Grand Ridge Wind Farm Project Phase I, Phase II and III Storm

Grand Ridge Wind Farm ProjectPhase I, Phase II and III

Storm Water Pollution Prevention Planfor

Construction Activities

Prepared forGrand Ridge Energy LLC

Grand Ridge Energy II, LLCGrand Ridge Energy III, LLC

Prepared by

HDR Engineering, Inc.701 Xenia Avenue South, Suite 600

Minneapolis, MN 55416

September 2007 (Revised August 2008, October 2008)

Grand Ridge Wind Farm Project (Phase I, II, and III)

Storm Water Pollution Prevention Plan i October 2008

Table of Contents

1.0 CERTIFICATION STATEMENT.................................................................................. 1

2.0 NPDES REQUIREMENTS ............................................................................................. 2

3.0 PROJECT DESCRIPTION ............................................................................................. 3

4.0 POTENTIAL FOR STORM WATER POLLUTION................................................... 64.1. Land Use .................................................................................................................... 64.2. Soils............................................................................................................................. 64.3. Precipitation .............................................................................................................. 7

5.0 CONSTRUCTION ACTIVITIES ................................................................................. 105.1. Access Road ............................................................................................................. 105.2. Wind Turbine Foundations.................................................................................... 105.3. Trenching of Underground Electrical and Communication Cables .................. 115.4. Construction of Facilities – Operation and Maintenance Facility ..................... 115.5. Construction of Facilities – Substation ................................................................. 115.6. Dewatering (if needed)............................................................................................ 11

6.0 TEMPORARY EROSION AND SEDIMENT CONTROL BMPS............................ 126.1. Control of Surface Water....................................................................................... 136.2. Culvert Protection................................................................................................... 136.3. Ditch Protection ...................................................................................................... 136.4. Mulch ....................................................................................................................... 136.5. Preserve Existing Vegetation ................................................................................. 146.6. Sediment Traps ....................................................................................................... 146.7. Silt Fence.................................................................................................................. 146.8. Slope Protection ...................................................................................................... 146.9. Street Cleaning ........................................................................................................ 156.10. Temporary Construction Entrances/Exits ........................................................... 156.11. Temporary Seeding................................................................................................. 156.12. Topsoil Segregation and Stockpile Protection Area ............................................ 16

7.0 PERMANENT EROSION AND SEDIMENT CONTROL BMPS............................ 187.1. Riprap ...................................................................................................................... 197.2. Turf Establishment ................................................................................................. 19

8.0 INSPECTION AND MAINTENANCE ........................................................................ 238.1. Inspection................................................................................................................. 238.2. Maintenance ............................................................................................................ 23

9.0 POLLUTION PREVENTION MANAGEMENT MEASURES ................................ 259.1. Spills Clean .............................................................................................................. 259.2. Trash and Debris..................................................................................................... 259.3. Hazardous Materials .............................................................................................. 259.4. Truck Washing........................................................................................................ 25


Storm Water Pollution Prevention Plan ii October 2008

9.5. Dust Control ............................................................................................................ 25

10.0 PLAN MODIFICATIONS ............................................................................................. 26

11.0 NOTICE OF TERMINATION...................................................................................... 27

12.0 RECORD RETENTION ................................................................................................ 28

List of Figures

FIGURE 1 PROJECT LOCATION MAP ............................................................................................. 4FIGURE 2 DRAINAGE MAP ............................................................................................................. 5FIGURE 3 LAND USE ....................................................................................................................... 8FIGURE 4 SOILS .............................................................................................................................. 9FIGURE 5 EROSION CONTROL PLAN PHASE II............................................................................ 17FIGURE 6 EROSION CONTROL PLAN PHASE III………………………………………………..18

List of Tables

TABLE 1 SEED MIXTURE .............................................................................................................. 15

List of Appendices

Appendix A IEPA General Construction Permit –ILR10Appendix B Drainage StudyAppendix C Revision DocumentationAppendix D Erosion Control DetailsAppendix E Inspection LogAppendix F Incidence of NoncomplianceAppendix G Notice of Termination


Storm Water Pollution Prevention Plan 1 October 2008

1.0 CERTIFICATION STATEMENT

Responsible Official Certification:

As the Responsible Official with the authority to commit personnel, financial, and otherresources to assure compliance with this Storm Water Pollution Prevention Plan (SWPPP),I certify under penalty of law that this document and all attachments were prepared under mydirection or supervision in accordance with a system designed to assure that qualified personnelproperly gathered and evaluated the information submitted. Based on my inquiry of theperson(s) who manage the system and those directly responsible for preparing this plan, theinformation contained in this document is, to the best of my knowledge and belief, true, accurate,and complete. I am aware that there are significant penalties for submitting false information,including the possibility of fine and imprisonment for knowing violations.

Date: _______________________________________________Name __Art Fletcher___________________________________Title: __Project Manager_______________________________Signature: ______________________________________________

Contractor Certification

The Owners (Grand Ridge Energy LLC, Grand Ridge Energy II LLC, and Grand Ridge EnergyIII LLC) has been identified as the project contractor (Contractor); therefore, additionalcertification is not required. However, if the Contractor should change, the SWPPP must bemodified to clearly identify contractor(s) or subcontractor(s) responsible for each activityassociated with constructing this project. In addition, contractor(s) and subcontractor(s) mustsign the following certification statement before conducting any professional service at the site.

“I certify under penalty of law that I understand the terms and conditions of the generalnational pollutant discharge elimination system (NPDES) permit (ILR10) that authorizesthe storm water discharges associated with industrial activity from the construction siteidentified as part of this certification.”



2.0 NPDES REQUIREMENTS

Construction activities resulting in disturbance of one acre or more of land must be coveredunder the National Pollutant Discharge Elimination System (NPDES) General Permit forConstruction Activities. In addition, sites disturbing less than one acre within in a largercommon plan of development or sale that is more than one acre, also need NPDES Permitcoverage. A SWPPP must be crafted to meet the site-specific requirements of each project. TheOwner shall submit to the Illinois Environmental Protection Agency (IEPA) a Notice of Intent(NOI) at least thirty (30) calendar days prior to the commencement of construction activities.The SWPPP should not be submitted with the NOI; however, it must be completed before thestart of construction.

A typical SWPPP covers five items:

1. Temporary erosion and sediment control best management practice (BMPs)

2. Permanent erosion and sediment control BMPs

3. Permanent storm water management

4. Pollution prevention management measures

5. Inspection and maintenance

A copy of the IEPA General NPDES Permit for Storm Water Discharge from ConstructionActivity (ILR10) and the project notices of intents are included in Appendix A.



3.0 PROJECT DESCRIPTION

The Grand Ridge Wind Farm Project, which encompasses Phases I, II, and III will beapproximately 250 megawatts (MW), consisting of the construction of up to 166 wind turbines,operation and maintenance (O&M) building, project substation, approximately 1.5 milegenerator lead line and collection system, and switchyard located in LaSalle County, Illinois(Figure 1). Phase I, includes 66 turbines, access roads, the O&M building, the substation and thegenerator lead line and collection system. Phases II and III consists of 34 and 66 turbines andaccess roads, respectively The total project area is 71,300 acres with the expected area ofdisturbance being approximately 175 acres. The receiving waters are unnamed tributaries ofWaupecan Creek, Otter Creek, Covel Creek, Hog Run, and Kickapoo Creek.

A drainage study was conducted on the proposed project area to determine the impact ofconstruction on the existing drainage system (Figure 2). Using the methodology prescribed in theNational Resources Conservation Service Technical Release 55 (TR-55) – Urban Hydrology forSmall Watershed, the study concluded that the impacts to the existing drainage system would bewell within the standard margin of error and thereby rendering the impact insignificant. Thecomplete drainage study is in Appendix B for review.

Construction slated for this site involves activities that shall expose soil to erosion. The activitiescovered in the SWPPP include the following:

• Clearing and grading

• Construction of the facility – Site access road

• Construction of the facility – Wind turbine foundations

• Trenching of underground electrical (collection) and communication cables

• Construction of the facility - operation and maintenance facility

• Construction of the facility - substation

• Dewatering

The conditions used to select erosion and sediment control BMPs include the following:

