Agenda of Water, Waste and Sewer Advisory Committee Meeting

CONFLICT OF INTERESTS

What is a “Conflict of Interests” - A conflict of interests can be of two types:

Pecuniary - an interest that a person has in a matter because of a reasonable likelihood or expectation of appreciable financial gain or loss to the person or another person with whom the person is associated.

Non-pecuniary – a private or personal interest that a Council official has that does not amount to a pecuniary interest as defined in the Code of Conduct for Councillors (eg. A friendship, membership of an association, society or trade union or involvement or interest in an activity and may include an interest of a financial nature).

Remoteness – a person does not have a pecuniary interest in a matter if the interest is so remote or insignificant that it could not reasonably be regarded as likely to influence any decision the person might make in relation to a matter or if the interest is of a kind specified in the Code of Conduct for Councillors.

Who has a Pecuniary Interest? - a person has a pecuniary interest in a matter if the pecuniary interest is the interest of the person, or another person with whom the person is associated (see below).

Relatives, Partners - a person is taken to have a pecuniary interest in a matter if:

· The person’s spouse or de facto partner or a relative of the person has a pecuniary interest in the matter, or

· The person, or a nominee, partners or employer of the person, is a member of a company or other body that has a pecuniary interest in the matter.

N.B. “Relative”, in relation to a person means any of the following:

(a) the parent, grandparent, brother, sister, uncle, aunt, nephew, niece, lineal descends or adopted child of the person or of the person’s spouse;

(b) the spouse or de facto partners of the person or of a person referred to in paragraph (a)

No Interest in the Matter - however, a person is not taken to have a pecuniary interest in a matter:

· If the person is unaware of the relevant pecuniary interest of the spouse, de facto partner, relative or company or other body, or

· Just because the person is a member of, or is employed by, the Council.

· Just because the person is a member of, or a delegate of the Council to, a company or other body that has a pecuniary interest in the matter provided that the person has no beneficial interest in any shares of the company or body.

Disclosure and participation in meetings

· A Councillor or a member of a Council Committee who has a pecuniary interest in any matter with which the Council is concerned and who is present at a meeting of the Council or Committee at which the matter is being considered must disclose the nature of the interest to the meeting as soon as practicable.

· The Councillor or member must not be present at, or in sight of, the meeting of the Council or Committee:

(a) at any time during which the matter is being considered or discussed by the Council or Committee, or

(b) at any time during which the Council or Committee is voting on any question in relation to the matter.

No Knowledge - a person does not breach this Clause if the person did not know and could not reasonably be expected to have known that the matter under consideration at the meeting was a matter in which he or she had a pecuniary interest.

Non-pecuniary Interests - Must be disclosed in meetings.

There are a broad range of options available for managing conflicts & the option chosen will depend on an assessment of the circumstances of the matter, the nature of the interest and the significance of the issue being dealt with. Non-pecuniary conflicts of interests must be dealt with in at least one of the following ways:

· It may be appropriate that no action be taken where the potential for conflict is minimal. However, Councillors should consider providing an explanation of why they consider a conflict does not exist.

· Limit involvement if practical (eg. Participate in discussion but not in decision making or vice-versa). Care needs to be taken when exercising this option.

· Remove the source of the conflict (eg. Relinquishing or divesting the personal interest that creates the conflict)

· Have no involvement by absenting yourself from and not taking part in any debate or voting on the issue as of the provisions in the Code of Conduct (particularly if you have a significant non-pecuniary interest)

RECORDING OF VOTING ON PLANNING MATTERS

Clause 375A of the Local Government Act 1993 – Recording of voting on planning matters

(1) In this section, planning decision means a decision made in the exercise of a function of a council under the Environmental Planning and Assessment Act 1979:

(a) including a decision relating to a development application, an environmental planning instrument, a development control plan or a development contribution plan under that Act, but

(b) not including the making of an order under that Act.

(2) The general manager is required to keep a register containing, for each planning decision made at a meeting of the council or a council committee, the names of the councillors who supported the decision and the names of any councillors who opposed (or are taken to have opposed) the decision.

(3) For the purpose of maintaining the register, a division is required to be called whenever a motion for a planning decision is put at a meeting of the council or a council committee.

(4) Each decision recorded in the register is to be described in the register or identified in a manner that enables the description to be obtained from another publicly available document, and is to include the information required by the regulations.

(5) This section extends to a meeting that is closed to the public.

