How concerned should I be with an aortic valve area of 1.09 and mild left ventricular hypertrophy, left axis deviation and t wave abnormality?

Sounds like . You have moderate to severe aortic valve stenosis. You need to see a cardiologist who can determine other parameters of severity, such as pressure gradient across the valve and velocity of blood flow through the valve. If you have symptoms of fainting or congestive heart failure, it is more serious. Sometimes, the valve can be replaced without chest surgery.
Moderate AS. You have moderate aortic stenosis -- you don't have to be concerned but you should monitor this along with your cardiologist.