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  • Pima Prospers

    The Board of Supervisors adopted Pima Prospers on Tuesday, May 19, 2015.   They adopted the recommendations from the Planning and Zoning  Commission with several changes to land uses.    All of the adopted changes will be reflected at this site in the coming days.  An Executive Summary of the plan will be available next month.

    Pima Prospers is the product of an nearly two year planning process, including extensive community involvement, the engagement of all levels of government, the coordinated efforts of various County departments and the review and support of community leaders, residents, business owners and stakeholders, adjacent jurisdictions, and regional and state agencies. We look forward to the next 20 years, recognizing that in Arizona, county plans are required to be updated every 10 years.

    The Board of Supervisors also adopted the Planning and Zoning Commission's recommendations for Major Streets and Scenic Routes Plan.  Those updates will be available on that webpage shortly.  

    Download Policy Plan
    (Printer-Friendly version)

    Navigating this site

    There are many parts  to Pima Prospers divided up by chapters.   
    To view the plan online use the links and drop down arrows by each chapter and goal below.   
    To view the entire pdf. version, you may download the policy plan by clicking the link at right (note it will print over 500 pages.)   Maps and special policies are at the bottom of this page. 
    To view the appendix, you may click on the links for each.  It is a pdf of the document. Appendix A Background and Current Conditions, Appendix B Implementation, Appendix C Public Participation, Appendix D Fiscal Analysis and Appendix E Glossary.pdf have been updated.  To view information on Major Streets and Scenic Routes update is at this link.


    Plan Introduction

    Pima Prospers reflects a very different format than past plans, partly because the content has been greatly expanded and because we have taken a more comprehensive approach, since so much of what makes up a county and what county staff does are very much interconnected and interrelated.
    A printer friendly version is available.
    Land Use

    Use of Land

    The overarching goal of this chapter is to guide land use, housing, conservation, and community design decisions consistent with the plan's vision and based on community input. This chapter advances the welfare of our people and our community by creating convenient, equitable, healthy, efficient and attractive environments.
    A printer friendly version available.
    Physical Infrastructure

    Physical Infrastructure

    This chapter provides goals and policies related to the efficient use of existing and planned infrastructure needed to support current and future populations. Each of the topics in the chapter either cover a part of the county's critical infrastructure, connect people and goods or both. 
    A printer friendly version is available.
    Human Infrastructure graphic

    Human Infrastructure

    This chapter provides goals and policies related to the efficient provision of existing and future services needed to support the current and forecasted populations. While none are required by state law, they all play a significant part in how our county functions.
    A printer friendly version is available.
    Economic Development graphic

    Economic Development

    This chapter proposes goals and policies on such subjects as promoting economic development, tourism, business climate, and the arts. It will be aligned with the County Administrator's 2015-2017 Economic Development plan once it is completed this year. 
    A printer friendly version is available.
    Cost of Development graphic

    Cost of Development

    This section establishes the goal and policy framework for developing implementation measures that will result in public-private cost sharing of capital facilities and services needed to serve new development.
    A printer friendly version is available.

    Comprehensive Plan Structure

    2.1 Pima Prospers Comprehensive Plan Structure

    The Pima County Comprehensive Plan includes this Policy Plan, five appendices and an executive summary as outlined in Figure 1.    A printer- friendly version is available. The Pima County Comprehensive Plan includes:
    • The Executive Summary (loose-leaf); (Note to be completed at end of the process);
    • The Policy Plan (Vision, Goals, Guiding Principles, Maps and Policy Framework and Implementation Measures);
    • The Background and Current Conditions Volume (Appendix A);
    • The Implementation and Plan Monitoring Volume (Appendix B);
    • The Public Participation Plan (Appendix C);
    • The Fiscal Impact Analysis Study (Appendix D) (Note: The study was conducted at a level suitable for an overarching Comprehensive Plan); and
    • The Glossary and Sources (Appendix E).
    Appendix A: Background and Current Conditions. Serves as the support for the preparation of the policy framework and implementation sections of the County Comprehensive Plan.
    Appendix B: Implementation. Includes the implementation measures prioritized by lead department, time-frame and available funding mechanism. It also includes strategies for plan monitoring and evaluation of plan progress.  (Note: Appendix B contains the draft work program.  The final initial work program will be brought back to the Board for ratification after plan adoption, and it will be annually monitored and updated as described later in the plan.)
    Appendix C: Public Participation. Outlines the Public Participation Plan adopted by the Board of Supervisors early in the planning process and includes a summary of public outreach efforts.  All electronic and posted correspondence are included.
    Appendix D: Fiscal Impact Analysis. Analyzes economic/fiscal impact of land use plan with relative to cost and available resources.
    Appendix E: Glossary and Sources. Includes glossary of terms and sources.

    2.2 Pima Prospers Policy Plan Structure

    Figure 2 shows Pima Prospers Policy Plan structure. The Comprehensive Plan includes the County’s vision, guiding principles, goals, policies and implementation strategies necessary to maintain and enhance Pima County’s economy, environment and communities. Implicit in those goals will be challenges and opportunities associated with:
    • Demographics and Socioeconomic Conditions
    • Use of Land
      • Land Use 
      • Focused Development Investment Areas
      • Open Space
      • Environmental
      • Housing and Community Design
      • Cultural Resources
    • Physical Infrastructure Connectivity
      • Mobility/Circulation
      • Water Resources
      • Energy
      • Wastewater
      • Environmental (Air Quality and Solid Waste)
      • Communications
      • Public Buildings and Facilities
      • Trails
      • Flood Control/Drainage
      • Countywide Infrastructure Concurrency
    • Human infrastructure Connectivity
      • Health Services
      • Public Safety and Emergency Services
      • Parks and Recreation
      • Workforce Training
      • Arts and Entertainment
      • Library Services
      • Animal Care
      • Food Access
    • Economic Development and Jobs
      • Business Retention, Expansion and Attraction
      • Tourism as an Economic Engine
      • Positive Climate for Business
      • Our People as an Economic Driver
      • Arts Districts as Tools for Economic Development
      • Repair and Restore our Streets and Highways
      • Construction as a Stimulus of Our Economy
    • Cost of Development and Available Resources

    2.2.1 Jurisdictions and Planning Areas

    Pima County consists of several jurisdictions, of which the city of Tucson is the largest and is the county seat. The vast majority of the county population lies in and around Tucson, filling much of the eastern part of the county. Tucson, Arizona's second largest city, is a major commercial and academic center.  The other jurisdictions are the Town of Oro Valley, the Town of Marana, the Town of Sahuarita, and the City of South Tucson. There are several unincorporated communities in Pima County such as Ajo, Why, Green Valley, Catalina, Robles Junction, Arivaca, and Picture Rocks.  The County also includes two sovereign nations:  The Tohono O’odham Nation and the Pascua Yaqui Tribe.  The Tohono O’odham Nation comprises the largest land mass for Central Pima County and also includes the physically separate San Xavier District in the Tucson Metro Area. The Pascua Yaqui Tribe has a growing land ownership in the southwest part of the Tucson Metro Area. The rest of the county is rural in nature. Over one third of the County’s population lives in the unincorporated area.

    Consistent with the Pima County Infrastructure Study undertaken in 2011, thirteen planning areas have been delineated for the purpose of distinguishing opportunities and challenges for land use, the provision of services and infrastructure, and economic development. The planning areas used for this study included incorporated as well as unincorporated areas.  They include:
    1. Avra Valley
    2. Tucson Mountains
    3. Southwest
    4. Altar Valley
    5. Upper Santa Cruz
    6. Mountain View
    7. Southeast
    8. Central
    9. Catalina Foothills
    10. Rincon Valley
    11. Tortolita
    12. San Pedro
    13. Western Pima County*

      *Note: Planning Area 13 was not a part of the 2011 Pima County Infrastructure Study but is included in Appendix A.

    For purposes of land use analysis, only the unincorporated portions of these planning areas were considered. Exhibits 2.2.1 and 2.2.2 show planning areas within the County.

    Planning Area West Planning Area East

    2.3 Using the Document

    Chapter 1 of this Comprehensive Plan provides the Vision for the plan, the overall organizing principle for the plan, and some context for its content.

    Chapters 3-5 are organized by element within that overall topic area.  Within each element are goals, which tie back to the Vision as expressed in Chapter 1.  Chapter 6 and 7 are organized exactly the same but each is a specific element of the plan by itself.  Each goal has one or more policies which represent policy guidance to the County staff.  Under each goal, there may be implementation strategies particularly when a new action is to be undertaken.

    Not all policies have specific implementation strategies, especially if the policies refer to items that are currently being implemented or are ongoing.  To avoid repetition, an implementation strategy may implement multiple policies, perhaps even from differing elements.  Appendix B will serve as a working document reflecting completed work and modified work for budgetary and other reasons through the lifespan of the plan.

    Chapter 8 includes the land use legend for the land use maps and the land use maps themselves.  Chapter 3 in the Environmental Element also includes the Maeveen Marie Behan Conservation Lands System, and Chapter 4 in the Flood Control and Drainage Element also includes the 13 Regional Hydrology Maps, both sets of which are to be used in conjunction with the land use maps.  Maps are considered plan policy in addition to the written word.

    Chapter 9 contains two separate documents:  Special Area Policies and Rezoning Policies. Special Area Policies are general policies that only apply to specific areas of the county.  Most of these are carried over from previous county plans but are nonetheless valid.  Rezoning policies apply to a specific parcel or parcels of land and are usually the result of a previous comprehensive plan amendment.  Both Special Area and Rezoning Area policies are identified by number in the appropriate locations on the land use maps in Chapter 8.

    Chapter 10 contains guidance and direction as to how this Comprehensive Plan is to be implemented.

    Special Area Policies - General Location and Policy

    Special Area Policies (SAP) are one of the two types of plan policies, along with rezoning policies covered in a section of this chapter, which apply to only portions of the Comprehensive Plan area.
    The full version of Chapter 9 with all policies can be found at this link. A printer friendly version is available.

    SAPs apply to sites typically composed of multiple parcels that share a unique physical feature or location over a relatively large area. They overlay larger areas such as transportation gateways into metro Tucson, significant floodplains, or areas covering a significant portion of a planning area carried forward from a previous (rescinded) area, neighborhood, or community plan.

    They are used to help guide the creation of rezoning conditions, but also may serve as general policy for the area they cover such as the Community Development Target Areas. The list of special area policies reflects minor revisions due to technical corrections and updating.

    Special Area Policies are labeled as “S” and are numbered individually on the plan’s land use maps. In parenthesis next to the policy is the referenced map in which the special area lies.

    Note: for this Planning and Zoning Commission public hearing draft, a number of special area policies in the current comprehensive plan are proposed for deletion due to annexation, site is built, policy consolidated into another policy, no building is proposed due to county ownership, or another reason.  These are noted.  Lastly Special Area Policies S-31 to S-37 are new to this update. Click on their title to have the text slide down. In the final version of the plan, the special area policies will be renumbered, eliminating any deleted policies.  To read  the text of the policies that are recommended for deletion, go here.

    Key to abbreviations Comprehensive Plan Planning Areas

    Abbreviation Planning Area
    ALV Altar Valley
    AV Avra Valley
    CF Catalina Foothills
    C Central
    MV Mountain View
    RV Rincon Valley
    SE Southeast
    SP San Pedro
    SW Southwest
    T Tortolita
    TM Tucson Mountain
    USC Upper Santa Cruz
    WPC Western Pima County


    S-31 Outdoor Shooting Ranges (Multiple Maps delineated by a star)

    General Location
    The location of any existing outdoor shooting range governed by Arizona Revised Statutes Sections 17-601 through 605, as may be amended.


    ARS Sections 17-601 through 605 set forth state law regarding noise, noise buffering and attenuation, hours of operation, standards and certain exemptions for law enforcement and military uses. Local jurisdictions are generally preempted from creating their own ordinances governing outdoor shooting ranges. However, the county is required to provide for certain buffering or noise attenuation devices.
    The county shall ensure that any new development rezoned for residential use or any other use that includes a school, hotel, motel, hospital or house of worship within one mile of an existing qualifying outdoor shooting range must provide noise buffers or attenuation devices in compliance with state statute; and qualifying outdoor shooting ranges that are located in areas that are zoned for residential use or any other use that includes a school, hotel, motel, hospital or church shall not operate from 10:00 p.m. through 7:00 a.m.

    S-32 Military Electronic Range Protection (MV)

    General Location
    Southeast corner of Pima County.


    ARS Section 37-102H requires the State Land Department to keep a map of military electronic ranges. Within a defined and geographically identified military electronics range, ARS Section 11-818 requires the county to provide notice to the installation commander of an application to rezone property, issue a building or development permit, subdivide the property or application for a minor land division. The county shall provide the notice required under state law.

