|
PROPOSED FOOTBALL /
<br />LACROSSE FIELD
<br />(180' X 360')
<br />A
<br />1
<br />C2.11
<br />1
<br />C2.11
<br />1
<br />C2.11
<br />1
<br />C2.11
<br />91
<br />7
<br />91
<br />8
<br />919
<br />920920
<br />921921
<br />922922
<br />923
<br />924
<br />925
<br />926
<br />927
<br />928
<br />929929
<br />930930931931932932
<br />933933933
<br />934
<br />935
<br />30.0
<br />29.6
<br />32.6
<br />33.0
<br />19.6 ME
<br />28.3 ME
<br />35.9 ME
<br />32.6 ME
<br />30.6 ME
<br />26.6 ME
<br />26.6 ME
<br />26.6 ME
<br />19.6 ME
<br />19.6 ME
<br />29.6 ME
<br />29.5 ME
<br />29.2 ME
<br />29.0 ME
<br />29.3 ME
<br />29.5 ME
<br />29.1 ME
<br />28.9 ME
<br />29.8 ME
<br />28.8 ME
<br />28.5 ME
<br />29.7 ME
<br />16.6 ME
<br />16.2 ME
<br />19.7 ME
<br />19.7 ME
<br />19.7 ME
<br />19.3
<br />19.1
<br />18.8
<br />18.4
<br />29.5 ME
<br />32.9 ME
<br />33.0 ME
<br />33.1 ME
<br />33.2 ME
<br />33.0 ME
<br />33.2 ME
<br />33.2 ME
<br />33.2 ME
<br />32.7 ME
<br />33.2 ME
<br />1
<br />C2.11
<br />1
<br />C2.11
<br />1
<br />C2.11
<br />1
<br />C2.11
<br />SILT FENCE = 4,350 L.F.
<br />SEDIMENT CONTROL LOG = 720 L.F.
<br />ROCK CONSTRUCTION ENTRANCE = 75 C.Y.
<br />SEDIMENT CONTROL DEVICE AT STORM SEWER INLET = 48
<br />APPROXIMATE EROSION CONTROL DEVICE
<br />QUANTITIES 1. REFER TO SHEET C1.34, GRADING AND DRAINAGE PLAN FIELD, FOR GENERAL NOTES.
<br />2.REFER TO SWPPP NARRATIVE (SECTION 01 89 13) FOR CONSTRUCTION SEQUENCING AND
<br />EROSION CONTROL REQUIREMENTS.
<br />3. MAINTAIN ADJACENT PROPERTY AND PUBLIC STREETS CLEAN FROM CONSTRUCTION CAUSED
<br />DIRT AND DEBRIS ON A DAILY BASIS. PROTECT DRAINAGE SYSTEMS FROM SEDIMENTATION
<br />AS A RESULT OF CONSTRUCTION RELATED DIRT AND DEBRIS.
<br />4. MAINTAIN DUST CONTROL DURING GRADING OPERATIONS.
<br />5. ALL EROSION CONTROL METHODS SHALL COMPLY WITH MPCA AND OTHER LOCAL
<br />REGULATIONS.
<br />6. IF EROSION AND SEDIMENT CONTROL MEASURES TAKEN ARE NOT ADEQUATE AND RESULT IN
<br />DOWNSTREAM SEDIMENT, THE CONTRACTOR SHALL BE RESPONSIBLE FOR CLEANING OUT
<br />DOWNSTREAM STORM SEWERS AS NECESSARY, INCLUDING ASSOCIATED RESTORATION.
<br />7. SEDIMENT CONTROL DEVICE AT STORM SEWER INLETS. AT THE INLETS TO ALL STORM SEWER
<br />STRUCTURES, PROVIDE A PRODUCT FROM THE FOLLOWING LIST. ACCEPTABLE PRODUCTS:
<br />A.WIMCO TOP SLAB™ MODEL RD 27.
<br />B. INFRASAFE® SEDIMENT CONTROL BARRIER, DISTRIBUTED BY ROYAL ENVIRONMENTAL
<br />SYSTEMS, INC. SCB'S SHALL BE SIZED SPECIFICALLY FOR THE STRUCTURE AND
<br />CASTING SPECIFIED. SCB'S SHALL BE EQUIPPED WITH FRAME AND PERFORATED
<br />SHROUD AND SHALL BE WRAPPED ON THE OUTSIDE, COVERING THE PERFORATED WALL
<br />ONLY, WITH A GEOTEXTILE SOCK.
