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5.6.11.    FOR TIA AND DMAFB ENVIRONS
   No , use of land, or tree may exceed the height limitations by the within the Environs (AEZ). Refer to official maps established. Certain uses are prohibited from these districts as noted below and as determined by the Federal Aviation Administration (FAA).
   A.   The are identified on the Environs (AEZ) Maps and are established as follows:
      1.   Tucson International
      The height limits around Tucson International are based on distances away from the established ends of runways. The mean sea level (MSL) elevations of the established ends of runways are as follows:
         a.   NE end of runway 21 is 2,567 feet MSL;
         b.   SW end of runway 3 is 2,561 feet MSL;
         c.   NW end of runway 11L is 2,575 feet MSL;
         d.   SE end of runway 29R is 2,641 feet MSL;
         e.   NW end of runway 11R is 2,583 feet MSL; and,
         f.   SE end of runway 29L is 2,660 feet MSL.
      2.   Davis-Monthan Air Force Base
      The height limits around Davis-Monthan Air Force Base are based on distances away from the established ends of runways and also on a conical or inclined surface extending outward and upward from the established runway elevation at a ratio of 60:1. The established ends of runway MSL elevations are as follows:
         a.   NW end of the NW/SE runway is 2,590 MSL; and,
         b.   SE end of the NW/SE runway is 2,705 MSL.
   B.   Height Measurement
   The height of a , , or tree is measured from the MSL elevation at the end of the runway to a point specified in Section 6.4.4, Height, or to the highest point of a tree. (See Figure 5.6-A.)
Figure 5.6-A: Height Measurement in
   C.   Conflicts in Heights
   Where two or more height restrictions are placed on a , the more restrictive height limit prevails. Section 6.4.4.C, Exceptions to Height, do not apply in the AEZ.
   D.   Prohibited Uses
    as defined in Section 11.4.2 are prohibited within the boundaries of the .
   E.   Variances
   Variances from the provisions of Section 5.6.11 are allowed as set forth in accordance with A.R.S. Title 28.
Figure 5.6-B: AEZ Base Map 1
Figure 5.6-C: AEZ Base Map 2
5.7.   ENVIRONMENTAL RESOURCE (ERZ)
5.7.1.   PURPOSE
   These standards are intended to recognize the value of Tucson’s resources, particularly the critical and sensitive wildlife habitat of eastern Pima County associated with public monuments, forests, and preserves. These standards relate to areas associated with Tucson’s public lands and preserves, including Saguaro National Park, Coronado National Forest, and Tucson Mountain Park. It is the intent of these standards to protect valuable habitat resources to the greatest extent possible. , with these public resources, is allowed. This overlay specifically serves to:
   A.   Recognize the social, economic, environmental, biologic, and cultural importance of Saguaro National Park and Tucson Mountain Park to the City of Tucson;
   B.   Buffer Saguaro National Park and Tucson Mountain Park from the impacts of new by allowing that is with preservation of critical wildlife habitat and the Park environs;
   C.   Conserve certain designated washes that extend from the Parks as areas of natural and scenic resources and provide valuable wildlife habitat;
   D.   Complement the City of Tucson Interim Watercourse Improvement Policy that provides for flood control,   , and groundwater recharge through the preservation of designated washes in natural and undisturbed states; and,
   E.   Assist in implementing the policies that call for the preservation of Tucson’s significant natural areas along designated watercourses where identified in adopted area and neighborhood plans.
5.7.2.   APPLICABILITY
   A.   Areas Mapped
    that may contain are shown on a series of maps approved by the Mayor and Council called the Environmental Resource Overlay Maps (ERZ Maps). The ERZ Maps include all along the subject washes that may contain habitat, including those that are not vacant. These maps are based on the Critical and Sensitive Wildlife Habitat Map that the Mayor and Council adopted by Resolution #15149.
   B.   
    is associated with along the following washes and their tributaries as shown on the ERZ Maps: 1) Agua Caliente; 2) Ajo; 3) Anklam; 4) Camino de Oeste; 5) Coronado ; 6) Cuprite; 7) Enchanted Hills; 8) Escalante; 9) Este; 10) Fagan; 11) Flato; 12) Franco; 13) Greasewood; 14) Julian; 15) North Fork ; 16) Petty Ranch; 17) Race Track; 18) Reyes; 19) Rincon Creek; 20) San Juan; 21) Silvercroft; 22) South Fork ; 23) Summit; 24) Tanque Verde Creek; 25) Thomas Sousa; 26) portions of the West Branch of the Santa Cruz; and 27) West Speedway (Painted Hills).
   C.   New
   New that occurs on or proposed that include property designated as an ERZ wash are reviewed for compliance with these standards in accordance with Section 3.3.3, PDSD Approval Procedure.
   D.   Designation, Amendment and Change of Boundaries for ERZ Washes
   Designations of new areas subject to this section and changes to existing designations are processed in accordance with Section 3.5, Rezoning (Change of Zoning) Procedure. For designation of new area within the , the proposed designation shall be reviewed by the Stormwater Advisory Committee (SAC) and Stormwater Technical Advisory Committee (STAC) prior to the public hearing before the Zoning Examiner. The recommendations of the SAC and STAC are forwarded to the Zoning Examiner prior to the public hearing.
   E.   Approved
   Where a recorded shown on the ERZ Maps is resubdivided, it shall comply with these standards.
   F.   Annexation
   As annexation occurs, additional or extensions of may be added to the ERZ Maps.
   G.   Exceptions
   The ERZ standards do not apply to the following:
      1.   Any single- residence or other existing as of July 3, 1990, or any expansion of up to 25% of either an existing residence or other ;
      2.   Any or to be developed with one single- residence where all and the residence and any are located outside of the ;
      3.   Any that was recorded prior to August 3, 1990, as long as:
         a.   Substantial construction occurred within five years of August 3, 1990; and,
         b.   Construction occurs in accordance with the approved .
      4.   Where these standards affect a that is also subject to the Hillside Development (HDZ) standards, these standards do not apply as long as there is no encroachment into the 100-year floodplain.
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