Place all chopped vegetables except lettuce in a bowl and mix.
Quickly dip rice paper wrappers in a bowl of steaming hot water and lay on a flat surface.
Place 1/6 of the vegetable mixture in the center of a wrapper and add one lettuce leaf on top. Roll up on one side and tuck in both edges and roll up until it is sealed.
Continue with remaining wrappers and spring roll ingredients.
After rolls are made, make the dipping sauce.
For the Dipping Sauce:
Place all ingredients in a food processor except oil and water.
Process the carrot mixture until smooth. With machine running, add canola oil and water through feed tube in a slow, steady stream until sauce is well blended.