S-780 - 08/23/1994 - STORM WATER MANAGEMENT - Ordinances ORDINANCE 94-SW-EXI-S-7$0
AN ORDINANCE ADOPTING VARIOUS PROVISIONS OF
THE REVISED COUNTY OF DU PAGE COUNTYWIDE STORMWATER
AND FLOOD PLAIN ORDINANCE
WHEREAS, on February 11, 1992, the Village of Oak Brook passed and
approved "An Ordinance Adopting Various Provisions of the County of DuPage
Countywide Stormwater and Flood Plain Ordinance"; and
WHEREAS, the Village of Oak Brook is located almost entirely within
DuPage County, which adopted a Countywide Stormwater and Flood Plain
Ordinance, (the "First County Ordinance") on September 24, 1991, in accordance
with Illinois Compiled Statutes, Chapter 34, paragraph 5-1062; and
WHEREAS, pursuant to the County Ordinance, the Village of Oak Brook, on
November 12, 1991, by Resolution R-544, petitioned to be designated a complete
waiver community for the enforcement of the County Ordinance; and
WHEREAS, on March 24, 1992, the County so designated the Village of Oak
Brook as a complete waiver community for the enforcement of the County
Ordinance; and
WHEREAS, on June 14, 1994, the DuPage County Board adopted a revised
DuPage Countywide Stormwater and Flood Plain Ordinance (the "Second County
Ordinance") which meets current Federal Emergency Management Agency (FEMA)
requirements; and
WHEREAS, as a complete waiver community, the Village is required to
enforce the Second County Ordinance by September 1, 1994, which is the
effective date of the Second County Ordinance; and
WHEREAS, the corporate authorities intend to eventually pass a revised
stormwater ordinance which unifies the provisions of the Second County
ordinance and the provisions of the Oak Brook ordinances into a single
document, but it desires to fulfill the requirements of the Second County
Ordinance in a manner provided hereafter; and
WHEREAS, the Village of Oak Brook, as a complete waiver community, is
required to adopt certain standards contained within the Second County
Ordinance as the minimum standards effective within its territorial
jurisdiction although it may impose higher standards; and
NOW, THEREFORE, BE IT ORDAINED BY THE PRESIDENT AND BOARD OF TRUSTEES OF
THE VILLAGE OF OAK BROOK, DU PAGE AND COOK COUNTIES, ILLINOIS as follows:
I
Section 1: That the provisions of the preamble hereinabove set forth
are hereby adopted as though fully set forth herein.
Section 2: In order to assure that the provisions of the Oak Brook
Village Code pertaining to stormwater management and those which may be
adopted in the future are consistent with and at least as stringent as the
Ordinance 94-SW-EXI-S-7$0
Adopting Various Provisions
of the Revised Countywide
Stormwater and Flood Plain
Ordinance
Page 2
Revised DuPage County Stormwater Management Plan and the County Ordinance
which was adopted by the County Board on June 14, 1994 (Second County
Ordinance) , the corporate authorities do hereby adopt those provisions of the
Second County Ordinance which are attached hereto and made a part of this
Ordinance as Appendix A. These provisions are not adopted by reference, but,
rather, are adopted as a specific and integral part of this Ordinance, and are
attached hereto. They provisions adopted by this section shall be in full
force and effect and shall supersede any other ordinances of the Village of
Oak Brook with which they are inconsistent which are less stringent than
the terms of this Ordinance.
Section 3: That this ordinance shall be in full force and effect
immediately upon its passage, approval and publication in pamphlet form in the
manner provided by law.
PASSED THIS 23rd day of August, 1994.
Ayes: Trustees Bartecki, Calzaretta, Kenny and McInerney
Nays: None
Absent: Trustees Payovi h and Shumate
Abstain: TTnnP
APPROVED THIS 91,d day of August, 1994.
�., •`mil f . 4 - / �
Village President
ATTEST: -�
Village Clerk
Approved as to Form:
wGLr�� �•L���,
Village Attorney
Published 9-26-9A €erm
Date Paper
Not Published
APPENDIX A
The following sections of the revised DuPage County Countywide Stormwater and
Flood Plain Ordinance are attached as Appendix A:
Articles 2, and 7 through 17
ARTICLE 2 . DEFINITIONS.
Sec. 15-16. Interpretation of Terms and Words .
The terms and words used in this Ordinance or in a waiver community
ordinance shall be interpreted as follows:
1 . Words used in the present tense include the future tense; and
2. Words used in the singular number include the plural number and
words used in the plural number include the singular number; and
3 . The words "shall", "will", and "must" are mandatory, not
permissive; and
4 . All distances, unless otherwise stated, shall be measured
horizontally.
5. The phrases "Director or the Administrator", "Director, or the
Administrator in a waiver community", or "Director, or
Administrator in a complete waiver community", refer to the
individual responsible for the enforcement in the specific area.
Sec. 15-17 . Definitions .
Within the context of this Ordinance or a waiver community ordi-
nance, the following words and terms shall have the meanings set
forth except where otherwise specifically indicated. Words and
terms not defined shall have the meanings indicated by common
dictionary definition.
Administrator. The person administering the implementation and
enforcement of this Ordinance; or, the person administering the
implementation and enforcement of a community ordinance in a waiver
community.
Applicable Engineering Practice. Procedures, methods, or materials
recommended in standard engineering textbooks or references as
suitable for the intended purpose.
Applicant. A person applying for a Stormwater Management Permit,
which person must be either the owner or the developer of the land
specified in the application.
ARTICLE 2. DEFINITIONS
Sec. 15-16 through 15-17 - 7 -
Appropriate Use. The only uses of the regulatory floodway that may
be considered for a stormwater permit. See Section 15-133 of this
Ordinance.
Base Flood. The flood having a one percent probability of being
equalled or exceeded in a given year.
Base Flood Elevation. The height of the base flood in relation to
the National Geodetic Vertical Datum of 1929.
Best Management Practices. Design, construction, and maintenance
practices and criteria for stormwater facilities that minimize the
impact of stormwater runoff rates and volume, prevent erosion, and
capture pollutants .
Building. A structure that is constructed or erected partially or
wholly above ground and is enclosed by walls and a roof. The term
"building" includes manufactured homes and includes both the above-
ground and the below-ground portions of the structure.
Certify/Certification. A statement that a proposed development
meets the requirements of this Ordinance.
Committee. The Stormwater Management Committee of the DuPage
County Board, authorized by Public Act 85-905 .
Community. Any municipality, or the unincorporated County, within
DuPage County acting as a unit of local government.
Compensatory Storage. An excavated hydrologically and hydrau-
lically equivalent volume of storage created to offset the loss of
existing flood storage .
CLOMA. A Conditional Letter of Map Amendment. A FEMA comment
letter on a development proposed to be located in, and affecting
only that portion of, the area of flood plain outside the regula-
tory floodway and having no impact on the existing regulatory
floodway or base flood elevations .
CLOMR. A Conditional Letter of Map Revision. A letter that
indicates that FEMA will revise base flood elevations, flood
insurance rate zones, flood boundaries, or floodways as shown on an
effective FIRM or FBFM, after the record drawings are submitted and
approved.
COE . The United States Army Corps of Engineers .
ARTICLE 2. DEFINITIONS
Sec. 15-16 through 15-17 - 8 -
Complete Waiver. The authority granted to a community pursuant to
Articles 3, 4, and 5 of this Ordinance whereby a community acquires
complete jurisdiction over reviewing applications for and granting
Stormwater Management Permits.
County. The County of DuPage, Illinois .
Critical Wetlands. Wetlands of the highest value by virtue of one
or more high ranking characteristics that result in a uniquely
valuable environment. See Sections 15-134 and 15-135 of this
Ordinance.
Dam. Any obstruction, wall embankment, or barrier, together with
any abutments and appurtenant works, constructed to store or direct
water or to create a pool (not including underground water storage
tanks) .
Department. The DuPage County Department of Environmental Con-
cerns, Stormwater Management Division.
Depressional Storage. The existing volume of storage available
under the base flood elevation that may be contained in low lying
areas that have no drainage outlet.
Developer. Any person who undertakes development or permits
development on such person' s behalf.
Development. . Any activity, excavation or fill, alteration,
subdivision, change in land use, or practice, undertaken by private
or public entities that affects the discharge of stormwater; or
substantial improvement to any portion of a building in the flood
plain. The term "development" does not include maintenance of
stormwater facilities .
Director. The Director of the DuPage County Department of Envi-
ronmental Concerns or his or her designee. The Director of the
Department of Environmental Concerns shall be a professional
engineer.
DWR. The Illinois Department of Transportation, Division of Water
Resources .
Elevation Certificates . A form published by FEMA, or its equiv-
alent, that is used to certify the base flood elevation and the
lowest elevation of usable space to which a building has been
constructed.
ARTICLE 2 . DEFINITIONS
Sec. 15-16 through 15-17 - 9 -
Environmental Scientist. A person with a four-year degree in a
life science curriculum in which the emphasis was on ecologic
systems . Examples of such curricula are ecology, botany, or
biology.
FEMA. The Federal Emergency Management Agency.
FBFM. A Flood Boundary and Floodway Map. A flood plain management
map issued by FEMA that depicts, based on detailed analysis, the
boundaries of the base flood, the two tenth percent (0 .2%)
probability flood, and the floodway.
FIRM. A Flood Insurance Rate Map. A map issued by FEMA that is an
official community map, on which map FEMA has delineated both the
special hazard areas and the risk premium zones applicable to the
community. This map may or may not depict floodways .
Flood or Flooding. A general and temporary condition of partial or
complete inundation of normally dry land areas from the unusual and
rapid accumulation or runoff of surface waters from any source .
FHBM. A Flood Hazard Boundary Map. An official map of a commu-
nity, issued by FEMA, on which the boundaries of the flood, mud-
slide or mudflow, or related erosion areas having special hazards
have been designated as Zones A, M, and/or E.
Flood Plain. The area typically adjacent to and including a body
of water where ground surface elevations are at or below a
specified flood elevation.
Floodproof. Additions, changes, or adjustments to structures or
property that prevent the entry of flood water in order to protect
property from flood damage .
Floodproofing Certificate. A form published by FEMA that is used
to certify that a structure is floodproofed to one foot above the
base flood elevation.
Floodway. The channel and that portion of the flood plain adjacent
to a stream or watercourse that is needed to convey the base flood.
Floodway Conveyance. The measure of the flow carrying capacity of
the floodway section and is defined using Manning' s equation
as, K = 1 . 49 ARZ" where "n" is Manning' s roughness factor, "A" is
n
ARTICLE 2 . DEFINITIONS
sec. 15-16 through 15-17 - 10 -
the effective area of the cross-section, and "R" is ratio of the
wetted area to the wetted perimeter.
Hydrology. The science of the behavior of water, including its
dynamics, composition, and distribution in the atmosphere, on the
surface of the earth, and underground.
Interim Watershed Plan. A watershed plan adopted by the County
Board that does not contain all of the elements in Chapter 3 of the
Plan.
LOMA. A Letter of Map Amendment. The official determination by
FEMA that a specific structure is not in a regulatory flood plain.
A LOMA amends the effective FHBM, FBFM, or FIRM.
LOMR. A Letter of Map Revision. A letter from FEMA that revises
base flood elevations, flood insurance rate zones, flood bounda-
ries, or floodway as shown on an effective FHBM, FBFM, or FIRM.
Lake. A natural or artificial body of water encompassing an area
of two or more acres which retains water throughout the year.
Land Surveyor. A person licensed under the laws of the State of
Illinois to practice land surveying.
Maintenance. The selective removal of woody material and accu-
mulated debris from, or repairs to, a stormwater facility so that
such facility will perform the function for which it was designed
and constructed.
Major Stormwater System. That portion of a stormwater facility
needed to store and convey flows beyond the capacity of the minor
stormwater system.
Manufactured Home. A building, transportable in one or more
sections, that is built on a permanent chassis and is designated
for use with or without a permanent foundation when connected to
the required utilities. The term "manufactured home" also includes
park trailers, travel trailers, and other similar vehicles placed
on a site for more than 180 consecutive days.
Minor Stormwater System. That portion of a stormwater facility
consisting of street gutters, storm sewers, small open channels,
swales, and similar facilities designed to convey runoff from the
10-year flood event or less.
ARTICLE 2. DEFINITIONS
Sec. 15-16 through 15-17
NFIP. The National Flood Insurance Program. The requirements of
the NFIP are codified in Title 44 of the Code of Federal
Regulations .
Oversight Committee. A committee appointed by a waiver community
to oversee the implementation and enforcement of the waiver
community' s ordinance .
Parcel. Contiguous land under single ownership or control .
Partial Waiver. Authority granted to a community pursuant to
Articles 3, 4, and 5 of this Ordinance whereby the waiver community
acquires limited jurisdiction over reviewing applications for, and
issuing, Stormwater Management Permits .
Person. Any individual, partnership, , firm, school district,
company, corporation, association, joint stock company, trust,
estate, unit of local government, special taxing district, public
utility, political subdivision, state agency, or any other legal
entity, or owner, or any legal representative, agent, or assign
thereof.
Plan. The DuPage County Stormwater Management Plan, adopted by the
DuPage County Board in September 1989, as amended from time to
time.
Professional Engineer. A person licensed under the laws of the
State of Illinois to practice professional engineering.
Professional Engineering. The application of science to the design
of engineering systems and facilities, using the knowledge, skills,
ability, and professional judgment developed through professional
engineering education, training, and experience .
Professional Engineering Practice. The consultation on, concep-
tion, investigation, evaluation, planning, and design of, and
selection of materials and methods to be used in, administration of
construction contracts for or site observation of an engineering
system or facility, when such consultation, conception,
investigation, evaluation, planning, design, selection, adminis-
tration, or observation requires extensive knowledge of engineering
laws, formulae, materials, practice, and construction methods .
Public Flood Easement. An easement acceptable to the appropriate
jurisdictional body that meets the regulation of the DWR, the
Department, and the community, that provides legal assurances that
ARTICLE 2 . DEFINITIONS
Sec. 15-16 through 15-17 - 12 -
all areas subject to flooding in the created backwater of the
development will remain open to allow flooding.
Record Drawings. Drawings prepared, signed, and sealed by a
professional engineer or land surveyor representing the final "as-
built" record of the actual in-place elevations, location of
structures, and topography.
Regulatory Flood Plain. The flood plain as determined by the base
flood elevation used as the basis for regulation in this Ordinance.
Regulatory Floodway. The floodway that is used as the basis for
regulation in this Ordinance.
Regulatory Wetlands. All wetlands other than critical wetlands .
Riparian Environment. Land bordering a waterway or wetland that
provides habitat or amenities dependent on the proximity to water.
Runoff. The waters derived from melting snow or rain falling
within a tributary drainage basin that exceed the infiltration
capacity of the soils of that basin.
SCS. The United States Department of Agriculture, Soil
Conservation Service.
Soil Scientist. A person with a four-year degree in which the core
curriculum included course work in a minimum of two of the
following fields : soil science, pedology, edophology, and geo-
morphology, and which person has a minimum of two years of field
experience in classifying soils .
Special Flood Hazard Area. An area having special flood, mudslide
or mudflow, or flood-related erosion hazards, and which area is
shown on an FHBM or FIRM as Zone A, A0, Al-30, AE, A99, AH, VO, V1-
30, VE, V, M, or E.
Special Management Areas . Regulatory flood plains or wetlands .
See Article 10 of this Ordinance .
Stormwater Facility. All ditches, channels, conduits, bridges,
culverts, levees, ponds, natural and man-made impoundments,
wetlands, tile, swales, sewers, or other natural or artificial
structures or measures which serve as a means of draining surface
and subsurface water from land.
ARTICLE 2. DEFINITIONS
Sec. 15-16 through 15-17 - 13 -
Stormwater Management Permit. A permit established by this
Ordinance or by a waiver community' s Stormwater Ordinance; and
issued by the Department or a waiver community signifying
acceptance of measures identified for proposed development to
comply with this Ordinance and the Plan.
Structural Engineer. A person licensed under the laws of the State
of Illinois as a structural engineer.
Structure. Anything that is erected or constructed. The term
"structure" includes, without limitation: buildings, tanks, dams,
sewers, constructed channels, outfalls, parking lots, driveways,
roads, sidewalks, and concrete patios.
Substantial Improvement. Any repair, reconstruction, rehabili-
tation, addition, or other improvement of a building, the cost of
which improvement equals or exceeds, individually or in the
aggregate, 50 percent of the fair market value of the building,
determined from the equalized assessed value of the building,
before the start of construction of the improvement or, if the
building has been damaged, before the damage occurred. The term
"cost of improvement" includes the value of volunteer labor and
donated materials . The term "cost of improvement" does not, how-
ever, include either (1) any project for improvement of a building
to correct existing violations of state or local health, sanitary,
or safety code specifications that have been identified by the
local code enforcement official and that are the minimum necessary
to assure safe living conditions or (2) any alteration of a
historic building that will not preclude the building' s continued
designation as a historic building.
Usable Space. Space used for dwelling, storage, utilities, or
other beneficial purposes, including without limitation basements .
Variance. An authorization recommended by the Committee or an
Oversight Committee, and granted by the DuPage County Board or the
corporate authorities of a waiver community, that varies certain
requirements of this Ordinance or a waiver community ordinance in
a manner in harmony with the application of such ordinance' s
general purpose and intent, which variance shall be granted only in
a case where there are practical difficulties or particular
hardships .
Waiver Community. A community that has been granted either a
Partial waiver or a complete waiver from County enforcement of this
Ordinance. See Article 4 of this Ordinance .
ARTICLE 2 . DEFINITIONS
Sec. 15-16 through 15-17 - 14 -
Waiver Community Ordinance. An approved, valid, and effective
stormwater management ordinance of a waiver community. See
Articles 3 and 4 of this Ordinance.
Watershed. All land area drained by, or contributing water to, the
same stream, lake, or stormwater facility.
Watershed Basin Committee. A technical committee established
within a watershed planning area.
Watershed Benefit. A decrease in flood elevations and flood
damages upstream or downstream of the development site.
Watershed Plan. A plan adopted by the County for stormwater
management within a watershed consistent with the requirements in
Chapter 3 of the Plan.
Watershed Planning Area. That area considered in a specific
watershed plan, adopted as part of the Plan, and depicted on the
attached Exhibit 1 .
Watershed Plan Model . The hydrologic and hydraulic model meeting
the standards of the Plan and used in developing a watershed plan.
Wetlands . Areas that are inundated or saturated by surface water
or groundwater at a frequency and duration sufficient to support,
and that under normal circumstances do support, a prevalence of
vegetation typically adapted for life in saturated soil conditions .
Sec. 15-18 through 15-30 . Reserved.
ARTICLE 2. DEFINITIONS
Sec. 15-16 through 15-17 - 15 -
ARTICLE 7 . GENERAL PROVISIONS.
Sec. 15-78 . Scope of Regulation.
1 . This Ordinance or the applicable waiver community ordinance
shall apply to all development of property within the
boundaries of the County, including those under the control of
any governmental entity, agency, or authority.
2 . The provisions of this Ordinance or the applicable waiver
community ordinance shall not apply to:
a. Structures and land uses existing as of the effective
date of this Ordinance except when re-developed; and
b. Proposed developments that are listed on the Official
List of Exempt Developments submitted by each community
in accordance with Section 15-79 of this Ordinance . All
such developments shall meet at least one of the
following criteria:
(1) Building permits for such development were issued
prior to the effective date of this Ordinance; or
(2) Engineering of all stormwater facilities for such
development was submitted to and approved by the
community engineer prior to the effective date of
this Ordinance; or
(3) Annexation agreements or ordinances or other
agreements were recorded or executed prior to the
effective date of this Ordinance which specifically
exempt such development from community codes; or
(4) For other developments, contractual agreements
executed prior to the effective date of this
Ordinance which specifically exempt such
development from community codes; or
(5) Approvals resulting from judicial decrees preclude
application of this Ordinance.
The exemption granted pursuant to this Subsection 2 shall
extend only to the specific improvements authorized by the
building permit, engineering approval, or judicial decrees,
and all specific limitations agreed to in any annexation
ARTICLE 7. GENERAL PROVISIONS
Sec. 15-78 through 15-81 - 29 -
agreement or ordinance or contract shall apply. All other
development not previously specifically exempted shall remain
subject to the provisions of this Ordinance or the applicable
waiver community ordinance.
3 . Nonconforming structures shall not be replaced or enlarged in
any manner unless such replacements or enlargements conform to
the requirements of this Ordinance or the applicable waiver
community ordinance.
Sec. 15-79 . Official Lists of Exempt Developments .