    S-33 Community Development Target Areas (Represented by an asterisk on Multiple Maps)

    General location and description
    Targeted areas designated to receive priority for available US Housing and Urban Development (HUD) entitlement grant funding for community revitalization and economic development activities including, but not limited to: housing rehabilitation, public facilities, infrastructure improvement, and the provision of public services. Areas are delineated utilizing specialized Comprehensive Housing Affordability Strategy (CHAS) Census data provided by HUD and encompass incorporated communities were over 48.1% of the households are considered low-income earning below 80% of the area median income (AMI) for Pima County.

    1. Refer to Goals 2-4 of Section 3.2 Focused Development Investment Area Element of this plan.

    S-34 Revitalization Opportunity Development Corridors (SE)

    General location
    On either side of S. Alvernon Way and S. Palo Verde Road in unincorporated Pima County between 29th Street on the north and Interstate 10 on the south.
    Areas to develop and implement public and private collaborative strategies and investments that aim to attract private sector investment to grow jobs, businesses and services; expand the tax base; and, support the revitalization of the corridors into a viable mix of uses that directly promote the stabilization of adjacent neighborhoods as safe, vibrant and sustainable. The purpose is to promote investment into older, more visibly distressed, urban commercial corridors and rural main streets.

    1. Refer to Goal 3 of Section 3.2, Focused Development Investment Areas Element of this plan.

    S-35 Retail Enhancement Contribution Areas (SW)

    General location
    Within a four miles radius of the intersection of Ajo Way and Kinney Road


    For development of retail stores in excess of 40,000 square feet within the area described, operating constraints and an enhancement contribution as outlined in a development agreement recorded at Book 12939 Pages 7309-7306 (as may be amended) shall be required as a condition of rezoning. Operating protocols shall be appropriately employed to ensure applicability in comprehensive plan amendments, subdivision review or site development review as necessary.

    S-36 Sahuarita Southeast Conceptual Land Use Plan

    General Location
    Lands east of the Town of Sahuarita, generally south of Pima Mine Road, west of Wilmot Road, north of the Santa Rita Experimental Range consisting of a large block of undeveloped state trust land and adjacent private lands.

    Policy The state trust lands (along with adjacent private holdings) are proposed for urban scale development by the Town of Sahuarita if they are annexed.  Development is not expected within the lifespan of the County's 2014 Comprehesive Plan.  If the land is to be planned and zoned while under County jurisdiction, the block of state trust land must be brought forward as one specific plan and is so designated on the land use map as Planned Development Community.  The adjacent private lands, as they are mostly split into lots, under multiple ownership and not conducive to a specific plan, are designated on the land use map with a land use commensurate with their existing zoning.

    S-37 Rocking K specific Plan Related Parcels

    General Location
    South of Old Spanish Trail west of Camino Loma Alta, north of East Voyager Road alignment adjacent to Rocking K Specific Plan.

    These parcels are included in a Rocking K Specific Plan block plat and are intended to be developed in conjunction with the Rocking K specific Plan utilizing transfers of development rights from elsewere within the specific plan, consistent with the land use designations as described in Chapter 8, Land Use Legend.

    Rezoning Policies - General Location and Policy

    Rezoning Policies – General Location and Policy

    Rezoning Policies (RP) apply to discrete areas composed of one parcel or a limited number of parcels and frequently reflect either an approved, individual plan amendment or a policy carried forward from a previous (rescinded) area, community, or neighborhood plan.

    Rezoning policies are labeled “RP” and are numbered individually on the plan map. In parentheses next to the policy is the referenced map in which the rezoning policy lies.

    Rezoning Policies for properties for which a specific plan has been adopted but tht have not been completely developed continue to be included in this chapter.  These particular rezoning policies are reference solely for historical background for the specific plan, if there ever should be a question as to the source of either the language in the specific plan, the conditions of a specific plan (where they exist) or development agreement.  They also may be referenced by staff or applicant should a change in the content of a specific plan, requiring public public hearing, be sought.  However, once a specific plan is adopted, they have been supplanted by the specific plan or condition thereof.

    However, because specific plans have no expiration date, development may occur over a lengthy period of time and changes may also be requested long into the future, the original policy intent may prove informative so the policy remains in the chapter. 
    [Note: Strongly note that for denoted specific plan related rezoning policies, the specific plan documents, conditions of zoning if any, and development agreements as they exist or may be amended govern the land use of the property, not the applicable rezoning policy]

    [Note: RP- 138 through RP 142 are new to this update. All other rezoning policies are included from the current comprehensive plan. ]
    [Note: For this Planning and Zoning Commission public hearing draft: a number of rezoning policies in the current comprehensive plan are proposed for deletion due to annexation, site is built, no building is proposed due to county ownership, targeted for deletion by the Regional Wastewater Reclamation Department, or another reason.  These are noted.  In the final version of the plan, the rezoning policies will be renumbered, eliminating any deleted policies.]
    To read all of the existing rezoning policies, download this section of the 2001 plan.

    Read the text of the policies that are recommended for deletion.

    RP-138 River / Oracle Mixed Use Area (CF)

    General Location
    Southeast corner of N. Oracle Road and W. River Road, in Sections 13 and 24 of Township 13 South, Range 13 East.

    Redevelopment of 40-acre manufactured home park.

    1. The property owner shall provide a plan for relocation of residents.
    2. The property shall be planned to create a mix of residential and non-residential uses.

    RP-139 N. Thornydale Rd/W Overton Rd (T)

    General Location
    Southeast corner of N. Thornydale and W. Overton Road in Section 12 of Township 12 South, Range 13 East.

    1. Notwithstanding the objective and range of residential density allowed in the Medium Intensity Urban (MIU) planned land use category, a rezoning request for a non-profit retail outlet on parcel 225-02-027j shall be deemed in conformance with the plan.

    RP-140 W. Ajo Highway/Sunset Blvd (SW)

    General Location
    North side of W. Ajo Highway west of S. Sunset Boulevard alignment in Section 35 of Township 14 South, Range 12 East.

    1. Notwithstandig the objectives and range of allowable residential density as described in the Medium Intensity Urban (MIU) planned land use category, use is limited to non-residential offices.
    2. North facing elevations shall be residential in appearance.
    3. No parking lot lighting above that allowed in residential districts.
    4. Access will be from W. Ajo Highway only, with no access to or from Illinois St.
    5. Parking and services will be located on the west part of property.

    RP-141 South Nogales Highway/Lumber St. (SE)

    General Location

    East of Old Nogales Highway and immediately east of the Union Pacific Railroad right-of-way, north of Lumber St., parcel 303-15-009A, in Section 18 of Township 16 South, Range 14 East.

    1. Notwithstanding the objectives and range of residential density allowed in the Medium Intensity Rural (MIR) planned land use category, a request for a rezoning for a single residence on parcel 303-15-009A shall be deemed in conformance with the Plan.

    RP-142 Silverbell Rd/Sweetwater Dr. (TM)

    General Location
    Northwest corner of N. Silverbell Road and E. Sweetwater Drive in Section 20 of Township 13 South, Range 13 East, in the Tucson Mountains Planning Area.

    1. For any new residential rezoning, follow cluster principles to preserve natural features including washes.

    Chapter 8: Land Use Legend and Maps

    8.1 Preface and Map Interpretation

    The Land Use Intensity Legend included in this chapter complements the Regional Plan Policies provided throughout this comprehensive plan as well as the Special Area and Rezoning Policies included in Chapter 9. It is to be used in conjunction with the Land Use maps in Section 8.2. The following planned land use intensity categories are designated on the Pima County Comprehensive Plan (Plan), which was initially adopted by the Pima County Board of Supervisors on October 13, 1992, revised on December 18, 2001 and the most recent version update was adopted on [insert date of adoption of this plan]. Land uses are only shown for land in unincorporated Pima County.
    ( Land Use change recommendations from the Planning and Zoning Commission are linked.)

    Unless otherwise noted, references to code chapters or sections are to the Pima County Zoning Code as of the date of adoption of this plan or as may be amended.

    Please refer to section 10.4 of the Administration chapter of the Plan for how the rezoning process, conditional use process, and the Transfer of Development Rights (TDRs) relate to the plan, open space requirements, and the calculation of possible densities and uses for properties affected by resource areas on Regional Hydrology Maps (Section 4.9 of the Physical Infrastructure Chapter).

    Land Use Legend

    The Land Use Intensity Legend is composed of a number of “urban/suburban”, “rural” land use and general categories. Urban/suburban designations are usually used in the metropolitan Tucson, Green Valley and certain unincorporated communities. Rural land uses are generally used in exurban and rural locales. General categories can be found throughout the unincorporated county. Each category includes a description of the objectives and the types of uses intended for that category. In addition, most categories that allow residential uses include a minimum and maximum gross density, defined as residences per acre (RAC). Only land area zoned and planned for residential use, or open space areas not including golf courses, shall be included in gross density calculations.

    Effective densities throughout the rezoning process may be constrained by hydrology, open space requirements, overlay zones, cultural resources and many other factors.

    A. Urban/Suburban Intensity Categories

    The following land use intensity categories shall be applied to designate planned land use within urban and suburban areas only:
    1. Community Activity Center (CAC)
      1. Objective: To designate medium and higher intensity mixed use districts designed to provide a full range of goods and services; office and medical uses; hotels; research and development opportunities; educational and institutional uses; and other similar uses as described in the Campus Park Industrial (CPI) zoning district (Section 18.49); and compatible medium to higher density housing. Individual rezoning requests do not necessarily have to be a mixed use project; however, the application must demonstrate how it serves to create or enhance the mixed use character of the designated activity center as a whole.

        Larger centers may include a regional mall. Smaller centers may provide goods and services needed on a more frequent basis. These may include a major supermarket, discount department stores, large variety stores, or specialty stores such as a hardware/building/home improvement stores. Community Activity Centers may be located on major arterial roadways with access to public transportation. All centers will have direct pedestrian and bicycle access to surrounding neighborhoods. Community Activity Centers may range from 25 acres to up to 100 acres or more in size depending on the area served and services provided.
      2. Residential Gross Density:  Residential gross density, if any, shall conform to the following:
        1. Minimum – 6 RAC
        2. Maximum - As allowed by the requested conforming zoning district.
      3. Residential Gross Densities for Developments Using Transfer of Development Rights (TDRs):

        Projects within designated Receiving Areas utilizing TDRs for development  shall conform to following density requirements:
        1. Minimum – 6 RAC
        2. Maximum – 18 RAC
    2. Neighborhood Activity Center (NAC)
      1. Objective: To designate lower intensity mixed use areas designed to provide goods and services within  or near residential neighborhoods for day-to-day and weekly living needs. Neighborhood Activity Centers provide lower-intensity commercial services. For example a grocery market may be the principle anchor tenant along with other neighborhood services, such as a drugstore, variety/hardware store, self-service laundry, , and bank. The center may include a mix of medium-density housing types. Neighborhood Activity Centers are generally less than 25 acres in size. Larger centers provide opportunity for more of a mix of intensive non-residential uses and medium-density residential uses, and are to be located on arterials. Smaller mixed use centers may contain medium density residential uses and may be located along collector or arterial streets. All centers will have direct pedestrian and bicycle access to the surrounding neighborhoods. Individual rezoning requests do not necessarily have to be a mixed use project; however, the application must demonstrate how the project serves to create or enhance the mixed use character of the designated activity center as a whole.
      2. Residential Gross Density:  Residential gross density, if applicable, shall conform to the following:
        1. Minimum – 5 RAC
        2. Maximum - 12 RAC
      3. Residential Gross Densities for Developments Using Transfer of Development Rights (TDRs).
        Projects within designated Receiving Areas utilizing TDRs for development shall conform to the following density requirements:
        1. Minimum – 5 RAC
        2. Maximum – 8 RAC
    3. Multifunctional Corridor (MFC)
      1. Objective: To designate areas for the integrated development of complementary uses along major transportation corridors. The MFC designation serves a similar purpose as the CAC plan designation. These areas contain commercial and other non-residential use services, research and development and similar uses (as delineated in the CPI zoning district) and medium to high density residential clusters in a linear configuration along major transportation corridors. Potential adverse impacts of strip commercial development are mitigated through application of special design standards, in the zoning code and design manuals such as standards for access management, building setbacks, open space, signs, parking, and landscaping. Residential Gross Density: Residential gross density, if applicable, shall conform to the following:
        1. Minimum – 6 RAC
        2. Maximum - As allowed by the requested conforming zoning district.
        Residential Gross Densities for Developments Using Transfer of Development Rights (TDRs):

