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<br />~ ~ <br /> <br /> <br />'- <br /> <br />3. OPERATIONS <br /> <br />During the course of the proj ect, cloud s,eed.ing was conducted on <br />twelve days in portions of nine stoms between JaIUlary 4 J 1978 and <br />February 9, 1978. Be'Cause of the nature of thle precipitation pattern <br />during the season, which was relatively frequent and often heavy, it <br />turned out that all the seeding was perfomed from the ground site at <br />Figueroa Guard Station and the aerial seeding mode was never initiated. <br />About mid-December stoms began affecting the c:ounty at frequent inter- <br />vals. This stonn pattern contilUled during the first half of January and <br />by the time approval for the aerial operations was received from Vanden- <br />berg (January 12) the watershed near the more populated areas was becom- <br />ing saturated. County Flood Control officials indicated a desire to <br />delay any aerial seeding but stated that the interior portions of the <br />county could tolerate considerably more precipitation. Therefore seeding <br />was limited to affect only those areas removed from the coast. <br /> <br />A dry period prevailed from January 20 through February 4 t followed <br />by a series of stonns beginning on February 5. Even though the watershed <br />had had some opportunity to dry out during the latter part of Jaroary, it <br />was still considered too wet to utilize aerial seeding as the February <br />stonns began. Ground seeding was again the source of seeding during the <br />February storms through February "9. A major stonn began affecting the <br />area on February 9, which continued into February 10. Seeding was con- <br />ducted until early evening on February 9 and then tenninated as it became <br />evident that even the interior portions of the watershed would become <br />saturated. This indeed did happen with the eventual filling of Cachuma <br />Lake. <br /> <br />A sUlllTlary of the seeding operations at the Figueroa Guard Station <br />site is provided. in Table 1. On the 12 days during which seeding <br />occurred, a total of 101 silver iodide pyrotechnic seeding flares were <br />ignited. During this period a total of 20,140 grams of silver iodide <br />were released into all or a portion of 22 convection bands. The seeding <br /> <br />3-1 <br />