as/nzs 1547:2012 and as/nzs 1547:2000 on-site ......as/nzs 1547:2012 page as/nzs 1547:2000 page...

On-Site NewZ – AS/NZS 1547:2012 and AS/NZS 1547:2000 Comparison – Part B [7 September 2012] 1

AS/NZS 1547:2012 and AS/NZS 1547:2000 On-site Domestic Wastewater Management CONTENTS COMPARISON [PART B: AS/NZS 1547:2000 LISTED ORDER]

AS/NZS 1547:2012 Page AS/NZS 1547:2000 Page NOTES re 2012 CHANGES

FOREWORD

(i) Foreword 6 Systems are to be effective and sustainable. Focus is thus on the management of risk to public health and the environment.

1 GENERAL

Part 1: General 9

1.1 Purpose of Standard 5 1.1 9 “Objective” changed to “Purpose”.

1.2.1.1 Systems covered 1.2.1 1.4.2

9 10

Adds disinfection. Adds guidelines and design manuals used by others are OK.

1.2.1.2 System size 1.2.2 9

1.2.2 Exclusions 6 1.2.3 Greywater 9 Qualifications added re recycling.

1.6 Interpretation 9 1.2.4 9

1.7 Referenced documents 10 1.3 9

1.3 Application 6 1.4 10

1.3.1 Users of this Standard 6 1.4.1 10

1.8 Legislation 11 1.5 10

1.8.1 Australia 11 1.5.1 10

1.8.2 New Zealand 11 1.5.2 10

1.8.2.1 New Zealand Building Code 11 1.5.2.1 10

1.8.2.2 Resource Management Act 11 1.5.2.2 10

7.1 Administration and management 68 1.4.2 3.4.1

10 30

Innovative and alternative systems to be assessed.

1.9 Definitions 12 1.6 11 Several new definitions added.

1.2.1 Inclusions 5 1.6.17 12 Brings domestic wastewater definition into here.

1.10 Abbreviations 18 1.7 17 Several new abbreviations added.

1.2 Scope 5 2.1.1 19

1.3.2 Requirements for sustainable functioning of on-site systems

6 2.1.2.2 19 Section modified to fit sustainability intent.

4 PERFORMANCE STATEMENTS

2.1.1 2.2.1

19 20

4.1 Primary performance objectives 30 2.2.2 20 Restructured section.

4.1.1 Public health 30 20

4.1.2 Environment 30 20

4.1.3 Community amenity 30 20

4.1.4 Resource utilisation 31 20



4.3 Primary performance requirements 32 20

4.3.1 Public health and environment 32 2.2.1 4.1.3.2

20 55

4.2 Secondary performance objectives 31 21

4.2.1 Site-and-soil evaluation 31 2.3.1 21

4.3.2 Community amenity 32 2.2.2 21

4.3.3 Resource utilisation 33 2.2.3 21 Clause simplified.

5.2.1 Performance requirements for site-and-soil evaluation

35 2.3.1 21

4.2.2 Wastewater treatment systems 31 2.4.1.3.2 22

5.4 Wastewater treatment units 41 22

5.4.1 Performance requirements for wastewater treatment units

41 2.4.1.1 2.4.1.3.2 4.3.5.1

22 22 65

Amended.

5.4.1.1 Capacity 42 2.4.1.2 4.3.4.2

22 65

5.4.1.2 Structural design 43 2.4.1.3.1 4.3.3

22 65

5.4.2 Performance criteria for wastewater treatment units

44 2.4.1.3.2 22

5.4.2.1 Design flow 44 2.4.1.1 22

5.5.1 Performance requirements for land application system design

48 2.4.1.1 22

4.2.3 Land application systems 31 2.4.1.3.3 23

5.5 Land application system design 48 2.4.1.3.3 23 Modified.

6 CONSTRUCTION, INSTALLATION, OPERATION, AND MAINTENANCE

58 Restructured section incorporating parts of sections 2, 3 and 4.

6.2.1 Performance requirements 58 2.4.1.3.4 2.4.1 2.5.1.1 3.7.1

23 24 26 40

Serviceable life is updated.