        Projects within designated Receiving Areas utilizing TDRs for development shall conform to the following density requirements:
        1. Minimum – 6 RAC
        2. Maximum – 18 RAC
    4. Multiple Use (MU)
      1. Objective:
        To identify multiple-use areas that contain a wide range of uses, including residential, commercial and light industrial and provide standards for how these areas should develop or redevelop in the future.  Proposals for new non-residential uses must show how the uses will minimize negative impacts on existing residential uses.
      2. Residential Gross Density: Residential gross density, if applicable, shall conform to the following:
        1. Minimum – 6 RAC
        2. Maximum - As allowed by the requested conforming zoning district.
      3. Residential Gross Densities for Developments Using Transfer of Development Rights (TDRs): Projects within designated Receiving Areas utilizing TDRs for development shall conform to the following density requirements:
        1. Minimum – 6 RAC
        2. Maximum – 18 RAC
    5. Planned Development Community (PDC)
      1. Objective: To designate existing approved specific plans. Specific plans comprise a unique zoning regimen within a planned community. Specific plan documents include detailed information on the intent of the community as a whole, as well as the individual planning and zoning districts within the specific plan area.  Applications for amendments to individual specific plans shall be done in accordance with Section 18.90 (Specific Plans) of the Pima County Zoning Code.
      2. Exception: State Trust land in the proposed Sahuarita East Conceptual Plan is designated a PDC under Special Area Policy S-36 in Chapter 9.
    6. Higher Intensity Urban (HIU)
      1. Objective: To designate areas for a mix of medium to high density housing types, such as higher density single-family development, townhomes, condominiums and apartment complexes, as well as other compatible uses, such as offices, hotels, research and development, and other similar uses.  These areas have direct access to major transportation corridors and other arterials and are within walking or bicycling distance from major commercial services and employment centers. They generally do not abut land in low intensity urban categories.  Small-scale residential compatible retail services are allowed on the first floor of a multi-story building, provided that they are accessed from an arterial and are oriented away from lower density residential development.
      2. Residential Gross Density: Residential gross density shall conform to the following:
        1. Minimum – 8 RAC
        2. Maximum - As allowed by the requested conforming zoning district.
      3. Residential Gross Densities for Developments Using Transfer of Development Rights (TDRs):
        Projects within designated Receiving Areas utilizing TDRs for development shall conform to the following density requirements:
        1. Minimum – 8 RAC
        2. Maximum – 18 RAC
    7. Medium Intensity Urban (MIU)
      1. Objective: To designate areas for a mix of medium density housing types, such as attached dwellings, garden apartments, and single family, as well as non-residential uses such as offices, medical offices, and hotels. Special attention should be given in site design to assure that uses are compatible with adjacent lower density residential uses. Where possible, pedestrian and bicycle access shall be provided to commercial areas, schools, institutional uses, and other similar uses.
      2. Residential Gross Density:  Residential gross density shall conform to the following:
        1. Minimum – 5 RAC
        2. Maximum – 13 RAC
      3. Residential Gross Densities for Developments Using Transfer of Development Rights (TDRs).
        Projects within designated Receiving Areas utilizing TDRs for development shall conform to the following density requirements:
        1. Minimum – 5 RAC
        2. Maximum – 10 RAC
    8. Medium Low Intensity Urban (MLIU)
      1. Objective: To designate areas for a mix of medium density single-family and lower density attached dwelling units; to provide opportunities for a mix of housing types throughout the region.
      2. Residential Gross Density: Residential gross density shall conform to the following:
        1. Minimum – 2.5 RAC
        2. Maximum – 5 RAC
      3. Residential Gross Densities for Developments Using Transfer of Development Rights (TDRs).
        Projects within designated Receiving Areas utilizing TDRs for development shall conform to the following density requirements.
        1. Minimum – 2.5 RAC
        2. Maximum – 4 RAC
    9. Low Intensity Urban (LIU)
      Low Intensity Urban includes four land use categories designations ranging from a maximum of 3 RAC stepped down to 0.3 RAC. The Low Intensity Urban categories are LIU3.0, LIU1.2, LIU0.5, and LIU-0.3.
      1. Objective: To designate areas for low density residential and other compatible uses and to provide incentives for residential conservation subdivisions to provide more natural open space. Density bonuses are offered in exchange for the provision of natural and/or functional open space. Natural open space must be set aside, where applicable, to preserve land with the highest resource value and be contiguous with other dedicated natural open space and public preserves.
        1. Low Intensity Urban 3.0 (LIU-3.0)
          1. Residential Gross Density:
            1. Minimum – none
            2. Maximum - 3.0 RAC.
          2. Residential Gross Densities for Developments Using Transfer of Development Rights (TDRs). Projects within designated Receiving Areas utilizing TDRs for development shall conform to the following density requirements:
            1. Minimum density 1.5 RAC
            2. Maximum density 3.0 RAC.
        2. Low Intensity Urban 1.2 (LIU-1.2)
          1. Residential Gross Density:
            1. Minimum – none
            2. Maximum – 1.2 RAC. The maximum gross density may be increased in accordance with the following options:
              1. Gross density of 2.5 RAC with 45 percent open space; or
              2. Gross density of 4 RAC with 60 percent open space.
          2. Residential Gross Densities for Developments Using Transfer of Development Rights (TDRs). Projects within designated Receiving Areas utilizing TDRs for development shall conform to the following density requirements:
            1. Minimum density – none
            2. Maximum – 1.2 RAC. The maximum gross density may be increased in accordance with the following option:
              1. Gross density of 2 RAC with 50 percent open space.
        3. Low Intensity Urban 0.5 (LIU-0.5)
          1. Residential Gross Density:
            1. Minimum – none
            2. Maximum – 0.5 RAC. The maximum gross density may be increased in accordance with the following options:
              1. Gross density of 1.2 RAC with 50 percent open space; or
              2. Gross density of 2.5 RAC with 65 percent open space.
          2. Residential Gross Densities for Developments Using Transfer of Development Rights (TDRs). Projects within designated Receiving Areas utilizing TDRs for development shall conform to the following density requirements:
            1. Minimum density – none
            2. Maximum – 0.5 RAC. The maximum gross density may be increased in accordance with the following option:
              1. Gross density of 1 RAC with 50 percent open space.
        4. Low Intensity Urban 0.3 (LIU-0.3)
          1. Residential Gross Density:
            1. Minimum – none
            2. Maximum – 0.3 RAC. The maximum gross density may be increased in accordance with the following options:
              1. Gross density of 0.7 RAC with 50 percent open space; or
              2. Gross density of 1.2 RAC with 65 percent open space.
          2. Residential Gross Densities for Developments Using Transfer of Development Rights (TDRs). Projects within designated Receiving Areas utilizing TDRs for development shall conform to the following density requirements:
            1. Minimum density – none
            2. Maximum – 0.3 RAC.  The maximum gross density may be increased in accordance with the following option:
              1. Gross density of 0.7 RAC with 60 percent open space.

    B. Rural Intensity Categories

    The following land use categories shall be applied to designate rural development intensities on the land use plan.
    1. Rural Crossroads (RX)
      1. Objective: To designate mixed use areas where basic goods and services are provided to rural settlements and rural residents as conveniently as possible. Residential densities slightly higher than the surrounding rural neighborhoods are allowed to provide opportunities especially for certain housing types such as those serving the elderly, single, and low income residents. In more developed communities, a grocery may be the principal anchor tenant, along with other uses such as a drugstore, variety/hardware store, self-service laundry, bank, and other similar uses. Such areas will generally be less than twenty acres.  Smaller rural crossroads will generally be located at rural roadway intersections of collector or arterial roads for the provision of limited commercial services to rural residents and travelers.
      2. Residential Gross Density:  Residential gross density shall conform to the following:
        1. Minimum - 1.2 RAC
        2. Maximum – 10 RAC
      3. Residential Gross Densities for Developments Using Transfer of Development Rights (TDRs): Projects within designated Receiving Areas utilizing TDRs for development shall conform to the following density requirements:
        1. Minimum – 1.2 RAC
        2. Maximum – 5.0 RAC
    2. Rural Forest Village (RFV)
      1. Objective: To designate rural villages within confines of the Coronado National Forest.
      2. Residential Gross Density:  Residential gross density shall conform to the following:
        1. Minimum – none
        2. Maximum - 1.2 RAC
      3. Zoning Districts: Only the ML Mount Lemmon Zone shall be deemed in conformance with the land use plan.
    3. Medium Intensity Rural (MIR)
      1. Objective: To designate areas for residential uses at densities consistent with rural settlements in reasonable proximity to Rural Crossroads, arterials or suburban areas.
      2. Residential Gross Density: Residential gross density shall conform to the following:
        1. Minimum – none
        2. Maximum - 1.2 RAC
      3. Residential Gross Densities for Developments Using Transfer of Development Rights (TDRs): Projects within designated Receiving Areas utilizing TDRs for development shall conform to the following density requirements:
        1. Minimum – none
        2. Maximum – 1.2 RAC
    4. Low Intensity Rural (LIR)
      1. Objective: To designate areas for residential uses at densities consistent with rural and resource-based characteristics.
      2. Residential Gross Density: Residential gross density shall conform to the following:
        1. Minimum – none
        2. Maximum - 0.3 RAC
      3. Residential Gross Densities for Developments Using Transfer of Development Rights (TDRs): Projects within designated Receiving Areas utilizing TDRs for development shall conform to the following density requirements:
        1. Minimum – none
        2. Maximum – 0.3 RAC

    C. General Intensity Categories

    The following land use categories shall be applied to designate urban and rural development intensities on the Land Use Plan maps.
    1. Industrial (I)
      1. Objective: To designate adequate area for industrial uses that, if properly located and regulated, are compatible with certain types of commercial activities. Residential development is permitted within a proposed project provided that it meets the requirements of the Mixed Use Option under the CI-1 zoning district (Section 18.51.070 of the zoning code).
      2. Zoning Districts: Only the following zoning districts shall be deemed in conformance with the land use plan:

        1. CB-1 Local Business Zone
        2. CB-2 General Business Zone
        3. CPI Campus Park Industrial Zone
        4. CI-1 Light Industrial/Warehousing Zone
        5. CI-2 General Industrial Zone
        6. SP Specific Plans
    2. Heavy Industrial (HI)
      1. Objective: To designate adequate area for higher intensity industrial uses that is not compatible with non-industrial uses.
      2. Zoning Districts: Only the following zoning districts shall be deemed in conformance with the land use plan:
        1. 1. CI-1 Light Industrial Zone
        2. 2. CI-2 General Industrial Zone
        3. 3. CI-3 Heavy Industrial Zone
        4. 4. SP Specific Plans
    3. Resource Sensitive (RS)
      1. Objective: To designate key larger parcels and land holdings with environmentally sensitive characteristics in close proximity to public preserves or other environmentally sensitive areas.  Development of such land shall emphasize design that blends with the surrounding natural desert and provides connectivity to environmentally sensitive linkages in developing areas.
      2. Residential Gross Density:
        1. Minimum – none
        2. Maximum - 0.3 RAC
      3. Residential Gross Densities for Developments Using Transfer of Development Rights (TDRs): Projects within designated Receiving Areas utilizing TDRs for development shall conform to the following density requirements:
        1. Minimum – none
        2. Maximum – 0.3 RAC
    4. Resource Conservation (RC)
      1. Objective: To designate publically-owned lands that are public resource lands and preserves that protect sensitive and high-value biological, resource value cultural, recreational and other sensitive resources lands. These do not include private or state trust lands, whether or not they are leased by the County for open space purposes. If these lands become privately held during the lifespan of this plan, they will be treated as Resource Sensitive unless otherwise designated through a plan amendment process.
      2. Residential Gross Density: None, other than allowances for life estates, ranch caretakers and similar uses.
    5. Resource Extraction (RE)
      1. Objective: To designate mining lands and to protect these areas from encroachment by incompatible uses.
      2. Residential Gross Density: Residential gross density shall conform to the following:
        1. Minimum – none
        2. Maximum - 0.3 RAC
    6. Military Airport (MA)
      1. Objective: To recognize Davis-Monthan Air Force Base (DMAFB) as a unique and significant factor in shaping the history, character, and economy of Eastern Pima County; provide guidance for future compatible land uses to promote the health, safety and welfare of the community; and, to promote the long-term viability of the base and its missions.
      2. Residential Gross Density: New residential development is not a compatible use.
      3. Zoning Districts: Only the following zoning districts in compliance with the zoning code shall be deemed in conformance with the land use plan subject to compliance with the zoning code:
        1. CB-1 Local Business Zone
        2. CB-2 General Business Zone
        3. CPI Campus Park Industrial Zone
        4. CI-1 Light Industrial/Warehousing Zone
        5. CI-2 General Industrial Zone
        6. SP Specific Plan Zone

    8.2 Land Use and Regional Hydrology Maps

    The 13 Land Use maps which follow cover the unincorporated county except for the Tohono O’Odham Nation and the Pascua Yaqui Tribe.  They should be used as a resource along with the Regional Hydrology maps in Section 4.9 of this plan and the Maeveen Marie Behan Conservation Lands System map in Section 3.4 of this plan. The land use legend is described in Section 8.1 above. Application and interpretation of the maps is addressed in Chapter 10, Plan Administration.

    Another key map is the Focused Development Investment Area Map, found at this link.

    Click on map links in table below to open pdf. The large Land Use maps may take a few minutes to open.

