Should soil analytical results be reported on a dry or wet weight basis?
All soil analytical results should be reported on a dry weight basis. Top 2. Are there required/recommended field protocols for sample collection (of soils or groundwater)and/or sample preparation? For example, when collecting a groundwater sample for dissolved metals, should the sample be field-filtered? If there are required protocols, could you provide a reference to them? Yes, there are protocols for sample collection and sample preparation. For example, as of May 1, 2007, soils being analyzed for volatile organic compounds (VOCs) may need to be collected by U.S. EPA SW-846 Method 5035A. Please see the IDEM Office of Land Quality document Supplemental Guidance for Sampling Soil and Waste Samples for Volatile Organic Compounds (VOCs) released March 2, 2007 for more information. Sample collection can be program/project specific and IDEM recommends that sample collection, preservation procedures, and analyses be approved by the project manager. Additional guidance is available on IDEM