<br />C.DANDY BAG® OR DANDY BAG II® DISTRIBUTED BY BROCK WHITE COMPANY, ST. PAUL,
<br />MN (615) 647-0950. DANDY BAG SHALL BE USED ONLY FOR CURB INLETS AFTER
<br />PAVEMENT (BINDER COURSE OR WEAR COURSE) IS INSTALLED OR AT EXISTING PAVED
<br />AREAS.
<br />D. INFRASAFE® DEBRIS COLLECTION DEVICE BY ROYAL ENVIRONMENTAL SYSTEMS, INC.,
<br />DISTRIBUTED BY ESS BROTHERS, 9350 COUNTY ROAD 19, CORCORAN, MN 55357 DCD'S
<br />SHALL BE SIZED SPECIFICALLY FOR THE STRUCTURE AND CASTING SPECIFIED. PROVIDE
<br />FILTER BAGS AND TIES FOR COMPLETE INSTALLATION.
<br />E. OR APPROVED EQUAL.
<br />NOTESLEGEND
<br />EXCERPT FROM THE SWPPP NARRATIVE
<br />The following is from the Storm Water Pollution Prevention Plan Narrative, Section 01 89 13 of the Project Manual. In accordance with
<br />Section 31 00 00, the Contractor shall be responsible for full implementation of and maintenance required by the SWPPP Narrative until the
<br />Notice of Termination is approved by the MPCA. Should differences arise between the SWPPP Narrative information described below and the
<br />information contained within the SWPPP Narrative, bound into the Project Manual, the SWPPP in the Project Manual shall govern.
<br />V.General Construction Sequence
<br />A.Erosion Control Devices, noted herein, include:
<br />1.Silt fence
<br />2.Sediment Control Device at storm sewer inlets
<br />3.Sediment log
<br />4.Rock construction entrance
<br />5.Rock check dams
<br />6.Rip rap
<br />7.Storm water treatment basins
<br />8.Temporary sediment basins
<br />9.Storm sewer systems
<br />10.Temporary outlet pipes
<br />11.Erosion control blanket
<br />12.Temporary seeding
<br />13.Final seeding / sodding
<br />14.Temporary / permanent vegetation
<br />15.Other features identified by the Minnesota Pollution Control Agency, City or Engineer as a Best Management Practice (BMP) device.
<br />B.Contractor shall apply for NPDES Phase II Permit within 24 hours of award of Contract.
<br />1.The Contractor shall post the permit in the job site trailer or other suitable temporary storage area.
<br />C.Review the SWPPP and its sequencing and requirements. The Contractor shall notify the Engineer if site conditions, construction
<br />sequencing, or other items are different or require modification from this written SWPPP. The Engineer will review the suggested
<br />modifications and amend the SWPPP accordingly.
<br />D.Following review of the SWPPP plans commence with the following construction sequence:
<br />1.Install perimeter silt fence where indicated on the Drawings. Silt fence shall be as specified in Section 31 25 00.
<br />2.Prior to construction, delineate turf and vegetated areas not to be disturbed with orange snow fence. No construction traffic,
<br />equipment or materials shall be permitted to utilize, access, or otherwise enter the areas designated not to be disturbed. Minimize soil
<br />compaction and disruption of topsoil in areas outside the construction limits to comply with MN Construction Stormwater General
<br />Permit.
<br />3.Locally strip topsoil and push topsoil into minimum 2 foot high temporary berms at perimeter silt fence locations for redundant
<br />erosion protection. Where possible, leave an undisturbed vegetation strip between the temporary topsoil berm and the silt fence. Silt
<br />fence shall be located downslope from the temporary berm.
<br />a.Provide temporary seed and mulch on temporary berms as described herein.
<br />4.Construct Sediment Control Devices at existing storm sewer inlets (hay bales around castings and silt fence under castings will not be
<br />acceptable).
<br />5.Construct the rock construction entrances.
<br />6.Have silt fence and other erosion control devices inspected by local authorities, as required by the local authority.
<br />7.Begin work at the building additions to allow for critical path construction of buildings footings, foundations, and the remainder of the
<br />buildings.
<br />a.Remove existing surface features (pavements, curbing, etc.). Minimize disturbance to minimize erosion potential.
<br />b.Strip and stockpile topsoil from the building additions and its oversize area. Provide temporary seed and mulch on stockpile as
<br />described herein.
<br />c.Establish a concrete truck washout area and post with a sign.
<br />d.Rough grade the building pads.
<br />e.Complete the grading of the building pads.
<br />f.Begin footing excavations.
<br />g.Provide temporary seed and mulch on all stockpiles as described herein.
