On July 31, 2009, EPA published a direct final action granting a petition submitted by WRB Refining, LLC Company to exclude (or delist) the thermal desorber residual solids with Hazardous Waste Numbers: F037, F038, K048, K049, K050, and K051. In the July 31, 2009 rule, EPA inadvertently recorded the arsenic delisting level as 0.0129 mg/l. The arsenic delisting limit should be 1.29 mg/l. We are making this correction in this document.