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GENERAL SWPPP REQUIREMENTS AND NOTES:
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<br /> SWPPP AMENDMENTS (SECTION 6): TEMPORARY SEDIMENT CONTROL PRACTICES (SECTION 9) INSPECTIONS AND MAINTENANCE (SECTION 11) PERMIT TERMINATION (SECTIONS 4 AND 13) LO
<br /> 1. One of the individuals described in item 21.2.a or 21.2.b of the permit or another qualified 1. Sediment control practices must be established on all down gradient perimeters and be located 1. Owner and Contractor shall ensure that a trained person (as identified in item 21.2.b) of the permit will 1. Permittees must submit a NOT within 30 days after all termination conditions listed in Section 13 (Loo 0 Q
<br /> individual must complete all SWPPP changes. Changes involving the use of less stringent BMPs upgradient of any buffer zones. The perimeter sediment control practices must be in place before inspect the entire construction site at a minimum: are complete. O •i o 0
<br /> must include a justification describing how the replacement BMP is effective for the site any upgradient land-disturbing activities begin. These practices shall remain in place until Final - Once every seven (7) days during active construction, and J C,:)
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<br /> characteristics. Stabilization has been established. -Within 24 hours after a rainfall event greater than 1/2 inch in 24 hours 2. Permittees must submit a NOT within 30 days after selling or otherwise legally transferring the L
<br /> 2. The SWPPP shall be amended to include additional or modified BMPs as necessary to correct entire site, including permit responsibility for roads (e.g., street sweeping)and stormwater L a -o ai a? UO)
<br /> problems identified or address situations whenever there is a change in design, construction, 2. If downgradient sediment controls become overloaded, based on frequent failure or excessive 2. Inspect all erosion prevention and sediment control BMPs and Pollution Prevention Management infrastructure final clean out, or transferring portions of a site to another party. The permittees' /� '- _ CO00 �
<br /> operation, maintenance, weather or seasonal conditions having a significant effect on the maintenance requirements, additional upgradient sediment control practices or redundant BMPs Measures to ensure integrity and effectiveness during all routine and post-rainfall event inspections. All coverage under the permit terminates at midnight on the submission date of the NOT. \V =_
<br /> discharge of pollutants to surface waters or groundwater. shall be installed to eliminate the overloading concerns. All changes shall be recorded in the nonfunctional BMPs must be repaired, replaced, or supplemented with functional BMPs by the end of the LO 3
<br /> 3. The SWPPP shall be amended to include additional or modified BMPs as necessary to correct SWPPP. next business day after discovery, or as soon as field conditions allow access unless another time frame 3. Permittees may terminate permit coverage prior to completion of all construction activity if they
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<br /> is specified below. Investigate and comply with the following Inspection and Maintenance requirements: meet all of the following conditions: N
<br /> problems identified or address situations whenever inspections or investigations by the site owner o
<br /> or operator, USEPA or MPCA officials indicate the SWPPP is not effective in eliminating or 3. Temporary or permanent drainage ditches and sediment basins designed as part of a sediment a. Construction activity has ceased for at least 90 days; and
<br /> significnatly minimizing the ischarge of pollutants to surface waters or groundwater or the
<br /> containment system (e.g., ditches with rock-check dams) require sediment control practices only a. All perimeter control devices must be repaired, replaced, or supplemented when they become b. at least 90 percent (by area) of all originally proposed construction activity has been completed
<br /> discharges are cuasing water quality standard exceedances (e.g., nuisance conditions as defined as appropriate for site conditions. nonfunctional or the sediment reaches one-half(1/2)of the height of the device. These repairs must and permanent cover has been established on those areas; and
<br /> in Minn. R. 7050.0210, subp. 2 or the SWPPP is not consistend with the ofjectives of the USEPA be made by the end of the next business day after discovery, or thereafter as soon as field conditions c. on areas where construction activity is not complete, permanent cover has been established;
