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2. Upon arriving at the sample station, the naogrene rubber ends of the sample lines are <br /> checked for dirt and dust-accumulation. If necessag, the sample-lines are flushed with <br /> i distilled water. <br /> I 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.rem ' ' g on the. <br /> Iysimeter unit'is measured and recorded on the lysinicter sampling log. <br /> 4The pressurelvacuum lincjs connected the 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 /> 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 <br /> of <br /> approximately 4 degrees Celsius during delivery to the laboratory under c}ain-of-custody <br /> procedures. <br /> e <br /> ?_ =After the 'sample is collected, the. lysimeter vacuum, is reset (evacuated) to the <br /> manufactured recommended value using :a'hand vacuum pump. At this time, the <br /> lysimeter is tested to evaluate potential leaks th= could cause vacuum presses loss. ,e <br /> pressurelvacuumr lime is then clamped and the eters - <br /> 23-483&49•F0112.3I OR325 A-I3 July 14,200 <br /> C4VYdtM 2000 Kwarel6cr.he— <br />