Beth Neuendorf, MnDOT Metro Water Resources Engineer. Barb Loida, MnDOT Metro MS4 Engineer Environmental Workshop

Transcription

1 Beth Neuendorf, MnDOT Metro Water Resources Engineer Barb Loida, MnDOT Metro MS4 Engineer 2015 Environmental Workshop

2 Metro area from 2012 list there are 320 impaired waters proposed list add 66. These waters are listed on EPA s 303d list. Impaired waters require a TMDL study. We need to know how this impacts us. Chloride Turbidity Dissolved Oxygen Nutrients Bacteria (E.Coli) Biotic Impairments These need to address in SWPPP.

3 TMDL study looks at how much of a given pollutant a waterbody can receive and still meet MN Water Quality Standards. This amount is then divided up into waste load allocations (WLA) and assigned to the different regulated sources. There is also a (LA) Load Allocation and fudge factor. If your existing load is higher than your WLA you need to install treatment or modify operations to bring down your contribution. May also affect stabilization times (7 or 14 days) for construction projects.

4 Permittee name Preferred ID TMDL project name Waterbody ID Type of WLA WLA Unit Percent Flow Pollutant of Date reduction condition Waterbody name concern approved Bald Eagle Lake: Excess MNDOT Metro District MS Nutrients TMDL Individual 22 lbs/year 38% N/A Bald Eagle Lake Phosphorus 6/11/2012 Shingle Creek and Bass Shingle Creek; Nitrogenous Creek Biota and Dissolved Lower Shingle biochemical MNDOT Metro District MS Oxygen TMDL Categorical 11.8 kg/day N/A Creek Watershed oxygen demand 11/4/2011 Shingle Creek and Bass Shingle Creek; Nitrogenous Creek Biota and Dissolved Upper Shingle biochemical MNDOT Metro District MS Oxygen TMDL Categorical 35.8 kg/day N/A Creek Watershed oxygen demand 11/4/2011 Crystal, Keller, and Lee Lakes Nutrient Impairment MNDOT Metro District MS TMDL Individual lbs/day N/A Crystal Lake Phosphorus 9/30/2011 Crystal, Keller, and Lee Lakes Nutrient Impairment MNDOT Metro District MS TMDL Individual lbs/day N/A Lee Lake Phosphorus 9/30/2011 Spring Lake - Upper Prior MNDOT Metro District MS Lake Nutrient TMDL Individual 0.04 lbs/day 64% N/A Spring Lake Phosphorus 9/14/2011 Spring Lake - Upper Prior MNDOT Metro District MS Lake Nutrient TMDL Individual 0.1 lbs/day 0% N/A Upper Prior Lake Phosphorus 9/14/2011 Sweeney Lake Total MNDOT Metro District MS Phosphorus TMDL Individual 0.65 lbs/day 15% N/A Sweeney Lake Phosphorus 8/10/2011 MNDOT Metro District MS Minnehaha Creek Watershed District Lakes TMDL Individual lbs/day 9% N/A Lake Nokomis Phosphorus 4/25/2011 MNDOT Metro District MS Minnehaha Creek Watershed District Lakes TMDL Individual lbs/day N/A Parley Lake Phosphorus 4/25/2011 MNDOT Metro District MS kg/day Wet Twin and Ryan Lakes Precipitati on Year Nutrient TMDL Categorical 0.7 N/A Middle Twin Lake Phosphorus 11/9/2007 MNDOT Metro District MS kg/day Wet Twin and Ryan Lakes Precipitati on Year Nutrient TMDL Categorical 2.3 N/A South Twin Lake Phosphorus 11/9/2007 kg/day Wet Twin and Ryan Lakes Precipitati MNDOT Metro District MS Nutrient TMDL Categorical 0.8 on Year N/A Ryan Lake Phosphorus 11/9/2007 kg/day Dry Twin and Ryan Lakes Precipitati MNDOT Metro District MS Nutrient TMDL Categorical 0.3 on Year N/A Middle Twin Lake Phosphorus 11/9/2007 kg/day Dry Twin and Ryan Lakes Precipitati MNDOT Metro District MS Nutrient TMDL Categorical 1.5 on Year N/A South Twin Lake Phosphorus 11/9/2007 kg/day Dry Twin and Ryan Lakes Precipitati MNDOT Metro District MS Nutrient TMDL Categorical 0.4 on Year N/A Ryan Lake Phosphorus 11/9/2007 Lake Independence Lake MNDOT Metro District MS Phosphorus TMDL Individual ** lbs/day 0% N/A Independence Phosphorus 2/23/2007 Winter Low Flow (60 to 100%) MNDOT Metro District MS Shingle Creek Chloride TMDL Categorical 63% Shingle Creek Chloride 2/14/2007 Winter Runoff (60% to 0%) Shingle Creek Chloride 2/14/2007 MNDOT Metro District MS Shingle Creek Chloride TMDL Categorical 71% MNDOT Metro District MS Shingle Creek Chloride TMDL Categorical 24.8 tons/day High Shingle Creek Chloride 2/14/2007 Minnehaha Creek Watershed MNDOT Metro District MS District Lakes TMDL Individual lbs/day 29% N/A Lake Virginia Phosphorus 4/25/2011 Medicine Lake Excess MNDOT