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4.1 Storm Water Pollution Prevention Program Request for City Council Action DEPARTMENT INFORMATION ORIGINATING DEPARTMENT REQUESTOR: MEETING DATE: Public Works City Engineer Wagner June 26, 2023 PRESENTER(s) REVIEWED BY: ITEM #: City Engineer Wagner City Administrator/Finance Director Flaherty 4.1 – Storm Water STRATEGIC VISION MEETS: THE CITY OF OTSEGO: X Is a strong organization that is committed to leading the community through innovative communication. X Has proactively expanded infrastructure to responsibly provide core services. Is committed to delivery of quality emergency service responsive to community needs and expectations in a cost-effective manner. Is a social community with diverse housing, service options, and employment opportunities. Is a distinctive, connected community known for its beauty and natural surroundings. AGENDA ITEM DETAILS RECOMMENDATION: City Staff recommends the City Council hold a public meeting per the requirements of MPCA and the adopted Storm Water Pollution Prevention Program. ARE YOU SEEKING APPROVAL OF A CONTRACT? IS A PUBLIC HEARING REQUIRED? No No BACKGROUND/JUSTIFICATION: The City of Otsego must annually hold a public meeting allowing residents to communicate any ideas, suggestions or concerns they may have regarding storm water within the City. SUPPORTING DOCUMENTS ATTACHED: • MPCA Storm Water Brochure • Example MS4 Inspection Reports • Stormwater Pollution Illicit Discharge Article from City Newsletter POSSIBLE MOTION PLEASE WORD MOTION AS YOU WOULD LIKE IT TO APPEAR IN THE MINUTES: No action or motion required. BUDGET INFORMATION FUNDING: BUDGETED: Fund 222 – Storm Water Utility Yes When stormwater drains off a construction site, it carries sediment and other pollutants that can harm lakes, streams, and wetlands. The U.S. Environmental Protection Agency estimates that a one-acre construction site can lose as much as 20 to 150 tons of soil every year due to erosion and stormwater runoff. What can you do to protect receiving waters from pollution? See the 10 Steps to Stormwater Pollution Prevention inside of this pamphlet to learn ways to minimize sediment from leaving your construction site. By following these steps, you can help keep our water clean! PROTECT WATER A common plan of development or sale is a connected area where separate construction activities may happen at different times, on different schedules, but under one proposed plan. Examples of common plans include: Residential subdivisions Commercial/industrial parks Phased projects EXAMPLE: You need a permit if you are working on one 0.3-acre lot that is part of a 5-acre development. Subdivision registration is available for sites that are within a common plan of development that already has permit coverage. COMMON PLANS www.pca.state.mn.us 651-296-6300 | 800-657-3864 info.pca@state.mn.us You need a construction stormwater permit if your project disturbs: One or more acres of soil Less than one acre, but part of a larger plan of more than one acre 1+ .15acres DON’T FORGET! Online permit applications: www.pca.state.mn.us/water/ construction-stormwater Apply for your construction stormwater permit BEFORE construction begins! wq-strm2-111 800-657-3864 | info.pca@state.mn.us www.pca.state.mn.us Graphic courtesy US EPA. Adapted by MPCA. Site St abilization Immediately stabilize exposed portions of the site whenever construction work will stop for 14 or more days, even if work is on ly temporarily stopped. Remember, ﬁnal stabilization is required pr ior to terminating permit coverage. Keep in mind that temporary or permanent stabilization must be completed within 7 days if your project is within 1 mile of a special or impaired water. Keep an Up -to-Date Copy of Your SWPPP on Site Keep a copy of your complete and up-to-date SWPPP, including site maps showing where each BMP is or will be installed, and records of the site inspections completed by a trained inspector on site and easily accessible. Maintain a Stabilized Exit Pad Minimize sediment track out from vehicles exiting your site by maintaining an exit pad made of crushed rock spread over geotextile fabric, a shaker rack, or a wash rack at the construction site exit. If sediment track-out occurs, remove deposited sediment within 24 hours of discovery. Install a Concrete/Stucco Washout Basin Designate a leak-proof basin lined with plastic for washing out used concrete and stucco containers. Never wa sh excess stucco or concrete residue down a storm drain or into a stream! Install Inlet