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' • All water samples will be labeled, chilled and processed as described in Section 3 1 <br /> • Projects requiring a Quality Level of 2 or 3 may have select duplicate samples collected in the <br /> field or replicate analysis conducted to validate the reliability of the sample A trip blank and <br /> equipment blank may also be submitted Blanks and duplicate samples will be labeled, stored, <br /> and handled identically to all other samples <br /> ' • Water samples for heavy metal or inorganic constituents will be collected in clean, acid-rinsed <br /> EPA-approved vials or bottles Before sampling, the bottle will be rinsed several times with <br /> ' the water to be sampled The water will be filtered using a 0 45 um membrane filter Filtering <br /> removes the large colloids and sediments At least 500 ml of water will be collected from <br /> each site Samples will be acidified with HNO3 to a pH of approximately 2 This will insure <br /> ' that the cations will remain in solution Samples for anions and other constituents will be <br /> collected in raw state, unfiltered and untreated <br /> These well sampling procedures are designed to <br /> ' ensure that well water samples are representative of formation waters <br /> • ensure that all sample descriptions and field observations are consistent and <br /> accurate <br /> • minimize the risk of cross-contamination between samples <br /> ' 3.4 Surfacea r m <br /> W to Sampling lin <br /> g Procedures <br /> ' . Plastic, vinyl or Nitrile gloves will be warn during sampling and changed between samples <br /> ' Normally two samples will be collected from each site, in case additional analytical work is <br /> required later The samples will be carefully handled to prevent agitation and subsequent <br /> aeration The samples will be immediately transferred to EPA-approved VOA bottles/vials of <br /> ' appropriate size, and filled completely without headspace <br /> • All water samples will be labeled, chilled and processed as described in Section 3 1 <br /> ' . Projects requiring a Quality Level of 2 or 3 may have select duplicate samples collected in the <br /> field or replicate analysis conducted to validate the reliability of the sample A trip blank may <br /> ' be submitted to ensure sample integrity Blanks and duplicate samples will be labeled, stored, <br /> and handled identically to all other samples <br /> American Geological Services, Inc. <br /> ' 6 <br />