    Land Use Maps (big) Hydrology  Maps
     Ajo-Why Ajo-Why
    Altar Valley Altar Valley
    Avra Valley Avra Valley
     Catalina Foothills Catalina Foothills
     Central Central
    Mountain View Mountain View
     Rincon Valley Rincon Valley
     San Pedro San Pedro 
     Southeast Southeast
    Southwest Southwest
    Tortolita Tortolita
     Tucson Mountains Tucson Mountains
    Upper Santa Cruz  Upper Santa Cruz

    Chapter 10 Comprehensive Plan Administration

    10.1 Introduction

    This chapter provides the necessary guidance to administer, amend and interpret the Plan. The attached chapter is an update.   The Comprehensive Plan is the product of an eighteen month planning process, including extensive community involvement, the engagement of all levels of government, the coordinated efforts of various County departments and the review and support of community leaders, residents, business owners and stakeholders, adjacent jurisdictions, regional and state agencies. This chapter ensures that future amendments of the Comprehensive Plan further the vision of Pima County as a healthy community as outlined in Chapter 1; and that the vision, goals, and policies are implemented in a fair and equitable manner.

    The development of the County Comprehensive Plan, Pima Prospers, is the product of countless hours of work by women and men from many Pima County agencies; citizens from across the County who provided critical input; our Guidance Team made up of senior management, Planning and Zoning Commission members and representatives of other jurisdictions; and our consultant team.

    Pima Prospers policies are not intended to be applied to land being developed which has already been through legislative review and approval in the County.

    10.2 Comprehensive Plan Authority and Interpretation

    The Comprehensive Plan is the primary overarching policy blueprint for the County. It has a major impact on the future of the County by setting forth guiding policies for governance in many areas of County responsibility and for future development and redevelopment notably when a land use is change is requested within the unincorporated county.  It provides the general direction of physical and human infrastructure for the county and for the long term economic development of the county. The major objectives of the comprehensive planning process are to preserve and enhance the quality of life in Pima County; support a healthy community where individuals can live, work, learn, and play; protect cultural and natural resources and promote economic development.


    All policies and implementation measures denoted in this Comprehensive Plan shall follow all relevant federal, state and Pima County laws and regulations, as may be amended.  Further, Pima County is committed to protecting private property rights.  Pima Prospers is an important tool in land use planning and a roadmap for future development, but must protect or grandfather these property rights fro existing entitlements.

    Pima County recognizes that continued lingering of an economic recession and the role of new planned development plays in shaping our community and economic future.  As such, Pima Prospers will balance the benefits of policies applicable to development and the cost of compliance.  This must be done to ensure we have sustainable growth, affordable housing, new retail and commercial centers and are attractive to companies seeking to invest in job creation in our region.

    Authority and direction to plan come from Arizona State Statutes, expressly the Growing Smarter and Growing Smarter Plus Acts, as amended as well as other directives embedded in Statute. Pima County Zoning Code Chapter 18.89 provides a more specific framework for the County’s Comprehensive Plan efforts. Citizen involvement is per the Public Participation Plan as called for in Statute and as adopted by the Board of Supervisors; it can be found in Appendix C of this Plan.

    General Implementation

    Once the Comprehensive Plan is adopted, overall day to day administration of the plan falls under the Planning Division of the Development Services Department.  An Interagency Monitoring Team, operating and formed under the auspices of the County Administrator will monitor and oversee progress on implementation of Pima Prospers as described in Section 10.8 below.  For infrastructure planning, one of the purposes of the Integrated Facilities Planning System, described further in Section 4.7 of the plan, will be to inform the work of the Interagency Monitoring Team.

    There are many policies and implementation actions in Pima Prospers, and they serve different purposes. Most of the policies and actions are direction to county officials and county staff, often working in multidisciplinary teams, with other jurisdictions, the non-profit sector and the private sector. Most of the direction, for example, in the Economic Development Chapter and Human Infrastructure Connectivity Chapter fits into that category.

    One of the tools used to implement the Comprehensive Plan is the rezoning and specific plan process in accordance to the land use maps in the plan. In furtherance of that, there are also policies and
    implementation actions that have applicability to proposed changes in land use (rezoning or specific plans, most particularly) on individual properties. These may be used in the form of rezoning conditions or included within the text of specific plans relative to a specific piece of property. Many of these types of policies appear in the Use of Land Chapter and the Physical Infrastructure Connectivity Chapter.

    There are also policies which serve both purposes. A policy may be primarily directed internally to the county, however may also be applied to a rezoning or specific plan change, depending on the size or location of the request. Comprehensive plan policies are not applied directly to subdivisions or development plans without having been addressed as a condition in a rezoning or specific plan approval. Exceptions are decisions made by the Design Review Committee or when the basis of a comprehensive plan policy has been codified into a county ordinance.

    Administration and implementation of the land use components of the plan fall primarily with the Planning Division of the Pima County Development Services Department in coordinated consultation with other county agencies.

    The words "guideline" or "guidelines" are assumed to mean "voluntary" , unless another explanation is provided in context of a specific use of the word.  The words "standard" or "standards: are assumed to mean a requirement, unless explanation is provided in context of a specific use of the word.


    Interpretation authority of the Land Use Map, Map Legend, Application of Plan Goals and Policies or any part or parts of this document lies with the Planning Director.  Where there may be an issue with a map interpretation involving a wash centerline, floodplain, or the Regional Hydrology Maps contained herein, the Planning Director shall consult with the Director of the Pima County Flood Control District.  Any decision as to the appropriateness of the specific circumstances of an application of a specific policy is made by the Planning Director in consultation with the director (s) of the department (s) most responsible for the implementation of the policy.  Appeal of a Comprehensive Plan interpretation of the Planning Director may be made to the Board of Supervisors.

    10.3 Rezoning Process and Comprehensive Plan Compliance

    The planned land use maps and focused area development maps in the Comprehensive Plan set the
    framework for how the unincorporated county is to grow over time, most notably over the next twenty
     years. A prime means of implementing the Comprehensive Plan and particularly the land use portion of the vision is through the rezoning process, ultimately a legislative action of the Board of Supervisors. Applicable policies are considered in this legislative process. All rezoning requests and specific plans must demonstrate conformance to the Comprehensive Plan land use maps by law. Approval of subdivision plats and development concept plans may be necessary to implement a rezoning and its conditions of approval. It is not the intent to mandate land use policies of this plan independently to subdivision plats and development concept plans.

    Site Analysis

    Petitioners for rezoning of any parcel greater than one acre in size to be developed at a residential density of four or more residences per acre; or greater than one acre in size to be developed for non-residential uses; or greater than five acres in size shall submit a Site Analysis prepared in accordance with Pima County Site Analysis Requirements, as referenced in Section 18.91.030F of the Pima County Zoning Code.

    10.4 Land Use Map and Legend Implementation and Interpretation

    The land use map and legend provided in Chapter 8 lay out a framework for growth and development in
    the unincorporated area of Pima County.

    The designation of land use intensity categories on the Plan’s Land Use Maps and its linkage to the Zoning
    Code (Chapter 18.89) provides a mechanism to assure that rezoning and specific plan approvals are
    consistent with the Plan. Rezoning applications (Section 18.91.040C) and specific plan applications
    (Section 18.90.030E) must comply with the Plan. In addition, staff reports for conditional use applications
    (Section 18.97) should include an analysis of the request in relation to the policies and land use
    designations of the Plan.

    Projects utilizing Transfer of Development Rights (TDR’s) shall conform to the requirements of Section
    18.92 of the Zoning Code as well as the density requirements of the individual plan category, except when
    part of a specific plan. However, the Board of Supervisors, on appeal at public hearing, may modify the
    required minimum density if environmental site constraints preclude the ability to achieve the minimum

    An applicant for rezoning may request any zoning district, except where noted, that conforms to the
    density requirements and the objectives of the particular land use category in which the property is
    located. Following review of the application, the Board of Supervisors, if it desires to approve the project,
    may approve it for any zoning district, subject to proper notice, that it feels best serves the need of the
    project and the community.

    An applicant for rezoning may seek reduction of the minimum density requirement from the Planning
    Director if the applicant believes that environmental site constraints preclude the ability to achieve the
    minimum density. The Planning Director’s decision may be appealed by the applicant to the Board of
    Supervisors at the public hearing for the rezoning request. A request for the Major Resort (MR) zone is
    permissible in any category except in the Industrial (I), Heavy Industrial (HI), Military Airport (MA),
    Resource Extraction (RE), and Rural Forest (RFV) land use categories.

    For purposes of clarity and readability only, many regulated watercourses and floodplains especially many
    with flows of less than 10,000 cfs (cubic feet per second) are not shown on the Land Use Maps. Refer to
    the Regional Hydrology maps in Chapter 4, Flood Control and Drainage Element. Where a regulated
    watercourse is a boundary between two different plan categories, the centerline of the watercourse shall
    serve as the boundary. Densities within a resource area may be transferred to other areas of the project
    area outside of the resource area provided all other requirements can be met; however, no dwelling units
    or other inhabitable or accessory structures may be built within the regulated watercourse. Refer to
    Section 4.9 Goal 1, Implementation Measure “a”, as well as the Floodplain Management Ordinance (Title
    16 of the Pima County Code).

    Rezoning applications required to provide open space may propose either natural or functional open
    space, except where natural open space is required. However, the Board of Supervisors may require that
    additional natural or functional open space over what was proposed be provided depending on the
    context of the proposed rezoning.

    Transfer of Densities and Uses

    In order to provide flexibility in design, for properties under one ownership and containing two or more
    land use designations other than PDC (Planned Development Community), the densities and non-
    residential acreages can be reconfigured in a single rezoning application provided that:

    A. The total number of dwelling units of the combined designations is not exceeded;
    B. The total acreage for non-residential uses of the combined designations is not exceeded.
    C. Areas with physical constraints, such as steep slopes or floodplains, shall not be counted in
    the acreage of the donor area; and
    D. Proposed developments must demonstrate that the project will not create any additional
    negative impacts on surrounding neighborhoods and properties over what would have
    occurred if the transfer did not occur.

    10.5 Map Interpretation

    Comprehensive Plan maps are created using Geographic Information Systems (GIS) digital information from a variety of sources. Based on best available data and practices, digital files and hard-copy maps may contain errors of accuracy, completeness, or timeliness. Precision may change over time as new technologies and sources of data are implemented. Maps are for general reference and are not intended for project level planning. Consult with staff to confirm Land Use Intensity categories and other considerations for specific areas. As annual amendments and other changes to Comprehensive Plan maps are approved, the electronic version of Comprehensive Plan map layers on the Pima County GIS data server will be updated. Archival electronic versions of these map layers will be created, at minimum once a year, at the end of each yearly amendment cycle

    Countywide Mapping Interpretation Procedures

    Countywide mapping interpretation procedures for land use category boundaries are based on hydrologic features. A consistent methodology for mapping floodplain limits boundaries in compliance with Federal Emergency Management Agency (FEMA) requirements is utilized. Interpretation and amendment of planned land use category boundaries which are based on hydrologic features must adhere to the following map interpretation procedures:

    1. The centerline of the watercourse, as it existed on the date a rezoning or similar action is approved by the Board, shall be the land use category boundary.
    2. Where a natural wash is shown as a polygon, precise location of its boundaries, as determined by detailed studies accepted by the County, shall be the land use category boundaries.
    3. Where a Resource Conservation or “Resource Transition” map boundary is based upon approved floodplain limits, amendment to such boundary which redefines the mapped floodplain may be requested in accordance to the following:
      1. A FEMA Letter of Map Revision (LOMAR) application;
      2. Other detailed hydrologic study accepted by the Pima County Flood Control District; and
      3. Map revisions shall be processed as a Minor Plan Amendment to the comprehensive plan with a public hearing.

    10.6 Plan Amendment Review Program

    An annual Plan Amendment Review Program is provided in Section 18.89.040 of the Pima County Zoning Code. The annual plan amendment program provides an opportunity to address oversights, inconsistencies or land use related inequities in the plan or to acknowledge significant changes in a particular area since the adoption of the plan or plan update.

    10.7 Comprehensive Plan Amendments

    Arizona Revised Statutes §11-804 and §11-805 provide the framework for the adoption of, and amendments to, the comprehensive plan. ARS §11-804 states, “The comprehensive plan shall be developed so as to conserve the natural resources of the county, to ensure efficient expenditure of public monies and to promote the health, safety, convenience and general welfare of the public.” Pursuant to Arizona Statutes, this section includes definitions and process for Major Amendments and pursuant to the Pima County Zoning Code, Minor and other amendments.

    Comprehensive Plan Policy Amendments

    Adding a new element or substantially changing one or more elements of the Comprehensive Plan prior to performing a full ten-year Comprehensive Plan Update shall be processed in accordance with the process for a Major Amendment described below. It must follow the adopted Public Participation Process (Appendix C), however, it may be initiated at any time of the year by the Board of Supervisors or the Planning and Zoning Commission.

    A change to one or more individual comprehensive plan goals or policies short of the substantial change described above does not constitute a major amendment of the plan.

    Comprehensive Plan Major Amendment

    Pursuant to ARS 11-805, a major amendment is defined as a “substantial alteration of the county's land use mixture or balance as established in the county's existing comprehensive plan land use element for that area of the county.” It is up to the county to develop the criteria that meets this definition.