BYRON SHIRE COUNCIL

Adoption of Minutes from Previous Meetings 3.1

Adoption of Minutes from Previous Meetings

Report No. 3.1 Adoption of Minutes from Previous Meeting

Directorate: Infrastructure Services

Report Author: Dominika Tomanek, Executive Assistant Infrastructure Services

File No: I2021/631

RECOMMENDATION:

That the minutes of the Water, Waste and Sewer Advisory Committee Meeting held on 18 February 2021 be confirmed.

Attachments:

1 Minutes 18/02/2021 Water, Waste and Sewer Advisory Committee, I2021/235 , page 8⇩

Report

The attachment to this report provides the minutes of the Water, Waste and Sewer Advisory Committee Meeting of 18 February 2021 .

Report to Council

The minutes were reported to Council on 25 March 2021 without changes.

Comments

In accordance with the Committee Recommendations, Council resolved the following:

21-096

Resolved that Council adopt the following Committee Recommendations:

Report No. 4.1 Byron STP Condition 9 Additional Load - Quarterly Report

File No: I2021/161

Committee Recommendation 4.1.1

1. That Council recognises:

a) That Additional Load approved since 2006 is of the order of 1.6 ML/day;

b) That in recent years 1.1 ML/day of Byron STP’s effluent has been reused;

c) That Consent Condition 9 approved by Council in December 2002 states “Additional load at West Byron STP will not be accepted until: availability of sufficient reuse capacity to accommodate 100% of the volume of treated effluent generated by the additional load ”;

2. That Council seeks an independent planning assessment during the current financial year, of the interpretation of, compliance with, and ongoing fulfilment of Condition 9;

3. That Council seeks more opportunities to re-use effluent as soon as possible

21-097

Resolved that Council adopt the following Committee Recommendations:

Report No. 4.2 Inflow and Infiltration - Sewer Asset Management

File No: I2021/175

Committee Recommendation 4.2.1

1. That Council notes the report.

2. That reporting to the committee and Council on the sewer rectification programme be annual (or more frequent if needed).

3. That reporting on Inflow/Infiltration continue to each Water, Waste and Sewer Advisory Committee meeting after any storm event where a Daily Inflow to an STP has exceeded its ADWF by factor of 10 or more, plus annually.

21-098

Resolved that Council adopt the following Committee Recommendations:

Report No. 4.3 Myocum Quarry status and rehabilitation update

File No: I2021/226

Committee Recommendation 4.3.1

1. That Council recognises its obligations in respect of the management and rehabilitation of Myocum Quarry.

2. That this issue be the first item on a future Agenda to the Water, Waste and Sewer Advisory Committee and include a site visit.

BYRON SHIRE COUNCIL

Staff Reports - Sustainable Environment and Economy 4.1

Staff Reports - Sustainable Environment and Economy

Report No. 4.1 DA water

Directorate: Sustainable Environment and Economy

Report Author: Cameron Clark, Manager Utilities

File No: I2021/565

Summary:

The purpose of this report is to respond to questions raised by Mr Duncan Dey and Cr Cate Coorey in relation to the process of how advice to developer’s works and what sewer load does Council think should be catered for from the hospital precinct at the western end of Ewingsdale Road?

The process of referrals is as follows:

1. Development applications (DA) are referred to water and sewer engineers for comment where there is likely to be an increase in load or a structural impact on the water and sewage infrastructure including, mains, reservoirs, pump stations and treatment plants.

2. If the DA is to be approved – Conditions are recommended to require a certificate of compliance under the terms of the Water Management Act 2000. Conditions may be imposed to:

a. to pay a specified amount to the water supply authority by way of contribution towards the cost of such water management works as are specified in the notice, being existing works or projected works, or both,

b. to construct water management works to serve the development.

3. If refused – and there is water and sewer matters that are reasons for refusal then they are incorporated into the reasons for refusal.

The Utilities Systems Planning Engineers are responsible for assessing the DA under the adopted equivalent tenement policy (ET Policy) and the development servicing plans (DSP). The DSP sets the rate of the contribution and the ET policy determines the level of demand. The engineers are also responsible for assessing the available capacity in the network to service the development. This includes downstream pump stations and the treatment plant. Where a new pump station or main is required it must have sufficient capacity to cater for the design capacity of the upstream mains and pump stations in the network.

Byron Central Hospital Pump Station

At the ordinary meeting of 9 October 2014 Council considered a report on state significant development application SSD 6573 Byron Shire Central Hospital (E2014/55602) provided as attachment 1.

