The following are permitted in the M-1 zone provided there is no appreciable offensive or objectionable odor, dust, noise, bright lighting, vibration or other nuisance factor, and further provided that the use is conducted within a building, or, where the activity is outside, it is wholly surrounded by a solid masonry wall:
A. Building materials;
B. Cabinet shop;
C. Contractor’s yard;
D. Food processing;
E. Machine shop;
F. Outdoor storage and sales;
G. Public utility service yard;
H. Warehousing or mini-storage;
I. Light manufacturing, fabrication, assembly, component manufacturing, small parts processing. (Ord. 916 § 2, 2007: Ord. 362 (part): Ord. 336 § 6.23.000, 1977).

The following uses are permitted in the M-1 zone subject to the issuance of a conditional use permit:
A. Retail sales and personal service establishments appurtenant to permitted uses;
B. Any use specified in Section 17.52.010 which in the opinion of the community development director does not qualify as a permitted use because of the potential for objectionable odor, dust, noise, bright lighting, vibration or other nuisance factors;
C. Industrial cluster complex;
D. Auto body and paint shop;
E. Automobile repair shop (light);
F. Automobile repair shop (heavy);
G. Mobile pushcart vending facility;
H. Automotive dealership;
I. Car wash;
J. Automotive rentals.
(Ord. 916 § 3, 2007: Ord. 674 § 8, 1993; Ord. 669 § 3, 1992; Ord. 650 § 10, 1991: Ord. 581 § 32, 1988; Ord. 391: Ord. 336 § 6.23.010, 1977).

The following uses are prohibited in the M-1 zone:
A. Places of assembly (lodges, clubs, religious facilities, community centers, theaters, etc.);
B. Sex-oriented businesses as defined and regulated in Chapter 17.79 of the Rocklin Municipal Code. (Ord. 916 § 4, 2007).

Height regulations in the M-1 zone:
The maximum height for principal buildings and structures shall be thirty feet, and the maximum number of stories shall be two, with the following exception:
With a use permit the maximum allowable height may be increased up to fifty feet, and the maximum number of stories may be increased up to four. (Ord. 555 § 7, 1986: Ord. 336 § 6.23.020, 1977).

The minimum area for each lot in the M-1 zone shall be twenty thousand square feet. (Ord. 336 § 6.23.030, 1977).

The maximum lot coverage by all structures and buildings in the M-1 zone shall not exceed fifty percent of the lot area. (Ord. 543 § 1, 1986: Ord. 336 § 6.23.040, 1977).

The minimum lot width in the M-1 zone shall be two hundred feet. (Ord. 336 § 6.23.050, 1977).

No building or structure shall hereafter be erected or enlarged in the M-1 zone unless the following setbacks are provided and maintained:
A. Front. There shall be a front setback of not less than twenty-five feet.
B. Rear. There shall be a rear setback of not less than ten feet.
C. Interior Side. There shall be an interior side setback of not less than ten feet.
D. Street Side. There shall be a street side setback of not less than ten feet.
E. Specified Streets. Front, side, street side, or rear setbacks required for lots abutting a highway or street for which rights-of-way are established by the circulation element of the general plan shall be measured from the adopted plan line or the property line, whichever provides the greater setback.
F. Parking lots and vehicle display areas shall be set back a minimum of fifteen feet from all public rights-of-way and five feet from interior property lines. (Ord. 916 § 5, 2007: Ord. 336 § 6.23.060, 1977).

Off-street parking in the M-1 zone shall be provided subject to the regulations in Chapter 17.66. (Ord. 916 § 6, 2007: Ord. 336 § 6.23.070, 1977).