HYDINFRA HYDINFRA -- -- Mn/DOT’s Mn/DOT’s Hydraulic Infrastructure DatabaseHydraulic Infrastructure Database

andand

Illicit Discharge InspectionIllicit Discharge Inspection

Bonnie Peterson,Bonnie Peterson,

HYDINFRA CoordinatorHYDINFRA Coordinator

Mn/DOT Bridge Hydraulics Mn/DOT Bridge Hydraulics

HYDINFRAHYDINFRA is Mn/DOT’s is Mn/DOT’s

HydHydraulic raulic InfraInfrastructure Databasestructure Database

HYDINFRAHYDINFRA’s Purpose:’s Purpose:Manage information about storm drainage Manage information about storm drainage

system components, including:system components, including:

PipesPipes

Hydraulic StructuresHydraulic Structures

Special Hydraulic StructuresSpecial Hydraulic Structures

PondsPonds

Structural Pollution Control Devices (SPCDs)Structural Pollution Control Devices (SPCDs)

DitchesDitches

OutfallsOutfalls

Illicit DischargeIllicit Discharge

MS4 changes to HYDINFRA:MS4 changes to HYDINFRA:

Ponds, SPCDs and DitchesPonds, SPCDs and Ditches

Outfalls and Outfalls and Illicit Discharge InspectionIllicit Discharge Inspection

Inputs for Mn/DOT’sInputs for Mn/DOT’sIllicit Discharge Data Development:Illicit Discharge Data Development:

AMEC/Bonestroo’s Illicit Discharge Data AMEC/Bonestroo’s Illicit Discharge Data Form for Mn/DOT Metro’s MS4 PermitForm for Mn/DOT Metro’s MS4 Permit

CWP’s IDDE Guidance ManualCWP’s IDDE Guidance Manual

MS4 Permit, Page 9MS4 Permit, Page 9

MS4s must develop, implement and enforce a MS4s must develop, implement and enforce a program to detect and eliminate illicit dischargesprogram to detect and eliminate illicit discharges (with bmps and goals):(with bmps and goals):

With a storm sewer map that has:With a storm sewer map that has:– Ponds, streams, lakes, wetlands in our systemPonds, streams, lakes, wetlands in our system– SPCDs in our systemSPCDs in our system– All Pipes with 24” diameter at minimum but “all conveyances” is All Pipes with 24” diameter at minimum but “all conveyances” is

requested.requested.– Outfalls – outlets to others’ storm systems (not diffuse flow)Outfalls – outlets to others’ storm systems (not diffuse flow)

Prohibit non-stormwater discharges and enforceProhibit non-stormwater discharges and enforce..Program to “Program to “detect non-stormwater discharges including dumpingdetect non-stormwater discharges including dumping””Inform employees, business and public of hazards of improper waste Inform employees, business and public of hazards of improper waste disposal and illegal discharge.disposal and illegal discharge.(Other mostly clean waters sources are not included unless identified (Other mostly clean waters sources are not included unless identified as a problem. Residential car washing, street washing and fire-fighting as a problem. Residential car washing, street washing and fire-fighting water plus cleaner water sources aren’t included in illicit discharge.)water plus cleaner water sources aren’t included in illicit discharge.)

MS4 Permit Requirements for Illicit Discharge, pg 9 of permitMS4 Permit Requirements for Illicit Discharge, pg 9 of permit

Illicit DischargeIllicit Discharge

is a discharge or deposit of is a discharge or deposit of

polluting materials, liquid or solid, polluting materials, liquid or solid,

that can be transported to natural that can be transported to natural waterways.waterways.

How Mn/DOT is Inspecting for How Mn/DOT is Inspecting for Illicit DischargesIllicit Discharges

HYDINFRA InspectorsHYDINFRA Inspectors

Student WorkersStudent Workers

Maintenance PeopleMaintenance People

ConsultantsConsultants

Long-Term HYDINFRA Long-Term HYDINFRA

InspectorsInspectors

Illicit DischargesIllicit Discharges to Mn/DOT: to Mn/DOT:

Look for:Look for:– Unexpected pipes coming into the highway Unexpected pipes coming into the highway

storm drain system.storm drain system.

– Pipes flowing when storm drains shouldn’t Pipes flowing when storm drains shouldn’t be.be.

HYDINFRA can also record deposits of HYDINFRA can also record deposits of dumped or otherwise deposited polluting dumped or otherwise deposited polluting materials.materials.

Trimble GPS UnitsTrimble GPS Units

If Mn/DOT Inspectors find anIf Mn/DOT Inspectors find an Illicit DischargeIllicit Discharge::

Report it to Area Maintenance Supervisor Report it to Area Maintenance Supervisor within 24 hours for follow-up.within 24 hours for follow-up.

Accidental chemical spills by trucks are Accidental chemical spills by trucks are notnot reported as Illicit Discharge, but are logged reported as Illicit Discharge, but are logged by Dispatch and forwarded to MPCA Duty by Dispatch and forwarded to MPCA Duty Officer and cleaned up by trucking Officer and cleaned up by trucking company’s contractor. Mn/DOT company’s contractor. Mn/DOT Maintenance does emergency Maintenance does emergency containment.containment.

HYDINFRA HYDINFRA and and

Illicit Discharge Illicit Discharge Record KeepingRecord Keeping

Data Access Data Access MethodsMethodsHYDINFRA

Database

Oracle Server

Reports

ArcView GIS

Forms

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Illicit Illicit Discharge Discharge Data in Data in HYDINFRAHYDINFRA

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