Council resolved at minute 14-502

1) That Council:

a) Advise the Department Planning and Environment of its general support for the development of a Byron Shire Central Hospital (BSCH); and

b) Forward a copy of this report to the Department to identify the issues associated with the BSCH; and

c) Forward a copy of this report to the media including a press release identifying the issues associated with the BSCH.

d) Request that the Department include the recommended conditions of consent at the end of this report into the consent for the BSCH;

e) Endorse the payment of Section 64 charges for sewer in accordance with the table at the top of page 44.

2) That Council delegate staff to set the design parameters required for the rising main to service the BSCH and the development immediately adjacent that site (east and west) that is currently the subject of a rezoning. The holding well capacity shall be designed to satisfy the demand for the possible future development of Ewingsdale locality. The cost of Council’s share of the design and construction to be funded from the Section 64 Sewer Fund.

3) That due to the proposed new Hospital not containing an operating theatre providing surgical services, which has always been considered essential by the Byron Shire Community Consultative Committee in its support for a new facility, this council cannot support the proposal in its current form. (Spooner/Richardson)

Council resolved to future proof the pump well and rising main at the Byron Central Hospital by giving it extra capacity. The hospital needed 100 ET but for minimal extra cost 1000 ET capacity was provided in case we ever wanted to sewer Ewingsdale. That infrastructure can sit their unused but it would be very expensive to come back and upgrade it later.

The hospital rising main will now connect to the new West Byron pump station. So it in turn needs to have the extra capacity.

RECOMMENDATION:

That Council notes the report.

Attachments:

1 Report Ordinary - submission to Department of Planning submission on Byron Central Hospital Ewingsdale Hospital, E2014/55602 , page 17 ⇩

BYRON SHIRE COUNCIL

Staff Reports - Infrastructure Services 4.2

Staff Reports - Infrastructure Services

Report No. 4.2 Mullumbimby Future Water Strategy

Directorate: Infrastructure Services

Report Author: Dean Baulch, Principal Engineer, Systems Planning

File No: I2021/478

Summary:

To provide information relating to the development of a Future Water Supply Strategy for Mullumbimby.

The key issue to be addressed is water supply security (servicing existing customers and future development over the long-term). The current demand for water in Mullumbimby is virtually equal to the current secure yield at Laverty’s Gap weir and if the worst drought on record were to repeat, the current supply may not meet demand.

Based on the Triple Bottom Line assessment, the most favourable scenario is a permanent connection to the Rous regional supply.

RECOMMENDATION:

That the Committee:-

1. Note the report.

2. Allow Council to consider the preferred strategic direction of staff to facilitate the start of detailed works.

Report

Information/Background:

Mullumbimby’s drinking water supply is extracted from Laverty’s Gap Weir on Wilsons Creek where it flows by gravity through an open channel, via a mountain tunnel to the Mullumbimby water treatment plant (WTP) as shown on Figure 1. The channel and tunnel were the original raw water transfer system to the Mullumbimby Hydroelectric Power Station (now decommissioned). The Mullumbimby water supply currently services approximately 1,620 residential properties (3,200 people) and 270 non-residential properties. Approximately 13 customers along Wilsons Creek Road are connected to the trunk main from the WTP.

Figure 1: Mullumbimby water supply schematic diagram

Council engaged Hydrosphere Consulting to prepare a long-term strategy for Mullumbimby water supply. The key issue to be addressed is water supply security (servicing existing customers and future development over the long-term). The current demand for water in Mullumbimby is virtually equal to the current secure yield at Laverty’s Gap weir and if the worst drought on record were to repeat, the current supply may not meet demand. Council has prepared growth management strategies for urban land, rural areas and business/industrial land which include future development that will increase the demand for potable water.

The water supply strategy also considers the following issues:

· Asset condition and performance – the raw water channel (constructed in the 1920s) has exceeded its useful life. The likelihood of failure is considered very high and on the basis that structural failure of the channel would cause extended interruption to the water supply, upgrading the raw water transfer system is a high priority. In addition the Mullumbimby WTP (originally constructed in 1940), requires replacement in the next five to ten years and short-term options are required to ensure removal of pathogens.

· Drought management and emergency response – restrictions are currently introduced based on the water level and inflows in Laverty’s Gap weir. Restrictions were imposed in Mullumbimby during the droughts of 2002/03, 2006/07 and 2019/20. An emergency supply from the Rous County Council regional supply can supply water to lower elevation areas (East Mullumbimby) and was used for 30 days during summer 2019/20.

· Heritage considerations and management obligations – Laverty’s Gap weir and the channel (as part of the Mullumbimby hydro-electric power complex) are listed on the NSW State Heritage Register. In addition, the WTP has heritage significance at a local level.

