Erosion Control: Cambridge vs Somerville
How do erosion control rules compare between Cambridge, MA and Somerville, MA?
Cambridge and Somerville have similar restriction levels.
Cambridge, MA
Middlesex County
Cambridge construction sites must install erosion and sediment controls under the Stormwater Ordinance and state Wetlands Protection Act, with silt fencing, inlet protection, and stabilized entrances required.
View full Cambridge rules →Somerville, MA
Middlesex County
Construction sites in Somerville must install silt fence, stabilized entrances, and inlet protection before earthwork. Violations are $300 per day.
View full Somerville rules →Key Facts Comparison
| Fact | Cambridge | Somerville |
|---|---|---|
| Trigger | 1 acre disturbance | - |
| BMPs | Silt fence, inlet protection | - |
| Stabilization | Within 14 days | 14 days for inactive areas |
| Wetlands law | MGL c.131 s.40 | - |
| Non-compliance | Stop-work order | - |
| Design guide | - | MA Stormwater Handbook |
| Required BMPs | - | Silt fence, stabilized entry, inlet protection |
| Wetland jurisdiction | - | 100 feet Conservation |
| Fine | - | $300 per day typical |
Highlighted rows indicate differences between cities.
Cambridge FAQ
What BMPs are required for a Cambridge construction site?
Silt fencing, inlet protection, stabilized entrances, and prompt stabilization of exposed soils at minimum.
Does the Conservation Commission review projects?
Yes, projects within 100 feet of wetlands or 200 feet of the Charles require filing under the Wetlands Protection Act.
Somerville FAQ
Do I need erosion controls for a small home addition?
Yes if you are disturbing soil. At minimum install silt fence around stockpiles and protect nearby catch basins. Permit conditions will specify.
Who inspects erosion controls?
DPW Engineering inspects larger projects; ISD building inspectors flag BMP failures on smaller permits. Complaints can be filed via Somerville 311.
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