    In Pima County a Major Amendment to the Comprehensive Plan may be initiated by the Board of Supervisors or requested by private entities and are considered once each year pursuant to State statutes.

    Major Amendment applications must be submitted within the same calendar year they are being considered at a single public hearing. A Major Amendment shall be approved by an affirmative vote of at least two-thirds of the members (4 of 5) of the Board of Supervisors and is subject to the public participation plan provided in the Public Involvement Procedures included in this Comprehensive Plan (Appendix C) and adopted by the Board of Supervisors.

    Major Plan Amendment Process and Criteria

    In Pima County a Major Amendment is any development proposal that meets the following criteria: A substantial change consisting of 640 acres or more in the overall development intent or land use mix of one or more designated planning areas within the County as determined by the Board of Supervisors.

    Major Plan Amendment Application and Approval Requirements

    1. All Major Amendment applications must be submitted within the same calendar year they are being considered at a single public hearing.
    2. Major Amendments shall be approved by an affirmative vote of at least two-thirds of the members of the Board of Supervisors and are subject to the public participation goals and policies provided in the Public Involvement Procedures included in this Comprehensive Plan and adopted by the Board of Supervisors.

    Comprehensive Plan Non-Major Amendment

    A non-major amendment does not meet the definition of a “major” nor do they qualify as “Board-Initiated Amendments for Immediate Review” or “Minor Revisions”. Non-major amendments currently share with major amendments the same annual schedule for submittal.

    Staff through this plan is recommending a second window of application be added for non-major amendments so that two series can be heard in one year, in the name of better customer service for all. This addition would require an amendment to Section 18.89 (Comprehensive Plan) of the County Zoning Code.

    Other Plan Amendment Types

    Per Chapter 18.89 of the County Zoning Code, several types of minor amendments are allowed.

    Board-Initiated Amendments for Immediate Review

    This type of amendment may be initiated at any time by the Board of Supervisors per Chapter 18.89 if the Board determines waiting for the standard amendment period(s) would deny any of the following:

    1. Substantial and significant benefits of new jobs;
    2. Expanded tax base;
    3. Enhanced opportunity for disadvantage populations;
    4. Significant promotion of affordable housing, mixed use planning, and compact development;
    5. There is evidence that waiting for the normal amendment period would place the community at greater health or safety risks in the form of inadequate waste treatment facilities, inadequate or unsafe transportation improvements, hazardous environmental conditions or insufficient community or governmental services or facilities.

    This process would also apply if a revised FEMA 100-year floodplain designation has been accepted by the Pima County Regional Flood Control District.

    Minor Revisions

    Type 1a: This type of amendment addresses annexation, ownership transfers of government land, or minor revisions to resource designations consistent with accurate FEMA 100-year floodplain information. There is no public hearing but there is “notice to the Planning and Zoning Commission”. The item is on the meeting agenda and there is a short staff report. The request may be submitted at any time.

    Type 1b: This is an administrative amendment subject to approval by the commission that a scrivener’s error occurred in mapping or in text that did not reflect the Board action on a property or policy. No public notice is required, a short staff report is provided, and the commission holds a vote on the amendment. The request may be submitted at any time.

    Type 2:  This amendment applies to properties of 10 acres or less to address a planning error, planning oversight, or an incorrect planned land use designation.  The amendment must demonstrate that it was done in error and not changed based on market or physical conditions of a property (see Section 18.89.040(B)(2)(a)).  Public notice for this amendment type is sent to surrounding property owners as defined in Section 18.89.041 for the Commission and Board hearings.  A short staff report is provided and the Commission and Board hold a vote.  The request may be submitted at any time.

    Concurrent Plan Amendment/Rezoning

    This amendment is for applicants to save time by overlapping the plan amendment and rezoning processes. To qualify, the request must comply with the specific criteria found in Section 18.89.041(C)(4), must have minimal impacts on surrounding properties, be consistent with regional policies, and the property must have no previous concurrent amendments. A staff report is provided and presented at both public hearings. The request may be submitted at any time.

    Non-substantial Modifications and Updates

    As this plan will likely be viewed mostly on-line, any updates to URL links, references to other reports or studies that may be amended, and similar edits may be made under authorization of the Planning Director to keep the plan a current as possible.

    10.8 Implementing and Monitoring the Comprehensive Plan

    Through its lifecycle, progress on implementation of Pima Prospers shall be monitored and overseen by an Interagency Monitoring Team (IMT) operating and formed under direction of the County Administrator. The IMT’s mission will be working to seek alignment between the Comprehensive Plan, Annual Budget of the County, the County’s Capital Improvement Program and Budget, and any potential bond program. The vision, goals and policies of the plan in seeking a healthy community should be reflected wherever possible, recognizing that performance of the day to day county functions transcend the comprehensive plan. The work of the team shall be separate from the annual plan amendment cycle covered in Chapter 18.89. The Planning Director will chair or co-chair the team at least for the first two years. It will meet at least quarterly to:
    1. Oversee the overall implementation program of the Comprehensive Plan, issuing a 3-5 year, annually updated work program for electronic publication based on input from participating departments.

    2. Establish reasonable benchmarks on which to base progress, achievement, and in part, the annual report.

    3. Receive timely updates from lead departments on the progress on identified implementation strategies, and any necessary deviations from the strategy.

    4. Produce an annual report for the Planning and Zoning Commission,  Board of Supervisors, County Administrator and electronic publication recognizing projects completed, projects in progress, and projects slated to begin in the new fiscal year. The work program in Appendix B will serve as the initial work program and model for annual updates.
    5. Working collaboratively with appropriate County leadership, develop mechanisms to ensure that the Comprehensive Plan is both a resource and reference in creation of the annual county budget, capital improvement program and bond programs, should they occur.
    6. Recommend, if necessary, text amendments to the Comprehensive Plan to the Planning and Zoning Commission and the Development Services Department as well as the primary implementing department if other than Development Services, based on the team’s experience.
    7. Seek input at least annually from private sector and other community stakeholders, including land use professionals, and how the Plan is affecting businesses, the community's economic growth and other concerns.
    8. Perform other duties as may be assigned  by the County Administrator or required to meet the mission of the team.
    Adjustments in process may be necessary over time to accomplish the mission efficiently and effectively, and be accountable to the Planning and Zoning Commission, Board of Supervisors, County Administrator and participating departments. The intent is to bring alignment, encourage innovation, and conserve resources, not to add to the processing bureaucracy.

    10.9 Community Plans

    More detailed plans that focus on a particular community or a discrete geographic area within Pima County, or that focus on specific policy element(s) or subject areas of county interest may be adopted. The process for developing a community plan may be initiated by area residents, the Development Services Department, the Planning and Zoning Commission, or by the Board of Supervisors. The initiation of the process to develop a community plan shall be determined by the Board of Supervisors. Community plans shall undergo public participation, public notice, staff review, and public hearing processes equivalent to the comprehensive plan update. A community plan would be considered part of the overall comprehensive plan and must be consistent with it. Community plans are intended to supplement, not supplant the Comprehensive Plan. A community plan process may consider land use changes, but any land use changes shall be presented separately as amendments to the Comprehensive Plan itself.

    10.10 Comprehensive Plan Update

    A Comprehensive Plan Update is initiated by the County Board of Supervisors and includes the adoption of a new comprehensive plan or the update or re-adoption of the existing comprehensive plan. According to state statute, the adoption of a new comprehensive plan or the update or re-adoption of the existing comprehensive plan shall be approved by an affirmative vote of at least two-thirds of the members of the Board of Supervisors. All Comprehensive plan updates are subject to the Public Involvement Procedures Program included in this Comprehensive Plan and adopted by the Board of Supervisors pursuant to State Statutes. A Comprehensive Plan Update shall be conducted at least once every ten years. However, changing conditions may warrant a Comprehensive Plan Update on a more frequent basis as determined by the Board of Supervisors.

    10.11 Existing Zoning Plans

    There are two zoning plans which remain in effect in Pima County, one known as the Catalina Foothills Area Plan and the other known as the Lago del Oro Zoning Plan. These are not part of the Comprehensive Plan but may be reviewed along with the Comprehensive Plan for conformance in a land use change. A property owner requesting the zone designated by the zoning plan may either submit an approved subdivision plat or seek a “Waiver of Platting Process”. The latter is essentially the rezoning process but the presentation  before the commission is not technically a public hearing (i.e. the public hearing was held back when the zoning plan was approved).

    10.12 Existing Approved Entitlements with Approved Zoning or Development Agreements

    There are numerous properties throughout Pima County which have received necessary planning and
    zoning approvals from Pima County and have made ongoing investments in those properties in
    anticipation of the recovery of the commercial and residential real estate markets. Their development
    plans and plats are required to comply with the zoning approval conditions of zoning, specific plan, any
    other applicable county ordinances and the terms of signed development agreements. The plats and
    plans are not required to conform to Comprehensive Plan policies unless they have been captured
    within a specific plan or conditions of a rezoning.

    10.13 Conservation Lands System Definitions

    Any proposed change in Appendix E to a definition related to any part of the Conservation Land System
    that would have the effect of changing a policy in Goal 1 of Section 3.4 of this plan (including Exhibits 3.4.1
    and 3.4.2) shall be considered a substantial change requiring public hearings by the Planning and Zoning
    Commission and the Board of Supervisors.


    A printer friendly version is available.

    E.1 Introduction

    Land use planning, like most fields, has its own language. The language of planning makes it easier for planners to present complex ideas and concepts in a concise manner. However, for readers unfamiliar with the language of planning, the terminology can be confusing. As an aid to readers, listed below are definitions of a number of the key terms used in this Comprehensive Plan Update, Pima Prospers. [Note: There are many different definitions used for some terms below throughout the world (e.g. sustainability) but for the purposes of this plan, the following definitions apply].

    E.2 Policy Terms and Definitions

    Acre: A measure of land containing 43,560 square feet.

    Active Design: An approach to the development of buildings, streets, and neighborhoods that uses architecture and urban planning to make daily physical activity and healthy foods more accessible and inviting.

    Activity Centers: A concentration of commercial and other land uses. Activity centers can vary greatly in size from the central districts of large cities to regional commercial areas to neighborhood shopping centers.

    Adaptive Reuse: Conversion of a building into a use other than that for which it was originally designed, such as changing a warehouse into an art gallery space or housing, or a single family residence into a small business. [This definition is more expansive than one currently found in the zoning code and is meant to depict a future set of circumstances. The one in the zoning code correctly defines how the term is presently used in the code]

    Adverse Impact: The lowering of a piezometric surface (the imaginary surface to which groundwater rises under hydrostatic pressure) in the area occupied by a groundwater-dependent ecosystem, or diversion of regional groundwater flows or sources of recharge away from a groundwater-dependent ecosystem.

    Affordable Housing: Dwelling units for sale or rent that are deemed affordable for lower Appendix E: Glossary Appendix E: Glossary or middle income households. It is also housing that does not create an economic burden for a household and allows residents to meet other basic needs on a sustainable basis.

    Age-limited: Housing options that are restricted to a population of a certain age group, for example 55+.

    Aggregate: Sand, gravel, crushed stone and quarried rock used for construction purposes.

    Aging in Place: The ability to live in one's own home and community safely, independently, and comfortably, regardless of age, income, or ability level.

    Ambient (outdoor) Air Pollutants: The Clean Air Act requires EPA to set National Ambient Air Quality Standards for six common air pollutants. They are particle pollution (often referred to as particulate matter), ground- level ozone, carbon monoxide, sulfur oxides, nitrogen oxides, and lead.

    Approach/Departure Corridors:
    • Approach Departure Corridor One (ADC- 1). A specifically designated area 12,000 feet from the northwest end of the runways at Davis Monthan Air Force Base where land use is susceptible to a degree of risk of aircraft accident potential.
    • Approach Departure Corridor Two (ADC- 2). A specifically designated area 30,000 feet from the southeastern end of runways at Davis-Monthan Air Force Base where land use is susceptible to a degree of risk of aircraft accident potential.
    • Approach Departure Corridor Three (ADC-3). A specifically designated area located 30,000 to 50,200 feet at the southeastern end of runways at Davis- Monthan Air Force Base where land use is susceptible to a degree of risk of aircraft accident potential, less than in the ADC-1or ADC-2 zones.
    Arizona Revised Statutes (A.R.S.): The statutory laws of the State of Arizona, as amended. Title 11 of the Statutes directs counties to prepare a comprehensive plan and provides mandates and guidance for that preparation.

    Arts District: A demarcated area, intended to create a 'critical mass' of places of cultural consumption - such as art galleries, dance clubs, theatres, art cinemas, music venues, and public squares for performances.

    Bike Routes: Routes designated for bicycle travel that may include shared streets, bike lanes, or multiuse paths, in any combination.

    Biogas: A mixture of methane and carbon dioxide produced by the bacterial decomposition of organic wastes and used as a fuel.

    Biological Core Management Areas: Those areas that have high biological value. They support large populations of vulnerable species, connect large blocks of contiguous habitat and biological reserves, and support high value potential habitat for five or more priority vulnerable wildlife species.

