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r ME <br /> MA M <br /> 4 <br /> JY <br /> F <br /> f <br /> - 3.3 LABORATORY ANALYSES <br /> All samples will be analyzed by EPA-or California-approved procedures. The analyses <br /> tory in Redding, California. This laboratory <br /> will be carried out by CH2M HILL's labora <br /> is certified by the State of California to conduct the analyses specified in this work plan. <br /> Analytical parameters to be analyzed are based on the requirements of the Tri-Region- <br /> a] Board Staff Recommendations for Preliminary Evaluation and Investigation ofh nn-- <br /> derground Tank Site manual. r5 <br /> aSamples will be analyzed for the parameters listed in Table 3-1. Samplelpantainer <br /> preservation and holding time requirements are also shown in Table 3-1. After samples <br /> ' are collected in the appropriate containers and labeled, the containers will be placed in <br /> ziploek bags and placed in an ice-filled chest or cooler. Water sample bottles will be <br /> packaged securely with either bubble wrap or ,rmiculite to reduce chances of bottle <br /> breakage. Ice or blue ice will be placed on top of the samples. <br /> All appropriate sample documentation will be placed in a ziplock bag and taped to the <br /> inside lid of the cooler. The cooler will then be sealed with custody seals and strapping <br /> tape. Coolers will be couriered by the CH2M HILL laboratory or shipped via over- <br /> night courier (Federal Express or Greyhound) to the analytical laboratory. <br /> 3.4 DATA REVIEW AND ANALYSIS b - <br /> Data for all parameters will undergo two levels of review and validation: by the CH2M <br /> HILL Laboratory and by CH2M HILL. Data will be reviewed according to the guide- <br /> lines outlined below and described in detail in Section 4.0. Data will be reviewed with <br /> regard to the following: <br /> Analytical methodology <br /> -" a Detection limits <br /> Blanks for contamination <br /> Accuracy and precision <br /> The review process includes flagging data with qualifiers. Commonly used qualifiers <br /> include: <br /> J = Estimated, usable for limited purposes. The data are qualitatively, but <br /> not quantitatively, acceptable. <br /> R = Rejected, unusable. The data are qualitatively and quantitatively unac- <br /> ceptable. <br /> U = Undetected. The result is undetected at the instrument detection level <br /> (IDL). The data are acceptable. <br /> 3-E <br /> S170316051WP1003.51 <br />