19E - WATER QUALITY REPORT - Laserfiche WebLink

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PFAS Sampling Guidance o Synthetic water-resistant/or stain -resistant materials (such as waterproof clothing and shoes such as Gore-Tex), waterproof or coated Tyvek® material (special attention to boots) o Sealable bags (e.g., zip -lock ® plastic bags) that are not provided by the laboratory. (Note: only ultra -clean polypropylene or HPDE material sealable bags are allowed) • Avoid sampling during rain if possible (if necessary please use, vinyl or PVC rain gear) • Fill gasoline in the vehicle the day before sampling • Never eat, drink or smoke during sampling activity BEFORE SAMPLING • Complete materials and supplies checklist (Attachment A). • Familiarize yourself with each site being sampled. • Coordinate the sampling event with the accredited laboratory. The laboratory will provide containers, sample preservation, COC forms, Ice chest, quality control samples, and shipping instructions. • Bottles should be labeled before sample collection. • Ensure sufficient number of sample battles and preservatives before departure. It is recommended to request extra bottles, in case of damage to bottles during shipping or handling during the sampling event. • Ensure that the ice chest interior is clean. • Fill the Ice chest with wet ice (not dry ice, blue ice or reusable chemical ice) before departure for the sample collection event. Keep water drained from ice chest to avoid soaking the containers. • Ensure an adequate number of sealable bags are available to store all sample bottles. SAMPLE COLLECTION PRECEDURE • Sampling taps and plumbing should be free of materials containing Teflon® (such as Teflon® tape at plumbing joints). • Wash hands with Alconox O soap and deionized water before each sampling event. • Wear nitrile gloves while filling and sealing the sample bottles, using a new pair of nitrile gloves with each sample. • Samples must be collected in a wide mouth 250 mL polypropylene bottle (provided by the laboratory) fitted with a polypropylene screw cap. • Each bottle needs to be preserved before sample collection with 5 g/L Trizma®, unless the preservative has been added to the bottles by the laboratory. 0 19E-24