The ARIA landmarks as presented by the Neoportal are very useful. However, multiple "navigation" landmarks are present and are not distinguished. Landmarks should be meaningfully and uniquely labeled so the user can tell them apart and can tell which navigation landmark they want to move to. For example of what a screen-reader user will see currently, see the attached image unLabeledLandmarks.png.
The ARIA landmarks can be easily labelled by adding an aria-label attribute to each element that has the role="navigation" attribute.
<h1 class="skip" id="sitetabs" role="navigation" aria-label="Worksites begin here">Worksites begin here</h1>