San Dimas City Zoning Code
CHAPTER 18
128 INDUSTRIAL ZONES
Note: Prior Ordinance History: Ords. 162 and 228.
§ 18.128.010 General Purpose.
The general purpose of this chapter is to set forth a wide variety and complexity of industrial uses and processes and those retail uses incidental to the permitted industrial uses which may function efficiently and harmoniously within an industrial zone. Specialized uses and public service facilities are included in the lists of each zone. The installation and operation of facilities and equipment necessary and appropriate to the uses in each zone are regulated with consideration for the special requirements of adjacent zones. Performance standards are prescribed to assist in controlling industrial concentrations, activities and equipment for the mutual benefit of all persons, businesses and uses in and around the zoned area.
(Ord. 37 § 262.00, 1961; Ord. 298 § 1, 1971)
§ 18.128.020 Purpose.
The purpose of the I-P industrial park zone is to provide a district which will assure an environment conducive to research and development, fabrication and assembly, research institutions and administrative facilities all well designed and properly landscaped.
(Ord. 37 § 262.02, 1961; Ord. 298 § 1, 1971)
§ 18.128.030 Uses permitted.
Buildings, structures and land shall be used and buildings and structures shall hereafter be erected, structurally altered or enlarged only for those uses enumerated in this article, plus other uses as the director of community development may deem to be similar and not more obnoxious or detrimental to the public health, safety and welfare than said enumerated uses. All uses shall be conducted within a totally enclosed building, except as permitted by a conditional use permit. Outside storage is exempt from conditional use requirements provided that outdoor storage is maintained in accordance with the development standards set forth in Section 18.128.050.
A.
Research and development laboratories and institutes;
B.
Electro-mechanical and electronic products and instruments manufacturing;
C.
Cartography, bookbinding, printing, lithography, blueprinting, photoengraving;
D.
Fabrication and designing of components, metallurgical products;
E.
Precision machine shops for prototype production;
F.
Assembly and production of products which are the result of research and development conducted on the premises;
G.
Administrative, professional, medical, business offices and such facilities as are accessory functions of permitted uses in this section;
H.
Cafeterias, cafes, restaurants, auditoriums or recreational facilities as are accessory to the primary use permitted on the premises;
I.
Communication equipment buildings, motion picture processing, radio and television broadcasting studios, recording studios;
J.
Residential uses for plant security personnel;
K.
Box lunch and catering services;
L.
Glass edging, beveling and silvering in connection with the sale of mirrors;
M.
Mail order houses, including warehousing;
N.
Furniture and household goods, transfer and storage;
O.
Stained glass assembly;
P.
Optical products;
Q.
Pharmaceutical research and processing;
R.
Vitamin processing.
(Ord. 37 § 262.04, 1961; Ord. 298 § 1, 1971; Ord. 489 § 1, 1975; Ord. 548 § 1, 1976; Ord. 1338, 6/23/2026)
§ 18.128.040 Conditional uses.
The following uses may be permitted upon the granting of a conditional use permit pursuant to Chapter 18.200:
A.
Chemical laboratories, compounding of chemicals for research and development;
B.
Heliports;
C.
Animal experimental research institute;
D.
Outdoor uses incidental to and directly related to those permitted in Section 18.128.030.
(Ord. 37 § 262.06, 1961; Ord. 298 § 1, 1971; Ord. 489 § 2, 1975)
§ 18.128.050 Property development standards.
The following property development standards shall apply to all land, building or structures in the I-P zone:
A.
Lot Area. There shall be a minimum of twenty thousand square feet in each lot.
B.
Lot Dimensions. All lots shall comply with the following minimum standards:
1.
Width. No minimum requirement.
2.
Depth. Each lot shall have a minimum depth of one hundred fifty feet.
C.
Maximum Building Coverage. The maximum coverage of a parcel by all structures shall not exceed sixty percent of the lot area.
D.
Building Types.
1.
Main Building. All main buildings constructed in an I-P zone shall be of Type I, Type II or Type III construction as defined in the latest edition of the building code as adopted by the city council.
2.
Accessory Buildings. Accessory buildings used for purposes incidental to the primary activity may be of Type IV construction as defined in the building code. The accessory building shall not exceed fifteen percent of the area of the main building or buildings.
