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. ATC Associates Inc <br /> Quality Assurance/Quality Control Plan <br /> Revised 1998 <br /> Groundwater samples will be collected with a teflon bailer with bottom emptying device Duplicate <br /> samples will be transferred to vials or containers that meet Regional Board specifications (Table 1) <br /> Groundwater from the bailer will be transferred to the sample container by allowing the fluid to flow <br /> slowly along the sides of the vessel All containers will be filled above the top of the opening to form a <br /> positive meniscus No headspace should be present in the sample container once it is sealed After the <br /> vial is capped it will be inverted to check for air bubbles If bubbles are present the sample will be <br /> discarded and replaced If it is not possible to collect a sample without headspace, the problem will be <br /> noted on the field technician's sampling log <br /> Immediately followmg sample collection, samples will be labeled and stored in an ice chest containing <br /> frozen chemical ice sealed in plastic bags Sample labels will contain the following information <br /> . u date and tune <br /> U project ID <br /> U sample ID <br /> U name of sampler <br /> U type of analysis to be performed <br /> All samples will be transported under chain-of-custody protocol to a state certified laboratory within 24 <br /> hours A sample container filled in the laboratory with organic free water and carred unopened during <br /> the sampling trip will also be provided (Tnp Blank) A "high-low" temperature recording thermometer <br /> will also accompany sample shipments to ensure proper sample temperature maintenance <br /> Samples will be transported either by ATC Associates personnel or by private carrier Analytical <br /> holding times will be considered in determining sampling and shipping schedules Friday <br /> shipment/Saturday laboratory receipt of samples will be coordinated in advance with the laboratory <br />