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11 <br />samples until they are shipped to the laboratory for analysis. <br />' Weather conditions at the time of sampling will be noted, such as <br />temperature, ice cover on ponds, etc. <br />~ , 4.2.4 Lvsimeter Water SamQline Method: Each lysimeter was assembled in <br />accordance with the manufacturer's instructions, using two <br />' continuous lengths of polyurethane tubing to serve as the vacuum <br />and sampling tubes. For ease of identification during lysimeter <br />' sampling, black tubes were used for the vacuum line and green tubes <br />were used for the sample line. <br />water is drawn into the porous sampling cup by placing a vacuum on <br />' the lysimeter. This is accomplished by clamping off the green <br />sampling tube and using a vacuum pump to evacuate the black vacuum <br />• line. The lysimeters should be kept under a vacuum thrpughout the <br />six-month interval between sampling. Lysimeters should be checked <br />monthly to see if the vacuum is still holding: If not, the vacuum <br />pump should be used to re-evacuate the porous cup and re-establish <br />a vacuum. <br />Sampling is accomplished by releasing the pinch clamtgs on both <br />lines and pressuri2ing the black vacuum line with a hand pump, <br />subsequently forcing any fluid collected in the porous cup out of <br />the green sampling tube. The discharge from the greeh sampling <br />tube may be collected directly into the appropriate bottles <br />previously prepared and supplied by the laboratory. Determination <br />of whether sufficient volume has been collected for analysis, <br />including performing all required laboratory QA/QC protocols, will <br />be on the basis of the protocol outlined in Section 6.1. <br /> 4.2.$ Pre-Detox and Post-Detox Samplinc Method: Samples will be collected <br />i <br /> after the sampling apparatus has been cleaned accord <br />ng to the <br /> procedures described in Section 3.2.1. Samples will be taken with <br /> a five-gallon bucket from "Vat-8" with one third of the five-gallon <br />1 <br />_29_ <br />1 <br />