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Stormwater BMP Maintnenance

Stormwater BMP Maintnenance

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    BMP maintenance BMP maintenance Presentation Transcript

    • Stormwater BMP Maintenance Importance • Maintain the function of the BMP • Maintain environmental and habitat benefits • Maintain appearance-public acceptance • Prevent costly future repairs Installation and Maintenance of Stormwater Treatment BMPs Workshop, November 2013
    • Developing a Maintenance Strategy Facility Inventory • • • • Obtain maintenance plan and design documents Visit the site to review conditions, access Contact the local governmental jurisdiction Several communities in JOCO now require an establishment and maintenance plan to be recorded with the county Installation and Maintenance of Stormwater Treatment BMPs Workshop, November 2013
    • Developing a Maintenance Strategy Work Plan • • • • • • • Review facility inventory Review maintenance guides Create a list of activities, equipment needed and cost Review plan with owner and local governmental officials Modify or create checklist and record keeping procedures Assign and educate personnel Implementation and evaluation Installation and Maintenance of Stormwater Treatment BMPs Workshop, November 2013
    • Inspections Frequency and Type • • • • Construction process BMP age BMP type BMP condition • • • BMP design Plant type and species Upstream conditions Installation and Maintenance of Stormwater Treatment BMPs Workshop, November 2013
    • Regular Inspections Frequency Immediately after planting Weeds and invasive species a few months after planting • • • • • Weekly during establishment period Weekly/monthly after establishment period Complete when doing regular site maintenance Some inspections should occur during rainfall Some inspections should occur 24 hours after rainfall After establishment period Installation and Maintenance of Stormwater Treatment BMPs Workshop, November 2013 During rain event
    • Regular Inspections Location • • • • • Upstream Parking Lots & Paved Areas Upstream Unpaved Areas Forebays Main Treatment Area Storm Sewer Pipes and Structures Installation and Maintenance of Stormwater Treatment BMPs Workshop, November 2013
    • Regular Inspections Visual Assessment • • • • • Trash and debris Sediment accumulation Bare soil and erosion Plant coverage Plant health Sediment accumulation Trash and debris Plant coverage Plant Health Erosion Installation and Maintenance of Stormwater Treatment BMPs Workshop, November 2013
    • Regular Inspections Visual Assessment • • • • Soil moisture and percolation Weeds and invasive species Animal and insect damage Mulch condition Soil percolation Weeds and invasive species 2 months after planting Animal damage Mulch Installation and Maintenance of Stormwater Treatment BMPs Workshop, November 2013
    • Periodic Inspections Frequency • Annually or as needed • Increase frequency to monitor identified potential problems • During drought • During storm events Installation and Maintenance of Stormwater Treatment BMPs Workshop, November 2013
    • Periodic Inspections Visual Assessment • • • Storm sewer pipe and structure condition Dam, embankment, overflow weir condition Stormwater Flow Installation and Maintenance of Stormwater Treatment BMPs Workshop, November 2013
    • Periodic Inspections Testing and Surveys • • • • • Soil testing Soil profile Stormwater flow Detention volume Water testing Installation and Maintenance of Stormwater Treatment BMPs Workshop, November 2013
    • Regular Maintenance Procedures Soil Stabilization • • • Establishment Period Management Period Repairs Installation and Maintenance of Stormwater Treatment BMPs Workshop, November 2013
    • Regular Maintenance Procedures Clean Up – Trash and Debris • • • • Location Equipment Frequency Disposal Installation and Maintenance of Stormwater Treatment BMPs Workshop, November 2013
