07-24-23-R - Laserfiche WebLink

Home Browse Search

Bolton & Menk, Inc. Project B2204011.00 May 9, 2023 Page 3 Summary While copper, non-carcinogenic PAHs, and carcinogenic PAHs were detected across the Site, none of the samples contained concentrations greater than MPCA SRVs. Quality Assurance/Quality Control Samples were placed in clean, laboratory supplied containers, preserved, labeled, and transported to the Pace laboratory under refrigerated conditions using chain-of-custody procedures. Analyses were performed using EPA or other recognized standard procedures. A quality assessment of field procedures and analytical laboratory reports was performed to evaluate potential effects on data quality used to support project objectives. All applicable Braun Intertec SOPs were followed as prescribed unless otherwise noted in this report. Due to high moisture content and to provide the highest-resolution results, analytical results were reported to the method detection limit, which introduced “J” flagged results, which are considered estimated concentrations, reported at less than the laboratory reporting limit. The results were reported to the method detection limit, and the data was evaluated using the MPCA standard procedures as described in Appendix B of “Managing Stormwater Sediment BMP Guidance for Municipalities.” Recommendations Based on analytical results from our sampling and testing, excavated stormwater sediments from the Colleen Avenue project area fall within the Residential/Recreational SRV management category and may be used with no restrictions. General Our scope of our work was determined by our understanding of the rules and guidance of the MPCA as they apply to needs of Bolton & Menk, Inc., working on behalf of the City of Arden Hills. Therefore, the scope of work is not represented to conform explicitly to current MPCA written guidance.