    Blight: The process whereby a previously functioning city, or part of a city, falls into disrepair and decrepitude.

    Board of Supervisors: The Pima County Board of Supervisors is the elected policy- setting body for Pima County. The Comprehensive Plan is ultimately approved by the Board on consideration of input from the residents, Planning and Zoning Commission, and staff.

    Brownfields: Land previously used for industrial purposes or some commercial uses. The land may be contaminated by low concentrations of hazardous waste or pollution, and has the potential to be reused once it is cleaned up.

    Buffelgrass: Buffelgrass, an invasive plant species introduced for cattle forage that grows rapidly and poses a serious fire risk to the Sonoran Desert, an ecosystem that is not fire adapted.

    Built Environment: The human-made surroundings that provide the setting for human activity, ranging in scale from personal shelter to neighborhoods to large- scale urban surroundings.

    CANAMEX Corridor: The CANAMEX corridor is a corridor linking Canada to Mexico through the United States. The corridor was established under the North American Free Trade Agreement. Currently the corridor is defined by a series of highways.

    Carbon Dioxide (CO2) Sequestration: Capture and secure storage of carbon that would otherwise be emitted to or remain in the atmosphere. It is a way to show accumulation of greenhouse gases.

    Carbon Footprint: Carbon footprint is a measure of the impact our activities have on the environment and particularly on climate change. Carbon footprint is measured by the total amount of greenhouse gases produced to directly and indirectly support human activities. It is usually expressed in equivalent tons or pounds of carbon dioxide.

    Central Arizona Project (CAP): Central Arizona Project is designed to bring about 1.5 million acre-feet of Colorado River water per year to Pima, Pinal and Maricopa counties. CAP carries water from Lake Havasu near Parker to the southern boundary of the San Xavier Indian Reservation southwest of Tucson. It is a 336- mile long system of aqueducts, tunnels, pumping plants and pipelines and is the largest single resource of renewable water supplies in the state of Arizona.

    Character: The image and perception of a community as defined by its built environment, landscaping, natural features and open space, types and style of housing, and contribute to its individuality.

    Character Areas: Character areas cover geographical areas of different size and each has a common setting, land use pattern, density and intensity, or unique type or scale of development. "Character" can generally be thought of as the look or feel of a place-- that which sets it apart from other areas. Based on this definition, three major

    character areas have been identified in Pima County:
    • Urban – Located in close proximity to incorporated jurisdictions, major transportation corridors and areas where infrastructure is in place or planned, urban uses contain a mix of housing, commercial, employment, and activity centers in a moderate to higher density setting. Urban communities offer a variety of housing types, including low and mid-rise apartments and condos, duplexes, townhomes, small-lot single-family homes, and some single-family homes on slightly larger lots
    • Suburban – These are neighborhoods in relatively close proximity or adjacent to neighborhood centers and retail in a low to moderate density setting. Suburban communities offer residents larger lots in a lower density setting.
    • Rural – Development is characterized by low to very low density single-family residential homes on large lots, ranches, small scale commercial, agriculture, livestock, farms, food production, and distribution uses with limited and greater distance to services.
    Commercial Façade Program: Program activities are designed to bring commercial structures up to code or improve their facades. If the commercial structure is owned by a private, for profit entity the rehabilitation activity is limited to the exterior of the building and the correction of code violations. Any other improvements will be carried out under the special economic development category.

    Community Development Target Areas: Locales where the majority of the population is low income therefore automatically qualifying the area for Community Development, Block Grant (CDBG) funds.

    Community Node and Gateways: A concentration of uses that provide vibrancy, convenience, and variety to a community. Gateways may also define the entrance to a specific area within a community.

    Compact Development: Refers to the act of constructing buildings vertically or horizontally, often in a mixed-use area, and configuring them on a block or neighborhood scale that makes efficient use of land and resources, and is consistent with neighborhood character and scale. Compact building design reduces the footprint of new construction, thus preserving greenspace to absorb and filter rain water, reduce flooding and stormwater drainage needs, and lower the amount of pollution washing into our streams, rivers and lakes. Compact building design is necessary to sustain transit ridership at levels necessary to make public transit a viable transportation option.

    Compatibility: The design, arrangement, and location of buildings and structures or other created or natural elements of the urban environment which are sufficiently consistent in scale, character, siting, coloring, or materials with other buildings or elements in the area so as to avoid abrupt or severe differences.

    Complete Streets: As defined by the National Complete Streets Coalition, Complete Streets are designed and operated to enable safe access for all users, including pedestrians, bicyclists, motorists and transit riders of all ages and abilities. Complete Streets make it easy to cross the street, walk to shops, and bicycle to work. They allow buses to run on time and make it safe for people to walk to and from transit stations. In a desert environment, shade plays an important role in encouraging walkability.

    Comprehensive Plan: The road map of the county including the vision, goals, policies, and implementation strategies that guide decisions regarding the growth and redevelopment of the county. It is a comprehensive, coordinated set of intents and directions for the county including, but not limited to, land use, transportation, economic development, environment, water resources, infrastructure, public facilities and services, parks, recreation, trails, conservation, food production, health services and the physical environment.

    Concurrency: A governmental policy requiring the availability of public services (water, sewer, roads, schools, etc.) prior to or about the same time a new development comes on line.

    Connectivity: Refers to the directness of links and the density of connections in a transport network. As connectivity increases, travel distances decrease and route options increase, allowing more direct travel between destinations, creating a more accessible and resilient transportation system.

    Conservation: The controlled use and systematic protection of a resource including, but not limited to, environmental or cultural resources, with the purpose of keeping such resources from harm.

    Conservation Lands System: The Conservation Lands System (CLS) is the ultimate expression of those lands where conservation is fundamental and necessary to achieve the Plan’s biological goals, while delineating areas suitable for development. The CLS was renamed the Maeveen Marie Behan Conservation Lands System in November 2009 in memory of Dr. Behan’s work on the Sonoran Desert Conservation Plan (SDCP) and the development of the CLS.

    Corridors: Linear connections between neighborhoods created by road, rail, rivers and washes, and greenway connections.

    Creative Economy: At the heart of the creative economy are the cultural and creative industries that lie at the crossroads of arts, culture, business and technology.

    Critical Landscape Connections: Six broadly- defined areas where biological connectivity is significantly compromised, but where opportunity to preserve or otherwise improve the movement of wildlife between major conservation areas and/or mountain ranges still persists.

    Cultural Resources: Physical evidence or place of past human activity: site, object, landscape, structure; or a site, structure, landscape, object or natural feature of significance to a group of people traditionally associated with it.

    Dark Sky/Skies: Preservation of the natural light/dark cycle through minimizing light pollution. Reducing unneeded light is essential to maintaining the viability of the numerous major astronomical assets in the region covered by the Plan and comes with proven economic, ecological and human health benefits.

    Davis-Monthan AFB Environs Zone: a boundary Davis-Monthan Air Force Base within which only compatible land uses are allowed. Within the Zone, acoustical treatment of buildings is required to reduce exposure to high levels of airport noise.

    Density: Density is used to describe the number of dwelling units per acre in residential districts.

    Designated Area Agency on Aging: An agency designated by the State Unit on Aging in a designated area to develop and administer a plan for a comprehensive and coordinated system of aging services.

    Development: The physical extension and/or construction of the built environment. Development-related activities include: subdivision of land; construction or alteration of structures, roads, utilities, and other facilities; grading; and clearing of natural vegetative cover (with the exception of agricultural activities); as well as, the creation of parks and recreation facilities.

    Development Target Areas: Target Areas (neighborhoods) are specific areas in Pima County that have been identified for community development assistance based on household income. To be eligible, the target area must have more than 51 percent of the households below 80 percent of the median income as determined by the Department of Housing and Urban Development.

    Distressed Area: A generic term referring to site specific blighted properties. There may be distressed areas within Community Development Target Areas (CDTA).

    Drought: A sustained, natural reduction in precipitation that results in negative impacts to the environment and human activities. Short-term drought is measured by the departure of precipitation from average conditions on a time-scale from one to several months. Long-term drought is measured when sustained precipitation deficits -over time periods of one to several years- affect surface and subsurface water supplies.

    Dwelling Unit: A building or portion of a building designed or used by a family or group of people for residential purposes as a single housekeeping unit, but not including convalescent homes, hospices, assisted living facilities, hospitals, hotels, motels, and other group living arrangements or accommodations for the transient public.

    Easement: The right to use property owned by another for specific purposes or to gain access to another property. Common examples of easements include the right of a property owner who has no street front to use a particular segment of a neighbor's land to gain access to the road, as well as the right to run a sewer line across a strip of an owner's land, which is frequently called a right of way.

    Economic Development: A set of policies that create and guide actions and strategies that promote the standard of living and economic health of the area such as workforce training, critical infrastructure, regional competitiveness, environmental sustainability, social inclusion, health, safety, literacy, and other initiatives.

    Economic Development Corridor: Developed to stimulate and support reinvestment along major transportation corridors such as the proposed Sonoran Corridor linking I-19 to I-10 and others. These corridors are often the primary resource for transportation, shopping, commercial services and public services. In the economic development context, these corridors include major routes that connect a variety of industries, including aerospace and defense.

    Ecosystem: An ecosystem includes all of the living things in a given area, interacting with each other, and also with their non-living environments.

    Effluent: Treated municipal wastewater. Similarly, reclaimed water is former wastewater (sewage) that is treated to remove solids and impurities, and used in sustainable landscaping irrigation, to recharge groundwater aquifers, to meet commercial and industrial water needs, and for drinking.

    El Corazon: The Heart of Tres Ríos del Norte at the Confluence of the Santa Cruz, Rillito and Cañada del Oro Rivers. This County project includes ecosystem restoration along both banks of the Santa Cruz River, flood control protection for the surrounding community, and additional regional recreation elements.

    Equity Building: Increasing the net value of an asset such as the portion of a home’s value or mortgage that has been paid off. As a mortgage loan is paid off, equity is gained.

    Elements: A component of the Comprehensive Plan dealing with specific topics that are either required (e.g. water) or optional (e.g. health and economic development) as defined in the A.R.S. Title 11, Chapter 6, Article 1, including, economic development, open space and land use, etc.

    Employment Centers or Districts: Primarily single use areas like shopping or campuses where development patterns were created specifically for that use such as educational districts like the University of Arizona or medical districts based around hospitals like Northwest Hospital or Tucson Medical Center.

    Energy Efficient Mortgage Program: Energy Efficient Mortgage program (EEM) is a Federal Housing Administration (FHA) program that helps homebuyers or homeowners save money on utility bills by enabling them to finance the cost of adding energy efficiency features to new or existing housing as part of their FHA insured home purchase or refinancing mortgage.

    Exurbs: The region that lies beyond a city and its suburbs.

    Fair Housing Act: A law enacted as part of civil rights legislation that prohibits discrimination of home sales, rentals and financing based on race, color, national origin, religion, sex, familial status or those with disabilities.

    Final Integrated Water Management Plan: A plan detailing proposed water resources, reuse, replenishment, conservation and use of renewable water supplies for the tentative plat or development plan stage of a proposed project.

    Focused Development Investment Area: State statutes require planning for growth areas, specifically identifying those areas that are particularly suitable for multi-modal transportation and infrastructure expansion and improvements designed to support a concentration of a variety of uses, such as residential, office, commercial, tourism and industrial uses. In unincorporated Pima County, Focused Development Investment Areas fulfill these functions.

    Fossil Fuels: Fuels formed by natural processes such as anaerobic decomposition of buried dead organisms. The age of the organisms and their resulting fossil fuels is typically millions of years, and sometimes exceeds 650 million years. The fossil fuels, which contain high percentages of carbon, include coal, petroleum, and natural gas.

    Fugitive Dust: Particles lifted into the air caused by man-made and natural activities such as the movement of soil, vehicles, equipment, blasting, and wind.

    Gigawatts: Unit of electric power equal to one billion (10^9) watts, one thousand megawatts, or 1.34 million horsepower enough to supply a medium size city.

    Goals: The ultimate purpose of an effort stated in a way that is general in nature and immeasurable. Goals are not quantifiable, time-dependent, or suggestive of specific actions for achievement. There is at least one general plan goal per element, with more than one goal per element where appropriate or necessary. Goals often refer to one or more aspects of the vision and incorporate specific values.

    Gray Water: The relatively clean waste water from baths, sinks, washing machines, and other kitchen appliances.

    Green Building: The practice of creating structures and using processes that are environmentally responsible and resource- efficient throughout a building's life-cycle from siting to design, construction, operation, maintenance, renovation and deconstruction.

    Greenhouse Gases: Any of various gaseous compounds (such as carbon dioxide) that absorb infrared radiation, trap heat in the atmosphere, and contribute to the greenhouse effect.

    Green Improvements (Housing): Green home improvements offer a variety of benefits to homeowners and the environment, including installation of solar panels, low water features, water harvesting, as well as energy efficient appliances and construction. The federal government has initiated a variety of tax incentives and grants for green home improvements, as have state organizations and local energy companies.