This report assesses the security of the existing water supply system based on its secure yield and current demand. Options to increase the supply and reduce potable water demand have been identified and analysed and scenarios have been developed using combinations of the options to achieve the required secure yield in 2050. An integrated water cycle management (IWCM) approach has been used to compare options and scenarios and identify the preferred supply augmentation scenario to meet the predicted 2050 demand. Community consultation has not yet been undertaken.

Secure Yield, Forecast Demand and Water Supply Security

‘Secure yield’ is defined as the highest annual water demand that can be supplied from a water supply headworks system whilst water restrictions are not too severe, not too frequent, nor of excessive duration.

Mullumbimby’s demand for water is increasing with development and population growth. The dry year unrestricted demand at 2050 is predicted to be 754 ML/a (assuming water loss management activities are successful). Water security is achieved if the secure yield of a water supply is at least equal to the unrestricted dry year annual demand. The RCC emergency supply pipeline improves the water supply security although it is not intended to operate any more than an emergency supply. The supply is currently secure until 2027 (Figure 2). The supply deficit at 2050 (excluding the emergency supply) will be 377 ML/a.

Figure 2: Comparison of forecast raw water demand, licence entitlement and secure yield

Water Supply Options and Supply Scenarios

A coarse screening assessment considered a range of new as well as previously identified supply options. Short listed supply-side options are:

Option 1. Do nothing (assessed for comparison with augmentation options).

Option 2. Raising Laverty’s Gap weir.

Option 3. Off-stream storage.

Option 4. A: Permanent connection to the RCC bulk water supply.

B: Emergency connection to regional supply

Option 5. Groundwater.

Following a detailed assessment of these options, raising Laverty’s Gap weir was not recommended for further consideration due to the minimal yield benefit, high costs and significant impacts on terrestrial biodiversity as well as downstream users and the environment.

Four supply scenarios have been developed from combinations of the options that achieve the required secure yield over the long-term (754 ML/a, an increase of 377 ML/a at 2050). All scenarios include the following common components in the short-term:

· Continued use of the weir supply and WTP in the short term: the existing supply from Laverty’s Gap weir and the existing WTP will continue to operate and supply treated water to Mullumbimby in the interim until a long-term solution is implemented and operational.

· WTP short-term upgrades: required to ensure microbially safe water is delivered to residents. Short-term upgrades are recommended regardless of the water supply augmentation scenario adopted. These are estimated to cost $380,000 (plus BSC labour) over the next 5 years.

· Continued operation of the RCC emergency supply pipeline: The emergency supply pipeline currently connects the Mullumbimby reticulation network to the RCC regional supply with up to 0.5 ML/d distributed the low-lying areas of the town during emergency drought situations. This pipeline should be extended so that an emergency supply is available for all customers.

· Increase in the licence extraction limit: Consultation with DPIE to secure an increase in the weir licence extraction limit which may be required from 2023 depending on the reliance on the supply from the weir (refer Figure 2).

· Review and update of the drought management plan based on the performance of the supply and drought management regime during the recent drought.

· Urban effluent reuse opportunities: Continued identification and implementation of urban effluent reuse opportunities to reduce future demand and the yield deficit.

· Implementation of the demand management measures in the Regional Demand Management Plan (including rainwater tank rebates, the Sustainable Water Partner Program, smart metering and community engagement and education) and Council’s water loss reduction measures.

· Continued investigation of the long-term impacts of climate change on the secure yield of the weir supply.

· Rehabilitation of the raw water channel to preserve heritage. The heritage requirements are being identified in a separate study.

The potentially feasible water supply augmentation scenarios are:

· Scenario S1: Base case: Improvements to the existing raw water transfer system, a new WTP and full emergency connection to the regional supply. This scenario would provide secure yield until 2025. Beyond 2025, restrictions may become more frequent and/or more severe.

· Scenario S2: Off-stream storage: Improvements to the existing raw water transfer system, full emergency connection to the regional supply, construction of a 200 ML off-stream storage and new WTP. High stream flows (excluding an allowance for environmental flows) would be transferred to fill the off-stream storage. Water from the storage will be treated at the new WTP and transferred to the township.

· Scenario S3: Permanent connection to RCC regional supply: In this scenario, Mullumbimby would form part of the RCC regional supply network with bulk treated water transferred to the Azalea Street reservoirs. The weir supply and Mullumbimby WTP would become redundant but may be retained by RCC to supplement the regional supply.

· Scenario S4: Supplementary groundwater: Improvements to the existing raw water transfer system, a new WTP, full emergency connection to the regional supply, construction of new bores to the south-west of Mullumbimby with raw water transferred either to the weir or a new groundwater WTP for treatment and distribution to the township.

