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Home My WebLink AboutErosion and Sediment Control during ConstructionDevelopment Best Practices for Stormwater Control Erosion and Sediment Control during Construction What can I do to control erosion and sediment on my construction site? • Minimize exposed soils by phasing construction and grading and applying temporary cover • Minimize erosion of exposed soils by planning for critical slopes and areas of flow • Minimize the transport of sediment by diverting runoff away from exposed soils or providing silt barriers, temporary settling areas, and catch basin inserts down-gradient of exposed soils • Clean, capture, and return sediment that is transported off-site • Conduct regular inspections For more information on erosion and sediment control, contact the Engineering Department at 952-826-0371.\ Additional information can be found by visiting these resources: https://cfpub.epa.gov/npstbx/files/ksmo_sediment.pdf https://stormwater.pca.state.mn.us/index.php?title=General_principles_for_erosion_prevention_and_sediment_control_at_construction_sites_in_Minnesota https://stormwater.pca.state.mn.us/index.php/Temporary_construction_erosion_and_sediment_control https://stormwater.pca.state.mn.us/index.php?title=Winter_construction_practices_for_site_stabilization,_erosion_prevention_and_sediment_control Using erosion control blankets during construction Erosion control blankets are durable and easy to install. Usually used on slopes during construction, these blankets help stabilize exposed soils and prevent seed from migrating off-site and downstream. Erosion control blankets contain three parts: netting, fill, and stitching. Blankets with biodegradable netting (also called “natural” blankets) are encouraged, as plastic netting can create trip and mowing hazards, entangle wildlife, and create plastic-debris pollution. To avoid these hazards, choose blankets that contain netting made from 100% biodegradable, non-plastic materials (e.g., jute, sisal, coir fiber). Avoid buying blankets listed as “photodegradable” or “poly jute.” An example of the proper use of an erosion control blanket during construction What construction activities require erosion and sediment control? Land-disturbing activities that require erosion and sediment control precautions include: • Construction activities associated with single or double-dwelling units that disturb more than 2,500 square feet of soil or exceed more than 10 cubic yards of cut or fill. This includes demolition, remodeling, additions, accessorial structures, landscaping/retaining walls, and new pools. • Construction of a new single or double-dwelling unit or activities determined by the City’s engineering staff to present substantial risk to neighboring private properties, public infrastructure, or waterways/wetlands. Using the right control devices, like the silt fences and erosion control logs, shown above, is a great way to keep sediment on site. Development Best Practices for Stormwater Control Erosion and Sediment Control during Construction The problem with sedimentation Sediment, caused by uncontrolled erosion, is the most common pollutant in our local waterbodies. It’s also a costly problem, causing $16 billion in environmental damage annually in the United States. In addition to polluting lakes and streams, erosion and sedimentation can: • Result in the loss of fertile topsoil. • Increase flooding by reducing stormwater pipe capacity. • Damage plant and animal life. • Create structural damage to buildings and roads. For more information on erosion and sediment control, contact the Engineering Department at 952-826-0371. Additional information can be found by visiting these resources: https://cfpub.epa.gov/npstbx/files/ksmo_sediment.pdf https://stormwater.pca.state.mn.us/index.php?title=General_principles_for_erosion_prevention_and_sediment_control_at_construction_sites_in_Minnesota https://stormwater.pca.state.mn.us/index.php/Temporary_construction_erosion_and_sediment_control https://stormwater.pca.state.mn.us/index.php?title=Winter_construction_practices_for_site_stabilization,_erosion_prevention_and_sediment_control The source of