HYDINFRA -- Mn/DOT

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HYDINFRA -- Mn/DOTs Hydraulic Infrastructure
DatabaseandIllicit Discharge Inspection

• Bonnie Peterson,
• HYDINFRA Coordinator
• Mn/DOT Bridge Hydraulics

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HYDINFRA is Mn/DOTs Hydraulic Infrastructure
Database
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HYDINFRAs Purpose

• Manage information about storm drainage system
  components, including
• Pipes
• Hydraulic Structures
• Special Hydraulic Structures
• Ponds
• Structural Pollution Control Devices (SPCDs)
• Ditches
• Outfalls
• Illicit Discharge

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MS4 changes to HYDINFRA

• Ponds, SPCDs and Ditches
• Outfalls and Illicit Discharge Inspection

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Inputs for Mn/DOTsIllicit Discharge Data
Development

• AMEC/Bonestroos Illicit Discharge Data Form for
  Mn/DOT Metros MS4 Permit
• CWPs IDDE Guidance Manual
• MS4 Permit, Page 9

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

• With a storm sewer map that has
• Ponds, streams, lakes, wetlands in our system
• SPCDs in our system
• All Pipes with 24 diameter at minimum but all
  conveyances is requested.
• Outfalls outlets to others storm systems (not
  diffuse flow)
• Prohibit non-stormwater discharges and enforce.
• Program to detect non-stormwater discharges
  including dumping
• Inform employees, business and public of hazards
  of improper waste disposal and illegal discharge.
• (Other mostly clean waters sources are not
  included unless identified as a problem.
  Residential car washing, street washing and
  fire-fighting water plus cleaner water sources
  arent included in illicit discharge.)

MS4 Permit Requirements for Illicit Discharge, pg
9 of permit
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Illicit Discharge is a discharge or deposit of
polluting materials, liquid or solid, that
can be transported to natural waterways.
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How Mn/DOT is Inspecting for Illicit Discharges
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HYDINFRA Inspectors

• Student Workers
• Maintenance People
• Consultants
• Long-Term HYDINFRA Inspectors

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Illicit Discharges to Mn/DOT

• Look for
• Unexpected pipes coming into the highway storm
  drain system.
• Pipes flowing when storm drains shouldnt be.
• HYDINFRA can also record deposits of dumped or
  otherwise deposited polluting materials.

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Trimble GPS Units
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If Mn/DOT Inspectors find an Illicit Discharge

• Report it to Area Maintenance Supervisor within
  24 hours for follow-up.
• Accidental chemical spills by trucks are not
  reported as Illicit Discharge, but are logged by
  Dispatch and forwarded to MPCA Duty Officer and
  cleaned up by trucking companys contractor.
  Mn/DOT Maintenance does emergency containment.

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HYDINFRA and Illicit Discharge Record Keeping
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Data Access Methods
HYDINFRA Database
Oracle Server
Forms
Reports
ArcView GIS
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HYDINFRA Features, located with GPS, plotted on
FSA Aerial Photo in ArcView
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Illicit Discharge Data in HYDINFRA
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End