.1 for

Existing Staff Parking Area details.

Drg No. ABS-001

Revision | Description Date

 

 

 

 

 

 

 

 
 

Existing Driveway

   
  

General Notes :

1. Do not scale from this drawing.

2. The final position of the disposal area is to be determined on-site in
accordance with the noted minimum offsets, minimum pipe grades and
site constraints.

3. The Plumber is responsible for locating all existing services within and
adjacent the allotment prior to commencing the work.

4. This drawing is to be read in conjunction with the attached details
and the specifications and requirements of Australian Soil Investigations
Absorption Report. No.150105(A). Do not commence construction without
first referring to this report.

5. The installation is to be in strict accordance with AS 1547-2000,
Local Authority requirements and Australian Soil Investigations Absorption
Report. No.150105(A).

6. The work is to be undertaken and completed by a registered plumber.
7. Mater reduction fixtures are to be used where nominated in the
Effluent Summary below, refer report No. 150105(A) for details.

 

ABN11 147 854 439

AUSTRALIAN
SOIL INVESTIGATIONS

1/11 PROJECT AVE NOOSAVILLE
Ph 0428 310 453 Fax (07) 5447 1904

Scale 1:5000

 
  
   

Title: SITE PLAN - On-Site Effluent Disposal

 

Project 305 Lake McDonald Dr

Cooroy

 

Date: May 2015

 

Ne

Drg No. 150105-AB

 

 

 

 

Page 12

 

Revision | Description Date

 

 

 

 

 

 

 

 

 
 
 

Lot number 2

ES Porth of heteaa EFFLUENT SUMMARY — 25 Persons

 

 

  

 

 
 
     

 

   

/ Location of 10 Person Advanced Secondary County of March Application system Advanced Secondary Treatment System
/ | Treatment Plants (Units). Area - 4.956h
Up to 50 Persons ~ 1 Unit eg Se are Disposal system Surface Irrigation
| p to 70 Persons - 2 Units :
\ - \ (Ensure pump of sufficient size to pump to Area Required 350 Sq.m

 

  
 

isposol area. = ;
Leet epee te) Soil improvement required — |No

 

Water Reduction Fixtures Yes

 

 

 

 

 

 

 

 

 

   
   
 
 

 

 

 

  

 

  
  

\ | Water Supply On-site Storage Tanks
|
\ | i ion 25 People
e | | 10m MIN. Setback from all seasonal Maximum Populatio P
me 30 di and existing watercouses and dams This summary details the parameters for which this system has been designed for. Any variation to the
} ., Rising Nai to to Land Application Areas. parameters may require a redesign of the system to reduce the risk of falure.
J/ ’
\ , ee a EFFLUENT SUMMARY — 70 Persons
3 | ey \ Hn e Lond Application Area to be located
|

Lond [application Area above 0100 Flood Level Application system Advanced Secondary Treatment System

 

 

  

 

Disposal system Surface Irrigation
Nutient Buffer Zone to be planted

 

 
 

in and around Land Application Area. Area Required 980 Sq.m

 

 

 

Soil improvement required | No

 

 

Water Reduction Fixtures Yes

 

 

PROPOSED LAND APPLICATION AREA, 7
Surface krigation to be used, Water Supply On-site Storage Tanks

 

 

 
 

 

 

 

 

  
  
 
 
 
 
 
  
   
   
     

 

fina! size and location to be determined on site. Maximum Population 70 People
a ication A
25 Persons ~ 350m? _{Current) This summary details the parameters for which this system has been designed for. Any variation to the
70 Persons - 980m*(Future) parameters may require a redesign of the system to reduce the risk of failure.
Land Application Area adjusted accordingly to suit
number of persons daily usage
Surface
Drainage Good.

Provide a surface mound or bund

 

 

 

 

 

     

 

 

 

 

for diversion of stormwater runoff Vegetation Grasses &
around the perimeter of the area. Scattered Trees
\\ \\ 3
l\ \ \\ ) CS => == —— ji
\ : Expected Available Area] “Loperty boy
i! (*) cH 3/S ee
\ Provide a minimum 10.0m 3s 2 is 2.0m Min. offset from ee
A setback from water course nie Upstope or side et
to surface irragation and M OF abs. — Property Boundary to
\ reserve greg. Oreg, disposal area.
\ \ \\ x
\ \ \ Provide landscaped retension mound or /
| } \ \ bund for catchment of surface overflow
| | i 3 4 from area. Pump Well with
| | \\ \ Pump & Indexing Valve.
| | ff EGEND os ! E PLAN (k-Raine or eqully approved.) * ~~
ued ale 1:
@ 8H? Borehole location ABN11 147 854 439
, Title: SITE PLAN - On-Site Effluent Disposal
<—, Slope AUSTRALIAN c
2% measured as a percentage gradient from SOIL INVESTIGATIONS Project 305 Lake McDonald Dr
eee) 41/11 PROJECT AVE NOOSAVILLE Se
DO NOT DIMENSION OFF THIS DIAGRAM. Drg No. ABS-001 Ph 0428 310453 Fax (07) 5447 1904 | Date: May 2015 | DrgNo, 150105-ABS.1

 

 

 

 

 

 

Page 13

 

Plumbing Services
ca NOOSA COUNCIL pronjesaasso0
[email protected]
SITE EVALUATOR(S )

NAME: (Principal Evaluator)......Sean, Richardson
COMPANY/AGENCY.. Australi

Address.........1/11 Project Ave, Noosaville Q 4566
Phone: (......). eT NOR aches

 

 

 
  

 

  

 

SIGNATURE: @F-EVALUATOR? tcc. iaces.cinct ee OES Ecc eed. DATE: 27/05/2015

 

SITE INFORMATION

 

Location Details:

Locality: BOO YE I ee msad there eee thesomecdhedes
QW casual base te teenagers yeane paysagats Fee avape

Address: .....39

Phone:(......).

