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Owner/Operator or Respondent must submit a Phase 2 Workplan and/or Interim Corrective Measures Workplan must be submitted to the Department along with the Report. At a minimum, the Report must include: o A summary of investigation results (include tables that summarize analytical results). o A complete description of the investigation, including all data necessary to understand the project in its entirety including all investigative methods and procedures. o A discussion of key decision points encountered and resolved during the course of the investigation. o Graphical displays such as isopleths, potentiometric surface maps, cross- sections, plume contour maps (showing concentration levels, isoconcentration contours), facility maps (showing sample locations, etc.) and regional maps (showing receptor areas, water supply wells, etc.) that describe report results. Highlight important facts such as geologic features that may affect contaminant transport. o Tables that list all chemistry data for each medium investigated. o An analysis of current and existing ground water data to illustrate temporal changes for both water chemistry and piezometric data (use graphics whenever possible). o A description of potential or known impacts on human and environmental receptors from releases at the facility. Depending on the site specific circumstances, this analysis could be based on the results from contaminant dispersion models if field validation is performed. o A discussion of any upset conditions that occurred during any sampling events or laboratory analysis that may influence the results. The discussion must include any problems with the chain of custody procedures, sample holding times, sample preservation, handling and transport procedures, field equipment calibration and handling, field SCOPE OF WORK FOR A FACILITY INVESTIGATION WORKPLAN ATTACHMENT D PAGE 12