volume 2: sewerage code file no. 25270e revision 2: august

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SUPPLEMENT TO THE WATER SERVICES ASSOCIATION

OF AUSTRALIA SEWERAGE CODE OF AUSTRALIA

(WSA02-2002 V2.3)

VOLUME 2: SEWERAGE CODE

FILE No. 25270E

Revision 2: August 2014

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Document Control This document is an electronically controlled document available on Council’s website. Maintenance of this document will be the responsibility of Shoalhaven Water’s Systems Development Engineer.

Prior to being updated, any proposed amendments to this document shall be approved by the Shoalhaven Water, following consultation with other key stakeholders. Following consultation and approval, amendments made to this document shall be updated on Council’s website. The following table outlines the amendments that have been made to this document since it was initially issued.

RECORD OF AMENDMENTS Page No.

Sect Issue Date

Comment Page No.

Sect Issue Date

Comment

12 4.3.4.1 Changed from 2.5m to 2.4m

39 - 54 Stand DWG

Updated DWG added

14 4.5.4 Changed from 150mm to 100mm

20 - 24 Appendix A

Updated ET tables to current

14 4.5.4 Increased maximum junction length to 20m

15 4.6 Added concrete encasement for sewer 3m+ and use of HDPE sewer tech pipe for deep sewers

16 5.3.3 Added SW approval 16 5.4 Clarified statement 16 5.6.1 Reduced boundary

offset for RJ and SJ to minimum 1m

16 5.8 Changed to be consistent with sect 4.5.4

20 8.10 Deleted final statement

21 9.3.2 Included technical specifications

29 & 30

App C Corrected DWG number

36 22.7 Added CCTV specifications

37 23.2.3 Deleted 150mm junction as per 4.5.4

37 26 Included current standards

40 29.5 Deleted 150mm junction requirement as per 4.5.4.

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Foreword It gives me great pleasure to present this comprehensive construction standard and specification for sewerage works. The standard is designed to provide consistency in the provision of sewerage infrastructure across the Shoalhaven City area, independent of the body or organization undertaking the work. The standards are based on the Water Services Association of Australia Sewer Code with the appropriate changes (as outlined in this Supplement) to suit local or historical standards. The historical standards will ensure new sewerage systems are compatible with existing infrastructure for operational purposes. I commend the standard to you, and am confident it will deliver more effective sewerage services to the City. Carmel Krogh Director Shoalhaven Water Group Shoalhaven City Council

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Table of Contents

1.0 Introduction ......................................................................................................... 5 1.1 National Codes Initiative ............................................................................ 5

1.2 Shoalhaven Water’s Codes ....................................................................... 5

2.0 Shoalhaven Water’s Sewerage Code ................................................................ 6

2.1 Document Improvement ............................................................................. 6

3.0 Variations to Part 0 of the Code: Glossary of Terms, Abbreviations and

References ......................................................................................................... 8

4.0 Variations to Part 1 of the Code: Planning & Design ....................................... 9

5.0 Variations to Part 2 of the Code: Products and Materials ............................... 29

6.0 Variations to Part 3 of the Code: Construction ................................................ 32

7.0 Variations to Part 4 of the Code: Standard Drawings ..................................... 36

8.0 SW Standard Drawings ……………………………………………….40 to 56

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1.0 INTRODUCTION

1.1 National Codes Initiative The Water Services Association of Australia (WSAA) has developed a series of national codes of practice covering the design and construction of water and wastewater infrastructure. The benefits of these national codes are:

to facilitate consistent national reform and regulation of the water industry;

to provide a transitional mechanism for sharing water-industry specialist expertise as internal Water Agency resources diminish;

to provide a common technical reference for the development of industry training and skills accreditation programs for private sector suppliers;

to enhance the mobility of suppliers eg designers and constructors by reducing parochial technical impediments to trade; and

improve the Australian water industry’s interface with international companies

1.2 Shoalhaven Water’s Codes With these benefits in mind, Shoalhaven Water will be progressively adopting the following codes as the foundation to its technical specification for the design and construction of water, wastewater and reclaimed water assets in the Shoalhaven Local Government Area:

WSAA Polyethylene Pipeline Code - WSA01-2004

WSAA Sewerage Code of Australia - WSA02-2002 V2.3

WSAA Water Reticulation Code of Australia - WSA03-2002 V2.3

WSAA Sewage Pumping Station Code of Australia - WSA04-2005 V2.1

WSAA Conduit Inspection Reporting Code of Australia - WSA05-2008 V2.2

WSAA Pressure Sewerage Code of Australia – WSA07 – 2007 V1.1 Shoalhaven Water will develop a Supplement to each Code which will contain additional information to cover:

Shoalhaven Water’s detailed requirements for specific matters which the Code anticipates individual water agencies will address

Variations to the Code where its requirements are not compatible with Shoalhaven Water’s specific requirements

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2.0 SHOALHAVEN WATER’S SEWERAGE CODE The WSAA Sewerage Code of Australia (WSA02-2002 V2.3) (the Code), together with this Supplement (the Supplement), comprises the Shoalhaven Water Sewerage Code for reticulated gravity wastewater systems up to and including 300mm diameter.

2.1 Document Improvement The Supplement is a live document that will be continually reviewed and periodically updated to ensure it reflects Shoalhaven Water’s desire to be at the forefront of Water Industry Best Practice Procedures, and to reflect changes in Council’s Policy. Stakeholders are invited to comment on the Supplement at any time by using the Document Improvement Request Form on the following page. This form may be photocopied.

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DOCUMENT IMPROVEMENT REQUEST

SHOALHAVEN WATER’S SUPPLEMENT TO THE SEWERAGE CODE of Australia

TO: Systems Development Engineer fax: 4429 3170

Shoalhaven Water

PO Box 42, NOWRA NSW 2535 email: [email protected]

FROM: Name: ………………………………………………………………………………………………

Position/Title: ……………………………………………………………………………………....

Branch/Company: ………………………………………………………………………………….

Address: ……………………………………………………………………………………………

Email: …………………………………….. Phone: …………………….. Fax: …………………

Signature: ……………………………………………….. Date: ………………………………….

SUBJECT: ……………………………………………………………………………………………………

Section/Clause: ………………………………………………. Page Nos: ……………………………….

Proposed Improvement: (Attach photocopy of the original section/clause/page with your comments and nay supporting

documentation)

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OFFICE USE ONLY

Outcome of Review:

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………………………………………………………………………………………………………………

Comment/Decision:

………………………………………………………………………………………………………………

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Planning & Development Manager: …………………………………….. Date: ……./……../………

Shoalhaven Water Director: …………………………………………….. Date: ……./……../………

mailto:[email protected]

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3.0 VARIATIONS TO PART 0 OF THE CODE: GLOSSARY OF TERMS, ABBREVIATIONS AND REFERENCES

GLOSSARY OF TERMS The definition of the following terms is to be amended as follows: Concept Plan A package of information that is to be provided as required by

Shoalhaven Water to enable the appropriate planning/design of major sewerage system comments to be performed.

Add the Following Terms and Definitions Water Agency

Shoalhaven Water Group of Shoalhaven City Council, “Shoalhaven Water”

Equivalent Tenement (ET)

The equivalent hypothetical residential 1 lot tenement that would produce the same peak dry weather flow as that contributed by the area under consideration i.e. all zonings including residential, commercial and industrial. 1ET = 4EP

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4.0 VARIATIONS TO PART 1 OF THE CODE: PLANNING & DESIGN

General All references to “Equivalent Population” and “EP” can also be read as “Equivalent Tenements” and “ET”, respectively where 1ET = 4EP. The Director, Shoalhaven Water or the appointed Delegated Authority has the authority to allow variations to this Standard on particular projects, if the circumstances warrant a variation. All limiting dimensions and grades are to be “as executed“. The design shall allow for construction tolerances. All references to Maintenance Shafts (MSs), Horizontal and Vertical Bends shall be deleted, as these are not permitted for use by Shoalhaven Water. 1.3.2 (Page 39) Delete the existing clause, except the first sentence, and insert the following: Shoalhaven Water shall approve any Concept Plans (in accordance with Shoalhaven Water’s Development Servicing Plan) that maybe required to be prepared before detailed sewer designs are undertaken. Concept Plans will generally include an appropriate point of sewer connection, future and proposed upstream sewer loadings and any downstream augmentation works that maybe required. Concept Plans shall also address any operational issues that may arise as a result of proposed sewer works. 1.3.3 (Page 39) At the end of the second paragraph after “development agreement” insert the following: or Shoalhaven Water Development Application Notice.