1 . Each community shall submit to the Committee a list of exempt
proposed developments meeting the criteria listed in
Subsection 15-78 .2 of this Ordinance within 60 days after the
enactment of this Ordinance by the County Board. Such list
shall be known as the Official List of Exempt Developments .
2 . An Official List of Exempt Developments may be modified by the
community and resubmitted to the Committee at any time prior
to the effective date of this Ordinance.
3 . Each Official List of Exempt Developments or revisions thereof
shall be approved by an official action of the corporate
authorities of the community, and shall be acknowledged in
writing by the Director on behalf of the Committee .
4 . The Committee may challenge any Official List of Exempt
Developments or any revision thereof submitted by a community
within 60 days after proper submission of such list or
revision. The Committee shall state in writing its reasons
for rejection of any development as not being in accordance
with the provisions of Subsection 15-78 .2 of this Ordinance.
5. The community may add a development to, or delete a
development from, the Official List of Exempt Developments and
resubmit such list to the Committee in accordance with
Subsection 15-79.3 of this Ordinance after the effective date
of this Ordinance if an applicant shows that the criteria
listed in Subsection 15-78 .2 of this Ordinance have been met
or if the community has determined that the criteria listed in
Subsection 15-78 . 2 of this Ordinance have not been met .
6 . Prior to resubmitting its Official List of Exempt Development
to the Committee deleting a development, the community
resubmitting such list with such deletion shall notify the
ARTICLE 7. GENERAL PROVISIONS
Sec. 15-78 through 15-81 - 30 -
affected owner or developer of such deletion in writing and
provide such owner or developer an opportunity to respond to
the community.
Sec. 15-80 . Interpretation.
1 . This Ordinance and the waiver community ordinances shall be
liberally construed to protect the health, welfare, safety,
and the environment of the residents of the County and to
effectuate the purposes of this Ordinance and the waiver
community ordinances and the enabling legislation.
2 . Nothing contained in this Ordinance or the waiver community
ordinances shall be deemed to consent to, license, permit to
locate, construct, or maintain any structure, site, facility
or operation, or to carry on any trade, industry, occupation,
or activity.
3 . When provisions of this Ordinance or any waiver community
ordinance differ from any other applicable statute, law,
ordinance, regulation, or rule, the more stringent provision
shall apply.
4 . The provisions of this Ordinance and the waiver community
ordinances are cumulative and shall be considered additional
limitations on all other laws and ordinances previously
approved or that may hereafter be approved and that concern
any subject matter included in this Ordinance or any waiver
community ordinance .
Sec. 15-81 . Warning and Disclaimer of Liability.
1 . The degree of flood protection provided by this Ordinance or
any waiver community ordinance is considered reasonable for
regulatory purposes and is based on engineering experience and
scientific methods of study.
2 . Increased flooding may result from causes beyond the control
of the County or any community.
3. This Ordinance and the waiver community ordinances do not,
therefore, imply that areas outside the delineated flood plain
or permitted land uses within the delineated flood plain will
be free from flooding and associated damages .
ARTICLE 7. GENERAL PROVISIONS
Sec. 15-78 through 15-81 - 31 -
t
4 . Neither this Ordinance nor any waiver community ordinance
shall be construed or applied in any manner to create lia-
bility on the part of or a cause of action against the County,
any community, or any elected official, officer, agent, or
employee thereof, for any flood damage resulting from reliance
on the provisions of this Ordinance or any waiver community' s
ordinance or from reading or interpreting any map that is part
of this Ordinance or any waiver community ordinance.
Sec. 15-82 through 15-90 . Reserved.
ARTICLE 7. GENERAL PROVISIONS
Sec. 15-78 through 15-81 - 32 -
ARTICLE 8 . ADMINISTRATION.
Sec. 15-91 . Responsibility for Administration.
1 . The Committee, or the Oversight Committee in a waiver com-
munity, shall determine policy related to and direct the
enforcement of this Ordinance or the waiver community' s ordi-
nance, as applicable.
2 . The Director, or the Administrator in a waiver community,
shall have the authority and responsibility for the admin-
istration of this Ordinance or the waiver community' s ordi-
nance, as applicable. In performing his or her duties, the
Director or the Administrator may delegate routine respon-
sibilities to any named designee.
3 . Each community shall remain solely responsible for its
standing in the NFIP and for:
a. Maintaining records and submitting reports required for
the NFIP, including elevation certificates, floodproofing
certificates, and lowest floor elevations; and
b. Notifying the Director, FEMA, DWR, COE, the Illinois
Environmental Protection Agency, and the Federal Environ-
mental Protection Agency of any proposed amendment to
this Ordinance or the waiver community' s ordinance.
Sec. 15-92 . Duties of Director.
The duties and functions of the Director shall include:
1 . Supervising the execution of this Ordinance; and
2 . Supervising the development and revision of the appendices of
the Plan for Committee and County Board approval and taking
such actions as are reasonably necessary and proper to carry
out the purposes and provisions of this Ordinance; and
3 . Certifying flood plain delineations and support documentation
from partial waiver communities for any CLOMR, LOMR, CLOMA,
and LOMA requirement, which certification may be done
concurrent with submittal to DWR or its designee and FEMA; and
4 . Developing and maintaining County-wide regulatory maps; and
ARTICLE 8 . ADMINISTRATION
Sec. 15-91 through 15-96 - 33 -
5. Directing the application and review of complex Stormwater
Management Permits for any community that requests such
assistance; and
6. Performing, in non-waiver communities, the duties which are
assigned to the Administrator in waiver communities; and
7 . Reviewing and certifying proposed developments in special
management areas within partial waiver communities; and
8 . Keeping DWR and FEMA informed of community waiver and ordi-
nance status within 30 days after any changes in status; and
9. Notifying the communities, FEMA, DWR, COE, the Illinois Envi-
ronmental Protection Agency, and the Federal Environmental
Protection Agency of any amendments to the Plan or this
Ordinance .
Sec. 15-93 . Duties of Administrator in Waiver Community.
The duties and functions of the Administrator shall include :
1 . Ensuring that copies of all applicable required federal,
state, and regional permits or County approvals are received
prior to issuing any permits required by the waiver community
ordinance; and
2 . Verifying the existence of special management areas for each
application; and
3 . Reviewing and approving certificates and issuing any permits
or notices required by the waiver community ordinance; and
4 . Notifying the Director and owners of adjacent upstream,
downstream, and potentially affected property, affected state
and federal agencies, and watershed basin communities, and
publishing a notice in a local newspaper of any variance
requested from the provisions of the waiver community
ordinance; and
5. Notifying the Director and all affected persons defined in
Subsection 15-93 . 4 of this Ordinance of any applications for
CLOMR or LOMR; and
ARTICLE 8. ADMINISTRATION
Sec. 15-91 through 15-96 - 34 -
6. Providing for inspections of developments as provided in
Section 15-197 of this Ordinance under the terms of the waiver
community' s ordinance; and
7 . Investigating complaints of violations of the waiver
community' s ordinance; and
8 . Notifying any applicant for a variance that granting the
variance may result in increased rates for flood insurance;
and
9. Notifying the Director and other jurisdictions of alleged
violations of their permit programs; and
10. Notifying violators within regulatory flood plains that
failure to comply with NFIP provisions could make them
ineligible to receive flood insurance; and
11 . Initiating any proceeding necessary to enforce the waiver
community ordinance; and
12 . Encouraging and conducting studies, investigations, and
research relating to the physical, chemical, ecological,
engineering, and other aspects of stormwater management; and
13 . Advising, consulting with, and cooperating with other gov-
ernmental agencies to promote the purposes of this Ordinance
and the waiver community' s ordinance; and
14 . Maintaining for public inspection copies of all applications
and submittals, federal and state permit documents, variation
documentation, CLOMR, LOMR, CLOMA, LOMA, and all other
documents required pursuant to Article 11 of this Ordinance as
directed under the waiver community' s ordinance; and
15. Sending copies of any application for a CLOMR, LOMR, CLOMA, or
LOMA to the Director; and
16. Receiving certification for development in special management
areas from the Director prior to partial waiver community
approval of any CLOMR, LOMR, CLOMA, or LOMA; and
17 . Sending a copy of any petition or request for a variance from
the terms of the waiver community ordinance to the Committee
before any such variance is approved by the Oversight
Committee; and
ARTICLE 8. ADMINISTRATION
Sec. 15-91 through 15-96 - 35 -
i
18 . Submitting the necessary information to the Director relating
to development in order to maintain County-wide regulatory
maps and for supervision of the Ordinance. This includes, but
is not limited to, copies of any Stormwater Management
Permits, CLOMR, LOMR, CLOMA, and LOMA.
19. Maintaining documentation on "cost of improvement" on
buildings in the flood plain, relating to the substantial
improvements requirements of this Ordinance.
Sec. 15-94 . Representative Capacity.
In all cases when any action is taken by the Director or the Admin
istrator, or his or her duly appointed designee, to enforce the
provisions of this Ordinance or the waiver community's ordinance,
such action shall be taken either in the name of and on behalf of
the County or of the waiver community, or the people of the State
of Illinois, and neither the Director nor the Administrator, or his
or her designee, in so acting for the County or the waiver
community shall be rendered personally liable .
Sec. 15-95. Watershed Basin Committee.
1 . A Watershed Basin Committee shall be established in every
watershed planning area throughout the County.
2 . The Watershed Basin Committee may mediate any technical
disputes between the Director and the Administrator or the
communities concerning the technical interpretation or
application of the provisions of this Ordinance or the waiver
community ordinances . Each member of the Watershed Basin
Committee shall have equal voting rights . Recommendations
shall be made by a majority of the members in attendance.
3 . The Watershed Basin Committee shall be comprised of one
professional engineer representing each community in a
watershed planning area and one professional engineer rep-
resenting the Department.
4 . The Watershed Basin Committee shall, if requested by the
Committee or an Oversight Committee, evaluate technical issues
related to a specific application and render an opinion.
ARTICLE 8. ADMINISTRATION
Sec. 15-91 through 15-96 - 36 -
Sec. 15-96. Oversight Committee.
1 . An Oversight Committee shall be established to oversee the
implementation and enforcement of the waiver community' s
ordinance within its jurisdiction.
2 . The corporate authorities of a community, or any represen-
tatives duly appointed by the corporate authorities, may serve
as the Oversight Committee.
3 . The Oversight Committee, when considering appeals or vari-
ances, may request an opinion from the Watershed Basin
Committee on technical issues.
Sec. 15-97 through 15-110 . Reserved.
ARTICLE 8. ADMINISTRATION
Sec. 15-91 through 15-96 - 37 -
ARTICLE 9. REQUIREMENTS FOR STORMWATER AND FLOOD
PLAIN MANAGEMENT.
Sec. 15-111 . General Information.
1 . All developments shall meet the requirements specified for
general stormwater and flood plain development (Section 15-
112) , site runoff (Section 15-113) , riparian environments
(Section 15-115) , sediment and erosion control (Section 15-
116) , and performance security (Article 13) .
2 . All developments shall comply with the site runoff storage
requirements provided in Section 15-114 of this Ordinance in
which:
a. The parcels being developed total three acres or greater
for single family or two family residential subdivision
land uses; or
b. The parcels being developed total one acre or greater for
multiple family or non-residential land uses; or
C. The parcels being developed total one acre or greater for
multiple family or non-residential developments and the
new development totals either individually or in the
aggregate after February 15, 1992 to more than
25, 000 square feet; or
d. The parcels being developed total one acre or greater and
are rights-of-way under the ownership or control of a
unit of government.
3 . Developments shall also meet the more specific requirements of
applicable adopted Watershed Plans or adopted Interim
Watershed Plans, set forth in Sections 15-117, through 15-122 .
4 . All development within special management areas, and sub-
stantial improvements within a flood plain, shall also satisfy
the requirements specified in Article 10 of this Ordinance .
5. All developers shall submit the documents specified in
Article 11 of this Ordinance to verify compliance with these
requirements .
6 . Facilities constructed under the provisions of this Ordinance
or the waiver community ordinance shall be maintained
ARTICLE 9. REQUIREMENTS FOR STORMWATER AND FLOOD PLAIN MANAGEMENT
Sec. 15-111 through 15-122 - 39 -
according to the criteria and guidelines established in the
Plan. Maintenance is the responsibility of the owner of the
land on which the stormwater facilities are constructed unless
the responsibility is assigned, pursuant to Section 15-180 of
this Ordinance, to an entity acceptable to the governmental
unit that has jurisdiction . over such land.
Sec. 15-112 . General Stormwater and Flood Plain Requirements .
The following general stormwater and flood plain requirements shall
apply to all development .
1 . Development shall not :
a. Result in any new or additional expense to any person
other than the developer for flood protection or for lost
environmental stream uses and functions; nor
b. Increase flood elevations or decrease flood conveyance
capacity upstream or downstream of the area under the
ownership or control of the developer; nor
C. Pose any new or additional increase in flood velocity or
impairment of the hydrologic and hydraulic functions of
streams and flood plains unless a watershed benefit is
realized; nor
d. Violate any provision of this Ordinance or any applicable
waiver community ordinance either during or after
construction; nor
e. Unreasonably or unnecessarily degrade surface or ground
water quality.
2 . Analysis and design of all stormwater and flood plain
facilities required for development shall :
a. Meet the standards and criteria established in the Plan
and, if available, - in Watershed Plans or in Interim
Watershed Plans; and
b. Be consistent with the Technical Guidance for the DuPage
Countywide Stormwater and Flood Plain Ordinance for the
Plan; and
ARTICLE 9. REQUIREMENTS FOR STORMWATER AND FLOOD PLAIN MANAGEMENT
Sec. 15-111 through 15-122 - 40 -
c. Be consistent with techniques specified in the Watershed
Plans or the Interim Watershed Plans; and
d. Consider existing and ultimate watershed and land use
conditions, with and without the proposed development .
3 . Stormwater facilities shall be functional before building
permits are issued for residential and non-residential
subdivision.
4 . Stormwater facilities shall be functional where practicable
for single parcel developments before general construction
begins.
5. In areas outside the boundary of the regulatory flood plain,
but within the boundary determined by the two tenth percent
(0.2%) /500-year flood plain, all usable space in new
buildings, or added to existing buildings, or in existing
buildings undergoing substantial improvement shall be elevated
or floodproofed to at least one foot above the base flood
elevation. If the 500-year flood plain is not available, it
shall be determined by an elevation equal to one half (0 . 5)
foot above the base flood elevation. Floodproofing devices
shall be operational without human intervention. If
electricity is required for protection against flood damage,
then there shall be a backup power source that will activate
without human intervention. The floodproofing shall be
certified by a professional engineer.
Sec. 15-113 . Site Runoff Requirements.
1 . Stormwater facilities shall be required and shall be designed
so that runoff exits the site at a point where flows will not
damage adjacent property.
2 . Stormwater facilities shall be designed to conform with the
requirements of Illinois law and the applicable Sections 15-
117 through 15-122 of this Ordinance.
3 . Minor stormwater systems shall be sized to convey runoff from
the tributary watershed under fully developed conditions
consistent with the design requirements of the local
jurisdiction.
4 . Major stormwater systems shall be sized to carry the base
flood without causing additional property damage.
ARTICLE 9. REQUIREMENTS FOR STORMWATER AND FLOOD PLAIN MANAGEMENT
Sec. 15-111 through 15-122 - 41 -
5. Design runoff rates shall be calculated by using continuous
simulation models or by event hydrograph methods . If event
hydrograph methods are used, they must be either HEC-1 SCS
runoff method, TR-20, or TR-55 tabular method. Event methods
must incorporate the following assumptions :
a. Antecedent moisture condition = 2; and
b. Huff or SCS Type II rainfall distribution.
6. Any design runoff rate method shall use Illinois State Water
Survey Bulletin 70 northeast sectional rainfall statistics or
the National Oceanic and Atmospheric Administration continuous
rainfall record from 1949 to present at the Wheaton gage, and
shall calculate flow from all tributary area upstream of the
point of design.
7 . Major and minor stormwater systems shall be located within
easements or rights-of-way explicitly providing for public
access for maintenance of such facilities .
8 . Maximum flow depths on any roadway shall not exceed six inches
during the base flood condition.
9 . Transfers of waters between watersheds shall be prohibited
except when such transfers will not violate the provisions of
Subsection 15-112 . 1 of this Ordinance.
10 . Stormwater facilities for runoff upstream of flood protection
facilities shall provide for conveyance or storage of flood
waters without increased potential for damage to real or
personal property during base flood conditions .
11 . Developments shall, to the extent practicable and necessary,
incorporate the following best management practices into the
site design to minimize increases in runoff rates, volumes,
and pollutant loads :
a. All runoff from rooftops and parking lots, and discharge
from sump pumps, that does not discharge into a site
runoff storage facility shall be directed onto vegetated
swales or filter strips, for a distance of at least
50 feet .
b. Vegetated swales shall be utilized, where appropriate, as
an alternative to storm sewers to promote the
ARTICLE 9. REQUIREMENTS FOR STORMWATER AND FLOOD PLAIN MANAGEMENT
Sec. 15-111 through 15-122 - 42 -
i
infiltration of stormwater and the filtration of
stormwater pollutants .
C. Effective impervious surface area should be limited by
site designs which minimize the area of streets, parking
lots, and rooftops and/or utilize permeable paving
material such as concrete grids in low traffic areas .
d. Other best management practices such as infiltration
basins and trenches (where permeable soils are present)
and filtration basins and sand filters (on highly
impervious or industrial developments) shall be utilized
where appropriate.
e. The practices and procedures established in the Technical
Guidance for the DuPage Countywide Stormwater and Flood
Plain Ordinance for the Plan and as described in the
United States Environmental Protection Agency's "Guidance
Specifying Management Measures for Sources of Nonpoint
Pollution in Coastal Waters", dated January 1993 .
12 . Developments shall incorporate all best management practices
as may be required pursuant to the United States Clean Water
Act, 33 U.S .C. §§ 1251 gt sea. , as amended.
Sec. 15-114 . Site Runoff Storage Requirements (Detention) .
1 . Maximum site runoff storage requirements shall be consistent
with the information, procedures, and requirements of the
applicable Sections 15-117 through 15-122 of this Ordinance,
except as limited by the provisions of Subsection 15-114 .2 of
this Ordinance.
2 . If no release rate, or a greater release rate than identified
below, is specified in the applicable Sections 15-117 through
15-122 of this Ordinance, then sufficient storage shall be
provided such that the probability of the post development
release rate exceeding 0. 1 cfs/acre of development shall be
less than one percent (1 .0%) per year. Design runoff volumes
shall be calculated using continuous simulation or event
hydrograph methods .
3 . If event hydrograph methods are used to calculate design
runoff volumes, they must be either HEC-1 SCS runoff method
with outlet routing option, TR-20 with outlet control routing
ARTICLE 9. REQUIREMENTS FOR STORMWATER AND FLOOD PLAIN MANAGEMENT
Sec. 15-111 through 15-122 - 43 -
option, or TR-55 tabular method. Event methods shall
incorporate the following assumptions:
a. Antecedent moisture condition = 2; and
b. Huff or SCS Type II rainfall distribution; and
C. Twenty-four (24) hour duration storm with a one percent
(1 . 0%) probability of occurrence in any one year as
specified by Illinois State Water Survey Bulletin 70
northeast sectional rainfall statistics .
4 . If continuous simulation methods are used, design runoff
volumes shall be calculated using the Wheaton National Oceanic
and Atmospheric Administration. rainfall record from 1949 to
present .
5. For sites where depressional storage exists and the unde-
veloped release rate is less than the maximum release rate in
Subsection 15-114 . 2 of this Ordinance, the developed release
rate and corresponding site runoff storage volume shall be
based on the existing undeveloped release rate for the
development site.
6. All hydrologic and hydraulic computations must be verified
under the full range of expected downstream water surface
elevations, from low flow through the base flood elevation.
7 . Responsibility for maintenance of all storage facilities shall
be designated on the plat of subdivision or other recorded
documents .
8 . Storage facilities shall be designed and constructed with the
following characteristics :
a. Water surface depths two feet above the base flood
elevation will not damage the storage facility.
b. The storage facilities shall be accessible and easily
maintained.
C. All outlet works shall function without human inter-
vention or outside power and shall operate with minimum
maintenance.
d. Storage facilities shall facilitate sedimentation and
catchment of floating material .
ARTICLE 9. REQUIREMENTS FOR STORMWATER AND FLOOD PLAIN MANAGEMENT
Sec. 15-111 through 15-122 - 44 -
e. Storage facilities shall minimize impacts of stormwater
runoff on water quality by incorporating best management
practices.
9. Storage facilities located within the regulatory flood plain
shall :
a. Conform to all applicable requirements specified in
Article 10 of this Ordinance; and
b. Store the required site runoff under all streamflow and
backwater conditions up to the base flood elevation; and
C. Not allow design release rates to be exceeded under any
stream elevation less than the base flood elevation.
