Cullumber Oil Company acquired property rights to search for natural resources on land that it is convinced has oil reserves, for $15,413,020. The contract requires that Cullumber restore the property to a status usable for a park after drilling and extraction are complete. The estimated cost of this restoration is $2,361.000. Cullumber incurs exploration costs of $1,315,000 and intangible development costs of $1,546,000. Geological surveys suggest that approximately 1,113,000 barrels of oil can be extracted from the site. In 2025, Cullumber extracts 249,000 barrels of oil. (a) What is the depletion base for this location for Cullumber Oil? $ eTextbook and Media List of Accounts