Access the relevant website and a step-by-step guide for using the website.

WHAT IS THE PSD PROCESS?

WHAT IS THE DAT?

IDENTIFY AQRV

WHAT IS THE CL FOR THE AQRV?

WHAT IS DEPOSITION?

IS DEPOSITION INCREASING OR DECREASING?

WHAT IS EXCEEDANCE?

WHERE ARE CL EXCEEDANCES?

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Step-by-step instructions

Click continue;
Click skip to bypass the tutorial;
Select “Areas” on the left;
Use the dropdown menu to select the type of area you wish to display;
1. E.g., Federal Administrative area;
2. If prompted, select the agency of interest
On the upper right (map controls) Nationwide CL & EXC Map Layers, use the dropdown menu to select the ecosystem component of interest (Aquatic, Lichens, Trees);
For lichens, for example,
1. Select N or S deposition;
2. Then select the combination of the lichen metric (e/g/. total species richess) and the level of resolution in the Exceedance map (Magnitude of EXC +/-) gives the highest resolution
Zoom in (using + button in upper right) to view the area of interest;
Click confidence rating button in lower right to view the level of certainty in the Exceedance.