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<br />=ORI <br /> <br />Desert Research Institute <br /> <br />May 21,2008 <br /> <br />Mr. Joe Busto <br />CWCB Flood Protection Program <br />1313 Sherman St., Room 721 <br />Denver, CO 80203 <br />Re: P.O. #OE PDA 08000000079 <br /> <br />Dear Mr. Busto: <br /> <br />As specified in the Statement of Work under Project Tasks and Deliverables for Task 2) of <br />Fabricating a Remotely Controlled Propane Cloud Seeding Dispenser for a Colorado Weather <br />Modification Program, the Desert Research Institute has successfully fabricated and tested one remotely <br />controlled propane cloud seeding dispenser. The completed unit is shown in Fig. I. When installed in the <br />field the crossbar with nozzle assembly will be mounted on a taller tower that also contains the weather <br />station, communications hardware and control box. Figur~ 2 shows propane being dispensed from one of <br />the two nozzles during a test. The propane is impacting a thermocouple that monitors temperature and <br />indicates when propane is being dispensed (temperature in the spray will be about -800 C). The propane <br />release rate was tested by weighing the propane tank prior to release, dispensing propane for a specific <br />time period, and then weighing the tank after release. The release rate was measured at 3.3 gal/hr per <br />nozzle, which is within the range of the 3.0-3.5 gal/hr rating for the nozzle size being used. <br /> <br />The propane dispenser will be disassembled and prepared for shipment to Colorado for <br />installation on the Grand Mesa in the late summer or fall of 2008. DRI will coordinate with eWeB and <br />Grand Mesa cloud seeding personnel to determine the exact location and date for installation. <br /> <br />An invoice for the costs incurred in completing Task 2 is attached. <br /> <br />Sincerely, <br /> <br />rJd.., tJ. 14r <br /> <br />Arlen W. Huggins <br />Project Manager <br /> <br />Cc; Maria Garretson (DR!), Vicki Hansen-Marks (DRJ) <br />Attachment: Invoice for Ta..<.;k 2 <br /> <br />2215 Raggio Parkway, Reno, Nevada 89512-1095 <br />Phone (775) 673-7300 Fax (775) 673-7397 <br />