The preferred option to upgrade the raw water transfer system from the weir (for S1, S2 and S4) is a new pumped pressure pipeline following an alternative alignment that is independent of the channel. The channel would be retained and operate in combination with the new main.

The four scenarios have been compared using a triple-bottom-line (TBL) assessment which assesses each scenario based on environmental, social and economic criteria. Based on the TBL assessment, the most favourable scenario is S3: Permanent connection to RCC regional supply (Figure 3). This scenario would have minimal environmental impact and the security of supply is only limited by the security of the RCC regional supply. The net present value of this scenario is similar to S1: Base Case and S4: Groundwater and significantly less than S2: Off-stream storage. There are significant cost savings in avoiding the need to replace the Mullumbimby WTP and upgrade the weir supply.

Figure 3: Preferred scenario S3: Permanent connection to RCC regional supply

Implementation Plan

The following actions are required to progress the implementation of the preferred scenario:

· Construction of extension to emergency pipeline.

· Consultation with the community.

· Consultation with Rous County Council.

· Consultation with state government agencies (e.g. NRAR, DPI – Fisheries).

Other actions being conducted in parallel are:

· Statement of heritage impact.

· Urban water metabolism project (review and update of recycled water management strategy).

· Short-term upgrades to the WTP.

Risk:

A number of risk ratings are likely to increase if an adequate water supply for the future is not secured, these relate to the Strategic Risk Register and the following references:

· 1. Asset and Infrastructure Management

· 2. Essential Services

· 5. Urban Planning

Consultation:

Who was consulted?	How did consultation occur? e.g. email, verbal etc	Comments/Feedback
Council Executive Team	ET Report and Presentation	Executive Team was updated on progress March 2021
SEE Key Planners	Meeting/Verbal	To be updated on progress after ET informed.

Communicate to: Utilities Team to continue formal communication with SEE Planners (Residential Strategy) and Executive Team.

Strategic Considerations

Community Strategic Plan and Operational Plan

CSP Objective	L2	CSP Strategy	L3	DP Action	L4	OP Activity
Community Objective 1: We have infrastructure, transport and services which meet our expectations	1.5	Provide continuous urban water and sewerage services within the Shire	1.5.3	Ensure Water Supply is maintained in accordance with NSW Health guidelines	1.5.3.2	Implement recommendations from Mullumbimby water supply security investigations and upgrade

Financial Considerations

Current budget and planned budgets from 30 year Capital works plan shown as follows:

Year	WATER FUND - CAPITAL WORKS PROGRAM AND FUNDING	Budget
2020/2021	Mullum water supply security investigations and upgrade	$235,200
2020/2021	Mullumbimby WTP - Renewals	$50,000
2021/22	Mullum water supply security upgrade	$2,000,000
2021/22	Mullumbimby WTP - Renewals	$15,000
2022/23	Mullumbimby WTP - Renewals	$589,800
2025/26	Mullumbimby WTP - Renewals	$35,500
2026/27	Mullumbimby WTP - Renewals	$74,000
2026/27	Mullum water supply security upgrade	$2,449,000
	TOTAL	$5,448,500

Based on the Triple Bottom Line assessment, the most favourable scenario is: S3: Permanent connection to RCC regional supply. There are significant cost savings in avoiding the need to replace the Mullumbimby WTP and upgrade the weir supply.

BYRON SHIRE COUNCIL

Staff Reports - Infrastructure Services 4.3

Report No. 4.3 Byron STP Condition 9 Additional Load - Quarterly Report

Directorate: Infrastructure Services

Report Author: Dean Baulch, Principal Engineer, Systems Planning

Vivianne Lins, Environmental Planner

File No: I2021/605

Summary:

This report is for the Committee’s information and reviews compliance with the Byron Bay

Sewerage Augmentation Scheme - Conditions of Approval (2002).

Condition 9(iii) requires that sufficient reuse (recycled water) capacity be available before the acceptance of any additional load at the treatment plant.

In the years since the approval was granted (2002 to date), 2,749 Equivalent Tenements (ET) have

been approved, resulting in an additional load of 1.622 ML/day at the treatment plant. The current

day operating capacity of the reuse system equates to 2.02ML/day or 3,427ET. Therefore the

reuse system provides sufficient capacity to accommodate the additional load as defined in the Conditions of Approval.

RECOMMENDATION:

That the report is noted.

REPORT

The relevant section from Condition 9 of the Approval is Condition 9(iii), which states, “Additional load at West Byron STP will not be accepted until: availability of sufficient reuse capacity to accommodate 100% of the volume of treated effluent generated by the additional load”.