10 . Storage facilities located within the regulatory floodway
shall :
a. Meet the requirements for locating storage facilities in
the regulatory flood plain; and
b. Be evaluated by performing hydrologic and hydraulic
analysis consistent with the standards and requirements
for Watershed Plans; and
C. Provide a watershed benefit.
11 . Developments with storage facilities that have off-site flow
tributary to the site either shall provide storage sufficient
to accommodate runoff from the off-site tributary watershed
and the site, or shall store the site runoff and convey off-
site flows through the development.
12 . Storage facilities may be located off-site if the following
conditions are met: -
a. The off-site storage facility meets all of the
requirements of this Article 9; and
b. Adequate storage capacity in the off-site facility is
dedicated to the development; and
C. The development includes provisions to convey stormwater
to the off-site storage facility.
I
ARTICLE 9. REQUIREMENTS FOR STORMWATER AND FLOOD PLAIN MANAGEMENT
Sec. 15-111 through 15-122 - 45 -
Sec. 15-115. Riparian Environments Requirements .
1 . Riparian environments serve the following functions :
a. An aid to slow the rate of stormwater flow and facilitate
runoff volume reduction by encouraging infiltration.
b. Sediment control areas to reduce the impact of urbani-
zation upon surface waters by filtering and assimilating
sediment-laden stormwater runoff.
C. Areas to prevent erosion of stream, lake, pond, or
wetland shorelines .
2 . Any developer proposing development in a riparian environment
shall identify the boundaries by using the first of the
following documents or procedures pertaining at the time of
development:
a. Riparian environments identified in Watershed Plans . If
such plans are not available, use Paragraph (b) .
b. Riparian environments identified in Interim Watershed
Plans . If such plans are not available, use Para-
graph (c) .
C. Site-specific delineation according to the procedures
specified in the Plan. If such site-specific delineation
is not available, use Paragraph (d) .
d. Vegetative areas within 50 feet of the border of critical
wetlands, shoreline of lakes, and streams and rivers
draining more than 640 acres, except for impoundments
constructed for the purpose of site runoff control .
3 . Tree-cutting and vegetation removal shall be minimized within
riparian environments, and revegetation of disturbed areas
shall take place as soon as possible and shall .
4 . Development in a riparian environment shall be initiated only
in accordance with the requirements of this Section 15-115,
the standards of the Plan, and the Technical Guidance for the
DuPage Countywide Stormwater and Flood Plain Ordinance for the
Plan.
5. To the extent practicable, development in a riparian envi-
ronment shall not, without mitigation:
ARTICLE 9. REQUIREMENTS FOR STORMWATER AND FLOOD PLAIN MANAGEMENT
Sec. 15-111 through 15-122 - 46 -
i
a. Adversely change the quantity, quality, or temporal and
areal distribution of flows entering any adjacent
critical wetlands or waters; nor
b. Destroy or damage vegetation that overhangs, stabilizes,
provides overland flow filtration, or shades stream
channels, wetlands, or impoundments that normally . contain
water; nor
C. Adversely affect any ground water infiltration functions.
6. The length of any mitigated channel shall be equal to or
greater than the length of the disturbed channel.
7 . Mitigation measures in riparian environments shall include
required provisions for long-term maintenance.
Sec. 15-116. Sediment and Erosion Control Requirements .
1 . Sediment and erosion control devices shall be functional
before land is otherwise disturbed on the site .
2 . Stockpiles of soil shall not be located in special management
areas .
3 . If a stockpile is to remain in place for more than three days,
then sediment and erosion control shall be provided for such
stockpile.
4 . If the volume, velocity, sediment load, or peak flow rates of
stormwater runoff are temporarily increased during con-
struction, then properties and special management areas down-
stream from such development sites shall be protected from
erosion.
5. Storm sewer inlets shall be protected with sediment trapping
or filter control devices during construction.
6. The surface of stripped areas shall be permanently or tem-
porarily protected from. soil erosion within 15 days after
final grade is reached. Stripped areas that will remain
undisturbed for more than 15 days after initial disturbance
shall be protected from erosion. Temporary sediment and
erosion control measures shall be maintained continuously
until permanent cover is established.
ARTICLE 9. REQUIREMENTS FOR STORMWATER AND FLOOD PLAIN MANAGEMENT
Sec. 15-111 through 15-122 - 47 -
7 . Water pumped or otherwise discharged from the site during
construction dewatering shall be filtered.
8 . Graveled roads, access drives, parking areas of sufficient
width and length, and vehicle wash down facilities if nec-
essary, shall be provided to prevent the deposit of soil from
being tracked onto public or private roadways. Any soil
reaching a public or private roadway shall be removed before
the end of each workday.
9. All control measures necessary to meet the requirements of
this Ordinance or the waiver community ordinance shall be kept
operational and maintained continuously throughout the period
of land disturbance until permanent sediment and erosion
control measures are operational .
Sec. 15-117 . Reserved for Special Requirements in the Salt
Creek Watershed.
Sec. 15-118 . Reserved for Special Requirements in the East
Branch DuPage River Watershed.
Sec. 15-119. Reserved for Special Requirements in the West
Branch DuPage River Watershed.
Sec. 15-120. Reserved for Special Requirements in the Sawmill
Creek Watershed.
Sec. 15-121 . Reserved for Special Requirements in the Des
Plaines River Tributaries Watershed.
Sec. 15-122 . Reserved for Special Requirements in the Fox River
Tributaries Watershed.
Sec. 15-123 through 15-130. Reserved.
ARTICLE 9. REQUIREMENTS FOR STORMWATER AND FLOOD PLAIN MANAGEMENT
Sec. 15-111 through 15-122 - 48 -
i
ARTICLE 10 . SPECIAL MANAGEMENT AREAS.
Sec. 15-131 . Special Management Areas.
1 . Special management areas include regulatory flood plains and
wetlands . Requirements for determining regulatory flood
Plains are specified in Section 15-132 of this Ordinance.
Requirements for delineating wetlands are specified in Section
.}. 15-134 of this Ordinance.
2 . Any development in the regulatory flood plain shall comply
with the requirements of Section 15-133 of this Ordinance in
addition to the requirements of Article 9 of this Ordinance.
3 . Any development in wetlands shall comply with the requirements
of Section 15-135 of this Ordinance in addition to the
requirements of Article 9 of this Ordinance.
4 . All developers shall submit the documents specified in
Article 11 of this Ordinance to verify compliance with the
requirements of this Ordinance or the applicable waiver
community ordinance.
5. All developers shall grant the Director or the. Administrator
consent to record against the title of the property an
informational note stating that a permit to build in a special
management area has been granted. The informational note
shall be printed on the face of the plat or other recorded
document or shall be separately recorded if the project is a
single lot development.
Sec. 15-132 . Requirements for Regulatory Flood Plain and Regu-
latory Floodway Determination.
1 . Any developer proposing development shall identify the
boundaries and elevation of the regulatory flood plain and the
boundaries of the regulatory floodway.
2 . The regulatory flood plain shall be determined by the highest
base flood elevation for a development site at the time of
application as determined by:
a. Flood plain studies in the Watershed Plans .
i
i
ARTICLE 10. SPECIAL MANAGEMENT AREAS f
Sec. 15-131 through 15-136 - 49 -
b. Flood plain studies prepared as part of Interim Watershed
Plans .
C. DWR studies adopted as State Regulatory Maps listed in
Exhibit 2 .
d. Flood Insurance Studies, Flood Insurance Rate Maps, and
Flood Boundary and Floodway Maps published by FEMA listed
in Exhibit 2 .
e. Project specific flood plain studies that meet the
standards established in the Plan and approved by the
Director.
3 . The Director, or the Administrator in a complete waiver commu-
nity, may require the applicant to perform a project specific
flood plain study when no other regulatory flood plain has
been established as provided in Subsection 15-132 . 2 of this
Ordinance. If the drainage area is one square mile or
greater, the study shall also require approval from DWR or
their designee.
4 . Any development located within the regulatory flood plain as
listed in Exhibit 2 may require approval from DWR or its
designee or FEMA or both. Exhibit 2 includes approved DWR and
FEMA studies and maps used for insurance and flood plain
management purposes .
5. The regulatory floodway shall be designated by DWR or its
designee and is shown on maps listed in Exhibit 2 . If a
floodway is not designated on the maps in Exhibit 2, then the
regulatory floodway shall be deemed to be the regulatory flood
plain.
6. The regulatory floodway may be redesignated by a project
specific flood plain study and shall require approval from the
Department and DWR or its designee, and a CLOMR or LOMR from
FEMA.
Sec. 15-133 . Requirements for Development within the Regulatory
Flood Plain.
1 . Development shall preserve effective floodway conveyance such
that there will be no increases in flood elevations, flows, or
floodway velocity, unless any such increases are contained in
a public flood easement and a watershed benefit is provided.
ARTICLE 10. SPECIAL MANAGEMENT AREAS
Sec. 15-131 through 15-136 - 50 -
i 2. Temporary or permanent storage of the following are prohibited
unless elevated or floodproofed to one foot above the base
flood elevation:
a. Items susceptible to flood damage; or
b. . Unsecured buoyant materials or materials that may
cause off-site damage including bulky materials,
flammable liquids, chemicals, explosives,
pollutants, or other hazardous materials; or
C. Landscape wastes.
3. All usable space in new buildings, added to existing build-
ings, or in existing buildings in the flood plain undergoing
substantial improvement shall be elevated to at least one foot
above the base flood elevation.
4 . In areas outside the regulatory floodway but within the flood
plain, maximum flow depths on new parking lots shall not
exceed one foot during the base flood condition and shall be
designed for protection against physical flood damages. Flood
hazard in parking areas below the base flood elevation shall
be clearly posted.
5. New structures other than buildings shall either be elevated
to at least one foot above the base flood elevation or
designed for protection against physical flood damages.
Floodproofing devices shall be operational without human
intervention. If electricity is required for protection
against flood damage, then there must be a backup power source
that will activate without human intervention. The flood-
proofing shall be certified by a professional engineer.
6. New or expansion of existing manufactured home parks or
subdivisions and placement of manufactured homes not in
existing manufactured home parks or subdivisions shall require
that:
a. All stands or pads shall be elevated to or above the base
flood elevation; and
b. Adequate access and drainage shall be provided; and
C. If pilings are used for elevation, applicable design and
construction standards for pilings shall be met; and
ARTICLE 10. SPECIAL MANAGEMENT AREAS
Sec. 15-131 through 15-136 - 51 -
d. Anchoring shall be accomplished in accordance with the
rules and regulations for the Illinois Mobile Home Tie-
Down Act issued pursuant to 77 Ill. Adm. Code § 870 to
resist flotation, collapse, and lateral movement.
7 . Existing structures shall not be enlarged, replaced, or
structurally altered unless the changes meet the requirements
for development. If the changes constitute substantial
improvement to a building in the flood plain, then the entire
building shall meet the requirements for development.
8 . Existing structures may be floodproofed. Floodproofing
devices shall meet the requirements for development in the
flood plain and be operational without human intervention. If
electricity is required, then there must be a backup power
source that will activate without human intervention. The
floodproofing shall be certified by a professional engineer.
Compensatory storage is not required for floodproofing of
existing buildings for flood plain volume displaced by the
building and within the area of 10 feet adjacent to the
building.
9. Any placement of fill, structures, or other materials above
grade in the flood plain shall require compensatory storage
equal to at least 1 .5 times the volume of flood plain storage
displaced and shall be provided at the same incremental flood
frequency elevation as the flood storage displaced.
Compensatory storage shall be operational prior to placement
of fill, structures, or other materials in the regulatory
flood plain. Grading in special management areas shall be
done in such a manner that the existing flood plain storage is
maintained at all times .
10. A copy of an application for a CLOMR, CLOMA, LOMA, or LOMR
including all the required information, calculations, and
documents shall be submitted to the Department concurrent with
the application to FEMA or DWR or its designee.
11 . No filling, grading, dredging, or excavating which changes the
base flood elevation, base flood flow rate or the floodway
boundary shall take place until a CLOMR is issued by FEMA.
12. If a LOMR is required by FEMA, no building construction shall
take place until the LOMR is received.
ARTICLE 10. SPECIAL MANAGEMENT AREAS
Sec. 15-131 through 15-136 - 52 -
13. Any fill required to elevate a building must extend at least
10 feet beyond the foundation before the grade slopes below
the highest base flood elevation.
14 . When a structure is elevated by some means other than filling
in the regulatory flood plain:
a. The useable space of any building and all electrical,
heating, ventilating, plumbing, and air conditioning
equipment shall be located at least one foot above the
highest base flood elevation; and
b. Elevation can be accomplished using stilts, piles, walls,
or other foundations. Areas below the lowest floor that
are subject to flooding shall be designed so that
hydrostatic forces on exterior walls are automatically
equalized by allowing for the entry and exit of
floodwaters and shall be anchored and aligned in relation
to flood flows and adjoining structures so as to minimize
exposure to known hydrodynamic forces such as currents,
waves, ice, and floating debris. Designs for meeting
this requirement shall be prepared, signed, and sealed by
a structural engineer or architect and meet or exceed the
following minimum criteria:
(1) A minimum of two openings having a total net area
of not less than one square inch for every square
foot of enclosed area subject to flooding; and
(2) The bottom of all openings shall be no higher than
one foot above grade; and
(3) Openings may be equipped with screens, louvers,
valves, or other coverings or devices, provided
that such coverings and devices do not impede the
automatic entry and exit of floodwaters; and
C. All materials and structures less than one foot above the
base flood elevation shall be resistant to flood damage.
15. Existing flood storage that is lost due to channel modifi-
cation shall require compensatory storage.
16. Any removal, replacement, or modification of stormwater
facilities that has an existing hydraulic impact shall provide
a watershed benefit and shall require compensatory storage to
mitigate for any potential increases in flow or flood
ARTICLE 10. SPECIAL MANAGEMENT AREAS
Sec. 15-131 through 15-136 - 53 -
elevations . All structures and their associated low entry
elevations within the created backwater of the existing
stormwater facility shall be identified.
17 . The release rate from new or modified storm sewer outfalls
shall meet the requirements of Section 15-114 .2 of this
Ordinance or demonstrate compliance with Section 15-112 .
18 . On-site waste disposal systems shall be located to avoid
impairment to them or contamination from them during flooding.
19. Sanitary sewer systems and water distribution systems shall be
designed to minimize or eliminate infiltration or inflow of
flood waters and discharge of sewage.
20 . Hydrologic and hydraulic impacts of developments located in
the regulatory floodway shall be evaluated using the appli-
cable regulatory model and confirmed using Watershed Plan
models, if available, or models meeting the Plan standards for
watershed planning. The hydrologic and hydraulic impacts of
development shall be evaluated using events representing the
frequency range from 50 percent (2-yr) to one percent (100-yr)
probability of being equalled or exceeded in a given year.
The results of any such evaluation shall be submitted to the
Department.
21 . Any proposed development in the regulatory floodway shall
evaluate the hydrologic and hydraulic impacts for existing and
any future planned watershed conditions .
22 . In the regulatory floodway portion of the regulatory flood
plain, all of the requirements of this Section 15-133 shall
apply to any proposed development, and only the following
appropriate uses shall be considered for permits :
a. Bridges, culverts, and associated roadways, sidewalks,
and railways, necessary for crossing over the floodway or
for providing access to other appropriate uses in the
floodway and any modification thereto; and
b. At or below grade trail systems; and
C. Regulatory floodway regrading, without fill, to create a
positive slope toward a watercourse; and
d. Floodproofing activities to protect existing structures;
and
ARTICLE 10. SPECIAL MANAGEMENT AREAS
Sec. 15-131 through 15-136 - 54 -
i
ie. Stormwater facilities relating to the control of drainage
or flooding; and
f. Above- and below-ground utilities and sanitary and storm
sewer outfalls; and
g. The storage and conveyance of floodwaters; and
h. Erosion control structures and water quality and habitat
structures; and
i . Recreational boating and commercial shipping facilities.
23 . Transition sections within the regulatory floodway are
required for the calculation of effective conveyance including
the modification and the replacement of existing bridge and
culvert structures, or to compensate for lost conveyance for
other appropriate uses. The following ratios shall be used to
calculate transition sections:
a. Water will expand no faster than one foot horizontal for
every four feet of flooded stream length.
b. Water will contract no faster than one foot horizontal
for every one foot of flooded stream length.
C. Water will not expand or contract faster than one foot
vertical for every 10 feet of flooded stream length.
Sec. 15-134 . Requirements for Wetland Delineation.
1 . Any developer proposing development in or near mapped wetland
areas shall identify the boundaries, extent, and quality of
all wetland areas on the subject property. The presence and
extent of wetland areas on the subject property shall be
determined as the result of an on-site wetland procedure.
This procedure shall be conducted in accordance with the
current Federal wetland determination methodology authorized
under Section 404 of the Clean Water Act. A written wetland
delineation/evaluation report shall be prepared in compliance
with all methodologies and definitions set forth in this
Ordinance or the applicable waiver community ordinance.
2 . The approximate location, extent, and relative quality of off-
site wetlands contiguous to the development shall be
identified. The location and extent of contiguous off-site
ARTICLE 10. SPECIAL MANAGEMENT AREAS
Sec. 15-131 through 15-136 - 55 -
wetlands shall be determined by using the first of the
following documents or procedures pertaining at the time of
development:
a. Site specific delineation according to the procedures
specified in the Plan and the Federal Manual for Iden-
tifying and Delineating Jurisdictional Wetlands. If such
delineation is not available, use Paragraph (b) below.
b. Wetlands identified in Watershed Plans . If such plans
are not available, use Paragraph (c) below.
C. Wetlands identified in Interim Watershed Plans . If such
plans are not available, use Paragraph (d) below.
d. Wetlands identified in the Soil Conservation Service
Wetlands Inventory Maps.
3 . Wetlands shall be classified as either critical or regulatory
wetlands. Critical wetlands, because of their sizes, con-
figurations, vegetation, soils, or other characteristics, play
crucial roles in storing or conveying flood waters, con-
trolling erosion, maintaining or enhancing water quality, and
providing habitat for threatened or endangered species .
Critical wetland status shall be assigned to those wetlands
that have been determined to satisfy one or more of the
following:
a. The wetland is identified as a critical wetland in the
County' s wetland inventory; or
b. The wetland is known to possess a Federal or State listed
threatened or endangered species using the methods found
in the Illinois Department of Conservation' s "Guidebook
for Endangered Species Inventories", or Illinois
Department of Conservation has record of their presence
within the last three (3) years; or
C. The plant community within the wetland is determined to
have a mean rated quality (MRQ) of 3 . 5 or higher during
a single season assessment, or alternatively a natural
area rating index (NARI) value of 35. 0 or higher during
a spring, summer, and fall assessment, as calculated by
the Swink & Wilhelm methodology. If both methods are
performed, the NARI value shall prevail as the
determining value; or
ARTICLE 10. SPECIAL MANAGEMENT AREAS
Sec. 15-131 through 15-136 - 56 -
.I
d. The initial wildlife quality value using the Modified
Michigan Department of Natural Resources Method is 5.0 or
higher, or alternatively the mean rated wildlife quality
(MWRQ) is determined to be 8 .0 or higher, as calculated
by the Ludwig wildlife habitat evaluation methodology. If
both methods are performed, the Ludwig value shall
prevail as the determining value; or
e. The ratio of stormwater storage volume to tributary basin
runoff volume to the wetland is 25% or greater, or
alternatively using a method described in Section 15-
114 . 3 or Section 15-114 . 4, the loss of wetland storage
causes adverse offsite impacts that cannot be mitigated
in accordance with Section 15-113 and Section 15-133 . If
both methods are performed, the methods described in
Section 15-114 shall prevail as the determining value; or
f. The wetland is located within an Illinois Environmental
Protection Agency designated wellhead protection area.
g. The existing release rate from the wetland is 0. 1
cfs/acre or less as determined using the method described
in Section 15-114 .3.
4 . All other wetlands not meeting one or more of the critical
wetland criteria shall be assigned a regulatory wetland
status. The final determination of wetland status shall be
made by the Director, or the Administrator in a complete
waiver community, based upon a review of submitted information
and when necessary, upon consultation with outside wetland
authorities.
Sec. 15-135. Requirements for Development in Wetlands .
1 . Development within critical wetlands shall be prohibited,
unless documentation is submitted that conclusively proves
that the presence of critical wetlands precludes all economic
use of the entire parcel, and that no practicable alternative
to wetland modification exists . Based upon a review of the
submitted documentation, and any other available resources,
the Director, or the Administrator in a complete waiver
community, will make a determination as to whether the
proposed critical wetland modification represents the least
amount of wetland impact required to restore an economic use
to the upland portion of the parcel, and whether a permit
should be granted.