• Land use

• Soil type

• Precipitation



Figure 1 Project Location Map

0th Rd

E 2

0th

Rd

E 2650th R

d

N 2375th Rd

E 2

4th

Rd

N 2409th Rd

W 2

6th

Rd

N 19th Rd

N 2379th Rd

Forrest DrE

175

0th

Rd

E 2

5th

Rd

N 23rd Rd

N 24th Rd

N 22nd Rd

Irene St

N 20th Rd

E 2

659t

h R

d

E 2

8th

Rd

N 18th Rd

E 2

350t

h R

d

N 2350th Rd

PonderosaPl

E 1725th Rd

N 16th Rd

E 2

9th

Rd

B St

W Plumb St RooseveltSt

N 15th Rd

E 2

3rd

Rd

Campbell

St

Syl

van

Ave

S L

ane

St

E Penn St

Bro

okfie

ld D

r

DelMonte Ct

E 2

1st R

d

rds Rd

E 1

8th

Rd

Lane

St

N 1475th RdE

26t

h R

d

E 1

9th

Rd

PavillionSt

DannyDr

31N 3E OtterCreek

31N 4E

Allen31N 5E

32N 3E

GrandRapids32N 4E

Brookfield32N 5E

33N 3E 33N 4E 33N 5E 33N6E

850000.000000

850000.000000

860000.000000

860000.000000

870000.000000

870000.000000

880000.000000

880000.000000

890000.000000

890000.000000

900000.000000

900000.000000

910000.000000

910000.0000001632

000.0

0000

0

1632

000.0

0000

0

1639

000.0

0000

0

1639

000.0

0000

0

1646

000.0

0000

0

1646

000.0

0000

0

1653

000.0

0000

0

1653

000.0

0000

0

1660

000.0

0000

0

1660

000.0

0000

0

1667

000.0

0000

0

1667

000.0

0000

0

1674

000.0

0000

0

1674

000.0

0000

0

1681

000.0

0000

0

1681

000.0

0000

0

Project Location

0 1 20.5

Miles

LegendProject Boundary Phase I

Phase II Project Site

Phase III Project Site

Existing Transmission 138kV

Existing Transmission 345kV

Generator Lead Line

Township Boundary

Map

Doc

umen

t: (\\

msp

e-gi

s-fil

e\G

ISP

roj\I

nven

ergy

\743

49_G

rand

Rid

ge_P

hase

II\m

ap_d

ocs\

mxd

\SU

P\G

rand

Rid

geP

hase

II_P

roje

ctLo

catio

n_P

relim

inar

ySite

Layo

utA

.mxd

)6/

23/2

008

-- 1

1:09

:57

AM

0 5,000 10,0002,500

Feet

0 1,000 2,000500

Meters

Grand RidgePhase I, II & III

LaSalle County, Illinois

Grand Ridge Phase I, II & IIIProject Area Location

L A S A L L EL A S A L L E

WIL

LW

ILL

L I V I N G S T O NL I V I N G S T O N

GR

UN

DY

GR

UN

DY

BU

RE

AU

BU

RE

AU

W O O D F O R DW O O D F O R D

FO

RD

FO

RD

Figure 1



Figure 2 Drainage Map

Ransom

Grand RidgeBrookfield32N 5E

Grand Rapids32N 4E

Allen31N 5E

Otter Creek31N 4E

32N 3E

31N 3E

33N 4E 33N 5E33N 3E

99

97

96

95

93

8887

84

207

202203204

205

162

161

160

159

158157

156

155154152

151150

149148

147144

142

141

138137

136135

134133

132 130

129128

127

126

125

124

123

122

120

119118

117

116114

113112111

110

109

108

106 105

104103

102101

10094B

92B91B

90B89B

86B

85B83B

82B

80B

78B

69B 23B

146C145C

166B

165B

164B

163B

153B

146B145B

143B

140B

139B

131B121B

115B

107B

N 19th Rd

N 20th Rd

N 18th Rd

N 23rd Rd

E18

thR

d

E24

thR

d

N 16th Rd

N 22nd Rd

E21

stR

d

E23

rdR

d

N 24th Rd

N 15th Rd

E20

thR

d

W26

thR

dE

26th

Rd

E28

thR

d

E25

thR

d

E29

thR

d

E19

thR

d

N 2350th Rd

N 2379th Rd

E26

50th

Rd

Broo

kfie

ldD

r

N 1475th RdE

2609

thR

d

N 2375th Rd

Marrilla Park Rd

Lane

St

Forrest Rd

E26

59th

Rd

E19

thR

d

N 15th Rd

E25

thR

d

E26

50th

Rd

E21

stR

d

N 16th Rd

E19

thR

d

E20

thR

d

E28

thR

d

N 22nd Rd

N 2350th Rd

N 1475th Rd

850000.000000

850000.000000

860000.000000

860000.000000

870000.000000

870000.000000

880000.000000

880000.000000

890000.000000

890000.000000

900000.000000

900000.000000

910000.000000

910000.000000

1632

000.0

0000

0

1632

000.0

0000

0

1639

000.0

0000

0

1639

000.0

0000

0

1646

000.0

0000

0

1646

000.0

0000

0

1653

000.0

0000

0

1653

000.0

0000

0

1660

000.0

0000

0

1660

000.0

0000

0

1667

000.0

0000

0

1667

000.0

0000

0

1674

000.0

0000

0

1674

000.0

0000

0

1681

000.0

0000

0

1681

000.0

0000

0

Drainage Map

0 0.5 10.25

Miles

LegendDelineations_Ph_I,_II_and_III

Phase III

Phase II

Phase I

Turbine_Ph_II_and_III

Access Roads_Ph_II_and_III

Turbines_Ph_I

AccessRoads_Ph_I

Collection System

Map

Doc

umen

t:(\

\msp

e-gi

s-fil

e\G

ISP

roj\I

nven

ergy

\743

49_G

rand

Rid

ge_P

hase

II\m

ap_d

ocs\

mxd

\SU

P\G

rand

Rid

geP

hase

II_P

roje

ctLo

catio

n_P

relim

inar

ySite

Layo

utB

.mxd

)6/

23/2

008

--11

:17:

57A

M

0 2,500 5,0001,250

Feet

0 500 1,000250

Meters



Grand Ridge Phase II & IIIProject Area Location


WIL

LW

ILL


GR

UN

DY

GR

UN

DY

BU

RE

AU

BU

RE

AU


FO

RD

FO

RD

M A R S H A L LM A R S H A L L

K E N D A L LK E N D A L L

P U T N A MP U T N A M

K A N K A K EK A N K A K E

I R O Q UI R O Q U

L E EL E EFigure 2



4.0 POTENTIAL FOR STORM WATER POLLUTION

4.1. LAND USE

Land use of the project area was determined based on a review of aerial photographs and LaSalleCounty land cover data (Figure 3). The dominant land use of the project area is farmland,consisting of 90 percent of the project area. Corn, soybean and wheat are the predominant cropin the project area. The remainder of the project area consists of road right-of-way, non-agriculture, farmstead sites, and permanent pasture. The landscape in the project area isrelatively flat with gently rolling hills.

4.2. SOILS

There are six soils associations found within the project area: Catlin-Flanagan-Drummer, Plano-Proctor-Worthen, St Clair-Nappanee-Frank, St. Charles-Camden-Drury, Swygert-Bryce-Mokena, Varna-Elliott-Ashkum, and Wenona-Rutland-Streator (Figure 4).

The Catlin-Flanagan-Drummer Association covers approximately a quarter of the site. Thisassociation is composed of very deep, moderately well-drained to poorly-drained soils on loess.Moderately well-drained soils and somewhat poorly-drained soils in this association occur onconvex slopes. Poorly-drained soils in this association are found on nearly level or depressionalstream terraces, outwash plains, and till plains. Most soils in this association are cultivated.Native vegetation is generally prairie grasses, with some marsh species interspersed.

The Plano-Proctor-Worthen Association comprises very deep, well-drained soils on streamterraces. The soils are formed in loam or silty outwash. This association makes up a smallportion of the project area. Most areas are cultivated and native vegetation consists of prairiegrasses.

The St. Clair-Nappanee-Frank Association consists of very deep soils that are moderately well-drained to somewhat poorly-drained on glacial till on ground moraines and lake plains. Thisassociation makes up a very small portion of the project area. The soils are generally cultivatedor used for pasture. The native vegetation is deciduous forest.

The St. Charles-Camden-Drury Association consists of deep to very deep, well-drained soils onoutwash plains and along stream terraces. They tend to occur along the base of side-slopes aswell as within stream terraces and alluvial plains. Most soils are cultivated but some areas areused as pasture or have woodland cover. The association makes up a very small portion of theProject area (less than one percent). Native vegetation is generally mixed hardwood forest.



The Swygert-Bryce-Mokena Association is the dominant soil association in the project area andcovers over one third of the site. Swygert-Bryce-Mokena is composed of very deep to deep soilsformed in clayey-till, loess and lacustrine deposits, and range from poorly-drained to somewhatpoorly-drained. Most soils in this association are cultivated in areas that have been convertedfrom native prairie and marshland.

The Varna-Elliott-Ashkum Association consists of very deep, moderately well-drained to poorly-drained soils on till plains. This association makes up a small portion of the project area.Moderately well-drained soils and somewhat poorly-drained soils in this association occur onconvex slopes. Poorly drained soils in this association are found on colluvial positions and inupland drainageways. Most soils in this association are cultivated. Native vegetation isgenerally prairie grasses, with some marsh species interspersed.

The Wenona-Rutland-Streator Association covers approximately one quarter of the site. Thisassociation is composed of deep to very deep soils formed in lacustrine deposits, clayey till, andloess, which are moderately well-drained to poorly-drained. Well-drained soils in thisassociation occur on convex summits. Somewhat poorly and poorly-drained soils in thisassociation are found on nearly level lake planes. Most soils in this association are cultivated.Native vegetation is generally prairie grasses and marsh species.

4.3. PRECIPITATION

Average yearly rainfall, for this part of Illinois according to Technical Paper 401, ranges from 26to 29 inches. Individual storms during spring and summer can produce significant quantities ofrainfall. For instance, a one-year/24-hour storm can produce approximately 2.5 inches ofrainfall, and 2.9 inches for a two-year/24-hour storm. Storm water management will be neededto manage runoff during and after construction.

Without erosion and sediment control BMPs, the project could produce significant amounts ofsediment. The function of the SWPPP is to outline procedures to minimize erosion and mitigatesediment during construction.

1 Technical Paper No. 40: Rainfall Frequency Atlas of the United Stated for Durations from 30 Minutes to 24 Hoursand Return Periods from 1 to 100 Years. May 1961. United States Department of Commerce: Washington D. C.



