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Council
15 July 2015
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1 Apologies
At the close of
the agenda no apologies had been received.
2 Leave
of absence
At the close of
the agenda no requests for leave of absence had been received.
3 Conflict
of Interest
Councillors are
reminded of the need to be vigilant to stand aside from decision-making when a
conflict arises between their role as a councillor and any private or other
external interest they might have.
4 Public Forum
Notification to speak
is required by 5pm at least two days before the meeting. Further information is
available on www.southlanddc.govt.nz
or phoning 0800 732 732.
5 Extraordinary/Urgent
Items
To consider, and if
thought fit, to pass a resolution to permit the Council to consider any further
items which do not appear on the Agenda of this meeting and/or the meeting to
be held with the public excluded.
Such resolution is
required to be made pursuant to Section 46A(7) of the Local Government Official
Information and Meetings Act 1987, and the Chairperson must advise:
(i) The
reason why the item was not on the Agenda, and
(ii) The reason why the
discussion of this item cannot be delayed until a subsequent meeting.
Section 46A(7A) of the Local Government Official Information and Meetings
Act 1987 (as amended) states:
“Where an item
is not on the agenda for a meeting,-
(a) That item
may be discussed at that meeting if-
(i)
That item is a minor matter relating
to the general business of the local authority; and
(ii)
the presiding member explains at the
beginning of the meeting, at a time when it is open to the public, that the item
will be discussed at the meeting; but
(b) no resolution,
decision or recommendation may be made in respect of that item except to refer
that item to a subsequent meeting of the local authority for further
discussion.”
6 Confirmation
of Council Minutes
6.1 Meeting
minutes of Council, 24 June 2015
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Council
15 July 2015
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Mackenzie
Street Stormwater Repairs
Record No: R/15/7/11742
Author: Matthew
Keil, Operations Technician
Approved by: Ian
Marshall, GM - Services and Assets
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Decision ☒ Recommendation ☐ Information
Purpose
1 Recommending
the urgent commencement of an unplanned pipeline renewal project incorporating
100 lineal metres renewing the existing 150 mm concrete stormwater main between
Prince Street and Queen Street situated within the berm on Mackenzie Street,
Winton.
Executive
Summary
2 This
report outlines the existing poor condition of an existing stormwater main on
Mackenzie Street including the proposal to complete an unplanned
stormwater pipeline renewal project within this area.
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Recommendation
That the Council:
a) Receives
the report titled “Mackenzie Street Stormwater Repairs” dated
7 July 2015.
b) Determines
that this matter or decision be recognised as not significant
in terms of Section 76 of the Local Government Act 2002.
c) Determines
that it has complied with the decision-making provisions of the Local
Government Act 2002 to the extent necessary in relation to this decision; and
in accordance with Section 79 of the Act determines that it does not require
further information, further assessment of options or further analysis of
costs and benefits or advantages and disadvantages prior to making a decision
on this matter.
d) Approves
the Mackenzie Street stormwater repairs project to be carried out as an
unplanned project and approves the unplanned total project funding amount
from the Winton stormwater reserves account of $35,894.67 (inclusive of GST).
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Content
Background
3 Due
to a current watermain renewals project in construction within both Prince and
Queen Streets a conflicting defective stormwater main was uncovered.
Council Water and Waste staff instructed the on-site drainage contractor
(Wilson Contractors) to complete a 10 lineal metre repair on the affected
main. What was uncovered was a significantly defective downstream
pipeline which was confirmed via hydro excavated keyholes and water blasting.
4 The
affected stormwater pipeline is 100 lineal metres and situated within the
roadside berm on Mackenzie Street between Prince Street and Queen Street within
the Winton township.
5 Current
details on the 150 mm concrete stormwater main indicate an installation date of
1956 on the affected stormwater pipeline with a current age of 59 years, with a
catchment area from 53 Albert Street South towards 34 Arthur Street.
Issues
6 29
Prince Street is a low lying property situated directly adjacent to the
defective stormwater main which has had a number of historical surface flooding
issues. These issues have been received in writing from the property
owners (C R and G D Hendry) outlining concern of the stormwater reticulation
during storm events involving significantly high rainfall.
Factors to Consider
Legal
and Statutory Requirements
7 The
location of the defective stormwater main is within the grass berm within
Council’s corridor on Mackenzie Street.
