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SW PPP_1_PROJ_INFO_MAP dwg 8/20/2024 4 06 30 PM
<br />Information contained in this SWPPP narrative sheet summarizes requirements of the GENERAL PERMIT AUTHORIZATION TO
<br />DISCHARGE STORMWATER ASSOCIATED WITH CONSTRUCTION ACTIVITY UNDER THE NATIONAL POLLUTANT DISCHARGE
<br />ELIMINATION SYSTEM/STATE DISPOSAL SYSTEM PROGRAM - Permit No: MN RI00001 (Permit) as they apply to this project. All
<br />provisions of the Permit including those not specifically cited herein shall apply to this project. The Contractor is responsible to be
<br />familiar with and comply with all conditions of the permit. The full text of the Permit is available at:
<br />https://www.pca.state. mn.us/sites/defa ult/fi Ies/wq-strm2-80a.pdf
<br />SWPPP AMENDMENTS AND SUBMITTALS
<br />Contractor must prepare and submit to the Engineer a SWPPP amendment as necessary to include additional Best Management
<br />Practices (BMPs) to correct problems identified or address the following situations.
<br />1. Contact information and training documentation for Construction SWPPP Manager and BMP Installer,
<br />2. There is a change in construction method of phasing, operation, maintenance, weather or seasonal conditions not
<br />anticipated during the design of the SWPPP including but not limited to:
<br />a. Types and/or Locations of BMPs
<br />b. Material Storage and Spill Response
<br />c. Fueling Plans
<br />d. Locations for Stockpiles, Concrete Washout, and Sanitation Facilities and
<br />e. Project Phasing
<br />3. It is determined that the SWPPP is not achieving objectives of minimizing pollutants in stormwater discharges associated with
<br />construction activity, or
<br />4. The SWPPP is not consistent with the terms and conditions of the permit.
<br />The Contractor may implement SWPPP amendments immediately and is not required to wait for Engineer review of the submittal.
<br />The responsibility for completeness of SWPPP amendments and compliance with the Permit lies with the Contractor. Review,
<br />comment, or lack of comment by the Engineer on a SWPPP amendment shall not absolve the responsibilities of the Contractor in
<br />any way.
<br />If a change order is issued for a design change the SWPPP amendment will be prepared by the Engineer and included in the
<br />change order.
<br />In addition to SWPPP amendments, the Contractor shall submit to the Engineer Weekly Erosion and Sediment Control Schedule
<br />meeting the requirements of MnDOT 1717.
<br />The Contractor shall keep copies of all SWPPP amendments, Weekly Erosion and Sediment Control Schedules, inspection logs, and
<br />maintenance logs with the field copy of the SWPPP. A PDF copy of these documents will be provided along with a copy of the
<br />final Field Copy of the SWPPP to the Engineer along with the signed Notice of Termination when final stabilization is complete.
<br />EROSION PREVENTION PRACTICES
<br />Stormwater conveyance channels shall be routed around unstabilized areas. Erosion controls and velocity dissipation devices
<br />shall be used at outlets within and along the length of any constructed conveyance channel.
<br />The normal wetted perimeter of all ditches or swales, including storm water management pond slopes, that drain waters from the
<br />site must be stabilized within 200' of any property edge or discharge point, including storm sewer inlets, within 24 hours of
<br />connection.
<br />Temporary or permanent ditches or swales used as sediment containment during construction do not need to be stabilized during
<br />temporary period of use and shall be stabilized within 24 hours after no longer used as sediment containment.
<br />Mulch, hydromulch, tackifier, or similar practice shall not be used in any portion of the wetted perimeter of a temporary or
<br />permanent drainage ditch or swale section with a continuous slope of greater than 2 percent.
<br />Energy dissipation shall be installed at all temporary or permanent pipe outlets within 24 hours of connection to a surface water
<br />or permanent stormwater treatment system.
<br />The Contractor shall phase construction and use construction methods to the extent practical to minimize exposed soils. The
<br />project phasing shall be documented in the Weekly Erosion and Sediment Control Schedule.