Figure 3Land Use

Ransom

Grand Ridge Brookfield32N 5E

Allen31N 5E

Grand Rapids32N 4E

Otter Creek31N 4E

32N 3E

31N 3E

33N 4E 33N 5E33N 3E 33N 6E

Vienna32N 6E

Highland31N 6E

N 19th Rd

N 20th Rd

N 18th Rd

E18

thR

d

N 23rd Rd

E24

thR

d

N 16th Rd

E21

stR

d

E23

rdR

d

N 15th Rd

N 24th Rd

E20

thR

d

W26

thR

dE

26th

Rd

E28

thR

d

E25

thR

d

E29

thR

d

N 2350th Rd

E19

thR

d

N 22nd Rd

N 2379th Rd

E26

50th

Rd

Lasa

lleR

d

Broo

kfie

ldD

r

N 1475th Rd

Mine Rd

E26

09th

Rd

N 2375th Rd

Sylv

anA

ve

Lane

St

Elizabeth St

Forrest Rd

N 1475th Rd

N 15th Rd

N 2350th Rd

N 15th Rd

N 22nd Rd

N 16th Rd

E20

thR

d

E19

thR

d

E28

thR

d

E25

thR

d

E21

stR

d

E23

rdR

d

E19

thR

d

E26

50th

Rd

850000.000000

850000.000000

860000.000000

860000.000000

870000.000000

870000.000000

880000.000000

880000.000000

890000.000000

890000.000000

900000.000000

900000.000000

910000.000000

910000.000000

1632

000.0

0000

0

1632

000.0

0000

0

1639

000.0

0000

0

1639

000.0

0000

0

1646

000.0

0000

0

1646

000.0

0000

0

1653

000.0

0000

0

1653

000.0

0000

0

1660

000.0

0000

0

1660

000.0

0000

0

1667

000.0

0000

0

1667

000.0

0000

0

1674

000.0

0000

0

1674

000.0

0000

0

1681

000.0

0000

0

1681

000.0

0000

0

Land Use

0 10.5

Miles

LegendPhase I

Phase II

Phase III

Local Streets

Township Boundary

County Boundary

Agriculture

Open Areas

Developed

Wet

Map

Doc

umen

t:(\

\msp

e-gi

s-fil

e\G

ISP

roj\I

nven

ergy

\743

49_G

rand

Rid

ge_P

hase

II\m

ap_d

ocs\

mxd

\SU

P\G

rand

Rid

geP

hase

II_La

ndU

se.m

xd)

6/23

/200

8--

10:1

5:34

AM

0 5,000 10,0002,500

Feet

0 1,500 3,000750

Meters



Dat

aSo

urce

:Lan

dC

over

2000

-Illi

nois

Dep

artm

ento

fAgr

icul

ture

Figure 3



Figure 4Soils

Ransom

Grand Ridge Brookfield32N 5EGrand Rapids32N 4E

Allen31N 5EOtter Creek31N 4E

32N 3E

31N 3E

33N 4E 33N 5E33N 3E 33N 6E

Vienna32N 6E

Highland31N 6E

N 19th Rd

N 20th Rd

N 18th Rd

E18

thR

d

N 23rd Rd

E24

thR

d

N 16th Rd

E21

stR

d

E23

rdR

d

N 15th Rd

N 24th Rd

E20

thR

d

W26

thR

dE

26th

Rd

E28

thR

d

E25

thR

d

E29

thR

d

N 2350th Rd

E19

thR

d

N 22nd Rd

N 2379th Rd

E26

50th

Rd

Lasa

lleR

d

Broo

kfie

ldD

r

N 1475th Rd

Mine Rd

E26

09th

Rd

E 2850th Rd

N 2375th Rd

Sylv

anA

ve

Lane

St

Forrest Rd

N 1475th Rd

N 15th Rd

N 2350th Rd

N 15th Rd

N 22nd Rd

E23

rdR

d

N 16th Rd

E20

thR

d

E19

thR

d

E28

thR

d

E25

thR

d

E21

stR

d

E19

thR

d

E26

50th

Rd

850000.000000

850000.000000

860000.000000

860000.000000

870000.000000

870000.000000

880000.000000

880000.000000

890000.000000

890000.000000

900000.000000

900000.000000

910000.000000

910000.000000

1632

000.0

0000

0

1632

000.0

0000

0

1639

000.0

0000

0

1639

000.0

0000

0

1646

000.0

0000

0

1646

000.0

0000

0

1653

000.0

0000

0

1653

000.0

0000

0

1660

000.0

0000

0

1660

000.0

0000

0

1667

000.0

0000

0

1667

000.0

0000

0

1674

000.0

0000

0

1674

000.0

0000

0

1681

000.0

0000

0

1681

000.0

0000

0

Soil Associations

0 10.5

Miles

LegendPhase I

Phase II

Phase III

Local Streets

County Boundary

Township Boundary

Soil Association

Catlin-Flanagan-Drummer

Plano-Proctor-Worthen

St Clair-Nappanee-Frank

St. Charles-Camden-Drury

Swygert-Bryce-Mokena

Varna-Elliott-Ashkum

Wenona-Rutland-Streator

Map

Doc

umen

t:(\

\msp

e-gi

s-fil

e\G

ISP

roj\I

nven

ergy

\743

49_G

rand

Rid

ge_P

hase

II\m

ap_d

ocs\

mxd

\SU

P\G

rand

Rid

geP

hase

II_S

oilA

ssoc

iatio

ns.m

xd)

6/18

/200

8--

10:1

9:43

AM

0 5,000 10,0002,500

Feet

0 1,500 3,000750

Meters



Figure 4



5.0 CONSTRUCTION ACTIVITIESThe Contractor shall schedule and conduct all operations to minimize the exposure of soils toerosion and provide means to trap sediments leaving the site. Installation of temporary controlmeasures that shall contribute to the control of erosion and prevention of sediment leaving thesite shall be carried out prior to and concurrently with construction activities.

The SWPPP provides structural and non-structural activity-specific erosion and sediment controlBMPs. Erosion and sediment control BMPs selected for each activity are based upon expectedconstruction conditions and methods. The SWPPP can be modified in accordance with actualconditions encountered in the field (Appendix C).

5.1. ACCESS ROAD

Grading of access roads represents the largest land-disturbing activity of the Project. Erosionand sediment controls for the road construction include, but are not limited to, the following:

• Culvert protection

• Mulching

• Preservation of existing vegetation

• Seeding

• Silt fences

The erosion and sediment controls for access road construction are dependent upon adjacent landuse, overland slope, watershed area, and drainage patterns. Silt fence shall be used on thedownstream or downslope side of disturbed areas to minimize the transport of sediment ladenstorm water from project-related activities. Preserved existing vegetation or biorolls can besubstituted for silt fence based on site evaluation by a qualified person.

5.2. WIND TURBINE FOUNDATIONS

Construction of the turbine sites consists of stripping of topsoil and excavation for foundationslabs. Excavation will remove approximately 512 cubic yards of material per turbine site forwhich 332 cubic yards will be used as backfill. The Contractor is required to thin spread thesurplus excavated material within the easement so as to blend with the natural contours of theland. Erosion and sediment controls for this construction include, but are not limited to, thefollowing:

• Mulching


• Seeding

• Silt Fences



5.3. TRENCHING OF UNDERGROUND ELECTRICAL AND COMMUNICATION CABLES

Electrical and communication cables will be placed underground using a trenching machine.Erosion and sediment controls for the trenching and other areas disturbed by the installation ofunderground electrical cables include, but are not limited to, the following:

• Mulching


• Seeding

• Silt fences

5.4. CONSTRUCTION OF FACILITIES – OPERATION AND MAINTENANCE FACILITY

Construction of the operation and maintenance facility will involve the stripping of topsoil andexcavation of additional material for the construction of foundations. Erosion and sedimentcontrols for this phase of the construction shall include, but are not limited to, the following:

• Mulching

• Preservation of existing vegetation• Seeding• Silt fences• Temporary sediment trap

5.5. CONSTRUCTION OF FACILITIES – SUBSTATION

Construction of the substation will involve the stripping of topsoil and excavation of additionalmaterial for the construction of foundations. Erosion and sediment controls for the substationshall include, but are not limited to, the following:

• Mulching• Preservation of existing vegetation• Seeding• Silt fences• Temporary sediment trap

5.6. DEWATERING (IF NEEDED)During trenching operation and other construction related activities, dewatering may be required.If dewatering is required, the Contractor shall not discharge sediment laden water directly intosurface water or into a drainage pipe or ditch that flow directly to a surface water. TheContractor shall construct a sediment trap (Appendix D) to settle out sediment before thedischarged water enters surface waters.



6.0 TEMPORARY EROSION AND SEDIMENT CONTROL BMPSA sequence for installation of erosion and sediment control BMPs, stabilization activities, andmaintenance shall be prepared by the Contractor and included into the SWPPP. Generalprinciples in developing the sequence of activities include, but are not limited to, the following:

• Install downslope and sideslope perimeter controls before land disturbing activity occurs.

• Do not disturb an area until it is necessary for construction to proceed.

• Cover or stabilize disturbed areas as soon as possible.

• Time construction activities to limit impact from seasonal climate changes or weatherevents.

• Do not remove temporary perimeter controls until all upstream areas reach finalstabilization.

Temporary controls for construction activities include the following:

• Control of surface water

• Culvert protection

• Ditch protection

• Mulching

• Preserve existing vegetation

• Sediment trap

• Silt fence

• Slope protection

• Street cleaning

• Temporary seeding

• Topsoil segregation and stockpile protection area

The structural BMPs shall be installed as recommended on Figure 5 and specified in AppendixD). The qualified person2 on site can modify recommendations for the field as he or she deemsnecessary.

2 Qualified Person refers to a person knowledgeable in the principles and practice of erosion and sediment controlsuch as a licensed engineer or other knowledgeable person who possesses the skills to assess conditions at theconstruction site that impact storm water quality and to assess the effectiveness of any sediment and erosion controlmeasures selected to control the quality of storm water discharges from the construction activities.