    Green Infrastructure: Practices that use or mimic natural systems and processes to promote infiltration, evapotranspiration, and harvesting of stormwater for retention and use in the landscape, generally by using vegetation and soil to manage stormwater where it falls.

    Green Purchasing: Refers to the procurement of products and services that have a reduced effect on human health and the environment when compared with competing products or services that serve the same purpose.

    Green Streets: An integrated system of stormwater management within a street’s right-of-way that reduces the amount of water that is piped directly to streams and rivers. Green streets make the best use of the street tree canopy for stormwater interception (water harvesting) as well as temperature mitigation (shade) and air quality improvement.

    Greenways: A corridor of undeveloped land preserved for recreational use or environmental protection.

    Greyfields: Older, economically obsolete development. The term is commonly applied to malls that are past their prime and are experiencing declining levels of occupancy.

    Groundwater: All water below the surface of the land. It is water found in the pore spaces of bedrock or soil, and it reaches the land surface through springs or it can be pumped using wells.

    Groundwater-Dependent Ecosystems: Shallow ground-water areas, springs and intermittent and perennial streams that are not effluent-dominated, as mapped by Pima County.

    Groundwater recharge: A hydrologic process where water moves downward from surface water to groundwater. Recharge occurs both naturally (through the water cycle) and anthropologically (i.e., “artificial groundwater recharge”), where rainwater and or reclaimed water is routed to the subsurface.

    Growing Smarter Act: 1998 Arizona state legislation that affected how cities and counties conduct and administer long-range planning activities. This legislation required four new plan elements and expanded other elements; required additional public notification and involvement; and required that Comprehensive and General Plans be readopted every 10 years. The Growing Smarter Act was amended by the Growing Smarter Plus Act.

    Growing Smarter Plus Act: 2000 Arizona state legislation that revised some of the considerations of the 1998 Growing smarter act. The Growing Smarter Plus Act required an additional element, and redefined major amendments to the Comprehensive Plan. The Growing Smarter Plus Act has been amended several times including adding Energy as an element.

    Habitat Protection Priority Areas: Those areas referenced and mapped as part of the 2004 open space bond program.

    Health Impact Assessment (HIA): HIA is a process that helps evaluate the potential health effects of a plan, project or policy before it is built or implemented. An HIA can provide recommendations to increase positive health outcomes and minimize adverse health outcomes.

    Health Literacy: The ability to obtain, read, understand and use healthcare information to make appropriate health decisions and follow instructions for treatment.

    Healthy Community: For the purposes of the Comprehensive Plan, a healthy community is a condition of living that enables the present generation to enjoy social well-being, a vibrant economy, and a healthy environment, without compromising the ability of future generations to enjoy the same.

    Healthy Homes: [Note: Definition to be added] Healthy Housing Standards: The Healthy Housing Standard is a living tool for property owners, elected officials, code agency staff, and all who are concerned about housing as a platform for health. Individually and together, the Standard constitutes minimum performance standards for a safe and healthy home. It provides health-based measures to fill gaps where no property maintenance policy exists and also serves as a complement to the International Property Maintenance Code and other housing policies already in use by local and state governments and federal agencies.

    High Noise or Accident Potential Zones: High noise or accident potential zones means any property located in the following zones: Luke air force base in Maricopa County, Davis-Monthan air force base in Pima County, Yuma marine corps air station and Laguna army airfield in Yuma County and Libby army airfield in Cochise County, or ancillary military facilities.

    Housing Tenure: Refers to the arrangements under which the household occupies all or part of a housing unit. Types of tenure includes ownership by a member of the household and rental of all or part of the housing unit by a member of the household, etc.

    Human Infrastructure: Human Infrastructure relates to the efficient provision of existing and future services needed to support current and forecasted populations. These include: . health services; . public safety and emergency services; . parks and recreation; . workforce training/education; . library services; and . animal care.

    Each of the services listed above play a significant part in how our county functions, they implement the overall vision and they each connect our people with each other on multiple levels.

    Human Scale: The quality of the physical environment which reflects a sympathetic proportional relationship to human dimensions and which contributes to the citizen’s perception and comprehension of the size, scale, height, bulk and/or massing of buildings or other features of the built environment.

    Identity: Qualities that make a community distinctive, unique, interesting or attractive.

    Implementation Strategies: Located in a companion document, implementation strategies ensure that the Plan is used, and that the policies in the Plan are implemented by specific tasks. The implementation strategy lists all of the tasks, lead responsible entities, schedule for completion, and potential funding mechanisms.

    Important Riparian Areas: Critical elements of the Sonoran Desert where biological diversity is at its highest. These areas are valued for their higher water availability, vegetation density, and biological productivity. They are also the backbone in preserving landscape connectivity.

    Inclusive Home Design Ordinance: This standard provides technical criteria for making sites, facilities, buildings, and elements accessible.

    Indirect Potable Resources: A water recycling application where municipal wastewater is highly treated and discharged directly into groundwater or surface water sources with the intent of augmenting drinking water supplies Infill: Development of vacant land (often individual lots or left-over properties) within areas that are already largely developed.

    Infill Incentive District: Used to promote high quality new development, redevelopment and infill development within the district through the use of flexible development standards.

    Infrastructure: Public services and facilities, such as sewage-disposal systems, water supply systems, other utility systems, flood control improvements, and roads.

    In-lieu Fee: An in-lieu fee is an option where developers may pay a fee instead of fulfilling a specific requirement (for example the developer may choose to pay an in-lieu fee to a third party to provide parks instead of building a project-specific park on site).

    Intergenerational Housing: a housing concept that enables a family of multiple generations to live together on one property. There are many arrangements for such housing, but one example takes the form of a single-family home that includes additional dwelling units that are used for cohabitation between parents, children, and other relatives, such as grandparents. Other arrangements may include multiple manufactured homes on one lot, a two or three story duplex or triplex, each floor being a family residence, a family living over a garage, etc.

    Impervious Surface: Any surface through which rainfall cannot pass or be effectively absorbed such as roads, buildings, paved parking lots, sidewalks etc.

    Intensity: Used to describe size, bulk, use, and scale of development in nonresidential districts.

    Intermountain West Corridor (I-11): Through the recent transportation authorization bill, (MAP-21) Congress recognized the importance of the portion of the Corridor between Phoenix and Las Vegas and designated it as future I-11, intended to be a new high-capacity, multimodal transportation facility connecting the two cities. Extended, it has the potential to become a major multimodal north-south transcontinental Corridor through the Intermountain West, connecting cities, trade hubs, ports, intersecting highways, and railroads.

    Isolated Basins: Hydrologic basins in Pima County except the Tucson and Avra basins.

    Land Use: The occupation or utilization of land area for any human activity, infrastructure, conservation of the natural environment and economic development as specifically defined in the Comprehensive Plan.

    Land Use Map: A map that graphically depicts existing or future land uses and densities. It visually defines land use compatibility and spatial relationships, establishes the physical form of the community, and identifies urban design opportunities. A land use map serves as a guide in preparation of zoning ordinances, zoning district maps, rezonings, comprehensive plan amendment requests, CIP planning, bond decisions, and indirectly variances and CUP’s.

    Level of Service (LOS): A measure of congestion and performance, typically on an A through F scale; a very congested freeway, for example, would have a “low” level of service (such as LOS F); LOS can also be applied to transit, bicycle and pedestrian travel modes.

    Livability: The sum of the factors that add up to a community's quality of life—including the built and natural environments, economic prosperity, social stability and equity, educational opportunity, and cultural, entertainment and recreation possibilities.

    Live-work: A mixed-use unit consisting of a commercial and residential function. The commercial function may be anywhere in the unit. It is intended to be occupied by a business operator who lives in the same structure that contains the commercial activity or industry.

    The Loop: A system of shared use paths connecting the Rillito, Santa Cruz and Pantano River parks with the Julian Wash and Harrison Road Greenways. The loop will extend through Marana, Oro Valley, Tucson and South Tucson. Pima County residents and visitors on foot, bikes, skates, and horses can enjoy the more than 100 miles of shared- use paths that have already been completed.

    Low Impact Development (LID): A land development or re-development approach that preserves or restores on-site natural systems and hydrologic functions, and reduces impervious or disturbed areas to manage stormwater as close to its source as possible.

    Mass: The combination of the three dimensions of length, height, and depth which give a building its overall shape; a building is often composed of many masses, hence the term massing, which is often used to describe the form or shape of structures.

    Mitigate: To lessen the impact of, alleviate, or avoid to the extent reasonably feasible.

    Mix of Uses: An area with a combination of compatible land uses.

    Mixed Use Development: Development that includes a mixture of complementary land uses; sometimes referred to as live/work/play areas. A common mix of land uses that may include housing, retail, office, commercial services, civic uses, recreation or open space.

    Horizontal Mixed Use: Combines single- use buildings on distinct parcels with a range of other land uses within one block.

    Vertical Mixed Use: Combines different uses in the same building. Lower floors could have more public uses with more private uses on the upper floors. For example, the ground floor could have retail, second floor may have professional offices, and the top floors may have some form of residential use.

    Multi-family: A structure that contains three or more dwelling units that share common walls or floor/ceilings with one or more units. The land underneath the structure is not divided into separate zoning lots. Multi- dwellings include structures commonly called garden apartments and condominiums.

    Multi-modal: The combination of several travel modes within a single corridor or facility; also refers to the ability to choose among several travel modes.

    Multiple Use Management Areas: Those areas where biological values are significant, but do not attain the level associated with Biological Core Management Areas. They support populations of vulnerable species, connect large blocks of contiguous habitat and biological reserves, and support high value potential habitat for three or more priority vulnerable species.

    Neighborhood: The smallest subarea in planning, defined as a residential area whose residents have public facilities and social institutions in common, and generally within walking distance of their homes.

    Neighborhood Capacity: The combined influence of a community’s commitment, resources, and skills that can be deployed to build on community strenFgths and address community problems.

    Net Metering: The practice that allow consumers to produce renewable energy and sell the excess power back to the grid and to the utilities, thereby rolling back meters and their electric bills.

    Net Zero Energy Buildings: At the heart of the Zero Energy Building concept is the idea that buildings can meet all their energy requirements from low-cost, locally available, nonpolluting, renewable sources. At the strictest level, a Zero Energy Building generates enough renewable energy on site to equal or exceed its annual energy use.

    Non-attainment (air pollution): Used as an air quality standard, a “non-attainment” air pollution classification means that air quality in a particular region does not meet (or “attain”) a federal air quality standard.

    Non-potable: Water that is not of drinking water quality, but which may still be used for many other purposes depending on its quality.

    Open Space: An area of land not developed for use as residential, commercial, industrial, office, or institutional.
    • Functional Open Space - A designed open space element of the development that has a functionally described and planned use as an amenity for the direct benefit of the residents of a development, with not more than three percent of man-made impervious surface within such designated areas.
    • Natural Open Space (undisturbed open space) - Any area of land, essentially unimproved and not occupied by structures or man-made impervious surfaces, except pedestrian and non- motorized access trails, that is set aside, dedicated or reserved in perpetuity for public or private enjoyment as a preservation of conservation area.
    PAG: Pima Associations of Governments. Pima Association of Governments is a nonprofit metropolitan planning organization with Transportation Planning, Sustainable Environment Planning and Technical Services divisions. These divisions coordinate efforts with all the local jurisdictions in Pima County, and with the Pascua Yaqui Tribe and Tohono O’odham Nation. PAG's nine-member Regional Council has representatives from the local, state and tribal governments.

    Parks: The National Recreation and Parks Association developed a park classification system that establishes of a hierarchy of parks. Such hierarchy includes: Regional Parks – Regional parks supplement community and neighborhood parks, serving broader based recreation needs in addition to those addressed in smaller parks. The increased size permits larger development of both active and passive facilities, providing a wide range of recreational pursuits. Regional parks may include sizeable areas of undeveloped land with natural vegetation. Regional parks can also incorporate linear parks, such as The Loop, and provide connectivity to the regional trail system.
    • Community - Community parks are typically larger in scale than neighborhood parks and serve several neighborhoods with both active and passive recreational facilities. A community park may include a community center. Group activities are well integrated and may include highly used recreational facilities such as programmed athletic sports fields, swimming pools and recreation centers. Community parks may also contain large passive open space areas or preserve unique landscapes. This type of park, due to their location on major thoroughfares, provides a visual break in the built environment.
    • Neighborhood - A neighborhood park is the basic unit of the park system and serves as the recreational focus of an individual neighborhood. Playgrounds, trails and usable open spaces are generally given the highest priority. A neighborhood park may include a neighborhood center. This type of park includes features for sitting, picnicking and relaxing.
    • Pocket - A pocket park is the smallest park in the park classification system and is considered as an alternative when providing a typical neighborhood park is impractical. Pocket parks provide open space and meet the recreational needs of neighborhoods. Pocket parks are residential in scale and character and provide a quiet setting for park use. They includes passive uses such as picnic and sitting areas, shade. In more urban areas, pocket parks may take the form of courtyards, plazas, promenades, and ramadas in mixed-used development.
    • Linear - Linear parks offer scenic beauty and allow safe, uninterrupted pedestrian, bicycle and/or equestrian movement along natural or built corridors. They are generally located along washes, creeks, streams or in association with major thoroughfares or boulevards. An example of a linear park is The Loop.
    Pedestrian Oriented: an environment designed to make movement by pedestrians fast, attractive and comfortable for various ages and abilities; considerations include separation of pedestrian and auto circulation, street furniture, clear directional and informational signage, safety, visibility, shade, lighting, surface materials, trees, sidewalk width, intersection treatment, curb cuts, ramps and landscaping.

