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2. Upon arriving at the sample station, the n.-oprine rubber ends- of the sample lines are <br />checked for dirt and dust- accumulation. If necmaq, the sample. lines are flushed with <br />distilled water. <br />I The Pressuretvacuum line is connected to the vacuum gage of the vacuum hand pump. <br />The .!clarnO oi2 the vacuum fine it opened and the residual vacuum MM43:Mg on the. <br />Iysimeter unit is masured-andrecorded on the bsimder sampling log. <br />4. The pressurdvwuum line- is connected to. the pressure pump and the discbarge (sample) <br />line opened. The disclwgc fine is irtserted into adcan, uW*tserved 1 liter plastic bottle <br />prepared and supplied by the analytical laboratory. <br />S. 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 <br />now is <br />achieved- 71 <br />,6- T -h,6 sample is Split to othei appropriately preserved bottles as ' <br />RecCsSarY 'for the analytical <br />requirements. 7he samples are VL-xxd in an ice -filled chest to jn�antain a - <br />temperature of <br />2PProximately 4 degrees Celsius during delivery to the laboratory under chain-of-�custody <br />procedures. <br />7- 'Afier the 'sample is collccted, the. bsimeter vacuum is reset (evacuated) to the <br />=2nufacturcd recommended value using a'hand va'cnm Pump. At this timh� <br />l7simeter is tested to evaluate potential leaks that could cause vacuum <br />pressum loss. The <br />Pressuz&Vacuum line is then clamped and the IYrr/ctcr secured- <br />