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A. Purpose. The purpose for establishing the timberland production zone (TPZ) district is to implement the Forest Taxation Reform Act of 1976 and the California Timberland Productivity Act of 1982 by administering the zone to maintain the optimum amount of the limited supply of timberland to ensure its current and continued availability for the growing and harvesting of timber and compatible uses; to discourage premature or unnecessary conversion of timberland to urban or other uses; to discourage expansion of urban services into timberland; and, to encourage investment in timberlands based upon reasonable expectation of harvest.

B. Definitions. For the purpose of the timberland production zone the following words shall have the respective meaning ascribed to them:

“Act” means the Forest Taxation Reform Act of 1976 and the California Timberland Productivity Act of 1982.

“Anniversary date” means the date on which timberland was initially zoned by the county as a timberland production zone pursuant to Cal. Gov’t. Code §§ 51112 and 51113.

“Board” means the Board of Supervisors.

“Commission” means the Planning Commission.

“Compatible use” is any use which does not significantly detract from the use of the property for, or inhibit, growing and harvesting timber.

“Contiguous” means two or more parcels of land that are adjoining or neighboring or are sufficiently near to each other as determined by the Board to be manageable forest unit.

“Mined lands” means the surface, subsurface and groundwater of an area where surface mining operations will be, are being or have been conducted, including all accessory access roads, land excavations, workings, mining wastes, and areas where structures, facilities and surface mining equipment, machines, tools, or other materials or property are located.

“Nonconforming use” means any use within a timberland production zone which lawfully existed on the effective date of zoning established pursuant to Cal. Gov’t. Code §§ 51112 and 51113 and continuing since that time which is not a compatible use.

“Permitted uses” are the uses which are allowed in the timberland production zone as of right without the necessity for issuance of a special use permit.

“Reclamation” means the process of land treatment that minimizes and mitigates otherwise unavoidable or existing water degradation, air pollution, damage to aquatic or wildlife habitat, flooding, erosion and other adverse effects from surface or underground mining operations, including adverse surface effects incidental to underground mines so that mined lands are reclaimed and restored to a useable condition readily adaptable for alternate land uses and that will constitute no danger to public health or safety. The process may extend to affected lands surrounding mined lands and may require backfilling, grading, resoiling, revegetation, soil compaction, stabilization or other measures.

“Recreation” means the use of land by the public with or without charge for any of the following: environmental studies or educational uses, walking, hiking, skiing, picnicking, camping, swimming, snowmobiling, horseback riding, pack trains, shooting, boating, fishing, hunting, or other outdoor games or sports.

“Run-of-the-river hydroelectric project” means all facilities appurtenant to its development and operation including generation facilities, power transmission system, access roads, conduits, diversions, penstocks and tail races.

“Surface mining operation” means all or any part of the process involved in the mining of minerals or construction materials on mined lands by removing overburden and mining directly from the mineral deposits, open pit mining of minerals naturally exposed, mined by the auger method, dredging and quarrying, or surface work incidental to an underground mine. In addition, surface mining operations include but are not limited to:

1. In-place distillation restoring or leaching;

2. The production and disposal of mining wastes;

3. Prospecting and exploratory activities;

4. Extractions of natural materials for building constructions and so forth.

“Timber” means trees of any species maintained for eventual harvest for forest products purposes, whether planted, stocked or of natural growth, standing or down, on privately or publicly owned land, including Christmas trees, but excluding nursery stock.

“Timberland” means land privately owned or land acquired for state forest purposes which is devoted to and used for growing and harvesting timber or for growing and harvesting timber and compatible uses and which is capable of growing an average annual volume of wood fiber of at least 15 cubic feet per acre.

“Timberland production zone” or “TPZ” means timberland as defined which has been zoned pursuant to Cal. Gov’t. Code §§ 51112 and 51113 and is devoted to and used for growing and harvesting of timber or for growing and harvesting of timber and compatible uses.

