Urbana_Class_1_Erosion_Control_Permit_Manual_of_Practice.pdf

CITY OF URBANA

CLASS 1

EROSION CONTROL

PERMIT

MANUAL OF PRACTICE

Revised December 2024 i

CLASS 1 EROSION CONTROL PERMIT

TABLE OF CONTENTS

Introduction

Erosion Control Practices Flow Chart

Typical Erosion Control Plan Elements

Sample Erosion Control Inspection Form

Stabilized Construction Entrance Details

Perimeter Control Details

Silt Fence

Grass Buffer Strip

Super Silt Fence

Inlet Protection Details

Welded Wire Inlet Basket

Inlet Filter Bag

Concentrated Flow Control Details

Rock Check Dam

Triangular Silt Dike

Geo-Ridge® Berms

Turf Reinforcement Mat ii

CLASS 1 EROSION CONTROL PERMIT

TABLE OF CONTENTS (continued)

Concentrated Flow Control Details (continued)

Erosion Control Blanket

Sodding

Pump Discharge Filter Bag Details

Concrete Washout Facility Details

Notes

Introduction:

History: For many years, urban storm water runoff has been a source of great concern because of its potential to carry harmful pollutants into nearby watercourses.

Some pollutants in urban storm water can damage lakes and streams, harm aquatic life and disrupt sensitive wetland habitats. As a result of these concerns, the 1987 amendments to the Clean Water Act required the United States Environmental

Protection Agency (U.S. EPA) to address storm water runoff in two phases.

• Phase I of the National Pollution Discharge Elimination Systems (NPDES)

Storm Water Program began in 1990. Phase I of the NPDES Storm Water Program applies to large and medium municipal separate storm sewer systems (MS4s) and eleven industrial categories including construction sites disturbing five or more acres of land.

• Phase II of the NPDES Storm Water Program began March 10, 2003 and applies to small MS4s and construction sites disturbing between 1 acre and five acres of land.

The Illinois Environmental Protection Agency (Illinois EPA) is in charge of implementing both phases of the NPDES Storm Water Program.

Since Urbana is defined as a small MS4, the City is required to comply with Phase II of the NPDES Storm Water Program and they now hold a Phase II Permit that covers stormwater discharge from sewers under City jurisdiction. Among other things, this permit requires the City to control construction site runoff.

City of Urbana Requirements: The City of Urbana (CITY) requires a Class 1 Erosion

Control permit for all construction projects that result in more than 1 acre (43,560 sq-ft) of land disturbance. Land disturbance area is defined by CITY ordinance as: any land change that may result in soil erosion from wind, water and/or ice and the movement of sediments into or upon water, lands or rights-of-way within the CITY, including but not limited to building demolition, clearing and grubbing, grading, excavating, transporting and filling of land.

Class I Erosion Control permits are issued and inspected by the City of Urbana

Engineering Division located in the Public Works Department at 706 South Glover

Avenue in Urbana. For more information, consult the CITY website:

https://www.urbanail.gov/public-works/page/erosion-control

Illinois EPA Requirements: Phase II of the NPDES Storm Water program requires construction sites disturbing 1 or more acres of land to obtain an ILR-10 Permit. This requirement is in addition to the Class 1 Erosion Control Permit required by Urbana city ordinance. Sample forms required for the ILR-10 process include the ILR-10

Notice of Intent (NOI), the ILR-10 Incidence of Non Compliance (ION), the ILR-10

Notice of Termination (NOT) and the Storm Water Pollution Prevention Plan (SWPPP).

More information about these forms and Illinois EPA requirements for construction sites exceeding 1 acre of disturbed land can be found at the following website:

http://www.epa.illinois.gov/topics/forms/water-permits/storm-water/construction/index

Urbana Erosion Control Details: Details for approved erosion and sediment control best management practices (BMPs) are included in this manual. Other BMPs may be acceptable, but must be reviewed and approved by the City of Urbana Engineering

Division prior to their use.

Inspections: Once an erosion control permit is issued, the CITY will make periodic inspections to ensure that all required erosion control measures are in place and remain effective. The CITY inspector will confirm that all construction related dirt and debris stays on site, out of CITY storm sewers and off of CITY sidewalks and roadways. A sample inspection form is included on page 8 of this manual.

Erosion Control Practices Flow Chart

Typical Erosion Control Plan Elements

Sample Erosion Control Inspection Form Page 1

Sample Erosion Control Inspection Form Page 2

Stabilized Construction Entrance Details: Fabric and Rock Page 1

Stabilized Construction Entrance Details: Fabric and Rock Page 2

Perimeter Control Details: Silt Fence

Perimeter Control Details: Grass Buffer Strip

Perimeter Control Details: Super Silt Fence

Inlet Protection Details: Welded Wire Inlet Basket

Inlet Protection Details: Inlet Filter Bag

Concentrated Flow Control Details: Rock Check Dam

Concentrated Flow Control Details: Triangular Silt Dike

Concentrated Flow Control Details: Geo-Ridge® Berms

Concentrated Flow Control Details: Turf Reinforcement Mat Page 1

Concentrated Flow Control Details: Turf Reinforcement Mat Page 2

Concentrated Flow Control Details: Erosion Control Blanket Page 1

Concentrated Flow Control Details: Erosion Control Blanket Page 2

Concentrated Flow Control Details: Sodding

Pump Discharge Filter Bag Details

Concrete Washout Facility Details Page 1

Concrete Washout Facility Details Page 2

NOTES: