Erosion Control: Mililani Mauka vs Urban Honolulu
How do erosion control rules compare between Mililani Mauka, HI and Urban Honolulu, HI?
Mililani Mauka and Urban Honolulu have similar restriction levels.
Mililani Mauka, HI
Honolulu County
ROH Sec. 18A-1.6 requires approved erosion and sediment control plans for Mililani Mauka land-disturbing activities that need building, grading, stockpiling, or trenching permits.
View full Mililani Mauka rules →Urban Honolulu, HI
Honolulu County
Urban Honolulu tower and infill projects in Kakaako, Ala Moana, and Waikiki must submit erosion and sediment control plans under ROH Sec. 18A-1.6, protecting tight streets and storm drains that discharge directly to sensitive coastal waters.
View full Urban Honolulu rules →Key Facts Comparison
| Fact | Mililani Mauka | Urban Honolulu |
|---|---|---|
| - | - | |
| Authority | - | ROH Sec. 18A-1.6 |
| Urban focus | - | Kakaako, Ala Moana, Waikiki |
| Typical BMPs | - | Inlet protection, track-out |
| Reviewer | - | DPP |
| Compounding rule | - | MS4 Chapter 43 |
Highlighted rows indicate differences between cities.
Mililani Mauka FAQ
Do I need a plan to cut into my Mililani Mauka hillside for a pool?
Yes. Hillside excavation typically requires a grading permit and an erosion and sediment control plan under Sec. 18A-1.6 given slope and runoff concerns.
How long must controls stay in place?
Temporary controls must remain and function until the site is permanently stabilized with vegetation or other approved measures in the plan.
Urban Honolulu FAQ
Do small Urban Honolulu remodels need erosion control plans?
If the remodel requires a building, grading, stockpiling, or trenching permit, Sec. 18A-1.6 requires an approved plan before disturbance, regardless of project size.
What BMPs does DPP expect for Urban Honolulu sites?
Typically inlet protection on all adjacent catch basins, perimeter silt fabric, stabilized exits to prevent track-out, and covered stockpiles to reduce tradewind-driven erosion.
Compare other topics
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