Controls Sediment control logs, gravel barriers, and sand or rock ba gs are options for e ective inlet controls. Make sure to remove accumulated sediment whenever the device becomes nonfunctional. Install Perimeter Controls on Downhill Lot Line Install perimeter controls such as sediment ﬁlter logs or si lt fences around the downhill boundaries of your site. Make sure to remove accumulated sediment whenever it has reached halfway up the control. Designate Waste Disposal Areas Clearly identify separate waste disposal areas on site for hazardous wa ste, construction waste, and domestic wa ste by designating with signage, and protect from run-on and runo. Protect Construction Materials from Run-On and Runo At the end of every workday and during precipitation events, prov ide cover for materials that could leach pollutants. Stockpile Yo ur Soil MPCA’s CGP requires operators to preserve native topsoi l on site unless infeasible and protect all soil storage piles from run-on and runo. For smaller stockpiles, covering the entire pi le with a tarp may be sufﬁcient. Protect Any Areas Reserved for Vegetation or Inﬁltration and Preserve Existing Tr ees If you will be installing inﬁltration-based features such as ra in gardens or bioswales, make sure these areas are designated as o limits to avoid compaction. Save time and money by preser ving existing mature trees during construction. Preserving mature trees minimizes the amount of soil that needs to be stabilized once construc tion is complete, and minimizes the amount of runo du ring and after construction activity. 10 Steps to Stormwater Pollution Prevention on Small Residential Construction Sites NOTE: This graphic does not address post-construction stormwater treatment permit requirements !@ !@ 8 0 T H 70TH MACIVER60TH MCALLISTER78TH MARLOWE7 3 R D 71ST 77THLABEAUX7 6 T H 6 2 N D 75TH 72NDLARGE 67THMARTIN FARMS63RD KITTREDGE MARSHALL7 4 TH KALLAND6 9 T HLANDER MARX68THMASONLAMBERTLANNONMACKENZIELYDIALASALLELAMONT65THMARQUETTE64TH 66TH 7 9 TH MACKENIZIE KAHLER MARTINLARABEELITTLELACHMAN61STLASALLE KALLAND6 9 T H 70TH 76TH MARQUETTE72NDLARGE74TH 67TH7 4 T H MARTIN7 7 T H 65TH KALLAND 71ST M ARLO W E LANDER76TH 74TH M A S O N 71ST MARLOWE71ST MASON7 8 T H 73RD 75THLAMBERTLAMONT 77THKAHLER LASALLEMARX7 6 T H LANNONMACKENZIE 79TH 73RD72ND62ND 73RD 71ST 74TH 67TH 71STLARGE74TH L A S A L L E 76TH 75THKALLAN D67TH 71S T 79TH 2022 MS4Inspections 0 800 1,600400 Feet µ Legend !@ Skimmers Storm Pond SK-25-121-24-1-2-01: Basin crack through wall, grout crumbling SK-31-121-24-3-4-02: Grate bent upwards missing bolts and loose bolts K:\GIS\Projects\Municipa l\O TSEGO \O T426 \20 22\2 022 MS4 Inspections ne eding repa ir.mxd STORMWATER POLLUTION: ILLICIT DISCHARGE What is Stormwater? Stormwater is precipitation from rain or snow that is not absorbed into the ground and flows across our yards, driveways, streets, and into our storm drains and ditches. These drains and ditches lead directly into our waterways. Anything besides stormwater that gets picked up along the way and ends up in these drains is considered an illicit discharge. What is Illicit Discharge? An illicit discharge is any contaminant that enters the City’s storm sewer system. Examples of illicit discharge include: yard waste, pet waste, trash, sediment from construction sites, chlorinated pool water, paint, commercial car wash wastewater, gasoline or oil, salt from winter de-icing, and sewage. Why is Illicit Discharge harmful? Stormwater is not treated before entering our lakes, rivers, and streams. All the contaminants in stormwater affect aquatic life. For example, yard waste is a source of phosphorus, which contributes to algal blooms. Sediment clouds our waters, making it difficult for sunlight to reach native aquatic plants. Pet waste contributes to harmful bacteria, and chlorinated pool water can be lethal to some aquatic species. These contaminants diminish water quality and negatively affect activities like fishing and swimming. What Can I Do To Help? • Pick up after your pet. • Toss litter in the trash. • Compost grass clippings and leaf litter. • Check your car for leaks. • Maintain your septic tank regularly. • Minimize the use of pesticides and fertilizers. How do I know an Illicit Discharge is occurring? Possible indicators of an occurring illicit discharge include: unusual color or cloudiness, strong pungent or musty odor, floating debris, surface scum or foam, oil sheen, and dead fish. What Should I do if I see Illicit Discharge? 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