Sec. 91.1131. RISK ASSESSMENT STANDARDS. (a) The commission by rule may establish risk assessment as the guide for: (1) conducting site investigations and environmental assessments; and (2) controlling and cleaning up oil and gas wastes and other substances and materials. (b) Rules adopted under this section must provide for: (1) determining whether an actual or potential risk exists at a site; (2) screening contaminants at the site to identify those that pose a risk; (3) developing cleanup standards based on contamination levels that are protective of human health and the environment; and (4) establishing a reporting mechanism for informing the commission regarding specific remediation activities. Added by Acts 2001, 77th Leg., ch. 1233, Sec. 32, eff. Sept. 1, 2001.