C. Compatible Uses. A compatible use is any use which does not significantly detract from the use of the property for, or inhibit, growing and harvesting of timber, and shall include, but not be limited to, any of the following, unless in a specific instance such a use would be contrary to the preceding definition of compatible use:

1. Management for watershed not involving the construction of facilities;

2. Management for fish and wildlife habitat for hunting and fishing;

3. A use integrally related to the growing, harvesting and processing of forest products including but not limited to roads, log landings, log storage areas, temporary portable wood processing equipment and fuel wood operations;

4. The erection, construction, alteration or maintenance of gas, electric, water, or communication transmission facilities of public agencies;

5. Grazing;

6. A residence or other structure necessary for the management of land zoned as timberland production.

D. Permitted Uses. The following shall be permitted uses so long as such use or uses do not significantly detract from the use of the property for or inhibit growing and harvesting timber:

1. One single-family dwelling necessary for the management of land zoned as timberland production, including an attached or detached garage, on a legally created parcel consisting of a minimum of 80 acres.

2. Construction and use of nonhabitable structures for storage of equipment necessary for the management of land zoned as timberland production.

3. Management of land and forests primarily for the commercial production and harvest of forest products, including grazing, beekeeping, horticulture, tree crops, watershed management, fish and wildlife habitat, and any uses directly incidental to and wholly compatible with the primary uses.

4. Management of land and forests in a manner designated to protect them from fire, insects, disease, or other potential or existing catastrophe.

5. Timber removal, including necessary access roads, log landing and storage areas provided such are constructed and maintained in accordance with the forest practice rules adopted by the State Board of Forestry.

6. Hunting, fishing, camping and other similar recreational uses as defined, not requiring any permanent structures.

7. Temporary or mobile living quarters appurtenant to timber management, said uses only occurring during harvest operations.

8. Minor maintenance, reconditioning, minor alterations and emergency activities, including the maintenance of existing vegetation clearances, of electric, water or communication facilities by public agencies under the jurisdiction of the California Public Utilities Commission.

9. Reforestation projects, projects under the auspices of the California Forest Improvement Program (CFIP), or other like local, state, or federal reforestation project or environmental enhancement program.

10. Conservation easements, wildlife preserves, wildlife management areas, and like uses and improvements.

11. Erosion control projects.

12. Equestrian uses including horseback riding, trails, corrals, and temporary boarding not involving permanent structures.

13. Weather, stream, and other hydrological data collection stations.

14. Excavations or grading for the exclusive purpose of obtaining materials for roadbed construction and maintenance conducted in connection with timber operation or forest management on land owned by the same person or entity, and transported no further than counties bordering or immediately adjacent to Sierra County. Limited to excavation and grading that is conducted adjacent to timber operation or forest management roads and shall not apply to on-site excavation or grading that occurs within 100 feet of a class one watercourse or 75 feet of a class two watercourse, or to excavation for materials that are, or have been, sold for commercial purposes. Permitted only if slope stability and erosion are controlled in accordance with subdivision (f) of California Code of Regulations Title 14, § 3704 and subdivision (d) of California Code of Regulations Title 14, § 3706 and, upon closure of the site, the person closing the site implements, where necessary, revegetation measures and post-closure uses in consultation with the Department of Forestry and Fire Protection. Subject to the issuance of a grading permit.

E. Conditional Uses. The following uses shall be allowed only after application and issuance of a special use permit:

1. Erection, construction, relocation of gas, electric, water, geothermal, oil or other transmission facility including communication transmission facilities and minor utility buildings for private utility companies and excluding individual service drops to a parcel.

2. Run-of-the-river hydroelectric projects including all facilities appurtenant to their development and operation including generation facilities, power transmission systems, access roads, conduits, diversions, penstocks and tail races. Special use permits for this category of project shall be valid for a term not to exceed three years, with extensions of up to five year increments, and extensions may only be granted by the Commission after an inspection of the property by county staff has been conducted to evaluate the compliance of the project with project conditions and to assure that the findings required by subsection (G) of this section continued to be made in the affirmative.

3. Heliports and accessory uses not including any structures.

4. Processing plants and packaging plants for forest products, including the necessary buildings and support facilities.

5. Commercial gas, oil, geothermal, wind, solar, water and other well construction and related facilities.

6. Surface mining operations except as provided in subsection (D)(14) of this section, including but not limited to management, development, and use of mineral resources such as sand, gravel, cinders, rock, ore, minerals and steam in limited areas within a timberland production zone when the areas proposed for use are: (1) not productive timberland; (2) deemed to have been used historically as mined lands as defined herein and due to this historical use, and land and/or area proposed for use is not productive timberland; or (3) a finding can be made that reclamation as defined herein shall ultimately enhance, reclaim and develop the property into productive timberland as defined herein. Special use permits for this category of project shall be valid for a term not to exceed three years, with extensions of up to five year increments and extensions may only be granted by the Commission after an inspection of the property by county staff has been conducted to evaluate the compliance of the project with project conditions and to assure that the findings required by subsection (G) of this section continue to be made in the affirmative.

