Where can I find references regarding drum sampling?
Several references are available on drum sampling:
Chapter Nine of SW-846 (see page NINE-73) includes guidance on sampling drums and similar containers. The following EPA documents also include information on drum sampling:
USEPA. 1994. "Drum Sampling." Environmental Response Team SOP #2009, Revision #0.0. Edison, NJ. www.epaosc.org/sites/2107/files/2009-R00.pdf.
USEPA. 2015. Laboratory Operations and Quality Assurance Manual. www.epa.gov/sites/production/files/2015-06/documents/asb-loqam_0.pdf. Region 4, Science and Ecosystem Support Division. Athens, GA.
Also, the ASTM (www.astm.org) has published several guides that include information on drum sampling including:
ASTM D 5679-95a (2012). Standard Practice for Sampling Consolidated Solids in Drums or Similar Containers. West Conshohocken, PA.
ASTM D 5680-14 (2014) Standard Practice for Sampling Unconsolidated Solids in Drums or Similar Containers. West Conshohocken, PA.
ASTM D 5743-97 (2013). Standard Practice for Sampling Single or Multilayered Liquids, With or Without Solids, in Drums or Similar Containers. West Conshohocken, PA.
ASTM D 6063-11 (2011). Standard Guide for Sampling of Drums and Similar Containers by Field Personnel. West Conshohocken, PA.
ASTM D 6232-08 (2008). Standard Guide for Selection of Sampling Equipment for Waste and Contaminated Media Data Collection Activities. West Conshohocken, PA.
See also RCRA Waste Sampling Draft Technical Guidance, www.epa.gov/sites/production/files/2015-10/documents/rwsdtg_0.pdf.