“Additional Load” is defined in the report as “any sewage load resulting from development consents after the date of this approval”. Date of Approval is 9 December 2002.

From December 2002 through to the end of March 2021, 2,749 additional sewer Equivalent Tenements (ET) have been approved by Council through development consents. This additional load (including approvals for secondary dwellings) was also adjusted (reduced) based on development applications that have been withdrawn or refused during the same period. Figure 1 shows the annual approved additional ET load from 2002 to 2021.

Figure 1 - Equivalent Tenements approved by Council from 2002-2021

The current day operating capacity of the reuse system to produce treated effluent is 26 Litres per second or 2.25ML/day less 10% of water for filter backwash purposes equates to 2.02ML/day or 3,427ET.

Current Approved

Available Capacity

(ET)

Condition 9(iii) Additional Load Calculation

2,749

Current effluent reuse system capacity 2020

3,427

678

Therefore, the existing reuse system provides sufficient capacity to accommodate the additional load as defined in the Conditions of Approval.

Committee Report Tracking Summary: Condition 9. Additional Load at Byron STP	Current Approved ET	Difference (ET)
30 January 2020	2,408	-
30 July 2020	2,478	70
29 October 2020	2,508	30
18 February 2021	2,738	230
29 April 2021	2,749	11

In terms of the actual reuse volumes for Byron Bay since the system was commissioned the following annual figures are provided:

Calendar Year	Total Urban Reuse Flows (ML)
2006	258.8
2007	336.1
2008	204.4
2009	174.5
2010	257.2
2011	287.4
2012	294.0
2013	287.2
2014	296.9
2015	261.9
2016	221.8
2017	257.3
2018	246.7
2019	424.7
2020	405.2
*2021	96.2

BYRON SHIRE COUNCIL

Staff Reports - Infrastructure Services 4.4

Report No. 4.4 Ocean Shores transfer to Brunswick Valley STP

Directorate: Infrastructure Services

Report Author: Dean Baulch, Principal Engineer, Systems Planning

File No: I2021/615

Summary:

Council has had recent correspondence and meetings with NSW Environment Protection Authority (EPA) regarding compliance with licence conditions at Ocean Shores STP – The EPA has completed a Environmental Risk Assessment and raised the risk rating of the Ocean Shores system from medium to high due to concerns around treatment performance.

Council is now at a decision point relating to Ocean Shores STP.

RECOMMENDATION:

That the status report be noted

Report

This is a status update for information:

Council is now at a decision point relating to Ocean Shores STP.

Ocean Shores STP operates under a relatively old NSW EPA environmental licence. The concentration limits of this licence are relatively lenient (e.g. in respect of ammonia) compared with more modern licences for similar sized plant in the region (e.g. Brunswick Valley STP). Similarly, the mass load limits for nutrients (e.g. Total N), when converted to likely effective average concentrations based on average flow estimates, are relatively lenient.

At Council’s Ordinary Meeting of 22 June 2017 it was resolved to investigate operational risks cited in the GHD Study and report back to Council via the Committee on the Ocean Shores Transfer to Brunswick Valley STP Option 4.

The risk assessment for Option 4 was finalised by GHD in December 2017 and identified the most significant risks and appropriate mitigation.

The Option 4 transfer of sewage from Ocean Shores to Brunswick Valley STP also represents a significant financial saving to Council in the longer term.

From Council Meeting of 19 April 2018, Resolution: 18-278

That Council adopt the following Committee Recommendation(s):

The Committee have a workshop to further consider Ocean Shore Sewage Transfer Risk Assessment including:

a) An up-to-date assessment of the capacity of the OS STP

b) Sensitivity of whole-of-life cost assessment of options for BVSTP and OSSTP to reduced augmentation requirements at OS STP

c) Projection of comparative nutrient loads to the Brunswick River and under the Option 4 and Option 1 scenarios

Items a) & c) are now complete. They are not attached to this report as they are large technical reports. Item b) needs to be updated in today’s dollars.

Staff recommend that Council proceed to detailed design phase for Option 4 of an upgraded plant at Brunswick Valley STP

Key issues

· Compliance with NSW EPA Licence requirements

· Performance of the Ocean Shores STP

· Link to the Mullumbimby Water Supply Strategy relating to reuse water opportunities for Mullumbimby

Next steps

· Require direction from Council. Committee Workshop.