6.2.3.1 Siting 59 2.4.1.3.3 4.5.4.1

23 66

Amended.



5.4.2.2 Capacity of septic tanks 44 2.4.2.1 24

5.4.2.2.1 Capacity requirements 44 2.4.2.1 2.4.2.2.1

24 25

5.4.2.2.2 Capacity of septic tanks – Restricted water supply

45 2.4.2.2.2 25 “Reduced water supply” changed to “restricted water supply”.

5.4.2.2.3 Food waste disposal units 46 2.4.2.2.3 25 “Food waste disposal units” replaces “garbage grinders”.

6.2.2 Construction of on-site systems 59 25

6.2.2.1 Wastewater treatment units 59 2.4.2.3 4.5.3.1

25 66

5.4.1.4 Effluent quality and land application 43 2.4.2.4 4.3.5.2

26 66

6.2.1.1 Site work 58 2.5.1.2 26

6.2.1.2 Distribution system 58 2.5.1.3 27

7 ADMINISTRATIVE GUIDANCE

68 3.4 30

7.2 Construction, installation, and operation 68 3.4.2 30

7.3 Advice and education 69 3.4.3 31

3 ROLES AND RESPONSIBILITIES

Implementation Roles

32

7.4 Reports 70 3.4.4 32

7.4.1 Site-and-soil evaluation report 70 3.4.4.1 32

7.4.2 Design report 70 3.4.4.2 4.3.6 4.4.6

32 66 67

Loading certificate to be provided [content detailed in 7.4.2 (d)].

7.4.3 Installation and commissioning report(s) 70 3.4.4.3 32

7.4.4 Maintenance report

70 3.4.4.4 32

3.1 The regulatory authority 23 3.5.2 35 Expanded significantly.

3.2 Planners/surveyors/land developers 23 3.5.3 35

3.3 Site evaluators and soil assessors 27 3.5.4 35

3.4 Designers 27 3.5.5 36 To provide a “loading certificate”.

3.5 Installation contractors 28 3.5.6 37

3.6 Equipment manufacturers and suppliers 28 3.5.7 37

3.7 Maintenance and desludging/pumpout contractors 28 3.5.8 37

3.8 Property owners 29 3.5.9 38 “Home owners” changed to “property owners”.

3.9 Estate agents and property transfer agents 29 3.5.10 38



3.6 38 to 40

Education and Training section deleted

6.3 Operation, maintenance, and monitoring 62 40

6.3.1 General 62 3.7.1 40

6.3.3 Operation and maintenance procedures 62 3.7.2 40

Appendix T: Operation and maintenance guidelines (Informative)

196 40

T2 Preparation 196 3.7.3.1 40

6.3.4 Copy of operation and maintenance guidelines 62 3.7.3.2 41

6.3.5 Monitoring 63 41

6.3.5.1 General 63 3.7.4.1 41

6.3.5.2 Monitoring frequency 63 3.7.4.2 41

6.3.5.3 Community-wide schemes 63 3.7.4.3 41

6.3.5.4 Individual systems 63 3.7.4.4 41

T3 Content of operation and maintenance guidelines 196 3A3.2 41

6.3.5.5 Operation and maintenance record sheets

63 3.7.4.5 42

6.3.5.6 Maintenance certificate 64 3.7.4.6 42

6.3.6 Health 64 3.7.6 43

T5 Typical content of operation and maintenance guidelines for householders

197 3A3 44

T5.1.4 Reserve areas 199 3A4.2 45

T5.1 Description of wastewater treatment and land application systems

T5.1.1 The wastewater treatment unit

197 3A4.4.1 46 “Wastewater treatment unit” replaces “septic tank”.

