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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 necessazy, the sample-lines are flushed with <br /> distilled water. <br /> I The pressurelvacuum line is connected to the vacuum a of the vacuum bandpump. <br /> The.clamp on the rwmum line is opened and the residual vacuum.remaining on the. <br /> Iysimeter unit'is measured-and recorded on the lysimeter sampling tog. <br /> 4: The p . elwa,cuum line-is connected to'the pr p and the discharge. - haxg (sample) <br /> line opened. The discharge line is k=led into a-clean,unptrserved l liter plastic bottle <br /> prc and supplied by the analytical laboratory. <br /> 5.- The pressure putup is activated, forcing air into-the lysimeter. If additional premie.is <br /> needed to retrieve the fluid more quickly, the pressure is increased until adequate flaw is <br /> achieved. <br /> 6. The sample is split to other appropriately preserved bottles as necessary-for the analytical <br /> requirements. The samples arc placed in an ice-filled chest to maintain a temperature of <br /> approximately 4 degrees Celsius during delivery to the laboratory underf-custody <br /> procedu=_ <br /> 7_ 'After the 'sam le is collect the. siMeter vacuum is <br /> - P � t �, }Y reset (evacuated) to the <br /> rnarzufacture-d recommended value using a`hand vacuum pump. At this time,'the <br /> lysimeter is tested to evaluate potential leaks that could cause vacuum <br /> pressure;ass.The <br /> pressure/vacuum line is then clamped and the lysimeter <br /> 33949-F011231 OR325 A-13 July 14,2000 <br /> C*pydgM 2000 KIcbreia,=,ern. <br />