1.3.3 (Page 39) Replace the paragraph beginning “If the Water Agency does not provide a Concept Plan” with the following: The designer is to provide a Concept Plan, if required by Shoalhaven Water, for approval, before a detailed sewer design is undertaken. 2.1.3 (Page 46) In sub-clause (a), replace DN 300 with DN 225. Delete sub-clause (b). In sub-clause (c), replace DN 750 with DN 225. In the paragraph beginning “These descriptions”, delete the following: “while DN 100 pipes may be acceptable as reticulation sewers subject to the approval of the Water Agency”.

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3.1 (Page 52) Delete all paragraphs after the first paragraph, excluding the last paragraph but including Figure 3.1, and insert the following: Estimated Design Flow (PWWF) = PDWF + SA; where:

PWWF = Peak Wet Weather Flow

PDWF = Peak Dry Weather Flow = ADWF (Average Dry Weather Flow) x r

r = Catchment size dependant coefficient

SA = Storm Allowance 3.2.1 (Page 52) After the first paragraph, insert the following: The methodology specified by Shoalhaven Water to estimate design flows

shall be the methodology as outlined below:

ADWF = 0.0083L/s/ET (180L/d/EP); where 1ET = 4EP = loading from a residential lot (Determination of Equivalent Tenements, ET’s is shown in Appendix A of this Supplement)

PDWF = r x ADWF; where r = √(1.74 + 56/ET0.4) for loading > 30ET’s; or, r = √((2.13 + 44/ET0.5 + 970/ET1.5 + 59/ET2.5) for loading ≤ 30ET’s

Storm Allowance = 0.03L/sec/ET for new systems, post 2001, and

Storm Allowance = 0.058L/sec/ET for existing systems.

Shoalhaven Water may consider allowing other methods for estimating design flows where it deems these are appropriate. 3.2.5 (Page 53) Delete the existing clause and insert the following:

A flow schedule stating population projections, zoning, sizing and grades shall be prepared for all sewer deviations and the construction of sewers >DN225.

4.1 (Page 54) After the first sub-paragraph, (a), insert the following:

Shoalhaven Water shall be consulted regarding the means to address downstream impacts of flows from the proposed development.

4.2.4.3 (Page 57) After the last paragraph, insert the following text:

The appropriate approvals (Tree Preservation Order Exemption or Development Application etc) shall be obtained from the appropriate section of Council prior to the removal of any fallen or standing trees. Trenching within 1m of the dripline of any significant tree shall not be permitted unless approved by a qualified arborist and SCC. Consideration shall be given to underboring the tree with PE pipe to avoid root penetration.

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4.2.4.4 (Page 56) After sub-clause (g), insert the following:

Location maps of acid sulphate soils in NSW are published by the Department of Environment, Climate Change & Water (Refer: http://www.environment.nsw.gov.au/acidsulfatesoil/riskmaps.htm).

4.2.5 (Page 58) Amend the last paragraph to read: “Easement widths and placement of sewer mains within easements shall be as directed by the Water Agency.” After the last paragraph, insert the following:

Easements over gravity sewer mains are to be of the width outlined below: Sewers < 2.5m deep, 2.4m wide Sewers > 2.5m deep, 4.0m wide

4.2.6 (Page 58) After the first paragraph, insert the following:

Shoalhaven Water shall be consulted for written instructions regarding disused sewers.

4.3.2 (Page 58) After the first paragraph, insert the following:

A sewer within a public road or reserve is not considered to be available to an adjacent property, and therefore the sewer must be extended into the property. A sewer located in a drainage reserve should, where practicable, be located parallel and adjacent to the drainage system.

In the last paragraph, add after “road pavement”: and/or table drain.

4.3.4 (Page 59) In the second paragraph, replace “minimum offsets of 1.0m” with “the offsets as detailed below”. At the end of the last paragraph insert the following:

Sewers within the zone of influence shall be constructed in accordance with Shoalhaven Water’s Building Over Sewers Policy.

After the last paragraph, insert the following: 4.3.4.1 Preferred Gravity Sewer Alignment in Residential Areas

Shoalhaven Water’s preferred location for gravity sewers is within private property. Sewers shall be located as follows: 1. Generally 1.2 metres inside front boundaries. This distance will vary on

curved front boundaries where the sewer shall be kept well clear of the building alignment.

2. Generally 2.4 metres inside rear boundaries where there is interallotment drainage (IAD) at 1.0 metre inside the rear boundary. The sewer alignment inside rear boundaries shall be reduced to 1.2 metre where there is no rear IAD.

http://www.environment.nsw.gov.au/acidsulfatesoil/riskmaps.htm

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3. Generally 1.2 metre inside side boundaries. This will vary on corner blocks due to splayed boundaries. Sewers inside side boundaries shall be concrete encased for the length of the side building alignment plus one metre either end or to the next flexible joint.

4.3.4.2 Gravity Sewer Alignment in Industrial Areas Where sewers are to serve industrial lands, they should, if practicable, be located along the front of properties. However, if this is not possible, sewers should be adjacent and parallel to the rear boundaries or side boundaries and, as it is likely that the sewers will be built over, they should be positioned approximately 2m off those boundaries and concrete encased.

4.3.7 (Page 60) Delete all paragraphs and replace with the following: Shoalhaven Water does not permit the use of Horizontal Bends. 4.4.4 (Page 61) At the end of the first paragraph, insert the following:

If the zone of influence cannot be avoided, the design and construction of sewers to be located within the zone of influence of structures shall be in accordance with Shoalhaven Water’s Building Over Sewers Policy.

4.4.5.2 Table 4.2 (Page 62) Delete the existing Table 4.2 and replace with:

Utility (Existing Service)

Minimum Horizontal Clearance (mm)

Minimum Vertical Clearance

(mm) New Sewer Size

<DN300 >DN300

Sewers 600 600 300

All Gas mains 600 600 300

Telecommunication conduits & cables

600 600 300

All Electricity conduits and cables

1000 1000 300

Drains 1200 1200 3004

Water mains 1000 1000 5004

Kerbs 300 600 600

After note 6, insert the following:

7. A sewer constructed under an existing or proposed stormwater pipe ≥ DN600 or a channel shall be concrete encased. The concrete encasement shall extend at least one metre each side of the stormwater pipe or one metre either side of the zone of influence of the channel. Clearances shall be determined from the top of the concrete encasement. Reference shall be made to Shoalhaven Water’s Building Over Sewers Policy 8. Common trenching is not permitted.

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4.5.1 (Page 63) After the last paragraph, insert the following:

Refer to Appendix B of this Supplement, for sizing and grading of reticulation sewers, DN150 – DN300 for both new and existing gravity reticulation systems.

4.5.3 (Page 63) At the end of the last paragraph, insert the following:

“Option C – Nil air space at design flow (PWWF). Shoalhaven Water allows nil air space at PWWF to be used.”

4.5.4 Table 4.3 (Page 64) For “Reticulation sewers servicing commercial and industrial lots >300m2 and other complexes where large flows may be expected”, under the Minimum size DN heading, delete 225 and replace it with 150. Below the table, insert the following:

Note 1: The maximum length of a property connection sewer is 10m however consideration may be given for junction up to 20m with a minimum size of DN150 subject to approval by Shoalhaven Water. Long junctions are not permitted to cross road reserves, railway lines, drainage reserves or other types of properties which would make maintenance onerous. Long sewer junction between 10m & 20m shall be verified by survey and detailed in WAE drawings to ensure correct grade has been achieved and shall be provided with an Easement for Drainage of Sewerage 2.4m wide in favour of Shoalhaven City Council.

