The Ohio State University · The Ohio State University (OSU) was identified as being an owner/operator of a municipal separate storm sewer system (MS4) in 2001. ... This section deals

The Ohio State University Storm Water Management Program Post‐Construction BMP Operations and Maintenance Guidance Manual

December 1, 2009

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Contents

Section 1 Introduction 1.1 Purpose and Need .................................................................................................... 1-1 1.2 Guidance Manual Organization ............................................................................. 1-2 1.3 Guidance Manual Definitions and Acronyms ...................................................... 1-2

Section 2 Post-Construction BMP Operations and Maintenance Requirements 2.1 OSU’s MS4 Permit and Post-Construction BMPs ................................................ 2-1 2.2 Construction General Permit – Summary of Requirements ............................... 2-3 2.3 Storm Water Pollution Prevention Plan: Post-Construction Operation and Maintenance Requirements ............................................................................. 2-3 2.4 Assigning Unique BMP Identification Numbers ................................................. 2-4 2.5 Recertification of BMPs by an Engineer ................................................................ 2-4 2.6 How to Use this Guidance Manual ........................................................................ 2-6 2.6.1 Using the Guidance Manual .................................................................... 2-6 2.6.2 BMP Maintenance Inspection Forms and BMP Maintenance Work Order ................................................................................................ 2-7 2.6.3 Completing BMP Maintenance Inspection Forms and BMP Maintenance Work Order Forms ............................................................ 2-7 2.6.4 Contents of OSU’s Post-Construction Operations and Maintenance Plans .................................................................................... 2-8 2.7 OSU’s Post-Construction Storm Water Operation and Maintenance Program Procedures ................................................................................................. 2-8

Section 3 Best Management Practice (BMP) Inspection and Maintenance Criteria 3.1 Operations and Maintenance Criteria ................................................................... 3-1 3.1.1 Keys to Identifying when Maintenance Needs to be Performed ......... 3-2 3.2 Proper Disposal of BMP Maintenance Waste Materials ..................................... 3-3 3.3 Types of Maintenance .............................................................................................. 3-4

Section 4 OSU’ Post-Construction Storm Water Management Controls 4.1 OSU’s Structural BMP Types .................................................................................. 4-1 4.2 OSU’s Non-Structural BMP Types ......................................................................... 4-3 Section 5 References Appendices

Appendix A BMP Maintenance Work Order Appendix B BMP Maintenance Inspection Forms Appendix C BMP Location Map Appendix D OEPA-Construction General Permit

The Ohio State University Post-Construction BMP Operations and Maintenance Guidance Manual

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Figures

2-1 BMP location map .................................................................................................... 2-5 2-2 OSU’s Post-Construction Storm Water Operations/Maintenance and Inspection Procedural Flowchart ........................................................................... 2-9


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Tables

2-1 OSU’s Post-Construction BMPs and Measurable Goals .................................... 2-2 3-1 Waste Disposal Types and Methods ...................................................................... 3-3 3-2 Types of Maintenance .............................................................................................. 3-4 4-1 OSU’s Post-Construction BMPs .............................................................................. 4-1

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Section 1 Introduction The Ohio State University (OSU) was identified as being an owner/operator of a municipal separate storm sewer system (MS4) in 2001. The Ohio Environmental Protection Agency’s (OEPA) National Pollutant Discharge Elimination System (NPDES) Municipal Separate Storm Sewer System (MS4) permit required development of a Storm water Management Plan (SWMP) to provide guidance on how OSU will implement storm water controls that meet the minimum control measure (MCM) of the permit. OSU developed and submitted the university’s SWMP in March of 2003 that contained best management practices (BMPs). One of the MCMs is to implement post-construction storm water quality controls as part of construction projects that disturb one acre or more of land. OSU identified the following post-construction BMPs in the 2003 SWMP:

Implementation of a Formal Storm Water Management Plan – This includes incorporating the formal SWMP into the University’s Utility Master Plan. This master plan describes specific measures OSU will take to improve storm water quality.

Detention/Retention Ponds/Basins – This program activity includes quantifying past and present use of retention/detention across OSU property. OSU will also, as part of this BMP, develop guidelines for runoff reduction.

Implement Research Programs for Innovative Storm water Management – This program activity includes working with faculty, student/staff organizations and university departments to site, design and implement projects/programs for innovative storm water management. The innovative nature of these activities will combine some of the unique physical aspects of campus along with the resources of one of the nation’s leading research institutions to identify and fund innovative research projects.

The regulatory permit cycles cover five years . In January 2009, OEPA issued the second generation permit. The second generation permit provides more prescriptive activities that need to be implemented to meet the post-construction storm water control requirements.

1.1 Purpose As a regulated entity under OEPAs NPDES second generation permit, OSU is required to:

Develop and implement strategies before and during construction that include a combination of structural and non-structural best management practices to control and treat storm water after construction is complete.


Section 1 – Introduction

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Ensure adequate long-term operation and maintenance of each installed post-construction BMP.

Identify responsible parties to implement, operate, and maintain post-construction storm water BMPs.

The purpose of this Post-Construction BMP Operations and Maintenance Guidance Manual is to provide OSU with a consistent, organized and structured method with which to operate, inspect, and maintain post-construction best management practices.

1.2 Guidance Manual Organization This Guidance Manual is organized as follows:

Section I - Introduction

Section II – Post-Construction BMP Operations and Maintenance Requirements – Provides an overview on the information and activities required to be implemented to meet the permit requirements associated with Post-Construction operations and maintenance. Provides information on how to use the Guidance Manual, how the forms are organized, how to use the forms, and what needs to be included in a post-construction operations and maintenance plan for OSU projects that disturb one or more acre of land. Provides a program flow chart which outlines how this Manual and the forms will address the permit requirements.

Section III – BMP Inspection and Maintenance Criteria – Provides information on OSU’s post-construction BMP operation and maintenance criteria and procedures.

Section IV – Recommended Post-Construction BMPs – Provides an overview of the types of BMPs that are recommended for OSU.

References

Appendices

This Guidance Manual is structured to allow OSU personnel to update and modify checklist information as necessary and should, at a minimum, be reviewed and evaluated every five years and revised accordingly to incorporate new OEPA NPDES storm water permit requirements.

1.3 Guidance Manual Definitions and Acronyms This Manual contains regulatory acronyms and terms that are defined below. The definitions/acronyms below are not intended to be the total comprehensive list, but are intended to be revised as necessary to accommodate additional definitions and terminology as needed:


Section 1 – Introduction

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BMP Best Management Practice CFR Code of Federal Regulations CGP Construction General Permit CMS Construction and Material Specifications CO Central Office CPESC Certified Professional in Erosion and Sediment Control CWA Clean Water Act GIS Geographical Information System HSTS Household Sewage Treatment Systems MCM Minimum Control Measure MEP Maximum Extent Practical MS4 Municipal Separate Storm Sewer System NEPA National Environmental Policy Act NOI Notice of Intent NOV Notice of Violation NPDES National Pollutant Discharge Elimination System ODH Ohio Department of Health ODNR Ohio Department Natural Resources ODOT Ohio Department of Transportation OEPA Ohio Environmental Protection Agency O/M Operations and Maintenance OPI Operational Performance Index ORC Ohio Revised Code OWS Oil/Water Separator PE Professional Engineer QA/QC Quality Assurance/Quality Control QA/QR Quality Assurance/Quality Review QAR Quality Assurance Review ROW Right-of-Way SAO State Architect’s Office SWMP Storm Water Management Program/Plan SWPPP Storm Water Pollution Prevention Plan TMDL Total Maximum Daily Load TPR Technical Process Review TSEC Temporary Sediment & Erosion Control USEPA United States Environmental Protection Agency

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Section 2 Post-Construction BMP Operations and Maintenance Requirements This section provides information on the regulatory requirements that OSU is required to address as part of OSU’s SWMP. This section deals specifically with the post-construction control requirements of the permits and what OSU is required to implement and manage as part of these requirements. As mentioned in Section 1, OSU is an owner/operator of a separate storm sewer system and is regulated under the MS4 program. OSU also conducts development and construction activities that exceed the one acre land disturbance threshold. These development/construction activities require OSU to comply with OEPAs NPDES Construction General Permit (CGP) requirements. The following information will provide a summary of permit requirements for the CGP and provide general information as to what these requirements mean to OSU with regards to post-construction storm water management. This section will provide information associated with:

OSU’s MS4 Permit and Post-Construction BMPs – Provides a brief summary of OSU’s MS4 permit requirements specific to post-construction controls, and provides general information on OSU’s MS4 post-construction BMPs.

The CGP – Summary of Requirements – Provides a brief summary of the CGP and what OSU is responsible for in terms of project permit requirements.

The Storm Water Pollution Prevention Plan (SWPPP) - Post-Construction Operation and Maintenance Requirements provides information on what needs to be included in the SWPPP associated with post-construction controls.

Assigning unique BMP identification number.

Recertification of BMPs by an Engineer.

How to use this Guidance Manual – Provides an overview on how to use this Guidance Manual.

OSU’s Post-Construction Storm water Operation and Maintenance Program Procedures – Provides information on OSU’s program procedures.

2.1 OSU’s MS4 Permit and Post-Construction BMPs OSU, as a regulated entity under the MS4 permit, has to address both the MS4 permit requirements and the CGP requirements. OSU, under the MS4 permit has developed three BMPs to meet the MS4 post-construction permit requirement. The BMPs and the measurable goals are included in Table 2-1.


Section 2 – Storm Water Management

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Table 2-1

OSU’s Post-Construction BMPs and Measurable Goals

Post-Construction BMP Measurable Goal

Develop and Implement a formal Storm water

Management Plan

Obtain Funding

Retain Consultant to develop plan

Plan preparation

Plan Implementation

Detention/Retention Ponds/Basins

Quantify detention/retention

Develop guidelines for improvements

Implement Program

Implement Research Programs for innovative

Storm water Management

Identify potential research topics/areas

Identify research sites

Assist faculty with soliciting funding for

research projects.

Additional information on these MS4 post-construction BMPs can be found in OSU’s Storm Water Management Plan (March 2003). The MS4 SWMP information is provided as background to provide the framework for addressing how and why OSU is a non-traditional regulated entity. The following information provides some of the limitations that OSU faces with being a non-traditional regulated MS4 entity:

OSU is not a political entity and does not have the ability to develop and pass ordinances or regulations.

OSU can, through design requirements and specifications, require that post-construction controls be designed and constructed as part of OSU projects, and can also perform project design reviews as a method to ensure that appropriate post-construction controls are being designed according to OSU’s design policy. OSU can perform construction inspections to ensure the BMPs are being installed per plan.

As OSU conveys and discharges storm water runoff during and after storm events to waters of the state and to the City of Columbus’s storm sewer systems. As a regulated MS4 entity, OSU is required to the maximum extent practicable (MEP) to provide post-construction storm water management for runoff being discharged into the City of Columbus’s storm sewer systems. OSU implements these permit requirements through post-construction BMPs



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from both the MS4 and CGP. OSU needs to better understand the interaction between OSU’s storm sewer system and the City of Columbus’s storm sewer system relating to post-construction storm water discharges, storm water quality and quantity issues.

2.2 Construction General Permit – Summary of Requirements For OSU projects that disturb more than one acre, OSU shall address, implement, and comply with the CGP requirements (the entire permit has been included in Appendix C). Several key permit requirements are listed below:

OSU shall complete and submit to OEPA a Notice of Intent (NOI) for each project meeting the one acre land disturbance threshold.

Projects meeting the minimum land disturbance threshold shall include a storm water pollution Prevention Plan (SWPPP). The SWPPPs shall include the following:

o Identification of potential sources of pollution which may reasonably be expected to affect the quality of storm water discharges associated with construction activities.

o Comprehensive document that addresses the permit requirements as stated in Part III. G of the OEPA NPDES CGP. This references the permit sections associated with developing a Storm Water Pollution Prevention Plan. (See Appendix C – Construction General Permit).

o Descriptions and assurances that implementation of BMPs reduce the pollutants in storm water discharges during construction and pollutants associated with post-construction activities.

OSU shall complete and submit a Notice of Termination (NOT) at the completion of the project.

2.3 Storm Water Pollution Prevention Plan: Post- Construction Operation and Maintenance Requirements For OSU projects that require development of a SWPPP, OSU’s post-construction program shall provide perpetual management of runoff quality and quantity. The SWPPPs are typically designed by the consulting engineer and, at a minimum, include the following post-construction control permit requirements:

Description of post-construction BMPs to be installed.



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Rationale for post-construction BMP selection. Rationale shall address estimated impacts on channels, floodplains, stream morphology, hydrology, and surface water quality.

Detailed post-construction BMP drawings.

The above information is to be incorporated as part of the SWPPP for OSU projects that require post-construction runoff controls. OSU’s storm water management program shall include activities whereby OSU personnel review the submitted SWPPPs and perform BMP construction inspection during installation. Detailed information on the post-construction BMP selection rationale, post-construction BMP design guidance, and post-construction BMP drawing requirements are not covered in this Guidance Manual.

2.4 Assigning Unique BMP Identification Numbers OSU, as part of the MS4 permit, maintains a storm sewer system and supporting base mapping. This base map includes storm sewer system pipes, outfalls, open channels, and post-construction (Quantity and Quality) controls which are part of OSU’s storm sewer system infrastructure and have been located on the base map. The post-construction controls have been given a “Best Management Practice” identification number which will be used when completing the maintenance inspection and completed reports as a way to integrate the BMP reports with the mapped BMPs. As new BMPs are constructed, OSU will update the base map with new post-construction BMPs using the As-built drawings as required by the MS4 permit under the post-construction MCM5. Figure 2-1 provides information on the current post-construction BMPs. An 11x17 drawing is located in appendix C.

2.5 Recertification of BMPs by an Engineer In general most of the maintenance performed by OSU maintenance/operations staff will not require any additional verification, other than to document that the maintenance was performed. However, OSU shall require an OSU engineer’s certification stamp or equivalent certification/inspection or evaluation associated with proper re-sizing of the control to ensure that the basin/control has retained the original design dimensions per plan. OSU requires controls of this type to include a “Maintained in-place As-built drawing” that is stamped to verify the following:

Correct elevations

Inverts

Slopes (sides, bottom)

Control storage dimensions



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Figure 2-1 BMP Location Map



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The engineer’s required approval is for post-construction controls that collect sediment and this sediment needs to be mechanically removed. For OSU, these BMP types include wet and dry basins and forebay areas. The estimated frequency for the maintenance and corresponding certification are addressed appendices B-1 and B-2.

2.6 How to Use this Guidance Manual This section provides information on how to use the Guidance Manual, how the BMP maintenance inspection forms are organized, how to fill out the forms and what needs to be included in the post-construction operations and maintenance plan for OSU projects. This Guidance Manual has been developed for OSU to use and establish a proactive “stand alone” post-construction operations and maintenance program. The following provides information on how to use the Manual, BMP forms and components of project level operations and maintenance plan.

2.6.1 Using the Guidance Manual This Manual is to be used for performing maintenance inspections on structural post-construction controls that were designed and constructed to meet OEPA permit requirements. These structural post-construction controls will be maintained and operated as part of OSU’s storm sewer system infrastructure. This Manual includes:

Program procedures flowchart (Section 2.7) - The flow chart provides procedural information on how to implement program, when to use what forms and what to do with the completed forms.

BMP Maintenance Inspection forms – Forms provide maintenance information to be completed during inspection.

Frequency of Maintenance – The maintenance frequencies are divided into five different time intervals – Annual, Semi-Annual, Quarterly, Monthly, and after large storm events.

Individuals using this Guidance Manual shall have a general understanding of OSU’s storm water program and implementation of OSU maintenance activities on storm sewer infrastructure. Using this Manual requires the individual to be knowledgeable about post-construction storm water controls, including:

General knowledge on how these controls work.

General knowledge on BMP construction and installation techniques.

General Knowledge on BMP maintenance and restoration.

The individual shall also be able to:

Select the appropriate BMP maintenance inspection form.



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Perform BMP maintenance inspections.

Correctly fill out the BMP maintenance inspection form. Completely filling out this form will provide information on required BMP maintenance which will assist with prioritizing maintenance activities.

Perform follow up inspections once maintenance has been performed.

2.6.2 BMP Maintenance Inspection Forms and BMP Maintenance Work Order The BMP maintenance inspection forms include the following information:

Maintenance Items – These items have been grouped by their BMP components (e.g., detention basin groups include embankments, emergency spillway, inlets and outlets).

Inspection Frequency – This provides information on how often certain BMP elements shall be inspected.

Inspection Items – These items include BMP components inspected during any given maintenance inspection along with the recommended maintenance. The inspections indicate which BMP elements need maintenance to be performed and a follow up inspection is made to ensure that any maintenance recommended has been performed and the BMP restored to operating as designed status.

Summary of Maintenance Required – Space to describe what type of maintenance is recommended.

Filling out the BMP Maintenance Work Order – Once maintenance is identified, OSU inspection personnel shall complete a BMP maintenance work order to initiate the maintenance process.