6.1. CONTROL OF SURFACE WATER

Control of surface water may be necessary during the project. Surface water may need to bediverted around or through the construction by earthen berms or trenches. Water collected inexcavation areas throughout the project site may be removed using pumps. Discharge fromdewatering operations must be treated in a sediment trap (Appendix D).

6.2. CULVERT PROTECTION

Refer to Section 7.1, Riprap.

6.3. DITCH PROTECTION

At a minimum, the last 200 feet of ditch shall have temporary or permanent stabilizationmeasures in place within 24 hours of direct connection to surface water. Ditches shall be kept ina rough, graded but smooth condition in order to properly install erosion control seeding, mulch,mats, and blankets. Stabilization methods for ditch bottom wetted perimeters will include one ofthe following, or combinations of, erosion control blankets, mats, riprap, biorolls, or rock checkdams. The method chosen will be based on an analysis of the tractive forces on the lining. Ditchgrades between 3 and 5 percent will require rock checks or category four erosion control blanketand biorolls, to be determined based on flow velocities. Where ditch grades exceed 5 percent,type seven rock check dams, or equivalent bmp, shall be installed. Check dams will be spaced sothat the crest of the downstream dam is at the elevation of the toe of the upstream dam. Abovethe wetted perimeter, the ditch will be stabilized by seeding and mulch and/or erosion controlblankets, depending on side slope steepness and length.

6.4. MULCH

Mulch materials shall be spread uniformly by hand or machine. When spreading straw mulch by

hand, divide the area to be mulched into approximately 1,000 sq. ft. sections and place

approximately 90 lbs. of straw in each section to facilitate uniform distribution.

Straw mulch shall be anchored immediately after spreading to prevent wind blow. One of the

following methods of anchoring straw shall be used:

a. Mulch Anchoring Tool - This is a tractor-drawn implement (mulch crimper, serrated

straight disk, or dull farm disk) designed to punch mulch approximately 2 inches into the

soil surface. This method provides maximum erosion control with straw. It is limited to

use on slopes no steeper than 3:1, where equipment can operate safely. Machinery shall

be operated on the contour.

b. Liquid Mulch Binders - Application of liquid mulch binders and tackifiers should be

heaviest at edges of areas and at crests of ridges and banks, to prevent wind blow. The



remainder of the area should have binder applied uniformly. Binders (asphalt,

synthetic/chemical or wood fiber) may be applied after mulch is spread; however, it is

recommended that it is sprayed into the mulch as it is being blown onto the soil.

Applying straw and binder together is the most effective method.

c. Mulch Nettings - Lightweight, degradable, plastic, polyester, or paper nets may be

stapled over the mulch according to manufacturer's recommendations. When mulching is

done in late fall or during June, July, and August, or where soil is highly erodible, nets

should only be used in conjunction with an organic mulch such as straw

6.5. PRESERVE EXISTING VEGETATION

The Contractor shall preserve existing natural vegetation. Natural vegetation provides a bufferzone and stabilized area which helps control erosion, protect water quality, and enhance aestheticbenefits. This also minimizes the amount of exposed bare soil.

6.6. SEDIMENT TRAPS

Sediment-laden discharge from dewatering operations shall be directed to constructed temporarysediment trap (Appendix D). The sediment trap volume must be at least 1,800 cubic feet peracre of the contributing area. The Contractor shall consider the use of silt fence or hale bales totrap sediment if space is not available within the property boundaries.

6.7. SILT FENCE

Silt fence shall be installed around staging areas and stockpiles/waste area, on the downstreamside of fill slopes as needed, and to protect trees from damage. Silt fence shall be either machinesliced into the soil or installed by hand. Hand-installed silt fence shall have the edge buried orweighted by sand bags (Appendix D).

6.8. SLOPE PROTECTION

There will be no unbroken slope lengths greater than 75 feet for slopes with a grade of 3:1 orsteeper. All exposed areas with a continuous positive slope within 200 feet of surface water willhave a temporary or permanent cover year round. Planned slopes of 3:1 or steeper and greaterthan 75 feet in length will be temporarily or permanently stabilized in increments not to exceed75 feet, prior to constructing or disturbing a new increment. Long slopes shall be broken intoshorter lengths by installing silt fence in J-hooks along the contour or by installing biorolls ininterlocking herringbones. If temporary seeding and mulch cannot be used on slopes steeperthan 3:1, then the slope shall be covered with tarps or plastic sheeting. The solo surface on re-vegetated slopes will be roughened using any appropriate implement that can be safely operatedon the slope, such as bulldozers or disks. The grooves will be created perpendicular to the slopeto help establish vegetative cover, reduce runoff velocity, increase infiltration, and provide for



sediment trapping. Staged seeding and mulching of slopes shall be done as fill is raised and thelower slope becomes inactive.

6.9. STREET CLEANING

Cleaning tracked sediments and debris from paved streets, as needed, prevents unwantedmaterial from being washed into surface waters, and improves the appearance of publicroadways. The Contractor shall inspect paved roadways in front of construction entrances/exitsat the end of each day and tracked soil shall be removed.

6.10. TEMPORARY CONSTRUCTION ENTRANCES/EXITS

To prevent tracking sediments onto paved surfaces, construction entrances shall be constructedby overlaying geotextile fabric with a 6-inch of class V (5). Vegetation and topsoil shall not beremoved from the shoulder zones to construct the entrances, but tall vegetation may be mowed.If entrance begins to rut, stabilize by placing a geogrid and additional class V (5) in roadway.

The entrances radius shall be reduced and the area restored to the geometry of a rural countyroad intersection at the end of the project. Areas outside of the permanent roadway shouldermay require re-grading. Compacted soils shall be loosened by ripping or disking, thenre-vegetated and mulched. This should be completed in conjunction with the other projectproposed for this site.

6.11. TEMPORARY SEEDING

When disturbed soils are left exposed or permanent turf establishment is not possible due toseasonal restrictions in pasture, ditch bottoms, side slopes and fill slopes, then apply theappropriate temporary seed mix for the time of year and apply straw mulch. As per therequirements taken from the Illinois Urban Manual3, all exposed areas with a continuous positiveslope within 200 linear feet of surface water must have temporary erosion protection orpermanent cover for exposed soil areas year round.

The Contractor shall apply the following as deemed appropriate for the seeding dates andconstruction activities (Table 1).

Table 1: Seed Mixture

Seeding Dates Species Application Rate

Early Spring – July 1 Oats 90 lbs/ ac

Early Spring – Sept. 30 Cereal Rye 90 lbs/ac

Early Spring – Sept. 30 Wheat 90 lbs/ac

Early Spring – Sept. 30 Perennial Ryegrass 25 lbs/ac

3 Illinois Urban Drainage Manual. Natural Resources Conservation Service Standard Practice



Seed shall be evenly applied with a cyclone seeder, drill, culti-packer seeder, or hydroseeder.

Small grains shall be planted no more than 1 inch deep. Grasses shall be planted no more than

one-half inch deep. Cover broadcast seeds by culti-packing, dragging a harrow, or raking.

Seed Bed Preparation

Prepare seedbed of loose soil to a depth of 3 to 4 inches. If recent tillage or grading operations

have resulted in a loose surface, additional tillage or roughening may not be required except to

breakup large clods. If rainfall caused the surface to become sealed or crusted, loosen it just

prior to seeding by disking, raking, harrowing, or other suitable methods. Groove or furrow

slopes steeper than 3:1 on the contour before seeding.

Where the pH of the soil is below 5.5, apply one-and-one-half to 2 tons per acre of finely ground

agricultural limestone. If the seeding period is less than 30 days, liming will not be required.

Apply 500 pounds per acre of 10-10-10 fertilizer or equivalent. Incorporate lime and fertilizer

into the top 2 to 4 inches of soil. If the seeding period is less than 30 days, fertilizer will not be

required.

6.12. TOPSOIL SEGREGATION AND STOCKPILE PROTECTION AREA

The Contractor shall explore the project area to determine if sufficient surface soil of goodquality exists to justify stripping. Stripping of topsoil from areas where it will later be reappliedis not recommended if bedrock or other root limiting layer is within a depth of 20 inches.Topsoil shall be free of debris, trash, stumps, rocks, and noxious weeds, and shall give evidenceof being able to support healthy vegetation. It shall contain no substance that is potentially toxicto plant growth.

It is envisioned that some of the excavated materials shall be suitable for backfill and siterestoration. Topsoils and organic soils stripped prior to excavation shall be stockpiled separatelyfrom materials suitable for backfill or access road embankment. Unsuitable material shall bepromptly removed from the site or stockpiled until removal is possible. Silt fence shall beinstalled around the entire perimeter of segregated topsoil areas and waste area stockpile locationto prevent sediment for leaving the designation location. These areas shall be determined by theContractor and protected as defined herein.

Soil stockpiles shall be stabilized or protected with sediment trapping measures such as practicestandards silt fence or temporary seeding. Perimeter controls shall be placed around thestockpile immediately; seeding of stockpiles shall be completed within 7 days of formation of thestockpile if it is to remain dormant for longer than 30 days.



