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2. Upon arriving at the sample station, the :coprene rubber ends of the sample tines <br /> are <br /> checked for dirt and dust-accumulation If necessary, the sample-lines are flushed with <br /> distilled water. <br /> 3. The pressure/vacuum line is connected to the vacuum gage of the vacuum hand"pump <br /> The.clamp on the vacuum fine it opened and the residual vacuum.remaining on the. <br /> Iysimeter unit"is measured and iecorded on the lysimcter sampling log. <br /> 4: The pressure/vacuum line--is connected tathe pressure pump and the discharge (sample) <br /> line opened The discharge line is inserted into a-clean,unpreserved 1 liter plastic bottle <br /> prepared and supplied by the analytical laboratory. <br /> S.- The pressure pump is activated, forcing air into-the lysimeter. If additional pressure.is <br /> needed to retrieve the fluid more quickly, the pressure is increased until adequate flow is <br /> achieved_ <br /> 6. The sample is split to other appropriately preserved battles as necessary-for the analytical <br /> requirements. The samples are placed in an ice-filled chest to maintain a temperature of <br /> approximately 4 degrees Celsius during delivery to the laboratory under chain-of-custody <br /> procedures. <br /> `. 7_ After the sample is collected, the. ly ` , star vacuzun. is nisei (evacuated) to the <br /> =anufactured recommended value using a'hand vacu= pump. At this time,"the <br /> lysirneter is Nested to evaluate potential leaks that could cause vacuum pressure loss_ The <br /> pressur&-vacuum line is then clamped and the brsimttcr se=-cd_ <br /> Z3-483849-FOI\231OR3Z5 A-13 July 14,2040 <br /> C*Prism IM tckbtdda,br- <br />