LAND CAPABILITY ASSESSMENT - abbg.com.au

REPORT ES152 2020 ENGINEERING SOLUTIONS ACN 11 9460 865

www.2020es.com Page 1 of 38 www.2020es.com

LAND CAPABILITY ASSESSMENT (LCA)

SITE: 35 WAIT-A-WHILE ROAD WYELANGTA VIC 3237 DEVELOPER: ARCHIER ARCHITECTURE REPORT NUMBER: ES1663 DATE: 02.03.2016 REPORTING TO:

AS 1547:2012 On-site domestic wastewater management

EPA Publication 891.3 February 2013 Code of Practice Onsite Wastewater Management

EPA Publication 746.1 Land Capability Assessment for Domestic Wastewater Management

Victorian Land Capability Assessment Framework (2nd Edition 2014) MAV, DEPI, EPA

Colac Otway Shire Council Domestic Wastewater Management Plan

2020 Engineering Solutions

1745 Colac–Forrest Road

COLAC VIC 3249

Ph: 0428 141 441 Fax: (03) 5233 4608

ABN 57 215 499 312 ACN 11 9460 865

www.2020es.com



LAND CAPABILITY ASSESSMENT (LCA) FOR ONSITE DOMESTIC WASTEWATER MANAGEMENT Objective: To assess the capability of the site to sustainably manage wastewater within allotment boundaries. (EPA Publication 746.1 March 2003).

ABOUT YOUR REPORT Land Capability Assessment Reports can be complex, involved documents bringing together numerous physical properties of the subject land with theoretical wastewater and nutrient production facilities. This report has been produced to comply with the latest MAV, DEPI and EPA LCA framework templates and documents. There are a number of suggested formats for the presentation of these reports; principally 2020 Engineering’s format follows the MAV Model. The following is a summary of the design assumptions and findings, presented for general information, designers and installers should refer to the details within the report.

REPORT SUMMARY Proposal: Construction of 3 bedroom dwelling Wastewater Production Volume: (Table 4, EPA 891.3)

(3 + 1 bedrooms) x 180 l/day = 720 l/d

Effluent System: Primary Disposal System: ETA Soil pH: 5.0 Water Balance Disposal Area: 187m2 Nutrient Balance Area: 239 m2

Effluent Management Area Refer Section 1 Site Plan



Sensitivity Consideration SPI Identification No.: 20A-b\PP3919 Property/Parcel Address: 35 Wait-a-While Road

Allotment 20A, Section 5, Parish of Wyelangta Locality: Wyelangta Zoning: Farming Area: 6.9 ha Soil Texture: 3b Soil Depth: >1.8m Soil Structure: 4a Soil Limitations: None Permeability (Ksat m/day): 0.5 – 1.5 Slope %: 5% Presence of Surface Waters: No Useable Lot Area: 800m2

EXECUTIVE SUMMARY This report recommends the installation of a primary treatment system coupled to 100m of ETA/ETS trenches covering not less than 187m2.



REPORT CONTENTS

ABOUT YOUR REPORT REPORT SUMMARY EXECUTIVE SUMMARY 1 INTRODUCTION & BACKGROUND 2 SITE INSPECTION & FIELD INVESTIGATIONS 3 AVAILABLE AREA & SETBACK DISTANCES 4 LAND CAPABILITY ASSESSMENT CONFIRMATION

4.1 PLANNING AUTHORITY LAND CAPABILITY ASSESSMENT CONFIRMATION

5 CUMULATIVE IMPACTS 6 SYSTEM SELECTION & DESIGN 7 MITIGATION MEASURES 8 SITE MANAGEMENT PLAN 9 CONCLUSION 10 SITE PLAN REQUIREMENTS 11 INSURANCE DETAILS 12 BORELOG 13 DISCLAIMER



1 INTRODUCTION & BACKGROUND Sensitivity Rating

Low x Moderate High Very High

Reporting Level

x Standard Detailed Comprehensive

Property Zoning Farming

Relevant Sensitivity Overlays

Nil

X Bushfire Management Heritage

Design & Development Land Subject to Inundation

Environmental Significance Neighbourhood Character

X Erosion Management Significant Landscape

Floodway Vegetation Protection

Note: As applies to proposed disposal site & surrounds.

