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2. Upon arriving at the sample station, the .neoprene rubber ends of the sample lines are <br /> checked for dirt and dust accumulation. If necessary, the sample-lines arc 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 line it opened and the residual vacuum.remaining on the. <br /> 'lysimeter unit is measured-and--recorded on the lysimeter sampling log. <br /> 4: The pressurelvacuum line-_is connected to'the pressure pump and the discharge (sample) <br /> line opened. The discharge line is inserted into a.c1can,unprescrved 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 bottles as necessary-for the analytical <br /> requirements. The samples are placed in an iec-finned chest to maintain a temperature cif <br /> approximately 4 degrees Celsius during delivery to the laboratory under chain-of-custody <br /> procedures_ <br /> 7_ -After the 'sam le is collect the. I siincter vacutun - <br /> P Y is reset (evacuated) to the <br /> manufactured recommended value using a'hand vacm m pump. At this time,'the <br /> lysimeter is tested to evaluate potential Ieaks that could cause vacuum pressure loss. The <br /> PTessure/vacuum line is then clanrPed and the lysimeter secured. <br /> { <br /> 23-483849-FO11231 OR325 A-13 July 14,200 <br /> COPYd&2000 Kklarcua.Inc, <br />