Update Behavior Not Updating

I've attached my form. I'm just testing a few of the form fields, lines 639-694.

The form is showing the values from the database table, but changes aren't being stored. A sample text label and input looks like this:

<label class="form-label mb-0">Name or Description of Site:</label>
<input name="si_site" type="text" class="form-control" value="<?php echo($rsAppl->getColumnVal("si_site")); ?>">

And my select list looks like this:

<label class="form-label mb-0">Site Class:</label>
<select name="si_class" class="form-control">
<option value="<?php echo($rsAppl->getColumnVal("si_class")); ?>" selected><?php echo($rsAppl->getColumnVal("si_class")); ?> </option>
<option name="default">select your site class</option>
<option value="Residential">Residential </option>
<option value="Commercial">Commercial </option>
<option value="Industrial">Industrial </option>
<option value="Construction">Construction </option>
<option id="admOption" value="Other" name="Other">Other </option>
</select>