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<br />DRAFT <br /> <br />DRAFT <br /> <br />7. An appropriate divisor for the law enforcement radio operators in the Ramsey <br />County Sheriffs Office dispatch center, the Maplewood dispatch center and the <br />White Bear Lake dispatch center is seven since all of these radio operators take <br />calls from the public, operate the radio, and provide a voice database lookup <br />service. <br /> <br />re <br /> <br />8. The busiest eight-hour time period of the day in Ramsey County public safety <br />dispatching is from 1500 through 2200 hours. The next busiest eight-hours are the <br />0900 through 1400 and 2300 through 2400 hours and that is approximately 91% as <br />busy as the busiest time period. The least busy time period is the 0100 through <br />0200 hours and the 0700 through 0800 hours and that is approximately 67% as busy <br />as the busiest time period. For staffing considerations, traffic during the 0300 <br />through 0600 time periods can be ignored. <br /> <br />9. An acceptable shift factor for determining total staff needed is 1.75 times the number <br />of telecommunicators and radio operators needed at workstations. <br /> <br />Using the criteria described above, for the four existing PSAPs in Ramsey County: <br /> <br />SL Paul PSAP <br /> <br />Busy hour telephone calls 354 @ 82 seconds; use 354 calls @ 66 seconds <br />Next busy eight hours, 322 calls @ 66 seconds <br />Least busy period, 237 calls @ 66 seconds <br /> <br />fe <br /> <br />Grade of service of 90% answered in ten seconds: <br />Busy hour = 10 Telecommunicators <br />Next busy hour = 9 Telecommunicators <br />Least busy = 7 Telecommunicators <br />Total 26 times 1.75 = 45.50 Telecommunicators needed on staff <br /> <br />Busier hour events, busiest time, busy month eVents = 106, use 91 <br />Next busy hour events = 96, use 82 <br />Least busy = 64, use 54 <br /> <br />Grade of service, wait to talk on main dispatch pathway less than 10 seconds, 90% of time <br />Busy hour = 3 police radio operators <br />Next busy hour = 3 police radio operators <br />Least busy = 2 police radio operators <br />Total = 8 times 1.75 = 14 police radio operators needed on staff <br /> <br />Busy hour = 3 fire radio operators <br />Next busy hour = 3 fire radio operators <br />Least busy hours = 2 fire radio operators <br />Total = 8 fire radio operators times 1.75 = 14 fire radio operators needed <br /> <br />Busy hour = 2 information radio operators <br />Next busy hour = 2 information radio operators <br />Least busy hours = 1 information operator <br /> <br />. <br /> <br />PSAPModelComparisonl.8.doc ] 5 <br />