Figure 5Erosion Control Plan – Phase II

33N 4E

Grand Rapids32N 4E

Brookfield32N 5E

33N 5E

99

97

96

95

93

8887

84

10094B

92B

91B

90B89B

86B

85B

83B

82B

90C

80B

78B

69B 23B

2213

N 23rd Rd

N 22nd Rd

N 24th Rd

E21

stR

d

E19

thR

d

E20

thR

d

N 25th Rd

E23

rdR

d E24

thR

d

E23

50th

Rd

N 2453rd Rd

N 2375th Rd

E18

59th

Rd

Trol

l Rd

E23

60th

Rd

N 2450th Rd

E1879th

Rd

N 25th RdN 25th Rd

860000.000000

860000.000000

870000.000000

870000.000000

880000.000000

880000.000000

1667

000.0

0000

0

1667

000.0

0000

0

1674

000.0

0000

0

1674

000.0

0000

0

1681

000.0

0000

0

1681

000.0

0000

0

1688

000.0

0000

0

1688

000.0

0000

0

ErosionControl Plan

Phase IIIProject Site

0 0.5 10.25

Miles

LegendSilt fence

Phase II

Permanent Meterological Tower

Temporary Meterological Tower

Turbine

Access Roads

Collection System

Township Boundary

Dewatering location

Potential culvert

Map

Doc

umen

t:(\

\msp

e-gi

s-fil

e\G

ISP

roj\I

nven

ergy

\743

49_G

rand

Rid

ge_P

hase

II\m

ap_d

ocs\

mxd

\SU

P\G

rand

Rid

geP

hase

II_P

roje

ctLo

catio

n_P

relim

inar

ySite

Layo

utB

.mxd

)6/

23/2

008

--11

:17:

57A

M

0 2,500 5,0001,250

Feet

0 500 1,000250

Meters

Grand RidgePhase II & III




WIL

LW

ILL


GR

UN

DY

GR

UN

DY

BU

RE

AU

BU

RE

AU


FO

RD

FO

RD





I R O Q UI R O Q U

L E EL E EFigure 5



Figure 6Erosion Control Plan – Phase III

Ransom

Allen31N 5E

Otter Creek31N 4E

Brookfield32N 5E

Grand Rapids32N 4E

207

202203

204

205

162

161

160

159

158157

156

155154152

151150

149148

147

144

142

141

138137

136135

134

133

132 130

129128

127

126

125

124

123

120

119

118

117

116

114

113112

111

110

109

108

106105

104103

102101

146C145C

166B

165B

164B

163B

153B

146B

145B

143B

140B

139B

131B121B

115B

107B

5301

2

N 18th Rd

N 16th Rd

N 19th Rd

E24

thR

d

N 15th Rd

W26

thR

d

E21

stR

d

E25

thR

d

E23

rdR

d

E26

thR

d

W Plumb StW Harrison St

Roosevelt St

Campbell St

E26

50th

Rd

Lane

St

E23

rdR

d

E21

stR

d

N 15th Rd

E25

thR

d

E23

rdR

d

870000.000000

870000.000000

880000.000000

880000.000000

890000.000000

890000.000000

1639

000.0

0000

0

1639

000.0

0000

0

1646

000.0

0000

0

1646

000.0

0000

0

1653

000.0

0000

0

1653

000.0

0000

0

ErosionControl Plan

Phase IIIProject Site

0 0.5 10.25

Miles

LegendSilt fence

Phase III

Permanent Meterological Tower

Temporary Meterological Tower

Turbine

Access Roads

Collection System

Township Boundary

Dewatering location

Potential culvert

Map

Doc

umen

t:(\

\msp

e-gi

s-fil

e\G

ISP

roj\I

nven

ergy

\743

49_G

rand

Rid

ge_P

hase

II\m

ap_d

ocs\

mxd

\SU

P\G

rand

Rid

geP

hase

II_P

roje

ctLo

catio

n_P

relim

inar

ySite

Layo

utB

.mxd

)6/

23/2

008

--11

:17:

57A

M

0 2,500 5,0001,250

Feet

0 500 1,000250

Meters

Grand RidgePhase II & III




WIL

LW

ILL


GR

UN

DY

GR

UN

DY

BU

RE

AU

BU

RE

AU


FO

RD

FO

RD





I R O Q UI R O Q U

L E EL E EFigure 6



7.0 PERMANENT EROSION AND SEDIMENT CONTROL BMPSPermanent erosion control reestablishes vegetative cover with native or adapted speciesappropriate to the geographic region and includes any structural modifications needed to ensurelong term sustainability. Permanent BMPs include, clean out sediment from the channels,sedimentation basin, and ditches. Flush outlet pipes clean. Remove any unneeded temporaryBMPs within the construction area that shall interfere with permanent BMPs, except perimetersilt fences and as directed by the Engineer/Contractor/Erosion Inspector.

Permanent controls for construction activities shall consist of the following:

• Riprap

• Turf establishment

7.1. RIPRAP

Riprap shall be placed at culvert outlets to meet local jurisdictional requirements (Appendix D).

7.2. TURF ESTABLISHMENT

When land disturbing activities are completed permanent, turf establishment shall then becompleted. Permanent seeding, as noted in the Illinois Urban Manual4 Table A (Code 88),includes oats and perennial ryegrass at seeding rates of 30 to 50 lbs/acre and 10 to 30 lbs/acre,respectively, based upon Pure Live Seed. These are the most practical options for permanentvegetation as they have also been identified for temporary cover.

All seeds shall have the proper stratification and/or scarification to break seed dormancy for

spring or early summer plantings. No treatments are needed for late summer, early fall, or

dormant seeding.

Seeding

Seeding may be done by any of the following methods:

1. Conventional Drill

a. Apply seed uniformly at a depth of quarter-to-half-inch with a drill (band seed) or

cultipacker seeder. On sloping land, seeding operations should be on the contour

wherever possible.

b. Apply mulch or erosion blanket following seeding as required.

2. Broadcast Seeding

a. Culti-pack or roll seedbed, then apply seed uniformly and cover to a quarter-to-

half-inch depth with a cultipacker, or similar tool. Spinning disc type

4Illinois Urban Drainage Manual. Natural Resources Conservation Service Standard Practice



broadcasters equipped with an agitator are effective with native seed mixes.

Often broadcasters require the use of a carrying agent such as oats or vermiculite.

Attention should be given to seed mixes with seeds of varying size and weight so

that the seed remains effectively mixed during seeding operations.

b. On sloping land, dragging, harrowing, or culti-packing should be done on the

contour to ensure seed-soil contact and reduce erosion.

c. Apply mulch or erosion blanket following seeding as required.

3. Hydroseeding

a. For areas to be hydroseeded, final seedbed preparation shall leave the soil surface

in a slightly roughened condition.

b. Lime and fertilizer shall be incorporated prior to seeding unless they are to be

applied at the same time as the seed (applying lime with a hydroseeder may be

abrasive to the equipment). Do not use hydrated lime in a slurry mix.

c. A minimum of 1,000 gallons of water/acre shall be used. The hydraulic seeding

equipment shall include a pump rated and operated at no less than 100 gallons/

minute and at no less than 100 pounds/sq. in. pressure. The tank shall have a

mechanical agitator powerful enough to keep all materials in a uniform

suspension in the water. Calibration of the hydraulic equipment shall be accurate.

d. If seed and fertilizer are mixed together they should be seeded within two hours of

mixing.

4. Dormant Seeding

Dormant seeding may be done between November 15 and March 15 by using

conventional drill or broadcast methods.

If soil conditions are suitable during the dormant seeding period, prepare the

seedbed and seed as indicated in this specification. Apply mulch or erosion

blanket following seeding.

5. No-till

In some instances it may be desirable to sow seed into existing sod, a temporary

cover crop, or natural vegetation. Drilling may be done after herbicide

application to non-native sod or undesirable weeds such as Canada thistle. A

rangeland type grass drill with a no-till attachment shall be used. Seeds should be

drilled to the depth appropriate for the species, according to the supplier’s

recommendations.



The seeds of some plants require light-to-stimulate germination and growth. In

situations with some of these species, particularly some native forbs, a

combination of broadcasting and no-till drilling may be used. Grasses should be

drilled first, followed by broadcasting of the desired forbs.

Seedbed preparation

Prior to seeding or planting, the seedbed shall be relatively free of all weeds (greater than 80

percent weed free), stones, roots, sticks, rivulets, gullies, crusting, and caking, or other debris

which may interfere with seeding or planting operations or plant establishment. The seedbed

shall not be worked when frozen or saturated. Prior to seeding or planting the surface shall be

disked or raked to a depth of 2 to 3 inches either by hand or mechanical means to create a

smooth, uniform seedbed.

If needed, based upon soil conditions and desired vegetation type, incorporate the lime and

fertilizer into the soil with a disk harrow, springtooth harrow, or similar tool, to a depth of at

least 3 inches. On sloping areas, the final operation shall be on the contour.

Fertilizer or lime is generally not recommended for native vegetation establishment unless soil

tests indicate a pH less than 5.5, Phosphorus less than 15 lbs/ac or Potassium less than 150

lbs/ac. If levels are below this, apply lime and fertilizer according to a soil test and the needs of

the vegetation selected. In areas that have not been regraded, which have grown up in weeds, or

to be no-till seeded, an herbicide application may be necessary to reduce competition with the

desired vegetation. An approved herbicide may be used to treat such areas to kill all existing

vegetation. Herbicide application shall be done at least 15 days prior to seeding or planting.

Mulching/Erosion Blanket

All permanent seeding application shall be mulched upon completion of seed application or

planting. Erosion blanket should be substituted for mulch on steep slopes (10 percent slope or

greater) or wherever highly erosive conditions exist (e.g. in drainage swales or waterbody

shorelines). When planting ground covers, it may be advantageous to apply mulch or erosion

blanket prior to planting. Plants should then be tucked into the soil through slits or holes. In all

cases, planting should be done in a staggered pattern to minimize erosion.

Maintenance

The Contractor shall inspect all planted areas for failures and make necessary repairs,

replacements, reseedings, and re-mulching within the planting season, if possible. If a stand has

less than 70 percent ground cover, reevaluate the choice of plant materials, quantities of lime and



fertilizer, seeding or planting methods, time of seeding or planting, and available light and

moisture. Reestablish the stand with modifications based on the evaluation.



