In a small saucepan, bring water and salt to a boil and blanch green beans just until bright green and tender-crisp, about 2 minutes. Drain green beans and rinse under cold water for 1 to 2 minutes.
Put the vinaigrette ingredients into a container with a lid, shake well. Refrigerate unused portion.
Arrange around a platter in separate mounds, the tomatoes, green beans, lettuce, hard-boiled egg, cucumbers and olives.
Place sardines in the middle of the platter and garnish with fresh herbs.
Drizzle salad with the Anchovy Vinaigrette and season with salt and pepper to taste.