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r x <br /> x <br />- a <br /> 9 <br /> GROUNDWATER TECHNOLOGY, INC. <br /> STANDARD OPERATING PROCEDURE <br /> CONCERNING SOIL SAMPLE COLLECTION AND <br /> HANDLING WHEN SAMPLING FOR VOLATILE ORGANICS <br /> SOP is <br /> 1. Use a sampling means which maintains the physical integrity <br /> of the samples. The project sampling protocol will <br /> designate a preferred sampling tool. A split-spoon sampler <br /> with liners, or similar tube sampler which can be sealed, is <br /> best. <br /> 2. At the discretion of the project manager, the samples should <br /> be ether. <br /> A. Sealed in liner with TeflonR plugs (The "California <br /> Samplsr") or <br /> B. yield-prepped for sample analysis. <br /> Projects using method "A" will incur a separate sample <br /> preparation charge of $10.00 per sample in the laboratory. <br /> For method "B", prepared and pre-weighed vials, and sample- <br /> coring syringes must be ordered at least two weeks ahead of <br /> time from the laboratory before sampling, (Vials are free <br /> if samples will be sent to Groundwater Technology <br /> Laboratory) . <br /> 3. For sending whole-core samples (2A above) : <br /> A. Seal ends of liner with TeflonR tape or aluminum foil <br /> leaving no free air space inside. <br /> r B. Tape with duct tape. <br /> -- C. Place in plastic bag labeled with indelible marker. <br /> Use well number, depth, date, and job number. <br /> D. Place inside a second bag and place a labelling tag <br /> inside outer bag. <br /> E. Enclose samples in a cooler with suf`icient ice or dry <br /> ice to maintain samples az 4 celsius during shipment, <br /> F. Seal cooler with a lock or tape with samplers, <br /> --• signature so tampering can be detected. <br />