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Environmental Rules

Tacoma's Environmental Rules: The Rules That Matter

By CityRuleLookup Editorial Team

Every city handles environmental rules a little differently. In Tacoma, Washington, there are 5 distinct rules that residents and property owners should be aware of. Some are stricter than what neighboring cities enforce, and others are more relaxed. Here is what you need to know.

Flood Zones

Tacoma requires a recorded Notice on Title for any property with land in the 100-year floodplain or Riparian Buffer zone, and City review before any development in a flood hazard area, even projects that skip a building permit.

Key details: Governing chapter: TMC Ch. 13.11 Critical Areas Preservation. Trigger: Land in 100-year floodplain or Riparian Buffer. Required filing: Notice on Title under § 13.11.280. Enforcing dept: Planning and Development Services. State mandate: Growth Management Act requires critical area protection.

Developing in a mapped flood hazard area without City review and approval, or without recording the required Notice on Title, can halt work and trigger code enforcement action under TMC Chapter 1.82.

Flood Elevation Requirements

Tacoma requires new critical facilities built in the mapped 100-year floodplain to elevate their lowest floor at least three feet above base flood elevation, or to the 500-year flood height, whichever is higher.

Key details: Governing section: TMC § 13.11.620.D. Minimum freeboard: 3 feet above base flood elevation. Alternative standard: 500-year flood height, if higher. Applies to: New critical facilities only. State framework: Growth Management Act flood-hazard mandate.

Building a critical facility's lowest floor below the required elevation, or failing to protect access routes to that height, is a Critical Areas Preservation violation enforced under TMC Chapter 1.82.

Erosion Control

Tacoma requires a Construction SWPPP for projects adding 2,000 square feet of impervious surface or disturbing 7,000 square feet of land, plus a certified erosion-control lead above 500 cubic yards of grading.

Key details: Governing section: TMC § 2.19.060.B. SWPPP trigger: 2,000 sf impervious or 7,000 sf disturbed. ESC lead required: Grading over 500 cubic yards. Enforced by: TMC Chapter 1.82 Uniform Enforcement Code.

Grading and erosion-control violations fall under TMC Chapter 2.19's enforcement, administered per TMC Chapter 1.82 Uniform Enforcement Code and TMC § 2.02.130; final grading approval is withheld until all erosion control measures and required reports are complete.

Stormwater Management

Tacoma requires everyone discharging stormwater or pollutants into the municipal stormwater system or receiving waters to comply with TMC Chapter 12.08D, the City's NPDES municipal stormwater permit, and its Stormwater Management Program.

Key details: Governing chapter: TMC Chapter 12.08D, adopted 2021. Applies to: All persons discharging stormwater or pollutants. Max penalty: $10,000 per violation per day. State framework: Growth Management Act and RCW 90.48 AKART.

Chapter 12.08D violations carry monetary penalties up to $10,000 per violation per day or portion of a day it continues, assessed per the Stormwater Compliance Policy; enforcement runs through TMC Chapter 1.82, with appeals of Control Authority decisions going to the Hearing Examiner.

Boat Dock Permits

Any pier, wharf, dock or marina built in Tacoma falls under the city's Waterfront Structures and Marina Code, which layers fire-protection and construction standards on top of the Building Code and Shoreline Management Act.

Key details: Scope: Governs piers, docks, floats, marinas. Cross-reference: Requires Building Code and Fire Code compliance. Fire walls: Required at least every 450 feet. Additional layer: Also triggers Shoreline Management Act permitting.

Waterfront structures that don't meet the chapter's construction, fire-wall or sprinkler standards can be denied a permit, red-tagged, or ordered corrected by the Building Official before use is allowed.

The Bottom Line

Tacoma's environmental rules rules are a mixed bag. Some areas are strict, others are relaxed, and the details matter. The best approach is to check the specific rule that applies to your situation rather than assuming Tacoma is broadly strict or permissive.

This guide is based on Tacoma's current municipal code. Local rules can and do change, so check the individual ordinance pages for the latest details, penalties, and FAQs.