    • Regular Maintenance Procedures Clean Up – Sediment Removal • • • • • • Location (Upstream, Forebay, Structures, Ponding & Treatment Area) Equipment Method (Avoid heavy equipment of select soils) Frequency Disposal Amount (All or partial) Installation and Maintenance of Stormwater Treatment BMPs Workshop, November 2013
    • Regular Maintenance Procedures Plant Density Year 1 • • • • Year 2 Facility age Plant loss Season Plant spacing Installation and Maintenance of Stormwater Treatment BMPs Workshop, November 2013 Year 4
    • Regular Maintenance Procedures Invasive Species Removal –General • • • • Importance Frequency Environmentally sensitive practices Plant identification-use photo guides Installation and Maintenance of Stormwater Treatment BMPs Workshop, November 2013
    • Regular Maintenance Procedures Invasive Species Removal –By Hand • • • • Method Frequency Weed species knowledge Clean Up (removal of Biomass) Installation and Maintenance of Stormwater Treatment BMPs Workshop, November 2013
    • Regular Maintenance Procedures Invasive Species Removal –Mowing • • • • • • Equipment Method Height Frequency Edging Clean Up (removal of Biomass) Installation and Maintenance of Stormwater Treatment BMPs Workshop, November 2013
    • Regular Maintenance Procedures Invasive Species Removal –Edging & Trimming • • • • • Purpose Equipment Method Frequency Clean Up (removal of Biomass) Installation and Maintenance of Stormwater Treatment BMPs Workshop, November 2013
    • Regular Maintenance Procedures Invasive Species Removal –Burning • • • • Benefits Local regulations Method (Spot and Large Area) Frequency Installation and Maintenance of Stormwater Treatment BMPs Workshop, November 2013
    • Regular Maintenance Procedures Invasive Species Removal –Chemical • • • • Integrated Chemical Management Product Selection Timing Method/Application Installation and Maintenance of Stormwater Treatment BMPs Workshop, November 2013
    • Regular Maintenance Procedures Invasive Aquatic Species Removal • • • Cattails Reed Canary Grass Algae Installation and Maintenance of Stormwater Treatment BMPs Workshop, November 2013
    • Regular Maintenance Procedures Invasive Woody Species Removal • • • • Location Equipment Method Frequency Installation and Maintenance of Stormwater Treatment BMPs Workshop, December 2011
    • Regular Maintenance Procedures Plant Maintenance • Aesthetic Goals • Frequency • Plant Characteristics • Watering • Replacements • Disease Installation and Maintenance of Stormwater Treatment BMPs Workshop, November 2013
    • Regular Maintenance Procedures Soil Amendments • • • • • Type (Organic vs Inorganic Composition Frequency Application Rate Adjacent Areas Installation and Maintenance of Stormwater Treatment BMPs Workshop, November 2013
    • Regular Maintenance Procedures Pest Management • • Animal damage Insects Installation and Maintenance of Stormwater Treatment BMPs Workshop, November 2013
    • Stormwater BMP Maintenance Resources • APWA MARC Maunal of Best Management Practices for Stormwater Quality, Mid America Regional Council, August 2009 • “Maintaining Stormwater Systems: A Guidebook for Private Owners and Operators”, Northern Virginia Regional Commission, January 2007 • “Practically Easy Landscape Maintenance: A Care Manual for Natural Drainage Systems”, Seattle Public Utilities, 2005 • “Landscape Guide for Stormwater Best Management Practice Design”, Metropolitan St Louis Sewer District, 2009 • “A Citizen’s Guide to Maintaining Stormwater Best Management Practices”, Lake County Stormwater Management Commission, October 2004 • “Stormwater Wet Pond and Wetlands Management Guidebook”, EPA 833-B-09-001 February 2009 • Stormwater BMPs Selection, Maintenance & Monitoring, Gordon England and Stuart Stein, July 2007 Installation and Maintenance of Stormwater Treatment BMPs Workshop, November 2013
    • Stormwater BMP Maintenance Questions? Installation and Maintenance of Stormwater Treatment BMPs Workshop, November 2013
    • Plant Maintenance for BMPs Jason Dremsa- Applied Ecological Services Installation and Maintenance of Stormwater Treatment BMPs Workshop, November 2013
