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2. Upon arriving at the sample station, the neoprene rubber ends of the sample lines are <br /> l checked for dirt and dust accumulation- If aecessaty, the sample-lines are flcishe <br /> d with <br /> distilled water. <br /> 3. The pressurelvacuum line is connected to the vacuum gage of the vacuum hand pump, <br /> The.claMP on the vacuum line it opened and the residualvacuum.rezntaiaing On the. <br /> Iysimeter unit Is measured and iccorded on the lysi Iter sampling log. <br /> 4: The pressurelvacuum&e.is connected to-the pressdre pump and the discharge (sample) <br /> line opened. The discharge line is inserted into a-clean,Onpreserved 1 liter plastic bottle <br /> Prepared and supplied by the analytical laboratory. ' <br /> S.- The pressure pump is activated, forcing air into-tile lysnueter. If additional <br /> Pressun'c-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 arc placed in an ice-filled chest to maintain a temperature of <br /> approximately 4 degrees Celsius during delivery to the laboratory under chaig of..cust dy <br /> procedures - <br /> 7- °ARerr the sample is collected, thelysimeter 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 that could cause vacuum Presse Ion& the <br /> line is then clamped and the lys6.eter secured. - <br /> - - f <br /> Z3-483&49-Ft}I1Z31OR325 A-13 a <br /> ttu�000 x aa,tru. July 11000 <br /> ° <br /> F <br />