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A& 2. Upon arriving at the sample station, the nzoprcine rubber ends of the sample hes are <br />checked for dirt and dust -accumulation. If necessary, the sample- lines'are flu -shed with <br />distilled water. <br />3. The pressureNacuum, line is connected to the vacuum gage of the vacuum hand- pump. <br />Tlae.clamp on the vacuum line it opened and the residual vacuum. remaining on the. <br />1ysimcter unit'is mea=ed-an(f 'recorded on the lysitacter sampling or <br />eThe an pressu:rdvacuum, line -Js connected to' the presslire pump d the discharge (sample) <br />line openc& 11e discharge line is inserted into a clean, UnPreserved I liter plastic bottle <br />prepared and supplied by the analytical laboratory. <br />5-- The J pump is activated, forcing air into -the lysimeter. ff addWonal pre -,sure. is <br />needed to re��eve the fluid more quickly, the liressm-e is i=eased until 2dquate flow is <br />achieved- <br />6- Th,6 sample is split to other'appropriately prcscxvcd battles as UCCCSS217'for the analytical <br />requirements, The satuples arc placed in anice-fillcd chest to mntain a temperatwe of <br />approximateIY4 degrees Celsius during delivery to the laboraory under Chaia--of-custody <br />procedures- <br />7- Afte the 'sampir is collected, the. brsiTeter vacu=, is reset (evac=cd) to the <br />=2nufactumd, recommended value using a'hand vacuum Purnp. At this timeth,� <br />lysimeter is t-6sted to evaluate potential leaks that could cause vacuufa' pressure loss- 'The <br />pressureA-acuum, line is then clauqndand the •• .w secured- <br />23-483949.FOI\23 I OR325 <br />C M*,dSW IM XkWdda. bv- <br />M, <br />July 14,200 <br />