(IDAHO POWER - BOISE OPERATIONS CENTER SPILL CONTAINMENT PROJECT) Grading permit to excavate, grade and compact site earth materials for installation of a 5,000-gallon oil and water separator and butterfly valve to provide additional capacity and separation for oils and water in the event of an accidental spill of petroleum products. Must follow grading and drainage plans as approved by the Public Works Department. No site utilities are included in this scope of work. No buildings are to be constructed or installed under this permit.//10/20/10 leg