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ESN displays the call routing boundaries used at 911 call dispatch centers. The attributes consist of the unique combination of law enforcement, fire department/medical response and the Public Safety Answering Point (PSAP).
Lineage: Update with Golder Ranch and Green Valley 08-18-2010
Mescal FD on E181638 9-28-2010
Rincon Valley FD 10-7-2010
Rincon Valley FD 10-15-2010
New ESN 034 with Oro Valley Annex
Rural Metro/Helmet Peak/Green Valley update with change in Three Points Fire District layer 11-08-2010.
Green Valley FD for Resolution 2010-7 (ESN041) 11-16-2010
NW for Saguaro Forest Annexation (ESN037) 20110201
NW Annex for Saguaro Forest Dr 03082011
10115 N Blue Bonnet Rd. to ESN016 2011-03-15
ESN 221 & ESN 222 added.(no fire service area
ESN 222 defaults to ESN003 2011-04-26
ESN 221 changed to ESN016 with Rural Metro for 60 days 2011-5-03
GRFD La Cholla Annex 06-15-11
UA parking and a flat house 06-23-11
Changed ESN221 to ESN016 06-30-11
Changed ESN016 to ESN 221(Rillito Vista Subdivision)07-06-11
Update on GVFD 08/12/11
RV and NW changes 09/06/2011
update on no fire service area 09/29/2011
Back to RMFD response from No response 10/03/2011
Rincon Valley FD 11/09/2011
Spatial Domain: Pima Co
Rectified: parcel
Maintenance Organization: PC ITD GIS
Maintenance Description: Kaoru Johansen updates this feature class in File Geodatabase using topology tool. ESN boundary change requests come from COT Communications department. The boundaries are determined by parcels, streets, jurisdictional boundaries, PLSS Section boundaries, and digital orthophotos.
Maintenance Frequency: Varies
Maintenance Format: Shape
Primary Source Organization: City of Tucson Communications Dept.
Primary Source Document: ESN_PIMA
Primary Source Date: 2005
Primary Source Format: Shape
GIS Contact: Kaoru Johansen |