E.
Building Height.
1.
Buildings, as distinguished from masts, towers, chimneys and similar structures, shall conform to the height limits of the building code.
2.
Structures other than buildings, including chimneys, tanks, water and communications structures which are not accessory to buildings or appurtenant thereto, may be erected to heights no greater than forty-five feet above ground level unless a greater height is approved by conditional use permit.
F.
Yards.
1.
Front Yards. The minimum required depth of the front yard shall be thirty feet, and the same shall be landscaped and maintained.
2.
Side Yards. The minimum required side yard shall be twenty feet in depth where such side yard is adjacent to a street. Required side yards adjacent to a street shall be landscaped. No side yard is required for an interior lot.
3.
Rear Yards. There is no minimum required rear yard except that in the event the rear of the lot abuts upon a street, a rear yard meeting all of the minimum requirements for a front yard shall be provided.
4.
Buffer Yard. A buffer yard of not less than fifty feet in width shall be provided along any residential district boundary line, and thirty feet of such yard nearest the district boundary line shall be improved as a planting strip. The required landscaping shall be of specimen variety and shall include trees. In the event a street or alley is situated between a residential and industrial district, no buffer yard shall be required.
G.
Walls. Where an industrial zone sides or rears upon any residential zone or an alley which abuts a residential zone, there shall be a solid masonry wall not less than six feet in height erected along and adjacent to the property line, except that such fence shall be reduced to not more than forty-two inches in height in any required yard abutting a street.
H.
Off-Street Parking. The provisions of Chapter 18.156 shall apply.
I.
Utilities. All utilities on the site shall be installed underground.
J.
Signs. The provisions of Chapter 18.152 shall apply.
K.
Landscaping. Landscaping where required by this article shall be installed and maintained as necessary to keep such landscaping alive, attractive and free of disease. Landscaping shall consist of trees, shrubs and ground cover in appropriate number and density, and a complete sprinkler system. Maintenance shall include, but shall not be limited to, necessary weeding, fertilizing and watering. Three copies of the complete landscaping plans prepared by a landscape architect shall be submitted to the planning director for approval.
L.
Mechanical Equipment. Air conditioning units, electrical switch gear and panels, compressors and similar mechanical and electrical equipment shall be completely screened within an enclosure compatible with the appearance of neighboring structures.
M.
Development Plan Approval. Before any building or structure is erected on any lot in this zone, a development plan shall have been submitted to and approved pursuant to the provisions of Chapter 18.12.
N.
Outdoor Storage.
1.
Outdoor storage areas shall be oriented away from view from any public right-of-way. Storage that can be seen from a public right-of-way shall be screened by completely opaque materials in such a way that the materials within cannot be seen.
2.
Trees, shrubs and ground cover shall be provided in addition to other screening, and shall be sprinklered by an automatic system. Landscaping and sprinkler plans are to be approved by the planning division. Landscaping may totally replace other methods of screening if approved by the planning division.
(Ord. 37 § 262.08, 1961; Ord. 298 § 1, 1971; Ord. 489 § 3, 1975; Ord. 1324, 6/10/2025)
§ 18.128.060 Performance standards.
All uses established or placed into operation after the effective date of this article shall comply at all times hereafter with the following limitations or performance standards:
A.
Fire and Explosion Hazards. All activities involving inflammable or explosive materials, and all storage of such materials, shall be provided with adequate safety devices against the hazard of fire and explosion. Adequate firefighting and fire suppression equipment and devices standard in industry shall be provided. All incineration is prohibited except as provided by the air pollution control district of the county.
B.
Radioactivity and Electrical Disturbance. Devices which radiate radio-frequency energy shall be so operated as not to cause interference with any activity carried on beyond the boundary line of the property upon which the device is located. "Radio-frequency energy" is defined as electromagnetic energy at any frequency in the radio spectrum between ten kilocycles and three million megacycles.
C.
