(a) You may use pit privies and portable toilets in remote camping areas. You must ensure that the pit privies and portable toilets are:(1) Maintained in good repair and kept clean at all times;(2) Constructed and maintained according to manufacturer designs and standards set forth by the Department of State Health Services, General Sanitation Division;(3) Maintained to prevent access by flies and animals to the contents contained within, to prevent fly breeding, and to prevent contamination of any water supply;(4) Equipped with toilet paper at all times; and(5) Serviced for the disposal of human excreta that meet regulations set forth by the Texas Commission on Environmental Quality.(b) If the camp site is not provided with pit privies or other portable toilets, you must:(1) Comply with the requirements of §748.3861 of this title (relating to What are the requirements for toilet facilities during overnight camping excursions?); and(2) Have a readily available supply of clean earth backfill or other disposal methods that meet regulations set forth by the Texas Commission on Environmental Quality for the disposal of human excreta in these areas.