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Module 1 of 4, August 25, 2020
NJ DEP Division of Water Quality, Online Stormwater Management Design Review Course Page 1
Requirements and Tools Overview
Tim EbersbergerNJDEP Division of Water Quality
SWMDR Training Module 1August 25, 2020
1
MS4 StormwaterMapping
MS4 Permit Required Mapping
• Part IV.B.6.a of the Tier A MS4 permit requires municipalities to develop, update and maintain an outfall pipe mapo Submitted to the Department by January 1, 2019
o Submitted to the Department in an electronic format by December 21, 2020
o Acceptable electronic formats are submission through the ArcGIS Online application, ESRI Geodatabase files, ESRI Shapefiles, or AutoCAD files.
Tier A Municipalities:
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MS4 Permit Required Mapping
• Part IV.C.1.a.ii of the Tier A MS4 permit requires municipalities maintain a log including the location information of the facility inspected (location information must be specific enough to locate and identify the stormwater facility in the field; e.g. geographic coordinates
o Not submitted to the Department but will be subject to review during inspections and audits
Tier A Municipalities:
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Module 1 of 4, August 25, 2020
NJ DEP Division of Water Quality, Online Stormwater Management Design Review Course Page 2
MS4 Permit Required Mapping
• No outfall pipe mapping is currently required, however, Tier B municipalities are encouraged to maintain an outfall pipe map
Tier B Municipalities:
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MS4 Permit Required Mapping
• Part IV.B.6.a of the Public Complex permit requires public complexes to develop, update and maintain an outfall pipe mapo Submitted to the Department by January 1, 2020
o Submitted to the Department in an electronic format by December 21, 2020
o Acceptable electronic formats are submission through the ArcGIS Online application, ESRI Geodatabase files, ESRI Shapefiles, or AutoCAD files.
Public Complexes:
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MS4 Permit Required Mapping
• Part IV.C.1.a of the Public Complex permit requires public complexes to develop, update and maintain an inventory and map of the following;o Storm drain inletso Stormwater management basinso Subsurface infiltration/detention systemso Culvertso Manufactured treatment devices (MTDs)o Green Infrastructure
Public Complexes:
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Module 1 of 4, August 25, 2020
NJ DEP Division of Water Quality, Online Stormwater Management Design Review Course Page 3
MS4 Permit Required Mapping
• Part IV.C.1.a of the Public Complex permit requires public complexes to develop, update and maintain an inventory of all stormwater facilities;o Submitted to the Department by January 1, 2020
o Be populated and maintained in electronic format provided by the Department
o Acceptable electronic formats are submission through the ArcGIS Online application, ESRI Geodatabase files, ESRI Shapefiles, or AutoCAD files.
Public Complexes:
7
MS4 Permit Required Mapping
• Part IV.B.6.a of the Highway Agency permit requires highway agencies to develop, update and maintain an outfall pipe map
o Submitted to the Department in an electronic format by December 21, 2020
o Acceptable electronic formats are submission through the ArcGIS Online application, ESRI Geodatabase files, ESRI Shapefiles, or AutoCAD files.
Highway Agencies:
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MS4 Permit Required Mapping
• Part IV.C.1.a of the Highway Agency permit requires highway agencies to develop, update and maintain an inventory and map of the following;o Storm drain inletso Stormwater management basinso Subsurface infiltration/detention systemso Culvertso Manufactured treatment devices (MTDs)o Green Infrastructure
Highway Agencies:
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Module 1 of 4, August 25, 2020
NJ DEP Division of Water Quality, Online Stormwater Management Design Review Course Page 4
MS4 Permit Required Mapping
• Part IV.C.1.a of the Highway Agency permit requires highway agencies to develop, update and maintain an inventory of all stormwater facilities;
o Submitted to the Department by January 1, 2023
o Be populated and maintained in electronic format provided by the Department
o Acceptable electronic formats are submission through the ArcGIS Online application, ESRI Geodatabase files, ESRI Shapefiles, or AutoCAD files.
Highway Agencies:
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Requirements Aided By Mapping
Stream Scouring:
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Requirements Aided By Mapping
• Stream scouring is the erosion or removal of streambed or bank material by the physical action of flowing water and the sediment that it carries.
• Stream scouring can damage stream banks, outfall pipes, bridge abutments, and other physical structures in or adjacent to a water body.