Sound. Sound related to industrial or manufacturing processes, excluding traffic noise, shall be muffled so as not to become objectionable due to intermittence, beat frequency or shrillness. Sound pressure levels above those shown in the following table, when measured at the boundary line of the property on which the sound is generated shall be considered objectionable:
Octave-Band Range in Cycles Per Second | Sound Pressure Level in Decibels 0.0002 dynes/cm2 |
|---|---|
Below 75 | 72 |
75—150 | 67 |
151—300 | 59 |
301—600 | 52 |
601—1200 | 46 |
1201—2400 | 40 |
2401—4800 | 34 |
Above 4800 | 32 |
If the noise is not smooth and continuous or is not present between the hours of ten p.m. and seven a.m., one or more of the following corrections shall be applied to the above octave-band levels:
Corrections in Decibels | |
|---|---|
Daytime operation only | +5 |
Noise source operates less than 20% of any one-hour period | +5 |
Noise source operates less than 5% of any one-hour period | +10 |
Noise of impulsive character, such as hammering | -5 |
Noise of periodic nature such as humming or screeching | -5 |
The sound pressure level shall be measured with a sound level meter and associated octave band analyzer conforming to standards prescribed in publications by the American Standards Association.
D.
Vibration. Every use shall be so operated that the ground vibration inherently and recurrently generated is not perceptible, without instruments, at any point on any boundary line of the lot on which the use is located.
E.
Smoke, Dust, Fumes and Contaminants. Industrial or manufacturing processes out of which evolve smoke, dust, fumes, particulate matter, contaminants and specific contaminants, shall comply with the latest rules and regulations of the air pollution control district of the county.
F.
Odors. Odors shall not be in such quantities as to be offensive beyond the boundary line of the parcel from which the odors emanate.
G.
Toxic gases. Toxic gases or other toxic matter shall not be emitted which can cause damage to health, to animals or vegetation, or other forms of property, or which can cause any soiling beyond the boundary line of the parcel on which the use is located.
H.
Emission of Heat and Glare. Every use shall be so operated that it does not emit heat or glare in such quantity or degree as to be readily detectable on any boundary line of the property on which the use is located.
I.
Outdoor Storage and Waste Disposal. All outdoor storage facilities for waste materials and trash shall be enclosed by a solid masonry wall adequate to conceal such facilities from adjacent properties. No material or waste shall be deposited upon a subject lot in such form or manner that they may be transported from the lot by acts of nature.
(Ord. 37 § 262.10, 1961; Ord. 298 § 1, 1971)
§ 18.128.070 Purpose.
The purpose of the M-1 light manufacturing zone is to provide for the development of industrial uses which include fabrication, manufacturing, assembly or processing of materials that are already in processed form, wholesaling and warehousing.
(Ord. 37 § 263.00, 1961; Ord. 298 § 1, 1971)
§ 18.128.080 Uses permitted.
Buildings, structures and land shall be used and buildings and structures shall hereafter be erected, structurally altered or enlarged only for those uses enumerated in this article, plus other uses as the director of community development may deem to be similar and not more obnoxious or detrimental to the public health, safety and welfare than said enumerated uses. All uses shall be subject to the development standards set forth in Section 18.128.110. All uses shall be conducted within a totally enclosed building, except as permitted by a conditional use permit. Outside storage is exempt from conditional use requirements provided that outdoor storage is maintained in accordance with the development standards set forth in Section 18.128.110.
A.
Those uses permitted in the I-P zone.
B.
Upholstery shops.
C.
Boat building and repair.
D.
Packaging businesses.
E.
Bottling plants.
F.
Ceramic products, using only previously pulverized clay and fired kilns using only electricity or gas.
G.
Electrical or neon sign manufacture and maintenance.
H.
Garment manufacturing.
I.
Ice and cold storage plants.
J.
Machinery Shops.
1.
Blacksmith shops;
2.
Cabinet or carpentry shops;
3.
Machine shops;
4.
Paint shops (excluding manufacturing);
5.
Punch presses;
6.
Sheet metal shops;
7.
Tinsmiths;
8.
Welding shops.
K.
Manufacturing, compounding, processing, packaging or treatment of products such as:
1.
Alcoholic beverages;
2.
Bakery goods;
3.
Candy;
4.
Cosmetics;
5.
Dairy products;
6.
Drugs;
7.