ARTICLE 10. SPECIAL MANAGEMENT AREAS
Sec. 15-131 through 15-136 - 57 -
2 . Development within regulatory wetlands shall be prohibited
unless documentation is submitted that conclusively proves
that no practicable alternative to wetland modification
exists . Based upon a review of the submitted documentation,
and other available resources, the Director, or the Admin-
istrator in a complete waiver community, will make a deter-
mination as to whether the proposed wetland modifications will
be permitted.
3. Wetland modification will be permitted only when the proposed
direct environmental impacts to on-site wetlands, and indirect
environmental impacts to off-site wetlands, can be
sufficiently evaluated, minimized, and mitigated, as specified
in this Section 15-135.
4 . Mitigation for developments within a wetland shall provide for
the replacement of the wetland environment lost to development
at a minimum proportional rate of three to one (3 : 1) for
critical wetlands, and one and one half to one (1 . 5: 1 . 0) for
regulatory wetlands. The mitigated wetlands shall be designed
to duplicate or improve the hydrologic, biologic, and economic
features of the original wetland. The Director, or the
Administrator in a complete waiver community, may require a
greater compensation ratio where special wetland functions are
threatened.
5. Mitigation for depressional storage lost in wetland devel-
opment shall be provided in accordance with Subsection 15-
114 . 5 of this Ordinance.
6. Mitigation of loss of storage volume in wetlands shall be
provided for such that the conditions in Section 15-112 are
met .
7 . Mitigation for development impacts within a critical or
regulatory wetland shall take place in the same watershed
planning area as the affected wetland.
8 . Creation of wetlands for the mitigation of development impacts
within a critical or regulatory wetland may take place only
within areas not currently comprised of wetlands .
9. Mitigation of impacts within critical and regulatory wetlands
shall include design, construction, and continued maintenance
of the mitigation measures . See Section 15-197 of this
Ordinance.
ARTICLE 10. SPECIAL MANAGEMENT AREAS
Sec. 15-131 through 15-136 - 58 -
10. The Director, or the Administrator in a complete waiver
community, at his or her discretion may allow an existing
wetland contiguous to a proposed regulatory wetland mitigation
site to be enhanced in exchange for a partial reduction in the
mitigation area required. In no case shall the area
replacement be allowed to fall below a one to one ratio.
11 . Development in a wetland environment shall be initiated only
after a mitigation plan has been approved and adequate
securities are provided as specified in Article 13 of this
Ordinance.
12 . The designs and analyses of all wetland mitigation measures
shall meet the standards of the Plan and shall comply with all
applicable Federal, State, and local regulations regarding
wetland impact and mitigation.
13. The Director, or the Administrator in a complete waiver commu-
nity, shall require that the developer or owner provide the
County or the waiver community with periodic monitoring
reports on the status of the constructed mitigation measures,
and further may require the developer or owner to undertake
remedial action to bring the area into compliance with the
mitigation plan.
14 . Mitigation for development within a wetland begun prior to
issuance of a stormwater permit, or other unauthorized impact
to a wetland, shall presume the wetland disturbed was a
critical wetland requiring mitigation at a minimum rate of
three to one (3 : 1) .
Sec. 15-136. Wetland Banking.
1 . In cases when the Director, or the Administrator in a complete
waiver community, believes that the long term preservation of
existing wetland functions or characteristics is unlikely as
a result of existing or proposed land use practices in
adjacent upland areas, then the Director or the Administrator
may provide that mitigation for development within that
wetland be accomplished wholly or in part through investment
in an established wetland banking program in lieu of
constructing new wetlands .
2 . Such wetland banking shall be allowed only if no net loss of
wetlands results and if the adverse impacts of development in
regulatory or critical wetlands are fully mitigated.
ARTICLE 10. SPECIAL MANAGEMENT AREAS
Sec. 15-131 through 15-136 - 59 -
3 . Wetland banking for development impacts within a critical or
regulatory wetland shall take place within an established
wetland banking program approved by the Committee, or the
Oversight Committee in a complete waiver community, and
located in the same watershed planning area as the affected
wetland, and shall :
a. Include a wetland enhancement, restoration, and con-
struction plan approved by the Committee and the County
Board, or by the Oversight Committee and the corporate
authorities in a waiver community; and
b. Include a capital improvements plan containing an
estimate of the total per acre cost of wetland mitiga-
tion, including operation and maintenance costs; and
C. Include a formula to determine that any investment in a
wetland bank shall be at least equal to the cost of
planning, acquiring of lands, constructing, operating,
and maintaining mitigated wetlands of equivalent or
greater functional value than those lost to development.
4 . All funds deposited in a wetland banking program shall be
maintained in accounts designated solely for a particular
wetland banking project, but at the option of the Director, or
the Administrator in a full waiver community, may be
transferred to the account of another wetland banking project
in the same watershed planning area if that particular wetland
banking project is not constructed within 10 years after the
date on which such funds were deposited.
5. The County Board or the corporate authorities in a waiver
community shall audit annually all funds deposited in wetland
banking accounts and shall account for such funds on a first-
in, first-out basis .
Sec. 15-137 through Sec. 15-145. Reserved.
ARTICLE 10. SPECIAL MANAGEMENT AREAS
Sec. 15-131 through 15-136 - 60 -
ARTICLE 11 . STORMWATER MANAGEMENT PERMITS.
Sec. 15-146. General Requirements.
1 . Any person proposing a development shall obtain a Stormwater
Management Permit prior to development, as provided in Section
15-147 of this Ordinance.
2 . All Stormwater Management Permit review fees shall be paid at
the time of application. See Section 15-152 of this
Ordinance.
3. All submittals that include the design of stormwater facil-
ities, calculations for the determination of the regulatory
flood plain, or calculations of the impacts of development
shall meet the standards of the Plan and shall be prepared,
signed, and sealed by a professional engineer. Such pro-
fessional engineer shall provide an opinion that the technical
submittal meets the criteria required by the Plan and this
Ordinance or the applicable waiver community ordinance.
4 . Any structure subject to a differential water pressure head of
greater than three feet shall be prepared, signed; and sealed
by a structural engineer.
5. The site topographic map, record drawings, and other required
drawings shall be prepared, signed, and sealed by a land
surveyor or professional engineer and tied to the DuPage
County Survey Control Network (National Geodetic Vertical
Datum, 1929 adjustment) .
6. Any proposed development shall secure all appropriate
stormwater management related approvals, including without
limitation a DWR Dam Safety permit if regnired, and other
appropriate federal, state, and regional approvals prior to
the issuance of a Stormwater Management Permit.
7 . All development undertaken by a unit of local government in
the regulatory flood plain where no regulatory floodway has
been designated shall obtain a permit from DWR or its designee
prior to issuance of a Stormwater Management Permit .
8 . Within the regulatory floodway, the following calculations or
analyses shall be submitted to and approved by DWR or
itsdesignee prior to the issuance of a Stormwater Management
ARTICLE 11. STORMWATER MANAGEMENT PERMITS
Sec. 15-146 through 15-153 - 61 -
Permit:
a. Flood damage analyses for the replacement or modification
of existing bridges or culverts; and
b. Hydraulic analyses . of new, modified, or replacement
bridges or culverts; and
C. Analyses of alternative transition sections as required
in Subsection 15-133 .23 of this Ordinance; and
d. Analyses of hydrologically and hydraulically equivalent
compensatory storage.
9. Any and all proposed development not in a special management
area shall be reviewed under the supervision of a professional
engineer meeting the requirements in Section 15-47 . 3 .b.
10. Any and all proposed development within the regulatory flood
plain shall be reviewed under the supervision of a
professional engineer meeting the requirements in Section 15-
47 .3.a. and, in the case of floodway development, certified by
that professional engineer that the proposed development meets
the minimum requirements of this Ordinance.
11 . Any and all proposed development in or near a wetland shall be
reviewed under the supervision of an environmental scientist
meeting the requirements in Section 15-47 . 3 . a (3) . and
certified by that environmental scientist that the proposed
development meets the minimum requirements of this Ordinance.
Sec. 15-147 . Applicability; Required Submittals .
1 . A Stormwater Management Permit shall be required if:
a. The development involves one or more special management
areas; or
b. The development involves a substantial improvement in the
regulatory flood plain; or
C. The development disturbs more than 5, 000 square feet of
ground cover, unless the development solely involves one
or more of the following:
ARTICLE 11. STORMWATER MANAGEMENT PERMITS
Sec. 15-146 through 15-153 - 62 -
(1) Cultivation, conservation measures, or gardening;
or
(2) Installation, renovation, or replacement of a
septic system, potable water service line, or other
utility to serve an existing structure; or
(3) Excavation or removal of vegetation in rights-of-
way or public utility easements for the purpose of
installing or maintaining utilities; or
(4) Maintenance, repair, or at grade replacement of
existing lawn areas not otherwise requiring a
stormwater permit under Ordinance.
2 . In addition to the application requirements provided in
Sections 15-146 and 15-148 of this Ordinance, the following
submittals shall be required:
a. The Stormwater Submittal provided in Section 15-149 of
this Ordinance shall be required for all development
requiring a stormwater permit.
b. The Flood Plain Submittal provided in Section 15-150 of
this Ordinance shall be required for all development
proposed within any regulatory flood plain designated in
Section 15-132 of this Ordinance.
C. The Wetland Submittal provided in Section 15-151 of this
Ordinance shall be required for any development proposed
within a wetland designated in Section 15-134 of this
Ordinance.
Sec. 15-148 . Stormwater Management Permit Application.
The Stormwater Management Permit application shall include all of
the following:
1 . The name and legal address of the applicant and of the owner
of the land; and
2 . The common address and legal description of the site where the
development will take place; and
ARTICLE 11. STORMWATER MANAGEMENT PERMITS
Sec. 15-146 through 15-153 - 63 -
3 . A general narrative description of the development, including
submittals required pursuant to Subsection 15-147 .2 of this
Ordinance; and
4 . Affidavits signed by the land owner and the developer
attesting to their understanding of the requirements of this
Ordinance or the applicable waiver community ordinance and
their intent to comply therewith; and
5. A statement of opinion by a qualified person either denying or
acknowledging the presence of special management areas on the
development site, and the appropriate submittals if the
statement acknowledges the presence of special management
areas; and
6. Copies of other permits or permit applications as required;
and
7 . A stormwater submittal; and
8 . A flood plain submittal, if development is proposed in a flood
plain; and
9. A wetland submittal, if development is proposed in a wetland;
and
10 . An engineer' s estimate of probable construction cost of the
stormwater facilities .
Sec. 15-149. Stormwater Submittal .
1 . The stormwater submittal shall include:
a. A site stormwater plan; and
b. Site runoff calculations; and
C. Site runoff storage calculations if site runoff storage
is required in Section 15-111 .2; and
d. Information describing off-site conditions; and
e. A sediment and erosion control plan; and
ARTICLE 11. STORMWATER MANAGEMENT PERMITS
Sec. 15-146 through 15-153 - 64 -
f. A riparian environment submittal if the proposed
development is within a riparian area as defined in
Section 15-115.2; and
g. Description on how best management practices are
incorporated in the development.
2 . The site stormwater plan shall include:
a. A site topographic map depicting both existing and
proposed contours of the entire site to be disturbed
during development and all areas 100 feet beyond the site
or as required by the Director or the Administrator at a
scale of at least one inch equals 100 feet or less (e.g. ,
one inch to 50 feet) , with a minimum contour interval of
one foot with accuracy equal to 0.5 foot of elevation;
and
b. A plan view drawing of all existing and proposed
stormwater facilities features, at the same scale as the
site topographic map, including all of the following:
(1) Boundaries for watersheds tributary to all sig-
nificant stormwater facilities (i .e. , channels,
bridges, inlets, and the like) , along with the
location of such facilities; and
(2) Major and minor stormwater systems (i .e. , storm-
water pipes, culverts, inlets, and storage and
infiltration facilities, and flooding limits under
base flood conditions for the major stormwater
system) ; and
(3) Roadways, structures, parking lots, driveways,
sidewalks, and other impervious surfaces; and
(4) The nearest base flood elevations; and
C. Design details for all proposed stormwater facilities
(i .e. , major and minor stormwater systems, storage
basins, and outlet works, and the like) ; and
d. A scheduled maintenance program for the stormwater
facilities, including:
(1) Planned maintenance tasks; and
ARTICLE 11. STORMWATER MANAGEMENT PERMITS
Sec. 15-146 through 15-153 - 65 -
(2) Identification of the person or persons responsible
for performing the maintenance tasks as required by
Section 15-180 of this Ordinance; and
(3) A description of the permanent public access
maintenance easements granted or dedicated to, and
accepted by, a governmental entity; and
e. A schedule of implementation of the site stormwater plan.
Upon completion of development, record drawings of the site
stormwater plan shall be submitted to the Director or the
Administrator. Such drawings shall be prepared, signed, and
sealed by a land surveyor or professional engineer and shall
include calculations showing the "as-built" volume of
compensatory and site-runoff storage.
3. The site runoff calculations shall include:
a. Profile drawings of the major and minor stormwater
systems, including cross section data for open channels,
showing the hydraulic grade line and water surface
elevation under the design and base flood condition; and
b. Documentation identifying the procedures, assumptions,
and data used to calculate hydrologic and hydraulic
conditions for sizing both major and minor stormwater
systems .
4 . The site runoff storage calculations shall include:
a. Documentation identifying the procedures, assumptions,
and data used to calculate hydrologic and hydraulic
conditions and to determine the allowable release rate
and related storage volume; and
b. Elevation-area-storage and elevation-discharge data for
storage systems .
5. The riparian environment submittal shall include:
a. A delineation of the riparian environments consistent
with the requirements for riparian environments deli-
neation provided in Subsection 15-115.2 of this Ordi-
nance; and
ARTICLE 11. STORMWATER MANAGEMENT PERMITS
Sec. 15-146 through 15-153 - 66 -
i
b. A mitigation plan meeting the requirements of Section 15-
115 of this Ordinance; and
C. A plan for continued management, operation, and mainte-
nance of the mitigation measures, including designation
of the person or persons responsible for long term
operational management and dedicated funding sources .
6. Information describing the off-site conditions shall include
sufficient information to allow evaluation of off-site impacts
to and resulting from the proposed development. Such
information shall include: '
a. A vicinity topographic map covering the entire upstream
watershed that drains to or through the site and the
entire watershed downstream to the point of known or
assumed discharge and water surface elevation; and
b. A plan view drawing of existing and proposed stormwater
facilities, at the same scale as the vicinity topographic
map, including:
(1) Watershed boundaries for areas draining through or
from the development; and
(2) The location of the development within the water-
shed planning area; and
(3) Soil types, vegetation, and land cover conditions
affecting runoff upstream of the development site
for any area draining through or to the site.
7 . The sediment and erosion control plan shall conform with the
requirements of Section 15-116 of this Ordinance. The
sediment and erosion control plan shall include:
a. A plan and schedule for construction, including site
clearing and grading, placement and maintenance of soil
stabilization controls, and sediment trapping facilities;
and
b. A description of the development, including existing site
land cover and hydrologic conditions, adjacent areas,
soil types, permanent and temporary sediment and erosion
control measures, maintenance requirements, and
calculations; and
ARTICLE 11. STORMWATER MANAGEMENT PERMITS
Sec. 15-146 through 15-153 - 67 -
C. Plan view drawings of existing and proposed site con-
ditions, at the same scale as the site stormwater plan,
including:
(1) Existing contours with drainage patterns and
watershed boundaries; and
(2) Soil types, vegetation, and land cover conditions;
and
(3) Limits of clearing and grading plans; and
(4) Final contours with locations of drainageways and
sediment and erosion control measures; and
d. Design details for proposed sediment and erosion control "
facilities; and
e. A copy of the written opinion, when applicable, of the
Soil and Water Conservation District required under 70
ILCS 405/22 . 02 (1992) ; and
f. Evidence that the sediment and erosion control
installation and maintenance requirements, including both
a list of maintenance tasks and a performance schedule,
are identified and required in the plans and
specifications .
8 . Information describing how best management practices are
incorporated into the site design. Such information shall
include:
a. A description of best management practices that are
incorporated into the site design and how they will
function. Include applicable design criteria such as
soil type, vegetation, and land cover conditions draining
to the best management practice along with appropriate
calculations; and
b. A description of the maintenance requirements .
ARTICLE 11. STORMWATER MANAGEMENT PERMITS
Sec. 15-146 through 15-153 - 68 -
r
Sec. 15-150. Flood Plain Submittal .
The flood plain submittal shall include:
1 . A delineation of the pre- and post-development regulatory
flood plain consistent with the requirements of Section 15-132
of this Ordinance; and
2 . Calculations necessary for meeting the requirements of
Sections 15-132 and 15-133 of this Ordinance; and
3. Topographic survey drawings of all structures located on or
near the site, showing all structures including the lowest
floor, point of entry, and floodproofing elevations . This
survey shall be prepared, signed, and sealed by a land
surveyor or professional engineer.
Sec. 15-151 . Wetland Submittal.
The wetland submittal shall include:
1 . A delineation of the wetlands consistent with the requirements
for wetland delineation provided in Section 15-134 of this
Ordinance; and
2 . A characterization of the wetlands as either critical or
regulatory; and
3. A mitigation plan meeting the requirements of Section 15-135
of this Ordinance; and
4 . A plan for the continued management, operation, and mainte-
nance of the mitigation measures, including the designation of
the person or persons responsible for long term operation and
maintenance and dedicated funding sources .
Sec. 15-152 . Permit Fees .
1 . A review and inspection fee schedule for Stormwater Management
Permits in non-waiver communities, and in special management
areas for partial waiver communities, is attached to this
Ordinance as Schedule A and by this reference incorporated
into this Ordinance.
ARTICLE 11. STORMWATER MANAGEMENT PERMITS
Sec. 15-146 through 15-153 - 69 -
2 . All permit review and inspection fees for development in non-
waiver communities, and in special management areas in partial
waiver communities, shall be payable to the Department .
3 . Waiver communities may set permit review and inspection fees
for developments within their jurisdictions.
Sec. 15-153 Duration and Revision to Permits
1 . Permits expire December 31 of the third year following the
date of permit issuance.
2 . If the permitted activity has been started but is not
completed by the expiration date of the permit, and the
permittee intends to pursue the permitted activity, then the
permittee may submit a written request that the expiration
date be extended. Upon receipt of such request, the Director
or the Administrator may extend the expiration date in maximum
increments of three years for permitted activities outside
special management areas . Expiration dates for permitted
activities in special management areas may be extended in
maximum three year increments provided the activity is in
compliance with the then current requirements of this
Ordinance or the applicable waiver community ordinance .
3 . If, after permit issuance, the permittee decides to revise the
approved plans, the permittee shall submit revised plans to
the Director or the Administrator, along with a written
request for approval . If the Director or the Administrator
determines that the revised plans are in compliance with the
then current requirements of this Ordinance or the applicable
waiver community ordinance, an approval of the revised plans
will be issued.
Sec. 15-154 through 15-165. Reserved.
ARTICLE 11. STORMWATER MANAGEMENT PERMITS
Sec. 15-146 through 15-153 - 70 -
ARTICLE 12 . PROHIBITED ACTS.
Sec. 15-166. Prohibited Acts .
1 . It shall be unlawful for any person to undertake any devel-
opment within the County or a waiver community without first
securing a Stormwater Management Permit as required by this
Ordinance or the applicable waiver community ordinance.
2. It shall be unlawful for any person to violate, disobey, omit,
neglect, or refuse to comply with, or to resist enforcement
of, any provision of this Ordinance or the applicable waiver
community ordinance or any condition of a Stormwater
Management Permit required by this Ordinance or the waiver
community ordinance.
Sec. 15-167 . Prosecution of Violations.
Upon finding the existence of any violation of this Ordinance or a
waiver community ordinance, the Director or the Administrator shall
have the authority and duty to take or direct all actions necessary
or appropriate to abate and redress such violation. The Director
or the Administrator shall also initiate proceedings, as necessary,
to enforce this Ordinance or the waiver community ordinance .
Sec. 15-168 through 15-175. Reserved.
ARTICLE 12 . PROHIBITED ACTS
Sec. 15-166 through 15-167 - 71 -
ARTICLE 13. PERFORMANCE SECURITY.
Sec. 15-176. General Security Requirements .