Strategic Considerations

Community Strategic Plan and Operational Plan

CSP Objective	L2	CSP Strategy	L3	DP Action	L4	OP Activity
Community Objective 1: We have infrastructure, transport and services which meet our expectations	1.5	Provide continuous urban water and sewerage services within the Shire	1.5.2	Ensure Wastewater Treatment Plants are maintained in accordance with operating licences	1.5.2.1	Monitor and compile annual licence returns

Legal/Statutory/Policy Considerations

Compliance with NSW EPA Licence conditions.

Financial Considerations

The capital cost of Option 4, is estimated to be $10 Million. This is a significant saving to the community in both initial capital and whole of life costs.

An upgrade of Ocean Shores STP alone has a capital cost of $29 Million.

On Net Present Value terms Option 4 has the potential to save Council up to $18 Million. In general, a transfer of Ocean Shores to Brunswick Valley STP provides an NPV saving in the $Millions.

BYRON SHIRE COUNCIL

Staff Reports - Infrastructure Services 4.5

Report No. 4.5 Inflow and Infiltration - April 2021 update

Directorate: Infrastructure Services

Report Author: Jason Stanley, Inflow & Infiltration Project Manager

File No: I2021/616

Summary:

Environmental Data Services (EDS) are planning to provide a presentation to the committee covering the sewer flow metering performed within Mullumbimby.

This report provides Average Dry Weather Flows that are to be referred to for future Inflow and Infiltration reporting until such time that a modern day industry standard can be utilised for each STP.

RECOMMENDATION:

1. That the committee:

a) Note the presentation from Environmental Data Services

b) Notes the interim Average Dry Weather Flow values which will trigger inflow and infiltration reporting until such time that Average Dry Weather Flows are available using a modern day industry method.

Report

The following is an extract of the request for information received from Duncan Day, dated Thursday 1^st April 2021:

For reporting to our next Committee meeting, could the following daily data be presented for BVSTP please?

A matrix (spreadsheet would be great) for

(i) the five days used to establish ADWF, and

(ii) the wet days 17 to 25 March, with the following figures:

1. daily inflow to the STP;

2. individual sewer catchment pump station pump hours and flows (if conversion of hours to kL/day is known).

Average Dry Weather Flow (ADWF)

Please refer to Council resolution 20-054 from 27^th February 2020:

It is understood that this ADWF investigation will be reported to the next scheduled WWSAC meeting. Until these ADWF’s have been identified, interim values will be used purely for the basis for future reporting where a daily inflow to an STP has exceeded its ADWF by factor of 10 or more.

This interim measure will utilised the dry weather flow definition as per Council’s Water and Sewer Equivalent tenement policy which states:

The average daily flow to the treatment works during seven consecutive days without rain (excluding a period which includes public holidays) following seven days during which the rainfall did not exceed 0.25 millimetres on any one day.

Referring to the Bureau of Meteorology’s Climate Data Online database, the most recent event which meets these criteria is 17^th to 24^th November 2020. Screenshots of daily rainfall recorded at Mullumbimby (Fairview Farm) and Byron Bay (Cape Byron AWS) are provided below.

Figure 1 - Daily Rainfall for 2020, Mullumbimby Station #58040, Source: Bureau of Meteorology

Figure 2 - Daily Rainfall for 2020, Byron Bay Station #58216, Source: Bureau of Meteorology

Data for inflows into each STP at this time has been extracted and placed into the following table:

Utility	Byron Bay STP	Bangalow STP	Brunswick Valley STP	Ocean Shores STP
Parameter	Total Daily Inflow	Inlet Flow Total	Total Daily Inflow	Total Daily Inflows
Units	kL	kL	kL	kL




Date	Value	Value	Value	Value
17/11/2020	4630.60	380.00	1237.45	1306.11
18/11/2020	4623.66	376.00	1217.26	1291.18
19/11/2020	4740.49	259.00	1219.50	1308.24
20/11/2020	4844.33	377.00	1257.91	1289.76
21/11/2020	4684.12	359.00	1253.51	1323.92
22/11/2020	4650.51	353.00	1258.30	1353.18
23/11/2020	4689.04	382.00	1245.76	1328.00

Average	4694.68	355.14	1241.38	1314.34

Therefore, interim ADWF to use for reporting Inflow and Infiltration for each STP site are as follows:

Bangalow STP 355 kL / day

Brunswick Valley STP 1,241 kL / day

Byron Bay STP 4,695 kL / day

Ocean Shores STP 1,314 kL / day

Individual sewer catchment pump station pump hours and flows

An excel spreadsheet (Council reference #E2021/56975) will be provided with the WWSAC agenda which provided individual pump station pump hours and flows.

