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Stormwater Pollution Prevention Plan
<br />The work described to implement the following Storm Water Pollution Prevention
<br />Plan (SWPPP) shall be considered part of the Contract Documents and shall be
<br />performed by the Contractor. The work to into // and maintain the Best
<br />Management Practices ( BMP's) to prevent erosion and provide sediment contra/
<br />shall be in accordance with Permit No MN R100001 and shall include, but are
<br />not necessarily be limited to the requirements contained heroin.
<br />1. Construction Activity Information
<br />Project Name: Brookfield 4th Addition Clty/Townsntp: City of Ramsey State:
<br />MN Zip Code: 55303
<br />All counties where construction will occur. Anoka County
<br />Project Size (number of acres to be disturbed): 11.05
<br />Project Type: XX Residential — Commercial /Industrial
<br />__ Road Construction _Other (describe)
<br />Cumulative impervious Surface:
<br />Existing area of Impervious surface to nearest quarter acre: 0.00
<br />Post construction area of impervious surface to nearest quarter acre: 9.85
<br />Receiving Waters:
<br />Nome of Water Both, las Appendix A Special Waters
<br />Existing On Site Pond Pond No
<br />Dates of Construction
<br />Estimated Construction Start Date: 4/1/2014
<br />Estimated Completion Dote: 11/15/2014
<br />Contact Information
<br />Owner of Project Site: 8en Minks Business /Firm Name: Brookfield LLC
<br />Federal Tax /D Number: available as needed State Tax /D Number.
<br />available as needed
<br />Contact Person: 780 This: Project SupL Phone: 763 -450 -1201
<br />Mailing Address: 14015 Sunfish Lake Blvd, Ste 400 City: Ramsey State: MN
<br />Zip Code: 55303 E —mail Address:
<br />Contractor /Person who will oversee all aspects of the SWPPP.
<br />NOTE THIS PERSON MUST BE TRAINED PER THE GENERAL PERMIT AUTHORIZATION
<br />TO O /SCH4R0 STORMWATER ASSOCIATED WITH CONSTRUCT /ON ACTIVITY UNDER THE
<br />NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM /STATE DISPOSAL SYSTEM
<br />PERMIT PROGRAM (PART II1A2.)
<br />Contact Person: x xxxxxxxxx 1if/e:xxx Phane:753xxxxxxx
<br />Business Name: xxxxxxxxxxxxx
<br />Mailing Address: 200 Third Avenue NE Suite 100
<br />Cambridge, MN 55008
<br />Certification: Site Management (Erosion & Stormwater Management)
<br />Exp Date xxxxxx
<br />/natructor. xx x xxx
<br />Alternate Contact Person: TBD Phone: 780
<br />E —mat/:
<br />Genera/ Construction Project Information
<br />Description of the construction activity (what will be built. genera/ timeline, etc.):
<br />Brookfield 4th Addition is a residential subdivision comprised of 76 lots to be
<br />done in 3 phases. The construction activities will include grading operations of
<br />streets housepads, surface drainage, and a large infiltration basin. Ut
<br />constnucton, posed sail stabilization, and paving will occur after grading
<br />operations. This is the lost phase of a large development. Ponds were
<br />previously constructed for the development (2007).
<br />Description of soil types found at the protect: Sand
<br />2, General Site Information
<br />Description of the location and type of all temporary and permanent erosion
<br />prevention and sediment control BMP's to be used, including the timing for
<br />installation and procedures used to establish additional temporary BMP's as
<br />necessary:
<br />Contractor shall install and maintain the temporary and permanent erosion
<br />prevention and sediment control BMP's as shown on the accompanying drawing
<br />and as described herein. The timing shall be in accordance with the
<br />Construction Activity Sequence below and in accordance with sound and
<br />proactive construction scheduling and practices.
<br />Accompanying this SWPPP is a site plan that includes the following features:
<br />* Existing and proposed grades, including dividing lines and direction of flow for
<br />all pre— and post — construction stormwater runoff drainage areas located within
<br />the protect limits.
<br />Locations of impervious surfaces and soil types.
<br />* Locabons of areas not to be disturbed.
<br />* Location of areas of phased construction.
