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Unfiltered samples for the determination of stable oxygen-18 and <br /> ' deuterium isotopic composition are collected in 250-mL polyethylene <br /> bottles. <br /> ' Filtered samples for boron stable isotope analysis are collected in 250-mL <br /> polyethylene bottles. The caps are sealed with tape. <br /> ' Filtered samples for EDTA analysis are collected in 1000-mL I-Chem <br /> Series 200 amber glass bottles. The sample bottle is filled to the bottom <br /> of the bottle neck, placed on ice and sent immediately to the analyzing <br /> ' laboratory. <br /> Unfiltered samples for caffeine analysis are collected in two 1000-mL <br /> ' amber pre-preserved glass bottles. The sample bottle is filled to the top <br /> leaving no head space. The bottle is placed on ice and immediately <br /> shipped to the analyzing laboratory. <br /> t10.Field personnel shall collect ten percent of the total samples for quality <br /> assurance purposes (duplicate and field blank samples). Duplicate samples <br /> ' are collected and processed in the field and analyzed to evaluate the <br /> heterogeneity of the matrices. The duplicate samples are submitted to the <br /> laboratory with dummy site identifiers. Field blank samples are processed in <br /> ' the field identically as the other samples using de-ionized water as sample <br /> water. The field blank samples are submitted to the laboratory with dummy <br /> site identifiers <br /> ' 11.All samples are to be promptly delivered to the analytical laboratory under <br /> standard chain-of-custody control for analysis within the prescribed holding <br /> ' times. <br /> Constituent Analysis Plan <br /> ' Table 2 below reports the constituent list, sample processing, and analytical <br /> methods. Note that some constituents (i.e., potential wastewater indicators) are <br /> ' not analyzed each sampling event. <br /> • Field parameters collected during sampling to confirm water produced is <br /> ' representative of groundwater. <br /> • Constituents of concern identified in the Waste Discharge Requirements <br /> ' under Groundwater Limitations. <br /> • Constituents of concern identified in the Waste Discharge Requirements <br /> ' under the Groundwater Monitoring and Reporting Program. <br /> 12 _ <br /> 1 <br />