OAR 340-122-0325: Cleanup Rules for Leaking Petroleum UST Systems: Evaluation of Matrix Cleanup Level

(1) In order to determine a specific Matrix cleanup level, the site must first be evaluated by: (a) Assigning a numerical score to each of the five site-specific parameters in OAR 340-122-0330(1)–(5); and (b) Totaling the parameter scores to arrive at the Matrix Score. (2) The Matrix Score must then be used to select the appropriate numeric soil cleanup standard as specified in OAR 340-122-0335.