    Pervious Surface: A surface which allows water to filter into the ground, which enables natural groundwater to recharge, helps with filtration of pollutants, and reduces erosion and flooding. The use of pervious asphalt and concrete for parking lots, roads and sidewalks is an important part of stormwater management that conserves precious natural resources.

    Planned Development Communities: An area of land with a minimum size, as specified by district regulation, to be planned and developed using a common master zoning plan, and containing one or more uses and common areas.

    Planning Area: Thirteen distinct areas within Pima County that will be addressed by the Comprehensive Plan, including: Ajo/Why, Altar Valley Avra Valley, Catalina Foothills, Central, Mountain View, Rincon Valley, San Pedro, Southeast, Southwest, Tortolita, Tucson Mountains, and Upper Santa Cruz. The planning areas are based on watersheds and natural hard boundaries such as I-10, for example.

    Planning and Zoning Commission: The Planning and Zoning Commission is made up of 10 volunteer members, two members are appointed by the supervisor for each of the districts. The Planning and Zoning Commission hears and makes recommendations on land use decisions such as rezoning cases, amendments to the zoning code, amendments to the comprehensive plan, as well as the comprehensive plan update process.

    Policies: A course or principle of action defined to support a given goal.

    Potable water: Drinking water or potable water is water safe enough to be consumed by humans or used with low risk of immediate or long term harm.

    Preliminary Integrated Water Management Plan (PIWMP): A plan identifying all sources and uses of water intended for, and water demand projections based upon, a proposed rezoning.

    Primary Care Areas (PCAs): Primary Care Areas describe areas in Arizona where the local residences primarily obtain their health care.

    Primary Property Taxes: The County currently assesses a primary property tax to provide funding for the judicial system, Sheriff, healthcare, general services, and community development.

    Public/Private Partnership: Achieving a goal or providing a service by merging public and private resources in the form of, for example, financial assistance, expertise, collaborative planning, and public relations support.

    Recharge: Water that infiltrates into the ground, usually from above, that replenishes groundwater reserves, provides soil moisture, and affords evapotranspiration.

    Rainwater Harvesting: A technique used for collecting, storing, and using rainwater for landscape irrigation and other uses.

    Reclaimed Water: Former wastewater that is treated to remove solids and impurities, and used for a variety of uses including sustainable landscaping irrigation, to recharge groundwater aquifers, and to meet commercial needs.

    Redevelopment: A process to rebuild or restore an area in a measurable state of decline, disinvestment, or abandonment. Redevelopment may be publicly or privately initiated. It can transform an underutilized or distressed area into an economically viable and productive part of the community.

    Renewable: Generating power from naturally-replenished resources such as wind, biogas or solar power.

    Renewable and Potable Water: A quality of water suitable for essential human uses such as drinking, cooking or cleaning, which is derived from a renewable source. In the manner used in this policy, treated surface water, including treated Central Arizona Project water, is considered renewable and potable, but effluent and groundwater are not.

    Renewable Energy Incentive District (REID): The district offers incentives to encourage utility or large-scale solar facilities to be developed on specifically selected sites in unincorporated Pima County.

    Renovation: The process of improving a broken, damaged, or outdated structure. Renovations are typically either commercial or residential. Renovation can refer to making something new, or bringing something back to life and can apply in social contexts. For example, a community can be renovated if it is strengthened and revived.

    Revitalization: Improves a neighborhood's physical, economic, and social conditions to enhance the overall quality of life and economic opportunities for neighborhood residents.

    Rezoning: A public process for zoning district changes and amendments, upon recommendations by the planning and zoning commission and adoption by the board of supervisors to change the range of uses for property, and implement the comprehensive plan.

    Right-of-way: A strip of land occupied or intended to be occupied by certain transportation and public use facilities, such as roadways, railroads, and utility lines.

    Riparian: Vegetated ecosystems along a water body through which energy, materials, and water pass. Riparian areas characteristically have a high water table or are subject to periodic flooding.

    Rural: A sparsely developed area where the land is primarily use for farming, forestry, resource extraction, very low density residential uses, or open space.

    Safe Yield: Safe yield is the term used to express the amount of water an aquifer or well can yield for consumption without producing unacceptable negative effects.

    Scale: The sense of proportion or apparent size of a building or building element as crated by the placement and size of the building in its setting; scale usually applies to how the sense is perceived in relation to the size of a human being and refers to the apparent size, not actual size, since it is always viewed in relationship to another building or element.

    Secondary Property Taxes: The County has a secondary property tax to fund special taxing districts such as the Regional Flood Control District and the Library District.

    Section 10 Permit: Section 10, of the Endangered Species Act, provides a clear regulatory mechanism to permit the incidental take of federally listed fish and wildlife species by private interests and non- Federal government agencies during lawful land, water, and ocean use activities. An applicant for an incidental take permit must submit a "conservation plan" that specifies, among other things, the impacts that are likely to result from the taking and the measures the permit applicant will undertake to minimize and mitigate such impacts.

    Sense of Place: The feeling associated with a location, based on a unique identity and other memorable qualities.

    Sewage Conveyance: Method of transporting wastewater by gravity along a downward-sloping pipe gradient.

    Single-occupancy Vehicle Mile Traveled (VMT): One person traveling alone in a vehicle for one mile.

    Smart Growth: Smart growth seeks to identify a common ground where developers, environmentalists, public officials, citizens, and financiers can find ways to accommodate growth. It promotes compact, mixed-used development that offers a high-quality living and working environment and encourages a choice of travel mode— walking, cycling, and transit, while protecting environmental features and resources.

    Special Assessment District (improvement district): Improvement Districts can be formed to implement a specific improvement for a particular area of the County as a special assessment district. An improvement district can only be formed by petition of the majority of the property owners in the affected area. This funding mechanism is typically used for neighborhood road improvements, street lighting, utilities and revitalization programs such as the formation of Arts District and others. The county has used Improvement Districts but for very discrete projects in specific neighborhoods.

    Specific Plan: A type of rezoning on larger parcels with phased development and with a unique set of development and design standards. Represented on the Comprehensive Plan maps as “Planned Development Communities.”

    Special Species Management Areas: Those areas that are crucial to the survival of three species of special concern to Pima County: the Cactus ferruginous pygmy-owl, Mexican spotted owl, and Southwest willow flycatcher.

    Sports Facilities Assessment: In December of 2012, Pima County worked with the Pima County Sports and Tourism Authority (PCSTA) to perform a County-wide sports facilities assessment. The study first determined the number of existing and planned sports facilities. We then assessed future facility needs for the overall community through interviews, workshops, and summits

    Sprawl: Low-density land-use patterns that are automobile-dependent, energy and land consumptive, and require a very high ratio of road surface to development served.

    Stocking Rates: The number of animals on a given amount of land over a certain period of time.

    Storefront retail: Storefront-style shopping areas cater to pedestrians and are characterized by ground-level walk-in retail activity.

    Stormwater: The flow of water which results from a rainfall event.

    Stormwater Harvesting System: A system for the on-site collection and retention of precipitation that has reached the ground, collected from paved, impervious or disturbed surfaces, which may consist of: a. earthworks (including but not limited to depressed landscape areas, basins, berms, swales); b. structures (including but not limited to curbs with inlets, scuppers or cuts, gabions, check-dams, permeable paving, rock mulch); and c. other green infrastructure and low impact development elements to slow and disperse stormwater and promote its infiltration into the soil. Study Area: The Study Area for the Comprehensive Plan is the entire 9,184 square miles of Pima County.

    Subsidence Area: The lowering of the land surface more than 3 inches as mapped by U.S. Geological Survey.

    Suburban: The low-to medium-intensity development patterns which surround the downtown or other more intense, urban areas of a city.

    Sun Corridor: The greater Phoenix-Tucson area, commonly referred to as the Arizona Sun Corridor, is one of eleven nationally- defined megapolitan areas in the United States. A megapolitan region is defined as a conglomeration of two or more intertwined metropolitan areas with a combined population of five million or more.

    Sustainability: The basis upon which an organism or a community can manage its own continuing viability, meeting the needs of the present without compromising the ability of future generations to meet their own needs.

    Target Areas – see Community Development Target Areas.

    Tech Launch Arizona: The UA created Tech Launch Arizona (TLA) to move inventions, technologies and intellectual property from the laboratory out into the marketplace.

    Tiger V Grant Funding: The U.S. DOT National Infrastructure Investment grant program provides transportation funding on a competitive basis for projects that have a significant impact on the nation, a metro area, or a region.

    Traditional Neighborhood Development (TND): A community type structured by a standard pedestrian shed oriented toward a common destination consisting of a mixed- use center or corridor, and in the form of a medium-sized settlement near a transportation route.

    Transfer of Development Rights (TDR): Transfers of development rights are used to transfer ownership of development potential from lands where development is less desirable to lands where it is more desirable. The land from which development is transferred is generally called the “Sending Property” and the property to which it is transferred is called the “Receiving Property.”

    Transit Oriented Development (TOD): A mixed use residential and commercial area designed to maximize access to public transportation, and often incorporate features to encourage transit ridership. A TOD neighborhood typically has a center with a transit station (streetcar, bus station etc.), surrounded by relatively higher- density development with progressively lower-density development spreading outward from the center.

    Unincorporated Pima County: Land within designated County jurisdictional boundaries and outside of any town or city boundaries.

    Urban: Urban areas are generally characterized by moderate and higher density residential development, commercial development, and industrial development, as well as the availability of public services required for that development (i.e. water, sewer, roads, transit etc.).

    Urban Heat Island: A developed urban or suburban area that is significantly warmer (2 degrees-10 degrees F or 1-6 degrees C) than surrounding rural areas due to the retention of heat by un-shaded buildings and paved surfaces. Urban heat islands can increase energy demands, air conditioning costs, air pollution and greenhouse gas emissions, and heat-related illness and mortality.

    Urban Form: The general pattern of building height and development intensity, and the structural elements that define a place physically, such as natural features, transportation corridors, open space, public facilities, as well as activity centers and focal elements.

    Vernacular Architecture: A style of architecture exemplifying common techniques, decorative features, and materials of a particular historical period, region, or group of people.

    Vision: A shared image of the future characterized by long-term thinking, and provides the foundation for the development of goals, policies, and implementation strategies. A vision is not a binding goal and may not be achievable in the lifetime of those participating in the drafting of the Comprehensive Plan.

    Volatile Organic Compounds: VOCs are ground-water contaminants of concern because of very large environmental releases, human toxicity, and a tendency for some compounds to persist in and migrate with ground-water to drinking-water supply well.

    Walkability: Walkability is a measure of how friendly an area is to walking. Walkability has many health, environmental, and economic benefits. Factors influencing walkability include the presence or absence and quality of footpaths, sidewalks, or other pedestrian rights-of-way, traffic and road conditions, land use patterns, shade, building accessibility, and safety, among others.

    Walkable Neighborhood: Definitions of neighborhood walkability may include walking proximity to amenities (such as movie theaters, clothing stores, parks, and libraries) or may refer to community-built environment design features of neighborhoods (such as street connectivity and sidewalk access).

    Wastewater: Water carrying wastes from homes, businesses, and industries that is a mixture of water and dissolved or suspended solids, or excess irrigation water that is runoff to adjacent land.

    Watercourse: Any lake, river, stream, creek, wash, arroyo, or other body of water or channel having banks and a bed through which waters flow at least periodically. The watercourse includes the streambed, channel banks, floodway and floodway fringe areas, and areas subject to sheet flooding (Pima County Zoning Code 16.08.740).

    Water Harvesting: The accumulating and storing of rainwater for reuse before it reaches the aquifer.

    Water Resource Impact Assessment: The review County staff performs on proposed rezoning applications.

    Water Resource Impact Review: The review County staff performs on a proposed Comprehensive Plan amendment.

    Watershed: The contributing drainage area located upstream of a specific point along a watercourse (Pima County Zoning Code 16.08.760).

    Xeriscapes: A style of landscape design requiring little or no irrigation or other maintenance, used in arid regions.

    Zoning Code: Regulatory document that specifies distinct areas of land use or zoning district, and also establishes development standards for each of those zoning districts. The Pima County Zoning Code also allows for Zoning Overlay Districts.

    Zoonotic: A disease of animals, such as rabies or psittacosis that can be transmitted to humans.

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