T5.1.2 Land application system T5.1.2.1 Trenches T5.1.2.2 Beds T5.1.2.3 Evapotranspiration/absorption/seepage systems T5.1.2.4 Mound systems T5.1.2.5 Irrigation systems

197 198 198 198

198 198

3A4.4.2 (a) (b) (c) (d) (e)

47

T5.1.3 Distribution systems 198 3A4.4.3 48



T5.2 Operation and maintenance requirements T5.2.1 Advice to a property owner/occupier on use of the system

200 3A5.1 48

T5.2.2 Advice on maintenance 201 3A5.2 49

T5.2.3 Advice on operating problems 202 3A5.3 50

T5.3.4 Consequences of failure 202 3A5.4 50

T5.2.5 Advice on property owner/occupier responsibilities

202 3A5.5 50

T5.2.6 Advice on alternative on-site systems 202 3A5.6 51

5.2 Site-and-soil evaluation 35 4.1.2.1 54

5.5.3 Land application system design criteria 49 54

5.5.3.1 Minimum design requirements 49 4.1.2.2 4.2.3.1

54 61

5.2.2 Site-and-soil evaluation 35 4.1.3 55

5.2.2.1 General methodology 35 4.1.3.1 55 Adds requirement re risk reduction measures.

5.2.2.2 Types of site-and-soil evaluation 36 4.1.3.3 55

5.2.2.3 Site-and-soil evaluation procedure – Summary

36 4.1.3.4 55

5.2.4 Reporting 40 4.1.3.4 4.1.5

56 60

5.2.2.4 Extent and intensity of site-and-soil evaluation

37 4.1.3.6 4.1.3.2

57 55

Sewerage system option to be evaluated.

5.2.2.5 Timing of site-and-soil evaluation 38 4.1.3.7 57

5.2.3 Results of site-and-soil evaluation 38 4.1.4 58

5.2.3.1 Determination of soil category 38 4.1.4.1 58

5.2.3.2 Design loading/irrigation rate 40 4.1.4.2 58

5.5.2 Design process 48 4.2.1 4.2A1 4.2A2 4.2A3

61 111 111 111

List of systems covered is expanded.

5.5.3.2 Design output 49 4.2.3.2 61 Adds requirement for risk management assessment.

5.5.3.3 Siting considerations 50 4.2.3.3 62 Refers designer to Appendix R on setback distances.

5.5.3.4 Reserve area 50 4.2.3.4 63

5.5.3.5 Distribution system 51 4.2.3.5 4.2A6.2

63 115

5.5.3.6 Stormwater control 51 4.2.3.7 63

5.5.3.7 Land use activity 52 4.2.3.8 63

5.5.6.1 Nutrients 56 4.2.3.6 63 Refers designer to Appendix S on nutrients.



5.5.7 Reporting 57 4.2.4 64

5.4.2.3 Holding tanks 46 4.3.4.3 65

5.4.1.3 Solids management 43 4.4.4.1 4.4.4.2

67 67

5.4.1.5 Alternative toilet systems 43 4.4.5.1 4.4.1

67 67

5.4.2.4 Wastewater treatment units other than septic tanks

46 4.4.3 2.4.3.1.2

67 22

6 CONSTRUCTION, INSTALLATION, OPERATION, AND MAINTENANCE

58 Restructured section incorporating parts of sections 2, 3 and 4.

6.1 Scope 58 4.5.1 68

6.2 Construction and installation 58 4.5 68

6.2.2.2 Land application systems 59 4.5.3.2 68 Refers to Appendices L to N.

6.2.3 Installation of on-site systems 59 4.5.4 68

6.2.3.2 Pumpout 59 4.5.4.2 69

6.2.3.3 Soil 59 4.5.4.3 69

6.2.3.4 Surface water 59 4.5.4.4 69

6.2.3.5 Drainage lines 60 4.5.4.5 69

6.2.4 Installation instructions 60 4.5.5 69

6.2.4.1 Instructions 60 4.5.5.1 69

6.2.4.2 Repairs 60 4.5.5.2 70

6.2.5 Commissioning and inspections 60 4.5.6 70

6.2.5.1 Installation and validation 60 4.5.6.1 70

6.2.5.2 Commissioning of pump systems 61 4.5.6.2 70

6.2.5.4 Installation and commissioning report(s)

61 4.5.6.3 70

6.2.5.5 Manuals 61 4.5.6.4 71

APPENDICES

Appendix B: Site-and-soil evaluation procedures (Normative)

83 Appendix 4.1A 74

B1 Scope 83 4.1A1 74

B2 Desktop study B2.1 Objective B2.2 Groundwater B2.3 Site plans

83 4.1A2 74



B3 Site-and-soil check (SSC) B3.1 Matters to be considered B3.2 Reporting

84 4.1A3 75

B4 Soil assessment B4.1 General B4.2 Soil inspection procedures B4.3 Assessment of soil properties B4.4 Reporting

86 4.1A4 77 Note: 4.1A5 on nutrient loading considerations has now been replaced by a new Appendix S.