<br />8.Construct the sanitary sewer systems.
<br />a.Remove existing surface features (pavements, curbing, etc.). Minimize disturbance to minimize erosion potential.
<br />b.Strip and stockpile topsoil. Provide temporary seed and mulch on stockpile as described herein.
<br />c.Stockpile excavated soils away from drainage swales.
<br />d.Backfill excavations at the end of each day.
<br />9.Construct the watermain systems.
<br />a.Remove existing surface features (pavements, curbing, etc.). Minimize disturbance to minimize erosion potential.
<br />b.Strip and stockpile topsoil. Provide temporary seed and mulch on stockpile as described herein.
<br />c.Stockpile excavated soils away from drainage swales.
<br />d.Backfill excavations at the end of each day.
<br />10.Begin work on the west / south perimeter drives, northeast parking, parking area north of Lake Valentine Road, and bus parking areas,
<br />and surrounding areas. Work may occur simultaneously.
<br />a.Strip and stockpile topsoil. Provide temporary seed and mulch on stockpile as described herein.
<br />b.Remove existing surface features (pavements, curbing, etc.). Minimize disturbance to minimize erosion potential.
<br />c.Rough grade the parking lots and drive areas.
<br />d.Construct proposed storm sewer system.
<br />(1)Construct Sediment Control Devices at proposed storm sewer inlets (hay bales around castings and silt fence under castings
<br />will not be acceptable).
<br />e.Construct the underground stormwater systems.
<br />(1)Protect the underground retention systems during construction.
<br />(2)Construct a temporary berm around the open excavations to prevent construction site sediment from reaching the
<br />underground retention systems. The temporary berms can be a simple wind-row of soil pushed into a berm from the
<br />adjacent areas.
<br />(3)Do not allow sediment to reach the underground systems. Maintenance of Sediment Control Devices is critical until the
<br />upslope areas are stabilized.
<br />(4)Once backfilling the underground retention systems is complete, remove the temporary berm.
<br />f.Establish subgrade elevation at the parking lot and drive areas, and prepare these areas for subsequent courses.
<br />g.Once pavement subgrade testing is complete, construct the stabilized aggregate base course. This will serve as temporary
<br />stabilization for the parking lot and drive areas.
<br />h.Construct curb and gutter, driveway entrance, and concrete walks. This will serve as permanent stabilization for the walk areas.
<br />i.Construct the first lift of pavement in the parking lot and drive areas. This will serve as permanent stabilization for the
<br />bituminous paved areas.
<br />j.Once the upslope areas are stabilized, Construct the Filtration Area.
<br />(1)The parking lot relies on this area for storm drainage. Therefore, it is critical to maintain or enhance the infiltrating
<br />properties of the soils within this area. Options to accomplish include the following:
<br />(a)Limit construction traffic within these areas as much as possible to avoid contaminating and compacting the soils in
<br />these areas.
<br />(b)Use a toothed bucket backhoe to excavate soils. Use off road trucks to haul and dump soils to other parts of the site.
<br />(c)Use a bucket and backhoe to place soils (where fill is required).
<br />(d)Use a toothed bucket for rough grading.
<br />(e)Use manual labor for finish grading.
<br />(f)Do not use equipment on the surface of the areas as this will compact the soils. Minimize smearing of the soils with
<br />mechanical equipment.
<br />(g)No stockpiling of soils or other materials shall occur within the areas.
<br />(2)Rough grade the filtration area to specified tolerances and in accordance with the procedures listed in Section 31 00 00
<br />Earthwork.
<br />(a)Access the area at a single location to minimize disturbance to the surrounding areas.
<br />(b)Use of self propelled equipment shall be limited within the Filtration Area. Self propelled equipment will compact the
<br />soils and adversely affect infiltration. As much as possible, access work in the filtration area from the edges, outside of
<br />the filtration area limits.
<br />(c)Use a backhoe with long reach ability for final excavation that reaches from outside the areas).
<br />(d)Remove all debris by hand.
<br />(e)Scarify the existing underlying soils as specified in Section 31 00 00 Earthwork.
<br />(3)Provide final grading and final restoration at the Filtration Area, including:
<br />(a)Access the areas at a single location to minimize disturbance to the surrounding areas.
<br />(b)Use of self propelled equipment shall be as described above. Do not use skid steer equipment within the area.
<br />(c)Final grade by hand.
<br />(d)Prepare this area for final restoration.
<br />(e)Provide final seed and mulch. This will serve as permanent stabilization for the slopes adjacent to the Filtration Area.
