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HomeMy WebLinkAboutFred Richards OMFred Richards Playground Stormwater Facilities Operation & Maintenance May 30, 2019 1 Fred Richards Playground Stormwater Facilities Operation & Maintenance Prepared for CITY OF EDINA | PARKS & RECREATION 4801 W. 50TH STREET EDINA, MN 55424 Last Revised: May 30, 2019 Prepared by Emmons & Olivier Resources, Inc. 7030 6th Street North Oakdale, MN 55128 Fred Richards Playground Stormwater Facilities Operation & Maintenance May 30, 2019 2 Table of Contents 1 Project Introduction ................................................................................................................ 3 1.1 Purpose ............................................................................................................................. 3 1.2 Manual Intent ................................................................................................................... 3 1.3 System Summary.............................................................................................................. 3 1.3.1 Bioretention Basin .................................................................................................... 3 1.3.2 Filter Swale/Strip ...................................................................................................... 3 1.3.3 Project Contacts ........................................................................................................ 4 2 Routine Inspection and Maintenance ...................................................................................... 5 2.1 Inspection Schedules and Maintenance Activities ........................................................... 5 2.2 References ........................................................................................................................ 5 Fred Richards Playground Stormwater Facilities Operation & Maintenance May 30, 2019 3 1 Project Introduction 1.1 Purpose The purpose of the stormwater facilities located at the Fred Richards Playground (approx. Parklawn Avenue and Nine Mile Creek Regional Trail) is to capture the stormwater runoff from the picnic shelter and filter it before it returns to the adjacent pond or infiltrates into the groundwater. The nearest downstream waterbody is a pond/delineated wetland on the former Fred Richards golf course, forming one edge of the property boundary. 1.2 Manual Intent The intent of this manual is to provide guidance for the on-going operation and maintenance of the project components. This manual was created so that new users are able to gain a general understanding of the system components and will be able to address needs in the field in an expedited manner. 1.3 System Summary 1.3.1 Bioretention Basin Water from the concrete picnic shelter pad will be collected and filtered in a bioretention basin at the western edge of the playground area, next to the pond. The bioretention basin is 130 SF at the bottom and 467 SF at the emergency overflow elevation. Runoff from the picnic shelter enters the bioretention basin through a grass filter strip (see below). The interior of the bioretention basin consists of 18” depth engineered biomedia (consisting of 80% washed sand, 10% organic leaf compost, and 10% peat). Plants and biomedia within the bioretention basin filter stormwater before it enters the adjacent pond. Filtered water exits the bioretention basin through a 6” drain tile at the bottom of the biomedia. 1.3.2 Grass Filter Strip The filter swale/strip is located between the picnic shelter and the bioretention basin. It is 300 SF in area. It will collect water from the picnic shelter and concrete pad and deliver it to the bioretention basin. The filter strip will be planted with turf and will be maintained similar to the surrounding lawn areas. Fred Richards Playground Stormwater Facilities Operation & Maintenance May 30, 2019 4 1.3.3 Project Contacts The following list includes contact information for individuals involved in the construction and initial configuration of the project. Owner: City of Edina, Parks & Recreation Department Susan Faus 952-826-0431 Contractor: To be determined Engineer: Emmons & Olivier Resources Inc. Kyle Crawford, PE kcrawford@eorinc.com Britta Hansen, PLA bhansen@eorinc.com 651-770-8448 Fred Richards Playground Stormwater Facilities Operation & Maintenance May 30, 2019 5 2 Routine Inspection and Maintenance 2.1 Inspection Schedules and Maintenance Activities Periodic inspection of the project will be somewhat on-demand and weather dependent. Generally, each facility should be inspected on a schedule according to Table 1 below. Maintenance activities should be performed according to Table 2 below. Prepare and maintain a record log of all maintenance activities including inspection dates, condition of facilities and maintenance operations performed. Table 1. Routine Inspection Schedule Facility Inspection Frequency Bioretention Basin Bi-monthly (spring, summer, fall); monthly in winter Filter Swale/Strip Bi-monthly (spring, summer, fall); monthly in winter Table 2. Routine Maintenance Procedures Stormwater Facility Site Maintenance Bioretention Basin Check inlet areas for sediment deposition. Remove accumulated sediment and debris with a shovel. Check basin for areas of erosion, displaced mulch, and deceased plants. Remove trash, debris and dead vegetation. Fix areas of erosion, replace mulch and plants as needed. Hand remove or spot treat weeds with glyphosate herbicide. Filter Swale/Strip Remove any trash and debris in the swale as a part of routine landscape maintenance. Remove any accumulated sediment with a shovel. 2.2 References Please refer to the following sources for information and guidance on the maintenance of permeable pavers and other stormwater BMP’s. Minnesota Pollution Control Agency: http://stormwater.pca.state.mn.us/index.php/Category:Operation_and_maintenance Minnesota Stormwater Manual: http://stormwater.pca.state.mn.us/index.php/Stormwater_Manual_Table_of_Contents