B5 Dispersive soils B5.1 General B5.2 Reclassification of dispersive soils

88 4.1A6 79

B6 Soil permeability measurement 88 4.1A7 79

B7 Reporting 88 4.1A8 79

Appendix C: Site-and-soil evaluation for planning, rezoning, and subdivision of land (Normative)

90 Appendix 4.1B 81

C1 Scope 90 4.1B1 81

C2 General 90 4.1B2 81

C3 Site-and-soil evaluation C3.1 Terrain-soil combinations C3.2 Land surface shape C3.3 Gradient C3.4 Water C3.5 Soil inspection

C3.5.1 Personnel C3.5.2 Soil survey C3.5.3 Favourable land C3.5.4 Soil sampling and inspection

C3.6 Unfavourable land C3.7 Low environmental risk C3.8 Final plan C3.9 Final plan report

90 4.1B3 81

Appendix D: Site-and-soil evaluation for individual lots (Normative)

96 Appendix 4.1C 87

D1 Scope 96 4.1C1 87

D2 Site assessment D2.1 General D2.2 Preliminary interpretation

96 4.1C2 87



D3 Soil assessment for individual lots D3.1 Soil data collection procedures

D3.1.1 Standard procedure D3.1.2 Modified procedure

D3.2 Inspection record or log

98 4.1C3 89 Expanded commentary on soil boreholes and observation pits.

D4 Reserve land application area 99 4.1C4 90

D5 Unfavourable results 99 4.1C5 90

D6 Site report 99 4.1C6 90

Appendix E: Site-and-soil properties (Normative)

104 Appendix 4.1D 95

E1 Scope 104 4.1D1 95

E2 Assessment of site exposure 104 4.1D2 95

E3 Assessment of soil colour

104 4.1D3 95

E4 Assessment of soil texture E4.1 Field assessment E4.2 Laboratory assessment

105 4.1D4 96 Table E1 (replacing Table 4.1D1) now includes Soil Category numbers.

E5 Assessment of course fragments E5.1 General E5.2 Abundance E5.3 Size E5.4 Relevance and impact

107 4.1D5 98

E6 Assessment of soil structure 108 4.1D6 99

E7 Assessment of soil dispersion 109 4.1D7 100

Appendix F: Dispersive soil and sodicity (Informative)

111 Appendix 4.1E 101

F1 Scope 111 4.1E1 101

F2 Discussion 111 4.1E2 101

Appendix G: Soil permeability measurement – Constant head test (Normative)

112 Appendix 4.1F 102

G1 Scope 112 4.1F1 102

G2 Principle 112 4.1F2 102

G3 Apparatus 113 4.1F3 102 Stopwatch included to enable set time interval to be determined.



G4 Test procedure G4.1 Single test holes G4.2 Multiple test holes

116 4.1F4 103

G5 Test results 118 4.1F5 106

G6 Test calculation 118 4.1F6 106 Correct equation now provided. Clarification provided on depth to impermeable layer.

G7 Test records 119 4.1F7 107

5.5.4 Considerations for land application system design 52 4.2A4.1 112

5.5.4.1 System selection considerations 52 4.2A4.1 112

5.5.4.2 Limiting site-and-soil factors 52 4.2A4.2 112

5.5.4.2.1 Site 53 4.2A4.2.1 112

5.5.4.2.2 Soil 53 4.2A4.2.2 113

5.5.5 Soils and LTAR/DLR/DIR values 53 4.2A5 113

5.5.5.1 Soil category/DLR/DIR values 53 4.2A5.1 to 4 113 114

These sections moved to commentary C5.5.5.2. New summary Table 5.1 of DLR/DIR values added.