Daily Inflow into the Brunswick Valley STP

Data for inflows into the Brunswick Valley STP has been extracted and placed into the following table:

Date	Brunswick Heads	Mullumbimby	Total Inflows (kL)
1/03/2021	646.0	1418.4	2064.4
2/03/2021	649.2	1380.6	2029.8
3/03/2021	603.1	1392.2	1995.3
4/03/2021	862.6	3096.7	3959.2
5/03/2021	738.6	1754.2	2492.8
6/03/2021	664.0	2126.2	2790.2
7/03/2021	714.5	1530.5	2245.0
8/03/2021	667.7	1609.5	2277.2
9/03/2021	762.9	4734.3	5497.1
10/03/2021	702.0	4389.6	5091.6
11/03/2021	930.5	6948.2	7878.8
12/03/2021	834.8	3762.2	4597.0
13/03/2021	817.5	2649.8	3467.3
14/03/2021	728.6	2178.5	2907.1
15/03/2021	951.2	6400.2	7351.4
16/03/2021	859.0	5046.4	5905.4
17/03/2021	912.0	5046.3	5958.3
18/03/2021	1163.2	5046.3	6209.5
19/03/2021	1080.2	6898.0	7978.2
20/03/2021	1074.9	8438.5	9513.4
21/03/2021	2500.7	8438.6	10939.3
22/03/2021	2680.8	8438.6	11119.4
23/03/2021	2668.2	8438.6	11106.8
24/03/2021	1561.7	8323.7	9885.4
25/03/2021	1141.1	4294.4	5435.5
26/03/2021	1032.7	2864.9	3897.7
27/03/2021	966.7	2332.9	3299.6
28/03/2021	911.7	2002.4	2914.1
29/03/2021	828.8	1831.3	2660.1
30/03/2021	930.9	2745.9	3676.8

BYRON SHIRE COUNCIL

Staff Reports - Infrastructure Services 4.6

Report No. 4.6 Item for discussion - HuskeeSwap

Directorate: Infrastructure Services

Report Author: Danielle Hanigan, Team Leader Resorce Recovery and Quarry,

File No: I2021/617

Summary:

Request from Cr.Coorey into the potential use of Huskee cups scheme in the Byron shire.

Report

In partnership with Make the Switch, Byron Shire Council is providing the opportunity for cafes to apply for a funded reusable coffee cup scheme.

In consultations with cafes, different barriers to reusables were identified
Council has engaged 3 reusable cup schemes (Huskee Cup, Green Caffeen and Kuppa Cup) and discussed how each could be implemented.

Expressions of interest have been sent out to selected cafes for feedback.
6 cafes have already responded that they would like to take part.

Advertisements will be run to invite more cafes to join.
Cafes will have to commit to the encouragement and acceptance of BYO cups and containers.

The project will be shire wide.
The reuseables schemes will be part of a larger campaign of ‘Byron loves BYO’.

Background

The Make the Switch program funded by the EPA Better Waste and Recycling Fund has assisted over 50 cafes to switch to more sustainable packaging alternatives.

However single-use packaging is a major contributor to waste in our shire. Single use takeaway packaging is overflowing in our public place bins and can be easily replaced with reusables.

COVID-19 has contributed to even more single-use and has impacted how businesses operate, but there are plenty of ways we can safely use reusables, which can be more hygienic than relying on single use. Furthermore, despite seeing such an increase in the use of takeaway items over the last 12 months of the pandemic, reusables were actually never banned in New South Wales.

Our aim is to make reusables safe and accessible for residents and visitors, while also encouraging business and customers to support 'bringing your own' cup or container in all forms for all occasions.

Key issues

· To switch to more sustainable packaging alternatives

· Single use takeaway packaging is overflowing in our public place bins and can be easily replaced with reusables.

· Aim is to make reusables safe and accessible for residents and visitors

· Encouraging business and customers to support 'bringing your own' cup or container in all forms for all occasions

Next steps

· Finalising consultations

· Hoping to have the schemes and campaign up and running by the end of May

Strategic Considerations

The reuseables schemes will be part of a larger campaign of ‘Byron loves BYO’

Legal/Statutory/Policy Considerations

Not Applicable

Financial Considerations

Partially funded through Make the switch program which is funded through EPA Better Waste and Recycling Fund

Consultation and Engagement

Initial consultation and engagement with cafes in Byron, Bangalow and Mullumbimby with scope to involve other areas throughout the shire.

Venue	Conference Room, Station Street, Mullumbimby
Date	Thursday, 29 April 2021
Time	9.00am