<br />(f)Sod the areas by hand.
<br />(g)Establish vegetation by watering with a temporary irrigation system. Refer to Section 31 00 00 Earthwork for
<br />additional information.
<br />11.Spread topsoil and finish grade turf grass areas (except around the building addition until exterior building work is complete).
<br />12.Install landscaping and plantings.
<br />13.Sod the turf grass areas except for the areas around the building. Use a temporary irrigation system to keep sod adequately watered.
<br />This will serve as permanent stabilization for the turf grass areas.
<br />14.Complete exterior building work.
<br />15.Spread topsoil around the building area.
<br />16.Finish grade topsoil and prepare these areas for sod.
<br />17.Sod the areas around the building. Use a temporary irrigation system to keep sod adequately watered.
<br />18.Provide final lift of pavement and pavement markings.
<br />19.Provide final stabilization and cleanup of the site.
<br />E.Provide maintenance to erosion control devices and BMP’s to comply with the requirements of the permit.
<br />F.Re-install all sediment control practices that have been adjusted or removed to accommodate short-term activates, such as passage of
<br />construction vehicles or equipment, immediately after the short-term activity has been completed. All sediment control practices shall be
<br />re-installed before the next precipitation event if the short term activity is not complete.
<br />G.Inspect erosion control devices and provide routine maintenance as follows:
<br />1.Inspect erosion control a minimum of once per week and after each rain event measuring 0.5" or more. Record inspection on log
<br />posted in Contractor’s construction trailer or other suitable temporary storage area.
<br />a.Records of each inspection and maintenance activity shall include:
<br />(1)Date and time of inspections
<br />(2)Name of person conducting inspection
<br />(3)Findings of inspections, including recommendations for corrective actions
<br />(4)Findings shall include photographs, accurate description of the observations (i.e., color, odor, settled or suspended solids, oil
<br />sheen, or other pollutants), and a map describing the locations of the observations
<br />(5)Corrective actions taken (including dates, times, and party completing maintenance activities
<br />(6)Date and amount of all rainfall events greater than one quarter inch (0.25 inch) in 24 hours
<br />(7)Documentation of changes made to the SWPPP as required by the NPDES General Stormwater Permit for Construction
<br />Activity (MN R100001)
<br />b.Inspections are not required where the ground is frozen. The required inspections
<br />and maintenance schedule must begin within 24 hours after runoff occurs at the site or 24 hours prior to resuming construction,
<br />whichever comes first.
<br />c. Inspections of areas with permanent cover may be reduced to once per month, even if construction activity continues on other
<br />portions of the site. Once all construction activity is complete, monthly inspections may be terminated after one year following
<br />completion of all construction activities.
<br />2.Provide maintenance for all devices as follows:
<br />a.Silt fences, sediment logs, and erosion control devices at storm sewer inlets shall be inspected for depth of sediment, tears, to see
<br />if fabric is securely attached to support posts or structure, and to see that posts and devices are securely in place.
<br />b.Silt fences, sediment logs and erosion control devices at storm sewer inlets, and other erosion control devices shall be cleaned
<br />when sediment reaches 1/3 the height of the erosion control device, within 24 hours.
<br />c.Rock construction entrances shall be inspected for clogging of river rock. River rock that has become clogged with sediment
<br />shall be removed and replaced with fresh river rock.
<br />d.Repairs or replacements to all erosion control devices shall occur within 24 hours of discovery.
<br />e.Temporary diversion berms shall be inspected and any breaches promptly repaired.
<br />f.Tracked sediment from construction vehicles on to public streets and paved areas (including paved areas on the construction site)
<br />shall be removed within 24 hours of discovery.
<br />g.Removal of sediment and restabilization of Surface Waters shall be accomplished within 7 days of discovery (note: surface
<br />waters include curb and gutter, pavements, storm sewer, swales, or other similar storm water conveyance devices).
<br />h.Inlet protection may be removed if a local unit of government directs the permitee to do so because of a specific safety concern.
<br />H.Provide dewatering of excavations as identified in Section 31 00 00.
<br />I.Temporary Soil Stockpiles:
<br />1.Temporary soil stockpiles shall not be placed in surface waters of the state, including surface conveyances such as curb and gutter,
<br />swales, or ditches.
<br />2.Install silt fence at the base of the temporary soil stockpile (full perimeter).
<br />3.Temporary soil stockpiles shall be seeded with temporary seed mix and hydromulch when stockpiles are left inactive for seven (7)
<br />days. Note, this does not apply to aggregate stockpiles or other stockpiles without significant silt, clay or organic components (clean
<br />aggregate stockpiles, clean rock, clean sand and similar clean aggregates).