<br />* All surface waters and existing wet /ands within one —half mile from the project
<br />boundaries that will receive stormwater runoff from the site (identifiable on
<br />mops such as USGPS 7.5— minute quadrangle maps or equivalent). Where
<br />surface waters receiving runoff associated with construction activity will not fit
<br />on the plan sheet, they must be identified with an arrow, indicating both
<br />direction and distance to the surface water.
<br />* Method(s) to be used for final stabilization of all exposed sal/ areas.
<br />Description of stormwater mitigation measures required os the result of an
<br />environmental. archaeological. or other required local, state. or federal review of
<br />the project:
<br />Not applicable to this project.
<br />Description of the type and locations of 87.4P's appropriate for this site and
<br />sufficient to comply with all applicable requirements of the TMDL implementation
<br />plan and identification of the receiving water and of the areas of project site
<br />discharging to on impaired water that has an approved TMDL implementation
<br />plan that contains requirements for construction Stonnwater discharges:
<br />Not applicable to this project.
<br />Selection of Permanent Stormwater Management System
<br />Will the project create o new cumulotive impervious surface greater than or
<br />aqua/ to one acre? XX Yes _ No
<br />If yes, a water quality volume of inch of runoff from this area must be
<br />treated before leaving the site or entering surface waters (1 inch of runoff
<br />from this area if discharging to special waters).
<br />Methods) to be used to treat runoff from the new impervious surfaces created
<br />by the project:
<br />)0( Wet sedimentation basin — Infiltration/Filtration basin
<br />__ Regional ponds _ Combination of p100710 e
<br />Description of treatment method(s) to be used, including design information for
<br />each method
<br />...Two large sedimentation/ retention ponds were previously constructed for this
<br />development. Additionally, smaller ponds were constructed that drain to these
<br />large ponds. Infiltration was not considered at that time. Small rear yard 'wales
<br />are proposed for this remaining development. These proposed swa /es along with
<br />the small ponds will infiltrate storm wafer per 2013 guidelines....
<br />Description of why it is not feasible to meet the treatment requirement for
<br />water quality volume. This can include proximity to bedrock or road projects
<br />where Inc lack of right —of —way precludes the installation of any permanent
<br />stormwater management practices. Descnption of what other treatment such
<br />as grassed 'wales, smaller ponds, or grit chambers. will be implemented to
<br />treat runoff prior to discharge to surface waters:
<br />Not Applicable
<br />Description of how a proposed alternative method to treat runoff from new
<br />impervious surfaces will achieve approximately BOX remora/ of total suspended
<br />so /ids 017 on annuo/ overage basis:
<br />Not Applicable
<br />3. Erosion Prevention Practices
<br />Description of construction phasing, vegetative buffer strips, horizontal slope
<br />grading, and other construction practices to be used to minimze erosion:
<br />Stage the soil disturbing activities to minimize the amount of disturbed soil
<br />prior to stabilization. Disturbed areas will be considered stabilized when covered
<br />with materials such as anchored mulch, staked sod, riprap, wood fiber blanket,
<br />or other materials that prevent erosion from occumng. Grass seeding alone
<br />will not be considered stabilization.
<br />Disturb only those areas where proposed contours and elevations are shown to
<br />differ from the existing and where removals and other operations are noted.
<br />Special areas of the project site that ore not to be disturbed by construction
<br />activity are noted on the plan.
<br />Install wood fiber blanket where shown 0n the plan to provide temporary erosion
<br />protection.
<br />Description of temporary erosion protection or permanent cover to be used for
<br />exposed positive slopes within 200 lineal feet of a surface water (stream, lake,
<br />pond, marsh, wetland, reservoir, spring, river, storm water basin, storm water
<br />drainage system, waterways, water courses, and irrigation system whether
<br />surface water 1s natural or artificial, public or private with maximum time an
<br />exposed soil area 0017 remain exposed when the area is not actively being
<br />worked.
