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<br />9. Describe the Safe2uards to be Used bv the Operator to Prevent Substantial Harm to <br />Land. Water. People. Health. Safety. Property and the Environment <br /> <br />In accordance with the Weather Modification Association's "Standards for Conduct of <br />Individual Projects", North American Weather Consultants (NA We) developed Policies and <br />Procedures for the Suspension of Cloud Seeding Operations. These criteria have been utilized in <br />the conduct of numerous previous winter orographic seeding projects conducted in the Inter- <br />Mountain West. These criteria will be used in the conduct of the Upper Gunnison River Project. <br />These criteria are as follows: <br /> <br />NWS Advisory Procedures <br /> <br />9 <br /> <br /> <br />During periods of hazardous weather phenomena associated with both winter orographic <br />and convective precipitation systems it is sometimes necessary or advisable for the National <br />Weather Service (NWS) to issue special weather bulletins advising the public of the weather <br />phenomena. Each phenomenon is described in terms of criteria used by the NWS in issuing <br />special weather bulletins. <br /> <br />· Traveler's Advisory (TA) - This is issued by the NWS when one to four inches <br />of snow is expected to produce hazardous conditions, particularly in mountain <br />passes. <br /> <br />· Heavy Snow Warning - This is issued by the NWS when it expects snow <br />accumulations of four inches or more per 12-hour period or six inches or more per <br />24-hour period. <br /> <br />· Winter Storm Warning (WSW) - This is issued by the NWS when it expects <br />sudden drops in surface temperatures and heavy snow with significant blowing <br />and drifting. <br /> <br />· Flash Flood Warnings (FFW) - This is issued by the NWS in the event of heavy <br />rainfall rates (114 inch per half hour) associated with slow moving (less than 10 <br />knots) precipitation radar echoes, or radar echoes moving parallel to specific <br />drainage areas. FFW are generally issued, but not limited to, spring and summer <br />convective systems. <br /> <br />In advance of the above described weather warnings, the NWS at times may issue <br />weather "watch" bulletins. These "watches" delineate specific areas where atmospheric <br />conditions are favorable for the formation of possibly hazardous weather phenomenon and are <br />generally issued 12-hours in advance of the potential event. <br />