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<br /> <br /> <br />Field Investigation Report <br />Old Snelling Avenue and County Road E Improvements <br />WSB Project No. R-015447-000 Page 4 <br /> <br />o Lead using EPA Method 6010D. <br /> <br />· Collected and submitted soil vapor samples for the following laboratory analysis: <br />o VOCs using Method TO-15 <br /> <br />· Sealed all borings in accordance with Minnesota Department of Health (MDH) <br />requirements. <br /> <br />· Prepared report detailing field observations, laboratory results, conclusions and <br />recommendations. <br /> <br />Details of the tasks completed during this investigation are discussed in the following sections. <br />General field methods are included as Appendix A. <br /> <br />1.3 Work Plan Deviations <br /> <br />The work was completed in accordance with WSB’s Field Investigation Work Plan, dated March <br />18, 2020, except for the following deviations: <br /> <br />· Soil sampling intervals with evidence of contamination were submitted for analysis of full <br />VOCs, rather than only BTEX. <br /> <br />· Select soil samples were submitted for full RCRA Metals, in addition to lead, for waste <br />characterization / landfill approval purposes. <br /> <br />· Groundwater was encountered at borings EB-1, EB-8, and EB-12. As a result, only three <br />groundwater samples were collected for laboratory analysis instead of seven. <br /> <br />· Groundwater samples were submitted for analysis of VOCs, rather than only BTEX. <br /> <br />The deviations were approved by the City prior to submitting the samples for laboratory analysis. <br />No other deviations from the original Field Investigation Work Plan were encountered. <br /> <br />