<br /> approved TMDL. 4. A floating silt curtain placed in the water is not an acceptable sediment control BMP except when allow access. and r 1
<br /> working on a shoreline or below the waterline. Immediately after construction activity (e.g., b. Temporary and permanent sedimentation basins must be drained and the sediment removed when d. the site complies with items 13.3 through 13.7 of the permit. v O
<br /> installation of rip rap along the shoreline) in that area is complete, upland perimeter control the depth of sediment collected in the basin reaches one-half(1/2)the storage volume. Drainage and J �
<br /> BMP SELECTION AND INSTALLATION (SECTION 7): practices shall be installed if exposed soils still drain to a surface water. removal must be completed within 72 hours of discovery, or as soon as field conditions allow access. After permit coverage is terminated under this item, any subsequent development on the remaining
<br /> c. Inspect and photograph dewatering discharges at the beginning and at least once every 24 hours portions of the site will require permit coverage if the subsequent development itself or as part of J LLI
<br /> 1. All BMPs identified in the SWPPP document and construction plans shall be selected, installed, 5. Re-install all sediment control practices that have been adjusted or removed to accommodate during operation. the remaining common plan of development or sale will result in land disturbing activity of one (1) ~ �
<br /> and maintained in an appropriate and functional manner in accordance with relevant manufacturer short-term activities such as clearing or grubbing, or passage of vehicles, immediately after the d. Surface waters, including drainage ditches and conveyance systems, must be inspected for evidence or more acres in size. 00
<br /> specifications and accepted engineering practices. short-term activity has been completed. Complete any short-term activity that requires removal of of erosion and sediment deposition during each inspection. Remove all deltas and sediment U) LO
<br /> 2. Do not disturb more land (i.e., phasing)than can be effectively inspected and maintained in sediment control practices as quickly as possible and re-install sediment control practices before deposited in surface waters, including drainage ways, catch basins, and other drainage systems, and 4. Permittees may terminate coverage upon MPCA approval after submitting information Z 0 LO
<br /> accordance with Section 11. the next precipitation event even if the short-term activity is not complete. restabilize the areas where sediment removal results in exposed soil. The removal and stabilization documenting the owner canceled the project. > Z
<br /> must take place within seven (7) days of discovery unless precluded by legal, regulatory, or physical w J 2
<br /> TEMPORARY EROSION PREVENTION PRACTICES (SECTION 8) 6. All storm drain inlets must be protected by appropriate BMPs during construction until all sources access constraints. Use all reasonable efforts to obtain access. If precluded, removal and stabilization 5. Permittees must complete all construction activity and must install permanent cover over all areas m
<br /> with potential for discharging to the inlet have been stabilized. Inlet protection may be removed for must take place within seven (7) calendar days of obtaining access. Contact all local, regional, state prior to submitting the NOT. Vegetative cover must consist of a uniform perennial vegetation with a 2 0� 0�
<br /> a particular inlet if a specific safety concern (street flooding/freezing) has been identified by the and federal authorities and receiving any applicable permits, prior to conducting any work in surface density of 70 percent of its expected final growth. Vegetation is not required where the function of a LLJ LU
<br /> 1. Prior to beginning any construction work at the site, locations of areas not to be disturbed must be
<br /> delineated inns with flags, stakes, signs, silt fence, snow fence, etc.)throughout the project site. Permittee(s) or the jurisdictional authority (e.g., city/cou nty/township/M n DOT engineer).The waters. specific area dictates no vegetation, such as impervious surfaces or the base of a sand filter. w I_ Q
<br /> Permittee(s) must document the need for removal in the SWPPP. e. Construction site vehicle exit locations must be inspected for evidence of off-site sediment tracking Z
<br /> 2. Minimize the need for disturbance of portions of the project with steep slopes. For those sloped onto paved surfaces. Tracked sediment must be removed from all paved surfaces both on and off site 6. Permittees must clean the permanent stormwater system of any accumulated sediment and must O r n J >J
