Laserfiche WebLink
Site Health and Safety Plan <br /> ENSAFE RS&H <br /> Stockton Metropolitan Airport, Stockton, California <br /> January 27, 2020 <br /> encountered. No additional well pack or well vault will be installed, and the temporary wells will be <br /> sampled as described below. <br /> The field team will use a peristaltic pump to facilitate sample collection; as noted previously, all <br /> sample tubing will be high-density polyethylene (HDPE) and silicon. Groundwater levels will be <br /> measured in each well prior to sampling. <br /> Groundwater samples will be collected in unpreserved laboratory-supplied sample jars and placed in <br /> ice-filled coolers. Field quality control samples (such as duplicates, field blanks, and equipment <br /> blanks) and sampling frequency will be performed as described in the Work Plan. Samples will be <br /> shipped under chain-of-custody to a California-certified laboratory for PFAS analysis as described in <br /> Section 7. <br /> FIELD DECONTAMINATION PROCEDURES <br /> To the maximum extent possible, EnSafe will use dedicated and disposable sampling equipment to <br /> avoid the potential for cross-contamination of samples. The dedicated/disposable sampling <br /> equipment will include disposable HDPE and silicon tubing, disposable gloves, and laboratory-supplied <br /> sample bottles. Materials to be avoided due to the potential for PFAS cross contamination are outlined <br /> in the Work Plan. Additional precautions include: <br /> • Liquinox soap is acceptable for use since the Safety Data Sheet does not list fluoro-surfactants <br /> as an ingredient <br /> • Water used for the decontamination of the sampling equipment will be laboratory certified <br /> "PFAS-free" water <br /> • If recycled paper towels are used, then the water level measurements will be collected after <br /> completion of groundwater sampling to avoid potential contamination from materials <br /> containing PFAS <br /> Non-disposable or non-dedicated sampling equipment (e.g., DPT parts, hand shovels, peristaltic <br /> pumps, water level indicators, water quality meters, etc.) will be decontaminated prior to sampling <br /> and between samples. Cleaning of equipment will be performed to prevent cross-contamination <br /> between samples and to maintain a clean working environment for all personnel. All pre-sampling <br /> 10 <br />