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Field Investigation Work Plan 0 Brookside Estates, Stockton, California 1/9/07 Sert Consulting,Inc. 4.2 Sample)Handling Preparation,handling,and storage procedures are summarized below. The following text describes the handling procedures for both soil and water samples. This includes specific information regarding: • Required materials • Sample containers • Preservation and collection • Identification • Labeling Chain-of-custody • Shipment 4.2.1 Required Materials The following materials, depending on specific task, will be used as appropriate when packing or ' shipping samples: • Appropriate sampling containers ' • Self-adhesive labels of sufficient quantity for the planned sampling activity(if self-adhesive labels are inappropriate for the sample containers, use tape, adhesive,twist ties or other fastening material as appropriate to securely aux the completed label to the sample containers). ' • Chain-of-custody records • Bubble wraps or appropriate packing materials • Sealable plastic bags 1 • Coolers or shipping boxes,appropriate quantity for sampling activity • Strapping/packing tape • Pen with indelible ink 4.2.2 Sample Containers Groundwater samples for analysis will be placed in containers provided by the laboratory. The appropriate container types will be selected depending on sampling method and choice of analytical tests. Containers provided by the laboratory are batch-certified as clean by the supplier. Container type and volumes should be documented on chain-of-custody records and the project field notes. 4.2.3 Sample Preservation and Filtering Procedures Sample preservation, handling and analysis will meet the specifications of Test Methods for Evaluating Soil Waste Physical/Chemical Methods, Third Edition(EPA, 1994)and updates, Publication Number SW-846(as amended),or an equivalent substitute. Preservation methods and preservatives for each of the proposed analytical methods will be as directed by the laboratory performing the analyses. The laboratory will supply sample containers with appropriate preservatives,with the type of preservative clearly labeled. The preservative will be documented on the sample labels,chain-of-custody, and project field log. Groundwater samples to be submitted for metals analysis will be filtered in the field. Groundwater samples on which metals analyses will be conducted should be filtered through a 0.45-micron filter into a sample container with appropriate preservatives,and then analyzed for dissolved metals. 5