Document ID: chunk:federal_register_of_legislation:F2013C00288:reg:1850:p111
Version: federal_register_of_legislation:F2013C00288
Segment Type: reg
Provision Reference: reg 1850 (pt 111/117)
Character Range: 681664–685002

in shipments
 record of holding times and a comparison with method specifications
 analytical methods used
 laboratory accreditation for analytical methods used
     laboratory performance in inter-laboratory trials for the analytical methods used, where available
 description of surrogates and spikes used
 percent recoveries of spikes and surrogates
 instrument detection limit
 method detection limits
 matrix or practical quantification limits
 standard solution results
 reference sample results
 reference check sample results
 daily check sample results
 laboratory duplicate results
 laboratory blank results
 laboratory standard charts

QA/QC data evaluation
     evaluation of all QA/QC information listed above against the stated DQOs including a discussion of:
         -                    documentation completeness
         -                    data completeness
         -                    data comparability
         -                    data representativeness
         -                    precision and accuracy for both sampling and analysis for each analyte in each environmental matrix informing data users of the level of reliability  or qualitative value of the data
     results of data comparability checks to assess bias that may arise from various sources, including:
         -                    collection and analysis of samples by different personnel
         -                    use of different methodologies
         -                    collection and analysis by the same personnel using the same methods but at different times
         -                    spatial and temporal changes (because of environmental dynamics)
 relative percent differences for intra- and inter-laboratory duplicates.

    20              Appendix D: Example data presentation on scale drawings and borehole logs

Figure 2. Example site layout overlay
Figure 3. Example Results – v – Site Features
Figure 4. Example cross-section showing contaminant concentrations through soil profile
Figure 5. Example results from excavation assessment

Figure 6. Example site plan with analyte concentration contours
Figure 7. Example Borehole Log – B68
Figure 8. Example Borehole Log – B69

Figure 9. Example Borehole Log – W60 (sheet 1 of 2)
Figure 10. Example Borehole Log – W60 (sheet 2 of 2)

    21              Appendix E:  Dioxins and dioxin-like compounds

21.1          Background
Dioxins and dioxin-like compounds are chlorinated organic pollutants formed as trace amounts of undesired impurities or by-products in the manufacture of other chemicals such as chlorinated phenols and their derivatives, chlorinated diphenyl ethers, and PCBs (WHO 1989) and combustion of chlorine-containing materials under some conditions. These compounds are one class of persistent organic pollutants (POPs).

The dioxins group comprises 75 polychlorinated dibenzo-p-dioxin (PCDD) congeners and 135 polychlorinated dibenzofuran (PCDF) congeners. There are no known technical uses for PCDD and PCDF (WHO 1989).

Some PCBs also have dioxin-like properties and are included as part of dioxin and dioxin-like compounds. PCBs are a class of organic compounds with 1 to 10 chlorine atoms attached to the biphenyl molecule. There are 209 possible PCB congeners although only 130 were found in commercial PCB mixtures.

The