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4.5 Sample Collection Protocol <br /> The following guidelines should be incorporated into the sample collection protocol: <br /> (1 ) Sample bottles are to be plastic (250 ml or 500 ml) and prerinsed with <br /> distilled water. <br /> (2) Collect two bottles from each site. Label with the following: <br /> A. Site name (name of mine, spring, etc.) <br /> B. Date, time <br /> C. Map coordinates (or longitude and latitude) <br /> D. Sample description (rainwater, mine water, snow, etc.) <br /> (3) Archive one set of samples. Send the second set of samples to a <br /> certified laboratory under chain-of-custody procedures. <br /> (4) Fill two bottles with distilled water for use as trip blanks. Label as <br /> "Distilled Water." Include date and time. Send one trip blank for <br /> analysis. Archive the second sample. <br /> (5) DO NOT store samples in same building with tracer. <br /> (6) Bottles must be tightly sealed, but no refrigeration or special preservation <br /> methods are needed. <br /> 4.6 Sample Analysis <br /> Samples are to be analyzed by a certified laboratory using EPA method 300.0 (see <br /> Appendix A). This ion chromatographic method is a recognized standard for the <br /> analysis for bromide and allows detection of bromide to approximately 0.01 milligrams <br /> per liter. The laboratory must provide documentation that their analytical scales have <br /> been certified (calibrated against standards) on an annual basis. <br /> sunny\wp\traci\2251 Morkplan.693 15 <br /> no simon HYDRO-SEARCH <br />