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Home My WebLink AboutBMP Operations & Maintenance Manual BMP Operations and Maintenance Manual for Woodhall Lane Subdivision April 2008 ~J .-''~~~ ,- RECENE a _~ AFA 2 ` J DQCS ~/ $TfiEET F - Banning Engineering, P. C. 853 Columbia Road, Suite 101 Plainfield, IN 46168 Phone: (317) 707-3700 Fax: (317) 707-3800 E-mail: banning(a)BanningEngineering.com Job# 07093 ~ Table of Contents 1. BMP Owner Information 2. BMP Locations 3. Wet Pond a. Description b. Landscaping c. Maintenance Recommendations d. Maintenance Schedule 4. References 5. Inspection Checklist 6. Location Map with Aerial • Woodhall Lane Subdivision BMP Operations and Maintenance Manual _ Page 2 ~~7NAiN/NG • 1. BMP Owner Information: Name: JB Cohen Primary Contact: Jeffrey B. Cohen Street Address: 210 East 91s` Street, Suite A City/State/Zip Code: Indianapolis, IN 46240 Business Phone Number: (317) 844-4467 Eax Number: (317) 844-4527 Email: jb@jbcohen.com 2. BMP Locations: The project is located east of W. 106th Street and Towne Road intersection along the south side of Towne Road in Carmel, Indiana. The North Pond BMP is located west of Woodhall Lane entrance and the South Pond is located in the southwest corner of the property at the end of Woodhall Lane. Driving Directions From I-465, north on N. Michigan Road, take W. 96th Street east to Towne Road. Take a left on Towne Road and continue north to W. 106th StreeC. Turn right (east) on W. 106`h Street and the property is the • second lot on the left. The property is located south of Crooked Creek Golf Course. 3. Wet Pond: Description The wet pond [or retention pond] is a facility that removes sediment, Biochemical Oxygen Demand (BOD), organic nutrients, and trace metals from stonnwater runoff. This is accomplished by slowing down stonnwater using an in-line permanent pool or pond affecting settling of pollutants. The wet pond is similar to a dry pond, except that a permanent volume of water in incorporated into the design. The drainage area should be such that an adequate base flow is maintained in the pond. Biological processes occurring in the permanent pond pool aid in reducing the amount of soluble nutrients present in the water, such as nitrate and ortho- phosphorus (Schueler, 1987). Landscaping The banks of the detention storage basin shall have grass or other suitable vegetative cover. The banks of the detention storage basin extend from the top of bank down to the normal water elevation. Vegetative cover around detention facilities should be maintained as appropriate. The County will not be responsible for maintenance of the wet pond and bank slopes. • Maintenance Recommendations Ponds require regular maintenance and inspection practices. The table below outlines these practices. Woodhall Lane Subdivision BMP Operations and Maintenance Manual _ Page 3 ~~iINIVl1//NG • • Maintenance Recommendations Activi Schedule • If wetland components are included, inspect for invasive Semi-annual inspection vegetation. • Inspect for damage. • Note signs of hydrocarbon build-up, and deal with appropriately. • Monitor for sediment accumulation in the facility and forebay. Annual inspection • Examine to ensure that inlet and outlet devices are free of debris and o erational. • Re air undercut or eroded areas. As needed maintenance • Clean and remove debris from inlet and outlet structures. • Remove litter and woody growth. Monthly maintenance • Mow side slo es. • Manage and harvest wetland plants. Annual maintenance (if needed) • Monitor sediment accumulations, and remove sediment when the pool volume is reduced significantly, or the pond becomes 7- to 10-year maintenance eutrophic (excess bacteria growth). Maintenance Schedule Pond • Date Installed: Month After Installation 1 2 3 4 5 6 7 8 9 10 11 12 Clean and remove debris from inlet and outlet X X X X X X X X X X X X stntchtres Mow side slo es X X X X X X X X X X X X Ins ect for dama e X Note signs of bacteria growth, and manage X a ro riately Inspect for invasive plant species and manage X X a ro riately Woodhall Lane Subdivision BMP Operations and Maintenance Manual ~,~~ Page 4 ENG/NEER/NG • 4. References: 1) Hamilton County, Indiana Stormwater Management Ordinance (dated 2005) 2) National Menu of Best Management Practices for Stormwater Phase II, July 2005, United States Environmental Protection Agency 3) T.R. Schueler, 1987. Controlling Urban Runoff. A Practical Manual for planning and Designing Urban BMPs, Department of environmental Programs, Metropolitan Washington Council of Governments, Washington, DC. 5. Inspection Checklist: Attached (2 pages) 6. Location Map with Aerial: Attached (1 page) • u Woodhall Lane Subdivision BMP Operations and Maintenance Manual wp w'/!_ Page 5 ~~N/Y~/9IV Post-Construction BMP Ins~egtion Checklist Detention pond • Detention Pond Operation, Maintenance, and Management Inspection Checklist Project: Location: Date: Inspector: Signature: • u Time: Title: :r ~ ~ ~ ~~; .._. , ~- ~Sahsfactoryj z ,.. -r; _ :~ si `~ r _ ` Mawtenance Item ' ~ ~_ .... <: r ~.~ Comments -: _ __ _ _ - '..r . t ~~ •. ...., AUnsafisfacto. „„ _..~.,_~~.._~~ xc..,_ ., a.r::: ..-~;: ~ 1. Embankment and ewer enc s illwa Healthy vegetation with at least 85% ground cover. No signs of erosion on embankment. No anima] burrows. Embankment is free of cracking, bulging, or sliding. Embankment is free of woody vegetation. Embankment is free of leaks or seeps Emergency spillway is clear of obstructions. Ver[ica]/horizontal alignment of top of dam "As- Built" 2. Riser and rind al s illwa Low flow outlet free of-obstmction. Trash rack is not blocked or damaged. Riser is free of excessive sediment buildup Outlet pipe is in good condition. Control valve is operational Outfall channels are stable and free of scouring. Stormwater Ordinance Technical Standards Detention Pond O&M l of 2 July 2004 Post-Construction BMP Inspection Checklist Detention pond i • `J _ ~ ~ k .~ '~ ~.. z 3~ . ~Sahsfactoiy/ F r -. Y ~ r ::: ~,, .~. -•~, ' - Ma~htenance Item - - ~ . -~ - ~ ~ Comments ~ # `'' "~ _._ .._r,.._s~ ....... =,u ~~_.. ,:. __ . '" _.. :. ~ .. _~_iUnsahsfacto _._ . ~, ; . ~. _ -.:._.:..... ~,..:-m __..;:: 3. Permanent Pool (Wet Ponds) No Evidence of undesirable vegetation - No accumulation of floating or floatable debris No evidence of shoreline scour or erosion 4. Sediment Forebays Sediment is being collected by forebay(s) Forebay is not in need of cleanout (less than 50% full) 5. Dry Pond Areas Healthy vegetation with at least 85% ground cover. No undesirable woody vegetation Low flow channels clear of obstructions No evidence of sediment and/or trash accumulation 6. Condition of Outfall into Ponds No riprap failures No evidence of slope erosion or scouring Storm drain pipes are in good condition, with no evidence ofnon-stormwater discharges Endwalls/Headwalls are in good condition S[ormweter Ordinance Technical Standards Detention Pond O&M 2 oft July 2004