Food products (excluding sauerkraut, vinegar, yeast and rendering of fats and oils);
8.
Fruit and vegetable packaging;
9.
Perfumes;
10.
Toiletries.
L.
Manufacturing, compounding, assembly or treatment of articles from the following previously prepared materials:
1.
Bone;
2.
Canvas;
3.
Cellophane;
4.
Cork;
5.
Feathers;
6.
Felt;
7.
Fiber;
8.
Fur;
9.
Glass;
10.
Hair;
11.
Horns;
12.
Leather;
13.
Metals;
14.
Paints not employing a boiling process;
15.
Paper;
16.
Plasters;
17.
Plastics and synthetics;
18.
Precious and semi-precious metals and stones;
19.
Shells;
20.
Textiles;
21.
Tobacco;
22.
Wood;
23.
Yarns;
24.
Petroleum and petroleum products;
25.
Rubber and metal stamps;
26.
Shoes;
27.
Stone monument works.
M.
Processing.
1.
Creameries;
2.
Laboratories;
3.
Blueprinting and photocopying;
4.
Laundries;
5.
Carpet and rug cleaning plants;
6.
Dry cleaning and dyeing plants.
N.
Fabrication.
1.
Fabrication from products made from finished rubber and plastics;
2.
Prefabricated houses;
3.
Auto trailer, camper, and mobile home manufacture.;
4.
Fabrication of metal for aluminum and steel culvert pipes.
O.
Wholesaling and Warehousing.
1.
Wholesaling and warehousing facilities, storage and distribution agencies.
P.
Office and Related Uses.
1.
Bookkeeping service;
2.
Catalogue store;
3.
Data processing;
4.
Employment agency;
5.
Import-export office and warehouse (wholesale only);
6.
Mail order;
7.
Office machine sales and service;
8.
Telephone answering;
9.
Building maintenance and janitorial services;
10.
Engineering offices;
11.
Office uses.
Q.
Other.
1.
Uses incidental and directly related to the services and operations of a permitted industrial use;
2.
Recreation facilities for employees;
3.
Hospital and medical clinic, industrial;
4.
Karate and gymnastic studios;
5.
Lumber;
6.
Mills, planing;
7.
Fiber glass manufacturing or processing;
8.
Furniture manufacture, upholstering and refinishing;
9.
Garages, parking or parking structures;
10.
Restaurants;
11.
Vocational schools and training centers, industrial, provided such uses exclude massage and card handling trades;
12.
Auto repair;
13.
Athletic supply;
14.
Photography studio;
15.
Studio (including, but not limited to, art, dance, gymnastics, martial arts, music, personal training, Pilates, yoga, and other similar instructional-based uses) with no more than four thousand five hundred square feet of total floor area;
16.
Gyms and fitness facilities with no more than four thousand five hundred square feet of total floor area;
17.
Children's gymnasium with no more than four thousand five hundred square feet of total floor area;
18.
Wholesaling of All-Terrain Vehicles, provided such uses do not include exterior displays of merchandise or test drives on site.
R.
Accessory massage permitted with the following primary businesses: athletic club and similar uses.
S.
Accessory motorcycle sales (new or used), provided such uses have no more than five motorcycles on site.
(Ord. 37 § 263.02, 1961; Ord. 298 § 1, 1971; Ord. 461 § 1, 1974; Ord. 489 § 4, 1975; Ord. 548 § 2, 1976; Ord. 709 §§ 1, 2, 1980; Ord. 716 § 1, 1980; Ord. 963 § 2 (A), (B), 1992; Ord. 1185 § 8, 2008; Ord. 1244 § 1, 2016; Ord. 1338, 6/23/2026)
§ 18.128.085 Minor conditional uses.
The following uses shall be permitted subject to a minor conditional use permit pursuant to Chapter 18.200:
A.
Animal hospitals;
B.
Aquamation;
C.
Gyms and fitness facilities between four thousand five hundred one square feet and ten thousand square feet;
D.
Studios (including, but not limited to, art, dance, gymnastics, martial arts, music, personal training, photography, Pilates, yoga, and other similar instructional-based uses) between four thousand five hundred one square feet and ten thousand square feet;
E.
Pet boarding, day care, veterinary care, and urgent care;
F.
