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BOC Immingham Dissolved Acetylene Project Environmental Statement: Vol. 2 Main Text
12.15 As a result of the Scoping Opinion 4 :
� a framework CTMP has been prepared and is presented in Appendix 12B (this will be
amended and updated in due course by the Construction Contractor); and
� BOC met with representatives from the HA on 15 th July 2011 to discuss the issues that the
HA had raised in the Scoping Opinion 4 . The HA’s primary concern related to the movement of
large amounts of hazardous waste via the strategic road network. At the meeting between
BOC and HA it was noted that:
- BOC has not had any of its own vehicles recorded in incidents resulting in road closures;
and
- in the event of an offsite incident involving acetylene or carbide, the HA’s tactical
diversion route strategy will be deployed (as appropriate).
Other Information/ Data Sources
12.16 The assessment is based on the data and information presented in the description of the
Dissolved Acetylene Project (Chapter 3). In addition, C Spencers 88 provided some indicative
construction workforce and transport data for the first phase of construction works (preparation of
the site and construction of site infrastructure). BOC supplied construction workforce and transport
data for the second phase (process plant fit out, testing and commissioning).
12.17 Nationwide Data Collection was commissioned to undertake Manual Classified turning Counts
(MCCs) at six sites, Automatic Traffic Counts (ATCs) at three locations and queue length surveys
during May 2011.
12.18 The Traffic Flow Data System (TRADS) was used to obtain traffic flow information from England’s
motorway and major trunk road network.
Assessment Methodology
General Method
12.19 The impacts of development traffic have been assessed with regard to the following
characteristics:
� volume of traffic;
� traffic speeds and operational characteristics, and
� traffic composition, the percentage of HGVs.
12.20 The perception of changes in traffic by people, and the impact of traffic changes on various
ecological systems will vary according to such factors as:
� existing traffic levels;
� location of traffic movements;
� time of day;
� temporal and seasonal variation of traffic;
� design and layout of the road;
� land-use activities adjacent to the route; and
� ambient conditions of adjacent land-uses.
12.21 Impacts have been assessed by undertaking quantitative analysis of traffic flow changes, and
qualitative analysis of the potential significance of changes. The methodology used in the impact
of each aspect is described in more detail in the subsequent impact assessment sections.
5100935.404 Environmental Statement August 2011 208