N.M. Code R. § 19.8.20.2042
CONSTRUCTION REQUIREMENTS:
B. Following grading of the coal processing waste bank the site shall be covered with a minimum of 4 feet of the best available non-toxic and non-combustible material in accordance with 19.8.20.2056 NMAC, topdressed in accordance with 19.8.20.2007 NMAC and in a manner that does not impede flow from subdrainage systems. The coal processing waste bank shall be revegetated in accordance with 19.8.20.2060 through 2066 NMAC. The director may allow less than 4 feet of cover material based on physical and chemical analyses which show that the requirements of 19.8.20.2060 through 2066 NMAC will be met.
[11-29-97; 19.8.20.2042 NMAC - Rn, 19 NMAC 8.2.20.2042, 9-29-2000]