Rock climbing.
(Ord. 1337, 6/23/2026)
§ 18.128.090 Conditional uses.
The following uses, in addition to those uses permitted in the I-P zone pursuant to a conditional use permit, may be permitted subject to a conditional use permit pursuant to Chapter 18.200:
A.
Animal shelters;
B.
Manufacturing plants manufacturing or processing chemicals;
C.
Automobile assembly, body and fender works, dismantling and used parts storage when operated wholly within a building;
D.
Truck repairing;
E.
Tire recapping, retreading and rebuilding;
F.
Outdoor uses incidental to and directly related to those permitted in Section 18.128.080;
G.
Utilities. Electric distribution and public utility substations, electric and public utility substations, public and private utility service yards;
H.
Concrete ready-mix plants;
I.
Contractor's equipment storage yards;
J.
Recreational vehicle storage lots;
K.
Greenhouses;
L.
Used automobile sales in conjunction with new automobile sales;
M.
Mini-storage uses;
N.
Caretaker facilities subject to the following provisions:
1.
The caretaker facilities shall be an accessory use to a primary or conditional use,
2.
The occupant(s) of the caretaker facilities shall derive their primary source of income from the operation on which their caretaker facilities are located;
O.
Churches, pursuant to the following provisions:
1.
The facility proposed for the church use shall be within three hundred feet of a residential zone,
2.
Parking shall be pursuant to the provisions of Chapter 18.156 and as follows:
a.
A parking plan shall be submitted for approval at the time of application for the allocation of shared parking,
b.
The parking plan may include provisions for shuttle, carpooling and similar alternative transportation in conjunction with automobile parking,
c.
The parking plan shall be use and time specific. Any alteration in the operational characteristics of the church shall require the reevaluation and approval of an updated parking plan,
3.
Signage pursuant to the provisions of Chapter 18.152 and as follows:
a.
A signage plan shall be submitted for approval at the time of application for the location and size of all signage. The allowable sign square footage shall be within the allotment pursuant to Section 18.152.210,
b.
A wall-mounted changeable copy sign may be incorporated into the total allowable square footage of the signage plan;
P.
Truck rentals;
Q.
Impound yards, when all storage area is located entirely within an enclosed building:
1.
When access to the property is directly from a street designated as a major arterial by the general plan,
2.
When the property is at least one and one-half acres in size, and
3.
When the property is located one hundred feet or more from residentially zoned property;
R.
Tasting rooms providing on-site alcoholic beverage tastings and the sale of alcoholic beverages for off-site consumption provided that the alcoholic beverage is produced on the premises. Tasting rooms may include other ancillary activities to the tastings such as food trucks and live entertainment, provided that all uses are secondary and incidental to the manufacturing component and that, prior to their commencement, a site plan approval by the planning division is obtained for any outdoor activities and a live entertainment permit from the license and permit hearing board is obtained for any live entertainment. Parking for such uses shall comply with the provisions of Chapter 18.156 or the business owner shall be required to demonstrate that the hours of the tasting room will not conflict with the other businesses on site to the satisfaction of the planning commission;
S.
Ambulance services.
(Ord. 37 § 263.04, 1961; Ord. 298 § 1, 1971; Ord. 327 § 1, 1971; Ord. 418 § 2, 1973; Ord. 476 § 1, 1974; Ord. 489 § 5, 1975; Ord. 663 § 1, 1979; Ord. 714 § 1, 1980; Ord. 959 § 1, 1991; Ord. 963 § 2 (C), (D), 1992; Ord. 1143 § 3, 2004; Ord. 1244 § 1, 2016; Ord. 1324, 6/10/2025; Ord. 1337, 6/23/2026; Ord. 1338, 6/23/2026)
§ 18.128.100 Industrial planned development.
If a conditional use permit is first obtained as provided in Chapter 18.200, property can be developed for industrial uses as a planned unit development or industrial condominium, and the property development standards set forth in this article may be waived or modified by the planning commission. Before the development standards may be waived or modified, the planning commission must find that the development which is proposed is consistent with the goals and objectives of the city's general plan and that the development which is proposed is enhanced over the development which would result if the development standards were not waived or modified. The planning commission may impose reasonable conditions on any development which is developed pursuant to the provisions of this section.
