The Commission shall establish a list of best management practices for which funding is available from the Department and/or other local, state or federal agencies. Should any person be required under this chapter or regulations promulgated hereunder to undertake any of the activities for which funding is available and fail to receive funding due to insufficient funds available through those local, state or federal agencies, the Commission shall not begin any enforcement action under § 2280 of this title until such funding becomes available; provided, however, that the owner-operator must accept the first available funding after a period of 3 years, dated from nutrient management plan acceptance.