Technical Bulletin No. 0305: Investigation of Factors Affecting BOD Measurement and Experience with the 1-Day BOD Test

  The required routine measurement of BOD and suspended solids concentration of final effluents is an integral part of almost every NPDES permit. These measurements are time consuming and steps taken to reduce the time required for their conduct within the confines of approved methods is of benefit. Required changes in sample handling procedures during the collection of samples involving refrigerated storage during composite sampling are also occurring. The impact of this procedural change on measured effluent characteristics is not known.