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TO E RO E K SOP No.026,REV.1 <br /> ASSOCIATES,INC INDOOR AIR AND SUB-SLAB SOIL GAS SAMPLING METHODS <br /> PAGE 5 <br /> • Potable water for cement hydration; <br /> • Certified clean, evacuated SUMMA®canisters with appropriately sized stainless-steel <br /> fittings and graphite seals; <br /> • Pressure/vacuum gauges; <br /> • Integrated flow controllers that have been certified as calibrated (Note: Flow <br /> controller adjustments will not be made in the field to ensure integrity of the samples <br /> being collected. In the event of a flow issue, another flow controller will be used to <br /> collect the sample); <br /> • PID or other field air monitoring device with appropriate calibration kit; <br /> • Vacuum pump, syringe, or sampling system (SKC universal flow pump or equivalent) <br /> to allow purging of the sample point prior to collection of soil gas samples; <br /> • Standard SwagelokT"^ fittings and SwagelokT" "T" fittings or equivalent (for duplicate <br /> collection); <br /> • Leak check compound (tracer gas); <br /> • Sample documentation (sampling equipment/materials lot numbers and clean <br /> canister certifications, soil gas labels, field data sheets, logbook, etc.); and <br /> • Direct-push sampling assembly (may be used in place of hammer drill if access <br /> allows). <br /> Alternate vapor sample probe assemblies for sub-slab soil gas sampling generally consist of <br /> three types: <br /> • Hand-driven (hand auger or placement) probe,typically good for shallow,temporary <br /> applications; <br /> • Hydraulic-driven (direct-push) probe, good for shallow to moderately deep <br /> temporary and permanent applications; or <br />