  

Site Plan Details Attached (Ref. No. or description)

Soil type and major soil consideration from soil maps etc:

Climate
Annual rainfall: 3429.00.00... mm
Data’sounce\used: s. Burcamol Met... Swanerm salty: tu: hunter sete sme yt. wtetaaie lagi heli ge uate Boe

Intended Water Supply Source:
Public Supply o Rainwater (roof collection) &

Photographs(s) or Video attached: (Please tick box) YES [] NO Wl. (Specify details):

 

ON-SITE EVALUATION

 

Work Undertaken:
Details: ...Site and Soil Assessment

Date: ...14/05/2015 | Weather: ....... ICE: A eRe eae Pee hed noe (on day and proceeding week)
Photocopy of desktop study attached (Please tick box) YES TJ NO &l (Specify details) ......0...00000 eee
Topography:

slopes OG sek Vidlor nakdetes head Nallinascbsoe Ground Cover: ....... Grassess & Scattered Trees

Geology confirm: (Piease tick box) YES 1] NO B&]

Soil landscape confirmed: (Please tick box) YES [] NO

    
 
    
 
 
 
 

 
  
 
 
 
     
  

DrainagelPattetns: .. 2.0 et. 2 see ee Site Plan details attached: YES / No: 20105-Ab e . j
Clearances 8 evcaeees. (Ae ten le. aceey aesenenas see eiaice aed Site Plan details attached: YES / NO; 190105-AB 5.1
Boundaries: .. Allowable Minimum: ...........000.......0.0000 Available:

Waterways: ..
Embankments:
Other (specify): ......
sitelmistonyAlanGlUuSe) iat fet eee) eee Seemabery, Werk) le ee Wee EA i ete eee
Environmental concerns (e.g. native plants intolerant of phosphorous load, high watertable, swamp,
WaLEIWAY WELC)! co-uc- 1. carries. fo cretoreapseus tyes ONT Gan URS RAT SMES CR PER ete et nee ete eh te ae

... Stands of trees/shrubs: ..............:...00006- Wells/bores: .
... Buildings: 15000mm

 

 

Page 14

 

 

 

 

Depth of seasonal watertable:....... cece ees eeseseeecseeereeateses

Need for cut off drains/diversions banks: ...

Needifor suntace watemecllecton/ Gut iofidlralis; 2x. -skexxccwsmvsensgraebenedanster tun cnqeranswapravenvyrernencruencesconessenuess

Treatment plant lid shall be above Q100 flood prone afea:... oo... cece eee eee een eee teeter nents setae ee

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

Reserve area available for extensions: 2.0007... ccccceeceeeereeeee % of design area:....100%. ....... eee

Photographs attached: YES L] NO K] (specify details):.0...0..0 cocci cce cee ceteeteeeeernreeteeeenserueeaneens

SOIL INVESTIGATION

Soil Profile Determination: Mark on site plan scaled or dimensioned: ...............00000. cents
Test Pit! [1 Borehole: @theh: Wl _. Rl6aseSPECify JE... s.sesecez.:0s den eigen es LA

Reporting: (Attach Bore Logs):............ccsceccceeeceeneeere eee aee ees

  
 
   

Estimated Soil Category: .....0...00..0 cece cece ener te eee cnttteeereneas

 

 

 

 

 

 

 

 

 

 

 

 

 

SUMMARYS? tay oes eaten cnn) Rane eter te ercem lees Sone Permeability:........0.00...0. m/day DLR/ DIR
Site Test 1 2 3 4 5 6 ite

Soil

Category 6 6 6

GENERAL COMMENTS

REMaiRiMGEMAttens OMCOMCEIMANS? 6. .....c cc accece enn sievecie ses cesses ensleneee se ssgjeceans Hesse pas eglyedeessselieensne es s.ana\selchlileeeee

Type of land application system considered best suited to site and why?
ASTS & Surface Irrigation - Site & Soil Assessment

Overall evaluation of minimum land application area for the site (comprising, absorption area, space between
and surrounding the absorption area elements, setbacks and the reserve area): ..........00 000s ecee eee e ences

 

  

Other Comments eg special precautions which may be needed:

 

 

 

      

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TYP@roOMBsposalt Ana Wer ee) ..cis... ceccnned end neh beg cece Bebb ceeeadueceseetscntercaeeersteleGhhee ite oesdieseutlcer tenet, deals
LE OF FAR WOK ce ce) a neir as cep canenscennnneenemetpaseneaianenenernnntaneeereqinscnenesmhennsesenenysene nnenharenagensiaceanesenenseneenaces
Emiiters spacings.. ... Spray spacings.. ‘i

Me HPOWAS eos. es nnt sealant ee es es ania Flush out valves..............cc cece eeeees Air relief valves.....0...... ee
Slope at Disposal Area............ cee eeee neces % Surface Irrigation fixed sprinklers only (max 20 % slope

Movable sprinklers spray area must cover minimum 50% of LAA, Surface Irrigation area to be mulched and
planted to ensure effluent is contained within designated area

 

ize of retention moun

Soil modifications ripped /import soil /mulched / planted (Please circle best description)

Total Load of all system on the property over 20 EP (Please tick box) YES LI NO (

Holding Tank position and size on site plan including pump out line position (Please tick box) YES 0D NO 0