8.0 INSPECTION AND MAINTENANCE

8.1. INSPECTION

Periodic inspections should be conducted of temporary and permanent erosion and sedimentcontrols by a qualified person at least once every seven calendar days, within 24 hours of rainfallevents that produce more than 0.5 inches of rain in a 24-hour period or greater, or an equivalentsnowmelt event. Records shall be kept for each inspection and maintenance activity and shallcontain the following information:

• Date and time of inspection

• Name of person(s) conducting inspection

• Findings of inspections, including recommendations for corrective action

• Corrective actions taken, including dates, time, and party completing maintenanceactivities

• Date and amount of all precipitation events that produce more than 0.5 inches of rain orequivalent snow in a 24-hour period or greater

• Document changes to SWPPP

An Inspection Log is provided in Appendix E.

If modifications are required as noted by the qualified person after site inspections, thosemodifications must be implemented within seven calendar days following the inspection. If thesite is in violation of the SWPPP, an Incident of Noncompliance must be completed and submitwithin five calendar days to IEPA (Appendix F):

Illinois Environmental Protection AgencyDivision of Water Pollution Control

Compliance Assurance Section1021 North Grand Avenue East

Post Office Box 19276Springfield, Illinois 62794-9276

8.2. MAINTENANCE

It is the Contractor’s responsibility to maintain silt fences and other temporary erosion andsediment controls in working order throughout the project and make repairs as needed.Maintenance shall include the following:

• Sediment trap shall be at 50 percent capacity.

• Excess sediment behind silt fences and biorolls shall be removed and properly disposedwhen sediments reach one-third the height of the structure.



• Tracked sediments will be removed from paved surfaces at the end of each day.

• Construction entrances shall be maintained daily.

• Temporary and permanent vegetation.

All remaining temporary BMPs and accumulated sediments from silt fences shall be removed30 days after site has undergone final stabilization.



9.0 POLLUTION PREVENTION MANAGEMENT MEASURES

9.1. SPILLS CLEAN

Clean up petroleum spills promptly by placing contaminated soils in a drum(s) for properdisposal off-site.

9.2. TRASH AND DEBRIS

The Contractor shall keep the work site clean. Do not bury trash and debris within fill orbackfill. Collect construction and demolition debris, debris from clearing and grubbing, trash,and other waste at least weekly for disposal off-site. No on-site burning is permitted. Contractorshall comply with federal, state, and local requirements for the disposal of solid waste.

9.3. HAZARDOUS MATERIALS

Oils, fuels, and any hazardous substances must be properly stored, including secondarycontainment for tanks larger than 55 gallons, to prevent spills. Restricted access to storage areasmust be provided to prevent vandalism. Storage and disposal of hazardous materials must be incompliance with federal, state, and local regulations.

9.4. TRUCK WASHING

If required, a location shall be set aside for washing concrete trucks. Discharge from the washshall be directed into a sediment trap, which shall also receive waste concrete. The trap shall becleaned out at least weekly and the material disposed off-site.

9.5. DUST CONTROL

The Contractor shall take measures to prevent fugitive dust during the work. This may requireperiodic wetting of exposed soils and engineered fills until soils are stabilized and pavement isinstalled.



10.0 PLAN MODIFICATIONS

The SWPPP must accurately reflect the site features and operations. If the Owner or Contractorobserves that the plan is not effective in minimizing pollutant discharge from the site, then theSWPPP must be updated or changed (Appendix C). Also, the plan shall be updated to includecontractors and subcontractors identified after the submittal of the NOI, as they are required tocertify the SWPPP.



11.0 NOTICE OF TERMINATION

The Owner is required to submit a Notice of Termination (NOT) to the IEPA after one ormore of the following conditions have been met:

1. Final stabilization has been achieved on all portions of the site for which theOwner is responsible; or

2. All storm water discharge from construction activities authorized by this permit iseliminated.

A copy of the NOT can be found in Appendix G.



12.0 RECORD RETENTIONThe Owner shall retain copies of the SWPPP and all reports and notices required by thepermit for a period of at least three (3) years from the date the permit is terminated.


Storm Water Pollution Prevention Plan Appendix A October 2008

Appendix A : IEPA General Construction Permit –ILR10


Storm Water Pollution Prevention Plan Appendix B October 2008

Appendix B: Drainage Study

Drainage Study Grand Ridge Wind Energy Project

September 2007 Updated September 2008

Prepared by:

30 N. LaSalle St. Chicago, IL 60602

Grand Ridge Wind Energy Project Drainage Study

HDR Engineering, Inc. Certification

CERTIFICATION

This certification documents that this “Drainage Study – Grand Ridge Wind Energy

Project,” prepared by Melcy Curth Pond, a licensed professional engineer in the State of

Illinois, demonstrates that no substantial increases in runoff or change in drainage

patterns are anticipated as a result of construction of the project.


HDR Engineering, Inc. 1

Background

The purpose of this drainage study is to determine the impacts of constructing, wind

turbines, adjacent access roads, and other related facilities on the existing drainage

system in an area in eastern LaSalle County, Illinois, as shown in Figure 1. A

comparison of the peak flows estimated for existing and proposed conditions will be used

to quantify the potential impacts of the proposed

improvements. In addition, a comparison of existing and

proposed drainage patterns will be used to demonstrate

potential impacts on the system.

Approach

The impacts of the proposed construction on drainage

were investigated using the following approach.

The project area was divided into 17 subbasins, as shown

in Figure 2. These subbasins were screened for potential

impacts on drainage based on the number of proposed

turbine sites in the subbasin, the length of proposed access roads, and the existing

hydrologic characteristics. Subbasin M was selected for the initial analysis based on this

criteria.

The National Resources Conservation Service Technical Release 55 - Urban Hydrology

for Small Watersheds (TR-55) graphical peak discharge method was selected for the

hydrologic analysis of the subbasin. TR-55 provides an approach to estimating peak

flows while accounting for slope, soils, and watershed shape for areas up to 2000 acres.

This methodology is accepted by the Illinois Department of Natural Resources – Office

of Water Resources and other regulatory agencies for determining peak flows. Two

analyses were performed, one for existing conditions and one for proposed conditions.

ProjectLocationProjectLocation

Figure 1 - Location Map



Figure 2 - Project Site Drainage Subbasin Delineation



Analysis

Descriptions of the parameters developed for use in the TR-55 analysis are presented in

the following paragraphs. The values determined for subbasin M are included.

Topography and slope are used to characterize the subbasin. This information was

obtained from detailed topographic mapping, shown in Figure 3 with proposed

improvement locations in Subbasin M.

Hydrologic Soil Groups classify soils according to their minimum infiltration rate. Soils

have been categorized into one of four groups. Based on the soils associations shown on

Figure 4 and with verification for Subbasin M from the LaSalle County Soil Survey, a

hydrologic soil group C was determined.

Figure 3 – Subbasin M Topography and Delineation



Land use defines the ground cover needed to calculate runoff. Subbasin M was divided

into 5 land uses – cropland, other farmland, home sites, non-agricultural, permanent

pasture and road right-of-way. These areas were measured and used in the runoff curve

number calculations included in Appendix A.

SubbasinSubbasin

Figure 4 –Soils Map



Time of concentration ( Tc ) is the time for runoff to travel from the hydraulically most

distant point of the watershed to the outlet. Factors which affect the time of

concentration include surface roughness, channel shape and flow patterns, and slope.

Aerial photographs, shown in Figure 5, are used in this analysis. Calculations are

included in Appendix A.

Runoff curve number (CN) is an index combining hydrologic soil group and land use

factors (cover and condition). The major factors that determine CN are the hydrologic

soil group (HSG), cover type, treatment, hydrologic condition, and antecedent runoff

condition. Calculations are included in Appendix A.

Rainfall depths in inches are obtained from Bulletin 70 - Frequency Distributions of

Heavy Rainstorms in Illinois. For LaSalle County, these amounts are 4.47 inches for the

10-year, 24-hour and 7.58 inches for the 100-year 24-hour storm event. A Type II

rainfall distribution was assumed for both existing and proposed conditions. Rainfall

data is shown in Appendix A.

Figure 5 - Aerial Photo of Subbasin M



Conservative, “worst-case” values were determined for these parameters in the context of

the data provided. For example, values for slopes were rounded up (steeper) and lower

coefficients for surface roughness were chosen to show the maximum potential change.

Results

Table 1 summarizes the parameters used for the existing and proposed conditions

hydrologic analyses and the resulting peak flows calculated. The area impacted by the

construction of the facilities is small compared to the total subbasin area (16 of the 1,457

acres), so the changes in surface roughness, channel shape, flow patterns and slope for

proposed conditions have minimal impact on the subbasin flows.

Condition Rainfall Frequency

Drainage Area, acres

Hydrologic Soil Group

Tc, minutes

Runoff Curve Number

Peak Flows, cfs

10-yr 1,457 C 2.00 80 1,238 Existing

100-yr 1,457 C 1.98 81 2,678

10-yr 1,457 C 2.00 80 1,290 Proposed

100-yr 1,457 C 1.98 81 2,740

Table 1- Hydrologic Analysis Parameter and Results

Table 1 shows the peak flows values calculated. The increases in peak flows from

existing conditions to proposed conditions are 52 cfs (4%) for the 10-year storm and 62

cfs (2.3%) for the 100-year storm. These differences are well within the margin of error

for this methodology and are not significant.

The data developed for this subbasin can be used to determine the impact of the proposed

development on other subbasins in the project area. Since the parameters affecting the

flow rate calculation are similar throughout the area, and the proposed changes are of

similar magnitude, it can be concluded that similar differences in peak flows would be

calculated in the other subbasins.



