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<br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />Only in-storm releases will be made. In-storm releases will <br />provide a better representation of transport and dispersion <br />characteristics during periods when the liquid propane will be <br />most effective. Tracer experiments will be conducted from <br />January 25 through March 25. North American Weather Consultants <br />will provide the analyzers, calibration gases, and sequential <br />samplers. DWR will provide 24 115 lb. bottles of SF6. <br /> <br />Up to twelve SF6 bottles will be manifolded at each of the two <br />release sites. A solenoid valve will be placed in the release <br />line. The solenoid will be controlled via the propane dispenser <br />microprocessor. This will allow remote release of the gas. <br />Release rates of approximately 45 lbs/hr should allow about 30 <br />one hour experiments to be performed. <br /> <br />3. Operation of Ground Based Eauipment <br /> <br />A. Propane Dispensers <br /> <br />Ten propane seeding dispensers will be installed along the Sierra <br />Crest at the locations shown in Fig. 3-1 and listed in Table 3.1. <br />The propane dispenser and the filled propane tanks can be <br />helicoptered to the site as a single unit. <br /> <br />~ <br /> <br />A magnetic latching valve has replaced one of the previous <br />filtered lock-off values (nozzle 2). This will eliminate battery <br /> <br />17 <br />