sedimentation While some sedimentation occurs with natural erosion, 70% is due to disturbances from changing land uses. The most concentrated sediment releases come from construction. This includes small home-building projects such as room additions, landscaping/retaining walls, or the installation of swimming pools. Sediment from loose soil during construction can run off-site. This often results in sediment buildup in the stormwater pipes, reducing the pipe’s capacity to convey water and potentially leading to flooding. Using the correct equipment and processes to control erosion and sedimentation on-site is important. Implementing the wrong process or product, as shown above, will fail to keep sediment on-site. Erosion and sediment control is important in any season! Controlling erosion and sediment on construction sites is important year round—not just during warm, rainy weather. Managing erosion and sediment during the winter can prevent problems during spring melt. You can start by proactively identifying areas that will be affected by concentrated flows during snow melt or winter rains and creating stabilized buffer zones along the perimeter of the property. A construction site with sediment issues during the snow season can still impact our waterways and stormwater infrastructure with intermittent melt during the winter and snow melt in the spring. Development Best Practices for Stormwater Control Erosion and Sediment Control during Construction The consequences of failing to maintain erosion and sediment control If erosion and sediment control measures fail, the City may temporarily suspend work on your site until remedial action is taken. If you do not address the situation, the City may take corrective measures, using your cash escrow to fund repairs to public property or remedy permit violations (City Code, section 10-110). The City of Edina requires you to show the erosion and sediment precautions you plan to take on your grading plan, site plan, or a stand-alone erosion and sediment control plan. For more specific information, please refer to the Edina Building Safety/Policy Information document found here: https://www.edinamn.gov/DocumentCenter/View/390/Erosion-and-Sediment-Control-for-Single-Double- Dwelling-Units-Policy-PDF For more information on erosion and sediment control, contact the Engineering Department at 952-826-0371. Additional information can be found by visiting these resources: https://cfpub.epa.gov/npstbx/files/ksmo_sediment.pdf https://stormwater.pca.state.mn.us/index.php?title=General_principles_for_erosion_prevention_and_sediment_control_at_construction_sites_in_Minnesota https://stormwater.pca.state.mn.us/index.php/Temporary_construction_erosion_and_sediment_control https://stormwater.pca.state.mn.us/index.php?title=Winter_construction_practices_for_site_stabilization,_erosion_prevention_and_sediment_control The plan above does a great job of clearly showing drainage patterns and how erosion and sediment control devices will protect the areas outside of the construction extents. In addition, this comprehensive plan: • Clearly defines drainage areas, including roof drainage. • Shows existing and proposed conditions and impervious surface calculations for both. • Shows drainage arrows and contours that are consistent and well-defined. • Shows the lowest opening elevation and elevations for the top of window wells that are higher than surrounding grade. • Includes a hydrocad summary. • Includes calculations for volume control and floodplain cut/fill. • Includes drainage notes for side yards DWELLING PROPOSED S1Minnetonka, Minnesota 55345Phone (952) 474-7964 17917 Highway No. 7 Web: www.advsur.com Advance Surveying & Engineering, Co. CLIENT/JOB ADDRESS SHEET TITLE SHEET NO. SHEET 1 OF 2201244 JR DRAWING NUMBER SHEET SIZE: 22 X 34 LEGAL DESCRIPTION:Lot 3, Block 8, Fairfax, Hennepin County, Minnesota. SCOPE OF WORK & LIMITATIONS:1.Showing the length and direction of boundary lines of the legal description listed above. The scope of our servicesdoes not include determining what you own, which is a legal matter. Please check the legal description with yourrecords or consult with competent legal counsel, if