<br /> areas which must be disturbed, use techniques such as phasing and stabilization practices 7. Temporary soil stockpiles must have silt fence or other effective sediment controls, and cannot be within 24 hours of discovery, or if applicable, within a shorter time. ensure the system meets all applicable requirements in Section 15 through 19 of the permit and is
<br /> designed for steep slopes e. slope draining and terracin placed in any natural buffers or surface waters, including stormwater conveyances such as curb f. Streets and other areas adjacent to the project must be inspected for evidence of off-site operating as designed. Q
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<br /> and gutter systems, or conduits and ditches unless there is a bypass in place for the stormwater. accumulations of sediment. If sediment is present, it must be removed in a manner and at a frequency 1 Z w Cn
<br /> 3. Stabilize all exposed soil areas (including stockpiles). Stabilization must be initiated immediately to sufficient to minimize off-site impacts (e.g., fugitive sediment in streets could be washed into storm 7. Permittees must remove all sediment from conveyance systems prior to submitting the NOT. v 0
<br /> limit soil erosion whenever any construction activity has permanently or temporarily ceased on any 8. Where vehicle traffic leaves any part of the site (or onto paved roads within the site) install a sewers by the next rain and/or pose a safety hazard to users of public streets). D
<br /> portion of the site and will not resume for a period exceeding 14 calendar days (or 7 days if within vehicle tracking BMP to minimize the track out of sediment from the construction site. Examples of 8. Permittees must remove all temporary synthetic erosion prevention and sediment control BMPs < ti
<br /> one mile of an identified impaired water). Stabilization must be completed no later than 14 vehicle tracking BMPs include (but are not limited to) rock pads, mud mats, slash mulch, concrete 5. Inspection frequency adjustment: prior to submitting the NOT. BMPs designed to decompose on-site may be left in place. a C.0
<br /> calendar days (or 7 days if within one mile of an identified impaired water)after the construction or steel wash racks, or equivalent systems. Use street sweeping if such vehicle tracking BMPs are a. Inspections of areas with permanent cover can be reduced to once per month, even if construction c�
<br /> activity has ceased. not adequate to prevent sediment from being tracked onto the street. activity continues on other portions of the site; or 9. For residential construction only, permit coverage terminates on individual lots if the structures are U)
<br /> b. where sites have permanent cover on all exposed soil and no construction activity is occurring finished and temporary erosion prevention and downgradient perimeter control is complete, the Z
<br /> 4. Stabilization is not required on constructed base components of roads, parking lots, and similar 9. The Permittee(s) must install temporary sedimentation basins as required in accordance with anywhere on the site, inspections can be reduced to once per month and, after 12 months, may be residence sells to the homeowner, and the permittee distributes the MPCA's "Homeowner Fact
<br /> surfaces. Stabilization is not required on temporary stockpiles without significant silt, clay or permit requirements. suspended completely until construction activity resumes. The MPCA may require inspections to Sheet"to the homeowner. O
<br /> organic components (e.g., clean aggregate stockpiles, demolition concrete stockpiles, sand resume if conditions warrant; or
<br /> stockpiles) but sediment controls must be placed at the base of the stockpile. 10.Minimize soil compaction by restricting vehicle access in areas where final vegetative stabilization c. where construction activity has been suspended due to frozen ground conditions, inspections may be 10.For construction projects on agricultural land (e.g., pipelines across cropland), disturbed land must
<br /> will occur, unless otherwise infeasible. suspended. Inspections must resume within 24 hours of runoff occurring, or upon resuming be returned to its preconstruction agricultural condition prior to submitting the NOT. n/
<br /> 5. For Public Waters that the Minnesota Department of Natural Resources has promulgated "work in construction, whichever comes first. O
<br /> water restrictions" during specified fish spawning time frames, all exposed soil areas that are within 11.Discharges from BMPs shall be directed to vegetated areas unless infeasible. 11.When submitting the NOT, permittees must include either ground or aerial photographs showing