7. Organized camps.

8. Fire stations, information centers, ranger stations, forestry conservation camps, environmental education centers, field stations, and trailhead facilities, including trails.

9. Shooting and target ranges and fishing ponds.

10. Campgrounds, equestrian uses, hunting, fishing, or other forms of recreational use involving the construction of primitive/minor improvements to support the seasonal recreation use which are clearly secondary and incidental to the timberland production uses occurring on the property.

11. Cultural events whether public or private.

12. Ponds.

13. Communication towers.

F. Special Requirements for a Single-Family Residence. The following development standards shall be required for any single-family residence:

1. Setbacks for any portion of a structure to all property lines shall be 100 feet.

2. Height limitation for residential and residential accessory structures shall be 35 feet and not exceeding two stories.

3. Off-street parking shall be provided for a minimum of two vehicles.

4. The applicant shall provide evidence satisfactory to the Planning Department of legal and physical access to the proposed building site.

5. Accessory structures associated with a single-family dwelling and attached or detached garage shall be allowed only for a generator, well, vehicles, and any required utility storage and/or protection, and a single equipment storage structure or other like structure deemed consistent with this section by the Sierra County Planning Department. The private garage, if detached, shall not be constructed in advance of the single-family dwelling.

6. A certification executed by the California Department of Forestry and Fire Protection shall accompany any application for a single-family residence attesting to the compliance with any requirements in place for fire protection, clearances, water supply, and access.

G. Findings Required. The following findings shall be required to be made by the Planning Director, the Planning Commission, the Board of Supervisors, or other agency in the issuance of any grant, lease, permit, license or other form of entitlement involving a parcel of land in the timberland production zone:

1. Such issuance or grant of entitlement shall not significantly detract from the use of the property for or inhibit growing and harvesting of timber.

2. Such issuance or grant of entitlement shall not preclude forest management within the timberland production zone.

3. The issuance or grant of entitlement involves an area which is located and designed to minimize interference with timber harvesting operations and which does not render significant amounts of timber or forest products as inaccessible or unharvestable by virtue of physical impediment or increased costs.

4. The issuance of grant of entitlement involves a use of the parcel which has been located and designed to minimize negative impacts to the removal of timber; has been located and uses existing cleared or open-space areas incidental to forest production.

H. Minimum Parcel Size and Area.

1. Parcels in the timberland production zone shall have a minimum acreage of 80 acres.

2. Parcels zoned as timberland production zone may not be subdivided into parcels of less than 640 acres. Any such action to divide or otherwise modify a parcel zoned timberland production zone shall be in strict conformance with the county general plan.

I. Parcel Qualifications. The following standards are required to be met by parcels being considered for inclusion in the timberland production zone. Persons wishing inclusion of their parcels in the timberland production zone shall demonstrate conformance of their parcels with such standards:

1. The land shall be site quality Class III or higher according to the rating classification of the State Board of Forestry.

2. The land shall meet or exceed minimum parcel size specified by this title.

3. The existing uses shall be compatible, permitted, or conditional uses as set forth in this chapter.

4. The parcel shall meet the timber stocking standards as set forth in Cal. Pub. Res. Code § 4561 and the forest practice rules adopted by the State Board of Forestry for the district in which the parcel is located, or the owner must sign an agreement with the Board to meet such stocking standards and forest practice rules by the fifth anniversary of the signing of such agreement. If the parcel, upon the fifth anniversary of the signing of the agreement, has been determined by the Board not to meet the sticking standards in effect on the date that the agreement was signed, the Board shall immediately rezone the parcel and specify a new zone for the parcel, which is in conformance with the county general plan and whose primary uses are other than timberland.

5. A plan for forest management of the parcel shall be prepared or approved as to content by a registered professional forester. Such plan shall provide for the eventual harvest of timberland within a reasonable period of time as determined by the registered professional forester.

