Presampling - Field Sampling: Principles and Practices in Environmental Analysis - page 58

The place in which the activity takes place must be on the map, along with date and time
and the name of the person leading the activity. It can be separate from the project
notebook during the activity, but either the original or a copy must be permanently
attached to the project notebook in the appropriate location when the activity is
completed. Each map should have its own entry in the table of contents. Alternately, a
separate page listing just the location of maps can be in the table of contents. Data
recorded on a map can subsequently be entered into a computer either manually or by
scanning the information. Once in a digital form GIS can be used to display and follow
sampling and other field activity.
An example of a simple map of a field to be sampled is shown in Figure 3.2, and
includes a symbol showing which direction is north (which must always be present). The
map must also show some distinct characteristic that allows the reader to specifically
locate it. In Figure 3.2 the roads specifically locate the position of the fields of interest,
provided, of course, that we know the state in which these roads are located. Additional
locators such as longitude and latitude can be included on the map and are recommended.
These are useful especially when using GPS for locating the
FIGURE 3.2 Simple map of three fields (12a, 12b, and 12c) to be sampled.
fields and sample sites and can be entered from the GPS unit during sampling.
A cross-sectional map of soil depths and the depths of various layers (see Figure 3.3) is
also valuable to have. Such a map is helpful in developing