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HomeMy WebLinkAboutSTORMWATER PRESENTATION FOR ATTACHMENT A 4-18-14Bozeman Creek 13 Storm water outfall East Lincoln Street right - away 14 Sediment loading 15 Illicit discharge 16 Sedimentation / Siltation 17 Montana Department of Environmental Quality 2012 E. coli Bacteria sampling sites 2419 CFU/100 ML sample 2420 CFU/100 ML sample 3400 CFU/100 ML sample 365 CFU/100 ML sample Storm drain East Lincoln Storm drain Bogart Park Man hole Mendenhall and Willson Storm drain North Rouse 18 Primary recreational contact limit 125 CFU/100ML Issues that should be addressed •Sixteen streams and rivers within the Gallatin watershed are impaired due to pollutant loading and are listed on DEQ,s 303 d list •City of Bozeman 54 million dollar waste water treatment facility may experience difficulty complying with discharge permit requirement standards set by DEQ. Non Compliance is due to water quality impairments to the East Gallatin River caused by impaired feeder streams to the East Gallatin River. •Declining base flows in our local streams and rivers will lead to less buffering capacity against pollutant loading. •Storm water should be treated prior to entering Bozeman Creek 19 Bozeman Creek Community Park including Bozeman Creek water quality improvement project Artistic Rendition 20 Project objectives –Remove contaminants from storm water runoff –Comply with Phase II NPDES MS4 permit –Help enable Bozeman Waste water treatment plant to keep in compliance with DEQ issued discharge permit. –Educate public about storm water issues and water quality (outdoor) classroom opportunity for public schools –Enhance public relations to stake holders and the tourism industry by demonstrating the City of Bozeman’s commitment to preserving the water quality of our fisheries for future generations –Establish a model process for developing future storm water treatment facilities –Contribute toward fulfilling the Bozeman Creek Neighborhood Plan –Foster stewardship of Bozeman Creek through a demonstration stormwater treatment pilot project 21 Proposed location for Bozeman Creek Community Park and stormwater treatment project Proposed stormwater treatment site 22 Stormwater discharge area 1.Total watershed area: 45.0 acres 2.Pervious surfaces: 22.0 acres 3. Impervious surfaces: 23.0 acres Treatment site 23 Bozeman Creek Community Park and Stormwater treatmet area 15,400 SQUARE FEET 24 Discharge - Stage relationship 25 DISCHARGE CALCULATIONS 26 Engineering drawing of proposed stormwater treatment project 27 Storm drain diversion structure 28 VORTECHS SEPERATOR INSITU FILTRATION SYSTEM Vortechs System Letters of support Montana Wetlands Legacy Madison Gallatin Chapter of Trout unlimited Montana Fish Wildlife and Parks 29 Letters of support Natural Resource Conservation Services Gallatin Valley Land Trust Gallatin Local Water Quality District City of Bozeman 30 Bozeman Creek Neighborhood Support 31 Letter of support Bozeman Creek Enhancement Committee 32 Community pledged support 33 Community pledged support 34 Community pledged support 35 Pollution solutions City considering charging residents new fee to treat stormwater Bart Manion poses with his sons Nick and Ben and their friend Mason Forney next to a culvert behind their house that dumps untreated storm water into Bozeman Creek. Manion no longer lets his kids eat the fish they catch in the creek because it's too polluted. By AMANDA RICKER, Chronicle Staff Writer, The Bozeman Daily Chronicle Bart Manion has watched disposable diapers, motor oil containers and red, plastic keg cups come out of the stormpipe on his south Bozeman property and flow into Bozeman Creek. In the older parts of town, any trash, pollutants and dirty water washed down curbside storm drains is piped to the nearest creek and released. "When we first moved here, my sons were on this creek everyday fishing," Manion said. "We were eating the fish left and right. Then finally, I had friends say, ‘Oh don't do that. You'll be paying for that later.'" Just from Story to Tamarack streets, there are 41 "outfalls," or drain pipes like Manion's, that flush stormwater from the roads directly into Bozeman Creek, Street Superintendent John Van Delinder said. Whether it's runoff from Main Street, the Montana State University campus, or the northeast neighborhood, if the pavement it washes across was built before the mid- 1980s, it likely drains into a local waterway, city engineer Dustin Johnson said. In roughly two-thirds of Bozeman neighborhoods, stormwater is not treated, Johnson estimated. "The core of the city is all untreated," he said. But the Bozeman City Commission has made it a top priority to change that. The commission in April unanimously backed the idea of creating a storm water utility, which would involve installing infrastructure to deal with stormwater and charging residents a new monthly fee on their sewer bills to pay for it. 36 Applicants commitment to stormwater treatment education 37 2ND Annual Bozeman Creek Cleanup 2012 38 Approximately 2 tons of debris have been removed from the banks of Bozeman Creek after 2 annual cleanup events. The applicant has organized these 2 events and will organize this years cleanup effort as well. Great memories on Bozeman Creek 39