2.6.3 Completing BMP Maintenance Inspection Forms and BMP Maintenance Work Order Forms The BMP maintenance inspection forms are developed for ease of use. Completing the BMP forms requires the following:

On-site BMP field visit

Fill in the appropriate cells based on the BMP type. Filling in the cells requires reading the maintenance question and answering yes or no.

Provide enough information in the Maintenance needed column of the BMP maintenance inspection form such that when scheduling the BMP



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maintenance, the BMP maintenance work order form can be easily filled out and the maintenance performed by mobilizing the correct equipment and personnel to the BMP location.

2.6.4 Contents of OSU’s Post-Construction Operations and Maintenance Plans OSU’s post-construction operations maintenance plans (PCOMP) must be standalone documents that incorporate the following:

Designated entity for storm water inspection and maintenance – which will be OSU personnel

Identified routine and non-routine maintenance tasks to be performed- Included as part of the BMP checklists

Schedule for Inspection and Maintenance – Noted in the BMP checklists

Maintenance agreements with OSU departments and easements as necessary – These may be required on specific BMPs as necessary.

Map – showing access and maintenance easements.

The BMP inspection forms are included in Appendix B.

2.7 OSU’s Post-Construction Storm Water Operation and Maintenance Program Procedures This section provides information on how OSU’s post-construction storm water operations and maintenance program is organized, how to identify what BMP forms to use, and when to use them. Figure 2-2 provides this information in a flowchart format.

Jennings Hall OSU



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Figure 2-2

OSU’s Post-Construction Storm Water Operations/ Maintenance and Inspection Procedural Flowchart

OSU project requires Post-Construction BMP to be Designed/Constructed

BMP Design completed by others

BMP Constructed by others. BMP construction inspection performed by OSU staff

OSU Post-Construction BMP Approved and Operating

Select Appropriate BMP Inspection Form from Manual - Appendix B

Perform Follow up Inspection to Ensure Maintenance Performed and BMP Operates as Designed/Intended

Complete BMP Maintenance Inspection Form and BMP Maintenance Work Order Form

File Maintenance Inspection Report

Determination on When to Inspect Post-Construction BMPs

Yes Is BMP Functioning

?

No

Yes

NoDone – No

Further Action

Done – No Further Action

Is it time for the scheduled

Maintenance Inspection?

Conduct Maintenance Inspection and Identify Maintenance Needs

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Section 3 Best Management Practice (BMP) Inspection and Maintenance Criteria OSU’s Post-Construction Best Management Practices (BMPs) are designed to treat storm water from the constructed project. The controls become part of the storm sewer/drainage infrastructure and need to be inspected, operated, and maintained at to the same level as other OSU storm sewer infrastructure. By design, the BMPs collect, detain, hold, and absorb storm water pollutants over time. These pollutants will collect in the controls, thus reducing capacity to treat, store, or detain runoff. By their nature they are designed to collect pollutants and therefore need to have the pollutants removed to ensure proper performance and functionality. Performing scheduled maintenance inspections and routine maintenance will extend the life of the control and reduce potentially more expensive maintenance.

This section provides OSU post-construction program information on the following:

Operations and Maintenance Criteria

Proper Disposal of BMP spoils

Summary of BMP Maintenance Types

3.1 Operations and Maintenance Criteria Each BMP that OSU designs, constructs or operates/maintains requires some level of maintenance at some frequency. This section addresses information on when maintenance should be performed, what types of maintenance require engineering certification, and information on proper disposal procedures. Section 3.5 will provide detailed information on the types of maintenance and Section 4.0 will provide information on the types of post-construction BMPs and the maintenance and inspection items associated with each.

Structural and Non-structural Practices at OSU

The Ohio State University

Post-Construction BMP Operations and Maintenance Guidance Manual

Section 3 – Best Management Practice (BMP) Inspection and Maintenance

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3.1.1 Keys to Identifying when Maintenance Needs to be Performed With any storm water sewer system infrastructure, operations and maintenance are critical activities to ensure long-term function and benefit. Post-construction controls become part of the storm sewer system infrastructure once constructed and need to be operated and maintained just like the storm sewer system. These controls are designed to perform certain functions, some of the controls collect and hold runoff for a period of time, some allow the runoff to pass through the system either horizontally or vertically, and others function more as a filter. With each control potentially performing or functioning differently, the maintenance needs to address these differences and be tailored for each BMP or BMP type. The following are signs or indicators that the control needs to have maintenance performed:

Decline in Controls Appearance – Vegetation overgrown, litter collecting in the basin, and general decrease in the appearance of the control.

Standing Water – Outlet controls may need to be maintained, settling or erosion which has caused isolated areas of standing water. Health issues associated with mosquito breeding areas. Lack of controls’ ability to infiltrate runoff.

Odors – Standing water, leaching ground water, trash collecting in the control.

Accumulation of material (e.g., sediment, trash, other) in the control.

Erosion occurring at the inflow areas or outlets of side slopes.

Plugged outlet control structure.

Illegal dumping within or adjacent to the control

Vandalism

Invasive vegetation and overgrown vegetation

Encroachment

Obstructed access for maintenance

Raingardens/Bioretention Facility at OSU




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Condition of downstream receiving stream – Degrading

Public or third party requests/complaints

As part of OSU’s BMP operations and maintenance program, the items above are incorporated into the BMP checklists for the different types of controls. The information mentioned above is not intended to be a comprehensive list, however these are indicators of when maintenance should be scheduled or inspection performed to identify the appropriate maintenance. The procedure flowchart in section 2.6 provides information on how to determine when maintenance needs to be performed. The checklists incorporate these issues and can be revised as necessary to meet additional OSU post-construction BMP operation and maintenance requirements or issues.

3.2 Proper Disposal of BMP Maintenance Waste Materials During maintenance of post-construction BMPs certain types of waste materials will be collected that will need to be disposed of. Table 3-1 includes the type of waste and recommended disposal method.

Table 3-1

Waste Disposal Types and Methods

Type of Waste Proposed Disposal Method

Trash Landfill or recycle collected trash

Basin sediment Removal of accumulated sediment in basin

bottom, this can be applied to adjacent

land. Removed sediment shall be leveled

and stabilized to minimize re-deposition of

sediment into the basin or the receiving

streams. Basin sediment that may contain

oils, grease, heavy metals or toxic

materials should be disposed of in a

permitted landfill. Testing may be required

to determine if the sediment needs to be

disposed of in a permitted landfill disposal.

Catch Basin Sediment and Trash Landfill or recycle trash. Collected

sediment shall be dewatered by placing in

a covered area to allowing for drying. The

collected or captured decanted water shall

be treated appropriately via a sanitary

system or collected and hauled to a

permitted disposal facility. Should the




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Type of Waste Proposed Disposal Method

sample tested not be considered

hazardous recycle the dewatered sediment

material by using these as leveling material

and stabilize appropriately. (Note: Care to

be taken not to re-suspend sediments in

runoff).

Vegetation Removal Remove and recycle through mulching as

applicable.

3.3 Types of Maintenance This section contains summary information on the types of BMP maintenance that OSU will implement as part of the post-construction operations and maintenance program. In general, in terms of prioritizing maintenance, corrective maintenance is the highest priority as necessary, followed by preventative maintenance and then aesthetic maintenance. Table 3-2 provides information on the type of maintenance and a brief description on what the maintenance activities include for these maintenance types. The practices identified in the table are not intended to be a comprehensive list. OSU has incorporated this maintenance information as part of the maintenance and inspection forms provided in Appendix B.

Table 3-2

Types of Maintenance

Type of Maintenance Description

Emergency Maintenance Maintenance performed to prevent loss of life,

major damage to control or repair associated

with a rain event or flooding.

Debris and Litter Removal Includes collection and removal of debris and

trash from the control.

Sediment Removal and Disposal Excavate accumulated sediments or other

solids. See Table 3-1 for disposal information.

Stability and Erosion Control Repair exposed soil areas in or adjacent to

the control. Level or re-grade areas that show

evidence of sheet or rill erosion. Stabilize

repaired area.




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Type of Maintenance Description

Maintenance of Mechanical Components Ensure mechanical controls are in good

working repair. These may include gates,

pumps, flow controls or other items which are

operated by hand or electronically.

Vegetation Maintenance Mowing and removal of invasive species.

Maintenance of Aquatic Environment Wet Ponds – Remove surface algae blooms,

ensure outlet control and spillway are

functioning, mow /maintain side slopes to

water edge, remove floatables and remove

unwanted water vegetation.

Insect Control Maintain and eliminate standing water and

items that can hold water from control.

Maintain perimeter vegetation to design

specifications and mow as specified.

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Section 4 OSU Post-Construction Storm Water Management Controls Post-construction controls are divided into two types: 1) Structural controls – A device, practice, or method for removing, reducing, retarding, or preventing targeted storm water runoff constituents, pollutants, and contaminants from reaching receiving waters; 2) Non-structural controls – Focused on preserving open space, protecting natural systems, and incorporating existing landscape features such as wetlands and stream corridors into a site plan to manage storm water at its source. Some focus on clustering and concentrating development, minimizing disturbed areas, and reducing the size of impervious areas.

This section provides recommendations, structural and non-structural BMPs, which OSU has approved for use on University projects. Maintenance Inspection forms are included in Appendix B for each of the recommended BMP. The remainder of this section provides information on the recommended BMP types, both structural and non-structural.

4.1 OSU’s Structural BMP Types OSU’s structural BMPs are designed to remove pollutants from storm water runoff, reduce downstream erosion, provide flood control, and promote groundwater recharge. Structural BMPs typically require engineering, design and should be inspected during construction to ensure they are installed per plan. The recommended BMPs are outlined in Table 4-1. The table includes the BMP name and BMP description for each BMP and a MS4 information column.

Table 4-1

OSU’s Post-Construction BMPs

Best Management Practice Title

BMP Description * MS4 Information

Dry Extended Detention

Basins that have been designed to detain storm water runoff for some minimum time to allow particles and associated pollutants to settle

Measurable goals – Develop guidelines for runoff reduction, Quantify detention/retention

Wet Extended Detention

Constructed basins that have permanent pool of water throughout the year. Ponds treat incoming storm water runoff by allowing particles to settle and algae to take up nutrients.

Measurable goals – Develop guidelines for runoff reduction, Quantify detention/retention

Pre-Treatment - Forebay Area used in combination with other post-construction

Measurable goals – Develop guidelines for runoff


Section 4 – Post-Construction Storm water Management Controls

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Best Management Practice Title

BMP Description * MS4 Information

controls to settle out particles. This also minimizes maintenance associated with the post-construction control.

reduction, Quantify detention/retention

Constructed Wetland

Incorporate wetland plants into the design. As storm water runoff flows through the wetland pollutant removal is achieved through settling and biological uptake within the control

No cross reference with OSU’s MS4 SWMP.

Biorentention

These are depressions designed to incorporate many of the pollutant removal mechanisms that operate in a forested ecosystem.


Raingarden See Bioretention No cross reference with

OSU’s MS4 SWMP.

Infiltration Basin Shallow impoundment which is designed to infiltrate storm water into the soil.


Infiltration Trench

Rock filled trench with no outlet that receives storm water runoff. Typically used in combination with other post-construction BMPs (i.e. swales, detention basins).


Porous Pavement

Permeable pavement surface typically built with an underlying stone sub-base for temporary storage of runoff.


Enhanced Water Quality Swale

Designed to treat and attenuate storm water runoff through vegetation which slows the runoff allowing for sedimentation and infiltration into the underlying soils.


Vegetated Filter Strips

Designed to treat sheet flow from adjacent surfaces. Function by slowing runoff velocities and filtering out sediments and other pollutants.


Cisterns Designed to collect storm water.


*Information directly from OSUs Storm Water Management Plan (2003)


Section 4 – Post-Construction Storm water Management Controls

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4.2 OSU’s Non-Structural BMP Types Non-structural BMPs are storm water controls that prevent or limit entry of pollutants into storm water runoff at the source. These preventive types of controls are effective by reducing or eliminating pollutants from entering the runoff and subsequently can be removed from the receiving waters. This information has been included in this Guidance Manual to provide background on the non-structural type controls OSU currently performs associated with post-construction control maintenance. OSU’s non-structural controls:

Storm drain labeling

Spill Control and Countermeasure Plan activities that address proper storage/containment, handling and post-spill clean-up.

Street and Parking lot sweeping

For this Guidance Manual, no BMP maintenance inspection checklists have been developed for these controls.

OSU Bioretention

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Section 5 References 1. American Society of Civil Engineers (1998) Urban Runoff Quality Management,

WEF Manual of Practice No. 23, ASCE Manual and Report on Engineering Practice No. 87, Water Environment Federation , Alexandria, Va. and American Society of Civil Engineers, Reston, Va.

2. Debo, T.N., et al. (1995) Municipal Storm Water Management, Boca Raton, FL.

3. England, G., et al. (2007) Storm water BMPs Selection, Maintenance & Monitoring, Santa Barbra, CA.

4. Watershed Management Institute Inc. (1997) Operation, Maintenance & Management of Storm water Management, Crawfordville, FL.

5. North Carolina Department of Environment and Natural Resources (2007) NCDENR Storm water BMP Manual, Chapter 7 – BMP Inspection and Maintenance, North Carolina

6. Charles River Watershed Association (2008) Low Impact Best Management Practice Information – Constructed Storm water Wetlands, Virginia

7. Charles River Watershed Association (2008) Low Impact Best Management Practice Information – Wet Pond, Virginia

8. Charles River Watershed Association (2008) Low Impact Best Management Practice Information – Grass Swales, Virginia

9. U.S. Environmental Protection Agency (2007-2009) – BMP Inspection and Maintenance Factsheet, Washington D.C.

10. U.S. Environmental Protection Agency (2007-2009) – Bioretention (Raingardens) Factsheet, Washington D.C.

11. U.S. Environmental Protection Agency (2007-2009) – Infiltration Basin Factsheet, Washington D.C.

12. U.S. Environmental Protection Agency (2007-2009) – Infiltration Trench Factsheet, Washington D.C.

13. U.S. Environmental Protection Agency (2007-2009) – Porous Pavement Factsheet, Washington D.C.

14. U.S. Environmental Protection Agency (2007-2009) – Catch Basin Inserts Factsheet, Washington D.C.


Section 5 - References

A 5-2

15. U.S. Environmental Protection Agency (2007-2009) – Dry Detention Ponds Factsheet, Washington D.C.

16. U.S. Environmental Protection Agency (2007-2009) – Wet Ponds Factsheet, Washington D.C.

17. U.S. Environmental Protection Agency (2007-2009) – Storm water Wetland Factsheet, Washington D.C.

18. U.S. Environmental Protection Agency (2007-2009) – Grassed Swale Factsheet, Washington D.C.

19. U.S. Environmental Protection Agency (2007-2009) – Vegetated Filter Strip Factsheet, Washington D.C.

20. City of Columbus – Division of Sewerage and Drainage – Department of Public Utilities (2006) – Storm water Drainage Manual, Columbus, Ohio

21. Ohio Department of Natural Resources (2006) – Rainwater and Land Development (Ohio’s Standards for Storm water Management Land Development and Urban Stream Protection), Columbus, Ohio

A A-1

Appendices These appendices have been included as tools for the user and can be easily modified as permit requirements change.

A – BMP Maintenance Work Order Form

B - Maintenance Inspection Forms

C- BMP Location Map

D- Construction General Permit

The Ohio State UniversityAppendix A

The Ohio State UniversitySt W t M t P

ppStorm Water Management Programg g

Page 1 of 1Work Order for BMP Maintenance Page 1 of 1Work Order for BMP Maintenance

PROJECT INFORMATION :PROJECT INFORMATION :

Project: Work Order Number:

OSU Campus Date:Intiated By:OSU Campus Date:Intiated By:

BMP Type Date:Checked by:

Location:Location:

OSU Crew Info:OSU Crew Info:

N Ti t l t Mi t (h )Names: Time to complete Minatenance (hrs):

Equipment: Date Maintenance Completed:Equipment: p

PROJECT DESCRIPTION:PROJECT DESCRIPTION:

Work Order for BMP MaintenanceWork Order for BMP Maintenance

1 Brief Description of Type of Maintenance Work to be Performed:1. Brief Description of Type of Maintenance Work to be Performed:

2. Special requirements, permits or instructions associated with BMP maintenance:p q p

3 Information to be documented/recorded for OSUs storm water program:3. Information to be documented/recorded for OSUs storm water program:

a Estimated amount of material removed during maintenance a. Estimated amount of material removed during maintenance.

b Verification of proper disposal of spoil material b. Verification of proper disposal of spoil material.

c. Disturbed areas stabilized when maintenance complete?

d Downstream conditions checked and documented prior to performing

p

d. Downstream conditions checked and documented prior to performing maintenance?

Notes on downstream conditions:Notes on downstream conditions:

e. Any follow up inspection required? e. Any follow up inspection required?Inspection and Miantenance Notes:Inspection and Miantenance Notes:

Operation and Maintenance Inspection report form – Basins Page 1 of 5

Appendix B - 1 Operation and Maintenance Inspection Report Form

Dry Extended Detention BMP Identification ___________________________

Inspector Name ______________________ Inspection Date/Time ____________________ Inspection Frequency ____________________

Maintenance Items

Inspection Items

Insp

ectio

n Fr

eque

ncy*

Che

cked

? (Y

es/N

o)

Mai

nten

ance

N

eede

d?