Stream Scouring:
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Module 1 of 4, August 25, 2020
NJ DEP Division of Water Quality, Online Stormwater Management Design Review Course Page 5
Requirements Aided By Mapping
• Tier A Municipalities are required to inspect outfall pipes once every 5 years for stream scouring
• Public Complexes are required to inspect outfall pipes once per year for stream scouring
• Highway Agencies are required to inspect all outfalls once annually for stream scouring
Stream Scouring:
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Requirements Aided By Mapping
Illicit Discharge Detection and Elimination:
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Requirements Aided By Mapping
Illicit Discharge Detection and Elimination:
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• Any physical or non-physical connection that discharges non-stormwater to a municipal separate storm sewer system
o Sewage
o Non-contact cooling water, process wastewater, or other industrial waste
o Any discharge that the MS4 permittee identifies as a source or significant contributor of pollutants
Module 1 of 4, August 25, 2020
NJ DEP Division of Water Quality, Online Stormwater Management Design Review Course Page 6
Requirements Aided By Mapping
• Tier A Municipalities are required to inspect outfall pipes once every 5 years for illicit discharges
• Public Complexes are required to inspect outfall pipes once annually for illicit discharges
• Highway Agencies are required to inspect all outfalls once every 5 years for illicit discharges
Illicit Discharge Detection and Elimination:
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Requirements Aided By Mapping
Stormwater Facilities Maintenance:
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Requirements Aided By Mapping
Stormwater Facilities Maintenance:
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Module 1 of 4, August 25, 2020
NJ DEP Division of Water Quality, Online Stormwater Management Design Review Course Page 7
Requirements Aided By Mapping
• All MS4 permittees are required to develop, update, and implement a program to ensure the adequate long-term cleaning, operation, and maintenance of all permittee owned or operated stormwater facilities
• Municipalities are required to ensure the adequate long-term cleaning, operation, and maintenance of all stormwater facilities not owned or operated by the municipality but located within its borders
Stormwater Facilities Maintenance:
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NJDEP Mapping & Inventory Assistance
• NJDEP created a geodatabase template and associated data dictionary for the 7 stormwater infrastructure features required to be mapped/inventoried by MS4 permittees
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NJDEP Mapping & Inventory Assistance
Outfall Pipes Stormwater Management Basins
Subsurface Infiltration/ Detention
Manufactured Treatment Devices
Green Infrastructure Storm Drain Inlets
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Module 1 of 4, August 25, 2020
NJ DEP Division of Water Quality, Online Stormwater Management Design Review Course Page 8
NJDEP Mapping & Inventory Assistance
• NJDEP created a geodatabase template and associated data dictionary for the 7 stormwater infrastructure features required to be mapped/inventoried by MS4 permittees
• The geodatabase template had to be made available over a number of different collection methodologies to suit the needs of all permittees
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NJDEP Mapping & Inventory Assistance:ArcGIS Online Tool
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NJDEP Mapping & Inventory Assistance:Collector App
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Module 1 of 4, August 25, 2020
NJ DEP Division of Water Quality, Online Stormwater Management Design Review Course Page 9
NJDEP Mapping & Inventory Assistance:Dropdown Menus
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NJDEP Mapping & Inventory Assistance:Handheld GPS Units
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NJDEP Mapping & Inventory Assistance:ESRI Geodatabase
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Module 1 of 4, August 25, 2020
NJ DEP Division of Water Quality, Online Stormwater Management Design Review Course Page 10
NJDEP Mapping & Inventory Assistance:Excel Spreadsheet
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NJDEP Mapping & Inventory Assistance
• NJDEP created a database and data dictionary for the 7 stormwater infrastructure features required to be mapped/inventoried by MS4 permittees
• The data dictionary had to be made available over a number of different collection methodologies to suit the needs of all permittees
• Existing data can be made available upon request
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NJDEP Mapping & Inventory Assistance:Existing Outfall Pipes
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Module 1 of 4, August 25, 2020
NJ DEP Division of Water Quality, Online Stormwater Management Design Review Course Page 11
NJDEP Mapping & Inventory Assistance:H&H Database
31https://hydro.rutgers.edu/
NJDEP Mapping & Inventory Assistance
• NJDEP created a database and data dictionary for the 7 stormwater infrastructure features required to be mapped/inventoried by MS4 permittees
• The data dictionary had to be made available over a number of different collection methodologies to suit the needs of all permittees
• Existing data can be made available upon request• Training and assistance is available
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More Information
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Tim EbersbergerNJDEP – Bureau of Nonpoint Pollution Control
Timothy.Ebersberger@dep.nj.gov609-633-7021
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