Property Meets Minimum Lot Size Criteria

X Yes No

Current Land Use & Proposed Development

Current Proposed

Vacant land X Domestic development

Domestic development Non-domestic development

Non-domestic development Commercial development

Commercial development Subdivision

X Grazing land

No infrastructure



Land Capability Assessment Author Details Mr Michael Delahunty, BEng 2020 Engineering Solutions 1745 Colac-Forrest Road COLAC VIC 3249 Ph. 0428 141 441

Site Details

Address: 35 Wait-a-While Road, Wyelangta Title Details: Allotment 20A, Section 5, Parish of Wyelangta Owner:

Contact details: Alice Verheijden, Archier Architecture

Property Area: 6.9 ha

Existing/Proposed Water Supply

Yes X Proposed

Tank X Tank

Reticulated supply Reticulated supply

Other Other

Availability of Sewer

Yes No

X Not in foreseeable future



Site Plan



2 SITE INSPECTION & FIELD INVESTIGATIONS Responsible Authorities’ Zones & Overlays

Map Attached

X Yes No

Details: See Section 1 Relevant Overlays

Locality Characteristics

Domestic Water Supply Catchment

Yes X No

Details:

Site Inspection Date & Methodology

Date: 02.03.2016 AM x PM

X Visual X Auger

Soil Pits Permeability Testing

Site Assessment Aspect

North East

X South X West

Level of Constraint:

X Nil Moderate

Minor Major

Mitigation Measures:



Climate

X {Silo Data, COS Domestic Wastewater Management Plan}


Nil Moderate

x Minor Major

Mitigation Measures: Consertive DIR Erosion & Landslip

Existing x Unlikely

Potential


x Nil Moderate

Minor Major

Mitigation Measures: Fill (Imported)

Yes X No


X Nil Moderate

Minor Major

Mitigation Measures: Flooding

Yes X No


X Nil Moderate

Minor Major

Mitigation Measures: Groundwater

Present in Test Hole

Yes X No

Bores on Subject Land

Yes No

Nearest Bore

0 – 50 m X > 150 m

50 – 100 m


X Nil Moderate

Minor Major




Land Suitability

x Yes No


x Nil Moderate

Minor Major

Mitigation Measures: Landform

Waxing divergent Linear divergent Waning divergent

Waxing planar x Linear planar Waning planar

Waxing convergent Linear convergent Waning convergent


x Nil Moderate

Minor Major

Mitigation Measures: Rock Outcrops

Yes X No


X Nil <10% Moderate 10% - 20%

Minor <10% Major >20%

Mitigation Measures: Set Back Distances (see Table 1 Section 3)

X Compliant Non-compliant




X Nil Moderate

Minor Major

Mitigation Measures: Site Drainage

x Good Poor


x Nil Moderate

Minor Major

Mitigation Measures: Stormwater Run-on & Run-off

Diversion Drain

Yes x No


x Nil Moderate

Minor Major

Mitigation Measures: Slope

X 0 – 5o or 0 – 8 % 10o – 15o or 18% - 20 %

5o – 10o or 8% - 18 % > 15o or > 28%


X Nil Moderate

Minor Major

Mitigation Measures: Surface Waters

Distance

0 – 60 m X > 100 m

60 m – 100 m


X Nil Moderate

Minor Major

Mitigation Measures: Vegetation

X Grass Heavily Timbered

Lightly Timbered




X Nil Moderate

Minor Major


Soil Test Pits / Auger Holes

X Single Soil Type X 2 test pits/auger holes

Multiple Soil Type additional test pits/auger holes

Fill NA as imported soil

Visual tactile interpretation/classification.

