This combining district classification is intended to:

A.

Accommodate the orderly growth and development of public-use airports, defined as "public airports" by Public Utilities Code Section 21675;

B.

Apply standards to development in the vicinity of public-use airports which will:

1.

Limit physical, environmental, and operational obstructions to flight that may constitute hazards to aircraft or people on the ground,

2.

Limit the density of development so as to reduce the risks of damage to property or injury to persons in the event of an aircraft accident,

3.

Provide emergency landing opportunities where appropriate in accordance with the standards of the Napa County Airport Land Use Compatibility Plan (ALUCP),

4.

Reduce the adverse effects of aircraft noise and other aircraft-related impacts on land uses that may be sensitive to excessive noise;

C.

Avoid the construction of structures and establishment of uses that would be incompatible with the continued existence and planned expansion of a public-use airport;

D.

Provide notice to property owners, buyers and lessees of the existence of and normal operations of public-use airports in the vicinity;

E.

Consolidate, as much as possible, review of development for compatibility with public-use airports into existing county review processes.

(Ord. 1234 § 11 (part), 2004)

The:AC Combination District may be combined with any zoning district consistent with the purpose and provisions of this district. Regulations established by the:AC Combination District shall be in addition to the regulations of the principal zoning district with which they are combined, and in the event of a conflict between the two, the provisions of the:AC Combination District shall apply.

(Ord. 1258 § 5, 2005: Ord. 1234 § 11 (part), 2004)

The Angwin Airport - Parrett Field, has six Airport Compatibility Zones, each with varying Land Use Categories and Intensity Criteria. The Countywide Airport Land Use Compatibility Plan Chapter 4 Exhibit 4-1 Basic Compatibility Criteria, Angwin Airport - Parrett Field, adopted by the Napa County Airport Land Use Commission December 4, 2024, or as may be amended, shall apply in addition to the standards of the principal zoning district.

(Ord. No. 1511, § 1, 8-19-2025)

Editor's note— Ord. No. 1511, § 1, adopted August 19, 2025, amended the title of § 18.80.030 to read as herein set out. The former § 18.80.030 title pertained to ALUCP Zone E regulations.

The Napa County Airport has eight compatibility zones each with varying Land Use Categories and Intensity Criteria. The Countywide Airport Land Use Compatibility Plan Chapter 5 Exhibit 5-1 Basic Compatibility Criteria, Napa County Airport, adopted by the Napa County Airport Land Use Commission December 4, 2024, or as may be amended, shall apply in addition to the standards of the principal zoning district.

(Ord. No. 1511, § 2, 8-19-2025)

Editor's note— Ord. No. 1511, § 2, adopted August 19, 2025, amended the title of § 18.80.040 to read as herein set out. The former § 18.80.040 title pertained to ALUCP Zone D regulation.

Editor's note— Ord. No. 1511, § 3, adopted August 19, 2025, repealed § 18.80.050, which pertained to ALUCP Zone C regulations and derived from Ord. 1234, § 11(part), 2004).

Editor's note— Ord. No. 1511, § 4, adopted August 19, 2025, repealed § 18.80.060, which pertained to ALUCP Zone B Regulations and derived from Ord. 1234, § 11(part), 2004).

Editor's note— Ord. No. 1511, § 5, adopted August 19, 2025, repealed § 18.80.070, which pertained to ALUCP Zone A regulations and derived from Ord. 1234, § 11 (part), 2004).

The requirements of this chapter shall apply to any development requiring application for a general plan amendment, specific plan amendment, rezoning, variance, use permit, tentative parcel map, tentative subdivision map, or design review permit.

(Ord. 1234 § 11 (part), 2004)

A.

General. General plan amendments, specific plans, zoning or subdivision ordinance amendments, facility master plans, building regulations, or uses listed as Conditionally Compatible or Incompatibility as noted in the current Napa Countywide Airport Land Use Compatibility Plan, structure heights over applicable height limits within ALUCP compatibility zones, and Special Conditions Exception requests shall be referred to and reviewed by the ALUC, or designee(s), for a consistency determination prior to final approval.

B.

Process. When projects are referred to the ALUC, the following process shall be followed:

1.

The planning commission shall hold a public hearing and make a recommendation on the application and refer the project to the ALUC;

2.

The project shall be reviewed by the ALUC and the ALUC shall provide a ALUCP consistency determination. The ALUC may make recommendations to modify the project for consistency with the ALUCP;

3.

The county decision-making body shall then hold a public hearing and take final action on the project. If the ALUC finds the project to be inconsistent with the ALUCP, the board of supervisors may override that decision in accordance with state law.

(Ord. 1234 § 11 (part), 2004)

(Ord. No. 1511, § 6, 8-19-2025)

In addition to standard application materials, the applicant shall provide the following filing materials:

A.

A completed ALUC Referral Form.

B.

Property location data, including assessor's parcel number, street address, and subdivision lot number.

C.

An accurately scaled map depicting the project site location in relationship to the airport boundary and runway. Uses Not Normally Acceptable. For projects identified as being not normally acceptable, the applicant shall also address how their use has been appropriately designed to address identified criteria.

D.

A description of the proposed use(s), current general plan designation and zoning district, and the type of Major Land Use Action being sought from the Local Agency (e.g., zoning variance, special use permit, building permit).

E.

A detailed site plan and supporting data showing site boundaries and size; existing uses that will remain; location of existing and proposed structures, rooftop structures, landscaped areas, open spaces, and water bodies; ground elevations (above mean sea level); and elevations of tops of structures and trees. Additionally:

1.

For residential uses, the number of proposed dwelling units per acre (separately indicating any accessory dwelling units as defined by state law and local regulations).

2.

For nonresidential uses, the total floor area for each type of proposed use, the number of parking spaces, and the maximum number of people (employees, visitors/customers) potentially occupying the total site or portions thereof at any one time.

F.

Identification of any features, during or following construction, that would increase the attraction of birds or cause other wildlife hazards to aircraft operations at an airport or in its environs. Such features include, but are not limited to the following:

1.

Open water areas.

2.

Sediment pools, retention basins,

3.

Detention basins that hold water for more than forty-eight hours.

4.

Artificial wetlands.

5.

Landscaping that provides wildlife shelter and food sources.

G.

Identification of any characteristics that could create electrical interference, confusing or bright lights, glare, smoke, or other electrical or visual hazards to aircraft flight.

H.

Any environmental document (initial study, draft environmental impact report, etc.) that may have been prepared for the project.

I.

Staff Reports regarding the project.

J.

Other relevant information that the ALUC or ALUC Executive Office determines to be necessary to enable a comprehensive review of the proposed major land use action.

(Ord. 1234 § 11 (part), 2004)

(Ord. No. 1511, § 7, 8-19-2025)

A.

Except as provided in subsection (C) of this section, the county shall make the following findings for a general plan amendment, specific plan, zoning or subdivision ordinance amendment, building regulations, or uses listed as Conditionally Compatible or Incompatible:

1.

The proposed project has been referred to the ALUC for a consistency determination; and

2.

The ALUC has determined that proposed project is consistent with ALUCP compatibility policies and standards.

B.

Design Review. In approving a design review permit for new development, the decision-making body must find that the building or structure has been designed to meet ALUC design requirements.

C.

Local Override. To override a determination by the ALUC that a proposed project or use is inconsistent with the ALUCP, the Board of Supervisors, by a two-thirds vote, must make specific findings defined by state law (PUC Section 21670) that the action is consistent with the purposes of the ALUC statute.

(Ord. 1234 § 11 (part), 2004)

(Ord. No. 1511, § 8, 8-19-2025)