Metro District MS Nutrients TMDL Individual 0.26 lbs/day N/A Medicine Lake Phosphorus 2/8/2011 Cedar Island, Pike, and Eagle MNDOT Metro District MS Lakes Nutrient TMDL Categorical kg/day N/A Cedar Island Lake Phosphorus 4/14/2010 Cedar Island, Pike, and Eagle MNDOT Metro District MS Lakes Nutrient TMDL Categorical kg/day N/A Pike Lake Phosphorus 4/14/2010 Cedar Island, Pike, and Eagle MNDOT Metro District MS Lakes Nutrient TMDL Categorical kg/day N/A Eagle Lake Phosphorus 4/14/2010 MNDOT Metro District MS Lake Magda Nutrient TMDL Categorical kg/day N/A Magda Lake Phosphorus 9/30/2010 MNDOT Metro District MS Fish Lake Nutrient TMDL Individual lbs/day N/A Fish Lake Phosphorus 9/9/2010 lbs/122 MNDOT Metro District MS Kohlman Lake TMDL Individual 0.47 days 21% N/A Kohlman Lake Phosphorus 3/23/2010 MNDOT Metro District MS Golden Lake TMDL Individual lbs/day N/A Golden Lake Phosphorus 9/30/2009 Vermillion River/Vermillion Slough, Hasting Lower Vermillion River dam to Mississippi MNDOT Metro District MS Watershed Turbidity TMDL Individual 0% River TSS 9/29/2009 Schmidt, Pomerleau and MNDOT Metro District MS Bass Lakes Nutrient TMDL Categorical 1.12 kg/day N/A Bass Lake Phosphorus 9/25/2009 Hwy 61 to Peltier MNDOT Metro District MS TMDL Categorical 413 lbs/day High Lk TSS 6/18/2009 Hwy 61 to Peltier MNDOT Metro District MS TMDL Categorical 100 lbs/day Moist Lk TSS 6/18/2009 Mid- Hwy 61 to Peltier MNDOT Metro District MS TMDL Categorical 38 lbs/day Range Lk TSS 6/18/2009 Hwy 61 to Peltier MNDOT Metro District MS TMDL Categorical 17 lbs/day Dry Lk TSS 6/18/2009 Hwy 61 to Peltier MNDOT Metro District MS TMDL Categorical 6 lbs/day Low Lk TSS 6/18/2009 Headwaters to Hwy Biochemical MNDOT Metro District MS TMDL Categorical 104 lbs/day High 61 Oxygen Demand 6/18/2009 Headwaters to Hwy Biochemical MNDOT Metro District MS TMDL Categorical 25 lbs/day Moist 61 Oxygen Demand 6/18/2009 Mid- Headwaters to Hwy Biochemical MNDOT Metro District MS TMDL Categorical 10 lbs/day Range 61 Oxygen Demand 6/18/2009 Headwaters to Hwy Biochemical MNDOT Metro District MS TMDL Categorical 5 lbs/day Dry 61 Oxygen Demand 6/18/2009 Headwaters to Hwy Biochemical MNDOT Metro District MS TMDL Categorical 2 lbs/day Low 61 Oxygen Demand 6/18/2009 Hwy 61 to Peltier Biochemical MNDOT Metro District MS TMDL Categorical 104 lbs/day High Lk Oxygen Demand 6/18/2009 Hwy 61 to Peltier Biochemical MNDOT Metro District MS TMDL Categorical 25 lbs/day Moist Lk Oxygen Demand 6/18/2009 Mid- Hwy 61 to Peltier Biochemical MNDOT Metro District MS TMDL Categorical 10 lbs/day Range Lk Oxygen Demand 6/18/2009 Hwy 61 to Peltier Biochemical MNDOT Metro District MS TMDL Categorical 5 lbs/day Dry Lk Oxygen Demand 6/18/2009 Hwy 61 to Peltier Biochemical MNDOT Metro District MS TMDL Categorical 2 lbs/day Low Lk Oxygen Demand 6/18/2009 kg/day Average Twin and Ryan Lakes Precipitati MNDOT Metro District MS Nutrient TMDL Categorical 0.4 on Year N/A Middle Twin Lake Phosphorus 11/9/2007 kg/day Average Twin and Ryan Lakes Precipitati MNDOT Metro District MS Nutrient TMDL Categorical 1.5 on Year N/A South Twin Lake Phosphorus 11/9/2007 kg/day Average Twin and Ryan Lakes Precipitati MNDOT Metro District MS Nutrient TMDL Categorical 0.5 on Year N/A Ryan Lake Phosphorus 11/9/2007 MNDOT Metro District MS Shingle Creek Chloride TMDL Categorical 8.8 tons/day Moist Shingle Creek Chloride 2/14/2007 MNDOT Metro District MS Shingle Creek Chloride TMDL Categorical 4.5 tons/day Mid- Range Shingle Creek Chloride 2/14/2007 MNDOT Metro District MS Shingle Creek Chloride TMDL Categorical 3.4 tons/day Dry Shingle Creek Chloride 2/14/2007 MNDOT Metro District MS Shingle Creek Chloride TMDL Categorical 1.9 tons/day Low Shingle Creek Chloride 2/14/2007 MNDOT Metro District MS Ninemile Creek: Impaired Biota, Turbidity & Chloride TMDL Individual tons/day Nine Mile Creek Chloride 11/29/ % Como Lake: Excess Nutrients MNDOT Metro District MS TMDL Individual lbs/day 60% N/A Como Lake Phosphorus 12/23/2010 Wirth Lake: Excess Nutrients MNDOT Metro District MS TMDL Individual lbs/day N/A Wirth Lake Phosphorus 10/25/2010 Lake St Individual 105 lbs/year N/A Lake St. Croix Phosphorus 8/8/2012 MNDOT Metro District MS Croix Nutrient TMDL 38%

