The specifications for the construction of a septic tank shall be those published in the most recent edition of “Construction Standards for Private Sewage Facilities,” issued by the Texas Department of Health Resources, as it may be amended from time to time. Those standards, currently Rule Numbers 301.79.03. 001-003 of the Texas Department of Health Resources, are promulgated under the authority of Texas Civil Statutes, Art. 4477-1 (1976). (Ord. Nos. 7821; 15655)