5.5.5.2 Restrictive soil conditions 56 4.2A5.5 114

5.5.5.3 Improving LTAR 56 4.2A5.6 114 These sections moved to commentary C5.5.5.3.

5.3 Design flow 41 4.2A6.1 115

5.5.5.4 Evapotranspiration 56 4.2A5.7 115

Appendix L: Land application methods – Trenches, beds and ETA/ETS systems (Normative)

142 4.2A7 115

L1 General 142 4.2A7.1 4.2A8.1

115 118

L2 Selection of DLR values 142 4.2A7.2 4.2A8.2

115 118

L4 Design area sizing L4.1 General L4.2 Sizing

143 4.2A7.3 117

L5 Construction and installation 144 4.2A7.4 4.2A8.4

117 118

L3 Plants 143 4.2A8.3 118

Appendix N: Land application methods – Mounds (Normative)

170 4.2A9 120

N1 General 170 4.2A9.1 120 Emphasises mounds are not raised sand filters.



N2 Design N2.1 Sizing N2.2 Application rates

170 4.2A9.2 120 Sand loading rate (which sizes distribution bed) reduced from 50mm/day to 40mm/day.

Appendix M: Land application methods – Irrigation systems (Normative)

155 4.2A10 122

M1 General 155 4.2A10.1 and 2 122

M3 Drip irrigation (secondary effluent) M3.1 Shallow subsurface drip irrigation

156 4.2A10.2.1 122

M3.2 Covered surface drip irrigation 157 4.2A10.2.2 122

M4 Spray irrigation (disinfected secondary effluent) 157 4.2A10.2.3 122

M6 Irrigation system design M6.1 General

158 4.2A10.3.1 122 Section expanded.

M6.2 Design irrigation rate 159 4.2A10.3.2 123

M7 Irrigation area 161 4.2A10.4 123

M7.1 General 161 4.2A10.4.1 123 Use of “good quality topsoil” discussed.

M7.2 Designated area 161 4.2A10.4.2 123

M8 Spray irrigation 162 4.2A10.5 123

M2 Effluent quality requirements 155 4.2A10.6 124

M2.1 Covered surface drip and shallow subsurface drip irrigation

155 4.2A10.6.1 124

M2.2 Spray irrigation 156 4.2A10.6.2 126

M2.4 E.coli 156 4.2A10.6.3 126 Thermotolerant coliforms replaced by E.coli.

Appendix K Land application systems – Guidance on selection (Informative)

128 Appendix 4.2B 127

K1 Scope 128 4.2B1 127

K2 Application 128 4.2B2 127

K3 Limitations due to site, soil, and climatic factors K3.1 General K3.2 Salinisation K3.3 Modifications to systems K3.4 System options K3.5 Setback distances

128 4.2B3 127

K4 Selecting the land application system to fit the site and the soil

129 4.2B4 127



Appendix Q: Water balance and land application systems (Informative)

180 Appendix 4.2C 137

Q1 Scope 180 4.2C1 137

Q2 General 180 4.2C2 137

Q3 Land application water-balance 181 4.2C3 138

Q4 Water-balance and primary treated effluent Q4.1 General Q4.2 Trenches and beds Q4.3 Evapotranspiration/absorption/seepage systems Q4.4 Mounds

181 4.2C4 138

Q5 Water-balance and secondary effluent Q5.1 Secondary effluent quality Q5.2 Subsurface drip irrigation Q5.3 Covered surface drip and spray irrigation

183 4.2C5 139

Appendix H: Typical domestic wastewater flow design allowances (Informative)

121 Appendix 4.2D 141

Appendix J: Recommended capacities for septic tanks (Informative)

125 Appendix 4.3A 143

J1 Scope 125 4.3A1 143

J2 Context of use 125 4.3A2 143

J3 Septic tank capacities J3.1 Service time J3.2 All-waste septic tank capacities J3.3 Greywater septic tank capacities J3.4 Blackwater septic tank capacities

125 4.3A3 143 Expanded explanatory information provided re settling volume allowance.

