ARCHIVED REPORTS_XR0005267 - Laserfiche WebLink

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1 I NOMA Working To Restore Nature intervals in accordance with RESNA's Soil Sampling Protocol (Appendix III, RESNA's Workplan for Additional Soil and Groundwater Investigation, July 8, 1994) Two soil samples ' were collected for laboratory analysis, one of which was collected from the capillary fringe soils, 70 feet below surface grade The location of the well is shown on Plate 3 Cored samples were collected in brass sleeves with a modified California split spoon sampler Sample sleeves were sealed with teflon tape and a plastic cap, sealed in plastic bags and transported to the laboratory under strict chain-of-custody on ice in an airtight cooler Samples ' were analyzed for BTEX by EPA method 8020 and TPHg by EPA method 8015 by Argon Mobil Laboratory, certification no 1873 ' All drill cuttings were placed on plastic sheeting, covered with same, and retained on-site The monitoring well was constructed of 4-inch diameter F480 PVC well screen/casing and ' completed as shown on Plate 4 The well screen was constructed of 0 010 inch slot with a filter pack of 2112 Lonestar Silica sand A 2-foot bentonite seal was placed above the filter pack with an annular seal of neat cement A street-grade chesty box and a locking cap was used to finish ' the well Subsequent to well installation, the wellheads of the new monitoring well and the facility well were surveyed vertically to the site datum and the survey data were tied to the existing well on- site Depth to water readings were collected for gradient direction and magnitude confirmation The well was developed in accordance with RESNA QA/QC and Development Protocol ' (Appendix III, Workplan for Additional Soil and Groundwater Investigation, RESNA, July 8, 1994). Activities involving potential contact with hazardous substances (i e , petroleum hydrocarbon contaminated soil, water) were conducted in accordance with RESNA's site specific Health and ' Safety Plan (Appendix IV, Workplan for Additional Soil and Groundwater Investigation, RESNA, July 8, 1994) ' After well development, water samples were collected in accordance with RESNA's QA/QC Groundwater Sampling Protocol (Appendix III, Workplan for Additional Soil and Groundwater Investigation, RESNA, July 8, 1994) Stabilization of pH, temperature and conductivity was ' verified prior to sample collection Samples were collected with sterile teflon bailers, placed in sealed glass bottles, labeled and transported on ice to Argon Mobile Laboratory, certification no. 1873 All samples were transported under strict chain-of-custody in an airtight cooler t Purged water from well development remains on-site in approved DOT 55-gallon drums Samples were analyzed for BTEX and TPHg using EPA method 8020 and 8015, respectively M M00661REPORMSR-0844 FNL 5