(Ord. 37 § 263.05, 1961; Ord. 641 § 1, 1978)
§ 18.128.110 Property development standards.
The following property development standards shall apply to all land and buildings in the M-1 zone:
A.
Lot Area. There shall be a minimum of ten thousand square feet in each lot.
B.
Lot Dimensions. All lots shall comply with the following minimum standards:
1.
Width. No provisions.
2.
Depth. Each lot shall have a minimum depth of one hundred feet.
C.
Maximum Building Coverage. No requirement.
D.
Building Types.
1.
All buildings constructed in the M-1 zone shall be of Type I, Type II, Type III or Type IV construction as defined in the building code.
2.
Existing residential structures may be used only when directly related and accessory to a permitted use on the same lot, subject to the following requirements:
a.
Any such structure shall be brought into compliance with current Uniform Building Code requirements for the particular occupancy (office, storage, caretaker's residence, etc.).
b.
The exterior features of such structures shall be modified in accordance with its proposed use, as approved by the review authority in accordance with Chapter 18.12 of this title.
3.
The planning commission shall consider the compatibility of metal buildings with surrounding structures and their impact on neighborhood character, property values, and future development.
4.
Caretaker units shall be constructed upon permanent foundations, and may utilize Type V construction, and otherwise comply with specific building types for the M-1 zone. Caretaker facilities shall be approved by the director of community development for architectural design and the planning commission, pursuant to Chapter 18.200, for compatibility with adjacent development and/or land uses pursuant to the provision off this title.
E.
Building Height.
1.
Buildings, as distinguished from masts, towers, chimneys and similar structures, shall conform to the height limits of the building code.
2.
Structures other than buildings, including chimneys, tanks, water and communications structures which are not accessory to buildings or appurtenant thereto, may be erected to heights no greater than forty-five feet above ground level unless a greater height is approved by conditional use permit.
F.
Yards.
1.
Front Yards. The minimum required depth of the front yard shall be fifteen feet, and the same shall be landscaped and maintained. Where the yard fronts on a major or secondary highway, the minimum required depth shall be twenty-five feet and shall be fully landscaped and maintained.
2.
Side Yards. The minimum required side yard shall be ten feet in depth where such side yard is adjacent to a street. Such yards shall be landscaped and maintained. No side yard is required for an interior lot.
3.
Rear Yards. There is no minimum required rear yard except that in the event the rear of the lot abuts upon a street, a rear yard meeting all of the minimum requirements for a front yard shall be provided.
4.
Buffer Yard. A buffer yard of not less than fifty feet in width shall be provided along any residential district boundary line, and thirty feet of such yard nearest the district boundary line shall be improved as a planting strip. The required landscaping shall be of specimen variety and shall include trees. The remaining twenty feet of such yard may be used for off-street parking. In the event a street or alley is situated between a residential and industrial district, no buffer yard shall be required.
G.
Walls. Where an industrial zone sides or rears upon any residential zone or an alley which abuts a residential zone, there shall be a solid masonry wall not less than six feet in height erected along and adjacent to the property line, except that such fence shall be reduced to not more than forty-two inches in height in any required yard abutting a street.
H.
Off-Street Parking. The provisions of Chapter 18.156 shall apply.
I.
Utilities. All utilities on the site shall be installed underground.
J.
Signs. The provisions of Chapter 18.152 shall apply.
K.
Landscaping. Landscaping where required by this article shall be installed and maintained as necessary to keep such landscaping alive, attractive and free of disease. Landscaping shall consist of trees, shrubs and ground cover in appropriate number and density, and a complete sprinkler system. Maintenance shall include, but shall not be limited to, necessary weeding, fertilizing and watering. Three copies of the complete landscaping plans prepared by a landscape architect shall be submitted to the planning director for approval.
L.
Mechanical Equipment. Air conditioning units, electrical switch gear and panels, compressors and similar mechanical and electrical equipment shall be completely screened within an enclosure compatible with the appearance of neighboring structures.
M.
Development Plan Approval. Before any building or structure is erected on any lot in this zone, a development plan shall have been submitted to and approved, pursuant to the provisions of Chapter 18.12.
