(A) Specific projects or activities may be exempt from all or part of the informational requirements listed below. Exemptions are detailed in §§ 152.020, 152.040, 152.060, and 152.075. If a project or activity is exempt from any or all requirements of this chapter, an application should be filed listing the exemption criteria met, in lieu of the information requirements listed below. This level of detailed information is not required from individual lots, disturbing less than one acre of land, developed within a larger permitted project site. Review and acceptance of such lots is covered under § 152.093.
(B) The different elements of a permit/approval submittal for a secondary stormwater plan approval include an application form, proof of publication of a public notice, construction plans, a stormwater drainage technical report, a stormwater pollution prevention plan for active construction sites, a post-construction stormwater pollution prevention plan, and any other necessary supporting information. All plans, reports, calculations, and narratives shall be signed and sealed by a professional engineer or a licensed surveyor, registered in the State of Indiana who also meets the definition of a trained individual found in § 152.007.
(1) Application form. As part of the county stormwater management permit application package, the application form provided in the Technical Standards Manual shall be completed by the applicant and provided along with other required supporting material.
(2) Construction plans. Construction plan sheets and an accompanying narrative report shall describe and depict the existing and proposed conditions. Note that in order to gain an understanding of and to evaluate the relationship between the proposed improvements for a specific project section/phase and the proposed improvements for an overall multi-section (phased) project, the detailed information requested herein for the first section/phase being permitted shall be accompanied by an overall project plan that includes the location, dimensions, and supporting analyses of all detention/retention facilities, primary conveyance facilities, and outlet conditions. Construction plans need to include items listed in the required information list provided in the Hendricks County Stormwater Technical Standards Manual.
(3) Stormwater drainage technical report. A written stormwater drainage technical report shall contain a discussion of the steps taken in the design of the stormwater drainage system. Note that in order to gain an understanding of and to evaluate the relationship between the proposed improvements for a specific project section/phase and the proposed improvements for an overall multi-section (phased) project, the detailed information requested herein for the first section/phase being permitted shall be accompanied by an overall project plan that includes the location, dimensions, and supporting analyses of all detention/retention facilities, primary conveyance facilities, and outlet conditions. The technical report needs to include items listed in the required information list provided in the Hendricks County Stormwater Technical Standards Manual.
(4) Stormwater pollution prevention plan for construction sites. For sites with total disturbance of land in an amount that would be governed by this chapter, a stormwater pollution prevention plan associated with construction activities shall be designed to, at least, meet the requirements of this chapter. For land disturbances totaling less than one acre but greater than an amount that would be governed by this chapter, appropriate erosion and sediment control measures that are consistent with the Hendricks County Technical Standards shall be designed and shown on the plans. The SWPPP shall include items listed in the required information list provided in the Hendricks County Stormwater Technical Standards Manual.
(5) Post-construction storm water pollution prevention plan. For sites with total disturbance of land in an amount that would be governed by this chapter, a post-construction stormwater pollution prevention plan shall be designed to, at least, meet the requirements of this chapter and shall include the information provided in the Hendricks County Stormwater Technical Standards Manual. The post-construction storm water pollution prevention plan shall include items listed in the required information list provided in the Hendricks County Stormwater Technical Standards Manual.
(6) Operation and maintenance manual. An operations and maintenance (O&M) manual for all private infrastructure, including but not limited to pipes, ponds, ditches, and BMPs (when required), shall be submitted for the final plan approval and permit process. The detailed requirements for O&M manual are provided in the Hendricks County Stormwater Technical Standards Manual.
(7) Maintenance agreement. A formal BMP maintenance agreement will need to be prepared and notarized consistent with the sample agreement provided in the Hendricks County Stormwater Technical Standards Manual, providing for the long-term maintenance of those BMPs. This maintenance agreement shall be recorded with the deed for the property on which the project is located.
(Ord. 2023-45, passed 12-12-2023)