<br />SEDIMENT CONTROL PRACTICES
<br />Down gradient BMPs including perimeter BMPs must be in place before up gradient land- disturbing activities begin and shall
<br />remain in place until final stabilization.
<br />All BMPs that have been adjusted or removed to accommodate short-term activities shall be re -installed or replaced the earlier of
<br />the end of the work day or before the next precipitation event even if the activity is not complete.
<br />Inlet BMPs may be removed for specific safety concerns. The BMPs shall be replaced as soon as the safety concern is resolved.
<br />The removal shall be documented in the SWPPP as a SWPPP amendment.
<br />Temporary stockpiles must have sediment control BMPs. The Contractor shall prepare and submit to the Engineer a SWPPP
<br />amendment showing the location of temporary stockpiles and the BMPs for each stockpile. The SWPPP amendment must meet
<br />the minimum requirements of Section 9 of the Permit.
<br />Soil compaction shall be minimized and topsoil shall be preserved, unless infeasible or if construction activities dictate soil
<br />compaction or topsoil stripping.
<br />The use of polymers, flocculants, or other sedimentation treatment chemicals are not proposed as part of this SWPPP as designed
<br />by the Engineer. If methods or phasing of construction require the use of any of these chemicals, the Contractor shall prepare and
<br />submit to the Engineer a SWPPP amendment that meets the minimum requirements of Section 9 of the Permit.
<br />TEMPORARY SEDIMENTATION BASINS
<br />A temporary sedimentation basin has not been included in this SWPPP as designed by the Engineer. If a basin is later determined
<br />to be desirable or necessary the Contractor shall prepare and submit to the Engineer a SWPPP amendment. Temporary
<br />sedimentation basins shall meet or exceed the minimum requirements of Section 14 of the Permit and shall include a basin
<br />draining plan meeting or exceeding the minimum requirements of Section 10 of the Permit. Where the site discharges to Special
<br />and/or Impaired Waters the SWPPP amendment shall also meet or exceed the minimum requirements of Section 23 of the
<br />permit.
<br />DEWATERING
<br />A dewatering plan has not been included in this SWPPP as designed by the Engineer. If dewatering is required for this project, the
<br />Contractor shall prepare and submit to the Engineer a SWPPP amendment. All dewatering shall meet or exceed the minimum
<br />requirements of Section 10 of the Permit.
<br />POLLUTION PREVENTION
<br />Products and materials that have the potential to leach pollutants that are stored on the site must be stored in a manner designed
<br />to minimize contact with stormwater. Materials that are not a source of potential contamination to stormwater or that are
<br />designed for exposure to stormwater are not required to be covered.
<br />Hazardous materials including but not limited to pesticides, fertilizer, petroleum products, curing compounds and toxic waste
<br />must be properly stored and protected from stormwater exposure as recommended by the manufacturer in an access restricted
<br />area.
<br />Solid waste must be stored, collected and disposed of in compliance with Minnesota Administrative Rules Chapter 7035.
<br />Portable toilets must be positioned so that they are secure and will not be tipped or knocked over. Sanitary waste must be
<br />disposed of properly in accordance with Minn. R. CH 7041.
<br />Exterior vehicle or equipment washing on the project site shall be limited to a defined area of the site. No engine degreasing is
<br />allowed on site. A sign must be installed adjacent to each washout facility that requires site personnel to utilize the proper
<br />facilities for disposal of concrete and other washout wastes.
<br />The Contractor shall prepare and submit a SWPPP amendment detailing the location and BMPs proposed for storage of materials,
<br />solid waste, portable toilets, and exterior vehicle or equipment washing on the site. The SWPPP amendment shall include a spill
<br />prevention and response plan that is appropriate for the materials proposed to be on the site. The SWPPP amendment shall meet
<br />or exceed the minimum requirements of Section 12 of the Permit.