1 . As security to the County or the waiver community for the
performance by the developer of. the developer's obligations to
complete the construction of any stormwater facilities
required by the Stormwater Management Permit, to pay all
costs, fees, and charges due from the developer pursuant to
this Ordinance or the applicable waiver community ordinance,
and to otherwise faithfully perform the developer' s under-
takings pursuant to this Ordinance or the applicable waiver
community ordinance, the developer shall, prior to issuance of
a Stormwater Management Permit:
a. Post a development security as provided in Section 15-177
of this Ordinance; and
b. Post a sediment and erosion control security as provided
in Section 15-178 of this Ordinance, if a sediment and
erosion control plan is required pursuant to Section 15-
149 of this Ordinance.
2 . The developer shall bear the full cost of securing and
maintaining the securities required by this Section 15-176.
Sec. 15-177 . Development Security.
1 . A development security shall be posted and shall include:
a. A schedule, agreed upon by the developer and the Director
or the Administrator, for the completion of the
construction of any stormwater facilities required by the
permit; and
b. An irrevocable letter of credit, or such other adequate
security as the Director or the Administrator may
approve, in an amount equal to not less than one hundred
ten percent (110%) of the estimated probable cost to
complete the construction of any stormwater facilities
required by the Stormwater Management Permit, which
estimated probable cost shall be approved by the Director
or the Administrator; and
ARTICLE 13. PERFORMANCE SECURITY
Sec. 15-176 through 15-180 - 73 -
C. A statement signed by the applicant granting the Director
or the Administrator the right to draw on the security
and the right to enter the development site to complete
required work in the event that work is not completed
according to the work schedule; and
d. A statement signed by the applicant that the applicant
shall indemnify the community and the Department for any
additional costs incurred attributable to concurrent
activities of or conflicts between the applicant's
contractor and the community's or Department ' s remedial
contractor at the site.
2 . The security required by this Section 15-177 shall be main-
twined and renewed by the applicant, and shall be held in
escrow by the Director or the Administrator until the con-
ditions set forth in this Section 15-177 or other applicable
provision are satisfied.
3 . After approval of record drawings and final inspection by the
Director or the Administrator, not more than ninety percent
(90%) of the security provided for in this Section 15-177 or
other applicable provision may be released. A minimum of ten
percent (10%) of the security shall be retained for a period
of time not to exceed:
a. One year after completion of construction of all
stormwater facilities required by the permit if the
development involves no wetland mitigation; or
b. Five years after completion of construction of all
stormwater facilities required by the permit if the
development involves wetland mitigation.
Sec. 15-178 . Sediment and Erosion Control Security.
1 . If a sediment and erosion control plan is required pursuant to
Section 15-149 of this Ordinance, then a sediment and erosion
control security shall be required. Such a security shall
include:
a. An irrevocable letter of credit, or such other adequate
security as the Director or the Administrator shall
approve, in an amount equal to not less than one hundred
ten percent (110%) of the estimated probable cost to
install and maintain the sediment and erosion control
ARTICLE 13. PERFORMANCE SECURITY
Sec. 15-176 through 15-180 - 74 -
measures, which estimated probable cost shall be approved
by the Director or the Administrator; and
b. A statement signed by the applicant granting the Director
or the Administrator, as applicable, the right to draw on
the security and the right to enter the development site
to complete sediment and erosion control measures in the
event that such measures are not installed and maintained
according to the established schedule.
2 . The security required by this Section 15-178 shall be main-
tained and renewed by the applicant, and shall be held in
escrow by the Director or the Administrator, as applicable,
until the conditions set forth in this Section 15-178 are
satisfied.
3. After establishment of vegetation, removal of all sediment
from stormwater facilities, and final inspection and approval
by the Director or the Administrator, as applicable, one
hundred percent (100%) of the sediment and erosion control
security shall be released.
Sec. 15-179. Letters of Credit.
1 . Letters of credit posted pursuant to Sections 15-176, 15-177,
and 15-178 of this Ordinance shall be in a form satisfactory
to the Director or the Administrator, as applicable.
2. Each letter of credit shall be from a lending institution: (a)
acceptable to the Director or the Administrator, as
applicable, (b) having capital resources of at least ten
million dollars ($10, 000, 000) , or such other amount acceptable
to the Director or the Administrator; (c) with an office in
the Chicago Metropolitan Area; and, (d) insured by the Federal
Deposit Insurance Corporation.
3. Each letter of credit shall, at a minimum, provide that:
a. It shall not be canceled without the prior written
consent of the Director or the Administrator; and
b. It shall not require the consent of the developer prior
to any draw on it by the Director or the Administrator;
and
ARTICLE 13. PERFORMANCE SECURITY
Sec. 15-176 through 15-180 - 75
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C. If at any time it will expire within 45 or any lesser
number of days, and if it has not been renewed, and if
any applicable obligation of the developer for which its
security remains uncompleted or is unsatisfactory, then
the Director or the Administrator may, without notice and
without being required to take any further action of any
nature whatsoever, call and draw down the letter of
credit and thereafter either hold all proceeds as
security for the satisfactory completion of all such
obligations or employ the proceeds to complete all such
obligations and reimburse the County or the waiver
community for any and all costs and expenses, including
legal fees and administrative costs, incurred by the
County or the waiver community, as the Director or the
Administrator shall determine.
4 . If at any time the Director or the Administrator determines
that the funds remaining in the letter of credit are not, or
may not be, sufficient to pay in full the remaining unpaid
cost of all stormwater facility construction or sediment and
erosion control measures, then, within ten (10) days following
a demand by the Director or the Administrator, the developer
shall increase the amount of the letter of credit to an amount
determined by the Director or the Administrator to be
sufficient to pay such unpaid costs. Failure to so increase
the amount of the security shall be grounds for the Director
or the Administrator to draw down the entire remaining balance
of the letter of credit.
5. If at any time the Director or the Administrator determines
that the bank issuing the letter of credit is without capital
resources of at least ten million dollars ($10, 000, 000) , is
unable to meet any federal or state requirement for reserves,
is insolvent, is in danger of becoming any of the foregoing,
or is otherwise in danger of being unable to honor such letter
of credit at any time during its term, or if the Director or
the Administrator otherwise reasonably deems the bank to be
insecure, then the Director or the Administrator shall have
the right to demand that the developer provide a replacement
letter of credit from a bank satisfactory to the Director or
the Administrator. Such replacement letter of credit shall be
deposited with the Director or the Administrator not later
than ten (10) days following such demand. Upon such deposit,
the Director or the Administrator shall surrender the original
letter of credit to the developer.
ARTICLE 13. PERFORMANCE SECURITY
sec. 15-176 through 15-180 - 76 -
6. If the developer fails or refuses to meet fully any of its
obligations under this Ordinance or the applicable waiver
community ordinance, then the Director or the Administrator
may, in his or her discretion, draw on and retain all or any
of the funds remaining in the letter of credit. The Director
or the Administrator thereafter shall have the right to take
any action he or she deems reasonable and appropriate to
mitigate the effects of such failure or refusal, and to
reimburse the County or the waiver community from the proceeds
! of the letter of credit for all of its costs and expenses,
including legal fees and administrative expenses, resulting
from or incurred as a result of the developer's failure or re-
fusal to fully meet its obligations under this Ordinance or
the applicable waiver community ordinance. If the funds
remaining in the letter of credit are insufficient to repay
fully the County or the waiver community for all such costs
and expenses, and to maintain a cash reserve equal to the
required letter of credit during the entire time such letter
of credit should have been maintained by the developer, then
the developer shall, upon demand of the Director or the
Administrator therefor, immediately deposit with the Director
or the Administrator such additional funds as the Director or
the Administrator determines are necessary to fully repay such
costs and expenses and to establish such cash reserve .
Sec. 15-180. Long-Term Maintenance.
Subdivision site runoff storage areas, and stormwater facilities
not located in dedicated rights-of-way, shall be granted or dedi-
cated to and accepted by a public entity, or shall be conveyed by
plat as undivided equal interests to each lot in the subdivision or
to dedicated entities approved by the Director or the Administra-
tor. Included in the dedication shall be a plan for continued
management, operation, and maintenance of the stormwater facility,
including designation of the person or persons responsible for long
term operational management and dedicated funding sources .
1 . If title to the land underlying site runoff storage areas and
stormwater facilities is conveyed by agreement to each of the
lots in the subdivision, then:
a. A covenant on the face of the plat shall be provided; and
b. Subdivision property owners shall establish a property
owner' s association to provide for the maintenance of
site runoff storage areas and stormwater facilities. The
ARTICLE 13. PERFORMANCE SECURITY
Sec. 15-176 through 15-180 - 77 -
association shall be duly incorporated and the property
owners ' association agreement shall be recorded for all
the lots in that subdivision; and
C. The proposed property owners' association by-laws and
declaration shall provide for a long term maintenance
agreement establishing:
(1) Title to the site runoff storage areas and storm-
water facilities to assure that each lot owner is
responsible for a share of the cost of maintenance;
and
(2) Payment of real estate property taxes for such
areas to assure that site runoff storage areas and
stormwater facilities are not sold to satisfy
delinquent taxes; and
(3) Methods of perpetual maintenance, to assure that
the standards of the plan for the site runoff
storage areas and stormwater facilities are met.
Maintenance methods shall be approved by the
Director or the Administrator.
2 . If title to land underlying the site runoff storage areas and
stormwater facilities is conveyed by the plat to a public
entity, then:
a. The face of the plat shall provide, if necessary, that an
easement for public access for construction and
maintenance purposes is reserved to the public entity;
and
b. The public entity shall accept the dedication of the site
runoff storage areas and stormwater facilities and
provide for their perpetual maintenance, including capi-
tal expenses for repair and replacement .
3 . If title to the land underlying the site runoff storage areas
and stormwater facilities is conveyed by the plat to the owner
of the land, then:
a. The face of the plat shall provide an easement for access
and maintenance purposes is reserved to the governmental
unit having local jurisdiction over the stormwater
management plan for the area in which the property is
located; and
ARTICLE 13. PERFORMANCE SECURITY
Sec. 15-176 through 15-180 - 78 -
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b. The face of the plat shall provide the maintenance
responsibilities including the schedule of perpetual
maintenance, repair and replacement; and
C. The face of the plat shall stipulate an agreed right of
the governmental unit having local jurisdiction over the
stormwater management plan for the area in which the
property is located to come onto the property upon thirty
(30) days written notice to correct any condition which
causes the site runoff storage area not to function as
hydraulically and hydrologically planned; and to demand
payment for such costs or to place a lien against the
property for the value of those costs .
Sec. 15-181 through 15-195. Reserved.
ARTICLE 13. PERFORMANCE SECURITY
Sec. 15-176 through 15-180 - 79 -
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ARTICLE 14 . ENFORCEMENT AND PENALTIES.
Sec. 15-196. Inspection and Maintenance Authority.
1 . Pursuant to the authority granted by 55 ILCS 5/5-1104 & 5-1062
(1992) , the County or a waiver community may, after thirty
(30) days written notice to the owner or occupant, enter upon
any lands or waters within the County for the purpose of
inspecting or maintaining stormwater facilities or causing the
removal of any obstruction to an affected watercourse.
2 . The Director or the Administrator shall post the notice in a
prominent place on the premises, and shall send by certified
mail a copy of the notice to the property owner listed in the
County property tax records. The notice shall:
a. State the method by which the stormwater facility will be
cleaned or maintained; and
b. State the date upon which the proposed work will begin;
and
C. Inform the property owner that the property owner may
appeal the commencement date of the proposed maintenance
work.
Sec. 15-197 . Required Inspections .
1 . Any development constructed pursuant to a Stormwater Man-
agement Permit shall be subject to periodic inspections by the
Director or the Administrator to ensure conformity with permit
provisions and conditions .
2 . Unless otherwise provided by a valid and enforceable inter-
governmental agreement, the Department shall inspect and
monitor the construction and maintenance of mitigation
measures prepared pursuant to Section 15-135 of this Ordinance
for all mitigated wetlands authorized by a Stormwater
Management Permit in a non-waiver or partial waiver community.
Sec. 15-198 . Notice of Violations.
Whenever the Director or the Administrator determines that a viola-
tion of a permit exists, the Department or the Oversight Committee
i
ARTICLE 14. ENFORCEMENT AND PENALTIES
Sec. 15-196 through 15-204 - 81 -
f
shall issue a notice of violation to the owner, developer, or
person in control by posting a copy of the notice on the subject
parcel and by mailing the notice to the owner, developer, or person
in control . Such notice shall state the nature of the alleged
violation and shall fix a date not less than ten (10) days after
the date of the notice when the parcel or development will be rein-
spected. If the condition is not corrected upon reinspection,
then, in addition to other remedies, ' the proper authorities of the
County or the waiver community may institute any appropriate action
or proceedings in the circuit court to restrain, correct, or abate
such violation.
Sec. 15-199. Revocation of Permits .
The Director or the Administrator may revoke a Stormwater Man-
agement Permit under any of the following circumstances :
1 . When the application, plans, or other supporting documents
required by this Ordinance or the waiver community ordinance
reflect a false statement or misrepresentation as to material
fact; or
2 . When the permit holder fails to post or maintain security,
execute covenants, or dedicate easements as required; or
3 . Any violation of any relevant local, State, or Federal
requirement.
Sec. 15-200 . Stop-Work Order.
1 . The Director or the Administrator, upon discovery of the
existence of any of the circumstances established in Sub-
section 15-200.2 of this Ordinance, is authorized to issue an
order requiring the suspension of the subject development.
Such stop-work order shall be in writing, shall indicate the
reason for its issuance, and shall order the action, if any,
necessary to resolve the circumstances requiring the stop-work
order. One copy of the stop-work order shall be posted on the
property in a conspicuous place and one copy shall be
delivered by mail or by personal delivery to the permit holder
and to the owner of the property or his or her agent . The
stop-work order shall state the conditions under which the
subject development may be resumed.
ARTICLE 14. ENFORCEMENT AND PENALTIES
Sec. 15-196 through 15-204 - 82 -
2 . A stop-work order shall be issued if the governmental unit
having jurisdiction over Stormwater Management in that area is
aware that:
a. Development is proceeding in a manner which creates
imminent hazard of severe harm to persons or property on
or off the site; or
b. Development has been accomplished in violation of a
requirement of this Ordinance, or the waiver community
ordinance, or a Stormwater Management Permit, or any
other applicable law or regulation, and a period of
longer than fifteen (15) calendar days has elapsed since
written notice of the violation or noncompliance was
posted on the property in a conspicuous place or given to
the person conducting the development without the
violation or noncompliance being corrected; or
C. Development for which a Stormwater Management Permit is
required is proceeding without issuance of a Stormwater
Management Permit. In such instance, the stop-work order
shall indicate that the effect of the order terminates
when the required Stormwater Management Permit is
properly obtained.
Sec. 15-201 . Fines .
1 . Any person who violates, disobeys, omits, neglects, or refuses
to comply with, or who resists enforcement of, any provision
of this Ordinance, the applicable waiver community ordinance,
or any condition in any permit issued pursuant to this
Ordinance or a waiver community ordinance, shall be subject to
a fine not in excess of five hundred dollars $500 for each
offense. Each calendar day a violation continues to exist
shall constitute a separate offense.
2 . For the purposes of this Section 15-201, the owner, any
occupant, or the developer and any contractor doing devel-
opment work on the land shall be jointly and severally liable
for any violation of this Ordinance or the waiver community
ordinance.
3 . The Committee or, in a full waiver community, the Oversight
Committee shall request its appropriate legal counsel to
prosecute such action as a petty offense pursuant to 730 ILCS
ARTICLE 14. ENFORCEMENT AND PENALTIES
Sec. 15-196 through 15-204 - 83 -
5/5-1-17 (1992) ; as hereafter amended; or according to other
appropriate authority in law or in equity.
Sec. 15-202 . Additional Remedies for Special Flood Hazard Areas.
1 . Pursuant to 55 ILCS 5/5-12003 (1992) , upon the unauthorized
excavation or filling of a special flood hazard area in an
unincorporated area of the county, by any person, the County
may petition the circuit court for an order to remove the fill
and restore the parcel to its natural elevation in order to
lessen or avoid the imminent threat to public health, safety,
or welfare and damage to property resulting from the accu-
mulation or runoff of stormwater or floodwater.
a. When, after a diligent search, the identity or
whereabouts of the owner of any such parcel, including
lien holders of record, are not ascertainable, notice
mailed to the person in whose name the real estate was
last assessed for taxes, constitutes sufficient notice
under this Section 15-202 .
b. The cost of removal of fill and restoration incurred by
the County shall be recoverable from the owner of such
real estate and shall be a lien against the property.
C. Such lien shall be superior to all other prior existing
liens and encumbrances, except taxes; provided that
within sixty (60) days after such removal of fill or
restoration of the parcel to its natural elevation, the
County Board shall file a notice of lien of such cost and
expense incurred in the office of the County Recorder.
d. Such notice shall include a sworn statement setting out:
(1) A description of the real estate sufficient for
identification thereof; and
(2) The amount of money representing the cost and
expense incurred; and
(3) The date on which the cost was incurred.
e. Such lien may be enforced by proceedings of foreclosure
as in the case of mortgages or mechanics ' liens, which
action shall be commenced within three years after the
date of filing of the notice of lien.
ARTICLE 14. ENFORCEMENT AND PENALTIES
Sec. 15-196 through 15-204 - 84 -
f. Upon payment of the costs and expenses by the owner or
persons interested in the property, the lien shall be
released by the County or the waiver community and the
release may be filed of record.
2 . Each waiver community shall utilize all available means at law
or in equity to enforce the Special Flood Hazard Area
provisions of its applicable ordinance.
Sec. 15-203. Legal and Equitable Relief.
In the enforcement of this Ordinance or the applicable waiver
community ordinance, the Director or the Administrator shall have
the authority to institute, or cause to be instituted, in the name
of the County or the waiver community, any and all actions, legal
or equitable, including appeals, that are required for the
enforcement of this Ordinance or the applicable waiver community
ordinance.
Sec. 15-204 . Injunctive Relief.
In circumstances of substantial danger to the environment, to the
public health and welfare, or to the livelihood of any person, the
Director or the Administrator shall have the authority to cause to
be instituted a civil action for an immediate injunction to halt
any discharge or other activity causing or contributing to the
danger, or to require such other action as may be necessary.
Sec. 15-205 through 15-225. Reserved.
ARTICLE 14. ENFORCEMENT AND PENALTIES
Sec. 15-196 through 15-204 - 85 -
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ARTICLE 15. APPEALS.
Sec. 15-226. Right to Appeal .
1 . Any person directly aggrieved by any decision, order,
requirement, or determination of the Director or the Admin-
istrator made pursuant to an interpretation of this Ordinance
or the applicable community ordinance shall have the right to
appeal such action directly to the Committee or the Oversight
Committee; provided, however, that all decisions made by the
Director or the Administrator pursuant to Article 14 of this
Ordinance shall be deemed final and not appealable, except as
otherwise specifically provided in Subsection 15-196.2 of
Article 14 .
2 . Every applicant for an appeal shall notify the Committee or
the Oversight Committee in writing of the decision being
appealed, which notice shall include a short, plain statement
containing the reasons why the decision is being appealed and
how the applicant has been directly aggrieved by the action
taken.
3 . Upon receipt of such a notice of appeal, the Committee or the
Oversight Committee shall set a date for a public hearing
before the Committee or the Oversight Committee. Such public
hearing shall commence not fewer than fourteen (14) days nor
more than thirty (30) days after the date on which a properly
prepared notice of appeal was received. The applicant shall
be promptly notified of the public hearing date.
4 . A public hearing shall be set, noticed, and conducted by the
Committee in accordance with the provisions of Section 15-256
of this Ordinance.
5. The Committee or the Oversight Committee shall decide the
appeal within sixty (60) days after the conclusion of the
public hearing. All decisions on appeals shall be in writing
and shall include a statement of the reasons for the decision.
The failure of the Committee or the Oversight Committee to act
within sixty (60) days shall be deemed to be a decision
denying the appeal.
6. The applicant may appeal the decision of the Committee to the
County Board by filing a notice thereof in the form required
by Subsection 15-226.2 of this Ordinance with the County Board
within fourteen (14) days after the date of decision by the
ARTICLE 15. APPEALS
Sec. 15-226 - 87 -
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Committee. Failure to properly file such notice shall render
final the decision of the Committee.
7 . Within thirty-five (35) days after receipt of a properly
prepared and filed notice of appeal, the County Board shall,
without hearing, affirm, reverse, or modify the decision of
the Committee. The failure of the County Board to act within
thirty-five (35) days shall be deemed to be a final decision
of the County Board denying the appeal .
8 . The decision of the County Board shall in all instances be
considered a final decision.
Sec. 15-227 through 15-235. Reserved.
ARTICLE 15. APPEALS
Sec. 15-226 - 88 _
ARTICLE 16. VARIANCES.
Sec. 15-236. Authority; Applications; Standards.