4.5.5 (Page 64) Delete the first paragraph and Table 4.4 and add the following:

The maximum capacity of existing and new sewers has been based on the Colebrook-White equation for k = 0.6mm, as per the grading tables in Appendix B of this Supplement.

4.5.7.1 (Page 64) Delete the 4 paragraphs of this clause and replace with the following:

“The minimum flows and corresponding ET’s for both existing and new

systems for achieving self cleansing, have been based on the Colebrook-White equation for k = 1.5mm for 0.75 x PDWF, as per the grading tables in Appendix B of this Supplement.

4.5.7 Table 4.7 (Page 65) In the second row under the column for minimum grade, replace 1.2 with 1.65. In the last row delete EP ≤ 20 and 1% and add: “Refer to the grading tables in Appendix B of this Supplement.” 4.5.7.2 (Page 66) Delete the first paragraph and insert the following:

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Reticulation sewers shall be graded to achieve self-cleansing at 75% of PDWF.

4.6 VERTICAL ALIGNMENT OF SEWERS Add to supplement:

Sewers greater than 3m shall be concrete encased in accordance with SEW-1205SW.and/or construct in sewer specific HDPE sewer mains (SewerTech or similar) as specified by Shoalhaven Water. 4.6.2 (Page 67) At the end of paragraph (c) delete “vertical bends”

4.6.5.2 (Page 69) In point a), replace “750mm” with “900mm”. 4.6.5.2 (Page 70) In paragraph 1, delete “750mm and”. In paragraph 1, replace “150mm” with “300mm”. In point (ii), replace “3.0%” with “3.3%”. After point (ii), insert the following:

“(iii) the overflow gully is installed immediately upstream of the inspection shaft or boundary trap”.

4.6.5.4 (Page 71) In paragraphs (b), (c) and (d), references to 1.5m are to be replaced by 2.0m. 4.6.5.4 Figure 4.2 (Page 72) References to 1.5m are to be replaced by 2.0m for Case (a), (b), (c) and (d). 4.6.6.4 (Page 73) After the first paragraph, insert the following:

Internal drops shall only be used in exceptional circumstances and with the written permission of Shoalhaven Water.

4.6.7 (Page 74) Delete all paragraphs and replace with the following: Shoalhaven Water does not permit the use of Vertical Curves. 4.6.8 (Page 75) Delete all paragraphs and replace with the following: Shoalhaven Water does not permit the use of Compound Curves. 5.3.1 (Page 77) After sub-paragraph (b), insert the following:

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(c) Shoalhaven Water adopts a Buried Inspection Opening Method (Refer Standard Drawing SEW-1107SW).

5.3.3 (Page 77) Delete the existing sub-paragraph (a) and replace it with the following: Where the sewer main is within the property: The point of connection

is a buried DN150 IO installed immediately upstream from a DN150 slope junction (SJ) installed in the sewer within the customer’s property. The IO is plugged at the time of construction. Shoalhaven Water owns the IO, junction and downstream sewer. The customer is responsible for providing, connecting and maintaining an IO and sanitary drain in accordance with AS/NZS 3500.2.2.

Delete the existing sub-paragraph (b) and replace it with the following: Where the sewer main is not within the property: The point of

connection is a buried DN150 IO installed at the end of a property connection sewer terminating within the customer’s property or as approved by Shoalhaven Water. Shoalhaven Water owns the IO, property connection sewer and downstream sewer. The customer is responsible for providing, connecting and maintaining an IO and sanitary drain in accordance with AS/NZS 3500.2.2.

5.4 (Page 78) After paragraph 2, insert the following:

The maximum depth of the point of connection should not exceed 2.0m. Where the point of connection is ≥ 2.0m, they shall be manhole junctions (MHJs).

5.6.1 (Page 78) Add (d) In the case of vertical junctions the connection point shall be a minimum of 2.0m from the boundary. 5.8 (Page 79) Change bullet points (a) and (b) :

(a) 5.0m for DN 100 property connection sewers. (b) 20m for DN 150 property connection sewers (subject to Shoalhaven

Water’s approval for lines greater than 10m) 5.0m and (b) and replace with the following Junction details are to be in accordance with standard drawings SEW-

1104SW, SEW-1105SW, SEW 1107SW. 6.1 (Page 80) Delete paragraph (b) 6.3.1 Table 6.1 (Page 81) Delete the column headed “MS”

In the 6th row (ie APPLICATION: Change in sewer horizontal direction) and 4th column (ie TMS: YES for DN150 pipe only), add “Maximum 120 degrees deflection”

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6.3.2 (Page 81) In the first paragraph replace the words “maintenance structures” with maintenance holes. Delete the second paragraph and replace with the following: At the permanent end of line sewers, the distance from the end of line maintenance structure to the downstream MH shall not exceed the following:

(a) 60m when the end of line maintenance structure is a TMS, or (b) 120m when the end of line maintenance structure is a MH.

6.3.2 Figure 6.1 (Page 82) Delete Figure 6.1. 6.3.2 (Page 82) Delete the third paragraph. 6.3.2 Figure 6.2 (Page 82) Delete Figure 6.2 6.3.3 (Page 82) In the first paragraph, delete “of sizes DN 375 and greater”. Replace 180m with 120m. 6.4 (Page 82) Delete the fourth paragraph “Sewers need not terminate….Water Agency” 6.5 (Page 83) After the last paragraph, add: A new property connection sewer shall be connected by means of a junction or maintenance structure. Where the depth of the connection is deeper than 2.0m the connection shall be via a new maintenance hole (MH). (Refer Table 6.1 and Standard Drawings SEW-1107, 1108, 1316, 1501, 1502) 6.6.4 (Page 84) Add after sub-paragraph (b): “All property connection points to Maintenance Holes shall be 1.5m long measured from the centre of the MH, and shall terminate with an IO.” 6.6.5 (Page 84) In the first paragraph, delete the sentence “For shallow sewers…..Water Agency” 6.7.2 (Page 85) In bullet point (i), delete the existing note and replace it with the following:

The maximum depth shall be 2.0m

7.6.2 (Page 90) Delete the sentence:

The sewer shall be made one size larger than that determined by following the requirements of Sections 3 & 4.

7.6.2 (Page 90) After sub-paragraph (h), insert the following:

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(i) External loadings such as earth overburden, live loads, ground-water pressure.

After the second paragraph, insert the following:

Near Horizontal Boreholes under Minor Roads

1. Near horizontal bores may be installed without an encasing pipe (subject

to approval under Section 138 Requirements) but the annulus between the carrier pipe and the bore hole shall be grouted

2. the bore hole shall have a nominal diameter 100mm larger than the OD of the carrier pipe

3. the carrier pipe shall have a minimum stiffness class of SN10 or pressure rating of PN16 (whichever is applicable)

4. the carrier pipe shall be supported on skids/spacers to ensure the pipe is centrally located within the bore hole, and to prevent scoring of the pipe. The skids/spacers shall be installed so pipes cannot be pushed past the witness marks.

5. the annulus between the carrier pipe and the bore hole shall be fully grouted with an appropriate grout mix (such as Boral Concrete Batch Card No. 935705): * Cement Type SL 120kg/m3 * Flyash 150kg/m3 * Water 550L/m3 * Fluidifier (Grace DEF) 2.5kg/m3

Near Horizontal Boreholes under Driveways and In Private Property 1. Near horizontal bores may be installed without an encasing pipe and

without grouting between the carrier pipe and the bore hole 2. the bore hole shall be slightly larger than the OD of the carrier pipe to

ensure a snug fit and to minimise ground settlement 3. the carrier pipe may be PVC-U, PVC-M, PVC-O, DICL, MSCL, GRP and

shall have a minimum pressure rating of PN16 or stiffness class SN10 (whichever is applicable).

4. the carrier pipe shall be supported on skids/spacers to ensure the pipe is centrally located within the borehole, and to prevent scoring of the pipe. The skids/spacers shall be installed so pipes cannot be pushed past the witness marks.

5. No grouting is required

Despite the requirements of this policy, the installation of an encasing pipe may be required if ground conditions do not permit an unsupported bore hole. Shoalhaven Water may require grouting to occur to prevent against tree root ingress into gravity sewer mains.

