(A) Specific projects or activities may be exempt from all or part of the informational requirements listed below. Exemptions are detailed in the “Applicability and Exemptions” sections of divisions (B)(2) through (B)(5) below. 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 1 acre of land, developed within a larger permitted project site.
(B) The different elements of a permit submittal include an application checklist, 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 § 52B.005.
(1) Application checklist. As part of the city stormwater management permit application package, the application checklist provided in the City of Washington Stormwater Technical Standards Manual must be completed by the applicant and provided along with other required supporting material.
(2) Construction plans. Construction plan sheets (larger than 11 inches by 17 inches, but not to exceed 24 inches by 36 inches in size) 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 must 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 must include items listed in the application checklist provided in the City of Washington Stormwater Technical Standards Manual.
(3) Stormwater drainage technical report. A written stormwater drainage technical report must 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 must 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 application checklist provided in the City of Washington Stormwater Technical Standards Manual.
(4) Stormwater pollution prevention plan for construction sites. For sites with total disturbance of 1 acre or more, a stormwater pollution prevention plan associated with construction activities must be designed to, at least, meet the requirements of this chapter. The SWPPP and construction plans must include the items listed in the application checklist provided in the City of Washington Stormwater Technical Standards Manual. For land disturbances totaling 10,000 square feet or more of land area but less than 1 acre, appropriate erosion and sediment control measures must be implemented.
(5) Post-construction stormwater pollution prevention plan. For sites with total land disturbance of more than 1 acre, a post-construction stormwater pollution prevention plan must be designed to, at least, meet the requirements of this chapter and must include the information provided in the City of Washington Stormwater Technical Standards Manual. The post-construction stormwater pollution prevention plan must include items listed in the application checklist provided in the City of Washington Stormwater Technical Standards Manual.
(Ord. 10-2024, passed 7-8-2024)