Open Space Advisory Board Agenda and Packet 2009 08 12

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Louisville Police Department 992 Via Appia 5treet Louisville, Colorado 80027 Office 303.335.4633 Fax 303.335.4634 goodmab@ci.louisville.co.us To: CC: Louisville Open Space Advisory Board Joe Stevens, Director Bruce Goodman, Chief of Police I August 13,2009 Placement of Emergency Warning Sirens From: Date: Subject: In 2008, the Louisville City Council approved funding within the 2009 municipal budget for the purchase and installation of emergency warning sirens capable of reaching 90+% of the city's population in the event of a natural or human caused catastrophe. The sirens are activated by the Boulder Sheriff's Department Communications Center and can broadcast both siren and voice messages. The most likely use will be for serious weather alerts such as tornadoes and for hazardous materials accidents. The sirens are the Whelen WPS2910 which are omni-directional transmiting 360 degrees simultaneously rather than the acoustical highs & lows of the usual rotating sirens. Because of its exceptional broadcast pattern, three of these sirens work as well as four of the conventional rotating sirens. They will be mounted on 60 foot concrete poles buried with packed soil about ten feet deep. They are solar powered and require no external utilities. Because of the pole size, excavation and routine maintenance the pole locations must be accessible by heavy bucket trucks. The three locations were chosen based upon broadcast coverage, property ownership, accessibility, avoidance of utilities, and minimal disruption to the surroundings. :.- Harper Lake: Northwest corner of the parking lot near or at the east edge of the river rock area; about the location of the outhouse. :.- Pirates Park: North of the tennis courts. (Property is owned by the Boulder Valley School District and is contracted by the City of Louisville for recreation uses. The BVSD has tentatively agreed to amending the contract to allow the siren pending final review of all the terms and engineering specifications. :.- Coal Creek Golf Course Maintenance Area: South of the Coal Creek Trail and east of the concrete bunkers.