19E - WATER QUALITY REPORT - Laserfiche WebLink

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PFAS Sampling Guidance • Ensure that the sample container is labeled appropriately, check that the label ID number on the sample container matches the COC form. • Collect the sample: o Open the sample tap and allow the system to flush until the water temperature has stabilized, or until a minimum of one well casing volume has been flushed out. It is recommended that wells be allowed to flow for a minimum of 15 minutes before sampling to ensure that the sample reflects the water quality of the source. o Reduce the flow to a slow laminar stream to reduce air entrainment and overfilling of the bottle. o Uncap the sample bottle. Do not place the bottle cap on any surface when collecting the sample, and avoid all contact with the inside of the sample bottle or its cap. o Fill sample bottle, taking care not to flush out the sample preservation reagent. Samples do not need to be collected headspace free, but a volume of 250 mL is necessary for the sample analysis. o After collecting the sample, cap the bottle and gently agitate by hand until preservative is dissolved. o Place the sample bottle(s) in an individual sealed plastic bag (provided by the laboratory), and then into the ice chest with ice surrounding the bottles. (Note: only ultra -clean polypropylene or HPDE material sealed bags are allowed). • Place the COC seal across the top of each sample bottle cap. • Sample personnel will collect appropriate quality control samples (field blank, trip blanks and split samples). One field sample per sample site, one trip blank per ice chest. • A two -person sample team is recommended: One team member obtains the samples, and other records the. samples in the COC form with the sample collection information. • Record field site observations in the field notebook' (such as types of pipes and fittings, time well operated prior to sample, site characteristics, atmospheric conditions, etc.). Take pictures documenting the specific conditions encountered and how the sample was collected. Record this information at the time of sampling. AFTER SAMPLING All team members coming out of the site sampling area must immediately conduct personal decontamination. • Remove your gloves and place them in a sealable plastic bag. • Wash your hands with Alconox ® soap and rinse with deionized water. ' The field notebook should not be waterproof 19E-25