(Yes

/No)

Follo

w u

p In

spec

tion

to v

erify

M

aint

enan

ce

Com

plet

e (D

ate)

(Y

es/N

o)

Summary of Maintenance Required

Dry Extended Detention Embankments a. Is there adequate vegetation and/or ground cover?

A

b. Any undesirable vegetation and woody vegetation?

A

c. Is the basin clear of trash and debris? M d. Is the Low Flow channel clear of debris? SA e. Is there standing water or wet spots within the basin bottom?

SA

f. Any notable Embankment Erosion? SA g. Any Animal Burrows identified? A h. Any notable sediment accumulation within the basin (If a forebay is part of basin, See form B- 3 for forebay maintenance)?

SA

i. Any noted cracking, bulging or sliding of dam/embankment?

A

Condition of upstream Face A


Maintenance Items

Inspection Items

Insp

ectio

n Fr

eque

ncy*

Che

cked

? (Y

es/N

o)

Mai

nten

ance

N

eede

d?

(Yes

/No)

Follo

w u

p In

spec

tion

to v

erify

M

aint

enan

ce

Com

plet

e (D

ate)

(Y

es/N

o)


Condition of downstream Face A Condition at or beyond Toe A Condition of Emergency Spillway A

Emergency Spillway, Trash Racks, Inlet and Outlet Controls j. Is the low flow orifice (outlet control structure) clear of debris or clogged?

SA, S

k. Is the inlet clear and free of debris? SA l. Does riprap need to be cleared of vegetation or replaced at the inlet, downstream of the outlet or associated with the riser pipe?

A

m. Is the basin functioning? M n. Is the emergency spillway clear of debris? A o. Is low flow or weir trash rack free of debris? A p. Is there notable corrosion on trash rack or other metallic surfaces associated with outlet control system?

A

q. Is there excessive sediment accumulation inside riser?

A

r. What is the condition of the concrete//masonry/metal riser and barrels?

A

Cracks or displacement A Minor spalling (<1”) A Major spalling (Rebar exposed) A Joint failures A Water tightness A

General


Maintenance Items

Inspection Items

Insp

ectio

n Fr

eque

ncy*

Che

cked

? (Y

es/N

o)

Mai

nten

ance

N

eede

d?

(Yes

/No)

Follo

w u

p In

spec

tion

to v

erify

M

aint

enan

ce

Com

plet

e (D

ate)

(Y

es/N

o)


s. Is the maintenance easement clear and mowed? SA t. Have there been any filed complaints from residents (Explain below)?

M

u. Does basin need to be mowed? Q v. Does graffiti need to be removed from any portion of the basin?

Q

w. Any notable public hazards? Q x. Any notable seasonal issues – Mosquito? Q y. Any evidence of over application of pesticides or nutrients?

Q

z. Any notable signs of hydrocarbon build up? SA aa. Other (Specify) M

Inspection Frequency Key: A=Annual, SA = Semi-Annual, M=Monthly, Q=Quarterly, S= After major storm (*) Source: Georgia Storm water Management Manual – Adapted from Watershed Management Institute, Inc. (1997)


1. Inspection and Maintenance Notes:

1a. Overall condition of Facility (Check one)

_____ Acceptable _____ Unacceptable 2. Date of Follow up inspection performed: _________________________________________________

3. Dates any maintenance must be completed by: _________________________________________ _________________________________________

CERTIFICATION STATEMENT

I CERTIFY UNDER PENALTY OF LAW THAT I HAVE PERSONALLY EXAMINED AND AM FAMILIAR WITH THE INFORMATION ON THIS FORM AND BELIEVE THE INFORMATION IS TRUE, ACCURATE AND COMPLETE. _____________________________ _____________________ ___________________ Authorized Representative Signature Title Date


This Page Left Intentionally Blank



Wet Extended Detention Pond BMP Identification ___________________________


Maintenance Items

Inspection Items

Insp

ectio

n Fr

eque

ncy*

Che

cked

? (Y

es/N

o)

Mai

nten

ance

N

eede

d?

(Yes

/No)

Follo

w u

p In

spec

tion

to v

erify

M

aint

enan

ce

Com

plet

e (D

ate)

(Y

es/N

o)


Wet Extended Detention Pond Embankments a. Is there adequate vegetation and/or ground cover?

A

b. Any undesirable vegetation and woody vegetation that need to be removed?

A

c. Is there floating/floatable debris removal required?

M

d. Is there visible pollution? M e. Is there erosion occurring at the shoreline? SA f. Any notable embankment erosion? SA g. Any animal burrows identified? A h. Is there evidence of high water marks occurring at elevations near emergency spillway?

SA

i. Any noted cracking, bulging or sliding of dam/embankment?

A

Condition of Upstream Face A Condition of Downstream Face A


Maintenance Items

Inspection Items

Insp

ectio

n Fr

eque

ncy*

Che

cked

? (Y

es/N

o)

Mai

nten

ance

N

eede

d?

(Yes

/No)

Follo

w u

p In

spec

tion

to v

erify

M

aint

enan

ce

Com

plet

e (D

ate)

(Y

es/N

o)


Condition at or beyond Toe A Condition of Emergency Spillway A

j. Any notable sediment accumulation within the basin (If a forebay is part of basin, See form B- 3 for forebay maintenance)?

SA

Emergency Spillway, Trash Racks, Inlet and Outlet Controls k. Are the inlets clear and free of debris? M l. Where riprap is use, does this need to be cleared of vegetation or replaced?

A

m. Is the basin functioning? M n. Is the emergency spillway clear of debris? A o. Are trash racks free of debris? A p. Is there notable corrosion on trash rack or other metallic surfaces associated with outlet control system?

A

q. Is there excessive sediment accumulation within in the wet extended detention pond?

A

r. What is the condition of the concrete//masonry/metal riser and barrels?

A

Cracks or displacement A Minor spalling (<1”) A Major spalling (Rebar exposed) A Joint failures A Water tightness A

s. Has the wet extended detention pond drain valve been exercised?

A


Maintenance Items

Inspection Items

Insp

ectio

n Fr

eque

ncy*

Che

cked

? (Y

es/N

o)

Mai

nten

ance

N

eede

d?

(Yes

/No)

Follo

w u

p In

spec

tion

to v

erify

M

aint

enan

ce

Com

plet

e (D

ate)

(Y

es/N

o)


t. Have other wet extended detention pond control valves been exercised and are these locked?

A

General u. Is the maintenance easement clear and mowed? SA v. Have there been any filed complaints from residents (Explain below)?

M

w. Does the perimeter of the wet detention pond need to be mowed?

Q

x. Does graffiti need to be removed from any portion of the wet detention pond?

Q

y. Any notable public hazards? Q z. Any notable seasonal issues – Mosquito? Q aa. Any evidence of over application of pesticides or nutrients?

Q

ab. Any notable signs of hydrocarbon build up? SA ac. Other (Specify): M



1. Inspection and Maintenance Notes: 1a. Overall condition of Facility (Check one)









Forebay BMP Identification ___________________________


Maintenance Items

Inspection Items

Insp

ectio

n Fr

eque

ncy*

Che

cked

? (Y

es/N

o)

Mai

nten

ance

N

eede

d?

(Yes

/No)

Follo

w u

p In

spec

tion

to v

erify

M

aint

enan

ce

Com

plet

e (D

ate)

(Y

es/N

o)


Forebay Embankments and Forebay Storage Area a. Is there adequate vegetation and/or ground cover?

A

b. Any undesirable vegetation and woody vegetation that need to be removed?

A

c. Any notable embankment erosion? SA d. Any animal burrows identified? A e. Any notable sediment accumulation within the forebay (Removal when depth ≤ 20% design depth)?

Q

f. Forebay size needs to be validated post-sediment removal per design specifications

SA

g. Any noted cracking, bulging or sliding of dam/embankment?

A

Condition of Upstream Face A Condition of Downstream Face A Condition at or beyond Toe A


Maintenance Items

Inspection Items

Insp

ectio

n Fr

eque

ncy*

Che

cked

? (Y

es/N

o)

Mai

nten

ance

N

eede

d?

(Yes

/No)

Follo

w u

p In

spec

tion

to v

erify

M

aint

enan

ce

Com

plet

e (D

ate)

(Y

es/N

o)


Forebay Inlet and Outlet Controls h. Are the inlets clear and free of debris? M i. Where riprap is used, does this need to be cleared of vegetation or replaced?

A

j. Is the basin functioning? M k. Is the transition or weir between forebay and other controls clear and functioning?

A

l. Does the forebay dewater appropriately between storm events?

M, SA, S

m. If the forebay has an underdrain, does this function to dewater the forebay?

A

General n. Is the maintenance easement clear and mowed? SA o. Have there been any filed complaints from residents (Explain below)?

M

p. Does the perimeter of the forebay need to be mowed?

Q

q. Does graffiti need to be removed from any portion of the wet detention pond?

Q

r. Any notable public hazards? Q s. Any notable seasonal issues – Mosquito? Q t. Any evidence of over application of pesticides or nutrients?

Q

u. Any notable signs of hydrocarbon build up? SA v. Other (Specify): M

Inspection Frequency Key: A=Annual, SA = Semi-Annual, M=Monthly, Q=Quarterly, S= After major storm


(*) Source: Georgia Storm water Management Manual – Adapted from Watershed Management Institute, Inc. (1997) 1. Inspection and Maintenance Notes:

1a. Overall condition of Facility (Check one) _____ Acceptable _____ Unacceptable 2. Date of Follow up inspection performed: _________________________________________________



I CERTIFY UNDER PENALTY OF LAW THAT I HAVE PERSONALLY EXAMINED AND AM FAMILIAR WITH THE INFORMATION ON THIS FORM AND BELIEVE THE INFORMATION IS TRUE, ACCURATE AND COMPLETE. _____________________________ _____________________ ___________________


Authorized Representative Signature Title Date





Constructed Wetland BMP Identification ___________________________


Maintenance Items

Inspection Items

Insp

ectio

n Fr

eque

ncy*

Che

cked

? (Y

es/N

o)

Mai

nten

ance

N

eede

d?

(Yes

/No)

Follo

w u

p In

spec

tion

to v

erify

M

aint

enan

ce

Com

plet

e (D

ate)

(Y

es/N

o)


Constructed Wetland Embankments and Perimeter a. Is vegetation healthy and growing? A b. Any undesirable (invasive) vegetation and woody vegetation that need to be removed?

A

c. Is the wetland clear of trash and debris? M d. Any animal burrows identified? A e. Any notable sediment accumulation within the basin (If a forebay/pre-treatment area is part of wetland, See form B- 3 for forebay maintenance)?

Q

Inlets and Outlets f. Are the inlets clear and free of debris? M g. Where riprap is use, does this need to be cleared of vegetation or replaced?

A

General h. Is the constructed wetland functioning? M i. Is there excessive sediment accumulation within in the forebay or the constructed wetland?

A


Maintenance Items

Inspection Items

Insp

ectio

n Fr

eque

ncy*

Che

cked

? (Y

es/N

o)

Mai

nten

ance

N

eede

d?

(Yes

/No)

Follo

w u

p In

spec

tion

to v

erify

M

aint

enan

ce

Com

plet

e (D

ate)

(Y

es/N

o)


j. Is the maintenance easement clear and mowed? SA k. Have there been any filed complaints from residents (Explain below)?

M

l. Does the perimeter of the forebay/pre-treatment area need to be mowed?

Q

m. Any notable public hazards? Q n. Any notable seasonal issues – Mosquito? Q o. Any evidence of over application of pesticides or nutrients?

Q

p. Any notable signs of hydrocarbon build up? SA q. Other (Specify): M




1a. Overall condition of Facility (Check one) _____ Acceptable _____ Unacceptable 2. Date of Follow up inspection performed: _________________________________________________






Operation and Maintenance Inspection Report Form - Filters Page 1 of 5

Appendix B-5 Operation and Maintenance Inspection Report for

Bioretention BMP Identification ___________________________


Maintenance Items

Inspection Items

Insp

ectio

n Fr

eque

ncy*

Che

cked

? (Y

es/N

o)

Mai

nten

ance

N

eede

d?

(Yes

/No)

Follo

w u

p In

spec

tion

to v

erify

M

aint

enan

ce

Com

plet

e (D

ate)

(Y

es/N

o)


Bioretention General a. Is the Bioretention control and contributing areas clear of debris and litter

M

b. Is maintenance easement clear and maintained? Q c. Has there been any dumping of yard wastes into the control?

Q

d. If forebays are used as part of the treatment (See B-3 for forebay maintenance forms).

Q

e. Is the plant height equal or greater than design water depth?

Q

f. Has the control been fertilized per specification? SA g. Do noxious weeds, Invasive species, non-natives vegetation need to be removed from the control?

Q

h. Is the grass height less than or equal to 6”? Q

i. Does the bioretention control show any notable Q


Maintenance Items

Inspection Items

Insp

ectio

n Fr

eque

ncy*

Che

cked

? (Y

es/N

o)

Mai

nten

ance

N

eede

d?

(Yes

/No)

Follo

w u

p In

spec

tion

to v

erify

M

aint

enan

ce

Com

plet

e (D

ate)

(Y

es/N

o)


evidence of erosion? j. Is the bioretention control functioning as designed?

M

k. Does the bioretention control dewater between storms?

Q,S

l. Is there any evidence of standing water? Q m. Is there evidence of sedimentation buildup? A,S n. Is there evidence of sedimentation downstream of the control?

Q

o. Is the underdrain/dewatering system functioning?

Q

p. Are the overflow outlets clear of debris? S,Q q. Does the raingarden control include amended soils? If yes, verification required for the composition of any replacement material is consistent with design specifications (Amended soil replacement recommended if ≤ 90% of design depth).

A,S

r. Has verification been completed for removal of sediments and returning the control to design specifications.

A,S

s. Remove any evidence of blockages. A,S t. Have the controls been blocked or filled inappropriately (e.g. structures, fill, etc.)

A

u. Has there been any notable vandalism associated with the control?

SA


Maintenance Items

Inspection Items

Insp

ectio

n Fr

eque

ncy*

Che

cked

? (Y

es/N

o)

Mai

nten

ance

N

eede

d?

(Yes

/No)

Follo

w u

p In

spec

tion

to v

erify

M

aint

enan

ce

Com

plet

e (D

ate)

(Y

es/N

o)


v. Has dead or diseased vegetation been removed from the control?

SA

w. Does the raingraden need to be weeded? Q x. Other(specify): M

Inspection Frequency Key: A=Annual, SA = Semi-Annual, M=Monthly, S=After major storm (*) Source: Georgia Storm water Management Manual – Adapted from Watershed Management Institute, Inc. (1997)



1a.Overall condition of Facility (Check one) _____ Acceptable _____ Unacceptable 2. Date of Follow up inspection performed: _________________________________________________








Raingardens BMP Identification ___________________________


Maintenance Items

Inspection Items

Insp

ectio

n Fr

eque

ncy*

Che

cked

? (Y

es/N

o)

Mai

nten

ance

N

eede

d?

(Yes

/No)

Follo

w u

p In

spec

tion

to v

erify

M

aint

enan

ce

Com

plet

e (D

ate)

(Y

es/N

o)


Raingardens General a. Is the Raingarden control and contributing areas clear of debris and litter

Q

b. Is maintenance easement clear and maintained? Q c. Has there been any dumping of yard wastes into the control?

Q


Q

e. Is the plant height equal or greater than design water depth?

Q

f. Has the control been fertilized per specification? SA g. Do noxious weeds, Invasive species, non-natives vegetation need to be removed from the control?

Q

h. Is the perimeter grass height less than or equal to 6”?

Q

i. Does the raingarden control show any notable Q


Maintenance Items

Inspection Items

Insp

ectio

n Fr

eque

ncy*

Che

cked

? (Y

es/N

o)

Mai

nten

ance

N

eede

d?

(Yes

/No)

Follo

w u

p In

spec

tion

to v

erify

M

aint

enan

ce

Com

plet

e (D

ate)

(Y

es/N

o)


evidence of erosion? j. Is the raingarden control functioning as designed?

M

k. Does the rainwater control dewater between storms?

S,Q

l. Is there any evidence of standing water? Q m. Is there evidence of sediment buildup? A,S n. Is there evidence of sedimentation downstream of the control?

Q

o. Is the underdrain/dewatering system functioning?

Q

p. Are the overflow outlets clear of debris? S,M q. Does the raingarden control include amended soils? If yes, verification required of the composition of any replacement material is consistent with design specifications (Media replacement recommended if ≤ 90% of design depth).

A,S

r. Has verification been completed for removal of sediments and returning the control to design specifications.

A,S

s. Remove any evidence of blockages. A,S t. Have the controls been blocked or filled inappropriately (e.g. structures, fill, etc.)

A

u. Has there been any notable vandalism associated with the control?

SA


Maintenance Items

Inspection Items

Insp

ectio

n Fr

eque

ncy*

Che

cked

? (Y

es/N

o)

Mai

nten

ance

N

eede

d?