Soil Assessment Cation Exchange Capacity

Assessment: N/A Level of Constraint:

Nil Moderate

Minor Major

Mitigation Measures: Colour & Mottling

Assessment: see below Level of Constraint:

x Nil Moderate

Minor Major

Mitigation Measures: Electrical Conductivity (EC)

Assessment: 0.06 dS/m Level of Constraint: < 2.0 dS/m

x Nil Moderate

Minor Major

Mitigation Measures: Emerson Aggregate Class

Assessment: 7 Level of Constraint:

Nil (4, 5, 6, 8) Moderate



x Minor Major (1, 2, 3)

Mitigation Measures: Permeability & Design Loading Rate

Assessment: Not done Level of Constraint:

x Nil Moderate

Minor Major

Mitigation Measures: DIR 12 pH (Water)

Assessment: 5.0 Level of Constraint: 5.5 - 8

Nil Moderate

Minor Major

Mitigation Measures: Suitable plants Rock Fragments

Assessment: No Level of Constraint:

x Nil 0% Moderate 10% - 20%

Minor <10% Major >20%

Mitigation Measures: Sodicity [Exchangeable Sodium Percentage (ESP)]

Assessment: N/A Level of Constraint: <8%

Nil Moderate

Minor Major

Mitigation Measures: Sodium Absorption Ratio (SAR)

Assessment: N/A Level of Constraint:

Nil Moderate

Minor Major




Soil Depth Assessment: 1.8m Level of Constraint:

x Nil >1.5 m Moderate 1.5 m – 1.0 m

Minor >1.5 m Major <1.0 m

Mitigation Measures: Soil Horizons (from Table E1 AS1547:2012)

Top Soil Depth

0 – 100 mm x 0 – 300 mm

0 – 200 mm > 300 mm

Sub-soil Depth

x 0 – 100 mm 0 – 300 mm

0 – 200 mm > 300 mm


x Nil Moderate

Minor Major

Mitigation Measures: Soil Categories (from Table E1 AS1547:2012)

Top Soil Texture

1

2a 2b

3a 3b

x 4a 4b 4c

5a 5b 5c

6a 6b 6c

Sub-soil Texture

1

2a 2b

3a 3b

4a 4b 4c

x 5a 5b 5c

6a 6b 6c


x Nil - 2b, 3b & 4a Moderate - 4b, 4c & 5a

Minor - 2b, 3a, 3b & 4a Major - 1, 2a, 5b, 5c, 6a, 6b & 6c

Mitigation Measures: Soil Structure (from Table E4 AS1547:2012)

Massive x Moderate

Single grained Strong

Weak



Soil Mottling

Yes x No

Top Soil Primary Colour (Munsell Gley2 Soil Chart)

Value 2.5 3 4 5 6 7 8

x

Chroma 1 2 3 4 6 8

x

Sub-soil (Munsell Gley2 Soil Chart)

Value 2.5 3 4 5 6 7 8

x

Chroma 1 2 3 4 6 8

x

Clay (Munsell 10YR Soil Chart)

Value 2.5 3 4 5 6 7 8

x

Chroma 1 2 3 4 6 8

x

Watertable Depth Visualising Victoria’s Groundwater: 20 - 50 m

Available Soil Information

x Site Classification * Other

x Landslip Risk Assessment * None Known

* Contact this office for copies of these documents



3 AVAILABLE AREA & SETBACK DISTANCES Effluent Management Area

Sufficient available area on site

X Yes No

Table 1 Applicable Setback Distances (from AS1547:2012)

Landscape Feature / Structure

Setback Distances (m)

