(A) 
Applicability. The City of Angola will require a stormwater pollution prevention plan (SWPPP), which includes erosion and sediment control measures and materials handling procedures, to be submitted as part of a project's construction plans and specifications. This section applies to development and redevelopment within the City of Angola city limits with a projected land disturbance of one acre or more, and operations that result in the land disturbance of less than one acre of total land area that are part of a larger common plan of development or sale. AMC § 13.15.620 provides guidelines for calculating land disturbance and additional descriptions of construction activities.
(1) 
Land-disturbing activities for the construction of the following agricultural operations must obtain permit coverage:
(a) 
Barns.
(b) 
Buildings to house livestock.
(c) 
Roads associated with infrastructure.
(d) 
Agricultural waste lagoons and other facilities.
(e) 
Lakes, ponds and impoundments.
(f) 
Wetlands constructed voluntarily or as mitigation.
(g) 
Other infrastructure.
(B) 
Exemptions. The requirements under this chapter do not apply to the following activities, provided other applicable state permits contain provisions requiring immediate implementation of soil erosion control measures:
(1) 
Agricultural land-disturbing activities, including tillage, planting, cultivation, or harvesting operations to produce agricultural or nursery and vegetative crops, pasture renovation and establishment, the construction of agricultural conservation practices, and the installation and maintenance of agricultural drainage tile.
(2) 
Silvicultural activities associated with nonpoint discharges (40 CFR 122.27).
(3) 
Stormwater discharges associated with oil and gas exploration, production, processing or treatment operations, or transmission facilities (40 CFR 122.26).
(4) 
Ditch maintenance for activities performed on a regulated drain by a county drainage board as defined in this chapter and IC 36-9-27.
(5) 
The land-disturbing activities listed below, provided other applicable permits contain provisions requiring immediate implementation of erosion and sediment control measures and stormwater management measures:
(a) 
Landfills that have been issued a certification of closure under 329 IAC 10.
(b) 
Coal mining activities permitted under IC 14-34.
(c) 
Municipal solid waste landfills that are accepting waste pursuant to a permit issued by IDEM under 329 IAC 10 that contains equivalent stormwater requirements, including the expansion of landfill boundaries and construction of new cells either within or outside the original solid waste permit boundary.
(C) 
Discharges Authorized by This Chapter. This chapter authorizes the following discharges to waters of the state:
(1) 
Stormwater, including stormwater runoff, snowmelt runoff, and surface runoff and drainage, associated with construction activity (40 CFR Section 122.26(b)(14) or 122.26(b)(15)(i)).
(2) 
Stormwater discharges designated by IDEM as needing to obtain coverage under the CSGP (40 CFR Section 122.26(a)(1)(v) or 122.26(b)(15)(ii)).
(3) 
Stormwater discharges from construction support activities (e.g., concrete or asphalt batch plants, equipment staging yards, material storage areas, excavated material disposal areas, borrow areas) provided the support activity is directly related to the construction site required to have permit coverage for stormwater discharges, and:
(a) 
The support activity is not a commercial/industrial operation, nor does it serve multiple unrelated construction projects.
(b) 
The support activity does not continue to operate beyond the completion of the construction activity for the project it supports; and
(c) 
Stormwater measures are implemented in accordance with the stormwater pollution prevention plan, performance standards, and this general permit.
(4) 
Nonstormwater discharges or flows provided they are not identified by IDEM as significant sources of pollutants to waters of the state, including, but not limited to:
(a) 
Emergency firefighting water.
(b) 
Fire hydrant flushing water.
(c) 
Landscape irrigation water.
(d) 
Water line flushing.
(e) 
Routine external building washdown water that does not use detergents.
(f) 
Water used to wash vehicles and equipment that does not contain soaps, solvents, or detergents.
(g) 
Uncontaminated, nonturbid discharges of groundwater or spring water.
(h) 
Foundation or crawl space footing drainage where flows are not contaminated with process materials such as solvents or contaminated groundwater.
(i) 
Uncontaminated condensate from air conditioning units, coolers, and other compressors and from outside refrigerated gases or liquids.
(j) 
Construction dewatering water that has been treated by an appropriate stormwater quality measure or series of measures provided other contaminants are not present.
(D) 
Discharges Not Authorized by This Chapter. The following discharges from construction activities are not authorized by this chapter:
(1) 
Direct discharges into waters that are designated as an outstanding national resource water (ONRW) defined at IC 13-11-2-149.5 or an outstanding state resource water (OSRW) defined at IC 13-11-2-149.6 and listed at 327 IAC 2-1.3-3(d) when the commissioner determines that a discharge from the land-disturbing activity will significantly lower water quality as defined under 327 IAC 2-1.3-2(50) of such a water downstream of that discharge.
(2) 
Direct discharges to a receiving stream when the discharge results in an increase in the ambient concentration of a pollutant which contributes to the impairment of the receiving stream for that pollutant as identified on the current 303(d) list of impaired waters.
(3) 
Discharges of concrete or mortar wash water from concrete washout activities or release from containment systems.
(4) 
Wastewater from washout and cleanout of stucco, paint, form release oils, curing compounds and other construction materials.
(5) 
Soaps, detergents, or solvents used in vehicle and equipment washing.
(6) 
Other discharges, including but not limited to fuel, oil, or other pollutants used in vehicle and equipment operation and maintenance.
(E) 
Waivers and Special Conditions.