7.8.2 (Page 92) After the second paragraph, insert the following:

Where an inverted syphon is required, an hydraulic grade line (HGL) analysis shall be conducted, including an appropriate reach upstream of the sewer to ensure surcharge will not occur. The HGL shall be shown on the design drawings. The design shall provide for efficient and effective

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maintenance. A comprehensive operations and maintenance manual shall be provided to Shoalhaven Water.

7.9.1 (Page 93) From sub-clause (a) delete “On incoming sewers to” and replace with the following: At At the end of sub-clause (a), add:

For sewers discharging to a pumping station wet well, requirements for provision of ERSs and emergency storage facilities shall be as required by Shoalhaven Water.

After sub-clause (b), add:

“Shoalhaven Water’s Sewerage System Licences (issued under the Protection of Environment Operations Act 1997) impose strict constraints on the location and operation of ERSs. New sewers shall be of an appropriate size and grade to contain the design flow. Where it is suspected that the receiving sewer may not have adequate capacity to contain the additional loading, Shoalhaven Water shall be consulted.”

7.10 (Page 94) Before the first paragraph, insert the following:

Flow measuring devices are generally not required to be to be designed or installed in a new sewer. Where necessary, flow measurement requirements will be specified in Shoalhaven Water’s Development Application Notice or concept design.

8.7 (Page 98) At the end of the first paragraph, insert the following:

The design shall take account of the potential for exposure of pipes and supporting structures to bushfire.

After the second paragraph, insert the following: The Designer shall liaise with the Asset Owner and/or Roads Authority and

shall obtain written approval for the design of the Above Ground Crossing prior to obtaining design approval from Shoalhaven Water.

8.10 (Page 99) After the first paragraph, add a new paragraph as follows:

Trench stops shall be installed at the following spacing (S): Grades of 2.5 -15% in OTR, S = 30/Grade (%) Grades of 1.5 -15% in Rock, S = 20/Grade (%)

. 9.2.1 (Page 100) After the first paragraph, insert the following:

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Shoalhaven Water’s Design Drawing Requirements are shown in Appendix C of this Supplement.

9.2.3 (Page 101) Delete sub-clause (g) and replace with the following:

Junction type (SJ for slope junctions, RJ for riley junctions or VJ for vertical junctions), junction distance from downstream manhole, junction length and junction depth (from design surface level) shall be shown.

Delete sub-clause (h). 9.2.4 (Page 101) In sub-clause (h), replace “ISG” with GDA and delete “if available”. 9.2.5 (Page 102) In sub-clause (i), before “Concrete surrounds”, insert the following:

Trench stops,

9.2.6 (Page 102) In sub-clause (c) after “Project Manager” insert the following:

or Supervising Consultant. After sub-clause (i) insert an additional sub-clause:

(j) Council’s Development Application Number or Subdivision Number (and the stage of the subdivision if staged).

After sub-clause (j) insert an additional sub-clause:

(k) Name of Project 9.3.1 (Page 103) In the first sentence delete 1:1000 and replace with 1:500. 9.3.2 (Page 103) After the first paragraph, add:

Work-as-constructed drawings shall be in accordance with Shoalhaven Water Standard Technical Specifications for WORK-AS-EXECUTED (WAE) INFORMATION (D13/45490). Drawings shall be a copy of the approved design drawings with variations to the design marked in RED. The level of each point of connection (ie of the junction or, as appropriate, the riser) and junction type (ie slope junction SJ, riley junction RJ or vertical junction VJ) shall be clearly shown on the design drawings and recorded on the work-as-constructed drawings.

APPENDIX A (Page 104) ESTIMATION OF EQUIVALENT POPULATION (EP) shall not be used. Please refer to Appendix A of this Supplement for a determination of Equivalent Tenements (ET’s)

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APPENDIX B (Page 110) FLOW ESTIMATION OF UNDEVELOPED AREAS shall not be used. Insert Appendix A: Determination of Equivalent Tenements (ET’s) of this Supplement, following this Section of the Supplement. Insert Appendix B: Sewer Grading Tables for Existing and New Gravity Sewer Reticulation Systems of this Supplement, following this Section of the Supplement.

Insert Appendix C: Shoalhaven Water’s Design Drawing Requirements of this Supplement, following this Section of the Supplement.

APPENDIX A – EQUIVALENT TENEMENT (ET) DETERMINATION

ITEM DESCRIPTION NOTE UNIT ET’s

Subdivided Lots Each subdivided lot with separate connection (excluding dual occupancy subdivision)

per Lot 1.00

Residential Development Only -Community Title/Neighbourhood Title/Strata Title (where development approval for the dwellings granted)

1 Bedroom 0.40 2 Bedroom 0.60 3 Bedroom 0.80 4 Bedroom 1.00

Residential Development Only -Community Title/Neighbourhood Title/Strata Title (where development approval for the dwellings NOT approved) – LAND SIZE

≤200m2 0.40

>200m2 &

≤300m2

0.60

>300m2 &

≤450m2

0.80

>450m2 1.00

Residential Single House on single lot per house 1.00

Residential Development

Flats & Medium Density Development, Dual Occupancy & “Granny Flat”

VI 1 Bedroom 0.40 2 Bedroom 0.60 3 Bedroom 0.80 4 Bedroom 1.00

Caravan Parks per licensed site – tent sites & mobile caravan sites (excluding

I, III Short Term Site 0.15

Manager’s Residence) Long Term Site 0.30

per licensed site – Cabin/mobile I, III 1 Bedroom 0.25

home (short or long term sites) 2 Bedroom 0.40

(excluding Manager’s Residence) 3 Bedroom 0.60

Retirement Villages

Nursing Homes and Hostel Single occupant - No separate kitchen facilities - Occupants require support

includes other supporting facilities

- Excludes Manager’s residence

I per single bed

0.25

Self-Care 1 Bedroom 0.40 2 Bedroom 0.60 3 Bedroom 0.60 4 Bedroom 0.80

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Motels/Hotels/ Resorts

- Excludes Manager’s residence I 1 Bedroom 0.20

- Excludes restaurants, clubs, reception centres, etc (see commercial wet trade or licensed premises or other commercial activities (refer to appropriate item/description)

2 Bedroom 0.40

3 Bedroom or greater

0.60

Backpacker Accommodation/Hostel

- Communal cooking facilities - Small communal laundry

per bed 0.125

Bed-sitter / Guest House

No cooking - ensuite facilities available

per Bedroom 0.20

House based with communal kitchen/laundry

1 Bedroom 0.25 2 Bedroom 0.40 3 Bedroom 0.60

Bed & Breakfast Accommodation (New) per bedroom 0.25

Accommodation (Amendment to existing building with no building additions)

per bedroom in excess of 4 bedrooms (or possible bedrooms)

0.25

Industrial Large open building which may/are further developed (divided) and where future use is unknown.

II, V per 1,000m2

gross floor area 1.00

Offices Commercial Activity V per 250m2


Commercial Development

General Merchandise Type Shops (excludes Commercial Dry Trade & Commercial Wet Trade)

V per 250m2


Commercial: Multi-Premise Development

Milt-premise commercial development (allowance made for small commercial wet trade)

V, IX Per 210m2


Commercial Dry Trade

Bulky Goods Type Shops (excluding food and wet trade), Museum, Showroom, Galleries, etc – water used only for domestic purposes (other than in or part of shopping complexes)

V per 500m2


Commercial Wet Trade

Shops – Food preparation and sales and where water is used for business activity other than domestic purposes (unless otherwise stated) eg., café, butcher, milk bar, bakery, fish shop, restaurant

V per 100m2


Shopping Complex/Retail Super Store

Food Preparation (eg., café, butcher), Shops and Offices (for Supermarket refer below)

per 210m2


Supermarket

Food Preparation per 100m2


Offices per 250m2


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Supermarket (customer area) per 1,000m2


Licensed Premises

Clubs, Restaurants, Reception Centres, etc.

per 100m2


Hospital per bed 1.00

School Day per 25 pupils 1.00

Boarding per 6 pupils 1.00

Child Minding Facilities

Day Care (short and long) VIII Water (per person)

0.06

VIII Sewer (per person)

0.10

Theatres, Churches

per 100 occupants

1.00

Sporting Complex

Potential maximum number of persons (for seating 1 person per 500 mm wide)

per 100 persons

1.00

Animal Boarding Dogs, Cats, etc Per 500m2 floor

area (including the play area)

1.00

Green Trade,

Nursery, Sporting Fields (eg. Oval/fields/bowling greens for irrigation purposes with no stand or amenities block/s), Parks, Gardens, Market gardens (excluding primary residence)/Garden Centres/ Nurseries. Meter sizes larger than 50mm subject to written application.

