Sediment toxicity
(ee) Sediment toxicity as applied to BAT effluent limitations and NSPS for drilling fluids and drill cuttings refers to EPA Method 1644: Method for Conducting a Sediment Toxicity Test with Leptocheirus plumulosus and Non-Aqueous Drilling Fluids or Synthetic-Based Drilling Muds and sediment preparation procedures specified in EPA Method 1646. EPA Method 1644 is published in Analytic Methods for the Oil and Gas Extraction Point Source Category, (see paragraph (uu) of this section) and EPA Method 1646 is published as an appendix to subpart A of this part.