(Yes

/No)

Follo

w u

p In

spec

tion

to v

erify

M

aint

enan

ce

Com

plet

e (D

ate)

(Y

es/N

o)


v. Has dead or diseased vegetation been removed from the control?

SA

w. Does the raingraden need to be weeded? Q

x. Other(specify): M










Operation and Maintenance Inspection Report Form - Infiltration Page 1 of 5


Infiltration Basins BMP Identification ___________________________


Maintenance Items

Inspection Items

Insp

ectio

n Fr

eque

ncy*

Che

cked

? (Y

es/N

o)

Mai

nten

ance

N

eede

d?

(Yes

/No)

Follo

w u

p In

spec

tion

to v

erify

M

aint

enan

ce

Com

plet

e (D

ate)

(Y

es/N

o)


Infiltration Basins Embankments and Perimeter a. Is the infiltration basin and contributing area clear of debris and litter?

Q

b. Is the maintenance easement clear and free of debris?

A

c. Is there any evidence of dumping of yard wastes into the control?

Q


A

e. Does the infiltration basin need to be Aerated and dethatched?

A

f. Is there adequate vegetation and/or ground cover?

A

g. Do noxious weeds, Invasive species, non-natives vegetation need to be removed from the control?

Q

h. Is the grass height less than or equal to 6” within Q


Maintenance Items

Inspection Items

Insp

ectio

n Fr

eque

ncy*

Che

cked

? (Y

es/N

o)

Mai

nten

ance

N

eede

d?

(Yes

/No)

Follo

w u

p In

spec

tion

to v

erify

M

aint

enan

ce

Com

plet

e (D

ate)

(Y

es/N

o)


in the bottom of the basin? i. Are there any signs of petroleum Hydrocarbon contamination?

A

j. Any noticeable odors detected? Q k. Any discolored standing water? M, S l. Any visual structural issues noted? M Basin Function and Inlet/Outlet controls m. Does the control dewater between storms? M,S n. Is the control functioning? A o. Remove and/or repair any dead or dying grass on the bottom and side slopes of the control.

A,S

p. Is there any evidence of erosion downstream of the outlet?

A,S

q. Have the inflow pipes/conveyances been checked to ensure energy dissipaters are in place and functioning?

Q

r. Are the sediments ≤ 20% of design depth of the control?

A

s. Has verification been completed for removal of sediments and returning the control to design specifications.

A,S

t. Is the outlet in good condition and is there any evidence of downstream sedimentation?

A,S

u. Is the emergency spillway clear of debris? A,S General v. Any evidence of over application of pesticides A,S


Maintenance Items

Inspection Items

Insp

ectio

n Fr

eque

ncy*

Che

cked

? (Y

es/N

o)

Mai

nten

ance

N

eede

d?

(Yes

/No)

Follo

w u

p In

spec

tion

to v

erify

M

aint

enan

ce

Com

plet

e (D

ate)

(Y

es/N

o)


or nutrients? w. Any notable public hazards? A x. Any notable seasonal issues – Mosquito? A y. Repair undercuts and eroded areas at inflow and outflow structures

A

z. If the control has an underdrain, Is the underdrain/ dewatering system functioning?

A,S

aa. Other (Specify): M

Inspection Frequency Key: A=Annual, SA = Semi-Annual, M=Monthly, Q=Quarterly, S=After major storm (*) Source: Georgia Storm water Management Manual – Adapted from Watershed Management Institute, Inc. (1997)


1. Inspection and Maintenance Notes: 1a.Overall condition of Facility (Check one)









Infiltration - Trench BMP Identification ___________________________


Maintenance Items

Inspection Items

Insp

ectio

n Fr

eque

ncy

Che

cked

? (Y

es/N

o)

Mai

nten

ance

N

eede

d?

(Yes

/No)

Follo

w u

p In

spec

tion

to v

erify

M

aint

enan

ce

Com

plet

e (D

ate)

(Y

es/N

o)


Infiltration Trench Embankments and Perimeter a. Is the infiltration trench and contributing area clear of debris and litter?

Q

b. Is the maintenance easement clear and free of debris?

Q

c. Is there any evidence of dumping of yard wastes into the control?

Q


A

e. Does the infiltration trench need to be Aerated and dethatched?

A

f. Is there adequate vegetation and/or ground cover?

A

g. Do noxious weeds, Invasive species, non-natives vegetation need to be removed from the control?

A

h. Is the grass height less than or equal to 6” within Q


Maintenance Items

Inspection Items

Insp

ectio

n Fr

eque

ncy

Che

cked

? (Y

es/N

o)

Mai

nten

ance

N

eede

d?

(Yes

/No)

Follo

w u

p In

spec

tion

to v

erify

M

aint

enan

ce

Com

plet

e (D

ate)

(Y

es/N

o)


in the trench? i. Are there any signs of petroleum Hydrocarbon contamination?

A

j. Any noticeable odors detected? A k. Any discolored standing water? Q,S l. Any visual structural issues noted? M m. Does the control dewater between storms? Q,S Trench Function, Inlet and Outlet Control n. Is the control functioning? A o. Remove and/or repair any dead or dying grass within the control?

A,S

p. Is there any evidence of erosion downstream of the outlet?

A,S

q. Have the inflow pipes/conveyances been checked to ensure energy dissipaters are in place and functioning?

A

r. Are the sediments ≤ 20% of design depth of the control?

A

t. Has verification been completed for removal of sediments and returning the control to design specifications.

A,S

u. Is the outlet in good condition and is there any evidence of downstream sedimentation?

A,S

v. Is the emergency spillway clear of debris? A,S General w. Any evidence of over application of pesticides A,S


Maintenance Items

Inspection Items

Insp

ectio

n Fr

eque

ncy

Che

cked

? (Y

es/N

o)

Mai

nten

ance

N

eede

d?

(Yes

/No)

Follo

w u

p In

spec

tion

to v

erify

M

aint

enan

ce

Com

plet

e (D

ate)

(Y

es/N

o)


or nutrients? x. Any notable public hazards? A y. Any notable seasonal issues – Mosquito? A z. Is erosion repair necessary at inflow and outflow structures?

A

aa. If the control has an underdrain, Is the underdrain/ dewatering system functioning?

A,S

ab. If riprap is used as the trench filter material, does this need to be cleared of vegetation and does any material need to be replaced?

SA

ac. Other (Specify): M



1. Inspection and Maintenance Notes: 1a.Overall condition of Facility (Check one)









Infiltration – Porous Pavement BMP Identification ___________________________


Maintenance Items

Inspection Items

Insp

ectio

n Fr

eque

ncy*

Che

cked

? (Y

es/N

o)

Mai

nten

ance

N

eede

d?

(Yes

/No)

Follo

w u

p In

spec

tion

to v

erify

M

aint

enan

ce

Com

plet

e (D

ate)

(Y

es/N

o)


Infiltration – Porous Pavement General a. Is the porous pavement and contributing areas clear of debris and litter?

M

b. Do noxious weeds, Invasive species, non-natives vegetation need to be removed from the control?

M

c. Are there any signs of petroleum Hydrocarbon contamination?

M

d. Any visual structural issues noted? M e. Does the control dewater between storms? M f. Is the control functioning? A g. Any notable public hazards? A h. Has the pavement been sealed? A,S i. Is there any evidence of surface staining that might indicate issues associated with the stone subgrade or other sub-surface drainage system?

M,S

j. Have the upland and adjacent areas been M


Maintenance Items

Inspection Items

Insp

ectio

n Fr

eque

ncy*

Che

cked

? (Y

es/N

o)

Mai

nten

ance

N

eede

d?

(Yes

/No)

Follo

w u

p In

spec

tion

to v

erify

M

aint

enan

ce

Com

plet

e (D

ate)

(Y

es/N

o)


mowed? k. Does the pavement surface need to mechanically swept and/or vacuumed?

M.S

l. Other (Specify): M










Operation and Maintenance Inspection Report Form - Swale Page 1 of 5


Enhanced Water Quality Swale BMP Identification ___________________________


Maintenance Items

Inspection Items

Insp

ectio

n Fr

eque

ncy*

Che

cked

? (Y

es/N

o)

Mai

nten

ance

N

eede

d?

(Yes

/No)

Follo

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p In

spec

tion

to v

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M

aint

enan

ce

Com

plet

e (D

ate)

(Y

es/N

o)


Enhanced Water Quality Swale Erosion, Sedimentation and Vegetation a. Control and adjacent areas clear of debris and trash

A

b. Are Inlets and outlets clear of debris? A c. Any evidence of dumping of yard wastes into the control?

A

d. If Energy Dissipaters are present, are these clear of debris and functional?

A

e. Are adjacent areas stabilized? A f. Is the grass height equal to or < 6”? Q g. Fertilizer application information if known (Date applied and type)

A

h. Is there any evidence of erosion within the swale?

Q,S

i. Do noxious weeds, Invasive species, non-natives vegetation need to be removed from the control?

A

j. Any evidence of surface water oil/gas sheen? A


Maintenance Items

Inspection Items

Insp

ectio

n Fr

eque

ncy*

Che

cked

? (Y

es/N

o)

Mai

nten

ance

N

eede

d?

(Yes

/No)

Follo

w u

p In

spec

tion

to v

erify

M

aint

enan

ce

Com

plet

e (D

ate)

(Y

es/N

o)


k. Any noted discolored standing water in the swale?

Q.S

l. Is there any distinct odor emitting from the swale?

A

m. Is there down cutting in the flow line of the swale?

A

n. Is there evidence of erosion at the transition between adjacent land and the swale?

A

o. Does the control dewater appropriately between storms as designed?

Q,S

p. Any evidence of erosion downstream at the outlet of the swale?

A,S

q. Is there uneven settlement or pockets of standing water in or along the swale?

Q,S

r. Is swale clean of sediments (Sediments should not be > than 20% of swale design depth)?

A

General s. Are sumps greater than 50% full of sediment? A,S t. Are the swale outlets in good condition? A,S u. Any evidence of erosion A,S v. Any evidence of blockages A,S w. Has facility been blocked or filled inappropriately (e.g. structures, fill, etc.)?

A

x. Has the swale been checked for evidence of erosion/washout of inlet/outlet filter media

A

y. When sediment is removed or maintenance A


Maintenance Items

Inspection Items

Insp

ectio

n Fr

eque

ncy*

Che

cked

? (Y

es/N

o)

Mai

nten

ance

N

eede

d?

(Yes

/No)

Follo

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p In

spec

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to v

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M

aint

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ce

Com

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e (D

ate)

(Y

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performed, the swale cross section dimensions shall be checked after to ensure sized as per design. z. If there is an underdrain or dewatering system, are the openings or gravel free of debris?

A

aa. Is swale functioning? M ab. Has documentation of erosion associated with other drainage structures discharging into the swale/strip been performed?

A

ab. Have non-approved structures within the swale been removed?

A

ad. Other (Specify):



1. Inspection and Maintenance Notes







Operation and Maintenance Inspection Report Form - Strips Page 1 of 5


Vegetated Filter Strips BMP Identification ___________________________


Maintenance Items

Inspection Items

Insp

ectio

n Fr

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ncy*

Che

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? (Y

es/N

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Mai

nten

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N

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d?

(Yes

/No)

Follo

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spec

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to v

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M

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Com

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e (D

ate)

(Y

es/N

o)


Vegetated Filter Strips Erosion, Sedimentation and Vegetation a. Control and adjacent areas clear of debris and trash

A

b. Are Inlets and outlets clear of debris? Q c. Any evidence of dumping of yard wastes into the control?

Q

d. If Energy Dissipater are present, are these clear of debris and functional?

Q

e. Are adjacent area stabilized? A f. Is the grass height equal to or < 6”, is mowing required?

Q

g. Fertilizer application information if known (Date applied and type)

A

h. Is there any evidence of erosion within the control?

Q

i. Do noxious weeds, Invasive species, non-natives vegetation need to be removed from the control?

A


Maintenance Items

Inspection Items

Insp

ectio

n Fr

eque

ncy*

Che

cked

? (Y

es/N

o)

Mai

nten

ance

N

eede

d?

(Yes

/No)

Follo

w u

p In

spec

tion

to v

erify

M

aint

enan

ce

Com

plet

e (D

ate)

(Y

es/N

o)


j. Any noted discolored standing water in the control?

Q,A

k. Is there any distinct odor emanating from the control?

Q

l. Is there evidence of erosion at the transition between adjacent land and the vegetated strip?

Q,S

m. Does the control dewater appropriately between storms as designed?

S

n. Any evidence of erosion downstream of vegetated strip area?

A,S

o. Is the vegetated strip clean of sediments? A p. Any evidence of erosion A,S q. Any evidence of blockages A,S General r. Has facility been blocked or filled inappropriately (e.g. structures, fill, etc.)?

A

s. Have non-approved structures within the vegetated strip area been removed?

A

t. Is the vegetated strip functioning? M


Maintenance Items

Inspection Items

Insp

ectio

n Fr

eque

ncy*

Che

cked

? (Y

es/N

o)

Mai

nten

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N

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d?

(Yes

/No)

Follo

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p In

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to v

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M

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ate)

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u. Other (Specify): M



1. Inspection and Maintenance Notes







Operation and Maintenance Inspection Report Form - MTD Page 1 of 4


Manufactured Treatment Devices (MTD) BMP Identification ___________________________


Maintenance Items

Inspection Items

Insp

ectio

n Fr

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ncy*

Che

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? (Y

es/N

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Mai

nten

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(Yes

/No)

Follo

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Manufactured Treatment Devices a. Inspect inflow areas for standing water or evidence of recently standing water.

M

b. Inspect for clogging of device. Remove and dispose of sediments or debris as needed.

M

c. Inspect structure using inspection port/ access structure.

A

d. Follow manufacturers recommended safety procedures for maintaining controls. These may include confined space entry requirements.

A

e. Properly ventilate space prior to entry for cleaning and inspection.

A

f. Remove sediment as needed when average depths reach 1” or per the manufacturers recommendation.

A

g. Inspect all structural components for cracking, subsidence, erosion and deterioration.

A


Maintenance Items

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Insp

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n Fr

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? (Y

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h. Other :










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0 1,600 3,200800Feet

Legend

Location, BMP Description

! 1125 Kinnear Road, Dry Detention Basin

! SR 315 and Ackerman Rd, Wet Retention

! 2355 Olentangy River Road, Dry Detention Basin

! Ackerman Rd/Olentangy Rvr Rd, Dry Detention Basin

h Polo Parking Lot, Water Quality Units (2) and Underground Detention

X 2700 Kenny Road, Bioswale

# 318 W. 12th Ave., Rain Gardens

" Cancer Res. Ins.-Hamilton Hall, Underground Detention Facility

" Fisher College of Business, Underground Detention Tank

" Health Science Quadrangle, Underground Detention Tank

" Larkins Hall - RPAC, Underground Detention Facility

" 9th Ave East Parking Garage, Underground Detention Tank (Future)

" Student Academic Services, Underground Detention Facility (Future)

" Student Union, Underground Detention Facility (Future)

" Tuttle Park Garage, Underground Detention Tank

% Parking Lot 'M', Pervious Pavement

% 2015 Neil Avenue, Pervious Pavement

Campus Areas

Figure 2-1BMP Location Map

±

Page 2 of 40Ohio EPA Permit No.: OHC000003

TABLE OF CONTENTS

PART I. COVERAGE UNDER THIS PERMITA. Permit AreaB. EligibilityC. Requiring an individual permit or an alternative general permitD. Permit requirements when portions of a site are soldE. Authorization

PART II. NOTICE OF INTENT REQUIREMENTSA. Deadlines for notificationB. Failure to notifyC. Where to submit an NOID. Additional notificationE. Renotification

PART III. STORM WATER POLLUTION PREVENTION PLAN (SWP3)A. Storm Water Pollution Prevention PlansB. TimingC. SWP3 Signature and ReviewD. AmendmentsE. Duty to inform contractors and subcontractorsF. Total Maximum Daily Load (TMDL) allocationsG. SWP3 Requirements

PART IV. NOTICE OF TERMINATION REQUIREMENTSA. Failure to notifyB. When to submit an NOTC. How to submit an NOT

PART V. STANDARD PERMIT CONDITIONSA. Duty to complyB. Continuation of the expired general permitC. Need to halt or reduce activity not a defenseD. Duty to mitigateE. Duty to provide informationF. Other informationG. Signatory requirementsH. CertificationI. Penalties for falsification of monitoring systemsJ. Oil and hazardous substance liabilityK. Property rightsL. SeverabilityM. TransfersN. Environmental lawsO. Proper operation and maintenanceP. Inspection and entry

PART VI. REOPENER CLAUSE

PART VII. DEFINITIONS


PART I. COVERAGE UNDER THIS PERMIT

A. Permit Area.

This permit covers the entire State of Ohio.

B. Eligibility.

1. Construction activities covered. Except for storm water discharges identified underPart I.B.2, this permit may cover all new and existing discharges composedentirely of storm water discharges associated with construction activity that entersurface waters of the State or a storm drain leading to surface waters of the State.