<br />INSPECTION & MAINTENANCE
<br />A trained person shall routinely inspect the entire construction site at the time interval indicated on this sheet of the SWPPP
<br />during active construction and within 24-hours after a rainfall event greater than 0.5 inches in 24 hours. Following an inspection
<br />that occurs within 24-hours after a rainfall event, the next inspection must be conducted at the time interval indicated in the
<br />Receiving Waters Table found on the SITE PLAN AND INFORMATION SHEET of the SWPPP.
<br />All inspections and maintenance conducted during construction must be recorded on the day it is completed and must be retained
<br />with the SWPPP. Inspection report forms are available in the Project Specifications. Inspection report forms other than those
<br />provided shall be approved by the engineer.
<br />The Contractor may request a change in inspection schedule for the following conditions:
<br />a. Inspections of areas with permanent cover to be reduced to once per month,
<br />b. Inspections of areas that have permanent cover and have had no construction activity for 12 months to be suspended
<br />until construction resumes,
<br />c. Inspections of areas where construction is suspended due to frozen ground conditions, inspections to be suspended until
<br />the earlier of within 24 hours of runoff occurring, or upon resuming construction.
<br />No change in inspection schedule shall occur until authorized by the Engineer.
<br />Inspections must include:
<br />1. All erosion prevention and sediment control BMPs and Pollution Prevention Management Measures to ensure integrity and
<br />effectiveness.
<br />2. Surface waters, including drainage ditches and conveyance systems for evidence of erosion and sediment deposition.
<br />3. Construction site vehicle exit locations, streets and curb and gutter systems within and adjacent to the project for
<br />sedimentation from erosion or tracked sediment from vehicles.
<br />4. Infiltration areas to ensure that no sediment from ongoing construction activity is reaching the infiltration area and that
<br />equipment is not being driven across the infiltration area.
<br />All non-functioning BMPs and those BMPs where sediment reaches one-half (1/2) of the depth of the BMP, or in the case of
<br />sediment basins one-half (1/2) of the storage volume, must be repaired, replaced, or supplemented by the end of the next
<br />business day after discovery, or as soon as field conditions allow.
<br />Permittees must repair, replace or supplement all nonfunctional BMPs with functional BMPs by the end of the next business day
<br />after discovery, or as soon as field conditions allow.
<br />Any sediment that escapes the site must be removed and the area stabilized within 7 calendar days of discovery unless precluded
<br />by legal, regulatory, or physical access in which case the work shall be completed within 7 calendar days of authorization. Paved
<br />surfaces such as streets shall have any escaped or tracked sediment removed by the end of the day that it is discovered.
<br />Sediment release, other than paved surfaces that can be cleaned up with street sweeping shall be reported immediately upon
<br />discovery to the Engineer.
<br />PUBLIC WATER RESTRICTIONS:
<br />For public waters that have been promulgated "work in water restrictions" during fish spawning time frames, all exposed soil
<br />areas that are within 200 feet of the water's edge, and drain to these waters must complete stabilization within 24-hours during
<br />the time period. MN DNR permits are not valid for work in waters that are designated as infested waters unless accompanied by
<br />an Infested Waters Permit or written notification has been obtained from MN DNR stating that such permit is not required. There
<br />is no exception for pre-existing permits. If a MN DNR Permit has been issued for the project and the water is later designated as
<br />infested, the Contractor shall halt all work covered by the MN DNR Permit until an Infested Waters Permit is obtained or that
<br />written notification is obtained stating that such permit is not required.
<br />FINAL STABILIZATION
<br />Final Stabilization is not complete until all the following requirements have been met:
<br />1. Substantial Completion has been reached and no ground disturbing activities are anticipated.
<br />2. Permanent cover has been installed with an established minimum uniform perennial vegetation density of 70 percent of its
<br />expected final growth. Vegetation is not required in areas where no vegetation is proposed by this project such as
<br />impervious surfaces or the base of a sand filter.
