The length of time excavations are kept open will be minimised to reduce the potential for dewatering
The filtration of all run-off using mitigation measures such as straw bales, check dams, filter strips, silt fences or settling tanks/ponds prior to release, or the discharge of clean surface water run-off to land to allow natural percolation wherever possible (no discharge of water would take place directly into a watercourse)
The separate storage of topsoil and excavated materials, to prevent mixing of sub- soil and topsoil, thus improving reinstatement
The minimisation of excavation volumes and disturbance to the surrounding areas, together with the replacement of any soils inadvertently disturbed during excavations in general accordance with their original structure and location
The setting of vehicular speeds along the construction access routes to minimise soil trafficking
The use of pollution control measures to reduce sediment run-off entering any watercourses or surface water drainage systems during construction activities, with reference to the relevant EA Pollution Prevention Guidelines.
Regular cleaning and maintenance of plant to ensure potential pollutants are not released e.g. from fuel spills and leaks
The maintenance of a register of fuel volumes stored on site, and the location of fuel storage and refuelling points in designated areas, a minimum of 20m from watercourses
Regular inspection of facilities storing hazardous materials, which will be locked and made secure when not in use (see Section 8 above)
Best environmental practices would be followed, reducing the potential for release of contaminants to ground to a minimal level. Appropriate spill and leak containment systems would be incorporated into the construction procedures to ensure no uncontrolled releases of contaminants occur
Any materials to be removed from site would be subject to the appropriate waste management licensing regulations. Care would be taken to manage any stockpiles of materials in order to reduce runoff from exposed surfaces.
Outline Code of Construction Practice . Version 3.
Page 39
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