For the purposes of this permit, construction activities include any clearing,grading, excavating, grubbing and/or filling activities that disturb one or more acresof land. Discharges from trench dewatering are also covered by this permit aslong as the dewatering activity is carried out in accordance with the practicesoutlined in Part III.G.2.g.iv of this permit. The threshold acreage includes theentire area disturbed in the larger common plan of development or sale.

This permit also authorizes storm water discharges from support activities (e.g.,concrete or asphalt batch plants, equipment staging yards, material storage areas,excavated material disposal areas, borrow areas) provided:

a. The support activity is directly related to a construction site that is required tohave NPDES permit coverage for discharges of storm water associated withconstruction activity;

b. The support activity is not a commercial operation serving multiple unrelatedconstruction projects and does not operate beyond the completion of theconstruction activity at the site it supports;

c. Appropriate controls and measures are identified in a storm water pollutionprevention plan (SWP3) covering the discharges from the support activity;and

d. The support activity is on or contiguous with the property defined in the NOI(off-site borrow pits and soil disposal areas, which serve only one project, donot have to be contiguous with the construction site);


Part I.B

2. Limitations on coverage. The following storm water discharges associated withconstruction activity are not covered by this permit:

a. Storm water discharges that originate from the site after construction activitieshave been completed, including any temporary support activity, and the sitehas achieved final stabilization. Industrial post-construction storm waterdischarges may need to be covered by an NPDES permit;

b. Storm water discharges associated with construction activity that the directorhas shown to be or may reasonably expect to be contributing to a violation ofa water quality standard; and

c. Storm water discharges authorized by an individual NPDES permit or analternative NPDES general permit;

3. Waivers. After March 10, 2003, sites whose larger common plan of developmentor sale have at least one, but less than five acres of land disturbance, which wouldotherwise require permit coverage for storm water discharges associated withconstruction activities, may request that the director waive their permitrequirement. Entities wishing to request such a waiver must certify in writing thatthe construction activity meets one of the two waiver conditions:

a. Rainfall erosivity waiver. For a construction site to qualify for the rainfallerosivity waiver, the cumulative rainfall erosivity over the project durationmust be five or less and the site must be stabilized with at least a 70 percentvegetative cover or other permanent, non-erosive cover. The rainfall erosivitymust be calculated according to the method in U.S. EPA Fact Sheet 3.1Construction Rainfall Erosivity Waiver dated January 2001. If it is determinedthat a construction activity will take place during a time period where therainfall erosivity factor is less than five, a written waiver certification must besubmitted to Ohio EPA at least 21 days before construction activity isscheduled to begin. If the construction activity will extend beyond the datesspecified in the waiver certification, the operator must either: (a) recalculatethe waiver using the original start date with the new ending date (if the Rfactor is still less than five, a new waiver certification must be submitted) or(b) submit an NOI application form and fee for coverage under this generalpermit at least seven days prior to the end of the waiver period (seeAttachment A); or


Part I.B.3

b. TMDL (Total Maximum Daily Load) waiver. Storm water controls are notneeded based on a TMDL approved or established by U.S. EPA thataddresses the pollutant(s) of concern or, for non-impaired waters that do notrequire TMDLs, an equivalent analysis that determines allocations for smallconstruction sites for the pollutant(s) of concern or that determines that suchallocations are not needed to protect water quality based on consideration ofexisting in-stream concentrations, expected growth in pollutant contributionsfrom all sources, and a margin of safety. The pollutant(s) of concern includesediment or a parameter that addresses sediment (such as total suspendedsolids, turbidity or siltation) and any other pollutant that has been identified asa cause of impairment of any water body that will receive a discharge fromthe construction activity. The operator must certify to the director of OhioEPA that the construction activity will take place, and storm water dischargeswill occur, within the drainage area addressed by the TMDL or equivalentanalysis. A written waiver certification must be submitted to Ohio EPA atleast 21 days before the construction activity is scheduled to begin.

4. Prohibition on non-storm water discharges. All discharges covered by this permitmust be composed entirely of storm water with the exception of the following:discharges from fire fighting activities; fire hydrant flushings; potable water sourcesincluding waterline flushings; irrigation drainage; lawn watering; routine externalbuilding washdown which does not use detergents; pavement washwaters wherespills or leaks of toxic or hazardous materials have not occurred (unless all spilledmaterial has been removed) and where detergents are not used; air conditioningcondensate; springs; uncontaminated ground water from trench or well pointdewatering and foundation or footing drains where flows are not contaminated withprocess materials such as solvents. Dewatering activities must be done incompliance with Part III.G.2.g.iv of this permit. Discharges of material other thanstorm water or the authorized non-storm water discharges listed above mustcomply with an individual NPDES permit or an alternative NPDES general permitissued for the discharge.

Except for flows from fire fighting activities, sources of non-storm water listedabove that are combined with storm water discharges associated with constructionactivity must be identified in the SWP3. The SWP3 must identify and ensure theimplementation of appropriate pollution prevention measures for the non-stormwater component(s) of the discharge.


Part I.B

5. Spills and unintended releases (Releases in excess of Reportable Quantities).This permit does not relieve the permittee of the reporting requirements of 40 CFRPart 117 and 40 CFR Part 302. In the event of a spill or other unintended release,the discharge of hazardous substances in the storm water discharge(s) from aconstruction site must be minimized in accordance with the applicable storm waterpollution prevention plan for the construction activity and in no case, during any24-hour period, may the discharge(s) contain a hazardous substance equal to orin excess of reportable quantities.

40 CFR Part 117 sets forth a determination of the reportable quantity for eachsubstance designated as hazardous in 40 CFR Part 116. The regulation appliesto quantities of designated substances equal to or greater than the reportablequantities, when discharged to surface waters of the State. 40 CFR Part 302designates under section 102(a) of the Comprehensive Environmental Response,Compensation and Liability Act of 1980, those substances in the statutes referredto in section 101(14), identifies reportable quantities for these substances and setsforth the notification requirements for releases of these substances. Thisregulation also sets forth reportable quantities for hazardous substancesdesignated under section 311(b)(2)(A) of the Clean Water Act (CWA).

C. Requiring an individual NPDES permit or an alternative NPDES general permit.

1. The director may require an alternative permit. The director may require anyoperator eligible for this permit to apply for and obtain either an individual NPDESpermit or coverage under an alternative NPDES general permit in accordance withOAC Rule 3745-38-04. Any interested person may petition the director to takeaction under this paragraph.

The director will send written notification that an alternative NPDES permit isrequired. This notice shall include a brief statement of the reasons for thisdecision, an application form and a statement setting a deadline for the operatorto file the application. If an operator fails to submit an application in a timelymanner as required by the director under this paragraph, then coverage, if ineffect, under this permit is automatically terminated at the end of the day specifiedfor application submittal.


Part I.C

2. Operators may request an individual NPDES permit. Any owner or operatoreligible for this permit may request to be excluded from the coverage of this permitby applying for an individual permit. The owner or operator shall submit anindividual application with reasons supporting the request to the director inaccordance with the requirements of 40 CFR 122.26. If the reasons adequatelysupport the request, the director shall grant it by issuing an individual NPDESpermit.

3. When an individual NPDES permit is issued to an owner or operator otherwisesubject to this permit or the owner or operator is approved for coverage under analternative NPDES general permit, the applicability of this permit to the individualNPDES permittee is automatically terminated on the effective date of the individualpermit or the date of approval for coverage under the alternative general permit,whichever the case may be.

D. Permit requirements when portions of a site are sold

If an operator obtains a permit for a development, and then the operator (permittee)sells off lots or parcels within that development, permit coverage must be continued onthose lots until a Notice of Termination (NOT) in accordance with Part IV.B issubmitted. For developments which require the use of centralized sediment anderosion controls (i.e., controls that address storm water runoff from one or more lots)for which the conveyance of permit coverage for a portion of the development will eitherprevent or impair the implementation of the controls and therefore jeopardizecompliance with the terms and conditions of this permit, the permittee will be requiredto maintain responsibility for the implementation of those controls. For developmentswhere this is not the case, it is the permittee’s responsibility to temporarily stabilize alllots sold to individual lot owners unless an exception is approved in accordance withPart III.G.4. In cases where permit coverage for individual lot(s) will be conveyed, thepermittee shall inform, in writing, the individual lot owner of the obligations under thispermit and ensure that the Individual Lot NOI application is submitted to Ohio EPA.

E. Authorization

1. Obtaining authorization to discharge. Operators that discharge storm waterassociated with construction activity must submit an NOI application form inaccordance with the requirements of Part II of this permit to obtain authorizationto discharge under this general permit. As required under OAC Rule 3745-38-06(E), the director, in response to the NOI submission, shall notify the applicantin writing that he/she has been granted general permit coverage to dischargestorm water associated with construction activity under the terms and conditionsof this permit or that the applicant must apply for an individual NPDES permit orcoverage under an alternate general NPDES permit as described in Part I.C.1.


Part I.E

2. No release from other requirements. No condition of this permit shall release thepermittee from any responsibility or requirements under other environmentalstatutes or regulations. Other permit requirements commonly associated withconstruction activities include, but are not limited to, section 401 water qualitycertifications, isolated wetland permits, permits to install sanitary sewers or otherdevices that discharge or convey polluted water, permits to install drinking waterlines, single lot sanitary system permits and disturbance of land which was usedto operate a solid or hazardous waste facility (i.e., coverage under this NPDESgeneral permit does not satisfy the requirements of OAC Rule 3745-27-13 or ORCSection 3734.02(H)). This permit does not relieve the permittee of otherresponsibilities associated with construction activities such as contacting the OhioDepartment of Natural Resources, Division of Water, to ensure proper wellinstallation and abandonment of wells.

Part II. NOTICE OF INTENT REQUIREMENTS

A. Deadlines for notification.

Initial coverage: Operators who intend to obtain initial coverage for a storm waterdischarge associated with construction activity under this general permit must submita complete and accurate NOI application form and appropriate fee at least 21 daysprior to the commencement of construction activity. If more than one operator, asdefined in Part VII of this general permit, will be engaged at a site, each operator shallseek coverage under this general permit. Where one operator has already submittedan NOI prior to other operator(s) being identified, the additional operator shall requestmodification of coverage to become a co-permittee. In such instances, the co-permittees shall be covered under the same facility permit number. No additionalpermit fee is required.

Individual lot transfer of coverage: Operators must each submit an individual lot noticeof intent (Individual Lot NOI) application form (no fee required) to Ohio EPA at leastseven days prior to the date that they intend to accept responsibility for permitrequirements for their portion of the original permitted development from the previouspermittee. The original permittee may submit an Individual Lot NOT at the time theIndividual Lot NOI is submitted. Transfer of permit coverage is not granted until anapproval letter from the director of Ohio EPA is received by the applicant.

B. Failure to notify.

Operators who fail to notify the director of their intent to be covered and who dischargepollutants to surface waters of the State without an NPDES permit are in violation ofORC Chapter 6111. In such instances, Ohio EPA may bring an enforcement action forany discharges of storm water associated with construction activity.


Part II

C. Where to submit an NOI.

Operators seeking coverage under this permit must submit a signed NOI form, providedby Ohio EPA, to the address found in the associated instructions.

D. Additional notification.

The permittee shall make NOIs and SWP3s available upon request of the director ofOhio EPA, local agencies approving sediment and erosion control plans, grading plansor storm water management plans, local governmental officials, or operators ofmunicipal separate storm sewer systems (MS4s) receiving drainage from the permittedsite. Each operator that discharges to an NPDES permitted MS4 shall provide a copyof its Ohio EPA NOI submission to the MS4 in accordance with the MS4'srequirements, if applicable.

E. Renotification.

Upon renewal of this general permit, the permittee is required to notify the director ofhis intent to be covered by the general permit renewal. Permittees covered under theprevious NPDES general permits for storm water discharges associated withconstruction activity (NPDES permit numbers OHR100000 and OHC000002) shall havecontinuing coverage under this permit. The permittees covered under OHR100000 orOHC000002 shall submit a letter within 90 days of receipt of written notification by OhioEPA expressing their intent that coverage be continued. There is no fee associatedwith these letters of intent for continued coverage. Permit coverage will be terminatedafter the 90-day period if the letter is not received by Ohio EPA. Ohio EPA will provideinstructions on the contents of the letter and where it is to be sent within the notificationletter.


PART III. STORM WATER POLLUTION PREVENTION PLAN (SWP3)

A. Storm Water Pollution Prevention Plans.

A SWP3 shall be developed for each site covered by this permit. For a multi-phaseconstruction project, a separate NOI shall be submitted when a separate SWP3 will beprepared for subsequent phases. SWP3s shall be prepared in accordance with soundengineering and/or conservation practices by a professional experienced in the designand implementation of standard erosion and sediment controls and storm watermanagement practices addressing all phases of construction. The SWP3 shall identifypotential sources of pollution which may reasonably be expected to affect the qualityof storm water discharges associated with construction activities. The SWP3 shall bea comprehensive, stand-alone document, which is not complete unless it contains theinformation required by Part III.G of this permit. In addition, the SWP3 shall describeand ensure the implementation of best management practices (BMPs) that reduce thepollutants in storm water discharges during construction and pollutants associated withpost-construction activities to ensure compliance with ORC Section 6111.04, OACChapter 3745-1 and the terms and conditions of this permit.

B. Timing

A SWP3 shall be completed prior to the timely submittal of an NOI and updated inaccordance with Part III.D. Upon request and good cause shown, the director maywaive the requirement to have a SWP3 completed at the time of NOI submission. Ifa waiver has been granted, the SWP3 must be completed prior to the initiation ofconstruction activities. The SWP3 must be implemented upon initiation of constructionactivities.

Permittees continuing coverage from the previous generations of this permit(OHR100000 and OHC000002) that have initiated construction activity prior to thereceipt of the first written notification from Ohio EPA to submit a letter of intent tocontinue coverage, as required in Part II.E, are not required to update their SWP3 asa result of this renewal (OHC000003). Permittees continuing coverage from theprevious generations of this permit (OHR100000 and OHC000002) that have notinitiated construction activity prior to the receipt of the first written notification from OhioEPA to submit a letter of intent to continue coverage, as required in Part II.E, arerequired to update their SWP3 as a result of this renewal (OHC000003).

C. SWP3 Signature and Review.

1. Plan Signature and Retention On Site. The SWP3 shall include the certificationin Part V.H., be signed in accordance with Part V.G., and be retained on siteduring working hours.


Part III.C

2. Plan Availability

a. On-site: The plan shall be made available immediately upon request of thedirector or his authorized representative during working hours. A copy of theNOI and letter granting permit coverage under this general permit also shallbe made available at the site.

b. By written request: The permittee must provide a copy of the SWP3 within10 days upon written request by any of the following:

i. The director or the director’s authorized representative;

ii. A local agency approving sediment and erosion plans, grading plans orstorm water management plans; or

iii. In the case of a storm water discharge associated with constructionactivity which discharges through a municipal separate storm sewersystem with an NPDES permit, to the operator of the system.

c. To the public: All NOIs, general permit approval for coverage letters, andSWP3s are considered reports that shall be available to the public inaccordance with the Ohio Public Records law. The permittee shall makedocuments available to the public upon request or provide a copy at publicexpense, at cost, in a timely manner. However, the permittee may claim toOhio EPA any portion of an SWP3 as confidential in accordance with Ohiolaw.

3. Plan Revision. The director or authorized representative, may notify the permitteeat any time that the SWP3 does not meet one or more of the minimumrequirements of this part. Within 10 days after such notification from the director(or as otherwise provided in the notification) or authorized representative, thepermittee shall make the required changes to the SWP3 and, if requested, shallsubmit to Ohio EPA the revised SWP3 or a written certification that the requestedchanges have been made.

D. Amendments

The permittee shall amend the SWP3 whenever there is a change in design,construction, operation or maintenance, which has a significant effect on the potentialfor the discharge of pollutants to surface waters of the State or if the SWP3 proves tobe ineffective in achieving the general objectives of controlling pollutants in storm waterdischarges associated with construction activity. Amendments to the SWP3 may bereviewed by Ohio EPA in the same manner as Part III.C.


Part III

E. Duty to inform contractors and subcontractors

The permittee shall inform all contractors and subcontractors not otherwise defined as“operators” in Part VII of this general permit, who will be involved in the implementationof the SWP3, of the terms and conditions of this general permit. The permittee shallmaintain a written document containing the signatures of all contractors andsubcontractors involved in the implementation of the SWP3 as proof acknowledgingthat they reviewed and understand the conditions and responsibilities of the SWP3.The written document shall be created and signatures of each individual contractorshall be obtained prior to their commencement of work on the construction site.

F. Total Maximum Daily Load (TMDL) allocations

If a TMDL is approved for any waterbody into which the permittee’s site discharges andrequires specific BMPs for construction sites, the director may require the permittee torevise his/her SWP3.