Conclusion

Based on the analysis performed for existing and proposed conditions using a

conservative approach in developing method parameters, the maximum peak flow

increases resulting from construction of the turbines and access roads are less than 6%

and are not significant when compared to the accuracy of the method used. Also,

because the facilities are generally located at or near ridges and construction will disturb

a small area, the impact on drainage patterns will be insignificant.

Care should be taken during construction to minimize the impacts on the drainage

system. Stormwater best management practices should be used on the project site as

outlined in the Storm Water Pollution Prevention Plan to control erosion, minimize the

discharge of sediment-laden runoff, and maintain drainage system capacity.


HDR Engineering, Inc. Update

September 2008 Update

An expansion of the Grand Ridge Wind Energy project has been proposed. This

expansion will construct two additional phases of the project. The locations of subbasins

in all phases are shown in Figure 2a below.

Figure 2a - Project Site Drainage Subbasin Delineation

The total areas for Phases II and III were compared to the increase in impervious area

resulting from construction of the energy facilities. For Phase II, the percent increase in

impervious area will be 0.3% (12.2-acre increase for the 4,020-acre Phase II area). For

Phase III, the percent increase in impervious area will be 0.36% (36.9-acre increase for


HDR Engineering, Inc. Update

the 10,211-acre Phase III area). These increases are less than the 1.0% increase

calculated for Phase I (16-acre increase for the 1,457-acre Phase I area).

The data developed for Phase I can be used to determine the impact of the proposed

Phases II and III. Since the parameters affecting the flow rate calculation are similar

throughout the area, and the proposed changes are of similar magnitude, it can be

concluded that similar differences in peak flows would be calculated in adjacent

subbasins in Phases II and III. These peak flow increases and impacts on drainage

patterns will be insignificant.

CERTIFICATION

This certification documents that this update to the “Drainage Study – Grand Ridge

Wind Energy Project,” prepared by Melcy Curth Pond, a licensed professional engineer

in the State of Illinois, demonstrates that no substantial increases in runoff or change in

drainage patterns are anticipated as a result of construction of the project.


HDR Engineering, Inc. A-1

Appendix A

Bulletin 70 Rainfall Data

Existing Conditions TR-55 Worksheets

Proposed Conditions Tr-55 Worksheets



Bulletin 70 Rainfall Data

Source - Huff, F. A., and J. R. Angel, 1989. Rainfall Distributions and Hydroclimatic Characteristics of Heavy Rainstorms in Illinois, (Bulletin 70), Illinois State Water

Sectional Mean Frequency Distributions for Storm Periods of 5 Minutes to 10 Days and Recurrence Intervals of 1 to 100 Years in Illinois.

Amounts are in inches.

Section Duration 1-year 2-year 5-year 10-year 25-year 50-year 100-year

02 10-day 4.12 4.95 6.04 6.89 8.18 9.38 11.14 02 5-day 3.25 3.93 4.91 5.70 6.93 8.04 9.96 02 72-hr 2.93 3.55 4.44 5.18 6.32 7.41 8.78 02 48-hr 2.70 3.30 4.09 4.81 5.88 6.84 8.16 02 24-hr 2.51 3.04 3.80 4.47 5.51 6.46 7.58 02 18-hr 2.30 2.79 3.50 4.11 5.06 5.95 6.97 02 12-hr 2.18 2.64 3.31 3.89 4.79 5.62 6.59 02 6-hr 1.88 2.28 2.85 3.35 4.13 4.85 5.68 02 3-hr 1.60 1.94 2.43 2.86 3.53 4.14 4.85 02 2-hr 1.48 1.79 2.24 2.64 3.25 3.82 4.47 02 1-hr 1.18 1.43 1.79 2.10 2.59 3.04 3.56 02 30-min 0.93 1.12 1.41 1.65 2.04 2.39 2.80 02 15-min 0.68 0.82 1.03 1.21 1.49 1.75 2.05 02 10-min 0.55 0.67 0.84 0.98 1.21 1.42 1.67 02 5-min 0.30 0.36 0.46 0.54 0.66 0.78 0.91



Runoff Curve Number Worksheet – Existing Conditions



Time of Concentration Worksheet – Existing Conditions



Peak Discharge Worksheet – Existing Conditions



Runoff Curve Number Worksheet – Proposed Conditions



Time of Concentration Worksheet – Proposed Conditions



Peak Discharge Worksheet – Proposed Conditions


Storm Water Pollution Prevention Plan Appendix C October 2008

Appendix C: Revision Documentation

Revision Date Comments

00 September 2007 Original

01 August 2008Revised SWPPP to incorporate Phase IIand Phase III

02 October 2008 Final draft.


Storm Water Pollution Prevention Plan Appendix D October 2008

Appendix D: Erosion Control Details

Check Dams SE ... 4

-f--------,--r="'"',- -!-J4-

ELEVATION

---------r ~

LO

~~~~~~~~~~~~~~~.,-

Flow ....

8" to 12"diameter rock

TYPICAL ROCK CHECK DAM SECTIOI\J

ROCK CHECK DAMNOT TO SCALE

1'0

o x....... 0

-1--'2'+-

~\.'\.~~~~~~"'-- ....---l LO,-

GRAVEL BAG CHECK DAM ELEVATIONNOT TO SCALE

January 2003 Califomia Stormwater BMP HandbookConstruction

www.cabmphandbooks.com

5 of 5

Earth Dikes and Drainage Swales EC ... 9

line

Stabilizing cover,when needed.24"

II2: 1 (H: V) slopeor flatter

TYPICAL DRAINAGE SWALENOT TO SCALE

Compacted fill

NOTES:

1. Stabilize inlet, outlets and slopes.

2. Properly compact the subgrade.

Compacted fill

Stabilizing cover,when needed

line

TYPICAL EARTH DIKENOT TO SCALE

January 2003 California Stormwater BMP HandbookConstruction


7 of 7

NOTES:1. Slope surface shall be free of rocks, clods, sticks

and gross. Mats/blankets shall have good soil contact.

2. Loy blankets loosely and stake or staple to maintaindirect contact with the soil. Do not stretch.

3. Install per manufacturer's recommendations

EC ... 7

2"3"

I,ISOMETRIC VIEW

Geotextiles and Mats

6" X 6~

anchor trench

WET SLOPE LININGNTS

10 of 11

TYPICAL INSTALLATION DETAIL

CaliFornia Storrnwater BMPHandbookConstruction


January 2003

(

Geotextiles and Mats EC ... 7

intervals

ISOMETRIC VIEWNTS

4" X 4"anchor shoe

6"

INTERMITTENT CHECK SLOTNTS

LONGITUDINAL ANCHOR TRENCHNTS

January 2003

NOTES:1. Check slots to be constructed per manufacturers specifications.2. Staking or stapling layout per manufacturers specifications.3. Install per manufacturer's recommendations

TYPICAL INSTALLATION DETAIL

California storrrwater BMP HandbookConstruction


11 of 11

SE ... 3 Sediment Tra~

NOTE:Size spillway to conveypeak design flow.

TYPICAL OPEN SPILLWAY

Outlet pipe or usealternative open

Earth embankmen t

Outlet protection

All slopesl:3 (V: H)or flatter

,':.

5'-0" Min~

Watertight connection

Excavate, if necessaryfor storage

Flow

li~". Min

Perforate riser

6 of 6

EMBANKMENT SECTION THRU RISER

TYPICAL SEDIMENT TRAPNOT TO SCALE

Califomia Stormwater BMP HandbookConstruction


January 2003

tn

tnITtI

.....J.

.....-C""t'

."CD:1oCD

See note 10

LEGEND

Tamped backfill

Slope direction

Direction of fiow

Fabric

Silt fence

~

Toe of slope

~

SECTlm~ C-C

CROSS BARRIER DETAIL!

Optional main tenanceopening detail

SILT FENCE

-{ II Fabric

J8l--I<

/

-J Crass barrier.

~

/

1. Construct the lenglh of each reach so that the change In boseelevation along the reach does nat exceed 1/3 the height of the linearbarrier, In no case sholl the reach length exceed 500',

2. The lost 8'- 0" of fence sholl be turned up slope.

3. Stoke dimensions are nominal.

5. Stokes shall be spaced at 8'-0· maximum and sholl bepositioned on downstream aide of fence.

4. Dimension may vary to fit field condition.

5. Stokes to overtop and fence fabric to fold around each stokeone full turn. Secure fabric to stoke with 4 staples.

7. Stokes shall be driven tightly together to prevent potentialflow-through of sediment at joint. The tops of the stokessholl be secured with wire.

8. For end stoke, fence fabric sholl be folded around two stakesone full tum and secured with 4 staples.

g. Minimum 4 staples per stoke. Dimensions shown are typical.

10. Cross barriers sholl be a minimum of 1/3 and a maximum of 1/2 theheight of the linear barrier.

11. Maintenance openings shall be constructed in a manner to ensuresediment remains behind silt fence.

12.. Joining sactlona sholl not be placed at sump locations.

13. Sandbag rows and layers sholl be offset to eliminate gaps.

NOTES

Cross barrier(See nole 10)

.....Q,CO

'Ol~COl

.:<Noow

()Ol

i§i:Jiii'

o (f)

s 0 Q3 0 ~-o1;J:::r q OlOl C ~:J o CDg:~. ;8 s s:A "til

I8 Ol~3 0-cr00A

(l)

g,co

(J)rr1I

....,},

(J)......-t""I'."CD::J(")

CD

Slake

Fabric

LEGEND

Tamped backfillSlope directionDlrectlan of flow

STAPLE DETAIL

(SEE NOTE 9)

~

~-'

.4 ~1/18"' --:]]-:Tdlameler ~~

~~

~

'Toe of slope-----"-'-;IL.;--,\-,----£/ _

OPTIONAL MAINTENAtJCE OPENING DETAIL(SEE NOTE 11)

12)

Slit fence

END DETAIL

Fabric ,a' _ ~'{."' 2"(~. """.~ (~. ".(:~ .",.

END STAKE DETAIL (TOP VIEW)

JOINING SECTION DETAIL (TOP VIEW)

Slake 8

Fabric section A(See notes S, 7 &. 12)

rEnd stokeI~ (Sec note 2)

.ke

'0..,

..,

See detail A

DETAIL A

SECTION A-A

-(h-, 2" X 2"

SUi fence.~ Vwood etcfabric <,

"~. ",. . ~,. .~"

'"

I 5"

-L.t'-

Slope

Noow

1if:JC(\)

.:<

n~

~~:30;'

0 (flIll n aCT 0 -,

:3:J ~"DUl::Tq (\)III C ,.,.:J <1 CDCl. .... -,CT -, CO

8 s s" -0Ul

:r:8 III

:J:3 o,

CT00

"

....-....

Stabilized Construction Entrance/Exit TC-1

Crushed aggregate greater than 3"{but smaller than 6"

J i,,~ilter fobf.ic .