Primary Treated Effluent

Secondary Sewage &

Grey water Effluent

Advanced Secondary Grey water

Effluent

BUILDING Wastewater field up-slope of building X 6 3 3

Wastewater field down-slope of building X 3 1.5 1.5

Wastewater field up-slope of cutting/escarpment X 15 15 15

ALLOTMENT BOUNDARY Wastewater field up-slope of adjacent lot X 6 3 1

Wastewater field down-slope of adjacent lot X 3 1.5 0.5

SERVICES Water supply pipe X 3 1.5 1.5 Wastewater field up-slope of potable supply channel X 300 150 150 Wastewater field down-slope of potable supply channel X 20 10 10

Gas supply pipe X 3 1.5 1.5

In-ground water tank X 15 4 3

Stormwater drain X 6 3 2

RECREATION AREAS Children’s grassed playground X 6 3 2

In-ground swimming pool X 6 3 2

SURFACE WATERS UP-SLOPE OF Dam, lake or reservoir (potable water supply) X 300 150 150

Waterways (potable water supply) X 100 100 50

Waterways, wetlands (continuous or ephemeral, non-

potable); estuaries, ocean beach at high-tide mark; dams, lakes or reservoirs (stock & domestic, non-

potable)

60

30

30 X

GROUNDWATER BORES Category 1 & 2a soils NA 50 20

Category 2b – 6 soils X 20 20 20

WATERTABLE Vertical depth from base of trench to highest seasonal water table

X

1.5

1.5

1.5

Vertical depth from irrigation pipes to highest seasonal water table

NA

1.5

1.5

4 LAND CAPABILITY ASSESSMENT CONFIRMATION



Effluent Management Area Refer Section 1 Site Map

Sensitivity Consideration SPI Identification No.: 20A-B\PP3919 Property/Parcel Address: 35 Wait-a-While Road Locality: Wyelangta Zoning: Farming Area: 6.9 ha approx.. Soil Texture: 3b Soil Depth: >1.8m Soil Structure: 4a Soil Limitations: None Permeability (Ksat m/day): 0.5 – 1.5 Slope %: 5% Presence of Surface Waters: > 200 m Useable Lot Area: 800m2

4.1 PLANNING AUTHORITY LAND CAPABILITY ASSESSMENT CONFIRMATION

Date Received:

1. Forwarded to Referral Authority: Yes No

Authority Name: Date Forwarded:

Response within Statutory Time Frame: Yes No

Referral Authority Advice Conforming: Yes No

Reason for Non-Conformance:

2. Forwarded to Referral Authority: Yes No

Authority Name: Date Forwarded:

Response within Statutory Time Frame: Yes No

Referral Authority Advice Conforming: Yes No

Reason for Non-Conformance:

Planning Authority Advice Conforming: Yes No

Date Assessed:

Responsible Planning Officer:



5 CUMULATIVE IMPACTS

Cumulative Detrimental Impacts

Anticipated

Yes x No

Details:

Pathogen Transport Concerns Soil Model based upon site investigation and proposed disposal system. N/A Permeability Curve at 100hr

Viral Die-off Curve* Experimental GFP E.coli data and HYDRUS optimization (a) and trial-and-error; (b) simulation for the sandy loam soil at 4 cm, 14 cm and 25 c depth. The log-normal inserts emphasize the tailing phase. Viral Die-off Curves Vertical line set at 100hr as per permeability model gives die-off distance of 7.0m at 14cm. This distance is available on the subject land. *Transport of Pathogen Surrogates in Soil Treatment Units: Numerical Modeling

Ivan Morales 1, Janet A. Atoyan 2, José A. Amador 2 and Thomas Boving 1,3,*

Department of Civil and Environmental Engineering, University of Rhode Island, Kingston, RI 02881,

USA

Laboratory of Soil Ecology and Microbiology, University of Rhode Island, Kingston, RI 02881, USA

