Shelby hired Evan to drill a well on her property for $3,000. They both thought the soil and subsoil were normal for the area, but after he started drilling, Evan found a layer of rock that required him to purchase a special drill and required an extra ten hours of work. Evan demanded an extra $1,000 to complete the job. Discuss whether Shelby is liable for the additional $1,000. Be sure to include in your discussion the elements of this particular contract and whether or not, based on the facts, those elements can change. Also, cite any general rules and/or exceptions that may apply. Also, you must discuss what remedies are available to each party if the other breached?