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<br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br /> <br />TABLE OF CONTENTS <br /> <br />Section <br /> <br />1.0 INTRODUCTION .u...........uu_..........u.m......_.._............uu_....Uuu.uu...........m..... I <br /> <br />2.0 FEASIBILITYIDESIGN STUDY .....u_uu.......uuu_........._uu........_..muu._...uuum 2 <br /> <br />2.1 Climatological Precipitation Information .........U.muu...._u.._uu.._.u..umu 2 <br /> <br />2.2 Storm Types ................_.._........._....._........_u._._.......uu_............u..u.._...u_..._ 3 <br />2.3 Frequency of Significant Storm Events .....u.uu.........u.u.u..u.........._.....u. 4 <br />2.4 Analysis ofthe Significant Storm Events u_uu......u..uuu.....Um_uu_...uuu_ 5 <br />2_5 Atmospheric Stability ...u..........uu_u........uu_._....._.uu_u......uuuu_uuuu.u 18 <br />2.6 Cloud Seeding Project Design _.u.........uu...........u.uu......m_.u_m..u.u..u. 20 <br />2.6.1 Proposed Target Area _u.uuu_.u.u....._uu_..uu....uuuu................... 21 <br />2.6_2 Operational Period u........u..........._............u_..u............._..uuu_.u. 21 <br />2.6.3 Seedable Periods ......u_u.........._u...........uu...........umu.._.........._.u 23 <br />2.6.4 Silver Iodide Seeding Generators .._m............_uu............._u_u_u.. 23 <br />2_6.5 Operational Decision Making ._m............u.._u......._..uu......u....... 26 <br />2.6.6 Proposed Seeding Suspension Criteria uu......u_u_u.............._uuu 26 <br /> <br />2.7 Summary....... u.._............ _............. u. ._........ u. _........._ _. _ u.............. _. u_ _....... 29 <br /> <br />3.0 PERMITTING PROCESS AND PROJECT SET-UP uu...u...uuuu..............u..._ 30 <br /> <br /> <br />4.0 OPERATIONS ..........u _u........... u' _............ u ._............_ _........ _. _.. u_ _......... u... _....... _ 33 <br /> <br />4.1 Operational Procedures u............_u._......_u_u.._......_uuu.......uuu_uu...._uu. 33 <br />4_2 Operational Summary ....uuuu........_..u..........._..u_._.._....u..u........uu_u...u 40 <br /> <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br /> <br />5_0 <br /> <br />EVALUTATIONS OF SEEDING EFFECTIVENESS ....uuu_.........._uu_........_._ 44 <br /> <br />5_1 Precipitation Analysis ....uu_.............._............_.u_..........u.._._....u.u.......... 46 <br />5_1.1 Control Area Precipitation Gauge Sites ..._..uuu......uu._......_uu... 47 <br />5.1.2 Target Area Gauge Sites ........_................._uu......_uu....._.._m...m_ 52 <br />5.1.3 Regression Equation Development, February - March Period.. 55 <br />5_1.4 Precipitation Evaluation Results ....u_...u_u......_u__u_u..uu_u....u_.. 56 <br />5_2 Snowpack (Water Equivalent) Analysis .............u_u_......._u_.......uu...u.u 57 <br />5_2.1 Regression Equation Development um._......um_......._u................ 59 <br />5.2.2 Evaluation Results (Snowpack) u_.............u_u........_u......_u....u._. 62 <br />5_3 Potential Seeding Impacts during the First Half of April ....._u_u_...._._._.. 62 <br />SA Summary of Precipitation and Estimated Seeding Effects and <br /> <br />Discussion....... _ u.. u _._...... _' u. u _......... u..........._. _..... _. _.... u.. _....._... u........ _.. 63 <br />5.5 Potential Seeding Impacts at the Rocky Mountain Biological <br /> <br />Laboratory.... _..... _. _.......u _.............. _. _u.._....._.._.. u....... _.. u. _.. _. _....... _........ u 71 <br />5.6 Potential Downwind Effects _uuu_u....uuu........_..uu_.._uu_..._....u_u.....uu_ 73 <br />