J4 Pumpout frequency 126 4.3A4 144 Notes that septic tanks with outlet filters can have a reduced pumpout frequency.

L5.1 General 144 4.5A2.1 147

L5.2 Dimensions 144 4.5A2.2 4.5A3.1

147 151

L5.3 Construction details 146 4.5A2.3 4.5A3.2

147 151

L5.4 Surface water 147 4.5A3.3 151



L6 Effluent loading 147 4.5A4 151

L6.1 Gravity loading L6.1.1 Trench or bed length L6.1.2 Distribution pipe L6.1.3 Arches

147 4.5A4.1 151 4.5A4.1.4 boxed trenches (p. 150) has apparently been omitted. Their advantage is their capacity to store large volume, intermittent daily flows of effluent. The diagram for boxed trenches remains as Fig. L3.

L6.2 Discharge control trench effluent loading method for category 1 soil

147 4.5A4.2 153 Expanded details on sand media specification is provided [after 2000 version mistakenly indicated distribution aggregate in Fig 4.5A4 (p. 150)].

L6.3 Dose loading of effluent 148 4.5A4.3 153 Recommends use of LPED dose lines and automatic sequencing valves.

L7 Construction techniques L7.1 Good construction technique L7.2 Dispersive soil L7.3 Filling trenches and beds

148 4.5A5 153

L8 Installation – pipe laying 149 4.5A6 154

L9 Inspection 149 4.5A7 154

L10 Pre-commissioning tests 150 4.5A8 155

L11 Commissioning 150 4.5A9 155

L12 Marking 150 4.5A10 155

L13 Reporting 150 4.5A11 155

N3 Construction and installation N3.1 Site protection N3.2 Construction preparation N3.3 Construction of the mound

N3.3.1 Delivery pipe N3.3.2 Sand-fill media N3.3.3 Distribution bed N3.3.4 Effluent distribution network N3.3.5 Pre-commissioning tests N3.3.6 Finish of distribution bed

172 4.5B3 156 The distribution manifold in N3.3.4 is to be placed so it drains between doses.

N4 Commissioning 176 4.5B4 159

N5 Reporting 176 4.5B5 159



M9 Construction M9.1 General M9.2 Setbacks M9.3 Sloping sites M9.4 Distribution systems

M9.4.1 LPED irrigation M9.4.2 Covered surface drip M9.4.3 Spray

162 4.5C2 and 4.5D2 consolidated

160 164

Complete revision of this section to incorporate new information on sloping sites and on LPED primary effluent irrigation. New figures are provided for drip, spray and LPED irrigation (with old Figures 4.5C1 and 4.5D1 deleted).

M10 Installation M10.1 Pump system M10.2 Pipework M10.3 Solids, soil and water


160 164

Sub-surface and surface drip consolidated.

M11 Pre-commissioning tests M11.1 Drip irrigation


163 166

Sub-surface and surface drip consolidated.

M12 Commissioning 166 4.5C5 4.5D5

163 166

M13 Marking 166 4.5C6 4.5D6

163 166

M14 Reporting 166 4.5C7 4.5D7

163 166

5.5.5.1 Soil category/DLR/DIR values 53 4.2A5.1 to 4 113 114

These sections moved to commentary C5.5.5.2. New summary Table 5.1 of DLR/DIR values added.

TABLES

3.1 Implementation processes and persons involved – Essential stages

24 Table 3.1 33

5.1 Determination of soil category 39 Table 4.1.1 59

B1 Summary of investigation procedures 86 Table 4.1A1 77

B2 Soil properties 87 Table 4.1A2 78

D1 Site assessment factors – Individual lot 97 Table4.1C1 88



E1 Assessment of soil textures 106 Table 4.1D1 97

E2 Abundance of coarse fragments 107 Table 4.1D2 98

E3 Size of coarse fragments 107 Table 4.1D3 98

E4 Structure 108 Table 4.1D4 99

L1 Recommended design loading rates for trenches and beds 145 Tables 4.2A1 and 4.2A2

116 119

ETA/ETS systems consolidated with trenches and beds.

