7 UPDATE ON HARBOUR MANAGEMENT MATTERS PDF 163 KB
To submit a report by the Maritime and Country Parks Officer.
Additional documents:
Minutes:
The Senior Manager – Economy and Community referred to the Dredging
Strategy and noted that Alan Williams (Coastal Engineering UK Ltd) had been
commissioned together with Gwynedd Consultancy to look at the options in terms
of strengthening the Crib Groyne and reducing the
sediment.
A presentation was given by Alun Williams providing details about his
work in assessing and reviewing the Crib Groyne. He
drew attention to four possible options and an estimate of the cost involved,
namely:
1. Minimum maintenance of the existing structure (£10-15,000);
2. Higher level maintenance and reinstatement of the existing structure
(£35-40,000);
3. Vertical extension/encasement of the existing structure using a combination
of (a) crib steelwork or (b) sheet piling and rock armour (£125-135,000 (a) or
£225-240,000 (b)); or
4. Encasement of the existing structure in rock armour (£140-150,000).
The following considerations were highlighted in terms of the options:
·
Both options 1 and 2
require minimal intervention and will provide some but little in the way of
improved performance compared to existing conditions;
·
Options 3 and 4 by
virtue of both increased elevation and improved robustness and integrity will
reduce both transmission through and movement over the structure; however
·
Over a ten year period,
the present value of costs of these options was likely to be higher than
continued practice of dredging and removal; and
·
Options 1, 2 and 4 were
the most flexible in terms of adaptability in future arrangements.
Members were given an opportunity to provide observations and ask
questions to the consultant, and he responded to them as follows:
·
In regards to increasing
the length of the Crib Groyne, increasing the length
of the Crib Groyne had not been included in his brief
and more detailed work in term of modelling, assessing the impact and
environmental considerations would need to be done. He noted that work needed
to be done in the short term;
·
Could possibly consider
moving the trailing arm more to the left when assessing long term options;
·
That using heavy rock
armour or pre-fab concrete structures to reinforce, rather than a steel
structure and moving the trailing arm so that it can enter deep water, was
something to consider.
·
Agreed that option 3
would only prevent the situation from deteriorating for a period, but was
presented as not to rule it out as a possible option;
·
Annual maintenance was a
financial burden and therefore a study of the long term options was needed in
regards of the Crib Groyne and to also consider
moving the direction of the other arm.
The Senior Manager Economy and Community noted that the service was
eager to implement a short term solution in the coming months. He added that a
long term solution would be a 2-3 year process, therefore, it was necessary to
implement a short term solution that would not restrict the possible long term
options.
The Pwllheli Marina Berth Holders' Association Representative noted that it should be considered to increase the length of the Crib Groyne gradually in ... view the full minutes text for item 7
7 UPDATE ON HARBOUR MANAGEMENT MATTERS PDF 163 KB
To submit a report by the Maritime and Country Parks Officer.
Additional documents:
Minutes:
The Maritime and Country Parks Officer guided the members through the
report, drawing attention to the following main points:
·
That the Consultative
Committee was statutory and that the membership was in accordance with Section
6(2) (a-j) of the Porthmadog Harbour Revision Order.
A request had been received by Porthmadog Rowing Club
to have representation on the Consultative Committee. It was noted that it had
been explained to them that Dr John Jones-Morris represented leisure interests
on the Consultative Committee and matters could be referred to him to be
considered.
·
There were 135 boats on
annual moorings in Porthmadog Harbour in 2017
compared with 129 in 2016. It was encouraging to see a small increase in the
numbers this year.
·
That the Government's
Department for Transport had published modifications to the Ports' Safety Code
in November 2016. Copies of the new code had been circulated to all Members of
the Consultative Committee and copies could also be obtained on the Maritime
and Coastguard Agency’s website.
·
Between 19 and 21
September 2017, a thorough inspection was carried out by the Coastguard
Agency's auditors on the current safety arrangements and systems of Gwynedd
municipal harbours in order to ensure compliance with the Ports' Safety Code.
The initial opinion of the auditors was that the Council complied with the
requirements in general but that some aspects relating to recording duties and
noting the Duty Holder needed to be amended. The auditors visited the harbours
of Aberdyfi, Porthmadog and
Pwllheli during the audit. In regards to Porthmadog Harbour, the observations received were
excellent and no problems had become apparent. The Harbour Master and the
Senior Harbours Officer were thanked for their work in ensuring that the appropriate
documentation was in place.
·
A written report had
been received by the auditors on the day of the meeting outlining matters
requiring attention from the Council. It was explained that the Council had a
specific period to revise its arrangements and the Coastguard Agency would
revisit the service within 12 months of submitting the report when
recommendations submitted in the report would be expected to be actioned. It
was noted that copies of the report would be circulated to members.
·
Following a discussion
with the auditors, it was agreed in principle that it would be beneficial for
the date of the second visit to coincide with the date of the Harbour
Consultative Committee. It was suggested to the auditors that it could be
beneficial for the auditors to attend a meeting of the Porthmadog
Harbour Consultative Committee and invite representatives from the Consultative
Committees of Aberdyfi, Barmouth
and Pwllheli to the meeting in October 2018.
·
No observations had been
received relating to the Marine Safety Code since the previous meeting.
· A detailed inspection was conducted by Trinity House Lighthouse Authority inspectors on 2 August 2017. Compared with previous reports, the 2017 report confirmed a further improvement in the condition and locations of Porthmadog Harbour's Navigation Aids. A chart displaying the current locations of the navigation aids ... view the full minutes text for item 7