6. The owner of the parcel shall accomplish or be in the process of accomplishing any three of the following:

a. Conducted commercial harvesting operations on the property.

b. Provide legal and physical access to the property so commercial operations can be carried out.

c. Located the boundaries of the property.

d. Conducted disease or insect control work on the property.

e. Performed thinnings, slash disposal, pruning and other appropriate silvicultural work on the property.

f. Developed a fire protection system on the property or has a functioning fire protection plan.

g. Provided for erosion control on existing roads and skid trails, and has maintained existing roads.

h. Planted a significant portion of the unstocked areas of the parcel.

J. Application, Application Contents and Hearings. Application forms for inclusion in the timberland production zone shall be provided by the County Planning Department and the following information shall be provided:

1. List of all owners of record interest in the parcel;

2. Copies of all deeds and leases affecting the parcel considered for inclusion in the timberland production zone;

3. Map identifying the boundaries of the property showing topography, vegetative types, site classification, timberland areas and nontimberland areas;

4. Legal description or County Assessor parcel number of the parcel;

5. A plan for forest management and all information as outlined in subsection (I) of this section;

6. Any fees required by resolution or ordinance of the Board.

The Planning Department shall process all applications for inclusion of property in the timberland production zone in compliance with Cal. Gov’t. Code § 51113.

K. Effect of Zoning and Removal from Zone.

1. Parcels included in timberland production zone shall be zoned for an initial term of 10 years. On the first and each subsequent anniversary date of the initial zoning, one year shall be added to the initial term of 10 years, unless a notice of rezoning is provided in conformance of the Act.

2. Parcels zoned as timberland production zone shall be restricted as to their use of growing and harvesting of timber and compatible uses. This zoning shall give rise to the presumption that timber operations may reasonably be expected to and will occur on the parcel(s). If it is determined by the county that such property is not being managed consistent with this title and/or the Act, the county may initiate proceedings to rezone the property out of timberland production zone.

3. Any rezoning of a parcel from timberland production zone to another zoning district shall be in strict conformance with the county general plan and act.

4. The Board or a landowner may petition for a rezone of property in a timberland production zone which shall become effective 10 years from the date of approval as provided in Cal. Gov’t. Code §§ 51120 and 51121.

5. The landowner of property within a timberland production zone may petition for an immediate rezoning of the property as provided in Cal. Gov’t. Code § 51130.

6. Pursuant to Cal. Gov’t. Code § 51142, in the case of approval of an immediate rezoning, the landowner may submit a written application, requesting the waiver of tax recoupment fees and explaining the reasons therefor, to the Board as authorized in county resolution 95-120. The Board upon receiving an application may, if it determines that it is in the public interest, waive all or any portion of the fees.

L. Records. A notice of timberland production zone status, together with all information required by the Act, shall be filed for record with the County Recorder as provided in Cal. Gov’t. Code § 51117 when land is zoned as timberland production or subsequently rezoned from timberland production zone.

M. Designated Parcels. The following County Assessor parcel numbers (APNs), or portions thereof, are zoned as timberland production zone:

