Laserfiche WebLink
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 prrssurelvacuum line is connected to the vacuum gage of the vacuum handpump, <br /> The..clamp on the vacuum line is opened and the residual vacuum-remaining on the. <br /> lysimeter unit is measured andrecorded on the lysimeter sampling log. <br /> 4: The pressurelwacuum linc js connected to, the pressure pump and the discharge (sample) <br /> line opened. The discharge line is inserted into a.clean, uinpreserved l liter plastic bottie <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 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 of <br /> approximately 4 degrees Celsius during delivery to the laboratory under chain-of-custody <br /> procedures. <br /> 7_ After the sample is collected, <br /> 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 that could cause vacuum pressure loss_ The <br /> p, vacuum.line is then clarripedand the lysimeter secured. <br /> 23-483949-F0112310R325 A-13 <br /> 2000 x�rci4a,tr. July 1 a,2000 <br />