X To be individually assessed or in accordance with Water Directorate “Section 64 Determinations of Equivalent Tenements Guidelines”, or specific Council resolution.

To be determined on application

Public Amenity Blocks

Public facilities Per fixture (eg WC, shower)

0.50

Commercial Laundry

Laundrette, etc To be individually assessed or in accordance with Water Directorate “Section 64 Determinations of Equivalent Tenements Guidelines”, or specific Council resolution.


Other developments not specified:

To be individually assessed or in accordance with specific Council resolution or Water Directorate “Section 64 Determinations of Equivalent Tenements Guidelines”.


NOTES: ET – Equivalent Tenement

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I Manager’s residence to be based on number of bedrooms (see Residential

Development) II Area of Portal frame (Industrial) building to be determined by measuring to

external cladding. III Caravan Parks: Short Term Site - includes camping site, caravan sites – as per licence approval Long Term Site - includes caravan sites, mobile home sites, and cabins – as per

licence approval

IV Deleted by MIN13.864 V With commercial and industrial business, Section 64 (Headworks)

contributions are to be calculated in accordance with Council’s policy – Water and Sewerage Headworks Charges (Section 64 Contributions) – Assistance for Small Business.

VI Medium Density and Residential Flat Developments – ET’s are set by Council

Resolution 93/2899 – resolved at Council meeting on 16 Nov 1993.

93/2899 Developer Charges for Water Supply and Sewerage - Medium Density and Residential Flat Development Files 90/2499, 90/2500 + RECOMMENDED that, for the proposal of calculating developer contributions for water supply and sewerage, the following 'equivalent tenement' (E.T.) factors be used in respect of medium density and residential flat development:- + Small residential flat or unit - 1 bedroom = 0.4 E.T.

Medium residential flat or unit - 2 bedrooms = 0.6 E.T. Large residential flat or unit - 3 bedrooms = 0.8 E.T. + and that rooms capable of being used as separate bedrooms be included in the number of bedrooms.

VIII As per Water Directorate “Section 64 Determinations of Equivalent

Tenements Guidelines”. Persons include children and staff. IX As per Council report and resolution (Minute No. 06/184), February 2006.

184. Section 64 Contributions – ‘First Occupancy’ or ‘Change of Use’ of Commercial Buildings File 15513

RECOMMENDED that Council levy a Section 64 contribution charge for commercial small shopping complexes at the initial DA stage to cover ‘first occupancy’ or ‘change of use’ where impact is minor on the water and/or sewerage systems, as follows: a) The rate of one (1) equivalent tenement (ET) for a proposed or existing multi

premise commercial development on commercial zoned land shall be per 210m2

of gross floor area; and b) A business which occupies one of the premises (as a first occupancy or a change of use) may be granted a concession towards payment of water and sewer developer charges if:

i) it is less than 100m2

; ii) its calculated loading on a system is less than or equal to 1.0 ET;

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iii) it is not a large water user or sewer discharger (eg. commercial laundries, or licensed premises, etc.); c) A development/business which occupies one of the premises (as a first occupancy or a change of use) and is determined as having a loading on a system that is greater than 1.0 ET, then the development/business shall pay water and sewer developer charges as follows: Net ET’s = development /business loading in ET’s – credit for area occupied at rate of

1ET/210m2

. d) The above rate and calculations be included in the Annual Management Plan.

X Fairways on golf courses are not provided with town water supply for irrigation

purposes.

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APPENDIX B - SHEET 1

GRADING TABLES FOR EXISTING SEWER GRAVITY SYSTEMS

ADWF = 0.0083L/sec/ET (180L/day/ET, 4EP = 1ET), SA = 0.058L/sec/ET

Pipe Size 150 225 300

Grade k (mm) k (mm) k (mm)

0.6 1.5 0.6 1.5 0.6 1.5

% 1 in

Max Q Max ET Min Q Min ET Max Q Max ET Min Q Min ET Max Q Max ET Min Q Min ET

1.667 60 22.95 284 0.24 1

1.429 70 21.23 262 0.26 2

1.250 80 19.84 244 0.32 4 58.09 746 0.42 9 124.19 1637 0.53 16

1.111 90 18.69 229 0.39 8 54.74 702 0.50 14 117.03 1539 0.63 22

1.000 100 17.72 216 0.46 12 51.90 664 0.59 19 110.98 1457 0.72 28

0.909 110 16.89 206 0.55 17 49.46 632 0.68 25 105.77 1387 0.83 34

0.833 120 16.16 197 0.64 23 47.33 603 0.78 31 101.22 1325 0.94 40

0.769 130 15.51 188 0.74 30 45.45 579 0.89 37 97.21 1271 1.06 46

0.714 140 14.94 181 0.86 35 43.78 556 1.01 43 93.64 1223 1.19 53

0.667 150 14.43 175 0.98 42 42.28 537 1.13 49 90.43 1180 1.33 60

0.625 160 13.96 169 1.12 49 40.92 519 1.27 57 87.53 1141 1.47 68

0.588 170 13.54 163 1.27 57 39.68 502 1.41 64 84.89 1105 1.62 76

0.556 180 13.15 158 1.45 67 38.55 487 1.56 73 82.47 1073 1.78 86

0.526 190 37.50 474 1.72 82 80.24 1043 1.95 95

0.500 200 36.54 461 1.90 92 78.19 1015 2.13 106

0.476 210

35.65 449 2.08 103 76.28 990 2.31 117

0.455 220

34.82 438 2.28 115 74.50 966 2.51 129

0.435 230 34.04 428 2.49 128 72.84 943 2.71 142

0.417 240

33.31 419 2.72 142 71.29 923 2.93 155

0.400 250

32.63 410 2.96 157 69.83 903 3.15 170

0.333 300 29.74 372 4.52 260 63.66 821 4.46 256

0.286 350

58.87 757 6.16 374

0.250 400 55.01 705 8.43 541

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APPENDIX B - SHEET 2

GRADING TABLES FOR NEW GRAVITY SEWER SYSTEMS

ADWF = 0.0083L/sec/ET (180L/day/EP, 4EP = 1ET), SA = 0.03L/sec/ET

Pipe Size 150 225 300

Grade k (mm) k (mm) k (mm)

0.6 1.5 0.6 1.5 0.6 1.5

% 1 in

Max Q Max ET Min Q Min ET Max Q Max ET Min Q Min ET Max Q Max ET Min Q Min ET

1.667 60 22.95 447 0.24 1

1.429 70 21.23 411 0.26 2

1.250 80 19.84 383 0.32 4 58.09 1195 0.42 9 124.19 2649 0.53 16

1.111 90 18.69 359 0.39 7 54.74 1132 0.50 14 117.03 2507 0.63 22

1.000 100 17.72 339 0.46 12 51.90 1071 0.59 19 110.98 2373 0.72 28

0.909 110 16.89 322 0.55 17 49.46 1019 0.68 25 105.77 2258 0.83 34

0.833 120 16.16 307 0.64 23 47.33 973 0.78 31 101.22 2158 0.94 40

0.769 130 15.51 294 0.74 29 45.45 933 0.89 37 97.21 2070 1.06 46

0.714 140 14.94 283 0.86 35 43.78 897 1.01 43 93.64 1991 1.19 53

0.667 150 14.43 272 0.98 42 42.28 865 1.13 49 90.43 1920 1.33 60

0.625 160 13.96 263 1.12 49 40.92 836 1.27 57 87.53 1857 1.47 68

0.588 170 13.54 254 1.27 57 39.68 810 1.41 64 84.89 1799 1.62 76

0.556 180 13.15 246 1.45 67 38.55 786 1.56 73 82.47 1746 1.78 86

0.526 190 37.50 764 1.72 82 80.24 1697 1.95 95

0.500 200 36.54 743 1.90 92 78.19 1652 2.13 106

0.476 210

35.65 724 2.08 103 76.28 1610 2.31 117

0.455 220

34.82 707 2.28 115 74.50 1572 2.51 129

0.435 230 34.04 708 2.49 128 72.84 1535 2.71 142

0.417 240

33.31 709 2.72 142 71.29 1502 2.93 155

0.400 250

32.63 661 2.96 157 69.83 1470 3.15 170

0.333 300

29.74 600 4.52 260 63.66 1336 4.46 256

0.286 350

58.87 1232 6.16 374

0.250 400 55.01 1148 8.43 541

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APPENDIX C – SHOALHAVEN WATER REQUIREMENTS FOR SEWER DESIGN DRAWINGS

PLANS (to be read in conjunction with Drawing SEW-1100SW)

Plans are to be prepared on sheets sizes no greater than A1 and no smaller than A3, and shall have sheet borders.

