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u � <br /> ATC Associates Inc. <br /> Quality Assurance/Quality Control Plan <br /> Revised March 1998 <br /> sample container once it is sealed. After the vial is capped it will be inverted to check for air <br /> bubbles. If bubbles are present the sample will be discarded and replaced. If it is not possible to <br /> collect a sample without headspace, the problem will be noted on the field technician's sampling <br /> log. <br /> Immediately following sample collection, samples will be labeled and stored in an ice chest <br /> containing frozen chemical ice sealed in plastic bags. Sample labels will contain the following <br /> information: <br /> ✓ date and time <br /> ✓ project ID <br /> ✓ sample ID <br /> ✓ name of sampler <br /> ✓ type of analysis to be performed <br /> All samples will be transported under chain-of-custody protocol to a state certified laboratory <br /> within 24 hours. A sample container filled in the laboratory with organic free water and carried <br /> unopened during the sampling trip will also be provided (Trip Blank). A "high-low" temperature <br /> recording thermometer will also accompany sample shipments to ensure proper sample <br /> temperature maintenance. <br /> Samples will be transported either by ATC Associates Inc. personnel or by private carrier. <br /> Analytical holding times will be considered in determining sampling and shipping schedules. <br /> Friday shipment/Saturday laboratory receipt of samples will be coordinated in advance with the <br /> laboratory. <br /> W:\Admin\Shells\QAQC-9g.DOC <br /> 15 <br />