Department of Geosciences, University of Rhode Island, Kingston, RI 02881, USA

6 SYSTEM SELECTION & DESIGN

Wastewater Load Design

Number of Bedrooms in Development

1 2 X 3 4 5 6

Standard Water Fixtures

X Yes No

Water Reduction Fixtures

Yes No

Organic Load 25 mg/l



Existing System

Yes X No

Primary Treatment System Secondary Treatment System

Target Effluent Treatment Quality

X Primary System Standard Secondary System Standard

Capacity of Land to Assimilate Wastewater

Primary Treatment System

X Complies Non-compliant

Secondary Treatment System

Complies Non-compliant

Domestic Wastewater Management System

System Description

X Attached Developer to Supply

Location Refer below

Effluent Land Application Options

Suggested Options

Drip & Spray Irrigation Systems – secondary treated effluent only

Conventional Absorption Trenches & Beds – primary or secondary

treated effluent

X Evapotranspiration-Absorption Trenches & Beds – primary or secondary

treated effluent (Cat. 1-5) & secondary treated effluent only (Cat. 6)

LPED Irrigation Systems – primary or secondary treated effluent

Wick Trenches & Beds – secondary treated effluent only

Recommended System: Location of Application Area Refer Section 1 Site Plan



Annual Nutrient Balance



Water Balance Calculation



Site Specific Hydraulic Design



7 MITIGATION MEASURES

Required

Yes X No

Suggested Measure/s

Stormwater management

Soil amelioration

Vegetation establishment & management

Details:

8 SITE MANAGEMENT PLAN

Attached

X Yes No

PROPERTY MANAGEMENT PLAN

SITE: 35 WAIT-A-WHILE ROAD WYELANGTA VIC 3237

DEVELOPER: ARCHIER ARCHITECTURE

REPORT NUMBER: ES1663

DATE: 02.03.2016

REPORTING TO: AS 1547:2012 On-site domestic wastewater management

EPA Publication 891.3 February 2013 Code of Practice Onsite Wastewater Management Wannon Water

2020 Engineering Solutions

1745 Colac–Forrest Road

COLAC VIC 3249

Ph: 0428 141 441 Fax: (03) 5233 4608

ABN 57 215 499 312 ACN 11 9460 865

www.2020es.com



CONTENTS

1 PREAMBLE 1.1 Property Owner Responsibilities

2 EMERGENCY CONTACT NUMBERS

3 SITE PLAN

4 DETAILS OF WASTEWATER TREATMENT SYSTEM

5 DETAILS OF THE EFFLUENT DISPOSAL SYSTEM

6 WASTEWATER TREATMENT SYSTEM MAINTENANCE

7 LAND APPLICATION AREA (Effluent Disposal) OPERATION & MAINTENANCE

8 HOUSEHOLD MANAGEMENT OF WASTEWATER 8.1 Sludge Build Up Reduction 8.2 Encourage Bacteria 8.3 Reduce Effluent Volume Load

9 CONTINGENCY PLAN

10 SITE OPERATIONS & MAINTENANCE LOG

11 IDENTIFICATION, RISK ASSESSMENT & CONTROLS FOR OTHER POTENTIAL THREATS TO DOWNSTREAM WATER QUALITY

Appendix 1 MAINTENANCE LOG



1 PREAMBLE

This Property Management Plan is intended for use by property owners in Wannon Water drinking water supply catchments. It is written for occupancies with onsite wastewater treatment systems, but also applies to other developments where management of risk to downstream water quality is required. This document must not be considered a definitive plan or control for all properties and wastewater systems. The landowner property management plan is drafted with consideration to planning permit requirements, EPA Publication 891.3 “Code of Practice Onsite Wastewater Management”, the Land Capability Assessment, and AS1547:2012 “On-site domestic wastewater management”. The plan must be maintained by the landowner and amended when required. Any increased loading on the property or system failure requires the review of the existing Land Capability Assessment and Waste Water Management System. Any amendment to the plan must be submitted to Wannon Water for endorsement. The plan must be kept on site and be available for inspection by Council or other government agencies.

