A. 
This district implements the Heavy Industrial (HI) Comprehensive Plan designation. It is intended to provide areas characterized by heavy or bulk manufacturing uses and distributive and light manufacturing uses, with supportive commercial and office uses. The development standards are the minimum necessary to assure safe, functional, efficient, and environmentally sound development.
(Ord. 2741 § 4 (part), 2024; Ord. 2765 § 49, 2025)
A. 
No on-site hazardous substance processing and handling, or hazardous waste treatment and storage facilities shall be permitted, unless clearly incidental and secondary to a permitted use. On-site hazardous waste treatment and storage facilities shall be subject to the State siting criteria (RCW 70.105). (See TMC Chapter 21.08.)
(Ord. 2741 § 4 (part), 2024; Ord. 2765 § 50, 2025)
A. 
Design review is required for:
1. 
All projects located within the shoreline jurisdiction that involve new building construction or exterior changes if the cost of the exterior changes equals or exceeds 10% of the building’s assessed valuation.
2. 
New developments within 300 feet of residential developments.
3. 
New developments that are outside the shoreline jurisdiction and over 45 feet in height.
(See TMC Chapter 18.60, Design Review)
(Ord. 2741 § 4 (part), 2024; Ord. 2765 § 51, 2025)
A. 
Development within the Heavy Industrial District shall conform to the following listed and referenced standards:
HI BASIC DEVELOPMENT STANDARDS
Setbacks to yards, minimum
Front
25 feet
Second front
12.5 feet
Sides
5 feet
Sides, if any portion of the yard is within 50 feet of CR, HDR
1st Floor
10 feet
2nd Floor
20 feet
3rd Floor
30 feet
Rear
5 feet
Rear, if any portion of the yard is within 50 feet of CR, HDR
1st Floor
10 feet
2nd Floor
20 feet
3rd Floor
30 feet
Refer to TMC Ch. 18.52, “Landscape Requirements,” Table A, for perimeter and parking lot landscaping requirements.
Height, maximum
115 feet
Off-street parking
See TMC Ch. 18.56, Off-street Parking & Loading Regulations & Figure 18-7
(Ord. 2741 § 4 (part), 2024; Ord. 2765 § 52, 2025)