153 After the ducting is installed the trench will be backfilled and material replaced wherever possible in the same order it was excavated. Where possible, open-cut watercourse crossings, including backfill and temporary reinstatement, will be completed in one day. The cable will then be pulled through the ducting as a separate operation.


154


The banks will then be fully reinstated to their original profile using best practice techniques, including stabilisation techniques such as use of geotextile matting. Such stabilisation techniques are usually very successful in ensuring future bank stability and as such no future monitoring is anticipated. The specific reinstatement techniques, including stabilisation techniques, will be outlined in the Specific Method Statement for each watercourse crossing.


11.5.3 Environmental Protection 155


The following measures will be implemented to minimise environmental impacts:


Periods of low flow will be chosen wherever practicable. This will result in a quicker deposition from the water column of any sediment released


All watercourses and ditches will be maintained in effective working condition across the full working width for the duration of the works, and will be restored to a condition at least as good as before the commencement of the works


Construction methods will take into consideration plant and animal life, upstream and downstream of the crossing, and will be in accordance with the requirements of the Landscaping Management Scheme(s) and Ecological Management Plan(s) provided for by DCO Requirements 19 and 26, respectively


Ecological surveys and investigations will be completed in advance of any construction work taking place. Investigations should consider optimum timings for works (e.g. where possible avoiding fish spawning times). The necessary mitigation for notable species (including otter and water vole) discovered during the surveys will be agreed before construction takes place as agreed through the Ecological Management Plan(s) provided for by DCO Requirement 26


Bank-side vegetation would be retained, with trees and shrubs coppiced rather than grubbed-out where practicable. Any habitat removal required along banks would, where practicable, be restricted to the minimum working width of 35m


Any aquatic vegetation removed during the process would be retained on the adjacent banks for 24 hours to allow the aquatic fauna to return to the water


Outline Code of Construction Practice. Version 3. Page 48


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