1.1 Property Owner Responsibilities Property owners and occupiers are responsible for reducing risks to downstream water quality that originate from their property. This includes: - ensuring pipework & wastewater systems don’t leak;

- keeping wastewater systems well maintained & in good repair;

- appropriately managing herbicides, pesticides & other chemicals;

- minimising erosion & sediment movement;

- maintaining buffers of native vegetation around watercourses;

- compliance with Council and EPA requirements; and

- implementing this Property Management Plan.



2 EMERGENCY CONTACT NUMBERS

PROPERTY MANGEMENT PLAN FOR 35 WAIT-A-WHILE ROAD, WYELANGTA VIC 3237

EMERGENCY OR ONSITE WASTEWATER MAINTENANCE CONTACT NUMBERS POLICE, AMBULANCE, FIRE 000

PLUMBER To be advised

ELECTRICIAN To be advised

COUNCIL ENVIRONMENTAL HEALTH OFFICER

COLAC OTWAY SHIRE 03 5232 9400

EPA 1300 372 842

SYSTEM SUPPLIER COLAC CEMENT PRODUCTS 03 5231 5231

SYSTEM SERVICE AGENT COLAC CEMENT PRODUCTS 03 5231 5231

SEPTIC PUMPOUT TANKER RICHARDSON’S LIQUID WASTE 03 5234 6585

WANNON WATER 1300 926 668

If any of the following incidents, which could impact on downstream water quality, occur on site they should be reported to Wannon Water immediately:

Chemical spill Fuel spill Bushfire Landslip

3 SITE PLAN

Site plans drawn to scale (attached) show dimensions and include the following details: - the site address, including lot number & street number;

- title boundaries;

- direction of north;

- location of groundwater bores on the site & adjacent properties;

- contour lines (at 1 - 10 m intervals), or direction of slope & slope in percent;

- location of dams & waterways onsite & within 100m of the property;

- drainage lines & springs;

- stormwater cut-off drains adjacent to land application area & treatment system;

- location of actual & proposed buildings, sheds, driveways, paths & paddocks;

- location of actual & proposed infrastructure, especially drains;

- location & dimensions of the wastewater treatment plan; and

- location & dimensions of the land application area.

The site plan must be amended when any of the above details change (including on issue of as-constructed drawings), and the amended plan must be provided to Wannon Water.



4 DEATAILS OF THE WASTEWATER TREATMENT SYSTEM

The plan requires the following details of the wastewater treatment system: - manufacturer’s manuals & spare parts list;

- as-installed drawings;

- copy of EPA Certificate of Approval;

- copy of Council wastewater system permit;

- description of the maintenance regime, to meet manufacturer’s recommendations & the maintenance, monitoring & reporting requirements of the Council permit & the EPA certificate of approval; and

- in the case of a secondary treatment system, a copy of a current service contract with an accredited or experienced trained service technician to implement the maintenance regime.

All details relevant to the above will be available and submitted after issue of the permit as they are post developmental. NOTE: Developer can supply following information post construction as most documentation relies upon approval to construct development and install a system. Included as example only. 2020 Engineering Solutions is independent and does not recommend particular systems.



5 DETAILS OF THE EFFLUENT DISPOSAL SYSTEM

The plan requires the following details of the effluent disposal system: - manufacturer’s manuals & spare parts list for components including pumps,

valves, and filters;

- as-installed drawings; and

- description of the maintenance regime, to meet manufacturer’s recommendations & the maintenance, monitoring & reporting requirements of Council & the EPA. At a minimum, visual inspection of the land application area is required whenever the treatment system is inspected.

All details relevant to the above will be available and submitted after issue of the permit as they are post developmental.