    • Overview • Updates to the BMP Manual Maintenance Tables • First Year establishment Priorities • Second & Third Year Establishment Priorities • Continuing Maintenance Issues • Resources for Maintenance (BMP Manual) Installation and Maintenance of Stormwater Treatment BMPs Workshop, November 2013
    • BMP Manual Maintenance Updates Tables – Section 8 Typical Maintenance Activities: • Rain Garden (8.1) • Bioretention Cell (8.4.6) • Extended Dry Detention Basin (8.12.6) Installation and Maintenance of Stormwater Treatment BMPs Workshop, November 2013
    • Activity Frequency Establishment (1-3yrs) Watering plants (seeded areas up to 8 weeks, plugs and container plants in drought ) Weed control (flail mow, string-trim, selective/preemerg herbicides, mechanical removal , foliar herbicide) Remove litter and debris (trash, leaves, sand, mower discharge) Monitor & repair erosion (stabilize soil, replace plants, secure edging) Check for standing water (longer than design, any puddles, saturated soil) Add mulch (moisture & weed control with plugs/containers, 3” or less) Inspect drainage area (parking lot sweeping, open dumpsters, etc) Replace dead plants (use design species/size: overseed, install deep cell plugs, maintain density) Installation and Maintenance of Stormwater Treatment BMPs Workshop, November 2013 1” per week as needed Monthly Monthly Monthly Monthly Annually Annually Annually, as needed
    • Activity Frequency Establishment (3yrs+) Vegetation cleanup (string-trim, spot spray, prescribed burn, prune) Evaluate plant composition (woody invasion, grass/flower ratio, “right plant right place”) Sediment removal, erosion control (pretreatment structures: forebay, check dams, swale) Address animal damage (beaver dams, muskrat burrows, deer rubs) Verify structural component function (v-notch weir, check dams, outlet protection, area inlet, valve or gate lube, underdrain, inflows) Installation and Maintenance of Stormwater Treatment BMPs Workshop, December 2011 Annually, spring or fall Annually Annually Annually Annually
    • Activity Frequency Native Vegetation Swale String trim vegetation to minimize disturbance Annually Inspect for erosion in flow lines and slopes Annually Bioretention cell Evaluate soils for nutrients, physical make-up Annually Fortify edging material/adjacent landscape beds Annually Typical maintenance activities are outlined to provide a basis for scheduling and planning work but should not be considered wholly comprehensive or definitive. Activities and frequencies will vary depending on site conditions and expectations related to adjacent land use. Some activities shown may continue through the establishment and maintenance phases. It’s important to use adaptive management based on the goals of the practice and to integrate evaluation and assessment into a long-term maintenance plan. Installation and Maintenance of Stormwater Treatment BMPs Workshop, November 2013
    • First Year/Establishment Priorities: Erosion Control: • Rills • Gullies Sheet Flow or Concentrated? Annual Weeds: ID, removal, examples… Installation and Maintenance of Stormwater Treatment BMPs Workshop, November 2013
    • First Year/Establishment Priorities: Annual weeds – Definition: • Annual plants complete their life cycle in one year. • A weed is a plant out of place. Installation and Maintenance of Stormwater Treatment BMPs Workshop, November 2013
    • First Year/Establishment Priorities: Removing Annual weeds • Annual weeds should be cut or broken off at the base to limit soil disturbance; disturbance after planting can lead to erosion and more weeds. Installation and Maintenance of Stormwater Treatment BMPs Workshop, November 2013
    • First Year/Establishment Priorities: Common Annual Weeds (in Johnson County/Kansas City) List: •ANNUAL BROAD LEAF WEEDS : •common sunflower •mares tail •giant ragweed •common ragweed •cocklebur •lambs quarter •prickly lettuce •pigweed •velvet leaf •hedge parsely •ANNUAL GRASS WEEDS: •fox tail (green, yellow, & giant) Installation and Maintenance of Stormwater Treatment BMPs Workshop, November 2013