necessary, to make sure that it is correct and that any matters ofrecord, such as easements, that you wish to be included on the survey have been shown.2.Showing the location of observed existing improvements we deem necessary for the survey.3.Setting survey markers or verifying existing survey markers to establish the corners of the property.4.Showing and tabulating impervious surface coverage of the lot for your review and for the review of suchgovernmental agencies that may have jurisdiction over these requirements to verify they are correctly shown beforeproceeding with construction.5.Showing elevations on the site at selected locations to give some indication of the topography of the site. We havealso provided a benchmark for your use in determining elevations for construction on this site. The elevations shownrelate only to the benchmark provided on this survey. Use that benchmark and check at least one other feature shownon the survey when determining other elevations for use on this site or before beginning construction.6.This survey has been completed without the benefit of a current title commitment. There may be existing easementsor other encumbrances that would be revealed by a current title commitment. Therefore, this survey does notpurport to show any easements or encumbrances other than the ones shown hereon.7.While we show a proposed location for this home or addition, we are not as familiar with your proposed plans asyou, your architect, or the builder are. Review our proposed location of the improvements and proposed yard gradescarefully to verify that they match your plans before construction begins. Also, we are not as familiar with localcodes and minimum requirements as the local building and zoning officials in this community are. Be sure to showthis survey to said officials, or any other officials that may have jurisdiction over the proposed improvements andobtain their approvals before beginning construction or planning improvements to the property.8.Note that all building dimensions and building tie dimensions to the property lines, are taken from the siding and orstucco of the building.9.While we show the building setback lines per the City of Edina web site, we suggest you show this survey to theappropriate city officials to be sure that the setback lines are shown correctly. Do this BEFORE you use this surveyto design anything for this site. STANDARD SYMBOLS & CONVENTIONS: "●" Denotes iron survey marker, found, unless otherwise noted. EXISTING HARDCOVER HOUSE 1,386 SQ. FT.SHED 121 SQ. FT.DRIVEWAY 615 SQ. FT.COVERED PORCH 146 SQ. FT. TOTAL EXISTING HARDCOVER 2,268 SQ. FT. AREA OF LOT 6,766 SQ. FT. LOT COVERAGE 33.5% EXISTING BUILDING COVERAGE HOUSE 1,386 SQ. FT.SHED 121 SQ. FT.COVERED PORCH 146 SQ. FT. TOTAL EXISTING COVERAGE 1,653 SQ. FT. AREA OF LOT 6,766 SQ. FT. LOT COVERAGE 24.4% # LICENSE NO. DATE OCTOBER 14, 2020 DATE DRAFTED:OCTOBER 14, 2020# 52716Joshua S. Rinke JUNE 16, 2020DATE SURVEYED: SURVEYED BY ADVANCE SURVEYING. & ENG., CO. DRAWING ORIENTATION & SCALE 20'10'0 1 INCH = 10 FEET PROPOSED SURVEY &TREE PRESERVATION PLAN GRADING & EROSION CONTROL NOTES: BEFORE DEMOLITION AND GRADING BEGIN·Install silt fence/bio roll around the perimeter of the construction area. ·Sediment control measures must remain in place until final stabilization has beenestablished and then shall be removed. Sediment controls may be removed toaccommodate short term construction activity but must be replaced before the nextrain. ·A temporary rock construction entrance shall be established at each access point tothe site and a 6 inch layer of 1 to 2 inch rock extending at least 50 feet from thestreet into the site and shall be underlain with permeable geotextile fabric. Theentrance shall be maintained during construction by top dressing or washing toprevent tracking or flow of sediments onto public streets, walks or alleys. Potentialentrances that are not so protected shall be closed by fencing to prevent unprotectedexit from the site. ·Contractor shall install inlet protection on all existing storm sewer inlets inaccordance with the city standard details. Inlet protection shall also be provided onall proposed storm sewer inlets