ARCHIVED REPORTS XR0004770 - Laserfiche WebLink

Home Browse Search

r Working To Restore Nature Lonestar Silica sand A bentonite seal was placed above the filter pack with an annular seal of neat cement. A street-grade chnsty box and a locking cap was used to finish each well Soil ' borings were abandoned by backfilling to the surface with a neat cement grout ' Subsequent to well installation, the wellheads were surveyed vertically to the site datum and the survey data was tied to the existing wells on-site Depth-to-water readings were collected for ' gradient direction and magnitude confirmation The wells were developed in accordance with RESNA Quality Assurance/Quality Control Plan (QA/QC) and Development Protocol (RESNA, rMay 4, 1994, Workplan for Additional Site Investigation, Appendix I) Activities involving potential contact with hazardous substances (i a petroleum hydrocarbon contaminated soil, water) were conducted in accordance with RESNA's site specific Health and rSafety Plan (RESNA, May 4, 1994, Workplan for Additional Site Investigation, Appendix 11) After well development, water samples were collected in accordance with RFSNA's QA/QC ' Groundwater Sampling Protocol (RESNA, May 4, 1994, Workplan for Additional Site Investigation, Appendix II). Stabilization of pH, temperature and conductivity were verified ' prior to sample collection Samples were collected with sterile teflon bailers, placed in sealed glass bottles, labeled and transported on ice to Sequoia Analytical Laboratory All samples were transported under strict chain-of-custody in an airtight cooler Purged water from well development remains on-site in approved DOT 55-gallon drums pending laboratory analysis prior ' to disposal Samples were analyzed for BTEX and TPHg using EPA methods 8020 and 8015, respectively The water sample from the Madison Street site was also analyzed for TPHd (8015) and HVOs (8010) 1 1 15007MREPORTSISR-06%FNL 9