Forthbank Wind Energy Development - Partnerships for Renewables

Forthbank Wind Energy Development
7.4.14 It is expected that each turbine will generate up to eight oversized abnormal delivery loads
arriving at the site. Based upon a total of four turbines this equates to around 32 deliveries
which would be made on extendable trailer turbine delivery vehicles.
Construction Traffic Effects on Base Traffic Flows
7.4.15 Table 7.5 below summarises the increase in traffic flow during the busiest month of the
construction programme on the A907 and Forth Crescent compared with existing baseline 5-day
average daily (24 hour) two-way traffic flows.
Table 7.5 Construction Traffic Flows (2010, two-way flows)
Location
5 Day Average
Flow (24 Hour)
Maximum
Average Daily
Construction
Traffic
Percentage
Increase
Significance
A907 (west of Gartarry Roundabout) 15,353 50 0.3% Not Significant
A907 (Clackmannan Road) 18,656 50 0.3% Not Significant
Forth Crescent 692 50 7.2% Not Significant
7.4.16 Based upon the environmental impact significance criteria set out previously in paragraphs 7.4.7
and 7.4.8 the temporary construction traffic increases are not significant increases.
Furthermore, as noted previously in Section 7.3 the traffic increases tabulated above are a
worst-case scenario as it assumes that all traffic will travel to and from the site on the same
route.
7.4.17 Month four of construction is predicted to have the highest concentration of daily construction
traffic flows. Anticipated construction traffic levels in the remaining five months of the
construction programme are likely to be lower. Therefore the calculated traffic increases are
short-term and temporary.
Potential Environmental Effects of Construction Traffic
7.4.18 The guidelines for the Environment Assessment of Road Traffic identifies the following potential
environmental effects:
• Noise;
The existing and forecast traffic noise levels as influenced by the volume of traffic,
percentage of heavy goods, and the distance from source.
• Vibration;
Possible damage to property and airborne vibration caused by an increase in lorry
traffic, especially on poor quality road surfaces.
• Visual Impact;
Obstruction and visual intrusion as a result of a blocking of views or the subjective
impact by traffic.
November 2010 Chapter 7 Page 8
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