change contact email form

Want to change only the contact email form email address.  I found in header.inc.php the following:

$site['email']             = email@email.com;
$site['email_notify']      = email@email.com;
$site['bugReportMail']     = "email@email.com;

Which one is specifically for that contact form?  Or is there a way to set the contact form to a different email address?