6 WASTEWATER TREATEMENT SYSTEM MAINTENANCE The waste water treatment system, including its pipework shall: - be inspected & maintained as per the maintenance regime;

- be protected from vehicle, farm machinery or livestock damage;

- have any grease trap inspected at least quarterly & cleaned out regularly;

- have any vents kept clear & access covers in working order;

- be visually checked for damage especially after being pumped out - damage is to be repaired; and



- be replaced if not operating adequately.

Inspections of treatment units are to be recorded on the operation and maintenance log as well as any defects and repairs undertaken.

7 LAND APPLICATION AREA (Effluent Disposal) OPERATION & MAINTENANCE

The following measures shall be implemented: - the land application area & disposal system shall be inspected & maintained as

per the maintenance regime;

- any evapotranspiration areas shall be designed to exclude vehicle, farm machinery, or stock access;

- surface water diversion drains shall be maintained upslope of & around the land application area & kept clean; and

- roof water drainage / hard stand drainage must be diverted away from the land application area.

Evapotranspiration and irrigation areas shall: - have their grass mown & plants maintained to ensure these areas take up

nutrients with maximum efficiency;

- be checked for wet spots, uneven grass colour 7 symptoms of emitter blockage (evidenced by under-irrigated dry areas or over-irrigated wet areas); and

- have blocked or damaged irrigation lines replaced. Equipment shall be checked in the following manner: - the manufacturer's instructions for maintaining & cleaning pumps, siphons &

septic tank & outlet filters shall be followed; - disc filters or filter screens on irrigation-dosing equipment shall be cleaned at

least annually by rinsing back into the primary wastewater treatment unit; and - irrigation lines shall be flushed at least annually to scour out any accumulated

sediment.

Inspections are to be recorded on the Operations Log as well as any defects and repairs undertaken.



8 HOUSEHOLD MANAGEMENT OF WASTEWATER The following measures should be implemented for optimum performance of system.

Sludge Build Up Reduction

- food waste including fats, grease & oils shall be disposed of in composting bin or worm farm

- no food waste disposal unit shall be installed

- sanitary napkins & hygiene products shall be disposed of in garbage

8.1 Encourage Bacteria

- use biodegradable soaps

- use low-phosphorus detergent

- use low-sodium detergent where soils are dispersive

- limit the use of cleaners such as bleaches, whiteners, nappy soakers & disinfectant, especially for toilet/shower cleaning

- do not put chemicals, thinners or paint down the drain or gulley trap

8.2 Reduce Effluent Volume Load

- install & use water conserving fittings ie. shower heads & appliances

- wash full loads only in dishwasher & washing machine

- avoid system overload ie. 1 washing machine load per day & run washing machine & dishwasher at different times

- do not install a spa bath

9 CONTINGENCY PLAN The plan below shall be followed for a sudden failure of the wastewater system. A generalised flow chart of actions to be taken is:



(Figure 6.3 from AS1547:2012)

10 SITE OPERATIONS & MAINTENANCE LOG A site operation and maintenance log shall be kept for any wastewater system. This will assist in the determination of recurring problems/trends. The maintenance log is to show when scheduled maintenance is due. Matters to be recorded in the log include: - pump out records;

- service records;

- inspections; and

- records of all irregular operation & response actions. Copies of programmed maintenance and pump out (desludging) works performed by maintenance contractors, as required by the Council (septic tank) permit, are to be



forwarded to the Council Environmental Health Officer. A copy of the latest maintenance certificate is to be retained with this property management plan and recorded on the maintenance log.

