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Core samples will be taken every 5 feet for the entire depth of <br /> the well . Every effort will be made to obtain a core sample <br /> within the capillary fringe. The blow counts for the samples <br /> will be logged. <br /> soil samples will be obtained from the core samples taken every <br /> 5 feet during drilling. A split spoon sampler with brass <br /> sleeves will be used. The samples will remain within the brass <br /> sleeve covered with aluminum foal , and capped with the plastic <br />' caps which are supplied with the sleeves. The plastic cap will <br /> be taped to the brass sleeve using duct tape so that an air <br /> tight seal is obtained. Samples will be marked and placed in a <br /> cooler of ice until they are turned over to the laboratory, <br /> which should be within 48 hours of the drilling. A Chain of <br /> Custody will be filled out by the sampler. <br />' The split spoon sampler and the brass sleeves will be <br /> decontaminated before each sampling event. They will be washed <br /> with Tri-sodium phosphate detergent and water and rinsed <br />' thoroughly with clean water. <br /> Core samples will be measured with a OVA meter and the readings <br />' will be recorded on the drill log. These readings will be used <br /> to help select the cores to be sent for laboratory analysis. <br /> A minimum of three core samples will be sent for analysis. One <br /> of these samples will be from the capillary fringe. Also, if <br /> possible, one sample will be sent which is thought to be free of <br /> contaminant and one that is thought to be contaminated. One <br /> sample will be sent for at least every 15 feet of drilled hole <br /> above the water table. If the water table is at 10 feet or less <br /> then only 2 samples will be taken and analyzed. <br />' Water <br /> The equipment used to withdraw water from the well will be 2 PVC <br />' bailers. One bailer will be used to purge the well and the <br /> other will be used to withdraw the sample. All equipment <br /> including the bailers, and bailing cord, and the water depth <br />' measuring devise must be decontaminated prior to entering any <br /> well . They will be decontaminated by washing with Tri-sodium <br /> phosphate detergent and water and thoroughly rinsing them with <br /> clean water. <br /> IThe depth to groundwater will be measured from the highest point <br /> on the top of the casing to the surface of the water table. The <br />' devise used will be an electric conductivity devise which trips <br /> a red light and a buzzer when the probe touches water. A <br /> minimum of three measurements will be made at each well, the <br /> final reading will be noted after 2 or more readings do not vary <br /> by more than 0.03 feet. <br />' Page 21 <br />