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<br />' 3.2.1. Grab samples will be obtained from the upper impoundment <br />' area, the lower impoundment area and the collection pond feeder <br />ditch using a large, clean bucket capable of holding a volume in <br />excess of that of the entire volume of the water sample to be <br />' collected. In this way, the entire water sample can be collected <br />at one time and split into the individual bottles for specific <br />' analyses for WAD and total cyanide, as well as the five metal <br />species. For the collection pond feeder ditch, the safiple should <br />' be taken from the main flow of the ditch. ~ <br />After each use, the bucket will be cleaned using the procedures as <br />outlined in this protocol. The cleaning procedure will be quality- <br />controlled as outlined under the "Field Quality Control" section (section <br />' 3.3). <br />' Following a sampling series of no more than five samples, a rinse <br />blank will be collected from the bucket, running laboratory- <br />' provided de-ionized, distilled water throughout the entire bucket. <br />Analysis of this rinse blank will be used to valida#e cleaning <br />' procedures. <br />' Immediately after collection, all samples must be played in iced <br />coolers. The sample bottles required for each sample site are <br />listed in Table 5 (metals, cyanide). Sample preservation, pre- <br />' treatment and holding times, as outlined in Table 5, will be <br />strictly adhered to. <br />' 4.2.7 Sample Filtration: Process samples requiring on-site filtration <br />' will be filtered through a 20-micron filter. <br />' Samples will be preserved directly following filtration. <br /> <br />1 -29- <br /> <br />