ITEM 6.1 SWPPP Annual MeetingITEM 6_1
City of Otsego
SWPPP Annual Meeting
I. Introduction
➢ Required by National Pollutant Discharge Elimination System (NPDES)
➢ Regulated by Minnesota Pollution Control Agency
➢ City Adopted a Storm Water Pollution Prevention Program (SWPPP)
➢ Goal: Reduce the discharge of pollutants into receiving waters to the
Maximum Extent Practicable (MEP)
II. Six Minimum Control Measures
1. Public Education and Outreach
Goal - Reduce pollutants and improve water quality by educating the
public, city officials, and city staff about the impacts on stormwater runoff.
Activity —Distribute literature on fertilizer, chlorinated pool discharges,
automotive liquids, pet waste, construction activities, etc.
2. Public Participation and Involvement
Goal —Allow public to provide input on the City's SWPPP
Activity —Annual public meeting
3. Illicit Discharge Detection and Elimination
Goal — Reduce / eliminate non-stormwater discharges into the storm
sewer system and receiving waters.
➢ Create a comprehensive storm sewer system map to help gain a
better understanding of the City's storm sewer system and assist in
tracking illicit discharges.
➢ Identify illicit discharges through inspections of the storm sewer
system (i.e. identify dry weather discharges, staining, odors)
4. Construction Site Stormwater Runoff Control
Goal — Reduce sediment and erosion by implementing standards and
enforcing through inspections. Require waste controls for site operators.
City of Otsego
SWPPP Annual Meeting
5. Post -Construction Storrnwater Management
Goal — Reduce pollutants in stormwater° discharges by implementing
permanent stormwater facilities, such as NURP ponds and treatment
structures. Implement standards to ensure permanent BMP's are installed
and maintained for new development and re -development.
6. Pollution Prevention / Good Housekeeping
Goal — Reduce pollutants in storm -water discharges by employing good
housekeeping practices for municipal/public works operations.
Activity — Street sweeping, pond, outfall and structure inspections,
stockpile and handling area inspections, maintenance, repairs, etc.
III. Upcoming Challenges
➢ Current permit expires July 31, 2018.
➢ Inventory of all lakes, ponds, wetlands, rivers, streams creeks, ditches, and
ravines - due with submittal of new permit application. Includes determining
surface area, ID numbers, and number of discharges. (Stage 1)
➢ Stage 2 will likely include a survey of all NURP ponds and evaluation of
treatment capacity. City will eventually be required to dredge / maintain
ponds as they fill up with sediment (expensive).
➢ Impaired Waters / Total Maximum Daily Load (TMDL) — Requires
implementation by City after TMDL Plan is approved.
Mississippi River — Mercury in fish tissue, Polychlorinated biphenyls in
fish Tissue (2011)
Crow River — Fecal Coliform (2012), Fish bioassessments (2017),
Turbidity (2012), Dissolved Oxygen (2015)
➢ Funding — Adjustments to Storm Water Utility Fee may be required as actual
costs are calculated and potential additional costs are determined.
➢ Management — May want to evaluate regional ponding vs. small development
ponds. Regional ponding could provide large future cost savings when the
costs of inspections, maintenance, and dredging are considered.
Major Changes to
2013-2018 MS4 Permit
New Permit Requirements:
• Ordinance revisions
• ERPs (Emergency Response Procedures)
• Illicit Discharge training for all field staff
• Illicit Discharge Inspections, including retention of inspection records
• Update Map to show all pipes 12 inches and greater
• Tougher ESC Programs (we have to act more like the MPCA)
• We need to collect Contractors rainfall and inspection records
• We have to have our own inspection records for ESC inspections
• Non -degradation rules - not net increase in volume, TSS and TP
• Requirements for mitigation program
• Requirements for fee in -lieu programs
• Maintenance Agreements for private ponds
• Facilities Inventory (all municipal parks, city hall site, public works) and BMP's to
minimize pollutants to the MEP
• Pond Inventory (basically a big excel spreadsheet)
• Determine treatment effectiveness of existing ponds based on depth of sediment and
drainage area (if it has changed)
• Quarterly inspections of stockpiles
• Record keeping, record keeping, record keeping
• And the BIGGEST ONE -THIS IS AN ENFORCEABLE PERMIT
Still have to:
• Public Education via distribution of flyers, brochures, information on website,
newsletter articles, etc.
• Public Participation via annual meeting, stormwater booths at City events, storm drain
stenciling, rain garden programs, etc.
• Inspect ponds and outfalls, including retention of inspection records
• Inspect skimmer structures (i.e. structural pollution control devices) including inspection
records
• Perform maintenance if need is identified through inspections
• Written Employee Training Program including records of training dates