(A) The stormwater management plan shall include sufficient information to allow the County Planning and Zoning Department to evaluate the environmental characteristics of the project site, the potential impacts of all proposed development of the site, both present and future, on the water resources, and the effectiveness and acceptability of the measures proposed for managing stormwater generated at the project site.
(B) To accomplish this goal, the stormwater management plan shall be prepared in accordance with the county storm drainage policy and include the following:
(1) Soils information; when a stormwater management control measure depends on the hydrologic properties of soils (e.g., infiltration basins), then a soils report shall be prepared by a qualified person and submitted with the plan. The soils report shall be based upon on-site boring logs or soil pit profiles and soil survey reports. The number and location of required soil borings or soil pits shall be determined based on what is needed to determine the suitability and distribution of soil types present at the location of the control measure;
(2) A permanent elevation benchmark shall be identified in the plans to assist in the periodic inspection of the facility using the North American Vertical Datum of 1988 (NAVD);
(3) A landscaping plan detailing the revegetation of the site after the construction is finished as set forth in § 152.39;
(4) A maintenance plan for all stormwater management facilities to ensure the continued performance of the facilities subject to the approval of the County Planning and Zoning Department. The plan shall:
(a) Identify the parts or components of the facilities that need to be maintained and inspected;
(b) Provide detailed maintenance and repair procedures for the facilities;
(c) Identify necessary training, skills, or certifications that may be required to maintain, operate, or repair any of the facilities;
(d) Provide that the minimum maintenance and repair needs include but are not limited to:
1. The removal of silt, litter, landscape wastes, and other debris which adversely impact the effectiveness of the facilities;
2. The management of landscaped areas integral to the facilities including the cutting of grass, trimming of bushes and trees or the removal of vegetation overgrowth that is not incorporated into the stormwater management plan;
3. The replacement of landscape vegetation and damaged or failed facilities;
4. The cleaning of storm drainage inlets, pipes, and structures; and
5. Revising and implementing revisions or additional maintenance procedures to address inadequacies of the facilities.
(e) Provide for the regular periodic review, inspection, and evaluation of the effectiveness of the maintenance program by qualified personnel for the purpose of documenting maintenance needs. The reviews and inspections shall be conducted at least once every year after the construction is finished;
(f) Provide for established reporting procedures; and
(g) Provide that maintenance needs are addressed in a timely manner.
(5) An executed maintenance agreement as agreed to by the County Planning and Zoning Department that assigns the responsibility for compliance with the maintenance plan required in division (B)(4) of this section to the owner of the property on which the stormwater facilities are located to ensure compliance with the purpose and requirements of this chapter. The agreement shall be a part of the owner’s declaration and by appropriate notation referenced on the plat and:
(a) Include as part of the agreement the maintenance plan as approved by the County Planning and Zoning Department;
(b) Provide that the property owner will arrange to have the periodic inspection of the stormwater facilities specified in the maintenance plan conducted by a qualified person who will submit a sealed report of the inspection to the County Planning and Zoning Department;
(c) Grant permission to the County Planning and Zoning Department to enter the property at reasonable times and inspect the stormwater facility to ensure that it is being properly maintained;
(d) Provide that the property owner shall be responsible for additional maintenance needs consistent with the needs and standards outlined in the Illinois Urban Manual;
(e) Provide that maintenance needs must be addressed in a timely manner, on a schedule determined by the County Planning and Zoning Department; and
(f) Provide that if the property is not maintained in compliance with the approved schedule, the County Planning and Zoning Department shall have the authority to have the maintenance work performed at the county’s expense and bill the same to the property owner, which shall be a lien against the property.
(6) Dedication of easements necessary to ensure access to the site for the purpose of maintenance and inspection of the stormwater management facilities. These easements must be binding on the current property owner and all subsequent owners of the property and must be properly recorded as a commitment against the property; and
(7) The county shall have the discretion to accept the dedication of any existing or future stormwater management facility, provided the facility meets the requirements of this chapter, and includes adequate and perpetual access and sufficient areas, by easement or otherwise, for inspection and regular maintenance. Any stormwater facility accepted by the county must also meet the county’s construction standards and any other standards and specifications that apply to the particular stormwater facility in question.
(Res. O-62-9-06, passed 9-14-2006; Ord. O-134-12-19, passed 12-12-2019)