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<br /> the watdurier's edge, and drain to these waters must complete the stabilization activities 3. All inspections and maintenance activities within 24 hours of being conducted must be recorded and vegetative cover requirements have been met as listed above. All submitted photographs shall LL 0 �/'�
<br /> within 24 hours during the restriction period. 12.Preserve a 50 foot natural buffer or(if a buffer is infeasible on the site) provide redundant (double) retained in the SWPPP. These records must include: include the date and specific site location. U)
<br /> perimeter sediment controls when a surface water is located within 50 feet of the project's earth a. Date and time of inspections '^
<br /> 6. Stabilize the normal wetted perimeter of the last 200 linear feet of temporary or permanent disturbances and stormwater flows to the surface water. b. Name of person(s) conducting inspections �J, M
<br /> drainage ditches or swales that drain water from the site within 24 hours after connecting to a c. Findings of inspections, including the specific location where corrective actions are needed O W Z O
<br /> surface water or property edge. Stabilize remaining portions of temporary or permanent ditches or 13.Perimeter sediment controls shall be installed at least 5 feet apart unless limited by lack of d. Corrective actions taken (including dates, times, and party completing maintenance activities) Z UJ
<br /> p p Y g g p p Y p LONG TERM OPERATION AND MAINTENANCE: �
<br /> swales within 14 calendar days (or 7 days if within one mile of an identified impaired water)after available space. Natural buffers are not required adjacent to road ditches,judicial ditches, county e. Date and amount of all rainfall events greater than 1/2 inch (0.5 inches) in 24 hours. Rainfall amounts3:ditches, stormwater conveyance channels, storm drain inlets, and sediment basins. If preserving must be obtained b a properly maintained rain gauge installed onsite, a weather station that is within 2 Z
<br /> connecting to a surface water or property edge and construction in that portion of the ditch y p g Y p P Y 9 g 1. Upon the completion of construction activity and NPDES permit termination, in accordance with �
<br /> temporarily or permanently ceases. the buffer is infeasible, the reasons for which shall be recorded in the SWPPP. 1 mile of your location or a weather reporting system that provides site specific rainfall data from radar
<br /> summaries. Sections 4 and 13, the Property Owner shall become the responsible party for long term operation J O
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<br /> 14.The use of polymers, flocculants, or other sedimentation treatment chemicals, if used on the f. If an discharge is observed to be occurring during the inspection, a record of all points of thepropertyand maintenance (O&M)of all permanent stormwater management features under this project.
<br /> 7. Temporary or permanent ditches or swales being used as sediment containment systems during p y Y 9 9 9 p p
<br /> construction (with properly designed rock-ditch checks, bio rolls, silt dikes, etc.) do not need to be project, shall be used in accordance with accepted engineering practices, dosing specifications, from which there is a discharge must be made, and the discharge should be described (i.e., color, �J
<br /> and sediment removal design specifications provided b the product manufacturer or supplier. Use odor, floating, settled, or suspended solids, foam, oil sheen, and other obvious indicators of pollutants) 2. All associated operations, inspections, maintenance, and record keeping shall be performed by Q
<br /> stabilized during the temporary period of use as a sediment containment system. These areas g p p y p pp g° p p )
<br /> must be stabilized within 24 hours after no longer being used for as a sediment containment conventional erosion and sediment controls prior to the chemical addition to ensure effective and photographed. trained individual(s)familiar with the site stormwater management system.
<br /> system. treatment. Chemicals may only be applied where treated stormwater is directed to a sediment g. Any amendments to the SWPPP proposed as a result of the inspection must be documented within
<br /> control system which allows or filtration of settlement of the floc prior to discharge. seven (7) calendar days. 3. Record keeping of inspections and maintenance items shall be maintained by the Owner in v�
<br /> accordance with applicable Maintenance Agreements/Declarations as required by local I..n�o
<br /> 8. Applying mulch, hydromulch, tackifier, polyacrylamide or similar erosion prevention practices is not jurisdictional authorities.