immediately following construction of the inlet.Inlet protection must be installed in a manner that will not impound water forextended periods of time or in a manner that presents a hazard to vehicular orpedestrian traffic. DURING CONSTRUCTION:·When dirt stockpiles have been created, a double row of silt fence shall be placed toprevent escape of sediment laden runoff and if the piles or other disturbed areas areto remain in place for more than 14 days, they shall be seeded with MinnesotaDepartment of Transportation Seed Mixture 22-111 at 100 lb/acre followed bycovering with spray mulch. ·A dumpster shall be placed on the site for prompt disposal of construction debris.These dumpsters shall be serviced regularly to prevent overflowing and blowingonto adjacent properties. Disposal of solid wastes from the site shall in accordancewith Minnesota Pollution Control Agency requirements. ·A separate container shall be placed for disposal of hazardous waste. Hazardouswastes shall be disposed of in accordance with MPCA requirements. ·Concrete truck washout shall be in the plastic lined ditch and dispose of washings assolid waste. ·Sediment control devices shall be regularly inspected and after major rainfall eventsand shall be cleaned and repaired as necessary to provide downstream protection. ·Streets and other public ways shall be inspected daily and if litter or soils has beendeposited it shall promptly be removed. ·If necessary, vehicles, that have mud on their wheels, shall be cleaned before exitingthe site in the rock entrance areas ·Moisture shall be applied to disturbed areas to control dust as needed. ·Portable toilet facilities shall be placed on site for use by workers and shall beproperly maintained. ·If it becomes necessary to pump the excavation during construction, pump dischargeshall be into the stockpile areas so that the double silt fence around these areas canfilter the water before it leaves the site. ·Temporary erosion control shall be installed no later than 14 days after the site isfirst disturbed and shall consist of broadcast seeding with Minnesota Department ofTransportation Seed Mixture 22-111 at 100 lb/acre followed by covering with spraymulch. ·Erosion control measures shown on the erosion control plan are the absoluteminimum. The contractor shall install temporary earth dikes, sediment traps orbasins and additional silt fencing as deemed necessary to control erosion. SITE WORK COMPLETION:·When final grading has been completed but before placement of seed or sod an “asbuilt” survey shall be done per City of Edina requirements to insure that gradingwas properly done. ·When any remedial grading has been completed, sod or seeding shall be completedincluding any erosion control blankets for steep areas. ·When turf is established, silt fence and inlet protection and other erosion controldevices shall be disposed of and adjacent streets, alleys and walks shall be cleanedas needed to deliver a site that is erosion resistant and clean. ·Contractor shall maintain positive drainage of a minimum 2% slope away fromproposed building. PROPOSED BUILDING COVERAGE HOUSE 1,944 SQ. FT.DECK 146 SQ. FT.FRONT PORCH 84 SQ. FT.DECK CREDIT -146 SQ. FT. TOTAL PROPOSED COVERAGE 2,028 SQ. FT. AREA OF LOT 6,766 SQ. FT. LOT COVERAGE 29.9% PROPOSED HARDCOVER HOUSE 1,944 SQ. FT.DECK 146 SQ. FT.FRONT PORCH 84 SQ. FT.FRONT WALK 58 SQ. FT.DRIVEWAY 743 SQ. FT. TOTAL PROPOSED HARDCOVER 2,975 SQ. FT. AREA OF LOT 6,766 SQ. FT. LOT COVERAGE 43.9% DWELLING PROPOSEDP1 E1 S2Minnetonka, Minnesota 55345Phone (952) 474-7964 17917 Highway No. 7 Web: www.advsur.com AdvanceSurveying & Engineering, Co. CLIENT/JOB ADDRESS SHEET TITLE SHEET NO. SHEET 2 OF 2201244 JR DRAWING NUMBER SHEET SIZE: 22 X 34 #LICENSE NO. DATEOCTOBER 14, 2020 DATE DRAFTED:OCTOBER 14, 2020# 52716Joshua S. Rinke JUNE 16, 2020DATE SURVEYED: SURVEYED BY ADVANCE SURVEYING. & ENG., CO. DRAWING ORIENTATION & SCALE 20'10'0 1 INCH = 10 FEET PROPOSED STORMWATERMANAGEMENT PLAN PROPOSED DRAINAGE MAP EXISTING DRAINAGE MAP E1 P1 10-YEAR STORM EVENT EXISTING DISCHARGE (CFS) STORMWATER RUNOFF RATE SUMMARY 0.23 PROPOSED DISCHARGE (CFS) STORMWATER REQUIREMENTS 0.26 FLOODPLAIN STORAGE VOLUME REQUIREMENT · ·