<br />Provide year round stabilization to the above mentioned areas in accordance
<br />with the following tab /e:
<br />Steepness of slope (H:V)
<br />Greater than 3:1
<br />3:1 through 10:1
<br />Less than 10 :1
<br />4. Sediment Control Practices
<br />Maximum Exposure
<br />Duration When Area
<br />Is Not Actively Worked
<br />7 14 D Das
<br />14 Days
<br />Description of practices to be used to stabilize the normal wetted perimeter of
<br />drainage or diversion ditches within 200 lineal feet of the property edge or
<br />point of discharge to a surface water within 24 hours of connecting the ditch
<br />to the surface wafer
<br />Install seed, fertilizer. and disc — anchored mulch or temporary wood fiber blanket
<br />in ditches and swoles within 24 hours of connecting the ditch or swats to the
<br />surface water where shown on the plan in accordance with the details.
<br />Description of other erosion prevention practices to be used:
<br />Install the specified energy disspotion method, such as riprap and geotex/ile
<br />fabric, at pipe outlets within 24 hours of installation. Permanently seed
<br />disturbed areas prior to end of seeding dates specified by MnDOT.
<br />Description of sediment control practices to be used to minimize sediments
<br />from entering surface waters, including curb and gutter systems and storm
<br />drain inlets:
<br />Permanent sediment control practices to be used on this project consist of
<br />sedimentation basins. Temporary sediment control practices to be used are slit
<br />fence, culvert Inlet protection, storm sewer Inlet protection, stone pad exits,
<br />concrete washout area, ditch checks, and if necessary, street sweeping.
<br />6. Dewatering and Basin Draining
<br />If the project includes dewatering or basin draining. describe the BMP's to be used to
<br />prevent the discharge from adversely affecting the receving waters and downstream
<br />landowners.
<br />Dewatering for sanitary sewer constriction to be performed in accordance with
<br />dewatering permit.
<br />6. Additional BMP's for Special Waters and Discharges to Wetlands
<br />This project does not discharge stormwater directly to a Special Water. This project
<br />does not discharge stormwater directly to wetlands.
<br />7. Construction Activity Sequence
<br />in addition to performing and sequencing the tasks associated with implementing this
<br />SWPPP as described herein and shown on the plan. the Contractor shall perform
<br />construction activities in accordance with the following sequence:
<br />(1) install silt fence along property the of project site where shown on plan and where
<br />property line is down gradient and within 100 feet of areas to have disturbed sal/ and
<br />where property One Is within 20 feet of soli disturbing and other construction activities.
<br />(2) install silt fence along edge of wetlands and of other locations shown on the plan.
<br />(3) Instal/ stone exit pods where shown on pion and at other locations where vehicles
<br />and equipment will leave the site onto paved and grovel surfaces.
<br />(4) Construct storm water ponds and related piping and control structures as shown on
<br />the project plans. Install and maintain temporary erosion prevention measures as
<br />shown on the plan.
<br />(5) Install silt fence along bottom of storm water pond inelopes and where shown on
<br />the plan
<br />(6) Complete earthwork activities. Install and maintain sediment control measures such
<br />ae ditch cheaka and etormwater Inlet protection.
<br />(7) Complete utility construction. Install and maintain sediment contra/ measures such
<br />as in /et protection as work proceeds.
<br />(8) Remove silt deposits from site, remove silt deposits from stormwater basins_
<br />(9) Provide soil stabilization to disturbed areas by preparing topsof4 seeding, fertilizing,
<br />mulching, anchoring mulch in accordance with plans and specification.
<br />(10)Remove perimeter silt fence, other silt fence, check dams, and other sediment
<br />contra/ measures upon achieving final stabilization and Owner submits the Notice of
<br />Termination.
<br />6. Inspections and Maintenance
<br />Description of procedures to be taken to routinely inspect the construction site:
<br />Contractor shall inspect erosion prevention and sediment control BMP's to ensure
<br />Integrity and effectiveness. Repair, replace or supplement non — function/ BMP's to
<br />provide continually functional BMP's. Contractor shall inspect the entire construction
<br />site a minimum of once every seven (7) days during active construction and within 24
<br />hours after a rainfall event greater than 0.5 inches h 24 hours. Inspections shall
<br />include stabilized areas, erosion prevention and sedfrnent control BMP's, and infiltration
<br />areas. Specific tasks associated with the inspection and maintenance of the BMP's
<br />include the following:
<br />* Maintain and retain at the construction site written records of the inspections and
<br />maintenance performed. Records of each inspection and maintenance activity shall
<br />Include: Date and time of Inspection /maintenance activity; Name of person (s)
<br />performing the activity; Finding of Inspection; Recommended corrective actions;
<br />Corrective actions taken; and Date and amount of rainfall events greater than 0.5
<br />i nches in 24 hours.