<br /> acceptable within any portion of the normal wetted perimeter of a temporary or permanent 15.If the proposed project as shown on the plans has 10 or more acres draining to a common location 4. All infiltration areas must be inspected to ensure that no sediment from ongoing construction activity is
<br /> drainage ditch or swale section with a continuous slope of greater than 2 percent. or 5 acres or more if the site is within one mile of a special or impaired water(as identified in reaching the infiltration area. All infiltration areas must be inspected to ensure that equipment is not being U)
<br /> Section II - Receiving Waters and Environmentally Sensitive Areas), then a temporary sediment driven across the infiltration area. a;
<br /> 9. Pipe outlets must be provided with temporary or permanent energy dissipation within 24 hours basin must be constructed as shown on the plans. Temporary sediment basins will have a
<br /> after connection to a surface water or permanent stormwater treatment system. minimum of 3,600 cubic feet of storage per acre draining to the basin. The basin outlet shall POLLUTION PREVENTION MANAGEMENT MEASURES (SECTION 121
<br /> provide for discharging water from the surface to minimize discharging of pollutants. A stabilized o
<br /> 10.Route water around unstabilized areas on the site and to reduce erosion, unless infeasible. Use emergency overflow shall be constructed. Implement the following pollution prevention management measures on the site: U a
<br /> erosion controls and velocity dissipation devices such as check dams, sediment traps, riprap, or
<br /> routed ri ra at outlets within and along the length of an constructed stormwater conveyance 1. Storage, Handling, and Disposal of Construction Products, Materials, and Wastes shall comply with the
<br /> g rip rap 9 g Y Y I hereby certify that this plan,
<br /> channel, and at an outlet, to provide a non-erosive flow velocity, to minimize erosion of channels following to minimize the exposure to stormwater of any of the products, materials, or wastes. Products (V
<br /> Y P Y specifications or report was prepared
<br /> and their embankments, outlets, adjacent stream banks, slopes, and downstream waters during DEWATERING AND BASIN DRAINING (SECTION 10) or wastes which are either not a source of contamination to stormwater or are designed to be exposed to C) by me or under my direct supervision
<br /> discharge conditions. stormwater are not held to this requirement: N and that I am a duly licensed
<br /> 1. Discharge turbid or sediment-laden waters related to dewatering or basin draining (e.g., pumped Professional Engineer under the laws
<br /> 11.Unless infeasible due to lack of pervious or vegetated areas, direct discharges from BMPs to discharges, trench/ditch cut
<br /> a. Building products that have the potential to leach pollutants must be under cover(e.g., plastic of the state of Minnesota.
<br /> s for drainage)to a temporary or permanent sediment basin on the vegetated areas of the site (including any natural buffers) in order to increase sediment removal project site unless infeasible. Discharge from the temporary or permanent sedimentation basins to sheeting or temporary roofs)to prevent the discharge of pollutants or protected by a similarly effective C)
<br /> and maximize stormwater infiltration. Use velocity dissipation devices if necessary to prevent surface waters if the basin water has been visually checked to ensure adequate treatment has means designed to minimize contact with stormwater.
<br /> erosion when directing stormwater to vegetated areas. been obtained in the basi
<br /> b. Pesticides, herbicides, insecticides, fertilizers, treatment chemicals, and landscape materials must be
<br /> n and that nuisance conditions will not result from the discharge. If the under cover(e.g., plastic sheeting or temporary roofs)to prevent the discharge of pollutants or
<br /> water cannot be discharged to a sedimentation basin prior to entering the surface water, it must be protected b similar) effective means designed to minimize contact with stormwater.
<br /> 12.Infiltration areas shall not be excavated until all upstream areas have been stabilized and/or p y y g Bryan D. Miller, P.E.