1 . The County Board in non-waiver communities or the corporate
authorities of the waiver community shall have the authority
to grant variances from the requirements of this Ordinance,
but only in compliance with the procedures set forth in this
Section 15-236.
2 . The variance procedure is intended to provide a narrowly
circumscribed means by which relief may be granted to allow
development when the requirements of this Ordinance or the
applicable waiver community ordinance place an undue and
particular hardship on a specific developer.
3. Variance petitions may be filed either by the owner or by the
developer of land specified in the application.
4 . The petition for a variance shall accompany or follow an
application for a Stormwater Management Permit including all
necessary submittals.
5. All variance petitions filed pursuant to this Section 15-236
shall be filed with the Director or the Administrator.
6. All variance petitions filed pursuant to this Section 15-236
shall be on forms supplied by the Director or the Adminis-
trator and shall be filed in such number of duplicate copies
as the Director or the Administrator may designate by
administrative order.
7 . Every variance petition filed pursuant to this Section 15-236
shall provide the following information:
a. The owner' s or developer' s signed consent to the filing
of the petition; and
b. The names and addresses of all professional consultants,
if any, advising the petitioner with respect to the
petition; and
C. The name and address and the nature and extent of any
economic or family interest of any officer or employee of
the County in non-waiver communities, or the local
I
ARTICLE 16. VARIANCES
89
Sec. 15-236 through 15-240 - -
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municipality in a waiver community, as to: the owner, the
petitioner, or the subject property or development; and
d. The addresses and legal description of the subject
property or development; and
e. The specific feature or features of the proposed con-
struction or development that require a variance; and
f. The specific provision of this Ordinance or the waiver
community ordinance from which a variance is sought and
the precise variation therefrom being sought; and
g. A statement of the characteristics of the subject
property or development that prevent compliance with the
provisions of this Ordinance or the waiver community
ordinance; and
h. A statement of the minimum variance of the provisions of
this Ordinance or the waiver community ordinance that
would be necessary to permit the proposed construction or
development; and
i . A statement of how the variance sought satisfies the
standards set forth in Subsection 15-236.10 of this
Ordinance.
8 . No public hearing will be scheduled on a variance petition
unless the petition is filed in proper form and number and
contains all required information.
9. Whenever supplemental data in connection with a previously
filed variance petition is required or offered by the
applicant, it shall be submitted at least five (5) days prior
to the date on which it is to be considered at a hearing or
acted upon in connection with such petition. The filing of
such data shall, in the discretion of the body hearing the
petition, be cause to delay a requested or scheduled hearing
date.
10 . The Committee or the Oversight Committee shall consider, and
the County Board or the corporate authorities of the waiver
community may grant, such petition for a variance only when it
is consistent with the general purpose and intent of this
Ordinance or the waiver community ordinance and when the
development meets the requirements specified in Section 15-112
of this Ordinance as well as the following conditions :
ARTICLE 16. VARIANCES
Sec. 15-236 through 15-240 - 90 -
i
sent no less than fourteen (14) days in advance of the date of
the public hearing by regular U.S . mail or its equivalent.
Sec. 15-237 . Public Hearing Required.
A public hearing shall be set, noticed, and conducted by the
Committee or the Oversight Committee in accordance with the
provisions of Section 15-256 of this ordinance.
Sec. 15-238 . Review and Recommendation.
1 . The Director or the Administrator shall review all requests or
petitions for a variance and shall present written findings of
the review to the ' Committee or the Oversight Committee.
2 . Within thirty-five (35) days after the close of the public
hearing, the Committee or the Oversight Committee shall make
a written recommendation to the County Board or the corporate
authorities of the waiver community to grant or deny the
variance petition. The failure of the Committee or the
Oversight Committee to act within thirty-five (35) days shall
be deemed to be a recommendation to deny the variation.
3. The written recommendation of the Committee or the Oversight
Committee whether to grant or deny the requested variance
shall be accompanied by written findings of fact specifying
the reasons for the decision, which written findings shall be
distributed to the members of the County Board or the
corporate authorities of the waiver community before the
County Board or the corporate authorities of the waiver
community votes to grant or deny the variance petition.
Sec. 15-239. Decision.
The County Board or the corporate authorities of the waiver
community shall grant the variation, grant the variation with
modifications or conditions, or deny the variation within forty-
five (45) days after receipt of the recommendation of the Committee
or the Oversight Committee. The failure of the County Board or the
corporate authorities of the waiver community to act within forty-
five (45) days, or such additional time as the applicant may agree,
shall be deemed to be a decision denying the variation.
ARTICLE 16. VARIANCES
Sec. 15-236 through 15-240 - 92 -
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a. Granting the variance shall not alter the essential
character of the area involved, including existing stream
uses; and
b. Carrying out the strict letter of the provisions of this
Ordinance or the waiver community ordinance would create
an undue or particular hardship or difficulty on a
specific developer or owner; and
C. The relief requested is the minimum necessary and there
are no means other than the requested variance by which
the alleged hardship can be avoided or remedied to a
degree sufficient to permit the reasonable continuation
of the development; and
d. The applicant ' s circumstances are unique and do not
represent a general condition or problem; and
e. The subject development is exceptional as compared to
other developments subject to the same provision; and
f. A development proposed for a special management area
could not be constructed if it were limited to areas
outside the special management area.
11 . No variance shall be granted for any development in the
regulatory floodway, regulatory wetlands, and critical
wetlands from any provision of this Ordinance or a waiver
community ordinance the effect of which variance would be to
create regulation less restrictive or stringent than federal
and/or state required minimum standards for development in
such areas . Subject to this standard, a variance may be
granted in accordance with this Section 15-236 from provisions
of this Ordinance or a waiver community ordinance more
restrictive or stringent than the federal and/or state
required minimum standards for development in such areas .
12 . When a variance from the requirements of this Ordinance or the
waiver community ordinance would lessen the degree of
protection to a structure, the Director or the Administrator
shall notify the applicant that the variance, if granted, may
result in increased rates for flood insurance.
13 . The Director or the Administrator shall give written notice of
any variance petition, including the date and time of the
public hearing, to the Committee, the Department, and all
watershed planning area communities . Such notice shall be
ARTICLE 16. VARIANCES
Sec. 15-236 through 15-240 - 91
Sec. 15-240 . Conditions .
1 . A variance less than or different from that requested may be
granted when the record supports the applicant' s right to some
relief but not to the relief requested.
2 . The County Board or the corporate authorities of the waiver
community may impose such specific conditions and limitations
concerning any matter relating to the purposes and objectives
of this Ordinance or the waiver community ordinance on the
development benefitted by a variance as may be necessary or
appropriate.
3. Whenever any variance authorized pursuant to this Ordinance or
the waiver community ordinance is made subject to conditions
and limitations to be met by the developers, the applicant
shall, upon meeting such conditions, file an affidavit with
the Director or the Administrator so stating.
Sec. 15-241 through 15-255. Reserved.
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ARTICLE 16. VARIANCES
Sec. 15-236 through 15-240 - 93 -
ARTICLE 17. MISCELLANEOUS PROVISIONS.
Sec. 15-256. Public Hearings .
1 . When the provisions of this Ordinance or the waiver community
ordinance require a public hearing in connection with any
application, petition, or appeal, the Committee or the
Oversight Committee shall, upon receipt of a properly com-
pleted application, petition, or notice, fix a reasonable time
and place for such hearing or meeting; provided, however, that
such hearing or meeting shall be commenced no later than sixty
(60) days, and shall be concluded no later than one hundred
twenty (120) days, following the submission of the subject
application, or petition, unless the hearing or meeting agenda
of the body is completely committed during that time.
2 . All hearings shall be open to the public and shall be held
before the Committee or the Oversight Committee.
3 . The Committee or the Oversight Committee shall cause notice to
be given of public hearings in the form and manner and to the
persons herein specified.
4 . Such notice shall contain a description of the subject matter
to be heard or considered at the hearing, the address or
particular location of the subject development, and the time,
place, and date of the hearing. The notice shall also contain
a reference to the particular sections of this Ordinance or
the waiver community ordinance involved.
5. Notice of every hearing shall be given by mail or personal
delivery to the applicant or petitioner. Notice by mail shall
be mailed no fewer than fourteen (14) days in advance of the
hearing by regular U.S. mail, except as otherwise specifically
provided in this Ordinance or the waiver community ordinance.
6. The Committee or the Oversight Committee shall publish notice
of the public hearing at least once, not less than fourteen
(14) days before the date for the hearing, in a newspaper of
general circulation in the geographic area where the property
that is the subject of the hearing is located.
7 . Any interested person may appear and testify at a public
hearing, either in person or by a duly authorized agent or
attorney, and may submit documentary evidence; provided,
however, that the Committee, and the Oversight Committee, may
I
ARTICLE 17. MISCELLANEOUS PROVISIONS
Sec. 15-256 through 15-260 - 95 -
i
exclude irrelevant, immaterial, or unduly repetitious
evidence.
8 . Subject to the discretion of the Committee, and the Oversight
Committee, the applicant or petitioner, or any other party to
the hearing, may be allowed any or all of the following
rights :
a. To present witnesses on their behalf.
b. To cross-examine all witnesses testifying in opposition
to the application, petition, or appeal .
C. To examine and reproduce any documents produced at the
hearing.
d. To have subpoenas issued by the body in charge of the
hearing as may be provided by Illinois law for persons to
appear at the hearings and for examination of documents
by the person requesting the subpoena either before or
during the hearing, where such persons or documents are
shown to have a substantial evidentiary connection with:
(1) The development to which the request applies; or
(2) Facts that would support or negate the legal
standards for granting or denying the request or
appeal .
e. To a continuance, upon request, for the purpose of
presenting evidence to rebut evidence introduced by any
other person.
In determining whether to grant or withhold such rights, the
discretion of the Committee, and the Oversight Committee,
shall be governed by the goal of securing all information and
opinion relevant and material to its deliberations . Such
rights shall not be granted, however, when undue and
unwarranted delay would result or when to do so would tend to
produce no new evidence to aid the hearing body in reaching
its decision.
9. The Committee, and the Oversight Committee, may at any time,
on its own motion or at the request of any person, adjourn the
hearing for a reasonable time and to a fixed date, time, and
place, for the purpose of giving further notice, taking
further evidence, gathering further information, deliberating
ARTICLE 17. MISCELLANEOUS PROVISIONS
Sec. 15-256 through 15-260 - 96 -
further, or for such other reason as the Committee, and the
Oversight Committee, may find sufficient. Proper notice of
such a recess shall be 'given to all parties to the hearing,
and any other person designated by the Committee, and the
Oversight Committee.
10. All testimony at every hearing shall be given under oath.
11 . Any person may at any time prior to the commencement of a
hearing hereunder, or during such hearing, or within such time
as may be allowed by the ' Committee, and the Oversight
Committee, following such hearing, submit written statements
in support of or in opposition to the application, petition,
or appeal being heard.
12 . All other matters pertaining to the conduct of hearings shall
be governed by the provisions of this Ordinance or the waiver
community ordinance pertaining to, and the rules promulgated
by, the Committee or the Oversight Committee.
13. The record of the public hearing shall include:
a. All notices and responses thereto; and
b. A transcript or notes, if any, of all oral testimony
received, the cost of which transcription shall be the
responsibility of the party requesting that the record be
transcribed, and all written information, if any, submit-
ted by parties or the public; and
C. Any recommendation or report by the hearing body; and
d. All Department memoranda or data submitted to the hearing
body in connection with its consideration of the subject
matter of the hearing.
14 . The decision or recommendation of the Committee or the
Oversight Committee shall be in writing and shall include
findings of fact specifying the reasons for the decision. The
copy of the written decision shall be provided to the
applicant or petitioner and transmitted to the County Board or
the corporate authorities of a waiver community.
ARTICLE 17. MISCELLANEOUS PROVISIONS
Sec. 15-256 through 15-260 - 97 -
Il
f
I i
i
i
Sec. 15-257 . Severability.
1 . The several provisions of this Ordinance or the waiver
community ordinance shall be severable in accordance with the
following rules :
a. If any court of competent jurisdiction shall adjudge any
provision of this Ordinance or the waiver community
ordinance invalid, such judgment shall not affect any
other provisions of this Ordinance or the waiver com-
munity ordinance.
b. If any court of competent jurisdiction shall adjudge
invalid the application of any provision of this Ordi-
nance, or the waiver community ordinance, to a particular
parcel of land, a particular ' structure, or a particular
development, such judgment shall not affect the
application of said provisions to any other land,
structure, or development.
2 . All such unaffected provisions of this Ordinance or the waiver
community ordinance shall remain in full force and effect.
Sec. 15-258 . Most Restrictive Provisions Apply.
The provisions of this Ordinance and all applicable waiver com-
munity ordinances shall be interpreted to be cumulative of, and to
impose limitations in addition to, all other ordinances, laws,
codes, and regulations in existence or which may be passed gov-
erning any subject matter of this Ordinance or the waiver community
ordinances . To the greatest extent possible, the provisions of
this Ordinance and the waiver community ordinances shall be
construed to be consistent with, and not in conflict with, the
provisions of such other ordinances, laws, codes, and regulations,
and with each other, to the end that all such provisions may be
given their fullest application.
This Ordinance is intended to repeal the original ordinance or
resolution which was adopted to meet the National Flood Insurance
Program regulations, but is not intended to repeal any resolution
which the applicable governmental entity passed in order to
establish initial eligibility for the National Flood Insurance
Program.
ARTICLE 17. MISCELLANEOUS PROVISIONS
Sec. 15-256 through 15-260 - 98 -
i
Sec. 15-259. Amendments .
This Ordinance may be amended in accordance with the adopted rules
of the Committee and the DuPage County Board. Amendments to this
Ordinance shall only take effect after a public hearing is held
before the Committee and the amendment is adopted by the DuPage
County Board.
Sec. 15-260. Effective Date.
This Ordinance shall take effect for all purposes, and its
effective date shall be, February 15, 1992 .
Sec. 15-261 through 15-265. Reserved.
I
ARTICLE 17. MISCELLANEOUS PROVISIONS i
Sec. 15-256 through 15-260 - 99 -
i
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EXHIBIT 2
DU PAGE COUNTY, ILLINOIS
DESIGNATED FLOODWAYS/FLOOD PLAINS
March 22, 1994
UNINCORPORATED AREAS
REG SC-1, SC-2, SC-2A, SC-3, SC-4, SC-5, SC-6, SC-6A, SC-6B, SC-
6C, SC-7, SC-8, SC-8A, SC-8B, SC-9, SC-10, SC-11, SC-12, SC-
13, SC-14 and SC-15
FBFW C-PN' s : 170197 0005 thru 0065; E.D. ' s: 04/15/82 and
12/04/85
FIRM C-PN' s: 170197 0005B, 0010C, 0015B thru 0025B, 0030D, and
0035B thru 0065B; E.D. ' s : 04/15/82, 12/04/85,
and 10/18/88
FIS October 19, 1991
WATERWAY MAP TYPE MAP NUMBER MAP DATE DESCRIPTION OF REACH
63RD STREET FBFW 0060 04/15/82 9000 FT. TO 15, 050 FT. ABOVE
DITCH FIRM 0060B 04/15/82 MOUTH.
2-1
WATERWAY MAP TYPE MAP NUMBER MAP DATE DESCRIPTION OF REACH
ADDISON CREEK FBFW 0015 & 0030 04/15/82
FIRM 0015 04/15/82
FIRM 0030D 10/18/88
*ARMITAGE DITCH FBFW 0025 04/15/82 MOUTH AT EAST BRANCH DUPAGE
FIRM 0025B 04/15/82 RIVER TO CORPORATE LIMITS
GLENDALE HEIGHTS .
BREWSTER CREEK FBFW 0005 04/15/82 MUNGER ROAD TO VILLAGE OF
FIRM 0005B 04/15/82 BARTLETT CORPORATE LIMITS .
CRABTREE CREEK FBFW 0055 04/15/82 RTE. 53 (WOODRIDGE) TO 0. 595
FIRM 0055B 04/15/82 MI . ABOVE MOUTH.
DEVON AVE. FBFW 0015 04/15/82
TRIB. FIRM 0015B 04/15/82
DES PLAINES FBFW 0065 04/15/82 WILL COUNTY BOUNDARY TO COOK
RIVER FIRM 0065B 04/15/82 COUNTY BOUNDARY.
DES PLAINES FBFW 0065 04/15/82
TRIB. NO. 2 FIRM 0065B 04/15/82
DES PLAINES FBFW 0065 04/15/82
TRIB. NO. 3 FIRM 0065B 04/15/82
DES PLAINES FBFW 0065 04/15/82
TRIB. NO. 5 FIRM 0065B 04/15/82
2-2
WATERWAY MAP TYPE MAP NUMBER MAP DATE DESCRIPTION OF REACH
EAST BRANCH FBFW 0010 12/04/85 WILL COUNTY BOUNDARY TO 0. 3
DUPAGE RIVER FBFW 0025, 0030, 04/15/82 MI . ABOVE MAPLE AVENUE (LISLE)
0040 & 0055 AND I-88 TO 0. 1 MI . ABOVE
FIRM OOlOC 12/04/85 BLOOMINGDALE CORPORATE LIMITS.
FIRM 0030D 10/18/88
FIRM 0025B, 0040B & 04/15/82
0055B
EAST BRANCH FBFW 0025 04/15/82 MOUTH AT EAST BRANCH DUPAGE TO
DUPAGE RIVER FIRM 0025B 04/15/82 FARM BRIDGE (GLENDALE
TRIB. NO. 2 HEIGHTS) .
EAST BRANCH FBFW 0040 & 0045 04/15/82
DUPAGE RIVER FIRM 0040B & 0045B 04/15/82
TRIB. NO. 3
EAST BRANCH FBFW 0040 04/15/82 MOUTH AT EAST BRANCH DUPAGE
DUPAGE RIVER FIRM 0040B 04/15/82 RIVER TO 1 . 46 MI . ABOVE MOUTH.
TRIB. NO. 4
EAST BRANCH FBFW 0040 04/15/82 MOUTH AT EAST BRANCH DUPAGE
DUPAGE RIVER FIRM 0040B 04/15/82 RIVER TO NAPERVILLE ROAD.
TRIB. NO. 5
*EAST BRANCH FBFW 0055 04/15/82
DUPAGE RIVER FIRM 0055B 04/15/82
TRIB. NO. 6
EAST BRANCH FBFW 0055 04/15/82 MOUTH AT EAST BRANCH DUPAGE
DUPAGE RIVER FIRM 0055B 04/15/82 RIVER TO PALAMINO DRIVE.
TRIB. NO. 7
2-3
WATERWAY MAP TYPE MAP NUMBER MAP DATE DESCRIPTION OF REACH
EAST BRANCH FBFW 0055 04/15/82
DUPAGE RIVER FIRM 0055B 04/15/82
TRIB. NO. 8
FERRY CREEK FBFW 0035 04/15/82 MOUTH AT WEST BRANCH DUPAGE
FIRM 0035B 04/15/82 RIVER TO TOWN LINE ROAD AND
0. 12 MI . BELOW HOME AVE.
(WARRENVILLE) TO 3 . 39 MI .
ABOVE MOUTH.
*FERRY CREEK FBFW 0035 & 0050 04/15/82 MOUTH AT FERRY CREEK TO 1 . 375
TRIB. 1 FIRM 0035B & 0050B 04/15/82 MI . ABOVE MOUTH.
GINGER CREEK REG SC-6A & SC-6B 07/01/79 8850 FT. TO 12, 200 FT. ABOVE
FBFW 0045 04/15/82 CONFLUENCE WITH SALT CREEK.
FIRM 0045B 04/15/82
KLEIN CREEK FBFW 0020 & 0025 04/15/82 MOUTH AT WEST BRANCH DUPAGE
FBFW 0010 12/04/85 RIVER TO CAROL STREAM
FIRM 0020B & 0025B 04/15/82 CORPORATE LIMITS AND LIES ROAD
FIRM 0010C 12/04/85 (CAROL STREAM) TO 6. 46 MI .
ABOVE MOUTH.
*KLEIN CREEK FBFW 0025 04/15/82 CONFLUENCE WITH KLEIN CREEK TO
TRIB. NO. 1 FIRM 0025B 04/15/82 PLEASANT HILL ROAD.
*KLEIN CREEK FBFW 0010 12/04/85 MOUTH AT KLEIN CREEK TO 0 .7
TRIB. NO. 3 FIRM 0010C 12/04/84 MI . ABOVE MOUTH.
KRESS CREEK FBFW 0020 & 0035 04/15/82 MOUTH AT WEST BRANCH DUPAGE
FIRM 0020B & 0035B 04/15/82 RIVER TO POWIS ROAD.
