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2.6.2 IPCC emissions<br />

The CO2 factors used are in accordance with the list of energy carriers used in the Netherlands and<br />

the standard CO2 emission factors [ref 87: Vreuls, 2004].<br />

2.7 Substance profiles<br />

The VOC and PAH profiles have been established by (tables 2.7A through 2.7C) [ref 55: VROM, 1993].<br />

Table 2.8 gives the share of PM2,5 in the PM10-emissions.<br />

2.8 Regionalization<br />

The sections of inland waterways and their lengths originate from the NWB (section on main<br />

waterways). This database is maintained by the Transport Research Centre. Statistics Netherlands<br />

(via StatLine) provi<strong>de</strong>s the data for the number and type of inland waterway vessels and also for the<br />

numbers of recreational boats (motorboats and sailboats). The data on the numbers of mooring places<br />

in yacht harbours originate from the Kennis- en Informatiecentrum Recreatie 19 (KIR).<br />

Table 2C Regionalization of emissions from inland navigation<br />

Allocation parameter<br />

Inland shipping (on shipping<br />

routes) combustion, leaching,<br />

evaporation, spills<br />

Inland shipping (in harbours)<br />

leaching, spills<br />

Recreational traffic (on shipping<br />

routes) combustion, leaching,<br />

evaporation, spills<br />

Recreational traffic (in harbours)<br />

leaching, spills<br />

2.9 Uncertainties<br />

Update<br />

frequency<br />

Vessel /tonne-kilometre per shipping route Every three years, most<br />

section (<strong>de</strong>pending on cargo)<br />

recently in 2006 (data from<br />

2004)<br />

Number of vessels entering harbours per Every three years, most<br />

year<br />

recently in 2005 (data from<br />

2003)<br />

Vessel kilometres per shipping route section Every three years, most<br />

recently in 2005 (data from<br />

2003)<br />

Number of moorings at yacht harbours Every three years, most<br />

recently in 2005 (data from<br />

2003)<br />

The uncertainties in emission estimates have been <strong>de</strong>rived from the uncertainty in activity data and<br />

emission factors in accordance with the rule that the uncertainty of the product of two uncertain factors<br />

is equal to the greatest uncertainty of one of the two factors, therefore:<br />

- A * A = A<br />

- A * B = B<br />

- B * A = B<br />

- C * C = C<br />

- A * D = D<br />

etc.<br />

The results are shown in Appendix 1.<br />

19 Expertise Centre on Leisure and Recreation<br />

49

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