Vegetable Summer Rolls

Name: Vegetable Summer Rolls
Ingredients: 1/2 cup rice wine vinegar; 2 tablespoons sugar; 2 teaspoons salt, divided; 1 small seedless cucumber, peeled; 1 medium carrot, peeled; 1 small jicama, peeled; 1 large green papaya, peeled, halved length-wise and seeded; 1 teaspoon fresh lemon juice; 2 teaspoons fresh cilantro; 1 teaspoon canola oil; 1 ounce rice vermicelli noodles; 6 (8 1/2-inch) dried rice spring roll wrappers; 8 leaves Bibb lettuce, ribs removed, torn into small pieces; Peanut sauce, recipe follows