Plans are to be drawn at a scale of 1:500 unless greater detail needs to be shown in which case a scale of 1:250 may be used.

Generally plans are to clearly elaborate the extent of works to be undertaken and are to be free of any superfluous information.

Lots proposed to be serviced are to be shown in their entirety.

Boundaries of lots to be serviced in the plan are to be highlighted by bold lines and numbering.

All lots shown on the plan are to be properly numbered.

Adjoining lot information (Lot and DP No.s) is to be shown on the plan in stippled lettering.

Contours at a minimum 0.5m interval are to shown over the entire area of the lots to be serviced and major contour values clearly shown.

In general the plan is to clearly show the works to be undertaken with all other information in thinner, smaller or fainter line types to avoid confusion.(Internal sewer drainage lines are not to be shown or to be identified as not part of approval)

Contours and levels shown are to be on Australian Height Datum (AHD).

Bench Marks showing levels on AHD are to be shown on the plan – minimum spacing for benchmarks is to be 200m.

North point to be shown on plans – should be to the top of page or to the right of the page.

Proposed roads showing kerb lines (or if applicable edge of bitumen) and existing/proposed stormwater drainage systems (including interallotment drainage lines) are to be shown on the plan. Thin or light lines are to be used for this additional information.

Existing and proposed (if known) street names are to be shown on the plan

Proposed sewer lines are generally to be located within property boundaries with consideration given to the possible impact of the sewer lines and structures to future building sites. Where possible zones of influence (as defined in Council’s Building Over Sewers Policy) should not extend into building area.

In cases where sewer lines are to run up the side of properties, these lines shall be concrete encased. Encasing is to be shown commencing a minimum 1.0m outside the building line and extend a minimum 75% of the depth of the building area.

Proposed sewer lines are to be shown with bearings and distances on each line (distances measured from centre of structures)

All structures (i.e. Maintenance holes, Terminal Maintenance Shafts) are to be clearly numbered commencing from the downstream end and numbered progressively to the end of the line. Numbering is to be kept simple e.g. A/1, A/2 etc. and the used of complex manhole number e.g. XAC1/3 avoided.

All structures are to be clearly dimensioned in relation to existing or proposed boundaries, sufficient to enable proper setting out by survey. Where dimensioning not possible or unworkable MGA co-ordinates may be shown for all sewer structures.

All sewer junctions are to be clearly shown and noted as to their type i.e. slope junction (SJ), riley junction (RJ), or vertical junction (VJ), with the chainage of the junction shown from the centre downstream manhole/structure. NB –Lots where sewer mains are located outside lot to be served, shall be serviced by riley junction and lots with sewer located inside lot shall be serviced by slope junction (excludes VJ, MHJ & junction extending from terminal maintenance shafts).

A table is to be included on the plan which details the fall at the centre of the maintenance holes and corresponding minimum required fall across the maintenance hole giving consideration to grade.

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All new sewer mains are to drawn as thick unbroken lines and maintenance holes, terminal maintenance shafts etc. drawn as shown on the attached plan.

LONGITUDINAL SECTIONS (to be read in conjunction with Drawing SEW-1101SW)

Longitudinal sections are to be prepared at a standard scale of 1:500 horizontal and 1:100 vertical unless greater detail needs to be shown in which case a horizontal scale of 1:250 may be used.

Sections are to commence with the downstream maintenance hole on the left hand side of the page.

Sections are to show lengths of lines, natural surface (and design surface where applicable), invert levels (inlet and outlet) at centre of proposed and existing maintenance holes or structures and depth of line at structures from natural and design surface to inverts and any stormwater or water main crossings.

Sections are to show a datum line (in bold) with level clearly denoted.

Levels are to be shown to an accuracy of no greater than 0.005.

Structures are to be clearly numbered with numbering coinciding with that shown on the plan.

Grades of sewer lines are to be clearly shown both in percentage and ratio ie. 1:XX (to a maximum of 2 decimal places)

Grades of proposed lines are to be no flatter than the minimum grades as defined in Council current design guidelines. Where possible absolute minimum grades are to be avoided, but if design constraints dictate the use of minimum grades, a note is to be added to the long section indicating this and stating the requirement for lines to be checked by survey prior to backfilling to ensure design requirements have been met.

Size and type of sewer pipe to be shown.

The concrete encasing of sewer lines is to be clearly shown on the long section together with start and finish chainages.

Details of vertical junctions showing height of junction riser above the main is to be shown on the long section.

The general description of property type in which the sewer line is to run should be shown along the top of the section i.e. private, public reserve, road, etc.

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5.0 VARIATIONS TO PART 2 OF THE CODE: PRODUCTS AND MATERIALS

10.3.1 (Page 123) After sub-clause (b), add: Shoalhaven Water’s accepted product list and any variations to the Purchase Specifications are outlined in Section 10.8. 10.8 PRODUCTS APPROVED BY SHOALHAVEN WATER At the end of clause 10.7, add a new clause 10.8 as follows: This part outlines the main stream of products approved for use in Shoalhaven Water’s gravity sewerage network. If there are any variations to the default purchase specification these will also be listed. The following list generally follows the order found in the document “Product & Material Information & Guidance” which can be found on the WSAA website at www.wsaa.asn.au Alternative materials not listed below will be considered on a case-by-case basis, and shall be shown on the design drawings. 10.8.1 Unplasticised Polyvinyl Chloride (PVC-U) Gravity Sewers Approved for use. Variations to Purchase Specification WSA PS-230: Ribbed and sandwich wall construction will not be accepted. Solvent cement joints will only be accepted where shown on the standard drawings. 10.8.2 Vitrified Clay Gravity Sewers Not approved for use. 10.8.3 Ductile Iron Gravity Sewers Approved for use. Variations to Purchase Specification WSA PS-234: Nil 10.8.4 Centrifugally Cast Glass Reinforced Plastic (CC-GRP) Gravity Sewers Not approved for use. 10.8.5 Polyethylene (PE) Gravity Sewers Approved for use in near horizontal borehole applications and other applications. Variations to Purchase Specification WSA PS-207: Nil

http://www.wsaa.asn.au/

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10.8.5 Maintenance Holes Approved for use. Variations to Purchase Specification WSA PS-323: Precast MH bases will not be permitted. Elastomeric joint seals will not be permitted. 10.8.5 Maintenance Shafts Not approved for use. 10.8.6 Variable Bend, Post-Formed PVC Non Pressure Fittings Not approved for use. 10.8.7 Ladders and Step Irons Plastic Encapsulated Step Irons approved for use. Variations to Purchase Specification WSA PS-314: Nil Ladders are generally NOT required in Shoalhaven Water Gravity Sewer systems.

10.8.8 Ventshafts Ventshafts approved for use. Variations to Purchase Specification WSA PS-291 & 292: Nil. Water Agency requirements are for Duraduct in accordance with Standard Drawing (SEW-1451-SW) or equivalent ventshafts.

