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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 are flushed with <br /> distilled water. <br /> s <br /> 3. The pressure/vacuum line is connected to the vacuum gage of the vacuum .hand pump. <br /> The clamp on the vacuum line is opened and the residual vacuum.remaining on the. <br /> :lysimeter unit is measured-and recorded on the lysimeter sampling log. <br /> 4: The pressure/vacuum line js connected to-the pressure pump and the discharge (sample) <br /> line.opened The discharge fine is inserted into a.clean, unpreserved 1 liter plastic bottle <br /> prepared and supplied by the analytical laboratory. <br /> 5.• 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 ice-filled chest to maintain a temperature of <br /> approximately 4 degrees Celsius during delivery to the laboratory under chain-of <br /> _. procedures_ <br /> 7_ -After theect sam le is collected,ed, the. lysimeter vacuum. is reser (evacuated) to the _ <br /> manufactured recommended value using a*hand vacuum pump. At this time, the <br /> lysimeter is tested to evaluate potential leaks that could cause vacuum pressure loss. The <br /> pressure/vacuum line is then clamped and the lysimeter secured. <br /> i23-483949-FU1\22310R325 A-13 July 14,2004 <br /> CopyTi&20M wemtda«,tom. <br />