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B.3.3 Sample Withdrawal <br />Water samples will be collected from monitoring wells using disposable polyethylene bailers. <br />These bailers are discarded after one use and do not require decontaminating, thereby minimizing cross- <br />contamination. All samples will be drawn and collected in a manner such that agitation and exposure <br />of the groundwater to the atmosphere is minimized. All sample containers will be filled by either pouring <br />directly out of the top of the bailer or by using an attachment which allows flow out of the bottom of the <br />bailer by lifting up on the check valve. <br />B.3.4 Sample Preservation and Handling <br />Sample containers and handling procedures will be in conformance with the established protocols <br />for each specific parameter. All samples will be placed on ice and kept in coolers until delivered to the <br />laboratory for analysis. <br />B.3.5 Field Analysis <br />The pH, electrical conductivity, and temperature of the groundwater will be measured in the field <br />during the purging of the wells at the time of sample collection. The meters used for measuring these <br />parameters will be calibrated on a daily basis prior to their use in the field according to the instructions <br />provided with the instrument. All field measurements will be recorded on a field record of water sample <br />form for each well and are maintained in the files. <br />B.3.6 Field and Trip Blanks <br />The protocol for taking the field blank requires that field sampling procedures be simulated. Field <br />Blanks will collected by pouring a sample of distilled water directly out of the container bottle into two <br />40 ml VOA bottles with teflon septa and adding preservatives as appropriate. These blanks will be <br />collected first thing in the morning and will be collected in the field near one of the monitoring well <br />locations. A field blank will be collected for each day that groundwater samples are collected. The filled <br />sample bottles will be packed with ice, placed in the ice chest, and transported to the laboratory for EPA <br />601 and 602 analysis. <br />PROP06.005 <br /> B-6 <br />DAMES & MOORE