N1 Recommended mound design loading rates 172 Table 4.2A3 121

M1 Recommended design irrigation rate (DIR) for irrigation systems

160 Table 4.2A4 125 Expanded to include DIR values for drip, spray and LPED irrigation..

K1 Land application systems – Limitations due to site, soil, and climatic factors

130 Table 4.2B1 128

K2 Selecting the land application system to fit the site and the soil

135 Table4.2B2 132

J1 All-waste septic tank operational capacities 127 Table 4.3A1 143

J2 Greywater septic tank operational capacities 127 Table4.3A2 144

J3 Blackwater septic tank operational capacities 127 Table4.3A3 144

L2 Typical dimensions of conventional trenches and beds 146 Table 4.5A1 147

FIGURES

6.1 Example record sheet – Septic tank and trench system 65 Figure 3.1 43

T1 The septic tank and land application system 199 Figure 3A1 45

T2 Traditional septic 200 Figure 3A2 47

B1 Site-and-soil evaluation form: Excavation log – Example 89 Figure 4.1A1 80

C1 Site-and-soil evaluation process for subdivisions 91 Figure 4.1B1 82

C2 Slope configuration and surface drainage 93 Figure 4.1B2 84



D1 Site plan – Individual lot – Example 100 Figure 4.1C1 91

D2 Site information sheet – Example 101 Figure 4.1C2 92

D3 Site-and-soil evaluation form – Individual lot – Example 102 Figure 4.1C3 93

G1 Permeameter assembly 115 Figure 4.1F1 104

G2 Anti-scouring device 116 Figure 4.1F2 105

G3 Soil permeability field record sheet – Example 120 Figure 4.1F3 108

Q1 The natural water balance of land 180 Figure 4.2C1 137

L1 Conventional piped trench 151 Figure 4.5A1 148

L2 Self-supporting arch trench 151 Figure 4.5A2 148

L3 Boxed trench 152 Figure 4.5A3 149

L4 Discharge control trench 153 Figure 4.5A4 150 Sand fill media replaces distribution aggregate.

L5 Conventional bed 153 Figure 4.5A5 150

L6 ETA/ETS bed details 154 Figure 4.5A6 152

L7 ETA/ETS trenches 154 Figure 4.5A7 152

N1 Wisconsin mound system 174 Figure 4.5B1 157


NEW PROVISIONS 1 GENERAL

1.4 Risk management framework 7 NEW

1.5 Structure of this Standard 8

1.11 Conversion of per cent grade, slope, and gradient 19 NEW

2 RISK MANAGEMENT PROCESS

2.1 Scope 20

NEW

2.2 Performance requirement 20

2.3 The risk management process 21

2.4 Implementing risk management 22

2.4.1 Protection of public health and the environment 22

2.4.2 Organisational performance 22

2.5 Review and evaluation 22

4.2 Secondary performance objectives

4.2.4 Construction and installation 31 NEW

4.2.5 Operation and maintenance 32

5 DESIGN OF ON-SITE SYSTEMS

5.1 Scope 34 NEW

5.1.1 Overview 34 54 Includes NOTE from 4.1.1.

5.4.2.5 Disinfection 46 NEW

5.4.2.5.1 Performance criteria for disinfection

46

5.5.6 Contaminants 56 NEW

5.5.6.2 Pathogens 57 NEW 131 Replaces Note 2 to Table 4.2B1.

6.2.5.3 Other equipment 61 NEW

6.3 Operation, maintenance and monitoring

6.3.2 Performance requirements for operation, maintenance, and monitoring

62 NEW

40

6.3.7 Incidents and emergencies 64 NEW Contingency plan and troubleshooting guide required.


APPENDICES Appendix A: Risk management process guidelines (Informative)

A1 Scope A2 Context A3 Risk management process

A3.1 Introduction A3.2 Steps in the risk management process

A3.2.1 Communicate and consult A3.2.2 Establish the context A3.3.3 Identify risks A3.2.4 Analyse risks A3.2.5 Evaluate risks A3.2.6 Reduce risks A3.2.7 Monitor and review

