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L <br /> L 11 September 2002 <br /> Dennis H. Catanyag <br /> San Joaquin County <br /> L <br /> Environmental Health Department <br /> Page 4 <br /> Lsoil beneath the used oil tank. Soil contained in a liner that will be analyzed for VOCs <br /> L will be sub-sampled by the EnCore' method, as described in U.S. EPA Method 5035 and <br /> California Department -of Environmental Protection Agency, Department of Toxic <br /> Substances Control Hazardous Material Laboratory s standard operating procedure 732-5 <br /> L entitled Guide for Field Sampling with Encore Sampler for VOCs Analysis, dated <br /> October 1998. Soil contained in a liner that will be analyzed for non-volatile compounds <br /> will be retained in the liner. Both ends of the liner will be covered with Teflon sheets <br /> Land capped with plastic end caps. <br /> A label will be attached to each container. The label will include a unique sample <br /> L identification number, the sample depth, the time, and the date when the sample was <br /> collected. Labeled sample containers will be placed in zip-closure plastic bags and will <br /> be transported to the analytical laboratory in a cooled container under chain-of-custody <br /> Lprocedures. <br /> Groundwater Sampling and Handling <br /> LIf groundwater is encountered during drilling, a grab groundwater sample will be <br /> collected from one of the borings with a disposable polyethylene or Teflon bailer. <br /> L Water in the bailer will be transferred directly into laboratory-supplied containers and <br /> will be preserved as specified for the analytical methods to be conducted on the samples. <br /> L A label will be attached to each container. The label will include a unique sample <br /> identification number, the time, and the date when the sample was collected. Filled <br /> containers will be placed in zip-closure plastic bags. Collected groundwater samples will <br /> be transported to the analytical laboratory in a cooled container under chain-of-custody <br /> procedures. <br /> Chain-of-Custody Procedure <br /> L Each soil and groundwater sample will be labeled and properly sealed after collection. <br /> Documents will be prepared so that sample handling and tracking can be controlled and <br /> followed. Sample tracking documents will be filled out with waterproof ink as part of <br /> sampling activities and will include daily field logs, sample labels, and chain-of-custody <br /> records. Chain-of-custody records will include the following information: <br /> J • Client and project number <br /> L • Site name <br /> L • Name or initials of sample collector <br /> L <br />