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Sediment runoff from construction sites can be significant and can impair streams, lakes and rivers, by causing stream bed scouring and habitat degradation, shoreline erosion and stream bank widening, loss of fish population, and increased frequency of downstream flooding.

In addition, sediment often carries with it high loadings of metals, nutrients (such as phosphorus and nitrogen), and other pollutants which adversely affect the quality of downstream water bodies.

Certain permits and erosion control/pollution prevention practices are required. Follow the flow chart below to determine the city's requirements for construction sites, and click as applicable:

Is the site in question a commercial or residential subdivision (or a lot within a commercial or residential subdivision)?

If yes, the site is in the city limits,  click here for requirements.

If no, the site is not in the city limits,  click here for further instructions.

Convention Center site prior to erosion controls.

Convention Center after erosion controls:

hay sprayed to establish ground cover,
silt fences to catch sediment,
hay bales for catch basin protection.