    • First Year/Establishment Priorities: Annual Broad Leaf Weed Control : common sunflower Helianthus annuus •2 to 10 feet tall •Found in cultivated land, pastures, and BMPs Installation and Maintenance of Stormwater Treatment BMPs Workshop, November 2013
    • First Year/Establishment Priorities: Annual Broad Leaf Weed Control : mares tail Conyza canadensis •1 to 6 feet tall •Found in pastures, roadsides, and BMPs Installation and Maintenance of Stormwater Treatment BMPs Workshop, November 2013
    • First Year/Establishment Priorities: Annual Broad Leaf Weed Control : giant ragweed Ambrosia trifida •12 to 18 feet tall on fertile, moist soils; 4 to 8 feet in less fertile, drier areas •Found mostly on fertile, moist soils, especially bottomlands Installation and Maintenance of Stormwater Treatment BMPs Workshop, November 2013
    • First Year/Establishment Priorities: Annual Broad Leaf Weed Control : common ragweed Ambrosia artemisiifolia •1 to 4 feet tall •Found in old pastures, BMPs, roadsides, and cultivated land Installation and Maintenance of Stormwater Treatment BMPs Workshop, November 2013
    • First Year/Establishment Priorities: Annual Broad Leaf Weed Control : cocklebur Xanthium strumarium •2 to 4 feet tall •Found in cultivated fields, abandoned land, poor pastures, and roadsides Installation and Maintenance of Stormwater Treatment BMPs Workshop, November 2013
    • First Year/Establishment Priorities: Annual Broad Leaf Weed Control : lambs quarter Chenopodium album •3 to 4 feet tall •Found in cultivated crops Installation and Maintenance of Stormwater Treatment BMPs Workshop, November 2013
    • First Year/Establishment Priorities: Annual Broad Leaf Weed Control : prickly lettuce Lactuca serriola •2 to 6 feet tall •Found in roadsides, fence rows, and BMPs Installation and Maintenance of Stormwater Treatment BMPs Workshop, November 2013
    • First Year/Establishment Priorities: Annual Broad Leaf Weed Control : pigweed Amaranthus retroflexus •up to 6 feet tall •Found in cultivated fields, yards, fence rows, and BMPs Installation and Maintenance of Stormwater Treatment BMPs Workshop, November 2013
    • First Year/Establishment Priorities: Annual Broad Leaf Weed Control : velvet leaf Abutilon theophrasti •often 6 to 8 feet tall •Found principally in soybean and corn fields but occasionally in gardens, and along fence rows Installation and Maintenance of Stormwater Treatment BMPs Workshop, November 2013
    • First Year/Establishment Priorities: Annual Broad Leaf Weed Control : hedge parsely •1-3 feet tall •Found in BMPs, edges of woods, and low shady places Installation and Maintenance of Stormwater Treatment BMPs Workshop, November 2013
    • First Year/Establishment Priorities: Annual Grass Weed Control : fox tail (green, yellow, giant) Setaria spp. •Typically 1 to 4 feet tall •Found in cultivated crops, gardens, turf Installation and Maintenance of Stormwater Treatment BMPs Workshop, November 2013
    • Second &Third Year/Establishment Priorities: • • • • • Replacement Planting Inlet, forebay, repair/cleaning On-going Erosion Problem Other Issues Hydrology Installation and Maintenance of Stormwater Treatment BMPs Workshop, November 2013
    • Second &Third Year/Establishment Priorities: Biennial weeds– • A plant out of place that normally requires two seasons to complete its life cycle, growing usually as a rosette in the first season and producing flowers and fruits and then dying in the second season. Perennial weeds – • A plant out of place that lives for more than two years, retuning from their root-stock; rather than seeding themselves as an annual plant does. Installation and Maintenance of Stormwater Treatment BMPs Workshop, November 2013
    • Second &Third Year/Establishment Priorities: • Removing Biennial weeds: Cut stalk before seed production, Pull (with out disturbing soil) kill Rosette with herbicide. • Removing Perennial weeds: Spray with herbicide or Pull (with out disturbing soil) and/or burn with prescribed fire (if permitted). Installation and Maintenance of Stormwater Treatment BMPs Workshop, November 2013
