2. Reasonable efforts have been made to prevent removal of the child from his home and there are no alternatives less drastic than removal of the child from his home which could reasonably protect the child’s life or health pending a final hearing on the petition. The alternatives less drastic than removal may include but not be limited to the provision of medical, educational, psychiatric, psychological, homemaking or other similar services to the child or family or the issuance of a preliminary protective order pursuant to § 16.1-253. If the petitioner fails to obtain an emergency removal order within four hours of taking custody of the child, the affidavit or sworn testimony before the judge or intake officer shall state the reasons therefor. When a child is removed from his home and there is no reasonable opportunity to provide preventive services, reasonable efforts to prevent removal shall be deemed to have been made. The petitioner shall not be required by the court to make reasonable efforts to prevent removal of the child from his home if the court finds that (i) the residual parental rights of the parent regarding a sibling of the child have previously been involuntarily terminated; (ii) the parent has been convicted of an offense under the laws of the Commonwealth or a substantially similar law of any other state, the United States, or any foreign jurisdiction that constitutes murder or voluntary manslaughter, or a felony attempt, conspiracy, or solicitation to commit any such offense, if the victim of the offense was a child of the parent, a child with whom the parent resided at the time such offense occurred, or the other parent of the child; (iii) the parent has been convicted of an offense under the laws of the Commonwealth or a substantially similar law of any other state, the United States, or any foreign jurisdiction that constitutes felony assault resulting in serious bodily injury or felony bodily wounding resulting in serious bodily injury or felony sexual assault, if the victim of the offense was a child of the parent or a child with whom the parent resided at the time of such offense; or (iv) on the basis of clear and convincing evidence, the parent has subjected any child to aggravated circumstances or abandoned a child under circumstances that would justify the termination of residual parental rights pursuant to subsection D of § 16.1-283. As used in this section: “Aggravated circumstances” means torture, chronic or severe abuse, or chronic or severe sexual abuse, if the victim of such conduct was a child of the parent or child with whom the parent resided at the time such conduct occurred, including the failure to protect such a child from such conduct, which conduct or failure to protect (i) evinces a wanton or depraved indifference to human life or (ii) has resulted in the death of such a child or in serious bodily injury to such a child. “Chronic abuse” or “chronic sexual abuse” means recurring acts of physical abuse that place the child’s health, safety and well-being at risk. “Serious bodily injury” means bodily injury that involves substantial risk of death, extreme physical pain, protracted and obvious disfigurement, or protracted loss or impairment of the function of a bodily member, organ or mental faculty. “Severe abuse” or “severe sexual abuse” may include an act or omission that occurred only once but otherwise meets the definition of “aggravated circumstances.”