<br /> treated with the appropriate BMPs, such that the discharge does not adversely affect the receiving c. Hazardous materials, toxic waste, (including oil, diesel fuel, gasoline, hydraulic fluids, paint solvents,
<br /> upstream BMPs are in place to properly prevent sediment deposition. Only low impact equipment water or downstream properties. ( g g y p
<br /> shall be allowed in infiltration areas which shall be clearly identified, staked, and marked/fenced petroleum-based products, wood preservatives, additives, curing compounds, and acids) must be Date: xx.xx.2024 Lic. No.: 54950
<br /> off. properly stored in sealed containers to prevent spills, leaks or other discharge. Restricted access
<br /> 2. Discharge water that contains oil or grease, must use an oil-water separator or suitable filtration storage areas must be provided to prevent vandalism. Storage and disposal of hazardous waste or
<br /> device (e.g. cartridge filters, absorbents pads) prior to discharging the water. hazardous materials must be in compliance with Minn. R. ch. 7045 including seconds containment Rev. Date Description
<br /> 13.Project phasing shall be implemented to ensure land disturbance and temporary erosion control p g secondary p
<br /> measures can be effectively inspected and maintained throughout the duration of the project in as applicable.
<br /> 3. All water from dewatering or basin-draining activities must be discharged in a manner that does ro of collected and disposed Solid waste must be stored, osed properly Hance with Minn. R. ch. 7035.
<br /> accordance with the Inspection and Maintenance requirements of Section 11. not cause nuisance conditions, erosion in receiving channels or downslope properties, erosion or d. p p p y in compliance
<br /> e. Portable toilets must be positioned so that they are secure and will not be tipped or knocked over.
<br /> scour in the immediate vicinity of discharge points, or inundation in wetlands causing significant Sanitary waste must be disposed of properly in accordance with Minn. R. ch. 7041.
<br /> adverse impact to the wetland.
<br /> 2. Fueling and Maintenance of Equipment or Vehicles; Spill Prevention and Response: Take reasonable
<br /> 4. The use of filters with backwash water, haul the backwash water away for disposal, return the steps to prevent the discharge of spilled or leaked chemicals, including fuel, from any area where
<br /> backwash water to the beginning of the treatment process, or incorporate the backwash water into chemicals or fuel will be loaded or unloaded including the use of drip pans or absorbents unless
<br /> the site in a manner that does not cause erosion. Discharge backwash water to the sanitary sewer infeasible. Conduct fueling in a contained area unless infeasible. Ensure adequate supplies are available Project#: 12246027.000
<br /> if permission is granted by the sanitary sewer authority. Replace and clean the filter media used in at all times to clean up discharged materials and that an appropriate disposal method is available for
<br /> dewatering devices when required to retain adequate function. Drawn By: NJN
<br /> recovered spilled materials. Report and clean up spills immediately as required by Minn. Stat. § 115.061,
<br /> using dry clean up measures where possible. Checked By: BDM
<br /> Issue Date: xx.xx.2024
<br /> 3. Vehicle and equipment washing: Wash the exterior of vehicles or equipment on the project site, washing
<br /> must be limited to a defined area of the site. Runoff from the washing area must be contained in a Sheet Title:
<br /> sediment basin or other similarly effective controls and waste from the washing activity must be properly
<br /> disposed of. Properly use and store soaps, detergents, or solvents. No engine degreasing is allowed on
<br /> site.
<br /> SWPPP
<br /> 4. Concrete and other washouts waste: Provide effective containment for all liquid and solid wastes
<br /> generated by washout operations (concrete, stucco, paint, form release oils, curing compounds and other
<br /> construction materials) related to the construction activity. The liquid and solid washout wastes must not Sheet:
<br /> contact the ground, and the containment must be designed so that it does not result in runoff from the
<br /> washout operations or areas. Liquid and solid wastes must be disposed of properly and in compliance
<br /> with MPCA rules. A sign must be installed adjacent to each washout facility that requires site personnel
<br /> to utilize the proper facilities for disposal of concrete and other washout wastes. C701
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