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Types of Aircraft: <br />None <br />Seeding Devices, Materials and Seeding Rates, etc.: <br />15 to 35 manually or remotely operated ground -based cloud nuclei generators using a 4% silver <br />iodide, 1.25% sodium iodide solution in acetone, burned in a propane flame at a rate of 5 to 25 grams <br />per hour when cloud systems with a 700mb temperature are -4C to -16C <br />Description of How the Project will be carried Out: <br />The operational procedures to be used by the applicant to achieve the stated objective are to <br />produce silver iodide crystals (artificial cloud nuclei) from the network of ground -based generators for <br />diffusion by favorable wind flows into selected storm or cloud types favorable for reasonable <br />precipitation increases over the project area. An analysis of low -level wind fields, cloud characteristics, <br />stability parameters, terrain features, and synoptic meteorological features will determine the network <br />of generators which will best seed the cloud system over the project area for each situation and will <br />provide a method for adjusting the network as new weather information becomes available. With a <br />"best" initial network to seed a situation established, the generator operators are telephoned to turn on <br />their generator at a specific time and run them at a specific burn rate. On the same call they will be <br />given a specific turn -off time which could be subject to change by another phone call from the <br />meteorologist at Western Weather Consultants LLC. Incoming weather data into the forecast office <br />allows a continuous monitoring of any changes in conditions and any adjustments or termination in the <br />seeding operation. <br />Western Weather Consultants Seeding Criteria for Winter Cloud Systems <br />Cloud bases are at least 500 feet below the mean mountain barrier crest of the Target Area and <br />are forecast to move lower into the beginning seeding period. <br />Temperatures at the height of 500 feet below the mean mountain crest within the Target Area <br />are -5 C (23 F) or colder and are forecast to become colder if at -5 C. <br />Wind directions and speeds from the surface to cloud -base are observed and forecast to favor <br />the movement into the intended Target Area of the silver iodide nuclei being released from the ground- <br />based generator sites into the intended Target Area. <br />There are no stable regions or atmospheric inversions between the surface and cloud -base that <br />would prevent the vertical dispersion of the silver iodide particles from the surface to at least the -5 C <br />(23 F) level or colder within the cloud system. <br />The temperature at approximately 10,000 feet (700 -mb level) is warmer than -16 C (3 F). <br />