11 IDENTIFICATION, RISK ASSESSMENT & CONTROLS FOR OTHER POTENTIAL THREATS TO DOWNSTREAM WATER QUALITY

The landholder is required to identify and assess the risk of other potential threats to downstream water quality, resulting from the development and use of the property ie. - erosion risks; and

- risks from storage & application of chemicals. Construction methods should be carried out in a manner which will minimise soil, sediment and nutrient movement from the property to water courses during development and use of the property. Potential sources of sediment movement to consider are: - tracks & driveways;

- high traffic areas (vehicular, human, animal); and

- construction areas (occupancy, roads, fencing). The design of stormwater run-off from the site should be described. Activities to encourage native vegetation retention and re-establishment within a 30 metre buffer zone along waterways, and to exclude stock from waterways, should be described. Activities to prevent the spread of noxious weeds should be described. Chemicals such as herbicides and pesticides can be a risk to downstream water quality. The landowner should follow manufacturer’s instructions and be familiar with the advice available from: http://www.depi.vic.gov.au/agriculture-and-food/farm-management/chemical-use. Procedures for chemical application and storage should be described in the Property Management Plan. Businesses should contact Wannon Water to determine if a water quality monitoring program immediately up and down stream of works that pose a significant threat to water quality is required. This may include: - analytical monitoring of turbidity following large-scale activities that could

potentially result in sediment movement (e.g. cultivation, harvesting); and

- monitoring of the active ingredients within herbicides and pesticides following intensive and broad scale herbicide/pesticide applications.

http://www.depi.vic.gov.au/agriculture-and-food/farm-management/chemical-use

http://www.depi.vic.gov.au/agriculture-and-food/farm-management/chemical-use



Appendix 1 Maintenance Log Template

Treatment System Inspections, Maintenance & Repairs

Due Date (if scheduled)

Actual Date of Activity

Name of Inspector/ Contractor

Description of Work, Observations & Comments

Effluent Disposal Area Inspections, Maintenance & Repairs

Due Date (if scheduled)

Actual Date of Activity

Name of Inspector/ Contractor

Description of Work, Observations & Comments

9 CONCLUSION This report recommends the installation of a primary treatment system coupled to 100m of ETA/ETS trenches covering not less than 187m2.



Site Plan



10 SITE PLAN REQUIREMENTS X a. Site address, including property/parcel

number & street number

X b. Title boundaries

X c. Council zoning & Environmental Significant

Overlays

d. Type of catchment (potable or other special

water supply catchment)

X e. Direction of north

X f. Location of groundwater bores

g. Contour lines (2m intervals from survey plan Refer to Planning Map

or Council provided data), direction of slope

& grade

X h. Location of soil test pits / auger holes

i. Location of significant site features (rock Nil on site

outcrops, waterlogged regions etc.)

X j. Location of intermittent & permanent Nil on site

surface waterways (dams, creeks, reservoirs

& springs)

k. Location of 1% & 5% Annual Exceedence

probability flood level contour lines

X l. Location, depth & specified use of

groundwater bores on site & adjacent

properties from the register of the relevant

Rural Water Corporation

m. Depth to groundwater table in winter (if less 20 – 50 m

than 2.1 m deep)

X n. Vegetation cover

X o. Relevant setback distances (EPA Code of

Practice Table 5)

X p. Location of existing & proposed buildings,

sheds, driveways, paths & any other

improvements

X q. Available effluent management area/s

X r. Location of proposed land application area

(to scale)

s. Location of proposed stormwater cut-off

drains adjacent to the land application area

X t. Location of proposed domestic wastewater

management system

X u. Location of reserve land application area (to

scale



11 INSURANCE DETAILS



12 BORELOG 2020 ENGINEERING SOLUTIONS BORE LOG REPORT: ES1663 SITE: 35 WAIT-A-WHILE ROAD, WYELANGTA VIC 3237 DATE: 02.03.2016

Depth in mm

Depth in mm

Depth in mm

#1 #2 #3 000 000 000 SAND SILTY Brown 300 300 300 CLAY SILTY Orange Brown Moist Semi Plastic Very Firm 1400 1300 1200 SANDSTONE Orange Brown Moist Ex Weath Low Strength

1800 1800 1400 Weath #3 END END END

Au

ger

Ref

usa

l

on

San

dst

on

e



13 DISCLAIMER

Documents

LAND CAPABILITY ASSESSMENT - abbg.com.au