G. SWP3 Requirements

Operations that discharge storm water from construction activities are subject to thefollowing requirements and the SWP3 shall include the following items:

1. Site description. Each SWP3 shall provide:

a. A description of the nature and type of the construction activity (e.g., lowdensity residential, shopping mall, highway, etc.);

b. Total area of the site and the area of the site that is expected to be disturbed(i.e., grubbing, clearing, excavation, filling or grading, including off-site borrowareas);

c. An estimate of the impervious area and percent imperviousness created bythe construction activity;

d. A calculation of the runoff coefficients for both the pre-construction and postconstruction site conditions;

e. Existing data describing the soil and, if available, the quality of any dischargefrom the site;

f. A description of prior land uses at the site;


Part III.G.1

g. An implementation schedule which describes the sequence of majorconstruction operations (i.e., grubbing, excavating, grading, utilities andinfrastructure installation) and the implementation of erosion, sediment andstorm water management practices or facilities to be employed during eachoperation of the sequence;

h. The name and/or location of the immediate receiving stream or surfacewater(s) and the first subsequent named receiving water(s) and the arealextent and description of wetlands or other special aquatic sites at or near thesite which will be disturbed or which will receive discharges from disturbedareas of the project. For discharges to an MS4, the point of discharge to theMS4 and the location where the MS4 ultimately discharges to a stream orsurface water of the State must be indicated;

i. For subdivided developments where the SWP3 does not call for a centralizedsediment control capable of controlling multiple individual lots, a detaildrawing of a typical individual lot showing standard individual lot erosion andsediment control practices.

This does not remove the responsibility to designate specific erosion andsediment control practices in the SWP3 for critical areas such as steepslopes, stream banks, drainage ways and riparian zones.

j. Location and description of any storm water discharges associated withdedicated asphalt and dedicated concrete plants covered by this permit andthe best management practices to address pollutants in these storm waterdischarges;

k. A copy of the permit requirements (attaching a copy of this permit isacceptable);

l. A cover page or title identifying the name and location of the site, the nameand contact information of all construction site operators, the name andcontact information for the person responsible for authorizing and amendingthe SWP3, preparation date, and the estimated dates that construction willstart and be complete;

m. A log documenting grading and stabilization activities as well as amendmentsto the SWP3, which occur after construction activities commence; and

n. Site map showing:


Part III.G.1.n

i. Limits of earth-disturbing activity of the site including associated off-siteborrow or spoil areas that are not addressed by a separate NOI andassociated SWP3;

ii. Soils types should be depicted for all areas of the site, including locations

of unstable or highly erodible soils;

iii. Existing and proposed contours. A delineation of drainage watershedsexpected during and after major grading activities as well as the size ofeach drainage watershed, in acres;

iv. Surface water locations including springs, wetlands, streams, lakes,water wells, etc., on or within 200 feet of the site, including theboundaries of wetlands or stream channels and first subsequent namedreceiving water(s) the permittee intends to fill or relocate for which thepermittee is seeking approval from the Army Corps of Engineers and/orOhio EPA;

v. Existing and planned locations of buildings, roads, parking facilities andutilities;

vi. The location of all erosion and sediment control practices, including thelocation of areas likely to require temporary stabilization during thecourse of site development;

vii. Sediment and storm water management basins noting their sedimentsettling volume and contributing drainage area;

viii. Permanent storm water management practices to be used to controlpollutants in storm water after construction operations have beencompleted.

ix. Areas designated for the storage or disposal of solid, sanitary and toxicwastes, including dumpster areas, areas designated for cement truckwashout, and vehicle fueling;

x. The location of designated construction entrances where the vehicles willaccess the construction site;

xi. The location of any in-stream activities including stream crossings;


Part III.G

2. Controls. The SWP3 must contain a description of the controls appropriate foreach construction operation covered by this permit and the operator(s) mustimplement such controls. The SWP3 must clearly describe for each majorconstruction activity identified in Part III.G.1.g: (a) appropriate control measuresand the general timing (or sequence) during the construction process that themeasures will be implemented; and (b) which contractor is responsible forimplementation (e.g., contractor A will clear land and install perimeter controls andcontractor B will maintain perimeter controls until final stabilization). The SWP3shall identify the subcontactors engaged in activities that could impact storm waterrunoff. The SWP3 shall contain signatures from all of the identified subcontractorsindicating that they have been informed and understand their roles andresponsibilities in complying with the SWP3. Ohio EPA recommends that theprimary site operator review the SWP3 with the primary contractor prior tocommencement of construction activities and keep a SWP3 training log todemonstrate that this review has occurred.

Ohio EPA recommends that the erosion, sediment, and storm water managementpractices used to satisfy the conditions of this permit should meet the standardsand specifications in the current edition of Ohio’s Rainwater and LandDevelopment (see definitions) manual or other standards acceptable to Ohio EPA.The controls shall include the following minimum components:

a. Non-Structural Preservation Methods. The SWP3 must make use ofpractices which preserve the existing natural condition as much as feasible.Such practices may include: preserving riparian areas adjacent to surfacewaters of the State, preserving existing vegetation and vegetative bufferstrips, phasing of construction operations in order to minimize the amount ofdisturbed land at any one time and designation of tree preservation areas orother protective clearing or grubbing practices. The recommended buffer thatoperators should leave undisturbed along a surface water of the State is 25feet as measured from the ordinary high water mark of the surface water.

b. Erosion Control Practices. The SWP3 must make use of erosion controlsthat are capable of providing cover over disturbed soils unless an exceptionis approved in accordance with Part III.G.4. A description of control practicesdesigned to restabilize disturbed areas after grading or construction shall beincluded in the SWP3. The SWP3 must provide specifications for stabilizationof all disturbed areas of the site and provide guidance as to which method ofstabilization will be employed for any time of the year. Such practices mayinclude: temporary seeding, permanent seeding, mulching, matting, sodstabilization, vegetative buffer strips, phasing of construction operations, useof construction entrances and the use of alternative ground cover.


Part III.G.2.b

i. Stabilization. Disturbed areas must be stabilized as specified in thefollowing tables below. Permanent and temporary stabilization aredefined in Part VII.

Table 1: Permanent Stabilization

Area requiring permanent stabilization Time frame to apply erosion controls

Any areas that will lie dormant for oneyear or more

Within seven days of the most recentdisturbance

Any areas within 50 feet of a surfacewater of the State and at final grade

Within two days of reaching final grade

Any other areas at final grade Within seven days of reaching finalgrade within that area

Table 2: Temporary Stabilization

Area requiring temporary stabilization Time frame to apply erosion controls

Any disturbed areas within 50 feet of asurface water of the State and not at finalgrade

Within two days of the most recentdisturbance if the area will remain idlefor more than 21 days

For all construction activities, anydisturbed areas that will be dormant formore than 21 days but less than one year,and not within 50 feet of a surface waterof the State

Within seven days of the most recentdisturbance within the area

For residential subdivisions, disturbedareas must be stabilized at least sevendays prior to transfer of permit coveragefor the individual lot(s).

Disturbed areas that will be idle overwinter

Prior to the onset of winter weather

Where vegetative stabilization techniques may cause structural instability or are otherwiseunobtainable, alternative stabilization techniques must be employed.

ii. Permanent stabilization of conveyance channels. Operators shallundertake special measures to stabilize channels and outfalls andprevent erosive flows. Measures may include seeding, dormant seeding(as defined in the current edition of the Rainwater and LandDevelopment manual), mulching, erosion control matting, sodding,riprap, natural channel design with bioengineering techniques or rockcheck dams.


Part III.G.2

c. Runoff Control Practices. The SWP3 shall incorporate measures whichcontrol the flow of runoff from disturbed areas so as to prevent erosion fromoccurring. Such practices may include rock check dams, pipe slope drains,diversions to direct flow away from exposed soils and protective gradingpractices. These practices shall divert runoff away from disturbed areas andsteep slopes where practicable. Velocity dissipation devices shall be placedat discharge locations and along the length of any outfall channel to providenon-erosive flow velocity from the structure to a water course so that thenatural physical and biological characteristics and functions are maintainedand protected.

d. Sediment Control Practices. The plan shall include a description ofstructural practices that shall store runoff allowing sediments to settle and/ordivert flows away from exposed soils or otherwise limit runoff from exposedareas. Structural practices shall be used to control erosion and trap sedimentfrom a site remaining disturbed for more than 14 days. Such practices mayinclude, among others: sediment settling ponds, silt fences, earth diversiondikes or channels which direct runoff to a sediment settling pond and stormdrain inlet protection. All sediment control practices must be capable ofponding runoff in order to be considered functional. Earth diversion dikes orchannels alone are not considered a sediment control practice unless thoseare used in conjunction with a sediment settling pond.

The SWP3 must contain detail drawings for all structural practices.

i. Timing. Sediment control structures shall be functional throughout thecourse of earth disturbing activity. Sediment basins and perimetersediment barriers shall be implemented prior to grading and within sevendays from the start of grubbing. They shall continue to function until theup slope development area is restabilized. As construction progressesand the topography is altered, appropriate controls must be constructedor existing controls altered to address the changing drainage patterns.

ii. Sediment settling ponds. A sediment settling pond is required for any oneof the following conditions:• concentrated storm water runoff (e.g., storm sewer or ditch); • runoff from drainage areas, which exceed the design capacity of silt

fence or other sediment barriers; • runoff from drainage areas that exceed the design capacity of inlet

protection; or • runoff from common drainage locations with 10 or more acres of

disturbed land.


Part III.G.2.d.ii

The permittee may request approval from Ohio EPA to use alternativecontrols if the permittee can demonstrate the alternative controls areequivalent in effectiveness to a sediment settling pond.

The sediment settling pond volume consists of both a dewatering zoneand a sediment storage zone. The volume of the dewatering zone shallbe a minimum of 1800 cubic feet (ft3) per acre of drainage (67 yd3/acre)with a minimum 48-hour drain time for sediment basins serving adrainage area over 5 acres. The volume of the sediment storage zoneshall be calculated by one of the following methods: Method 1: Thevolume of the sediment storage zone shall be 1000 ft3 per disturbed acrewithin the watershed of the basin. OR Method 2: The volume of thesediment storage zone shall be the volume necessary to store thesediment as calculated with RUSLE or a similar generally acceptederosion prediction model. The accumulated sediment shall be removedfrom the sediment storage zone once it’s full. When determining the totalcontributing drainage area, off-site areas and areas which remainundisturbed by construction activity must be included unless runoff fromthese areas is diverted away from the sediment settling pond and is notco-mingled with sediment-laden runoff. The depth of the dewatering zonemust be less than or equal to five feet. The configuration between inletsand the outlet of the basin must provide at least two units of length foreach one unit of width (> 2:1 length:width ratio), however, a length towidth ratio of 4:1 is recommended. When designing sediment settlingponds, the permittee must consider public safety, especially as it relatesto children, as a design factor for the sediment basin and alternativesediment controls must be used where site limitations would preclude asafe design. The use of a combination of sediment and erosion controlmeasures in order to achieve maximum pollutant removal is encouraged.

iii. Silt Fence and Diversions. Sheet flow runoff from denuded areas shallbe intercepted by silt fence or diversions to protect adjacent propertiesand water resources from sediment transported via sheet flow. Whereintended to provide sediment control, silt fence shall be placed on a levelcontour downslope of the disturbed area. This permit does not precludethe use of other sediment barriers designed to control sheet flow runoff.The relationship between the maximum drainage area to silt fence for aparticular slope range is shown in the table below.


Part III.G.2.d.iii

Maximum drainage area(in acres) to 100 linearfeet of silt fence

Range of slope for a particulardrainage area (in percent)

0.5 < 2%

0.25 > 2% but < 20%

0.125 > 20% but < 50%

Placing silt fence in a parallel series does not extend the size of thedrainage area. Storm water diversion practices shall be used to keeprunoff away from disturbed areas and steep slopes where practicable.Such devices, which include swales, dikes or berms, may receive stormwater runoff from areas up to 10 acres.

iv. Inlet Protection. Other erosion and sediment control practices shallminimize sediment laden water entering active storm drain systems,unless the storm drain system drains to a sediment settling pond. Allinlets receiving runoff from drainage areas of one or more acres willrequire a sediment settling pond.

v. Surface Waters of the State Protection. If construction activities disturbareas adjacent to surface waters of the State, structural practices shall bedesigned and implemented on site to protect all adjacent surface watersof the State from the impacts of sediment runoff. No structural sedimentcontrols (e.g., the installation of silt fence or a sediment settling pond)shall be used in a surface water of the State. For all constructionactivities immediately adjacent to surface waters of the State, it isrecommended that a setback of at least 25-feet, as measured from theordinary high water mark of the surface water, be maintained in its naturalstate as a permanent buffer. Where impacts within this setback area areunavoidable due to the nature of the construction activity (e.g., streamcrossings for roads or utilities), the project shall be designed such that thenumber of stream crossings and the width of the disturbance within thesetback area are minimized.

vi. Modifying Controls. If periodic inspections or other information indicatesa control has been used inappropriately or incorrectly, the permittee mustreplace or modify the control for site conditions.


Part III.G.2

e. Post-Construction Storm Water Management Requirements. So that thereceiving stream’s physical, chemical, and biological characteristics areprotected and stream functions are maintained, post-construction storm waterpractices shall provide perpetual management of runoff quality and quantity.To meet the post-construction requirements of this permit, the SWP3 mustcontain a description of the post-construction BMPs that will be installedduring construction for the site and the rationale for their selection. Therationale must address the anticipated impacts on the channel and floodplainmorphology, hydrology, and water quality. Post-construction BMPs cannotbe installed within a surface water of the State (e.g., wetland or stream)unless it’s authorized by a CWA 401 water quality certification, CWA 404permit, or Ohio EPA non-jurisdictional wetland/stream program approval.Note: localities may have more stringent post-construction requirements.

Detail drawings and maintenance plans must be provided for all post-construction BMPs. Maintenance plans shall be provided by the permittee tothe post-construction operator of the site (including homeowner associations)upon completion of construction activities (prior to termination of permitcoverage). For sites located within a community with a regulated municipalseparate storm sewer system (MS4), the permittee, land owner, or otherentity with legal control of the property may be required to develop andimplement a maintenance plan to comply with the requirements of the MS4.Maintenance plans must ensure that pollutants collected within structuralpost-construction practices, be disposed of in accordance with local, state,and federal regulations. To ensure that storm water management systemsfunction as they were designed and constructed, the post constructionoperation and maintenance plan must be a stand-alone document, whichcontains: (1) a designated entity for storm water inspection and maintenanceresponsibilities; (2) the routine and non-routine maintenance tasks to beundertaken; (3) a schedule for inspection and maintenance; (4) anynecessary legally binding maintenance easements and agreements; and (5)a map showing all access and maintenance easements. Permittees are notresponsible under this permit for operation and maintenance of post-construction practices once coverage under this permit is terminated.

Post-construction storm water BMPs that discharge pollutants from pointsources once construction is completed, may in themselves, needauthorization under a separate NPDES permit (one example is storm waterdischarges from regulated industrial sites).


Part III.G.2.e

Construction activities that do not include the installation of any impervioussurface (e.g., soccer fields), abandoned mine land reclamation activitiesregulated by the Ohio Department of Natural Resources, stream and wetlandrestoration activities, and wetland mitigation activities are not required tocomply with the conditions of Part III.G.2.e of this permit. Linear constructionprojects, (e.g., pipeline or utility line installation), which do not result in theinstallation of additional impervious surface, are not required to comply withthe conditions of Part III.G.2.e of this permit. However, linear constructionprojects must be designed to minimize the number of stream crossings andthe width of disturbance and achieve final stabilization of the disturbed areaas defined in Part VII.H.1.

Large Construction Activities. For all large construction activities (involvingthe disturbance of five or more acres of land or will disturb less than fiveacres, but is a part of a larger common plan of development or sale which willdisturb five or more acres of land), the post construction BMP(s) chosen mustbe able to detain storm water runoff for protection of the stream channels,stream erosion control, and improved water quality. The BMP(s) chosenmust be compatible with site and soil conditions. Structural (designed) post-construction storm water treatment practices shall be incorporated into thepermanent drainage system for the site. The BMP(s) chosen must be sizedto treat the water quality volume (WQv) and ensure compliance with Ohio’sWater Quality Standards in OAC Chapter 3745-1. The WQv shall beequivalent to the volume of runoff from a 0.75-inch rainfall and shall bedetermined according to the following equation:

WQv = C * P * A / 12where:WQv = water quality volume in acre-feet

C = runoff coefficient appropriate for storms less than 1 inch(Either use the following formula: C = 0.858i3 - 0.78i2 + 0.774i + 0.04,where i = fraction of post-construction impervious surface or use Table 1)P = 0.75 inch precipitation depthA = area draining into the BMP in acres


Part III.G.2.e

Table 1Runoff Coefficients Based on the Type of Land Use

Land Use Runoff Coefficient

Industrial & Commercial 0.8

High Density Residential (>8 dwellings/acre) 0.5

Medium Density Residential (4 to 8 dwellings/acre) 0.4

Low Density Residential (<4 dwellings/acre) 0.3

Open Space and Recreational Areas 0.2

Where the land use will be mixed, the runoff coefficient should be calculated using a weightedaverage. For example, if 60% of the contributing drainage area to the storm water treatmentstructure is Low Density Residential, 30% is High Density Residential, and 10% is OpenSpace, the runoff coefficient is calculated as follows (0.6)(0.3) + (0.3)(0.5) + (0.1)(0.2) = 0.35.

