A. 
This chapter applies to the City, within incorporated areas.
B. 
The administration and enforcement of this chapter shall be performed by the City of Crystal Lake Community Development Department.
A. 
Refer to the Regulated Development Flowchart in Appendix 1.[1]
[1]
Editor's Note: Appendix 1 is included as an attachment to this chapter.
B. 
No person, firm, corporation or governmental agency, unless specifically exempted, shall commence any regulated development without first obtaining a stormwater management permit. Unless it is specifically exempted in § 595-6, any activity that meets any of the following criteria is considered regulated development:
[Amended 9-6-2016 by Ord. No. 7290; 11-17-2020 by Ord. No. 7671]
(1) 
Any development that is located partially or completely in a flood hazard area; or
(2) 
Any development located partially or completely within the boundary of a wetland or waters; or
(3) 
Any development that hydrologically disturbs 5,000 square feet or more; or
(4) 
Any development that hydrologically disturbs 50% or more of a parcel; or
(5) 
Any development that results in an additional 20,000 square feet of impervious area since the effective date of this chapter; or
(6) 
Any development on a lot or parcel of land platted after December 1, 2015, that results in impervious area exceeding the design parameters of an existing stormwater management facility; or
(7) 
Any development that occurs within a deed or plat restriction or alters a stormwater management system from its original design or permitted conditions; or
(8) 
Any development that modifies the permitted development between the date of permit issuance and prior to the permit expiration date; or
(9) 
Any permitted development that is not completed prior to the permit expiration date; or
(10) 
Any development that is part of a larger common plan of development that, as a whole, would constitute regulated development.
Development that consists solely of the following activities shall be exempt from the requirements of this chapter, upon review and verification by the enforcement officer:
A. 
Maintenance of existing buildings outside the floodplain;
B. 
Maintenance of existing buildings within the floodplain that does not constitute a substantial improvement;
C. 
Maintenance of existing roads and trails;
D. 
Other maintenance activities;
E. 
Gardening and landscaping that does not involve filling, grading, or the construction of berms;
F. 
Tillage and similar agricultural practices that do not involve filling, grading or the construction of levees;
G. 
Improvements undertaken pursuant to a written NRCS Conservation Plan, when the improvements are not located within a flood hazard area, WOTUS, or IWMC;
H. 
Demolition and accompanying restoration, including the removal of bridges and culverts, provided that:
(1) 
Natural land contours are restored;
(2) 
The disturbed area is less than one acre; and
(3) 
Appropriate soil erosion and sediment control practices are utilized;
I. 
Installation, repair or replacement of an on-site waste disposal system, well, sewer or water service line, or other utility service line serving one existing building, provided that:
(1) 
The activity is not located partially or completely in a flood hazard area or a wetland;
(2) 
The disturbed area is less than one acre;
(3) 
The activity does not result in an increase in ground elevation; and
(4) 
Appropriate soil erosion and sediment control practices are utilized.
A. 
Regulated development that received one or more of the approvals set forth in Subsection A(1) through (5) below prior to January 1, 2005, shall be exempt from the buffer areas performance standards of this chapter and may be exempt from the runoff rate reduction of this chapter, upon review by the enforcement officer that the regulated development is consistent with the prior approval. An applicant's written exemption request shall itemize each provision for which an exemption is requested.
(1) 
Annexation agreement (for the duration of the agreement).
(2) 
Final plat of subdivision.
(3) 
Planned unit development.
(4) 
Special use permit.
(5) 
Administrative or minor plats.
(6) 
Replat of an industrial subdivision.
(7) 
Replat of a commercial subdivision.
B. 
Mining development that received a conditional use permit prior to January 1, 2005, shall be exempt from the buffer areas performance standards of this chapter and shall be exempt from the compensatory storage requirements of this chapter for fill outside the floodway, upon review and authorization by the enforcement officer. The enforcement officer may give credit toward meeting the compensatory storage requirements for excavation prior to January 1, 2005, and after September 30, 1981, which was the effective date of the first FIRM in McHenry County. An applicant's written exemption request shall itemize each chapter provision for which an exemption is requested.