<br />Repair, rep /ace, or supplement sift fences that become non— functional or accumulate
<br />.sediment to the level of 1/3 the silt fence height or more within 24 hours of
<br />discovery or as 50017 as conditions o /low access.
<br />* Drain temporary and permanent sediment basins and remove sediment when the
<br />volume of sediment collected reaches 1/2 the permanent storage volume within 72
<br />hours of discovery or as soon as conditions allow access.
<br />* Inspect surface waters, drainage ditches, and etorrnwoter conveyance systems for
<br />evidence of sediment deposited by erosion. Remove deltas and deposited sediment and
<br />P Y Po
<br />disco a areas where sediment removal results
<br />lator In posed sot/ within seven (7) days
<br />01
<br />of discovery unless precluded ed b by /ego /, regulatory, or physical constraints. Removal and
<br />stabilization shall be completed within seven (7) days of obtaining access. The
<br />NPDES /SDS permit holder is responsib /e for contacting the local. regions; state, and
<br />federal authorities and receMhg the applicable permits prior to performing this work.
<br />* Inspect construction site vehicle exit locations for evidence of sediment being track
<br />off —site onto paved surfaces. Remove tracked sediment from of —site paved surfaces
<br />within 24 hours of discovery.
<br />* Inspect perimeter of construction site. Remove off —site accumulations of sediment in
<br />a manner and at a frequency to minimize off —site impacts.
<br />9. Pollution Prevention Management Measures
<br />Contractor shall implement the following pollution prevention management measures on
<br />the site:
<br />* Solid Waste: Collect and properly dispose of sediment, asphalt and concrete m!d-n
<br />floating debris, paper, plastic, fabrics. construction and demolition debris, and other
<br />wastes in accordance with MPCA disposal requirements.
<br />* Hazardous Materials: Properly store, provide required secondary containment. and
<br />dispose of oil products, fuels, paint products, and other hazardous subs(nnces to
<br />prevent spills, leaks. and other discharges in accordance with MPCA regulations.
<br />Provide restricted access storage areas to prevent unauthorized access and vandalism.
<br />* Equipment Washing: Restrict external washing of trucks and other construction
<br />equipment to a defined aeo of site. Contain runoff and properly dispose of waste.
<br />Engine degreasing Is prohibited on the property.
<br />* Spill Prevention: Path construction equipment and store potentially hazardous
<br />materials in a designated area located as far as practicable from potential
<br />einnronmentany sensitive areas. Construct impoundment dike and take other measures
<br />required to contain spilled material. Remove and dispose of contaminated soil,
<br />vegetation, and other materials and perform other mitigation measures as required In
<br />accordance with MPCA regulations.
<br />* Sanitary and Septic Waste: Provide and maintain temporary facilities in accordance
<br />with MPCA and Minnesota Deportment of Health regulations.
<br />10. Final Stabilization
<br />Contractor shall achieve final stabilization of the construction site by achieving
<br />the following.
<br />* Soil disturbing activities have been completed and soils are s(08111ed by a
<br />uniform perennial vegetative cover with a density of 70 percent over the entire
<br />pervious surface areo or other equivalent means to prevent soli failure under
<br />erosive conditions.
<br />* Temporary synthetic and structural erosion prevention and sediment contra/
<br />BMP's are oved.
<br />* Sediment is removed from permanent sedimentation basins to return basins to
<br />the design capacity, removed from stormwater conveyance systems, and is
<br />stabi lized or removed from Inc site.
<br />11. Notice of Termination
<br />Contractor shall notify Owner immediately upon achieving Final Stabilization.
<br />Owner must submit Inc Notice of Termination within 30 days after Final
<br />Stabilization or within 30 days of another owner assuming control acing to
<br />Part ILB.5. over all areas of the site that have not undergone Final Stabilization.
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