An additional volume equal to 20 percent of the WQv shall be incorporatedinto the BMP for sediment storage. Ohio EPA recommends that BMPs bedesigned according to the methodology included in the Rainwater and LandDevelopment manual or in another design manual acceptable for use by OhioEPA.

The BMPs listed in Table 2 below shall be considered standard BMPsapproved for general use. However communities with a regulated MS4 maylimit the use of some of these BMPs. BMPs shall be designed such that thedrain time is long enough to provide treatment, but short enough to providestorage for successive rainfall events and avoid the creation of nuisanceconditions. The outlet structure for the post-construction BMP must notdischarge more than the first half of the WQv or extended detention volume(EDv) in less than one-third of the drain time. The EDv is the volume of stormwater runoff that must be detained by a structural post-construction BMP.The EDv is equal to 75 percent of the WQv for wet extended detentionbasins, but is equal to the WQv for all other BMPs listed in Table 2.


Part III.G.2.e

Table 2Structural Post-Construction BMPs & Associated Drain (Drawdown) Times

Best Management Practice Drain Time of WQv

Infiltration Basin^ 24 - 48 hours

Enhanced Water Quality Swale 24 hours

Dry Extended Detention Basin* 48 hours

Wet Extended Detention Basin** 24 hours

Constructed Wetland (above permanent pool)+ 24 hours

Sand & Other Media Filtration 40 hours

Bioretention Cell^ 40 hours

Pocket Wetland# 24 hours

Vegetated Filter Strip 24 hours* Dry basins must include forebay and micropool each sized at 10% of the WQv** Provide both a permanent pool and an EDv above the permanent pool, each sized at 0.75* WQv+ Extended detention shall be provided for the full WQv above the permanent water pool.^ The WQv shall completely infiltrate within 48 hours so there is no standing or residual waterin the BMP.# Pocket wetlands must have a wet pool equal to the WQv, with 25% of the WQv in a pool and75% in marshes. The EDv above the permanent pool must be equal to the WQv.

The permittee may request approval from Ohio EPA to use alternative post-construction BMPs if the permittee can demonstrate that the alternative BMPsare equivalent in effectiveness to those listed in Table 2 above. Constructionactivities shall be exempt from this condition if it can be demonstrated that theWQv is provided within an existing structural post-construction BMP that ispart of a larger common plan of development or if structural post-constructionBMPs are addressed in a regional or local storm water management plan. Amunicipally operated regional storm water BMP can be used as a post-construction BMP provided that the BMP can detain the WQv from its entiredrainage area and release it over a 24 hour period.

Transportation Projects The construction of new roads and roadwayimprovement projects by public entities (i.e., the state, counties, townships,cities, or villages) may implement post-construction BMPs in compliance withthe current version (as of the effective date of this permit) of the OhioDepartment of Transportation’s “Location and Design Manual, Volume TwoDrainage Design” that has been accepted by Ohio EPA as an alternative tothe conditions of this permit.


Part III.G.2.e

Offsite Mitigation of Post-Construction Ohio EPA may authorize the offsitemitigation of the post-construction requirements of Part III.G.2.e of this permiton a case by case basis provided the permittee clearly demonstrates theBMPs listed in Table 2 are not feasible and the following criteria is met: (1) amaintenance agreement or policy is established to ensure operations andtreatment in perpetuity; (2) the offsite location discharges to the same HUC-14 watershed unit; and (3) the mitigation ratio of the WQv is 1.5 to 1 or theWQv at the point of retrofit, whichever is greater. Requests for offsitemitigation must be received prior to receipt of the NOI applications.

Redevelopment Projects Sites that have been previously developed whereno post-construction BMPs were installed shall either ensure a 20 percent netreduction of the site impervious area, provide for treatment of at least 20percent of the WQv, or a combination of the two. A one-for-one credit towardsthe 20 percent net reduction of impervious area can be obtained through theuse of pervious pavement and/or green roofs. Where projects are acombination of new development and redevelopment, the total WQv that mustbe treated shall be calculated by a weighted average based on acreage, withthe new development at 100 percent WQv and redevelopment at 20 percentWQv.

Non-Structural Post-Construction BMPs The size of the structural post-construction can be reduced by incorporating non-structural post-constructionBMPs into the design. Practices such as preserving open space will reducethe runoff coefficient and, thus, the WQv. Ohio EPA encourages theimplementation of riparian and wetland setbacks. Practices which reducestorm water runoff include permeable pavements, green roofs, rain barrels,conservation development, smart growth, low-impact development, and othersite design techniques contained in the Ohio Lake Commission’s BalancedGrowth Program (see www.glc.org/landuse/ohroundtable/ohiobgi.html). Inorder to promote the implementation of such practices, the Director mayconsider the use of non-structural practices to demonstrate compliance withPart III.G.2.e of this permit for areas of the site not draining into a commondrainage system of the site, i.e., sheet flow from perimeter areas such as therear yards of residential lots, for low density development scenarios, or wherethe permittee can demonstrate that the intent of pollutant removal and streamprotection, as required in Part III.G.2.e of this permit is being addressedthrough non-structural post-construction BMPs based upon review andapproval by Ohio EPA.

http://www.glc.org/landuse/ohroundtable/ohiobgi.html


Part III.G.2.e

Use of Alternative Post-Construction BMPs This permit does not precludethe use of innovative or experimental post-construction storm watermanagement technologies. However, the Director may require thesepractices to be tested using the protocol outlined in the TechnologyAcceptance Reciprocity Partnership’s (TARP) Protocol for Stormwater BestM a n a g e m e n t P r a c t i c e D e m o n s t r a t i o n s ( s e ehttp://www.dep.state.pa.us/dep/deputate/pollprev/techservices/tarp).

The Director may require discharges from such structures to be monitored toensure compliance with Part III.G.2.e of this permit. Permittees must requestapproval from Ohio EPA to use alternative post-construction BMPs if thepermittee can demonstrate that the alternative BMPs are equivalent ineffectiveness to those listed in Table 2 above. To demonstrate thisequivalency, the permittee must show that the alternative BMP has aminimum total suspended solids (TSS) removal efficiency of 80 percent.Also, the WQv discharge rate from the practice must be reduced to preventstream bed erosion and protect the physical and biological stream integrityunless there will be negligible hydrological impact to the receiving surfacewater of the State. The discharges will have a negligible impact if thepermittee can demonstrate that one of the following four conditions exist:

i. The entire WQv is recharged to groundwater;

ii. The larger common plan of development or sale will create less than oneacre of impervious surface;

iii. The project is a redevelopment project within an ultra-urban setting (i.e.,a downtown area or on a site where 100 percent of the project area isalready impervious surface and the storm water discharge is directed intoan existing storm sewer system); or

iv. The storm water drainage system of the development discharges directlyinto a large river (fourth order or greater) or to a lake and where thedevelopment area is less than 5 percent of the watershed area upstreamof the development site, unless a TMDL identified water quality problemsin the receiving surface waters of the State.


Part III.G.2.e

The Director shall only consider the use of alternative BMPs on projectswhere the permittee can demonstrate that the implementation of the BMPslisted in Table 2 is infeasible due to physical site constraints that prevent theability to provide functional BMP design. Alternative practices may include,but are not limited to, underground detention structures, vegetated swalesand vegetated filter strips designed using water quality flow, naturaldepressions, rain barrels, permeable pavements green roofs, rain gardens,catch basin inserts, and hydrodynamics separators. The Director may alsoconsider non-structural post-construction approaches where no localrequirement for such practices exist.

Small Construction Activities. For all small land disturbance activities (whichdisturb one or more, but less than five acres of land and is not a part of alarger common plan of development or sale which will disturb five or moreacres of land), a description of measures that will be installed during theconstruction process to control pollutants in storm water discharges that willoccur after construction operations have been completed must be includedin the SWP3. Structural measures should be placed on upland soils to thedegree attainable. Such practices may include, but are not limited to: stormwater detention structures (including wet basins); storm water retentionstructures; flow attenuation by use of open vegetated swales and naturaldepressions; infiltration of runoff onsite; and sequential systems (whichcombine several practices). The SWP3 shall include an explanation of thetechnical basis used to select the practices to control pollution where flowsexceed pre-development levels.

f. Surface Water Protection. If the project site contains any streams, rivers,lakes, wetlands or other surface waters, certain construction activities at thesite may be regulated under the CWA and/or state non-jurisdictional streamand wetland requirements. Sections 404 and 401 of the Act regulate thedischarge of dredged or fill material into surface waters and the impacts ofsuch activities on water quality, respectively. Construction activities insurface waters which may be subject to CWA regulation and/or staterequirements include, but are not limited to: sewer line crossings, grading,backfilling or culverting streams, filling wetlands, road and utility lineconstruction, bridge installation and installation of flow control structures. Ifthe project contains streams, rivers, lakes or wetlands or possible wetlands,the permittee must contact the appropriate U.S. Army Corps of EngineersDistrict Office. (CAUTION: Any area of seasonally wet hydric soil is apotential wetland - please consult the Soil Survey and list of hydric soils foryour County, available at your county’s Soil and Water Conservation District.If you have any questions about Section 401 water quality certification,please contact the Ohio Environmental Protection Agency, Section 401Coordinator.)


Part III.G.2.f

U.S. Army Corps of Engineers (Section 404 regulation):Huntington, WV District (304) 399-5210 (Muskingum River, Hocking River,Scioto River, Little Miami River, and Great Miami River Basins)Buffalo, NY District (716) 879-4191 (Lake Erie Basin)Pittsburgh, PA District (412) 395-7154 (Mahoning River Basin)Louisville, KY District (502) 315-6733 (Ohio River)

Ohio EPA 401/404 and non-jurisdictional stream/wetland coordinator can becontacted at (614) 644-2001 (all of Ohio)

Concentrated storm water runoff from BMPs to natural wetlands shall beconverted to diffuse flow before the runoff enters the wetlands. The flowshould be released such that no erosion occurs downslope. Level spreadersmay need to be placed in series, particularly on steep sloped sites, to ensurenon-erosive velocities. Other structural BMPs may be used between stormwater features and natural wetlands, in order to protect the natural hydrology,hydroperiod, and wetland flora. If the applicant proposes to discharge tonatural wetlands, a hydrologic analysis shall be performed. The applicantshall attempt to match the pre-development hydroperiods and hydrodynamicsthat support the wetland. The applicant shall assess whether theirconstruction activity will adversely impact the hydrologic flora and fauna of thewetland. Practices such as vegetative buffers, infiltration basins, conservationof forest cover, and the preservation of intermittent streams, depressions, anddrainage corridors may be used to maintain wetland hydrology.

g. Other controls. The SWP3 must also provide BMPs for pollutant sourcesother than sediment. Non-sediment pollutant sources, which may be presenton a construction site, include paving operations, concrete washout, structurepainting, structure cleaning, demolition debris disposal, drilling and blastingoperations, material storage, slag, solid waste, hazardous waste,contaminated soils, sanitary and septic wastes, vehicle fueling andmaintenance activities, and landscaping operations.

i. Non-Sediment Pollutant Controls. No solid or liquid waste, includingbuilding materials, shall be discharged in storm water runoff. Thepermittee must implement all necessary BMPs to prevent the dischargeof non-sediment pollutants to the drainage system of the site or surfacewaters of the State. Under no circumstance shall concrete trucks washout directly into a drainage channel, storm sewer or surface waters of theState. No exposure of storm water to waste materials is recommended.

ii. Off-site traffic. Off-site vehicle tracking of sediments and dustgeneration shall be minimized.


Part III.G.2.g

iii. Compliance with other requirements. The SWP3 shall be consistentwith applicable State and/or local waste disposal, sanitary sewer or septicsystem regulations, including provisions prohibiting waste disposal byopen burning and shall provide for the proper disposal of contaminatedsoils to the extent these are located within the permitted area.

iv. Trench and ground water control. There shall be no turbid dischargesto surface waters of the State resulting from dewatering activities. Iftrench or ground water contains sediment, it must pass through asediment settling pond or other equally effective sediment control device,prior to being discharged from the construction site. Alternatively,sediment may be removed by settling in place or by dewatering into asump pit, filter bag or comparable practice. Ground water dewateringwhich does not contain sediment or other pollutants is not required to betreated prior to discharge. However, care must be taken whendischarging ground water to ensure that it does not become pollutant-laden by traversing over disturbed soils or other pollutant sources.

v. Contaminated Sediment. Where construction activities are to occur onsites with contamination from previous activities, operators must be awarethat concentrations of materials that meet other criteria (is not considereda Hazardous Waste, meeting VAP standards, etc.) may still result instorm water discharges in excess of Ohio Water Quality Standards. Suchdischarges are not authorized by this permit. Appropriate BMPs include,but are not limited to:• The use of berms, trenches, and pits to collect contaminated runoff

and prevent discharges;• Pumping runoff into a sanitary sewer (with prior approval of the

sanitary sewer operator) or into a container for transport to anappropriate treatment/disposal facility; and

• Covering areas of contamination with tarps or other methods thatprevent storm water from coming into contact with the material.

Operators should consult with Ohio EPA Division of Surface Water priorto seeking permit coverage.

h. Maintenance. All temporary and permanent control practices shall bemaintained and repaired as needed to ensure continued performance of theirintended function. All sediment control practices must be maintained in afunctional condition until all up slope areas they control are permanentlystabilized. The SWP3 shall be designed to minimize maintenancerequirements. The applicant shall provide a description of maintenanceprocedures needed to ensure the continued performance of control practices.


Part III.G.2

i. Inspections. At a minimum, procedures in an SWP3 shall provide that allcontrols on the site are inspected at least once every seven calendar daysand within 24 hours after any storm event greater than one-half inch of rainper 24 hour period. The inspection frequency may be reduced to at leastonce every month if the entire site is temporarily stabilized or runoff is unlikelydue to weather conditions (e.g., site is covered with snow, ice, or the groundis frozen). A waiver of inspection requirements is available until one monthbefore thawing conditions are expected to result in a discharge if all of thefollowing conditions are met: the project is located in an area where frozenconditions are anticipated to continue for extended periods of time (i.e., morethan one month); land disturbance activities have been suspended; and thebeginning and ending dates of the waiver period are documented in theSWP3. Once a definable area has been finally stabilized, you may mark thison your SWP3 and no further inspection requirements apply to that portion ofthe site. The permittee shall assign “qualified inspection personnel” toconduct these inspections to ensure that the control practices are functionaland to evaluate whether the SWP3 is adequate and properly implemented inaccordance with the schedule proposed in Part III.G.1.g of this permit orwhether additional control measures are required.

Following each inspection, a checklist must be completed and signed by thequalified inspection personnel representative. At a minimum, the inspectionreport must include:i. the inspection date; ii. names, titles, and qualifications of personnel making the inspection; iii. weather information for the period since the last inspection (or since

commencement of construction activity if the first inspection) including abest estimate of the beginning of each storm event, duration of eachstorm event, approximate amount of rainfall for each storm event (ininches), and whether any discharges occurred;

iv. weather information and a description of any discharges occurring at thetime of the inspection;

v. location(s) of discharges of sediment or other pollutants from the site;vi. location(s) of BMPs that need to be maintained;vii. location(s) of BMPs that failed to operate as designed or proved

inadequate for a particular location;viii. location(s) where additional BMPs are needed that did not exist at the

time of inspection; andix. corrective action required including any changes to the SWP3 necessary

and implementation dates.


Part III.G.2.i

Disturbed areas and areas used for storage of materials that are exposed toprecipitation shall be inspected for evidence of or the potential for pollutantsentering the drainage system. Erosion and sediment control measuresidentified in the SWP3 shall be observed to ensure that those are operatingcorrectly. Discharge locations shall be inspected to ascertain whethererosion and sediment control measures are effective in preventing significantimpacts to the receiving waters. Locations where vehicles enter or exit thesite shall be inspected for evidence of off-site vehicle tracking.

The permittee shall maintain for three years following the submittal of a noticeof termination form, a record summarizing the results of the inspection,names(s) and qualifications of personnel making the inspection, the date(s)of the inspection, major observations relating to the implementation of theSWP3 and a certification as to whether the facility is in compliance with theSWP3 and the permit and identify any incidents of non-compliance. Therecord and certification shall be signed in accordance with Part V.G. of thispermit.

i. When practices require repair or maintenance. If the inspectionreveals that a control practice is in need of repair or maintenance, withthe exception of a sediment settling pond, it must be repaired ormaintained within three days of the inspection. Sediment settling pondsmust be repaired or maintained within 10 days of the inspection.

ii. When practices fail to provide their intended function. If theinspection reveals that a control practice fails to perform its intendedfunction and that another, more appropriate control practice is required,the SWP3 must be amended and the new control practice must beinstalled within 10 days of the inspection.

iii. When practices depicted on the SWP3 are not installed. If theinspection reveals that a control practice has not been implemented inaccordance with the schedule contained in Part III.G.1.g of this permit,the control practice must be implemented within 10 days from the date ofthe inspection. If the inspection reveals that the planned control practiceis not needed, the record must contain a statement of explanation as towhy the control practice is not needed.