C. 
A public road development in a floodway shall be exempt from the BFE determination requirements of this chapter, provided IDOT/DOH issues a floodway construction permit for the public road development.
D. 
Portions of a development site that do not drain off site may be exempt from the soil erosion and sediment control performance standards of this chapter.
TABLE 1
Regulation of Routine Projects
[Amended 9-6-2016 by Ord. No. 7290; 8-15-2017 by Ord. No. 7391; 11-17-2020 by Ord. No. 7671]
Project Type
Exempt
General Permit
Individual Permit
Building maintenance
Refer to Appendix 12: Maintenance of Existing Buildings
N/A
Refer to Appendix 12: Substantial Improvement
New single-family home
N/A
Refer to § 595-10, General Permit 2
All other development regulated by § 595-5
Road maintenance
Refer to Appendix 12: Maintenance of Roads and Trails
Refer to § 595-9, General Permit 1
All other development regulated by § 595-5
Trails
Refer to Appendix 12: Maintenance of Roads and Trails
Refer to § 595-9, General Permit 1
All other development regulated by § 595-5
Driveways
Refer to Appendix 12: Other Maintenance Activities
Refer to § 595-9, General Permit 1
All other development regulated by § 595-5
Parking lots
Refer to Appendix 12: Other Maintenance Activities
N/A
All other development regulated by § 595-5
Culverts, storm sewers, and drain tiles
Refer to Appendix 12: Other Maintenance Activities
Refer to § 595-9, General Permit 1
All other development regulated by § 595-5
Bridges
Refer to Appendix 12: Other Maintenance Activities
Refer to § 595-9, General Permit 1
All other development regulated by § 595-5
Dredging
Refer to Appendix 12: Other Maintenance Activities
Refer to § 595-9, General Permit 1
All other development regulated by § 595-5
Removal of an obstruction
Refer to Appendix 12: Other Maintenance Activities
Refer to § 595-9, General Permit 1
All other development regulated by § 595-5
Stormwater management facilities
Refer to Appendix 12: Other Maintenance Activities
N/A
All other development regulated by § 595-5
Gardening and landscaping
Refer to § 595-6, Exempted Development
N/A
All other development regulated by § 595-5
Tillage and similar agricultural practices
Refer to § 595-6, Exempted Development
N/A
All other development regulated by § 595-5
Implementing a NRCS conservation plan
Refer to § 595-6, Exempted Development
N/A
All other development regulated by § 595-5
Demolition
Refer to § 595-6, Exempted Development
N/A
All other development regulated by § 595-5
On-site waste disposal systems and wells
Refer to § 595-6, Exempted Development
Refer to § 595-9, General Permit 1
All other development regulated by § 595-5
Sewer and water service lines
Refer to § 595-6, Exempted Development
N/A
All other development regulated by § 595-5
Underground and overhead utilities
Refer to Appendix 12: Other Maintenance Activities
Refer to § 595-9, General Permit 1
All other development regulated by § 595-5
Seawalls
N/A
Refer to § 595-9, General Permit 1
All other development regulated by § 595-5
Shoreline and stream bank stabilization
N/A
Refer to § 595-9, General Permit 1
All other development regulated by § 595-5
Boat docks
N/A
Refer to § 595-9, General Permit 1
All other development regulated by § 595-5
Signposts, poles fencing, and guardrails
N/A
Refer to § 595-9, General Permit 1
All other development regulated by § 595-5
Decks
N/A
Refer to § 595-9, General Permit 1
All other development regulated by § 595-5
Pools
N/A
Refer to § 595-9, General Permit 1
All other development regulated by § 595-5
Material storage
N/A
Refer to § 595-9, General Permit 1
All other development regulated by § 595-5
Wetland restoration and enhancement
N/A
Refer to § 595-9, General Permit 1
All other development regulated by § 595-5
Watershed benefit measure
N/A
Refer to § 595-9, General Permit 1
All other development regulated by § 595-5