Mott MacDonald Mitigation Response

Our ref: JLS/KPD/TB/MDK/60077/3 Your ref:

David Crowe Plant Hire Ltd Sunny Bank East Foxdale Isle of Man

Spring Bank House 33 Stamford Street Altrincham Cheshire WA14 1ES

Telephone 0161 927 7445 Fax 0161 926 8670 Web www.mottmac.com

16 March 2001

For the attention of Mr David Crowe:

Dear Sir

PROPOSED LANDSPREADING AT EARLY

Following the query from Isle of Man’s planning officer dated 2nd March 2001 regarding the above proposal, we are pleased to provide the following response:-

There are a number of mitigation works that should be adopted to minimize the potential risk of damage to the mire habitat.

As stated in the report, the landspreading activities should be restricted to the upper slopes. Protective fencing (eg timber post and rail) will be needed to demark the works area and prevent accidental damage to the mire habitat through plant access or storage of materials.

The working area should be set away from the edge of the mire to develop a buffer zone between the mire and the working area. This should be of a sufficient distance (minimum of 2m) to reduce the potential dust pollution from the working area. In addition a small temporary bund should be constructed along the perimeter again to reduce dust contamination from potentially calcareous material – cements and so on. The temporary bund could be removed and the slope regraded on completion of the land spreading.

Surface water run off from the landspreading area should be diverted away from the mire area through the construction of a small perimeter drain. The drains should be carefully designed to minimise the risk of modifying the existing ground water levels in the vicinity mire causing the mire to dry out. The surface water drain could discharge to the adjacent watercourse subject to IOM government approval. Suspended solids should be settled out through settlement ponds before discharging into the watercourse.

As the waste proposed is inert fill, it should not generate significant quantities of leachate that would be detrimental to the mire habitat. Capping of the area with impermeable material will prevent egress of water into the fill and further reduce the risk of the generation of leachate that may impact on the mire.

If you have any queries please do not hesitate to contact the undersigned or in his absence Mr T. Blower.

Yours faithfully, For Mott MacDonald

M.H. de Kretser Cc Joe McLoughlin, Heritage Homes

MIRE HABITAT TO BE PROTECTED