    • Second &Third Year/Establishment Priorities: Common Biennial & Perennial Weeds (in Johnson County/Kansas City) List: •BIENNIAL WEEDS: •PERENNIAL WEEDS: •Queen Anne’s lace •musk thistle •Sweet clover? •curly dock •red clover •white clover •field bind weed •johnsongrass -photo •sericea lezpedeza photo •reed canary grass Installation and Maintenance of Stormwater Treatment BMPs Workshop, November 2013
    • Second & Third Year/Establishment Priorities: Biennial Broad Leaf Weed Control : Queen Anne’s lace Daucus carota •1 to 3 feet tall •Found in meadows, pastures, and roadsides; not in cultivated fields Installation and Maintenance of Stormwater Treatment BMPs Workshop, November 2013
    • Second & Third Year/Establishment Priorities: Biennial Broad Leaf Weed Control : musk thistle Carduus nutans •Noxious Weed •3 to 6 feet tall •Found in pastures, meadows, and BMPs Installation and Maintenance of Stormwater Treatment BMPs Workshop, November 2013
    • Second & Third Year/Establishment Priorities: Perennial Broad Leaf Weed Control : curley dock Rumex crispus •1 to 4 feet tall •Found in pastures, roadsides, new hay fields, and BMPs Installation and Maintenance of Stormwater Treatment BMPs Workshop, November 2013
    • Second & Third Year/Establishment Priorities: Perennial Broad Leaf Weed Control : red clover Trifolium pratense •1 -3 feet tall •Found in disturbed sites Installation and Maintenance of Stormwater Treatment BMPs Workshop, November 2013
    • Second & Third Year/Establishment Priorities: Perennial Broad Leaf Weed Control : white clover Trifolium repens •Up to .5 feet tall •Found in disturbed sites and lawns Installation and Maintenance of Stormwater Treatment BMPs Workshop, November 2013
    • Second & Third Year/Establishment Priorities: Perennial Broad Leaf Weed Control : field bind weed Convolvulus arvensis •Noxious Weed •2 to 7 feet long, twining or spreading over ground •Able to persist and spread in all noncultivated areas Installation and Maintenance of Stormwater Treatment BMPs Workshop, November 2013
    • Second & Third Year/Establishment Priorities: Perennial Broad Leaf Weed Control : serecia lezpedeza Lespedeza cuneata •Noxious Weed •1 to 6 feet tall •Found in disturbed prairies, pastures, and along road sides Installation and Maintenance of Stormwater Treatment BMPs Workshop, November 2013
    • Second & Third Year/Establishment Priorities: Perennial Grass Weed Control : reed canary grass Phalaris arundinacea •Noxious weed •2-6 feet tall •Moderate moisture, moist, to wet; shores, marshes Installation and Maintenance of Stormwater Treatment BMPs Workshop, November 2013
    • Second & Third Year/Establishment Priorities: Perennial Grass Weed Control : johngrass Sorghum holepense •Noxious weed •1-1/2 to 6 feet or •more tall •Found in overflow bottoms and disturbed sites Installation and Maintenance of Stormwater Treatment BMPs Workshop, November 2013
    • Resources for Maintenance of Stormwater Management BMPs • “Maintaining Stormwater Systems: A Guidebook for Private Owners and Operators”, Northern Virginia Regional Commission, January 2007 • “Practically Easy Landscape Maintenance: A Care Manual for Natural Drainage Systems”, Seattle Public Utilities, 2005 • “Landscape Guide for Stormwater Best Management Practice Design”, Metropolitan St Louis Sewer District, 2009 • “Georgia Stormwater Management Manual, Volume 2: Technical Handbook”, August 2001, Appendix E & F • “Missouri Pond Handbook”, Missouri Dept of Conservation 2008 • “Aquatic Plants and Their Control”, Kansas State University Agricultural Experiment Station and Cooperative Extension Service 2005 • “Horticulture Report: Buffalo Grass Lawns” (MF 658), Kansas State University Agricultural Experiment Station and Cooperative Extensive Service, Sept 2001 • “Stormwater Treatment: Assessment and Maintenance”, University of Minnesota, St Anthony Falls Laboratory 2010 (http://stormwaterbook.safl.umn.edu/) • “Stormwater Wet Pond and Wetlands Management Guidebook”, EPA 833-B-09-001 February 2009 Installation and Maintenance of Stormwater Treatment BMPs Workshop, November 2013
    • Questions Installation and Maintenance of Stormwater Treatment BMPs Workshop, November 2013