Starting up; early stages - Introduction to Environmental Impact Assessment - page 108

environmental elements separately, it is also important to understand the interaction
between them and the functional relationships involved; for instance, flora will be
affected by air and water quality, and fauna will be affected by flora. This will facilitate
prediction. As with most aspects of the EIA process, establishing the baseline is not a
“one-off” activity. Studies will move from broad-brush to more detailed and
Figure 4.5 Materials flow chart for a
petroleum refinery. ( Source: UNEP
1981.)