5 Annual MS4 reports to MPCA need to show progress toward meeting each WLA.

6 Access Database Issues: Multiple lakes with same name Many unnamed creeks Need to see where in relation impaired water is to our R/W

7 What TMDL? Where is it? Do we have a WLA? What do we need to do about it? MnDOT has 100 s of project in the Metro area each year. So question becomes how to communicate TMDL and WLA needs with designers.

8 GIS tool on MnDOT s ihub website Used familiar transportation theme stop lights Allows designers to see where their project is in relation to impaired water, what water is impaired for, if we have a WLA, if it is met, and if not, how to address it in the design and SWPPP.

9 Used MPCA s spatial information from their GIS database and merged it with ours. Went through TMDL reports and added information (do we drain to waterbody, if so, what is our WLA, what % of watershed is ours, what highways drain to it ) Have our geodatabase loaded onto Georilla and regularly updated.

10 Go to MnDOT ihub A to Z list. Go to G scroll down to Georilla Once Georilla has opened, go to the Natural Resources layer, then water. You ll see TMDL Lakes 2012 and TMDL Streams Click on layer you want to open. Use information tool to see more information on the waterbody you are interested in.

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12 Color Data Shows What Extra You Need to Do: MnDOT WLA YES List in SWPPP* and see if you can provide extra MnDOT WLA Met NO treatment. RED MnDOT Drain To YES ORANGE MnDOT WLA NO, TBD MnDOT WLA Met NO, TBD, NA MnDOT Drain To YES, TBD List in SWPPP* if MnDOT has drainage to the impaired water. YELLOW MnDOT WLA YES MnDOT WLA Met YES MnDOT Drain To YES List in SWPPP*. GREEN MnDOT WLA MnDOT WLA Met MnDOT Drain To NA NA No You don t have to do anything! WHITE For Chloride and E.coli Check if bridge drainage and see if treatment is possible.

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18 Impaired waters list updated every two years. Each impaired water has may subwatersheds. Still need for designers to look closer at areas since all subwatershed layers are too extensive to put on Georilla. Need for TMDL studies to show existing loads for all lakes and streams so know what our targets are.

19 Provides an effective tool for communicating between designers and MS4 staff for how to address TMDLs, WLAs and impaired waters in projects. Captures project information in our database for our annual MS4 report. Tool designed and created in house by Beth Neuendorf (Imagineer), Barb Loida (Data Extraordinaire) and Kellie Thom (1 st Place GIS Jockey).

20 Questions?