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<br />9. Controlling Weather Modification Operations (continued) <br /> <br />the State Patrol, and field maintenance personnel in the seeded areas. <br /> <br /> <br />Changing weather conditions that would indicate the onset of potentially <br /> <br /> <br />severe or hazardous weatl~r conditions will result in the suspension <br /> <br /> <br />of seeding operations throughout the duration of these potentially <br /> <br />hazardous weather conditions, <br /> <br /> <br />Snowpack accwnulation will be monitored from snow survey <br /> <br /> <br />measurements as conducted by the Soil Conservation Service. Special <br /> <br /> <br />snow measurements may be available from selected high mountain sites <br /> <br /> <br />about January 1,2001 Regular snow measurement will commence for <br /> <br /> <br />all Bnow observation sites on February I, 2001 and the first detailed <br /> <br /> <br />analysis of snow accwnulations in the seeded areas will be completed <br /> <br /> <br />useing these measurements. Several mutually agreeable snow measuring <br /> <br /> <br />sites including the Snotel siles will be selecled throughout the seeded and adjacent areas to monitor the <br /> <br />seasons accumulation of snowpack <br /> <br />Evaluations of snowpack alld snowlllel L runoff in the springtime <br /> <br /> <br />indicate that minor floodJng and streum flow problems can exist <br /> <br /> <br />when late winter anowpacks reach 150 percent of normal. More sub- <br /> <br />stantial flooding problems can be anticipated when late winter snow- <br /> <br />packs in exceBS of 170 percent of normal melt off in the srpingtime. <br /> <br /> <br />Since this prograol is designed for reasonable levels of snowpack <br /> <br />enhancement for tin out.louk of ~ adequately abundant aununertime water <br /> <br />~upply for storagfd ulld use. we propo,tj~ tu ,tjllop~nd tleeding operations <br /> <br />in any major portIon of tt Heed1ng i.tr~il wheu ()n~ or IDOC~ of the <br /> <br /> <br />tollowiut) occurn:llccti lukcu 1'1 LAce: <br /> <br />q. When the average snowpack reaches 175 percent of normal <br /> <br /> <br />snowpack through December and 160 percent of, normal for January. <br /> <br /> <br />b. When the average snowpack reaches 150 percent of normal <br /> <br /> <br />snowpack during the month of February. <br /> <br />c. When the average snowpack reuches 140 percent of normal <br /> <br /> <br />snowpack during the month of March. <br /> <br />Seeding operations would continue in tile remaining mountain regions <br /> <br />under normal ope["ativ~ procc.uJretj. 'l'h1tj cumpurative normal for these <br /> <br />representative snow obs~rvaljon ~iles will he tl~ latest fifteen-year <br /> <br /> <br />average as published uy the Soil Con/:i~rvallol\ Service. <br />