Part III.G

3. Approved State or local plans. All dischargers regulated under this generalpermit must comply, except those exempted under state law, with the lawfulrequirements of municipalities, counties and other local agencies regardingdischarges of storm water from construction activities. All erosion and sedimentcontrol plans and storm water management plans approved by local officials shallbe retained with the SWP3 prepared in accordance with this permit. Applicablerequirements for erosion and sediment control and storm water managementapproved by local officials are, upon submittal of a NOI form, incorporated byreference and enforceable under this permit even if they are not specificallyincluded in an SWP3 required under this permit. When the project is locatedwithin the jurisdiction of a regulated municipal separate storm sewer system(MS4), the permittee must certify that the SWP3 complies with the requirementsof the storm water management program of the MS4 operator.

4. Exceptions. If specific site conditions prohibit the implementation of any of theerosion and sediment control practices contained in this permit or site specificconditions are such that implementation of any erosion and sediment controlpractices contained in this permit will result in no environmental benefit, then thepermittee shall provide justification for rejecting each practice based on siteconditions. Exceptions from implementing the erosion and sediment controlstandards contained in this permit will be approved or denied on a case-by-casebasis.

The permittee may request approval from Ohio EPA to use alternative methodsto satisfy conditions in this permit if the permittee can demonstrate that thealternative methods are sufficient to protect the overall integrity of receivingstreams and the watershed. Alternative methods will be approved or denied ona case-by-case basis.

PART IV. NOTICE OF TERMINATION REQUIREMENTS

A. Failure to notify.

The terms and conditions of this permit shall remain in effect until a signed Notice ofTermination (NOT) form is submitted. Failure to submit an NOT constitutes a violationof this permit and may affect the ability of the permittee to obtain general permitcoverage in the future.

B. When to submit an NOT

1. Permittees wishing to terminate coverage under this permit must submit an NOTform in accordance with Part V.G. of this permit. Compliance with this permit isrequired until an NOT form is submitted. The permittee’s authorization todischarge under this permit terminates at midnight of the day the NOT form is


Part IV.B

submitted. Prior to submitting the NOT form, the permittee shall conduct a siteinspection in accordance with Part III.G.2.i of this permit and have a maintenanceagreement is in place to ensure all post-construction BMPs will be maintained inperpetuity.

2. All permittees must submit an NOT form within 45 days of completing all permittedland disturbance activities. Enforcement actions may be taken if a permitteesubmits an NOT form without meeting one or more of the following conditions:

a. Final stabilization (see definition in Part VII) has been achieved on all portionsof the site for which the permittee is responsible (including, if applicable,returning agricultural land to its pre-construction agricultural use);

b. Another operator(s) has assumed control over all areas of the site that havenot been finally stabilized;

c. For residential construction only, temporary stabilization has been completedand the lot, which includes a home, has been transferred to the homeowner.(Note: individual lots without housing which are sold by the developer mustundergo final stabilization prior to termination of permit coverage.); or

d. An exception has been granted under Part III.G.4.

C. How to submit an NOT

Permittees must use Ohio EPA’s approved NOT form. The form must be completedand mailed according to the instructions and signed in accordance with Part V.G of thispermit.

PART V. STANDARD PERMIT CONDITIONS.

A. Duty to comply.

1. The permittee must comply with all conditions of this permit. Any permitnoncompliance constitutes a violation of ORC Chapter 6111. and is grounds forenforcement action.

2. Ohio law imposes penalties and fines for persons who knowingly make falsestatements or knowingly swear or affirm the truth of a false statement previouslymade.

B. Continuation of an expired general permit.

An expired general permit continues in force and effect until a new general permit isissued.


Part V

C. Need to halt or reduce activity not a defense.

It shall not be a defense for a permittee in an enforcement action that it would havebeen necessary to halt or reduce the permitted activity in order to maintain compliancewith the conditions of this permit.

D. Duty to mitigate.

The permittee shall take all reasonable steps to minimize or prevent any discharge inviolation of this permit which has a reasonable likelihood of adversely affecting humanhealth or the environment.

E. Duty to provide information.

The permittee shall furnish to the director, within 10 days of written request, anyinformation which the director may request to determine compliance with this permit.The permittee shall also furnish to the director upon request copies of records requiredto be kept by this permit.

F. Other information.

When the permittee becomes aware that he or she failed to submit any relevant factsor submitted incorrect information in the NOI, SWP3, NOT or in any other report to thedirector, he or she shall promptly submit such facts or information.

G. Signatory requirements.

All NOIs, NOTs, SWP3s, reports, certifications or information either submitted to thedirector or that this permit requires to be maintained by the permittee, shall be signed.

1. These items shall be signed as follows:

a. For a corporation: By a responsible corporate officer. For the purpose of thissection, a responsible corporate officer means:

i. A president, secretary, treasurer or vice-president of the corporation incharge of a principal business function or any other person who performssimilar policy or decision-making functions for the corporation; or


Part V.G.1.a

ii. The manager of one or more manufacturing, production or operatingfacilities, provided, the manager is authorized to make managementdecisions which govern the operation of the regulated facility includinghaving the explicit or implicit duty of making major capital investmentrecommendations and initiating and directing other comprehensivemeasures to assure long-term environmental compliance withenvironmental laws and regulations; the manager can ensure that thenecessary systems are established or actions taken to gather completeand accurate information for permit application requirements; and whereauthority to sign documents has been assigned or delegated to themanager in accordance with corporate procedures;

b. For a partnership or sole proprietorship: By a general partner or theproprietor, respectively; or

c. For a municipality, State, Federal or other public agency: By either a principalexecutive officer or ranking elected official. For purposes of this section, aprincipal executive officer of a Federal agency includes (1) the chief executiveofficer of the agency or (2) a senior executive officer having responsibility forthe overall operations of a principal geographic unit of the agency (e.g.,Regional Administrators of U.S. EPA).

2. All reports required by the permits and other information requested by the directorshall be signed by a person described in Part V.G.1 of this permit or by a dulyauthorized representative of that person. A person is a duly authorizedrepresentative only if:

a. The authorization is made in writing by a person described in Part V.G.1 ofthis permit and submitted to the director;

b. The authorization specifies either an individual or a position havingresponsibility for the overall operation of the regulated facility or activity, suchas the position of manager, operator of a well or well field, superintendent,position of equivalent responsibility or an individual or position having overallresponsibility for environmental matters for the company. (A duly authorizedrepresentative may thus be either a named individual or any individualoccupying a named position); and

c. The written authorization is submitted to the director.


Part V.G

3. Changes to authorization. If an authorization under Part V.G.2 of this permit is nolonger accurate because a different individual or position has responsibility for theoverall operation of the facility, a new authorization satisfying the requirements ofPart V.G.2 of this permit must be submitted to the director prior to or together withany reports, information or applications to be signed by an authorizedrepresentative.

H. Certification.

Any person signing documents under this section shall make the following certification:

"I certify under penalty of law that this document and all attachments wereprepared under my direction or supervision in accordance with a systemdesigned to assure that qualified personnel properly gathered andevaluated the information submitted. Based on my inquiry of the personor persons who manage the system or those persons directly responsiblefor gathering the information, the information submitted is, to the best ofmy knowledge and belief, true, accurate and complete. I am aware thatthere are significant penalties for submitting false information, includingthe possibility of fine and imprisonment for knowing violations."

I. Oil and hazardous substance liability.

Nothing in this permit shall be construed to preclude the institution of any legal actionor relieve the permittee from any responsibilities, liabilities or penalties to which thepermittee is or may be subject under section 311 of the CWA or 40 CFR Part 112. 40CFR Part 112 establishes procedures, methods and equipment and other requirementsfor equipment to prevent the discharge of oil from non-transportation-related onshoreand offshore facilities into or upon the navigable surface waters of the State oradjoining shorelines.

J. Property rights.

The issuance of this permit does not convey any property rights of any sort, nor anyexclusive privileges, nor does it authorize any injury to private property nor anyinvasion of personal rights, nor any infringement of Federal, State or local laws orregulations.

K. Severability.

The provisions of this permit are severable and if any provision of this permit or theapplication of any provision of this permit to any circumstance, is held invalid, theapplication of such provision to other circumstances and the remainder of this permitshall not be affected thereby.


Part V

L. Transfers.

Ohio NPDES general permit coverage is transferable. Ohio EPA must be notified inwriting sixty days prior to any proposed transfer of coverage under an Ohio NPDESgeneral permit. The transferee must inform Ohio EPA it will assume the responsibilitiesof the original permittee transferor.

M. Environmental laws.

No condition of this permit shall release the permittee from any responsibility orrequirements under other environmental statutes or regulations.

N. Proper operation and maintenance.

The permittee shall at all times properly operate and maintain all facilities and systemsof treatment and control (and related appurtenances) which are installed or used by thepermittee to achieve compliance with the conditions of this permit and with therequirements of SWP3s. Proper operation and maintenance requires the operationof backup or auxiliary facilities or similar systems, installed by a permittee only whennecessary to achieve compliance with the conditions of the permit.

O. Inspection and entry.

The permittee shall allow the director or an authorized representative of Ohio EPA,upon the presentation of credentials and other documents as may be required by law,to:

1. Enter upon the permittee's premises where a regulated facility or activity is locatedor conducted or where records must be kept under the conditions of this permit;

2. Have access to and copy at reasonable times, any records that must be keptunder the conditions of this permit; and

3. Inspect at reasonable times any facilities or equipment (including monitoring andcontrol equipment).

PART VI. REOPENER CLAUSE

A. If there is evidence indicating potential or realized impacts on water quality due to anystorm water discharge associated with construction activity covered by this permit, thepermittee of such discharge may be required to obtain coverage under an individualpermit or an alternative general permit in accordance with Part I.C of this permit or thepermit may be modified to include different limitations and/or requirements.

B. Permit modification or revocation will be conducted according to ORC Chapter 6111.


PART VII. DEFINITIONS

A. “Act” means Clean Water Act (formerly referred to as the Federal Water PollutionControl Act or Federal Water Pollution Control Act Amendments of 1972) Pub. L. 92-500, as amended Pub. L. 95-217, Pub. L. 95-576, Pub. L. 96-483, Pub. L. 97-117 andPub. L. 100-4, 33 U.S.C. 1251 et. seq.

B. “Best management practices (BMPs)” means schedules of activities, prohibitions ofpractices, maintenance procedures and other management practices (both structuraland non-structural) to prevent or reduce the pollution of surface waters of the State.BMP's also include treatment requirements, operating procedures and practices tocontrol plant and/or construction site runoff, spillage or leaks, sludge or waste disposalor drainage from raw material storage.

C. “Commencement of construction” means the initial disturbance of soils associated withclearing, grubbing, grading, placement of fill or excavating activities or otherconstruction activities.

D. “Concentrated storm water runoff” means any storm water runoff which flows througha drainage pipe, ditch, diversion or other discrete conveyance channel.

E. “Director” means the director of the Ohio Environmental Protection Agency.

F. “Discharge” means the addition of any pollutant to the surface waters of the State froma point source.

G. “Disturbance” means any clearing, grading, excavating, filling, or other alteration of landsurface where natural or man-made cover is destroyed in a manner that exposes theunderlying soils.

H. “Final stabilization” means that either:

1. All soil disturbing activities at the site are complete and a uniform perennialvegetative cover (e.g., evenly distributed, without large bare areas) with a densityof at least 70 percent cover for the area has been established on all unpavedareas and areas not covered by permanent structures or equivalent stabilizationmeasures (such as the use of landscape mulches, rip-rap, gabions or geotextiles)have been employed. In addition, all temporary erosion and sediment controlpractices are removed and disposed of and all trapped sediment is permanentlystabilized to prevent further erosion; or

2. For individual lots in residential construction by either:

a. The homebuilder completing final stabilization as specified above or


Part VII.H.2

b. The homebuilder establishing temporary stabilization including perimetercontrols for an individual lot prior to occupation of the home by thehomeowner and informing the homeowner of the need for and benefits of,final stabilization. (Homeowners typically have an incentive to put in thelandscaping functionally equivalent to final stabilization as quick as possibleto keep mud out of their homes and off sidewalks and driveways.); or

3. For construction projects on land used for agricultural purposes (e.g., pipelinesacross crop or range land), final stabilization may be accomplished by returningthe disturbed land to its pre-construction agricultural use. Areas disturbed thatwere previously used for agricultural activities, such as buffer strips immediatelyadjacent to surface waters of the State and which are not being returned to theirpre-construction agricultural use, must meet the final stabilization criteria in (1) or(2) above.

I. “Individual Lot NOI” means a Notice of Intent for an individual lot to be covered by thispermit (see parts I and II of this permit).

J. “Larger common plan of development or sale”- means a contiguous area wheremultiple separate and distinct construction activities may be taking place at differenttimes on different schedules under one plan.

K. “MS4" means municipal separate storm sewer system which means a conveyance orsystem of conveyances (including roads with drainage systems, municipal streets,catch basins, curbs, gutters, ditches, man-made channels or storm drains) that are:

1. Owned or operated by the federal government, state, municipality, township,county, district(s) or other public body (created by or pursuant to state or federallaw) including special district under state law such as a sewer district, flood controldistrict or drainage districts or similar entity or a designated and approvedmanagement agency under section 208 of the act that discharges into surfacewaters of the State; and

2. Designed or used for collecting or conveying solely storm water,

3. Which is not a combined sewer and

4. Which is not a part of a publicly owned treatment works.

L. “National Pollutant Discharge Elimination System (NPDES)” means the nationalprogram for issuing, modifying, revoking and reissuing, terminating, monitoring andenforcing permits and enforcing pretreatment requirements, under sections 307, 402,318 and 405 of the CWA. The term includes an "approved program."


Part VII

M. “NOI” means notice of intent to be covered by this permit.

N. “NOT” means notice of termination.

O. “Operator” means any party associated with a construction project that meets either ofthe following two criteria:

1. The party has operational control over construction plans and specifications,including the ability to make modifications to those plans and specifications; or

2. The party has day-to-day operational control of those activities at a project whichare necessary to ensure compliance with an SWP3 for the site or other permitconditions (e.g., they are authorized to direct workers at a site to carry outactivities required by the SWP3 or comply with other permit conditions).

As set forth in Part II.A, there can be more than one operator at a site and under thesecircumstances, the operators shall be co-permittees.

P. “Owner or operator” means the owner or operator of any “facility or activity” subject toregulation under the NPDES program.

Q. “Permanent stabilization” means the establishment of permanent vegetation, decorativelandscape mulching, matting, sod, rip rap and landscaping techniques to providepermanent erosion control on areas where construction operations are complete orwhere no further disturbance is expected for at least one year.

R. “Percent imperviousness” means the impervious area created divided by the total areaof the project site.

S. “Point source” means any discernible, confined and discrete conveyance, including butnot limited to, any pipe, ditch, channel, tunnel, conduit, well, discrete fissure, container,rolling stock, concentrated animal feeding operation, landfill leachate collection system,vessel or the floating craft from which pollutants are or may be discharged. This termdoes not include return flows from irrigated agriculture or agricultural storm waterrunoff.

T. “Qualified inspection personnel” means a person knowledgeable in the principles andpractice of erosion and sediment controls, who possesses the skills to assess allconditions at the construction site that could impact storm water quality and to assessthe effectiveness of any sediment and erosion control measures selected to control thequality of storm water discharges from the construction activity.


Part VII

U. “Rainwater and Land Development” is a manual describing construction and post-construction best management practices and associated specifications. A copy of themanual may be obtained by contacting the Ohio Department of Natural Resources,Division of Soil & Water Conservation.

V. “Riparian area” means the transition area between flowing water and terrestrial (land)ecosystems composed of trees, shrubs and surrounding vegetation which serve tostabilize erodible soil, improve both surface and ground water quality, increase streamshading and enhance wildlife habitat.

W. “Runoff coefficient” means the fraction of total rainfall that will appear at theconveyance as runoff.

X. “Sediment settling pond” means a sediment trap, sediment basin or permanent basinthat has been temporarily modified for sediment control, as described in the latestedition of the Rainwater and Land Development manual.

Y. “State isolated wetland permit requirements” means the requirements set forth inSections 6111.02 through 6111.029 of the ORC.

Z. “Storm water” means storm water runoff, snow melt and surface runoff and drainage.

AA. “Surface waters of the State” or “water bodies” means all streams, lakes,reservoirs, ponds, marshes, wetlands or other waterways which are situatedwholly or partially within the boundaries of the state, except those private waterswhich do not combine or effect a junction with natural surface or undergroundwaters. Waters defined as sewerage systems, treatment works or disposalsystems in Section 6111.01 of the ORC are not included.

BB. “SWP3” means storm water pollution prevention plan.

CC. “Temporary stabilization” means the establishment of temporary vegetation,mulching, geotextiles, sod, preservation of existing vegetation and othertechniques capable of quickly establishing cover over disturbed areas to provideerosion control between construction operations.

DD. “Water Quality Volume (WQv)” means the volume of storm water runoff which mustbe captured and treated prior to discharge from the developed site afterconstruction is complete. WQv is based on the expected runoff generated by themean storm precipitation volume from post-construction site conditions at whichrapidly diminishing returns in the number of runoff events captured begins tooccur.

Documents

The Ohio State University · The Ohio State University (OSU) was identified as being an owner/operator of a municipal separate storm sewer system (MS4) in 2001. ... This section deals