10.8.9 Surface Fittings Surface fittings approved for use. Variations to Purchase Specification WSA PS-290: Class B MH covers shall comply with AS 4198-1994: Precast Concrete Access Chambers for Sewerage Applications Class D MH covers shall comply with the requirements of WSA PS-290. 10.8.10 Jointing Components Jointing components approved for use. Variations to Purchase Specifications: Nil 10.8.11 Corrosion Protection Corrosion protection approved for use. Variations to Purchase Specification WSA PS-370: Nil 10.8.12 Pipe Embedment Materials Pipe embedment materials approved for use.

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Compaction sand complying with WSA PS-350 and single sized aggregate of nominal sizes 7, 10 or 14 complying with WSA PS-351 will be accepted for pipe embedment materials Variations to Purchase Specification WSA PS-350: Nil Variations to Purchase Specification WSA PS-351: Nil

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6.0 VARIATIONS TO PART 3 OF THE CODE: CONSTRUCTION

11.2 (Page 153) At the end of the definition of “Purchase Specifications” add the following: Purchase Specifications include any variations as described in this

Supplement. At the end of the definition of “Standard Drawings” add the following: Standard Drawings includes any variations and additional drawings as

described in this Supplement.

12.1 (Page 155) After the first paragraph insert the following: The requirements of this section are seen as good management practices

and Contractors are advised they should endeavour to achieve compliance with these requirements. Shoalhaven Water may, in future, specify full or partial compliance with these requirements as a pre-condition of constructing wastewater infrastructure. If required, Contract Documents will specify some or all of these requirements.

13.2 (Page 158) After sub-clause (e), insert the following: Note: Record Work-as-Constructed details as work proceeds.

Shoalhaven Water may require a Work Method Statement to be prepared if an interruption to normal services is anticipated, or if Shoalhaven Water’s workforce will be involved in construction activities.

13.4.1 (Page 158) After the first paragraph, insert the following: All references to the Water Authority’s “Requirements for Customer Service”

shall be read as Shoalhaven Water’s “Levels of Customer Service” document. 13.5.1 (Page 159) Delete the second last paragraph and insert: Adhere at all times to the OH&S requirements of WorkCover. 13.5.4 (Page 160) Insert the following:

Prior to any works being undertaken in the road reserve, approval in accordance with Section 138 of the Roads Act 1993 shall be obtained from Council’s Strategic Planning Group.

13.5.5 (Page 161) After subclause (g), insert: the following:

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It is strongly suggested that a detailed video and/or photographic record is made of all damage and defects to improvements in the vicinity of the works, particularly on private property, prior to construction activities commencing. This record should cover, but is not limited to buildings, roads, pavements, reserves, kerb & gutter, vegetation, drains, pits etc.

13.5.6 (Page 161) Insert the following:

Prepare and/or comply with Environmental Management procedures necessary to address issues raised in the project REF/EIS, design plans and project specification.

13.5.6.3 (Page 162) After the fourth paragraph, insert the following:

Council’s Tree Management Policy shall be adhered to at all times. 14.5.10 (Page 167) At the end of clause 14.5.10 add a new clause 14.5.11 as follows: 14.5.11 Backfilling Over Concrete Encased Sewer Mains

Backfilling of concrete encased sewer mains shall not occur within 24 hours of pouring concrete unless specifically noted and approved in writing by Shoalhaven Water.

14.6 (Page 168) After the third paragraph, insert the following:

If water is to be drawn from Shoalhaven Water’s mains, a metered standpipe shall be hired from Shoalhaven Water. The appropriate method shall be followed to prevent sediment from being stirred up.

15.1 (Page 169) Before the first paragraph, insert the following: Comply with the Code of Practice for Excavation, issued by Workcover.

http://www.workcover.nsw.gov.au/FORMSPUBLICATIONS/Pages/default.aspx?Category=Legislation&SubCategory=Codes+of+Practice&Keyword=excavation

15.4 (Page 169) Before the first paragraph, insert the following:

All excavation in tree root zones shall be in accordance with Council’s Tree Management Policy.

15.5 (Page 169) After the second paragraph, insert the following:

The Superintendent shall ensure that the Contractor has the appropriate insurances to carry out blasting.




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15.9 (Page 170) Delete the following line:

Surplus material is the property of the Owner of the excavation site.

16.2 (Page 171) After the words “Use specified bedding materials.” Insert the following: Which shall be bedding sand or coarse aggregate (the latter only as approved

by Shoalhaven Water) and as outlined in Section 10.8.12 of Section 2 Product & Materials

17.2.2 Table 17.1 (Page 173) This clause is to be deleted. 17.2.3 (Page 174) Delete the entire clause. 17.2.4 (Page 174) Delete the entire clause. 17.2.5 (Page 174) Delete the entire clause. 17.15 (Page 176) Delete the entire clause. 18.2 (Page 179) After the 4th paragraph, add the following paragraph:

Pre-cast manhole bases will not be permitted.

19 (Page 182) Delete all references to MSs. 22.4.4.1 (Page 194) Delete the first and second paragraph and TABLE 22.5 (page 195), and replace with: Test all MHs. 22.7 (Page 197) In the first paragraph delete “specified” and replace it with “all”. In bullet point (c), after “Provide the CCTV records to the Superintendent as specified.” insert the following: CCTV records shall include the items as listed under Clause 2.6.1 of WSA

05-2008 Conduit Inspection Reporting Code of Australia V2.2 and in accordance with Shoalhaven Water’s Guidelines To CCTV Inspection – New works D13/220308 . The Operator’s report shall be supplied in electronic format written in accordance with Appendix B of WSA 05 and burnt on a CD.

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23.2.1 (Page 202) After the first paragraph insert the following: For lines designed at minimum grade, vertical tolerances will be 0mm. 23.2.3 (Page 202) After the first paragraph insert the following: The requirements of Table 23.1 shall apply, but grades less than those

required to provide self-cleansing flows in accordance with Appendix B Grading Tables of this Supplement.

23.2.3 TABLE 23.2 (Page 203) For “DN150” under the Design grade heading, delete “1.2% (1 in 83)” and replace with “1.65% (1 in 60)”. For “DN150” under the Minimum acceptable grade heading, delete “15% flatter” and replace with “0% flatter”. 24 (Page 204) After the third paragraph, insert the following: A work method statement for connecting to the existing system shall be

submitted to Shoalhaven Water for approval prior to the commencement of works.

In the fourth paragraph, delete “and environmental Regulator”. 26 (Page 207) During the progress of the work, record as-constructed details in the same format as the design drawings. On completion of the work provide the records to the Designer and assist, as appropriate with the preparation of Work-as-Constructed drawings. Keep a copy of records. Refer to Shoalhaven Water’s Standard Technical Specification for WORK-AS-EXECUTED (WAE) INFORMATION (D13/45490) & Shoalhaven Water’s Standard Drawing SEW-1110SW requirements for presentation of Work-As-Executed drawings.. Works-As-Executed Drawings are to be a copy of the Approved Design Drawings with Works-As-Executed marked in RED where Works-As-Executed vary from the Approved Design Drawings. Insert Appendix D: Shoalhaven Water’s Standard Technical Specification for WORK-AS-EXECUTED (WAE) INFORMATION (D13/45490) & Shoalhaven Water’s Standard Drawing SEW-1110SW of this Supplement, following this Section of the Supplement.

