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Module 5 Marine Licensing Assignment

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You will need to explain MEO Specified Marine Licensing Enforcement Powers, as per the Marine and Coastal Access Act 2009 for the following scenario.

Do not copy large pieces of legislation verbatim, answer in your own words to show an understanding of the legislation.

Scenario:

You are undertaking an inspection of a construction marine licence for maintenance of existing works. The works are for a quay wall, where the pointing has eroded and come loose. Consequently some of the brickwork has fallen out. The bricks will be replaced and repointing completed where required. Some of the works is entirely below the water line and a limpet cofferdam will be used to access works below the water.

Basic Methodology

Jet washing of dock wall

The dock wall will be jet washed to remove loose material and marine growth. The duration and jet pressure will be controlled in order not to remove stable mortar. Any loose bricks will be removed. All collected waste will be removed from site and disposed of to a suitably licensed facility.

Installation of Cofferdam and Scaffolding

Scaffolding: A scaffold platform will be set up with a boarded out walkway below water line. The scaffold will be hung from the wall and propped at lower levels. Any fixing will be temporary with all holes filled to match original surfacing where possible.

Cofferdam: A limpet cofferdam (a steel suction device) will be lowered onto the wall from the landside in order to water-proof the wall during the works. It will not exceed 2 metres by 2 metres. No piling or invasive construction is required to install the device.

Repairs to dock wall

Three defects in the existing dock wall are to be repaired. The defects are voids up to 500mm deep where there has been significant loss of masonry. The two defects above the waterline are to have a brick facing placed with the void behind filled with a non-shrink grout. The defect below the waterline will have temporary formwork secured to the front face and an underwater concrete repair placed to fill the void. Grout pours will be closely monitored to ensure that there is no spillage of excess volumes.

The following are the conditions from the Marine Licence:

Condition 1

Only coatings and treatments can be used that are suitable for use in the marine environment.

Reason:

To ensure hazardous chemicals that may be toxic, persistent or bioaccumulative are not released into the marine environment. 

Condition 2

Bunding and/or storage facilities must be installed to contain and prevent the release of fuel, oils, and chemicals associated with plant, refuelling and construction equipment, into the marine environment. Secondary containment must be used with a capacity of no less than 110% of the container's storage capacity.

Reason:

To minimise the risk of marine pollution incidents.

Condition 3

Waste concrete, slurry or wash water from concrete, cement or grouting activities must not be discharged, intentionally or unintentionally, into the marine environment. Concrete, cement or grout mixing and washing areas must be contained and sited at least 10 metres from any watercourse or surface water drain.

Reason:

To avoid damage to the marine environment by concrete wash water contamination which is highly alkaline and contains high levels of suspended sediment.

Assignment:

Which of your powers can you use to inspect the licence and for which condition could you specifically use them?