001-010-002

008-040-013

013-050-004

001-020-001

008-040-017

013-050-006

001-020-003

008-040-018

013-060-001

001-030-007

008-050-005

013-060-004

001-070-003

008-050-006

013-060-005

001-080-005

008-050-007

013-060-007

001-100-005

008-050-010

013-070-003

001-110-004

008-050-022

013-070-004

001-120-001

008-050-023

013-070-005

001-130-002

008-060-027

013-070-011

002-020-002

008-060-034

013-070-014

002-020-005

008-070-002

013-070-015

002-020-008

008-070-007

013-070-016

002-020-011

008-070-008

013-100-001

002-020-013

008-070-022

013-100-002

002-020-015

008-070-024

013-100-004

002-020-018

008-070-027

013-110-001

002-040-002

008-090-027

013-110-152

002-040-004

008-110-007

013-120-001

002-040-005

008-110-011

013-130-001

002-040-011

008-120-013

014-010-002

002-050-008

008-120-015

014-010-004

002-080-004

008-120-017

014-010-006

002-110-017

008-130-010

014-020-001

002-140-028

008-130-012

014-020-003

002-150-004

009-150-028

014-020-006

004-060-018

009-150-029

014-030-008

004-060-020

010-010-003

014-030-009

004-060-021

010-010-007

014-040-001

004-070-005

010-010-009

014-040-003

004-070-008

010-010-010

014-040-005

004-070-009

010-010-013

014-040-006

004-070-013

010-010-015

014-050-005

004-070-014

010-010-016

014-050-006

004-070-015

010-010-017

014-050-007

004-080-002

010-020-001

014-060-001

004-080-009

010-020-003

014-060-003

004-080-010

010-020-004

014-060-005

004-080-014

010-020-005

014-060-006

004-080-016

010-020-008

014-070-002

004-080-017

010-030-004

014-070-004

004-090-004

010-030-008

014-070-006

004-090-007

010-030-012

014-090-002

004-090-008

010-030-013

014-090-004

004-100-008

010-030-015

014-090-007

004-100-009

010-040-001

014-090-008

004-100-013

010-040-002

014-100-001

004-150-008

010-040-004

014-100-005

004-150-009

010-040-006

014-110-002

004-150-011

010-040-008

014-110-003

004-150-017

010-040-010

014-110-006

004-150-029

010-050-005

014-110-010

004-150-032

010-050-007

014-110-011

004-150-033

010-050-009

014-110-012

004-160-006

010-050-012

014-110-013

004-160-008

010-050-013

014-120-002

004-170-002

010-050-015

014-120-010

004-170-003

010-060-001

014-140-001

004-170-007

010-070-004

014-140-003

004-170-009

010-070-008

014-140-006

004-180-006

010-070-009

014-150-002

004-180-007

010-070-016

014-150-004

004-180-008

010-070-017

014-150-006

004-180-011

010-080-001

014-160-004

004-190-006

010-080-006

016-040-001

006-010-006

010-110-002

016-040-091

006-010-007

010-110-006

016-040-092

006-010-008

010-110-010

016-060-013

006-010-024

012-010-003

016-090-054

006-010-026

012-010-008

016-120-007

006-010-029

012-010-012

016-120-008

006-010-043

012-010-013

016-240-001

006-010-044

012-020-002

018-010-005

006-010-047

012-020-005

018-010-008

006-020-001

012-020-006

018-010-013

006-020-002

012-020-009

018-030-009

006-020-003

012-020-010

018-050-028

006-020-005

012-030-004

018-050-037

006-020-009

012-040-001

018-080-004

006-020-012

012-060-005

019-030-014

006-020-014

012-060-009

019-030-015

006-030-001

012-070-007

019-050-001

006-030-011

012-070-008

019-110-005

006-030-114

012-070-009

019-110-007

006-040-001

012-070-012

019-120-014

006-040-005

012-070-018

019-130-008

006-080-017

012-070-019

019-130-012

006-080-028

012-090-107

019-130-013

006-080-029

012-090-112

019-140-001

006-100-002

012-090-113

019-140-002

006-100-015

012-140-008

019-140-003

007-050-007

012-140-032

019-140-004

007-050-009

012-140-054

019-140-005

007-050-010

013-010-005

019-140-006

007-080-009

013-010-008

019-140-007

007-100-003

013-020-005

021-030-007

007-100-004

013-020-007

021-040-001

007-100-005

013-020-009

021-040-016

007-110-001

013-030-002

021-040-017

007-110-008

013-030-004

021-050-004

008-010-005

013-030-006

021-060-001

008-030-006

013-040-001

021-100-004

008-030-010

013-040-003

023-040-004

008-040-002

013-040-007

023-040-007

008-040-003

013-040-008

023-110-010

008-040-007

013-050-002

023-110-012

008-040-012

and, a 400-foot corridor described as follows:

Beginning at a point lying on the east line of said Section 22, bearing North 00"17' West, approximately 1886 feet from the southeast corner of said Section 22, said POINT OF BEGINNING being further described as lying on the southerly line of a four hundred foot wide access corridor as described below;

Thence along said southerly line the following courses:

South 74°32'45" West 69.45 feet; North 85°49'33" West 245.04 feet; North 77°23'28" West 244.55 feet; North 89°07'10" West 252.14 feet; South 86°52'29" West 544.51 feet; South 76°37'46" West 220.79 feet; North 81°33'32" West 295.19 feet; South 89°15'05" West 235.21 feet; North 62°12'47" West 256.37 feet; South 69°31'25" West 236.24 feet; South 71°44'43" West 276.56 feet; South 86°33'54" West 243.99 feet; North 86°46'05" West 243.47 feet; North 72°24'59" West 130.15 feet; North 60°11'28" West 114.17 feet; South 51°33'08" West 174.54 feet; South 50°50'54" West 207.63 feet; South 57°23'30" West 253.04 feet; South 73°52'54" West 215.45 feet; South 83°02'10" West 308.64 feet; South 88°27'28" West 130.13 feet; North 52°43'36" West 150.88 feet; North 32°04'30" West 253.31 feet; North 70°12'41" West 609.55 feet; North 49°37'45" West 96.82 feet; North 68°18'02" West 112.56 feet; North 77°40'47" West 84.50 feet; South 56°54'09" West 349.64 feet; South 79°02'59" West 220.20 feet; South 59°49'29" West 581.49 feet; South 72°06'54" West 259.73 feet; South 68°44'10" West 175.86 feet; South 83°37'57" West 280.25 feet; North 74°16'38" West 867.55 feet; North 74°07'19" West 289.54 feet; North 64°41'29" West 221.42 feet; North 81°40'38" West 331.48 feet; North 72°14'43" West 55.17 feet; North 86°36'59" West 160.36 feet; North 75°32'25" West 251.04 feet; North 44°40'42" West 118.86 feet; North 47°10'11" West 133.49 feet; North 66°31'54" West 151.47 feet; North 87°01'57" West 81.73 feet;

South 79°13'07" West 337.38 feet to the west line of said Section 21:

Thence North 01°20'23" East along said west line 409.12 feet to the northerly line of said 400-foot wide access corridor;

Thence along said northerly line in the following courses:

North 79°13'07" East 299.69 feet; South 87°01'57" East 202.29 feet; South 66°31'54" East 292.04 feet; South 47°10'11" East 210.43 feet; South 75°32'25" East 101.84 feet; South 86°36'59" East 172.01 feet; South 72°14'43" East 72.60 feet; South 81°40'38" East 358.21 feet; South 64°41'29" East 248.16 feet; South 74°27'43" East 244.62 feet; North 83°37'57" East 150.55 feet; North 68°44'10" East 135.36 feet; North 72°06'54" East 228.46 feet; North 59°49'29" East 606.17 feet; North 79°02'59" East 209.66 feet; North 56°54'09" East 438.75 feet; South 77°40'47" East 284.71 feet; South 68°18'02" East 211.13 feet; South 66°20'01" East 788.87 feet; South 32°04'30" East 231.93 feet; South 83°02'10" West 204.86 feet; North 73°52'24" East 125.46 feet; North 57°23'30" East 172.24 feet; North 50°50'54" East 187.22 feet; North 51°33'08" East 448.11 feet; South 60°11'28" East 343.04 feet; South 72°24'59" East 36.95 feet; South 86°46'05" East 169.81 feet; North 86°33'54" East 168.67 feet; North 71°44'43" East 216.79 feet; North 69°31'25" East 407.77 feet; South 62°12'47" East 333.85 feet; North 89°12'05" East 165.64 feet; South 81°33'32" East 250.27 feet; North 76°37'46" East 179.60 feet; North 86°52'59" East 394.36 feet; South 89°07'10" East 307.19 feet; South 77°23'28" East 256.14 feet; South 85°49'33" East 146.35 feet; North 74°32'45" East 96.01 feet; North 66°00'04" East 13.39 feet to said east line of Section 22; Thence South 00'17" West along said east line, 416.51 feet to said POINT OF BEGINNING.

The basis of bearings for this description is an assumed bearing of North 00'17" West for said east line of section 22, as digitized from the U.S.G.S. quadrangle map of this area. (Ord. 1066, eff. 12/17/15; Ord. 1031, eff. 1/20/11; Ord. 1030, eff. 1/20/11; Ord. 981, eff. 10/19/06; Ord. 974, eff. 6/1/06; Ord. 959, eff. 6/30/04; Ord. 933, eff. 6/5/02; Ord. 919, eff. 7/4/01; Ord. 914, eff. 10/19/00; Ord. 874, eff. 12/17/98; Ord. 873, eff. 12/31/99; Ord. 782, eff. 5/1/92; Ord. 640, eff. 12/28/82; Ord. 603, eff. 2/17/81; Ord. 586, eff. 8/19/80; Ord. 522, eff. 2/7/78; Ord. 518, eff. 2/2/78; Ord. 500, eff. 7/7/77; Ord. 488, eff. 3/3/77; Ord. 487, eff. 3/3/77; Prior code § 15.12.310)