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2. Upon arriving at the sample station, the neoprene rubber-ends of �jhe sample lines are <br /> checked for dirt and dust-accumulation. if necessary, the sample.luxes are flushed with <br /> distilled water. <br /> ti <br /> 3. The pressurelvacuum 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 mcasured-aud riworded on the lysirneter sampling log. <br /> 4, The pressu & acuum line.is connected to-the pressure pump and the discharge (sample) <br /> line,opened. The discharge line is inserted mato a.clean, Onpreserved 1 liter plastic bottle <br /> prepared and supplied by the analytical laboratory. ' <br /> 5. The pressure purnp is activated, forcing air into-the lysimctez: If additionalprrssure 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 icc-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. lysimeter vacuum. is reset (evacuated) to the <br /> manufactured recommended value using a*hand vacuum PSP- At this tune,*the <br /> lysimeter is tested to evaluate potential leaks that could cause vacuum pressure loss. The <br /> press nr vacuum line is then clamped and the lysimetar secured- <br /> 23--483849-FOIN231oR325 - 3 <br /> A 1 July 14,2040 <br /> Gopyri&2000 Kklnf44a.he_ <br />