N.
Outdoor Storage.
1.
Outdoor storage areas shall be oriented away from view from any public right-of-way. Storage that can be seen from a public right-of-way shall be screened by completely opaque materials in such a way that the materials within cannot be seen.
2.
Trees, shrubs and ground cover shall be provided in addition to other screening, and shall be sprinklered by an automatic system. Landscaping and sprinkler plans are to be approved by the planning division. Landscaping may totally replace other methods of screening if approved administratively by the planning division.
(Ord. 37 § 263.06, 1961; Ord. 298 § 1, 1971; Ord. 430 § 1, 1973; Ord. 489 § 6, 1975; Ord. 516 § 1, 1975; Ord. 803 § 1, 1983; Ord. 959 §§ 1, 2, 1991; Ord. 1324, 6/10/2025)
§ 18.128.120 Performance standards.
All uses established or placed into operation after the effective date of this article shall comply at all times hereafter with the following limitations or performance standards.
A.
Fire and Explosion Hazards. All activities involving inflammable or explosive materials, and all storage of such materials, shall be provided with adequate safety devices against the hazard of fire and explosion. Adequate firefighting and fire suppression equipment and devices standard in industry shall be provided. All incineration is prohibited except as provided by the air pollution control district of the county.
B.
Radioactivity and Electrical Disturbance. Devices which radiate radio-frequency energy shall be so operated as not to cause interference with any activity carried on beyond the boundary line of the property upon which the device is located. "Radio-frequency energy" is defined as electromagnetic energy at any frequency in the radio spectrum between ten kilocycles and three million megacycles.
C.
Sound. Sound related to industrial or manufacturing processes, excluding traffic noise, shall be muffled so as not to become objectionable due to intermittence, beat frequency or shrillness. Sound pressure levels above those shown in the following table, when measured at the boundary line of the property on which the sound is generated shall be considered objectionable:
Octave-Band Range in Cycles per Second | Sound Pressure Level in Decibels 0.0002 dynes/cm2 |
|---|---|
Below 75 | 72 |
75—150 | 67 |
151—300 | 59 |
301—600 | 52 |
601—1200 | 46 |
1201—2400 | 40 |
2401—4800 | 34 |
Above 4800 | 32 |
If the noise is not smooth and continuous or is not present between the hours of ten p.m. and seven a.m., one or more of the following corrections shall be applied to the above octave-band levels:
Corrections in Decibels | |
|---|---|
Daytime operation only | +5 |
Noise source operates less than 20% of any one-hour period | +5 |
Noise source operates less than 5% of any one-hour period | +10 |
Noise of impulsive character, such as hammering | -5 |
Noise of periodic nature, such as humming or screeching | -5 |
The sound pressure level shall be measured with a sound level meter and associated octave band analyzer conforming to standards prescribed in publications by the American Standards Association.
D.
Vibration. Every use shall be so operated that the ground vibration inherently and recurrently generated is not perceptible, without instruments, at any point on any boundary line of the lot on which the use is located.
E.
Smoke, Dust, Fumes and Contaminants. Industrial or manufacturing processes out of which evolve smoke, dust, fumes, particulate matter, contaminants and specific contaminants, shall comply with the latest rules and regulations of the air pollution control district of the county.
F.
Odors. Odors shall not be in such quantities as to be offensive beyond the boundary line of the parcel from which the odors emanate.
G.
Toxic Gases. Toxic gases or other toxic matter shall not be emitted which can cause damage to health, to animals or vegetation, or other forms of property, or which can cause any soiling beyond the boundary line of the parcel on which the use is located.
H.
Emission of Heat and Glare. Every use shall be so operated that it does not emit heat or glare in such quantity or degree as to be readily detectable on any boundary line of the property on which the use is located.
I.
Outdoor Storage and Waste Disposal. All outdoor storage facilities for waste materials and trash shall be enclosed by a solid masonry wall adequate to conceal such facilities from adjacent properties. No material or waste shall be deposited upon a subject lot in such form or manner that they may be transported from the lot by acts of nature.
(Ord. 37 § 263.08, 1961; Ord. 298 § 1, 1971)