~~~~~Ol12 " Min, unless otherwisespecified by a soils engineer

SECTION B-BNTS

>«3o«~I

ow>«0..

o~If(J)

xw

MatchExistingGrode

NOTE:Construct sediment barrierand channelize runoff tosediment trapping device

cui vert

50' Min

or four times the circumferenceof the largest construction vehicle tire,

whichever is greater

PLANNTS

Width osrequired toaccomodateanticipatedtraffic

January 2003 CaliFornia Stormwater BMP Handbook 5 of 6Construction


Stabilized Construction Entrance/Exit TC-1

Crushed aggregate greater than 3"but smaller than 6·.

OrigInal

---.L~~/1.2(:i&!:tl:.~Q'&~~IQC~~J---=.:.-grqde12" Min, unless otherwisespecified by a soils engineer

Crushed aggregate greater than 3·but smaller than 6".

Corrugated steel panels

12" Min, unless otherwisespecified by a soils engineer

SECTION A-ANOT TO SCALE

Filter fabric

or four times the circumferenceof the largest construction vehicle tire,

whichever is greater

NOTE:Construct sediment barrierand channelize runoff tosediment trapping device

<,,

>-'«)3:10'«I0,0::,

0 1

~i«'o..!0!~If-'tfJlxiw,

I,

MatchExistingGrade

6 of 6

Sediment trappingdevice

..du'+,'.-101

1I

Corrugated steel panelsA B

?4' min

50' min

PLANNTS

California Stormvvater BMP HandbookConstruction


January 2003

(

EC ... 10_______V.....e.....l__o__c.....it...:llY;;.....""D.....i__s.....s......Iipation Devices

Pipe outlet to welldefined channel

4do (min)

A

PLAN VIEW

Key in 6"-9"recommended forentire perimeter

SECTION A-A

For largeror higher flows consult a RegisteredCivilEngineerSource:USDA-SCS

Pipe Diameter Discharge Apron Length, La Rip Rap 050 Diameter

inches ft3 / s fl:Min

inches

5 10 412

10 13 6

10 10 6

20 16 818

30 23 12

40 26 16

30 16 8

40 26 824

50 26 12

60 30 16..

(4 of 4 California Stormwater BMPHandbook

Constructionwww.cabmphandbooks.com

January 2003


Storm Water Pollution Prevention Plan Appendix E October 2008

Appendix E: Inspection Log

Initialsof

Inspector

Typeof

Inspection

Dateof

Inspection

Timeof

Inspection

Areas to be Inspected*

Comments:Routine w

ee

kly

24 h

ours

after

a r

ain

eve

nt

Month

Day

Year

Insig

nific

ant ra

infa

ll, n

oin

spection n

eeded.

AM

PM

All

ero

sio

n a

nd

sedim

ent contr

ol B

MP

Te

mpora

ryS

edim

enta

tion

basin

s

Dra

inage d

itches a

nd

oth

er

wate

rs o

f th

e s

tate

Constr

uction s

ite

exits

Inspectors should enter their initials, type, date, and time of theinspection in the blanks provided. After inspecting each shadedarea*, inspectors should check each box, and make any necessarycomments regarding their findings in the blanks provided below andon the back of this sheet.

* Refer to the Grand Ridge Wind Farm Project SWPPP for guidance during inspection of these areas at the construction site.

Inspecto

rs L

og for

IEP

AN

PD

ES

Constr

uction P

erm

it

Initialsof

Inspector

Typeof

Inspection

Dateof

Inspection

Timeof

Inspection

Additional comments:Ro

utin

e w

ee

kly

24 h

ours

aft

er

a r

ain

event

Mon

th

Day

Ye

ar

AM

PM


Storm Water Pollution Prevention Plan Appendix F October 2008

Appendix F: Incidence of Noncompliance

Information required by this form must be provided to comply with 415 ILCS 5/39(1996). Failure to do so may prevent this form from being processed and could result in your application being denied. This form has been approved by the Forms Management Center. IL 532 2105 WPC 624 Rev. 6/98)

ILLINOIS ENVIRONMENTAL PROTECTION AGENCY CONSTRUCTION SITE STORM WATER DISCHARGE

INCIDENCE OF NON-COMPLIANCE (ION)

PERMITTEE NAME:

LAST FIRST MIDDLE INITIAL AREA CODE +

PHONE NUMBER:

STREET: CITY:

ST:

ZIP:

CONSTRUCTION SITE NAME:

COUNTY: SECTION:

TOWNSHIP:

RANGE:

NPDES PERMIT NUMBER: I L R 1 0

LATITUDE:

DEG.

MIN.

SEC.

LONGITUDE: DEG.

MIN.

SEC.

CAUSE OF NON-COMPLIANCE:

ACTIONS TAKEN TO PREVENT ANY FURTHER NON-COMPLIANCE:

ENVIRONMENTAL IMPACT RESULTING FROM THE NON-COMPLIANCE:

ACTIONS TAKEN TO REDUCE THE ENVIRONMENTAL IMPACT RESULTING FROM THE NON-COMPLIANCE:

SIGNATURE: ____________________________________________ TITLE: DATE:

FOR OFFICE USE ONLY

LOG:

PERMIT NO. ILR10___ ___ ___ ___

MAIL COMPLETED FORM TO: ILLINOIS ENVIRONMENTAL PROTECTION AGENCY DIVISION OF WATER POLLUTION CONTROL (DO NOT SUBMIT ADDITIONAL COMPLIANCE ASSURANCE SECTION #19 DOCUMENTATION POST OFFICE BOX 19276 UNLESS REQUESTED) SPRINGFIELD, ILLINOIS 62794-9276 DATE:


Storm Water Pollution Prevention Plan Appendix G October 2008

Appendix G: Notice of Termination

ILLINOIS ENVIRONMENTAL PROTECTION AGENCY NOTICE OF TERMINATION (NOT) OF COVERAGE UNDER THE GENERAL PERMIT

FOR STORM WATER DISCHARGES ASSOCIATED WITH CONSTRUCTION SITE ACTIVITIES

Please use the tab or arrow keys OWNER INFORMATION

NAME: LAST FIRST MIDDLE

OWNER TYPE:

MAILING ADDRESS:

CITY: STATE: ZIP:

CONTACT PERSON: TELEPHONE

NUMBER: AREA CODE

NUMBER

CONTRACTOR INFORMATION NAME:

LAST FIRST MIDDLE

TELEPHONE NUMBER:

AREA CODE

NUMBER

MAILING ADDRESS: CITY: STATE: ZIP:

CONSTRUCTION SITE INFORMATION FACILITY NAME: OTHER NPDES PERMIT NOS.: I L R 1 0

FACILITY LOCATION:

CITY: STATE: IL ZIP: LATITUDE: LONGITUDE:

COUNTY: SECTION: TOWNSHIP: RANGE:

DATE PROJECT HAS BEEN COMPLETED AND STABILIZED: I certify under penalty of law that disturbed soils at the identified facility have been finally stabilized or that all storm water discharges

associated with industrial activity from the identified facility that are authorized by an NPDES general permit have otherwise been eliminated. I understand that by submitting this notice of termination, that I am no longer authorized to discharge storm water associated with industrial activity by the general permit, and that discharging pollutants in storm water associated with industrial activity to Waters of the State is unlawful under the Environmental Protection Act and the Clean Water Act where the discharge is not authorized by an NPDES permit.

OWNER SIGNATURE: ______ DATE: ___________________________________________ FOR OFFICE USE ONLY

LOG:

PERMIT NO. ILR10 ___ ___ ___ ___

MAIL COMPLETED FORM TO: (DO NOT SUBMIT ADDITIONAL DOCUMENTATION UNLESS REQUESTED)

ILLINOIS ENVIRONMENTAL PROTECTION AGENCY DIVISION OF WATER POLLUTION CONTROL ATTN: PERMIT SECTION POST OFFICE BOX 19276 SPRINGFIELD, ILLINOIS 62794-9276 DATE:

Information required by this form must be provided to comply with 415 ILCS 5/39 (1996). Failure to do so may prevent this form from being processed and could result in your application being denied. This form has been approved by the Forms Management Center. IL 532 2102 WPC 621 Rev. 1/04

Documents

Grand Ridge Wind Farm Project Phase I, Phase II and III Storm