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APPENDIX C <br /> FIELD PROCEDURES <br /> C.1 SOIL SAMPLING AND HYDROPUNCH GROUNDWATER SAMPLING <br /> 1. Hydropunch borings HP3 and HP4 will be advanced using a direct push rig. <br /> 2. Each boring location will be hand augered to 5-feet bgs to clear the boring of any <br /> potential unmarked utilities or other subsurface obstructions. <br /> 3. Continuous core soil samples will be collected from boring HP3 between approximately <br /> 5 feet bgs and 30 feet bgs to assess the presence of petroleum hydrocarbons in soils above <br /> the groundwater table. <br /> 4. Soil samples will be collected from boring HP3 for laboratory analysis at five-foot <br /> intervals beginning at 5 feet bgs, and at changes in soil lithology with obvious <br /> contamination. <br /> 5. Soil samples will be collected in acetate liners, capped and labeled with the borehole <br /> number, sample depth, project number and time and date of collection, placed in a <br /> sealable bag and stored in an insulated chest into an insulated chest chilled with ice <br /> pending transport to the analytical laboratory. <br /> 6. Additional portions of the soil samples will be placed in a zip-lock bag for field screening <br /> for UVOCs using a PID. <br /> 7. Groundwater samples will be collected with a hydropunch sampler. <br /> 8. After reaching desired groundwater sample collections depths, the protective shield of the <br /> hydropunch will be retracted allowing groundwater to enter the intake screen. <br /> 9. Groundwater will be allowed to equilibrate for approximately 15 minutes. <br /> 10. A groundwater sample will be collected using dedicated 0.25-inch diameter Teflon tubing <br /> fitted with a stainless-steel check valve. <br /> 11. All items entering the boring will be cleaned prior to use and between sampling period. <br /> 12. Three EPA approved, zero head space, 40 mL vials will be collected from each boring. <br /> 13. Each vial will be labeled with project specific information, placed in a sealable bag and <br /> stored in an insulated chest into an ice chest chilled with ice pending transport to the <br /> analytical laboratory. <br /> 14. Sample handling, transport, and delivery to the laboratory were documented using Chain- <br /> of-Custody procedures, including the use of Chain-of-Custody forms. <br /> FREY Environmental,Inc. Project No. 1095-01 <br />