(1) 
The City of Angola has the authority to modify, grant exemptions, and/or waive certain requirements of this chapter and the City of Angola Stormwater Technical Standards Manual. Exceptions may be considered where standards of engineering practice cannot be substantially met because the site constraints make it physically impossible. A pre-submittal meeting with the City of Angola may be requested by the applicant to discuss the applicability of various provisions of the chapter and its associated technical standards document with regard to unique or unusual circumstances relating to a project. However, any initial determination of such applicability shall not be binding on future determinations of the City of Angola that may be based on the review of more detailed information and plans.
(2) 
Discharges are conditionally authorized for land-disturbing activities that are subject to this chapter but are considered an emergency. Emergency activities include any work which requires immediate implementation to avoid imminent endangerment to human health, public safety, or the environment, or to re-establish essential public services.
(3) 
Procedures for obtaining an emergency condition authorization, require the applicant to:
(a) 
Submit a preliminary notification of the emergency to IDEM and City of Angola within 24 hours or next business day of initiating land disturbance.
(b) 
Develop a SWPPP that specifically addresses the operations associated with the emergency. The submittal of the plan is not required.
(c) 
Submit a complete NOI within 30 calendar days after commencing land-disturbing activities to IDEM and the City of Angola establishing eligibility under this permit.
(Ord. 1751-2024)
(A) 
Effective stormwater pollution prevention on construction sites is dependent on a combination of preventing movement of soil from its original position (erosion control), intercepting displaced soil prior to entering a water body (sediment control), and proper on-site materials handling.
(B) 
All permittees shall manage stormwater discharges as necessary to meet the narrative water quality criteria (327 IAC 2-1-6(a)(1)(A) through (D) and 327 IAC 2-1.5-8(a) and (b)(1)(A) through (D)) for any discharge authorized by this chapter and CSGP, with compliance required upon beginning such a discharge. For stormwater discharges, the use of stormwater management measures and planning principles is expected to achieve the control necessary to meet water quality criteria.
(C) 
The SWPPP will serve as a guideline for stormwater management but should not be interpreted to be the only basis for implementation of stormwater measures for a project site. The permittee is responsible for implementing all measures necessary to comply with the provisions of this chapter and the CSGP.
(D) 
All stormwater management measures, including erosion and sediment control measures and post-construction measures, shall be implemented in accordance with this chapter, the City of Angola Stormwater Technical Standards Manual, the terms and conditions of the approved site improvement permit, and CSGP.
(Ord. 1751-2024)
(A) 
In calculating the total area of land disturbance, for the purposes of determining applicability of this chapter to the project, the following guidelines should be used:
(1) 
Off-site construction activities that provide services (for example, road extensions, sewer, water, and other utilities) to a land-disturbing project site must be considered as a part of the total land-disturbance calculation for the project site, when the activity is under the control of the project site owner.
(2) 
Strip developments will be considered as one project site and must comply with this chapter unless the total combined disturbance on all individual lots is less than one acre and is not part of a larger common plan of development or sale.
(3) 
To determine if multi-lot project sites are regulated by this rule, the area of land disturbance shall be calculated by adding the total area of land disturbance for improvements, such as roads, utilities, or common areas, and the expected total disturbance on each individual lot, as determined by the following:
(a) 
For a single-family residential project site where the lots are one-half acre or more, one-half acre of land disturbance must be used as the expected lot disturbance.
(b) 
For a single-family residential project site where the lots are less than one-half acre in size, the total lot must be calculated as being disturbed.
(c) 
To calculate lot disturbance on all other types of project sites, such as industrial and commercial project sites, a minimum of one acre of land disturbance must be used as the expected lot disturbance, unless the lots are less than one acre in size, in which case the total lot must be calculated as being disturbed.
(B) 
The calculation methods as well as the type, sizing, and placement of all stormwater pollution prevention measures for construction sites shall meet the design criteria, standards, and specifications outlined in the Indiana Stormwater Quality Manual and the City of Angola Stormwater Technical Standards Manual. The methods and procedures included in these two references are in keeping with the above-stated policy and meet the requirements of CSGP.
(Ord. 1751-2024)
(A) 
Design plans, technical information, and the construction SWPPP shall be submitted per the application process in AMVC 13.15.300 et seq. The construction SWPPP shall include the requirements identified in the City of Angola Stormwater Technical Standards Manual.
(B) 
It will be the responsibility of the project site owner to ensure proper construction and installation of all stormwater measures in compliance with this chapter, the City of Angola Stormwater Technical Standards Manual, the terms and conditions of the approved site improvement permit, and CSGP.
(Ord. 1751-2024)
(A) 
Following approval of the site improvement permit by the City of Angola and commencement of construction activities, the City of Angola has the authority to conduct inspections of the site to ensure full compliance with this chapter, the Standards, the terms and conditions of the approved site improvement permit, and CSGP.
(B) 
A self-monitoring program shall be implemented by the project site owner to ensure the stormwater pollution prevention plan is working effectively in accordance with the CSGP. At a minimum, the self-monitoring program shall meet the requirements in the City of Angola Stormwater Technical Standards Manual.
(C) 
Although self-monitoring reports do not need to be submitted to the City of Angola, the City of Angola has the right to request complete records of maintenance and monitoring activities involving stormwater pollution prevention measures. All evaluation reports for the project site must be made available to the City of Angola, in an organized fashion, within 48 hours upon request.
(Ord. 1751-2024)