2-4
WATERWAY MAP TYPE MAP NUMBER MAP DATE DESCRIPTION OF REACH
LACEY CREEK FBFW 0040 & 0045 04/15/82 0.26 MI . ABOVE MOUTH TO 0. 06
FIRM 0040B & 0045B 04/15/82 MI . ABOVE FINLEY ROAD AND
2 . 665 MI . ABOVE MOUTH TO 3 . 16
MI . ABOVE MOUTH.
*MEACHAM CREEK REG SC-32, SC-31A & 07/01/79 0. 353 MI . DOWNSTREAM FROM
SC-34 MEDINAH COUNTRY CLUB ROAD TO
FBFW 0010 12/04/85 MEDINAH ROAD (ITASCA) .
FIRM 0010C 12/04/85
NORTON CREEK FBFW 0005 04/15/82 CHICAGO & NORTHWESTERN R.R.
TRIB. FIRM 0005B 04/15/82 (WAYNE) TO POWIS ROAD.
PRENTISS CREEK FBFW 0055 04/15/82 MOUTH AT EAST BRANCH DUPAGE
FIRM 0055B 04/15/82 RIVER TO DOWNERS GROVE
CORPORATE LIMITS .
ROTT CREEK FBFW 0040 & 0055 04/15/82
FIRM 0040B & 0055B 04/15/82
SAINT PROCOPIUS FBFW 0055 04/15/82
CREEK FIRM 0055B 04/15/82
SALT CREEK REG SC-7, SC-8, 07/01/79 SC-7, SC-8 14 . 155 MI . TO 14 . 6
SC-9, SC-10, MI . ABOVE MOUTH. SC-9, SC-10,
SC-11, SC-13 & SC-11 I .C.G. RR. TO CITY OF
SC-14 WOODDALE CORPORATE LIMITS .
FBFW 0015, 0030 & 0045 04/15/82 SC-13, SC-14 24 . 6 MI . ABOVE
FIRM 0015B & 0045B 04/15/82 MOUTH TO COOK COUNTY BOUNDARY.
FIRM 0030D 10/18/88
2-5
WATERWAY MAP TYPE MAP NUMBER MAP DATE DESCRIPTION OF REACH
SAWMILL CREEK FBFW 0060 & 0065 04/15/82 MOUTH AT DES PLAINES RIVER TO
FIRM 0060B & 0065B 04/15/82 CITY OF DARIEN CORPORATE
LIMITS.
SAWMILL CREEK FBFW 0060 04/15/82 MOUTH AT SAWMILL CREEK TO 79TH
TRIB. 1 FIRM 0060B 04/15/82 STREET
SAWMILL CREEK FBFW 0060 & 0065 04/15/82 MOUTH AT DES PLAINES RIVER TO
TRIB. 3 FIRM 0060B & 0065B 04/15/82 50 FT. ABOVE 91ST STREET.
*TRIB. A FBFW 0060 04/15/82
WEST BRANCH FIRM 0065B 04/15/82
SAWMILL CREEK
TRIB. B FBFW 0060 04/15/82
WEST BRANCH FIRM 0065B 04/15/82
SAWMILL CREEK
SAWMILL CREEK FBFW 0060 & 0065 04/15/82
FIRM 0060B & 0065B 04/15/82
SPRING BROOK REG SC-29 & SC-32 07/01/79 2 .21 MI . TO 2 . 95 MI . ABOVE
FBFW 0015 04/15/82 MOUTH AND 19, 550 FT. TO 23, 325
FBFW 0010 12/04/85 FT. ABOVE LAKE KADIJAH
FIRM 0015B 04/15/82 SPILLWAY.
FIRM 0010C 12/04/85
SPRING BROOK FBFW 0035 & 0040 04/15/82 MOUTH AT WEST BRANCH DUPAGE
NO. 1 FIRM 0035B & 0040B 04/15/82 RIVER TO 3 . 475 MI . ABOVE MOUTH
AND 4 . 465 TO 5. 46 MI . ABOVE
MOUTH.
2-6
WATERWAY MAP TYPE MAP NUMBER MAP DATE DESCRIPTION OF REACH
SPRING BROOK FBFW 0050 04/15/82 COUNTY BOUNDARY AT 87TH STREET
NO. 2 FIRM 0050B 04/15/82 TO 8 .77 MI . ABOVE MOUTH.
ST. JOSEPH FBFW 0040, 0045 & 0060 04/15/82 MAIN STREET (LISLE) TO DOWNERS
CREEK FIRM 0040B, 0045B & 04/15/82 GROVE CORPORATE LIMITS AND
0060B 2 . 95 TO 3 . 97 MI . ABOVE MOUTH
AND 59TH STREET TO 61ST
STREET.
ST. JOSEPH FBFW 0040 04/15/82 0. 21 MI . ABOVE CONFLUENCE WITH
CREEK FIRM 0040B 04/15/82 ST. JOSEPH CREEK TO
TRIBUTARY A WARRENVILLE ROAD
ST. JOSEPH FBFW 0040 04/15/82 MOUTH AT ST. JOSEPH CREEK TO
CREEK FIRM 0040B 04/15/82 1450 FT. ABOVE MOUTH.
TRIBUTARY B
SUGAR CREEK REG SC-8A & SC-8B 07/01/79 7440 FT. ABOVE MOUTH TO ARDORE
FBFW 0030 04/15/82 AVE. VILLA PARK.
FIRM 0030D 10/18/88
UNNAMED CREEK FBFW 0045 04/15/82 0.76 MI . TO 1 . 03 MI . ABOVE
N. OF 22ND ST. FIRM 0045B 04/15/82 MOUTH.
UNNAMED TRIB. FBFW 0020 04/15/82 TOWN ROAD (WEST CHICAGO) TO
TO KRESS CREEK FIRM 0020B 04/15/82 0. 467 MI . ABOVE MOUTH.
2-7
WATERWAY MAP TYPE MAP NUMBER MAP DATE DESCRIPTION OF REACH
WEST BRANCH FBFW 0005, 0020, 0025 04/15/82 WILL COUNTY BOUNDARY TO 32 . 27
DUPAGE RIVER 0035, 0050 & 0055 MI . ABOVE MOUTH AND 34 . 19 MI .
FBFW 0010 12/04/85 ABOVE MOUTH TO OGDEN AVE. TO
FIRM 0005B, 0020B, 04/15/82 I-88 AND CONFLUENCE OF SPRING
0025B, 0035B, BROOK NO. 1 TO CHICAGO
0050B & 0055B MILWAUKEE AND ST. PAUL R.R.
FIRM OOlOC 12/04/85
WEST BRANCH FBFW 0010 12/04/85 FOREST PRESERVE ROAD TO GARY
DUPAGE FIRM 0010C 12/04/85 AVENUE.
TRIB. NO. 1
WEST BRANCH FBFW 0005 04/15/82 VILLAGE OF BARTLETT CORPORATE
DUPAGE FIRM 0005B 04/15/82 LIMITS TO FOOT BRIDGE AT 2 . 09
TRIB. NO. 2 MI . ABOVE MOUTH.
WEST BRANCH FBFW 0020 04/15/82 MOUTH AT WEST BRANCH DUPAGE
DUPAGE FIRM 0020B 04/15/82 RIVER TO WOODCREST DRIVE.
TRIB. NO. 3
WEST BRANCH FBFW 0020 04/15/82 MOUTH AT WEST BRANCH DUPAGE
DUPAGE FIRM 0020B 04/15/82 RIVER TO VILLAGE OF CAROL
TRIB. NO. 4 STREAM CORPORATE LIMITS .
WEST BRANCH FBFW 0020 04/15/82 MOUTH AT WEST BRANCH DUPAGE
DUPAGE FIRM 0020B 04/15/82 RIVER TO CHICAGO AND
TRIB. NO. 5 NORTHWESTERN R.R.
WEST BRANCH FBFW 0055 04/15/82 MOUTH AT WEST BRANCH DUPAGE
DUPAGE FIRM 0055B 04/15/82 RIVER TO 0. 478 MI . ABOVE
TRIB. NO. 6 MOUTH.
2-8
WATERWAY MAP TYPE MAP NUMBER MAP DATE DESCRIPTION OF REACH
WEST BRANCH FBFW 0055 04/15/82 MOUTH AT WEST BRANCH DUPAGE
DUPAGE FIRM 0055B 04/15/82 RIVER TO 0 . 568 MI . ABOVE
TRIB. NO. 7 MOUTH.
*WARDS CREEK FBFW 0060 & 0065 04/15/82 MOUTH AT SAWMILL CREEK TO 5. 03
FIRM 0060B & 0065B 04/15/82 MI . ABOVE MOUTH.
WAUBANSEE CREEK FBFW 0050 04/15/82 NOT ON REG. MAP-- 42, 300 FT.
FIRM 0050B 04/15/82 TO 42, 580 FT. ABOVE MOUTH.
WESTWOOD CREEK REG SC-30 & SC-30A 07/01/79 CONFLUENCE WITH SALT CREEK TO
FBFW 0015 & 0030 04/15/82 2300 FT. ABOVE CONFLUENCE.
FIRM 0015B 04/15/82
FIRM 0030D 10/18/88
WINDING CREEK FBFW 0055 04/15/82 0. 55 MI . TO 1 .205 MI . ABOVE
FIRM 0055B 04/15/82 MOUTH AT MODAFF ROAD
(NAPERVILLE) .
WINFIELD CREEK FBFW 0025 & 0040 04/15/82 ROOSEVELT ROAD (WINFIELD) TO
FIRM 0025B & 0040B 04/15/82 1 .785 MI . ABOVE MOUTH AND 2 .76
TO 2 . 98 MI . ABOVE MOUTH AND
4 . 07 TO 4 . 565 MI . ABOVE MOUTH
AND 6. 325 MI . ABOVE MOUTH TO
BLOOMINGDALE ROAD.
2-9
INCORPORATED AREAS
* * ADDISON * *
REG. SC-10, SC-11, SC-30, and SC-30A; E.D. : 07/01/79
FBFW C-PN' s : 170198 0003 thru 0005, and 0007B
E.D. : 03/15/79 & 01/16/87
FIRM C-PN' s : 170198 0003C thru 0005C, and 0007C
E.D. : 01/16/87
FIS January 16, 1987
WATERWAY MAP TYPE MAP NUMBER MAP DATE DESCRIPTION OF REACH
SALT CREEK REG SC-10 & SC-11 07/01/79 FAY AVENUE TO ELMHURST COUNTRY
FBFW 0004 & 0005 01/16/87 CLUB.
FIRM 0004C & 0005C 01-16-87
WESTWOOD CREEK REG SC-11 & SC-30 07/01/79 CONFLUENCE WITH SALT CREEK TO
FBFW 0004 01/16/87 10, 850 FT. ABOVE CONFLUENCE AT
FIRM 0004C 01/16/87 SOUTH- FORK.
S . FORK REG SC-30 & SC-30A 07/01/79 CONFLUENCE WITH WESTWOOD CREEK
WESTWOOD CREEK FBFW 0004 01/16/87 TO FULLERTON AVENUE AT 5150
FBFW 0007B 03/15/79 FT. ABOVE CONFLUENCE.
FIRM 0004C & 0007C 01/16/87
2-10
* * AURORA
FIRM = C-PN' s: 170320 0015D thru 0030D; E.D. : 01/05/89
FIS = January 5, 1989
WATERWAY MAP TYPE MAP NUMBER MAP DATE DESCRIPTION OF REACH
SELMARTEN CREEK FIRM 0015D 01/05/89 NORTH OF EAST-WEST TOLLWAY
2400' EAST KANE-DUPAGE COUNTY
BOUNDARY
WAUBANSEE CREEK FIRM 0020D & 0025D 01/05/89 KAUTZ RD TO SPRING LAKE
* * BARTLETT
FBFW = C-PN' s: 170059 0005 & 0007; E.D. : 03/15/84
FIRM = C-PN' s: 170059 0003C, 0005C, & 0007C; E.D. 03/15/84
FIS = December 15, 1980
WATERWAY MAP TYPE MAP NUMBER MAP DATE DESCRIPTION OF REACH
BREWSTER CREEK FBFW 0005 & 0007 03/15/84 APPLE VALLEY DRIVE WEST TO
FIRM 0005C & 0007C 03/15/84 MUNGER RD.
COUNTRY CREEK FBFW 0005 & 0007 03/15/84 DEVON AVE. SOUTH TO A POINT
FIRM 0005C & 0007C 03/15/84 SOUTH OF STERNS RD.
2-11
* * BARTLETT - cont.
WATERWAY MAP TYPE MAP NUMBER MAP DATE DESCRIPTION OF REACH
WEST BRANCH FBFW 0007 03/15/84 ACCESS RD. SOUTH OF STERNS RD.
DUPAGE RIVER FIRM 0007C 03/15/84 TO ARMY TRAIL RD.
* * BENSENVILLE
FBFW C-PN' s : 170200 0002B & 0003B; E.D. : 02/04/81
FIRM C-PN' s: 170200 0002B & 0003B; E.D. : 02/04/81
FIS August 4, 1980
WATERWAY MAP TYPE MAP NUMBER MAP DATE DESCRIPTION OF REACH
ADDISON CREEK FBFW 0003B 02/04/81 GEORGE ST. SOUTH TO CORPORATE
FIRM 0003B LIMITS
ADDISON CREEK FBFW 0003B 02/04/81 MARION ST. TO GEORGE ST.
TRIB. NO. 1 FIRM 0003B RESERVOIR
ADDISON CREEK FBFW 0003B 02/04/81 CHURCH RD. TO ADDISON CK.
TRIB. NO 2 FIRM 0003B TRIB. NO. 3 CONFLUENCE
2-12
* * BENSENVILLE - cont.
WATERWAY MAP TYPE MAP NUMBER MAP DATE DESCRIPTION OF REACH
ADDISON CREEK FBFW 0003B 02/04/81 CHURCH ST. TO ADDISON CK.
TRIB. NO. 3 FIRM 0003B TRIB. NO. 2 CONFLUENCE
ADDISON CREEK FBFW 0003B 02/04/81 CHURCH ST. TO ADDISON CK.
TRIB. NO. 4 FIRM 0003B TRIB. NO. 2 CONFLUENCE
BENSENVILLE FBFW 0002B 02/04/81 IRVING PK. RD. NORTH TO
DITCH FIRM 0002B CORPORATE LIMITS
* * BLOOMINGDALE
REG. = SC-32 AND SC-33; E.D. : 07/01/79
FBFW = C-PN' s: 170201 0002B; E.D. : 04/15/81
FIRM = C-PN' s: 170201 0001B & 0002B; E.D. : 04/15/81
FIS October 15, 1980
WATERWAY MAP TYPE MAP NUMBER MAP DATE DESCRIPTION OF REACH
SPRING BROOK REG SC-32 & SC-33 07/01/79 6450 FT. TO 15, 520 FT. ABOVE
CREEK FBFW 0002B 04/15/81 LAKE KADIJAH SPILLWAY.
FIRM 0002B 04/15/81
2-13
* * BLOOMINGDALE - cont.
WATERWAY MAP TYPE MAP NUMBER MAP DATE DESCRIPTION OF REACH
EAST BRANCH FBFW 0002B 04/15/81 SCHICK RD. TO ARMY TRAIL RD.
DUPAGE RIVER FIRM 0002B 04/15/81
WEST BRANCH REG SC-33 07/01/79 CONFLUENCE WITH SPRING BROOK
TRIB. TO SPRING FBFW 0002B 04/15/81 CREEK TO 4125 FT. ABOVE
BROOK CREEK FIRM 0001B & 0002B 04/15/81 CONFLUENCE.
* * BOLINGBROOK
FBFW = C-PN' s : 170812 0001 & 0003; E.D. : 07/16/84
FIRM z C-PN' s : 170812 0001D & 0003D; E.D. : 07/16/84
FIS z July 16, 1984
WATERWAY MAP TYPE MAP NUMBER MAP DATE DESCRIPTION OF REACH
EAST BRANCH FBFW 0003 07/16/84 ROYCE RD. S .W. TO CORPORATE
DUPAGE RIVER FIRM 0003D 07/16/84 LIMITS
2-14
* * BURR RIDGE
FBFW = C-PN' s: 170071 0001; E.D. : 08/02/90
170071 0003; E.D. : 10/15/81
FIRM = C-PN' s: 170071 0001B; E.D. : 08/02/90
170071 0003B & 0005B; E.D. : 10/15/81
FIS Z August 2, 1990
WATERWAY MAP TYPE MAP NUMBER MAP DATE DESCRIPTION OF REACH
63RD STREET FBFW 0001 08/02/90
DITCH FIRM 0001B 08/02/90
79TH STREET FBFW 0003 10/15/81
DITCH FIRM 0003B 10/15/81
PLAINFIELD ROAD FBFW 0001 & 0003 08/02/90
DITCH FIRM 0001B & 0003B 10/15/81
FLAGG CREEK FBFW 0003 08/02/90
FIRM 0001B & 0003B 08/02/90
TRIBUTARY A FBFW 0003 10/15/81
FIRM 0003B 10/15/81
TRIBUTARY B FBFW 0003 10/15/81
FIRM 0003B 10/15/81
TRIBUTARY C FBFW 0003 10/15/81
FIRM 0003B 10/15/81
2-15
* * CAROL STREAM
FBFW C-PN: 170202 0005; E.D. : 01/06/82
FIRM = C-PN: 170202 0005C; E.D. : 01/06/82
FIS z July 6, 1981
WATERWAY MAP TYPE MAP NUMBER MAP DATE DESCRIPTION OF REACH
THUNDERBIRD FBFW 0005 01/06/82
TRAIL CREEK FIRM 0005C 01/06/82
WINFILED CREEK FBFW 0005 01/06/82
FIRM 0005C 01/06/82
KLEIN CREEK FBFW 0005 01/06/82
FIRM 0005C 01/06/82
KLEIN CREEK FBFW 0005 01/06/82
TRIB. 2 FIRM 0005C 01/06/82
KLEIN CREEK FBFW 0005 01/06/82
TRIB. 3 FIRM 0005C 01/06/82
WEST BRANCH FBFW 0005 01/06/82
TRIB. NO. 4 FIRM 0005C 01/06/82
2-16
* * CLARENDON HILLS
FBFW = C-PN: 170203 OOO1B; E.D. : 07/02/80
FIRM = C-PN: 170203 OOO1B; E.D. : 07/02/80
FIS z January 1980
WATERWAY MAP TYPE MAP NUMBER MAP DATE DESCRIPTION OF REACH
FLAGG CREEK FBFW OOO1B 07/02/80
FIRM OOO1B 07/02/80
* * DARIEN
FBFW z C-PN' s: 170750 0001A thru 0003A; E.D. : 02/01/80
FIRM = C-PN' s: 170750 0001A thru 0003A; E.D. : 02/01/80
FIS = August 1979
WATERWAY MAP TYPE MAP NUMBER MAP DATE DESCRIPTION OF REACH
SAWMILL CREEK FBFW 0001A & 0003A 02/01/80 75TH ST. TO CORPORATE LIMITS
FIRM OOO1A & 0003A 02/01/80
SAWMILL CREEK FBFW 0001A & 0003A 02/01/80
TRIB. A FIRM 0001A & 0003A 02/01/80
2-17
* * DARIEN - cont.
WATERWAY MAP TYPE MAP NUMBER MAP DATE DESCRIPTION OF REACH
EAST BRANCH BFW 0002A 02/01/80 67TH ST. TO 75TH ST.
SAWMILL CREEK FIRM 0002A 02/01/80
WEST BRANCH FBFW 0001A, 02/01/80
SAWMILL CREEK FIRM 0003A 02/01/80
TRIB. A OF WEST FBFW 0001A & 0003A 02/01/80
BRANCH SAWMILL FIRM 0001A & 0003A 02/01/80
CREEK
TRIB. B OF WEST FBFW 0001A 02/01/80
BRANCH SAWMILL FIRM 0001A 02/01/80
CREEK
* * DOWNERS GROVE
FBFW C-PN' s : 170204 0002B, 0003, 0004B thru 0006B & 0008B
E.D. ' s: 04/15/81 & 03/15/82
FIRM C-PN' s: 170204 0002B, 0003C, 0004B & 0005B, 0006C & 0008B
E.D. ' s: 04/15/81, 03/15/82 & 10/18/83
FIS November 16, 1981
2-18
* * DOWNERS GROVE - cont.