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Variations to Part 4 of the Code: Standard Drawings 29.3 (Page 216) Delete the second paragraph and replace with “Sewers shall be laid such that the socket end of pipes face upstream.” 29.5 TABLE 29.1 (Page 217) In the third column, replace the words “commercial buildings” with “As directed by Shoalhaven Water” 29.5.1 (Page 217) In the first sentence of the second paragraph, replace the words “public property” with the words “in either public or private property” STANDARD DRAWINGS Where information on a drawing refers to a standard drawing not use designer shall refer to same drawing number with SW after the number. E.g., in SEW1300 reference is made to SEW1307, however this drawing is not used, then the designer shall refer to SEW1307SW. SEW-1100 Design Layouts – Typical Locality and Site Plan Not Used USE SEW-1100SW Example of Sewer Design Plan Layout Property Connection Sewer Details to be shown ie Junction type (SJ, RJ, MHJ, or VJ), distance from the downstream maintenance hole, depth to junction from FSL and junction length in lieu of the arrow. Contours shall be sufficient to demonstrate lot can be serviced. (Normally 0.5m intervals). SEW-1101 Design Layouts - Longitudinal Sections - Not Used USE SEW-1101SW SEW-1102 Design Layouts – Connection to Existing Sewer Schedule of Works - Not Used SEW-1103 Pipelaying-Typical Arrangements - Not Used USE SEW-1103SW Reference to SEW-1106 removed. Use of MSs is not permitted SEW-1104 Property Connection Details - Sewer in Road Reserve - Not Used USE - SEW-1104SW Property Connection Details - Long Sewer Junctions Buried Inspection Opening Interface Method used. SEW-1105 Property Connection Details – Sewer in Easements & Inside Property - Not Used USE SEW-1105SW Property Connection Details - Short Sewer Junctions Buried Inspection Opening Interface Method used. SEW-1106 Property Connection Details - IO Interface Method - Not Used

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SEW-1107 Property Connection Details - Buried Interface Method - Not Used USE SEW-1107SW Property Connection Details- Buried Inspection Opening Interface Method SEW-1108 Property Connection Details-“Y” Branch & Around Obstructions USE SEW-1108SW Property Connection Details Around Obstructions “Y” Branch Property Connection Sewer – Not Used. Standard Branch around an Obstruction. Minimum Clearance Specified & Concrete Encasement of Bend. SEW-1109 Property Connection Details Private Property Connection Details & Marking Systems Connection to Deep Sewers in Private Property – Not used. Refer SEW-1107SW. SEW-1200 Soil Classification Guidelines and Allowable bearing Pressures for Bulkheads – USE (Unchanged) SEW-1201 Embedment and Trenchfill-Typical Arrangement - Not Used USE SEW-1201SW - Embedment and Trenchfill-Typical Arrangement Minor amendments to Spring Line Trench Clearance SEW-1202 Standard Embedment-Flexible & Rigid pipes - USE (Unchanged) Note re use of Geotextile fabric to be as directed by Shoalhaven Water for Type 4 Support. SEW-1203 Special Embedment-Inadequate Foundations Requiring over Excavation & Replacement - USE (Unchanged) Note re use of Geotextile fabric to be as directed by Shoalhaven Water for Type 7 Support. SEW-1204 Special Embedment-Support Utilising Piles - USE (Unchanged) Note re use of Geotextile fabric as directed by Shoalhaven Water for Type 9 and 11 Supports. SEW-1205 Special Embedment-Concrete & Stabilised Supports – Not Used USE SEW-1205SW Special Embedment-Concrete & Stabilised Supports Dowel Pins Removed from Concrete Encasement Joint Details SEW-1206 Trench Drainage-Bulkheads & Trenchstop – Not Used USE SEW-1206SW Trench Drainage-Bulkheads & Trenchstop Typical Road Crossing Bulkhead Removed SEW-1207 Trench Drainage-Typical Drainage – USE (Unchanged) Notes re use of Geotextile fabric as directed by Shoalhaven Water. SEW-1208 Verticals & Near Verticals-Exposed & Concealed Methods – USE (Unchanged) SEW-1300 Maintenance Holes-Sewers ≤ DN 300 Precast Types P1 & P2 – Not Used USE SEW-1300SW Maintenance Holes-Sewers ≤ DN 300 Precast Types P1 & P2 – Concrete Class SW32 Specification Added

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SEW-1301 Maintenance Holes-Sewers ≤ DN 300 Cast-in-Situ Types C1 & C2 – USE (Unchanged) SEW-1302 Maintenance Holes-Pipe Connection Details – Not Used USE SEW-1302SW Maintenance Holes-Pipe Connection Details Sanded 600 Shorts added. MH Base with Solvent Cement PVC Sewers Removed. SEW-1303 Maintenance Holes-Sewers ≤ DN 300 Changes in Level Details – Not Used USE SEW-1303SW Maintenance Holes-Sewers ≤ DN 300 Changes in Level Details For Straight -Through Sewer, Change in Direction and outlet from Precast MH, Refer SEW-1302SW. SEW-1304 Maintenance Holes-Sewers ≤ DN 300 Typical Channel Arrangements – USE (Unchanged) SEW-1305 Maintenance Holes-Sewers ≤ DN 300 Typical Channel Details - USE (Unchanged) SEW-1306 Maintenance Holes-Alternative Drop Connections – Not Used USE SEW-1306SW Maintenance Holes-Alternative Drop Connections Typical Drop Chamber Removed. Standard PVC MH Drop Bend replaced with 90°Bend or Tee. SEW1307 Maintenance Holes-Step Irons & Ladders – Not Used USE SEW1307SW Maintenance Holes-Step Irons & Ladders Standard Ladder & Monorail Ladder Details Removed SEW-1308 Maintenance Holes-Typical MH Cover Arrangements – Not Used USE SEW-1308SW Maintenance Holes-Typical MH Cover Arrangements Note 6 shall read: “Covers maybe metal, metal with concrete infill or concrete. Add Note 8: “MH converter to be used only as directed by Shoalhaven Water”. SEW-1309 Maintenance Holes-Sewers DN 375 to DN 750 – USE (Unchanged) SEW-1310 Maintenance Holes-Permanent Formwork ≥ DN 375 – USE (Unchanged) SEW-1311 Maintenance Holes-Depth to Invert 6m to 15m - Not Used SEW-1312 Maintenance Holes-Depth to Invert > 15m - Not Used SEW-1313 Maintenance Holes-Connection Details DN 110 to DN 450 PE Pipe – USE (Unchanged) SEW-1314 Maintenance Shafts-Typical Installation - Not Used SEW-1315 Maintenance Shafts-MS & Variable Bend Installations - Not Used SEW-1316 Maintenance Shafts-TMS & Connection Installations - Not Used USE SEW-1318SW Maintenance Shafts-TMS & Connection Installations

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Remove the Elevation detail showing Terminal Maintenance Shaft with Property Connection Ahead. Remove the DN150 Reticulation Inlet detail. Covers to TMSs to be precast concrete (refer SEW-1317SW) located inside a concrete surround ring or approved alternative laid over the PVC shroud pipe. Modify Note 3: Exclude from last line “1 reticulation inlet or”. Add Note 5: “Use embedment material around riser shaft as used for pipe embedment”. Add Note 6: “Place embedment material around riser shaft in shallow layers to avoid unbalanced loads”. SEW-1317 Maintenance Shafts - Typical MS Cover Arrangements - Not Used Use SEW-1317SW Maintenance Shafts-Typical MS Cover Arrangements Non Trafficable Covers to TMSs to be precast concrete located inside a concrete surround ring or approved alternative. SEW-1400 Buried Crossings-Syphon Arrangement - Not Used SEW-1401 Buried Crossings-Railways - Use (Unchanged) SEW-1402 Buried Crossings-Major Railways - Use (Unchanged) SEW-1403 Buried Crossings-Bored & Jack Encasing Pipe details - Use (Unchanged) SEW-1404 Aerial Crossings-Aqueduct – Use (Unchanged) SEW-1405 Aerial Crossings-Aqueduct Protection Grille - Use (Unchanged) SEW-1406 Aerial Crossings-Bridge Crossing Concepts - Use (Unchanged) SEW-1407 Ventilation Systems-Induct Vent - Use (Unchanged) SEW-1408 Ventilation Systems-Educt Vent - Not Used. Refer SEW-1451-S SEW-1409 Water Seal Arrangements-Mains Type - Not Used SEW-1410 Water Seal Arrangements-Maintenance Hole System PVC Screw Cap used as plug SEW-1411 Water Seal Arrangements-Twin Maintenance Hole System - Not Used SEW-1412 Emergency Relief Structures-Typical Arrangement DN150 to DN375 - Not Used Use SEW-1451-S Ventilation Systems Educt Ventshaft Base Block Details SEW-1500 Insertions & Repair Systems-Cut in Methods – Use (Unchanged) SEW-1501 Insertions & Repair Systems-Insertion of Junctions - Use (Unchanged) SEW-1502 Insertions & Repair Systems-Maintenance Structures – Use (Unchanged)