<br />J.Stabilize denuded areas, initiated immediately, within the following number of days of last construction activity (temporary or permanent)
<br />in that area:
<br />1.Within 7 days, except:
<br />a.Temporary soil stockpiles shall be treated with appropriate erosion control measure, including silt fence and temporary seeding
<br />when stockpiles are left inactive for periods longer than 7 days. Note, this does not apply to aggregate stockpiles or other
<br />stockpiles without significant silt, clay or organic components (clean aggregate stockpiles, clean rock, clean sand and similar
<br />clean aggregates).
<br />K.Provide maintenance of all seeded and sodded areas until fully established.
<br />L.Provide cleaning of storm sewer system at the completion of the project. Cleaning shall include removal of accumulated sediment from all
<br />surface waters as defined by the permit (for example, curb and gutter, pavements, swales, and storm sewer piping and structures).
<br />M.Remove silt fence and erosion control devices at storm sewer inlets following full establishment of site vegetation. Dispose materials
<br />properly off-site.
<br />N.Apply for Notice of Termination (NOT) with MPCA. NOT must be submitted within 30 days after:
<br />1.Site has undergone Final Stabilization (at least 80% vegetative cover), and
<br />2.Removal of all temporary erosion control measures (silt fence, etc.), and
<br />3.Final cleanout and maintenance of all permanent storm water facilities, and
<br />4.Completion of all maintenance activities and site cleanup.
<br />LANDSCAPE ARCHITECTURE SITE PLANNING CIVIL ENGINEERING
<br />ANDERSON - JOHNSON
<br />ASSOCIATES,
<br />INC.
<br />7575 GOLDEN VALLEY ROAD SUITE 200 MINNEAPOLIS. MN 55427
<br />FAX (763) 544-0531 PH (763) 544-7129
<br />DateRegistration Number
<br />Check
<br />Drawn
<br />Date:
<br />Comm
<br />I hereby certify that this plan, specification or report was prepared by
<br />me or under my direct supervision and that I am a duly Licensed
<br />under the laws of the State of
<br />Revisions
<br />Description Date Num
<br />Scale:
<br />North
<br />501 South Eighth Street
<br />Minneapolis, MN 55404
<br />krausanderson.com | 612 332 7281
<br />MOUNDS VIEW
<br />HIGH SCHOOL 2019
<br />IMPROVEMENTS
<br />1900 Lake Valentine Road
<br />ARDEN HILLS, MINNESOTA 55112
<br />4570 VICTORIA STREET N
<br />SHOREVIEW, MINNESOTA 55126
<br />ISD #621: MOUNDS VIEW
<br />PUBLIC SCHOOLS
<br />PROFESSIONAL ENGINEER
<br />MINNESOTA
<br />C1.54
<br />1" = 30'
<br />DAR
<br />MET
<br />02/06/2019
<br />172270
<br />40180 02/06/2019
<br />DAVID A. REY
<br />FIELDPLANCONTROLAND SEDIMENTPREVENTIONEROSION
<br />REFERENCE KEY TO SITE DETAILS
<br /> DETAIL I.D NUMBER (TOP)
<br /> DETAIL SHEET NUMBER (BOTTOM)
<br />EXISTING CONTOUR
<br />PROPOSED CONTOUR
<br />PROPOSED SPOT ELEVATION
<br />ME = MATCH EXISTING
<br />EOF = EMERGENCY OVERFLOW
<br />PROPOSED GRADING LIMITS
<br />PROPOSED STORM SEWER
<br />PROPOSED MANHOLE (MH)
<br />PROPOSED CATCH BASIN (CB)
<br />PROPOSED FLARED END SECTION (FES)
<br />PROPOSED SILT FENCE
<br />PROPOSED SEDIMENT CONTROL LOG
<br />PROPOSED ROCK CONSTRUCTION ENTRANCE
<br />SEDIMENT CONTROL DEVICE AT STORM SEWER INLET
<br />PROPOSED BUILDING STOOP - REFER TO ARCHITECTURAL PLANS
<br />PROPERTY LINE
<br />A
<br />15
<br />C2.11
<br />19
<br />C2.11
<br />20
<br />C2.11
<br />22
<br />C2.11
<br />23
<br />C2.11
<br />915
<br />15.6
<br />1
<br />C2.11
<br />1
<br />C2.11
<br />2
<br />C2.11
<br />3
<br />C2.11
<br />Addendum #2 02/22/2019 1
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