WATERWAY MAP TYPE MAP NUMBER MAP DATE DESCRIPTION OF REACH
EAST BRANCH FBFW 0003 03/15/82
DUPAGE RIVER FIRM 0003B 03/15/82
PRENTISS CREEK FBFW 0008B 04/15/81
FIRM 0008B 04/15/81
ST. JOSEPH FBFW 0005B & 0006B 04/15/81
CREEK FIRM 0005C & 0006C 04/15/81
N. BR. ST. FBFW 0006B 04/15/81
JOSEPHS CREEK FIRM 0006C 04/15/81
S. BR. ST. FBFW 0006B & 0008B 04/15/81
JOSEPHS CREEK FIRM 0006B & 0008B 04/15/81
LACEY CREEK FBFW 0004B & 0003 04/15/81,
FIRM 0004B & 0003C 03/15/82
04/15/81,
03/15/82
ONE MILE CREEK FBFW 0003 03/15/82
FIRM 0003C 03/15/82
2-19
* * ELMHURST
REG. Z SC-7, SC-8, SC-9, & SC-10; E.D. 07/01/79
FBFW = C-PN' s: 170205 0003B & 0004B; E.D. : 02/04/81
FIRM z C-PN' s: 170205 0003B & 0004B; E.D. : 02/04/81
FIS z August 4, 1980
WATERWAY MAP TYPE MAP NUMBER MAP DATE DESCRIPTION OF REACH
SALT CREEK REG SC-7, SC-8, 07/01/79 FRONTAGE ROAD ALONG ROOSEVELT
SC-9 & SC-10 ROAD AT 76, 700 FT. ABOVE MOUTH
FBFW 0003B & 0004B 02/04/81 TO ADDISON CORPORATE LIMITS
FIRM 0003B & 0004B 02/04/81 ABOVE ROUTE 64 AT 99, 250 FT.
ABOVE MOUTH.
SUGAR CREEK REG SC-8 07/01/79 CONFLUENCE WITH SALT CREEK TO
FBFW 0004B 02/04/81 STATE ROUTE 83 .
.FIRM 0004B 02/04/81
2-20
* * GLEN ELLYN
FBFW = C-PN: 170207 0005; E.D. : 01/22/82
FIRM z C-PN: 170207 0005C; E.D. : 01/22/82
FIS = July 1978
WATERWAY MAP TYPE MAP NUMBER MAP DATE DESCRIPTION OF REACH
EAST BRANCH FBFW 0005 01/22/82
DUPAGE RIVER FIRM 0005C 01/22/82
* * GLENDALE HEIGHTS
FBFW z C-PN: 170206 0001; E.D. : 01/01/82
FIRM z C-PN: 170206 OOO1C; E.D. : 01/01/82
FIS = February 1978
WATERWAY MAP TYPE MAP NUMBER MAP DATE DESCRIPTION OF REACH
EAST BRANCH FBFW 0001 01/01/82
DUPAGE RIVER FIRM OOO1C 01/01/82
EAST BRANCH FBFW 0001 01/01/82 SOUTH OF NORTH AVE. & WEST OF
TRIB. NO. 2 FIRM OOO1C 01/01/82 MAIN ST.
2-21
* * GLENDALE HEIGHTS - cont.
WATERWAY MAP TYPE MAP NUMBER MAP DATE DESCRIPTION OF REACH
ARMITAGE DITCH FBFW 0001 01/01/82
FIRM 0001C 01/01/82
ARMITAGE FORK FBFW 0001 01/01/82
FIRM 0001C 01/01/82
KLEIN CREEK FBFW 0001 01/01/82
FIRM 0001C 01/01/82
* * HANOVER PARK
FBFW z C-PN: 170099 0005B; E .D. : 11/15/78
FIRM = C-PN: 170099 0005B; E.D. : 11/15/78
FIS = May 1978
WATERWAY MAP TYPE MAP NUMBER MAP DATE DESCRIPTION OF REACH
WEST BRANCH FBFW 0005B 11/15/78 LAKE ST. TO 800FT. WEST
DUPAGE RIVER FIRM 0005B 11/15/78 JEFFERSON ST.
2-22
* * HINSDALE
REG. = SC-4; E.D. : 07/01/79
FBFW = C-PN' s: 170105 0002B thru 0004B; E.D. : 01/16/81
FIRM = C-PN' s: 170105 0002B thru 0004B; E.D. : 01/16/81
FIS z July 16, 1980
WATERWAY MAP TYPE MAP NUMBER MAP DATE pESCRT TTON OF REACH
SALT CREEK REG SC-4 07/01/79 47, 150 FT. ABOVE MOUTH TO YORK
FBFW 0004B 01/16/81 ROAD AT 51, 750 FT. ABOVE
FIRM 0004B 01/16/81 MOUTH.
BRONSWOOD FBFW 0002B 01/16/81 4200 FT. TO 7800 FT. ABOVE
CEMETARY TRIB. FIRM 0002B 01/16/81 MOUTH AT RTE. 83.
59TH STREET FBFW 0003B 01/16/81 36, 050 FT. TO 38, 925 FT. ABOVE
DITCH FIRM 0003E 01/16/81 MOUTH.
FLAG CREEK FBFW 0002B & 0004B 01/16/81
FIRM 0002B & 0004B 01/16/81
2-23
* * ITASCA
REG. = SC-13, SC-14, SC-29, SC-32 & SC-34; E.D. : 07/01/79
FBFW z C-PN' s: 170210 0002B & 0003B; E.D. : 11/02/77
FIRM = C-PN' s : 0002B & 0003B; E.D. : 11/02/77
FIS = November 1977
WATERWAY MAP TYPE MAP NUMBER MAP DATE DESCRIPTION OF REACH
SALT CREEK REG SC-13 & SC-14 07/01/79 23 . 9 MI . ABOVE MOUTH TO
FBFW 0003B 11/02/77 THORNDALE AVENUE AT 25. 4 MI .
FIRM 0003B 11/02/77 ABOVE MOUTH.
MEACHAM CREEK REG SC-32 & SC-34 07/01/79 THORNDALE AVENUE TO MEDIHAN
FBFW 0002B 11/02/77 ROAD.
FIRM 0002B 11/02/77
SPRING BROOK REG SC-13 & SC-29 07/01/79 CONFLUENCE WITH SALT CREEK TO
FBFW 0002B & 0003B 11/02/77 2 .79 MI . ABOVE CONFLUENCE.
FIRM 0002B & 0003B 11/02/77
DEVON AVENUE FBFW 0003B 11/02/77 28, 000 FT. TO 59, 500 FT. ABOVE
TRIB. FIRM 0003B 11/02/77 MOUTH.
2-24
* * LISLE
FBFW = C-PN: 170211 0005B; E.D. : 09/17/80
FIRM = C-PN: 170211 0005B; E.D. : 09/17/80
FIS ru March 1980
WATERWAY MAP TYPE MAP NUMBER . MAP DATE DESCRIPTION OF REACH
EAST BRANCH FBFW 0005B 09/17/80
DUPAGE RIVER FIRM 0005B 09/17/80
ST. JOSEPH FBFW 0005B 09/17/80
CREEK FIRM 0005B 09/17/80
ST. JOSEPH FBFW 0005B 09/17/80 E-W TOLLWAY TO ST. JOSEPH
TRIG. NO. 1 FIRM 0005B 09/17/80 CREEK CONFLUENCE
ST. JOSEPH FBFW 0005B 09/17/80
TRIB. NO. 2 FIRM 0005B 09/17/80
ROTT CREEK FBFW 0005B 09/17/80 NAPERVILLE RD. TO E. BRANCH
FIRM 0005B 09/17/80 DUPAGE RIVER CONFLUENCE
EAST BRANCH FBFW 0005B 09/17/80 YACKLEY AVE. TO E. BRANCH
DUPAGE RIVER FIRM 0005B 09/17/80 DUPAGE RIVER CONFLUENCE
TRIB. NO. 3
TRIBUTARY 4 FBFW 0005B 09/17/80
(WILLOWAY FIRM 0005B 09/17/80
BROOK)
2-25
* * LISLE - cont.
WATERWAY MAP TYPE MAP NUMBER MAP DATE DESCRIPTION OF REACH
ST. PROCOPIUS FBFW 0005B 09/17/80
CREEK FIRM 0005B 09/17/80
* * LOMHARD
FBFW C-PN: 170212 0005B; E.D. : 10/17/78
FIRM C-PN: 170212 0005B; E.D. : 10/17/78
FIS April 1978
WATERWAY MAP TYPE MAP NUMBER MAP DATE DESCRIPTION OF REACH
EAST BRANCH FBFW 0005B 10/17/78
DUPAGE RIVER FIRM 0005B 10/17/78
UNNAMED STREAM FBFW 0005B 10/17/78
N. OF 22ND ST. FIRM 0005B 10/17/78
2-26
* * NAPERVILLE
FIRM z C-PN' s : 170213 OOO1C thru 00023C; E.D. : 05/23/92
FIS = May 18, 1992
WATERWAY MAP TYPE MAP NUMBER MAP DATE DESCRIPTION OF REACH
WEST BRANCH FIRM OOO1C, 0002C, 0006C, 05/18/92
DUPAGE RIVER 0007C, 0012C, 0013C,
0017C
CRESS CREEK FIRM 0007C, 0008C, 0012C 05/18/92
SPRING BROOK FIRM OO11C, 0012C, 0013C, 05/18/92
0015C, 0016C
UNNAMED CK. S . FIRM 0017C 05/18/92
OF FOXCROFT
UNNAMED SOUTH FIRM 0017C 05/18/92
OF 87TH
WINDING CREEK FIRM 0016C, 0017C 05/18/92
2-27
* * OAKBROOK
REG. SC-4, SC-5, SC-6, SC-6A, SC-6B, SC-6C & AC-7; E.D. : 07/01/79
FBFW C-PN' s: 170214 OOO1B thru 0004B; E.D. : 02/18/81
FIRM C-PN' s: 170214 OOO1B thru 0004B; E.D. : 02/18/81
FIS August 18, 1980
WATERWAY MAP TYPE MAP NUMBER MAP DATE DESCRIPTION OF REACH
BRONSWOOD FBFW 0004B 02/18/81 CONFLUENCE WITH SALT CREEK TO
CEMETARY TRIB. FIRM 0004B 02/18/81 6860 FT. ABOVE CONFLUENCE.
GINGER CREEK REG SC-6, SC-6A, 07/01/79 CONFLUENCE WITH SALT CREEK TO
SC-6B & SC-6C MEYERS ROAD AND 11, 500 FT. TO
FBFW OOO1B thru 0004B 02/18/81 17, 700 FT. ABOVE CONFLUENCE.
FIRM OOO1B thru 0004B 02/18/81
SALT CREEK REG SC-4, SC-5, 07/01/79 SOUTHER CORPORATE LIMITS AT
SC-6 & SC-7 DUPAGE/COOK BOUNDARY TO
FBFW OOO1B, 0002B 02/18/81 ROOSEVELT ROAD.
& 0004B
FIRM OOO1B, 0002B 02/18/81
& 0004B
SPRING ROAD FBFW OOO1B & 0002B 02/18/81 CONFLUENCE WITH SALT CREEK TO
TRIB. FIRM OOO1B & 0002B 02/18/81 3300 FT. ABOVE CONFLUENCE AND
8900 FT. ABOVE CONFLUENCE TO
MIDWEST ROAD.
2-28
* * OAKBROOK TERRACE
REG. SC-6 & SC-7; E.D. : 07/01/79
FBFW C-PN: 170215 OOO1B; E.D. : 02/18/81
FIRM C-PN: 170215 OOO1B; E.D. : 02/18/81
FIS August 18, 1980
WATERWAY MAP TYPE MAP NUMBER MAP DATE DESCRIPTION OF REACH
SPRING ROAD FBFW OOO1B 02/18/81 ROUTE 83 TO EISENHOWER EXPWY.
TRIB. FIRM OOO1B 02/18/81
SALT CREEK REG SC-6 & SC-7 07/01/79 75, 320 FT. TO 76, 680 FT . ABOVE
FBFW OOO1B 02/18/81 MOUTH.
FIRM OOO1B 02/18/81
2-29 1
* * ROSELLE
REG. z SC-32 & SC-33; E.D. : 07/01/79
FBFW = C-PN' s: 170216 0002B & 0004B; E.D. : 05/19/81
FIRM C-PN' s: 170216 0002B & 0004B; E.D. : 05/19/81
FIS November 19, 1980
WATERWAY MAP TYPE MAP NUMBER MAP DATE DESCRIPTION OF REACH
SPRING BROOK REG SC-32 & SC-33 07/01/79 14, 250 FT. TO 24, 500 FT. ABOVE
FBFW 0002B & 0004B 05/19/81 LAKE KADIJAH SPILLWAY.
FIRM 0002B & 0004B 05/19/81
WEST BRANCH FBFW 0002B 05/19/81
MEACHAM CREEK FIRM 0002B 05/19/81
WEST BRANCH FBFW 0004B 05/19/81
TRIBUTARY FIRM 0004B 05/19/81
2-30
* * VILLA PARK
REG. = SC-8, SC-8A, SC-9 & SC-10; E.D. : 07/01/79
FBFW z C-PN' s : 170217 0001B thru 0003B; E.D. : 02/04/81
FIRM z C-PN' s : 170217 0001B thru 0003B; E.D. : 02/04/81
FIS = August 4, 1980
WATERWAY MAP TYPE MAP NUMBER MAP DATE DESCRIPTION OF REACH
SALT CREEK REG SC-8, SC-9 & 07/01/79 SC-8, 9 MADISON STREET TO ST.
SC-10 CHARLES ROAD. SC-10 ROUTE 64
FBFW 0001B & 0002B 02/04/81 TO LORRAINE ROAD.
FIRM 0001B & 0002B 02/04/81
SUGAR CREEK REG SC-8 & SC-8A 07/01/79
02
FBFW 0002B & 0003B /04/81 MOUTH TO 12, 000
FIRM 0002E & 0003B 02/04/81 MOUTH.
SUGAR CREEK FBFW 0003B 02/04/81 CONFLUENCE WITH SUGAR CREEK TO
TRIB. A FIRM 0003B 02/04/81 1850 FT. ABOVE CONFLUENCE.
2-31
i
* * WARRENVILLE
FBFW C-PN's : 170218 0001 & 0002; E.D. : 10/18/83
FIRM C-PN' s: 170218 0001B & 0002B; E.D. : 10/18/83
FIS March 1978
WATERWAY MAP TYPE MAP NUMBER M&F DATE DESCRIPTION OF REACH
WEST BRANCH FBFW 0001 & 0002 10/18/83
DUPAGE RIVER FIRM 0001B & 0002B 10/18/83
FERRY CREEK FBFW 0001 & 0002 10/18/83
FIRM 0001B & 0002B 10/18/83
SPRING BROOK FBFW 0001 10/18/83
FIRM 0001B 10/18/83
* * WAYNE
FBFW C-PN' s: 170865 0002 & 0004; E.D. : 12/01/81
FIRM C-PN' s : 170865 0002A & 0004A; E.D. : 12/01/81
FIS June 1, 1981
2-32
* * WAYNE - cont.
WATERWAY MAP TYPE MAP NUMBER MAP DATE nFSQRTPTTON OF REACH
NORTON CREEK FBFW 0004 12/01/81
FIRM 0004A 12/01/81
NORTON CREEK FBFW 0002 & 0004 12/01/81
TRIBUTARY FIRM 0002A & 0004A 12/01/81
* * WEST CHICAGO
FBFW z C-PN: 170219 0005; E.D. : 08/19/87
FIRM = C-PN' s : 170219 0005E; E.D. : 08/19/87
FIS z August 19,1987
WATERWAY MAP TYPE MAP NUMBER MAP DATE DESCRTPTTON OF REACH
WEST BRANCH FBFW 0005 08/19/87
DUPAGE RIVER FIRM 0005E 08/19/87
KRESS CREEK FBFW 0005 08/19/87
FIRM 0005E 08/19/87
UNNAMED TRIB. FBFW 0005 08/19/87
TO KRESS CREEK FIRM 0005E 08/19/87
2-33 R
1
* * WESTMONT
FBFW z C-PN: 170220 0001; E.D. : 01/16/81
FIRM z C-PN' s : 170220 OOO1B thru 0003B; E.D. : 01/16/81
FIS = July 16, 1980
WATERWAY MAP TYPE MAP NUMBER MAP DATE DESCRIPTION OF R .A .H
ST. JOSEPH FBFW 0001 01/16/81
CREEK FIRM OOO1B 01/16/81
ST. JOSEPH FBFW 0001 01/16/81
CREEK TRIB. FIRM OOO1B 01/16/81
* * WHEATON
FBFW z C-PN: 170221 0005B; E.D. : 06/15/79
FIRM z C-PN: 170221 0005B; E.D. : 06/15/79
FIS z December 1978
WATERWAY MAP TYPE MAP NUMBER MAP DATE DESCRIPTION OF REACH
WINFIELD CREEK FBFW 0005B 06/15/79
FIRM 0005B 06/15/79
2-34
* * WHEATON - cont.
WATERWAY MAP TYPE MAP NUMBER MAP DATE nFSCRTPTTON OF REACH
WINFIELD CREEK FBFW 0005B 06/15/79
TRIB. FIRM 0005B 06/15/79
SPRING BROOK FBFW 0005B 06/15/79
FIRM 0005B 06/15/79
* * WILLOWBROOK
FBFW C-PN' s : 170222 0001 & 0002; E.D. : 09/30/83
FIRM = C-PN' s: 170222 OOO1C & 0002C; E.D. : 09/30/83
FIS = July 1979
WATERWAY MAP TYPE MAP NUMBER MAP DATE DROCRTPTTON OF ER ACH
63RD STREET FBFW 0002 09/30/83
DITCH FIRM 0002C 09/30/83
EAST BRANCH FBFW 0001 09/30/83
SAWMILL CREEK FIRM OOO1C 09/30/83
MARION HILLS FBFW 0002 09/30/83
DITCH FIRM 0002C 09/30/83
2-35
I
y
* * WINFIELD
FBFW z C-PN: 170223 0001; E.D. : 10/18/83
FIRM = C-PN: 170223 0001C; E.D. : 10/18/83
FIS = August 1978
WATERWAY MAP TYPE MAP NUMBER MAP DATA DESCRIPTION OF REACH
WEST BRANCH FBFW 0001 10/18/83
DUPAGE FIRM 0001C 10/18/83
WINFIELD CREEK FBFW 0001 10/18/83
FIRM 0001C 10/18/83
* * WOOD DALE
REG. z SC-12, SC-13 & SC-14; E.D. : 07/01/79
FBFW = C-PN' s: 170224 0001 & 0002; E.D. : 07/30/82
FIRM = C-PN' s : 170224 0001C & 0002C; E. D. : 07/30/82
FIS = September 1977
2-36
* * WOOD DALE - cont.
WATERWAY MAP TYPE MAP NUMBER MAP DATE DESCRIPTION OF REACH
SALT CREEK REG SC-12, SC-13 & 07/01/79 ELMHURST COUNTY CLUB TO
SC-14 THORNDALE ROAD.
FBFW 0001 & 0002 07/30/82
FIRM 0001C & 0002C 07/30/82
SPRING BROOK FBFW 0001 07/30/82
FIRM 0001C 07/30/82
* * WOODRIDGE
FBFW = C-PN' s : 170224 0001A & 0003A; E.D. : 06/15/79
FIRM = C-PN' s: 170224 0001A & 0003A; E.D. : 06/15/79
FIS = December 1978
WATERWAY MAP TYPE MAP NUMBER MAP DATE DESCRIPTION OF REACH
CRABTREE CREEK FBFW 0003A 06/15/79
FIRM 0003A 06/15/79
EAST BRANCH FBFW 0001A 06/15/79
DUPAGE RIVER FIRM 0001A 06/15/79
PRENTISS CREEK FBFW 0001A 06/15/79
FIRM 0001A 06/15/79
2-37
r
s
t
t
* * WOODRIDGE - cont.
WATERWAY MAP TYPE MAP NUMBER MAP DATE DESCRIPTION OF REACH
PRENTISS CREEK FBFW 0001A 06/15/79
TRIB. 1 FIRM 0001A 06/15/79
PRENTISS CREEK FBFW 0001A 06/15/79
TRIB. 2 FIRM 0001A 06/15/79
LEGEND:
Reg - Illinois Department of Transportation Division of Water Resources Regulatory
Floodplain Lower Salt Creek Maps .
FBFW - Federal Emergency Management Agency flood Boundary and Floodway Maps .
FIRM - Federal Emergency Management Agency Flood Insurance Rate Maps .
FIS - Flood Insurance Studies .
C-PN - Community-Panel Number
E.D. - Effective Date
* - See LOMR or LOMA
** Note **
1 . ) LOMA' s and LOMR' s are available at the County, Department of Environmental Concerns .
2 . ) LOMA' s and LOMR' s may have been obtained which will effect flood elevations and limits,
and/or floodway locations . The local communities will have records of these changes .
2-38