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I-ftw N.04 LO Le Replicate Samples Sets of water samples will be collected in identical containers from the same water source and L- will be given different sample identification numbers. These numbers will be recorded on the sample control log sheets and water quality sampling record. One set of the samples, termed the "primary" sample, will be submitted to the primary subcontracted laboratory. The additional sets of samples, termed the replicate samples, will be submitted to the primary laboratory and/or to a secondary laboratory for identical analyses or an alternative analytical procedure as specified by the project manager. Blank Samples La Blank samples will consist of field blanks or travel blanks. A field blank is deionized water that is added to the sample bottles at the time of sample collection. A travel blank is deionized water that is added to the sample bottle by the subcontracted laboratory and which accompanies the other sample containers throughout the trip from the laboratory to the field and back to the laboratory. The field blank sample bottles are preserved and labeled in the same manner as the groundwater samples and are stored with the groundwater samples. Travel blanks are prepared by the subcontracted laboratory and are preserved in the same manner as groundwater samples, but are identified as travel blanks on the sample label. Travel blank samples will be designated as such on the chain-of-custody record. L„ 3.5 HANDLING, STORAGE, AND TRANSPORTATION Efforts will be made to handle, store, and transport supplies and samples safely. Exposure to dust, direct sunlight, high temperature, adverse weather conditions, or possible contamination will be avoided. Samples will be placed in an ice-cooled chest immediately following collection and will be delivered by Boyajian & Ross, Inc. (B&R) to the subcontracted laboratory as soon A" as possible, with a maximum holding time of 14 days. t. 4.0 FIELD MEASUREMENTS Field measurements of temperature, pH, and specific electrical conductance will be performed on groundwater samples. Data obtained from field water quality measurements will be recorded on the water quality sampling record. Field measurements will be made on separate aliquots of groundwater, which will not be submitted for laboratory analysis. 4.1 TEMPERATURE MEASUREMENT Temperature measurements may be made with a mercury-filled thermometer, or with an L& electronic thermometer, which is part of a combination field meter. D - 3 DA98IMPROTOCOL.W N i.r ]E;kBOYAJIAN & ROSS, INC. Environmenlal Scientists & Engineers Le