(a) The department shall inventory, classify, and maintain a log according to the degree of hazard, proximity to public roads, age, and current use of all existing, inactive, or abandoned quarries that have a pit perimeter that is in hazardous proximity to a public road, and those pits that are in an unacceptable unsafe location.
(b) The department shall keep a current log of all quarries that are required to be inventoried under Subsection (a) of this section, including such quarries and pits for which initial operations begin after June 30, 1991.