A4 Risk management examples

71 71 72 72 72 73 74 74 75 75 76 76 76

NEW

Appendix E: Site-and-soil properties

E8 Assessment of areal porosity 109 NEW

Appendix H: Typical domestic wastewater flow design allowances

H1 Scope 121 NEW

Fully revised and split into Australia and New Zealand design flow allowance Tables. H2 Design flow and peak occupancy 121

Appendix M: Land application methods – Irrigation systems

M2.3 LPED irrigation 156 NEW

M5 LPED irrigation (primary and secondary effluent) 158 NEW

M11.2 LPED Irrigation 166 NEW

Appendix P: Disinfection (Informative)

P1 Chlorination P1.1 Disinfection apparatus P1.2 Chlorine dosing P1.3 Monitoring and maintenance

177

NEW

P2 Ultraviolet P2.1 Disinfection apparatus P2.2 Maintenance

178


Appendix Q: Water balance and land application systems

Q4.5 LPED irrigation NEW

Appendix R: Recommended setback distances for land application systems (Informative)

R1 Scope 184

NEW

R2 Application 184

R3 References/guidelines used in the development of these setback distances

190

Appendix S: Nutrients (Informative)

S1 Scope 191

NEW

S2 Sources of nitrogen and phosphorus 191

S3 Harmful effects 192

S4 Natural removal mechanisms S4.1 Phosphorus S4.2 Nitrogen

192

S5 Guidelines 194

S6 Nutrient databases 194

S7 Removal in treatment facility 195

Appendix T: Operation and maintenance guidelines

T1 Scope 196 NEW

T4 On-site system incidents and emergencies 197 NEW

Appendix U:Monitoring records for on-site systems (Informative)

U1 Scope 203

NEW

U2 Purpose of records 203

U3 Sources of data 203

U4 Monitoring forms 203

Appendix V: Comparison of sections between AS/NZS 1547:2000 and AS/NZS 1547:2012 (Informative)

207 NEW

TABLES

1.1 Slope conversion table 19 NEW


5.2 Soil categories and recommended design irrigation/loading rates (DIR/DLR) for land application systems

55 NEW

Summarises DLR and DIR values for all systems, but notes that information and detail in Tables L1, M1 and N1 take precedence over Table 5.2.

A1 Examples of design risk reduction measures 77 NEW

A2 Examples of operation and maintenance risk reduction measures

79 NEW

A3 Examples of administrative risk reduction measures 81 NEW

H1 Typical domestic wastewater design flow allowance – Australia

121

NEW

Replaces Appendix 4.2D (p. 141).

H2 Typical domestic wastewater design flow allowances for each fixture – Australia

122

H3 Typical domestic wastewater design flow allowances – Domestic wastewater from households – New Zealand

123

H4 Typical domestic wastewater design flow allowances – Domestic wastewater from commercial premises – New Zealand

124

M2 Recommended reductions in DIR according to slope 163 NEW

R1 Guidelines for horizontal and vertical setback distances 185 NEW

R2 Site constraint scale for development of setback distances 187 NEW

S1 Typical nutrient contributions for residential dwellings 191 NEW

FIGURES

1.1 Management framework for on-site systems 8 NEW

6.2 Example record sheet – AWTS and irrigation system 66 NEW

6.3 Emergency flow chart 67 NEW

A1 The risk management process 73 NEW

E1 Example of pore charts with an areal percentage of 1.5 110 NEW

M1 Drip irrigation system – Example layout of components 167

NEW

Figures 4.5C1 and 4.5D1 (p. 161 and 167) replaced. M2 Spray irrigation system – Example layout of components 168

M3 Shallow subsurface LPED irrigation – Example system 169


R1 Example of design and compliance boundaries for application of setback distances for a soil absorption system

188

NEW

R2 Example of wastewater pathways and site constraints for application of setback distances for a soil absorption system

189

U1 Monitoring form – Site information 204

NEW

U2 Monitoring form – On-site 205

U3 Monitoring form – Soil investigation 206

as/nzs 1547:2012 and as/nzs 1547:2000 on-site ......as/nzs 1547:2012 page as/nzs 1547:2000 page...

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