Community
Views
8 The
proposed Mackenzie Street stormwater repairs project is an unplanned project
and was not programmed within Council’s current Long Term Plan (LTP)
9 Council
Water and Waste Staff have briefed the local Area Engineer on the urgent situation
in Mackenzie Street and also liaised the Winton CDA Chairman, Mr John McHugh,
as per the attached correspondence which indicates an agreeance with the Board
committee at its last meeting dated 8 June 2015.
Costs
and Funding
10 Water
and Waste staff invited four suitably qualified drainage contractors to provide
quotations for the Mackenzie Street repairs which are as outlined on the
attachment to this report. Te Anau Earthworks has supplied the lowest
price conforming price of $27,141.53 plus GST (including contingency).
The fourth contractor invited to provide a quotation (Wilson Contractors Ltd)
declined to provide a price due to contractual requirements and limited
available staff resources.
11 Unplanned
project costs are as outlined below:
Te Anau Earthworks Ltd $27,141.53 plus
GST
SDC Water and Waste
consultancy/supervision fees $4,071.23 plus
GST
GST $4,681.91
Total (including GST) $35,894,67
12 Project
funding was proposed to occur from Winton stormwater reserves which are
currently $111,500.00.
Policy
Implications
13 The
proposed project has not been programed or budgeted to occur within
Council’s current LTP. However it is proposed to be funded from
Winton stormwater reserves as indicated in paragraph 11 and 12.
14 Winton
has only one programed stormwater related project to occur within the current
Long Term Plan during the 2015/2016 year. This project is the
Meldrum Street stormwater investigation which is budgeted to occur from Winton
stormwater reserves for a total of $50,000.00.
Analysis
Options Considered
15 There
are three options relating to the existing stormwater pipeline on Mackenzie
Street which is outlined below.
16 Option
1 - A partial pipeline renewal is the preferred option totalling 100 lineal
metres between Prince Street and Queen Street on Mackenzie Street. This
area of pipeline has been identified as critical area for a renewal which is
positioned within Council’s grass berm.
17 Option
2 - Do nothing and leave the faulty pipeline in commission on Mackenzie Street.
Due to on-site conditions inspected by Water and Waste staff this option
would significantly compromise Council’s position as a utility provider
and also poses habitual and health and safety risk to the residents at 29
Prince Street.
18 Option
3 - Complete a full pipeline and manhole renewal between the two existing
manholes SWMH 3110/0349 and SWMH 3110/0344 totalling 260 100 lineal metres.
Analysis of Options
Option
1 - Partial pipeline renewal as per paragraph 16
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Advantages
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Disadvantages
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· A
new partial pipeline asset with a 100 year life expectancy.
· Lower
maintenance/operating costs.
· A
reduced location risk for maintenance purposes.
· A
significantly improved pipeline to convey stormwater away.
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· Initial
installation costs.
· Time
of year relating to reinstatement of trench line.
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Option
2 - Do nothing as per paragraph 17
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Advantages
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Disadvantages
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· A
short term savings in capital expenditure.
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· Elevated
operational and maintenance expenditure with the current concrete main.
· A
significant health and safety hazard in flood events to traffic, pedestrians
and adjacent property owners.
· A
habitual flooding risk to the existing dwelling at 29 Prince Street.
· Possibility
of compromising liability from completing nothing.
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Option 3 - Complete pipeline
replacement as per paragraph 18
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Advantages
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Disadvantages
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· A
fully completed asset renewal with a life expectancy of 100 years.
· Lower
maintenance and operating costs.
· A
reduced location risk for maintenance purposes.
· A
significantly improved pipeline to convey stormwater away.
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· Significantly
higher costs from Option 1 due to road crossings required to complete
physical link-ins on the supply.
· Time
of the year relating to reinstatement.
· Remaining
existing pipeline appears to be in adequate condition and could be programed
for renewal at a later date.
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Assessment of Significance
19 The
proposed stormwater project on Mackenzie Street is not of significance as per
Council’s significance and engagement policy.
Recommended Option
20 Water
and Waste staff recommend the existing 150 mm concrete stormwater main be
replaced as outlined within Option 1 within Section 16.
Next
Steps
21 Council’s
Group Manager of Works and Services to award the Mackenzie Street stormwater
repairs project with a lowest conforming price of $27,141.53 plus GST.
22
Attachments
a Mackenzie
Street Stormwater Upgrade - Schedule of Quantities and Prices View
b Mackenzie
Street Plan (A3) View
c Email
from Winton Community Board regarding Mackenzie Street stormwater renewal View
