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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 /> 3. The gressureJvacuum line is connected to the vacuum gage of the vacuum hand pump. <br /> The..clamp oil the va=um lame is opened and the residual vacuum.remaining on the. <br /> lysimeter unit"is maasured-and recorded on the lysimeter sampling log. <br /> 4: The pressurdvacuum line-is connected to-the pressure pump and the discharge (scruple) <br /> line operxcd. The discharge line is inserted into a clean,iuxprescrvexl 1 titer 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 Aecessary'for the analytical <br /> requirements_ The samples arc placed in an ice-filled chest to iu'aintain a <br /> temperature of <br /> approximately 4 degrees Celsius during delivery to the laboratory under chain.-of-cttstacly <br /> procedures_ s <br /> After the sample is collected, <br /> the. lysimeter vacuum,is reset (evacuated) to the <br /> Manufactured recommcnded value us" a'hand <br /> r°$ vatxxuuz Pump- At this time,'the <br /> lysirneter is tested to evaluate potential leaks char could cause vacuum pressuze loss.The <br /> PreSSUrC vacuuuz lire is then clamped and the lysimeter secured. <br /> F <br /> 3 <br /> -} 23-483849-FOM I OR325 A-13 � <br /> copydeu 200 Xkbretder.hx- July 14,2000 <br />