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Q480. How should the daily oil throughput for onshore production storage tanks be determined to compare with the threshold of 10 barrels a day in 98.233.j(1)?

A480. It is EPA’s intent that the 10 barrels per day of oil throughput referenced in 98.233(j) be based on annual average daily throughput.  On an annual basis, the owner/operator must evaluate whether individual well pad produced hydrocarbon liquids falls above or below the equipment threshold and use monitoring methods appropriately.  For less than 10 barrels per day of oil throughput on an annual average daily basis, the reporter must determine if 98.233(j)(5) applies. 

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