<br />3. Accumulated sediment has been removed from all permanent stormwater treatment systems as necessary to ensure the
<br />system is operating as designed.
<br />4. All sediment has been removed from conveyance systems
<br />5. All temporary synthetic erosion prevention and sediment control BMPs have been removed. BMPs designated on the SWPPP
<br />to remain to decompose on -site may remain.
<br />6. For residential construction only, permit coverage terminates on individual lots if the structures are finished and temporary
<br />erosion prevention and downgradient perimeter control is complete, the residence sells to the homeowner, and the
<br />permittee distributes the MPCA's "Homeowner Fact Sheet" to the homeowner.
<br />7. For agricultural land only (e.g., pipelines across cropland), the disturbed land must be returned to its preconstruction
<br />agricultural use prior to submitting the NOT.
<br />SITE STABILIZATION COMPLETION:
<br />Stabilization of exposed soils shall begin immediately and shall be
<br />completed after the construction activity has temporarily or
<br />permanently ceased no later than:
<br />7 calendar days
<br />SITE INSPECTION INTERVAL:
<br />A trained person shall routinely inspect the entire construction
<br />site during active construction at an interval of no more than:
<br />7 calendar days
<br />SPECIAL ENVIRONMENTAL CONSIDERATIONS AND PERMITS:
<br />1)
<br />Was an environmental review required for this project or any part of a common plan of development
<br />or sale that includes all or any portion of this project?
<br />NO
<br />2)
<br />Does any portion of the site have the potential to affect threatened or endangered species or their
<br />critical habitat?
<br />NO
<br />3)
<br />Does any portion of this site discharge to a Calcareous fen.
<br />NO
<br />4)
<br />Will any portion of the site potentially affect properties listed on the National Register of Historic Places
<br />or a known or discovered archeological site?
<br />NO
<br />5)
<br />Have any Karst features have been identified in the project vicinity?
<br />NO
<br />6)
<br />Is compliance with temporary or permanent stormwater management design requirements infeasible
<br />for this project?
<br />NO
<br />7)
<br />Has the MN DNR promulgated "work in water restrictions" for any Public Water this site disharges to
<br />during fish spawning?
<br />NO
<br />TYPE OF PERMIT
<br />PERMITTING AGENCY
<br />PERMIT STATUS AND CONDITIONS
<br />Construction Stormwater NPDES
<br />MPCA
<br />Contractor Obtained
<br />Watershed
<br />LRRWMO
<br />In Progress
<br />Dewatering
<br />MnDNR
<br />Contractor Obtained
<br />SWPPP DESIGNER TRAINING DOCUMENTATION:
<br />UNIVERSITY OF MINNESOTA
<br />Timothy Haugo
<br />Design of Construction SWPPP (May 31 2025)
<br />I HEREBY CERTIFY THAT THIS PLAN, SPECIFICATION, OR REPORT WAS PREPARED
<br />BY ME OR UNDER MY DIRECT SUPERVMON AND THAT I AM A DULY LICENSED
<br />PROFESSIONAL ENGINEER UNDER THE LAWS OF THE STATE OF MINNESOTA
<br />EVIN P. KIELB
<br />LIC
<br />0 23211
<br />8/20/2024
<br />BOLTON
<br />& MENK
<br />7533 SU N WOOD DR NW, SUITE 206
<br />RAMSEY, MN 55303
<br />Phone: (763) 433-2851
<br />Email: Ramsey@ bolton-menk.com
<br />www.bolton-menk.com
<br />DESIGNED ZFL
<br />NO
<br />ISSUED FOR
<br />DATE
<br />DRAWN TJH
<br />CITY OF RAMSEY, MINNESOTA
<br />CHECKED KPK
<br />RIVERS BEND REGIONAL STORMWATER IMPROVEMENTS
<br />CLIENT PRO1 NO
<br />STORM WATER POLLUTION PREVENTION NARRATIVE
<br />SHEET
<br />9
<br />OF
<br />12
<br />Os
<br />DATE
<br />CP 25-01
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