Article 40.20 — INDUSTRIAL (I) DISTRICT

§ 40.20.010. Purpose. ¶

The purpose of an industrial (I) district is to encourage sound industrial development by providing and protecting an environment exclusively for such development, subject to regulations necessary to insure the purity of air and waters in the city, county and region, and the protection of nearby residential, commercial, agricultural, public and industrial uses of land from hazards and noise and other disturbances.

(Ord. 296 § 20.1)

§ 40.20.020. Permitted uses. ¶

The principal permitted uses of land in an I district are as follows:

(a) Any manufacturing, processing, assembling, research and development, laboratory, wholesale or storage uses that complies with performance standards of Article 40.24.
(b) Railroad yards and freight stations, and trucking and motor freight stations, and public utility substations and service yards.
(c) Agriculture, except the raising of animals or fowl for commercial purposes, or the sale of any products at retail on the premises.
(d) Sex oriented entertainment businesses, subject to the requirements of Section 40.26.410 .
(e) Emergency shelter with thirty-five or fewer beds, subject to performance standards in Section 40.24.120 .
(Ord. 296 § 20.2; Ord. 1377 § 5; Ord. 1735 § 3; Ord. 2413 § 2, 2013; Ord. 2572 § 17, 2020)

§ 40.20.030. Accessory uses. ¶

The following accessory uses are permitted in an I district:

(a) Signs appurtenant to any permitted use, subject to the provisions of Section 40.26.020 .
(b) Incidental services, such as restaurants to serve employees, when conducted and entered from within the building.
(c) Other accessory uses and buildings customarily appurtenant to a permitted use. (Ord. 296 § 20.3)

§ 40.20.040. Conditional uses. ¶

The following conditional uses may be permitted in an I district:

(a) Any of the following manufacturing uses, among others, subject to review in accordance with the performance standards procedure in Sections 40.24.010 through 40.24.080 , but not including uses of the character listed in subsection (g) of this section.
(b) Automobile and metal appliance manufacturing and assembly, structural steel fabricating shops, machine shops, forges and foundries.
(c) Brewing or distilling of liquors, or perfume manufacture.
(d) Poultry slaughterhouses, and meat packing, but not other stockyards or slaughterhouses.
(e) Sugar refinery.
(f) Brick pottery manufacturing, stone or monument works.
(g) Public and semipublic uses necessary to serve and appropriate in the I district.
(h) Retail commercial uses, such as restaurants and automobile service stations, necessary to serve and appropriate to the I district.
(i) Drive-through facilities, subject to the provisions of Section 40.26.420 .
(j) Emergency shelter with more than thirty-five beds, subject to the performance standards in Section 40.24.120 .
(k) Any of the following manufacturing uses, involving primary production of the following products from raw materials, subject to review in accordance with the performance standards procedure, and provided that such uses are located not less than two thousand feet from the nearest R district or A district designated for future residential development in the city master plan.
- (1) Asphalt, cement, charcoal and fuel briquettes.
- (2) Aniline dyes, ammonia, carbide, caustic soda, cellulose, chlorine, carbon black and bone black, creosote, hydrogen and oxygen, industrial alcohol, nitrates of an explosive nature, potash, plastic materials and synthetic resins, pyroxylin, rayon yard, and hydrochloric, nitric, phosphoric, picric and sulphuric acids.
- (3) Coal, coke and tar products, explosives, fertilizers, gelatin, animal glue and size.
- (4) Turpentine, matches, paint.
- (5) Rubber, soaps, including fat rendering.
- (6) Flour mill.
- (7) The following processes: nitrating of cotton or other materials; magnesium foundry, reduction, refining, smelting and alloying of metal or metal ores; refining petroleum products, such as gasoline, kerosene, naphtha, lubrication oil, distillation of wood or bones, storage, curing or tanning of raw, green or salted hides or skins.
- (8) Stock yards, slaughterhouses, except for poultry; slag piles.
- (9) Large scale bleaching, cleaning and dyeing establishments. (10) Storage of fireworks or explosives, except where incidental to a permitted use.
(l) Automobile salvage and wrecking operations, and industrial metal and waste rag, glass, paper salvage operations, subject to review in accordance with the performance standards procedure in Sections 40.24.010 through 40.24.080 , if located not less than five hundred feet from the nearest R district or A district designated for future residential development in the city master plan, and provided that all operations are conducted within a solid wall or tight board fence not less than eight feet high.
(m) Any other use which is determined by the planning commission to be of the same general character as the above uses.

(Ord. 296 § 20.4; Ord. 1377 § 6; Ord. 1739 § 9, 1994; Ord. 2113 § 1, 2003; Ord. 2359 § 6, 2010; Ord. 2413 § 3, 2013; Ord. 2572 § 17, 2020)

§ 40.20.050. Height regulations. ¶

There are no height limitations in an I district, except that within two hundred feet of any R district or A district designated for future residential development in the city master plan, no structure shall exceed three stories or fifty feet in height; provided further, that before the construction of such a structure which exceeds fifty feet is authorized, the planning commission shall make a finding that

any such excess height will not be detrimental to the light, air or privacy of any other structure or use currently existing or anticipated. (Ord. 296 § 20.5)

§ 40.20.060. Area and yard requirements. ¶

The following minimum area and yard measurements for the I zoning district classification as designated on the zoning map, except where increased for conditional uses or as provided in Sections 40.27.040 to 40.27.070 :

(a) Lot area. Twenty thousand square feet.
(b) Front yard. Twenty-five feet.
(c) Side yards. Twenty feet, except when abutting on an R district or an A district designated for future residential development in the city master plan, then not less than fifty feet.
(d) Rear yard. Twenty-five feet, except when abutting an R district or an A district designated for future residential development in the city master plan, then not less than fifty feet.
(Ord. 296 § 20.6; Ord. 526 § 1)

§ 40.20.070. Special conditions. ¶

(a) All uses shall be subject to initial and continued compliance with the performance standards in Sections 40.24.010 through 40.24.080 .
(b) Site plan and architectural approval by the director or designee shall be required for all uses.
(c) In any I district directly across the street from any R district or A district designated for future residential use in the city master plan, the parking and loading facilities shall be distant at least twenty feet from such street, and the buildings and structures at least fifty feet from such street.

(d) Landscaping and screening shall be in accordance with the provisions of Section 40.26.250 . (Ord. 296 § 20.7; Ord. 526 § 1; Ord. 894 § 2; Ord. 920 § 2; Ord. 1627 § 32; Ord. 2390 § 2, 2012; Ord. 2677, 11/4/2025)