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ITO E RO E K SOP No.026,REV.1 ASSOCIATES,INC INDOOR AIR AND SUB-SLAB SOIL GAS SAMPLING METHODS PAGE 11 Checklist, to ensure proper documentation, custody and packaging requirements have been met. 22. Ship or transport samples to the laboratory for analysis. SUMMA® samples do not need to be chilled after collection or during transportation. 2.4 DOCUMENTATION AND RECORDS A permanent record must be maintained in a field logbook for each indoor air and sub-slab soil gas sample collected.This record should include,but may not be limited to,the following information: • Time and date of sampling, including time-weighted sample period; • Weather conditions for the past 24 to 48 hours (i.e., rain events); • Document on a floor plan, sample locations, HVAC features, room uses, garages, doorways and pre- and post-condition of the job site; • Any pertinent field observations (i.e., odors, heating, or A/C use) or field instrumentation (PID) readings; • Personnel performing the sampling and personnel present on-site during sampling such as EPA or state representatives, owners, residents, or occupants of the building; • Record of utility clearance (depending on sample locations); • Sample identification number(s) and location(s) (GPS or surveyed, if possible); • Vacuum before and after sample collection and volume of air or soil gas extracted; • Thickness of concrete slab and depths of sub-slab soil gas samples; • Location, proximity, and sample height to and from paired indoor air and sub-slab samples; • Manufacturer, lot numbers, clean certifications for Teflon®tubing; • Clean certificates for SUMMA® canisters;