Site restoration fund deduction for petroleum deposits becomes taxable on withdrawal or on premature asset transfer. An assessee carrying on prospecting, extracting, or producing petroleum or natural gas under a Central Government agreement may deduct deposits to a special account or site restoration account as computed under Schedule X. Withdrawals or transfers from that account are taxable in the year made, and if an asset acquired under the scheme is sold within eight years, the cost portion tied to the earlier deduction is treated as business income in the year of sale.