Illinois Urban Manual

Urban Stormwater Wetlands

800

Constructed wetland to improve stormwater quality

3

3

3

3

3

3

3

3

3

Construction Road Stabilization

806

Stabilize temporary roads to reduce erosion

3

2

2

3

Culvert Inlet Protection

808

Temporary sediment filter at culvert inlets

2

Diversion

815

Channel and ridge constructed to collect and divert runoff

2

2

1

1

1

1

1

1

Diversion Dike

820

Perimeter dike to manage and divert runoff

2

2

1

1

1

1

1

1

Dust Control

825

Controlling dust on construction sites and roads

1

1

3

1

Erosion Blanket

830

Preformed organic or inorganic erosion mat

2

1

1

1

1

2

1

Filter Strip

835

Vegetated filter zone to remove pollutants

2

1

1

1

2

Grass-Lined Channels

840

Natural or constructed channel vegetated to convey water

2

2

1

1

1

1

1

Impoundment Structure-Full Flow

841

Structure for collecting and storing water, debris, or sediment

3

3

2

2

2

2

2

2

Impoundment Structure-Routed

842

Structure for collecting and storing water, debris, or sediment

3

3

3

3

3

3

3

3

Infiltration Trench

847

Pits or trenches designed to hold water to increase infiltration

1

1

1

1

1

1

Inlet Protection-Block and Gravel

850

Temporary sediment control barrier at storm drain inlet

1

1

1

Inlet Protection-Excavated Drain

855

Excavated area to trap sediment at storm drain inlet

1

1

1

Inlet Protection-Fabric Drop

860

Temporary practice to control sediment at storm drain inlet

1

1

1

Inlet Protection-Gravel & Wire Mesh

861

Temporary sediment control barrier at storm drain inlet

1

1

1

Inlet Protection-Sod Filter

862

Sediment filter using sod around a storm drain drop inlet

1

1

1

Inlet Protection-Straw Bale Barrier

863

Temporary practice to control sediment at storm drain inlet

1

1

1

Land Grading

865

Smoothing surface to planned grade to improve site

2

2

1

1

1

1

2

Level Spreader

870

Structure to spread water flow uniformly

1

1

1

1

1

1

Mulching

875

Placing materials to protect soil surface

2

2

1

1

2

2

2

2

Permanent Vegetation

880

Establishing permanent vegetative cover

3

3

2

2

2

2

3

3

3

3

1

Permeable Pavement

890

Pavement having interspersed sod, gravel, or sand areas

1

1

1

1

1

1

Portable Sediment Tank

895

Container for trapping sediment from runoff water

1

1

2

Right-of-way Diversion

900

Structure to control roadway erosion

1

1

1

2

Rock Check Dam

905

Structure to control erosion in ditch or grass swale

3

2

Rock Outlet Protection

910

Rocked area at outlets to reduce flow erosion

2

2

1

Silt Fence

920

Temporary sediment barrier of filter fabric

2

2

1

1

2

Sodding

925

Laying blanket of established turf to protect area

3

3

2

1

2

2

3

3

3

3

1

Stabilized Construction Entrance

930

Rock pad at entrance or exit to control tracking of mud to streets

1

3

Straw Bale Barrier

935

Bale barrier to trap sediment from runoff

2

2

1

1

2

Structural Streambank Stabilization

940

Structure to control streambank erosion

3

2

Subsurface Drain

945

An underground water collection and transport tube

1

1

2

2

1

2

1

1

1

2

3

Sump Pit

950

Temporary pit to trap and filter water

2

2

2

Surface Roughening

953

Grooving, stair stepping, or tracking across a slope

1

1

1

1

Temporary Diversion

955

Temporary diversion for runoff control

2

2

1

1

1

1

1

1

Temporary Sediment Trap

960

Temporary ponding basin to trap sediment

1

1

1

1

2

Temporary Seeding

965

Planting vegetation to protect areas from erosion

3

2

2

2

2

2

2

2

2

2

Temporary Slope Drain

970

Short term water conveyance down a sloping area

2

1

1

1

1

Temporary Stream Crossing

975

Short term stream crossing for equipment

1

1

2

Temporary Swale

980

Temporary excavated drainageway to control runoff

1

1

1

1

1

1

Topsoiling

981

Adding or replacing quality soil to the surface

2

1

2

1

1

1

1

1

Tree/Forest Ecosystem Preservation

984

Protecting contiguous stands of trees from construction damage

2

2

2

2

1

3

3

1

2

1

Tree and Shrub Planting

985

Planting trees and shrubs

3

3

3

2

1

2

3

3

3

3

2

Tree Protection

990

Protecting individual trees from construction damage

1

1

1

1

1

1

1

1

1

1

Tree Protection-Augering

991

Protecting individual trees from underground construction damage

1

1

1

1

1

1

1

1

1

1

Vegetative Streambank Stabilization

995

Vegetation to control streambank erosion

3

1

1

1

Well Decommissioning

996

Permanent sealing of a water well, boring, or monitoring well

3

3

3

1 = Slight Impact
2 = Moderate Impact
3 = Significant Impact

October 2001

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