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SEDIMENT AND EROSION CONTROL FOR ORONO COPY
<br />LINDA A. WOTIPKA
<br />OF LOTS 1-32 & ADJACENT VACATED ALLEY, BLOCK 16, MINNETONKA BLUFFS
<br />HENNEPIN COUNTY, MINNESOTA RECEIVED
<br />AUG 1 1 2011
<br />CITY OF ORONO
<br />(970.2)�o BLACKTOP
<br />ROADWAY .% DICKEN ON STREET `962.2''
<br />C�
<br />S 8 ,635' 16" E 135.47
<br />,� /
<br />(987.7),,""
<br />987.7);"" CONCRETE (967.3) (964.6)
<br />(DRIVEWAY w000 WOOD PAVER WALK, J
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<br />! I I PROP. WALK "' ::,.W� STEP & VESTSULE
<br />1 ...... ,� TO BE REMOVED
<br />2.5 I PROPOSED
<br />PROPOSED PORCH EXTENSION y 49-58 �
<br />_ I 24.1 FLOOR ,10 36.1 T ELL�F
<br />.A I OP
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<br />• . I (967.8) 0 n / /
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<br />X966 I GARAGE =Q " 7
<br />o (963.5) /
<br />24.1 HOUSE 0 /
<br />I ,q CISTERN
<br />PAVERS— — 14.0 # 1205 N
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<br />OOD WAL MH 409
<br />I ...�.......•S�.$...... (963.2) /7
<br />\ PLANTED DECK / / 1
<br />I AREA
<br />PROPOSED SILT
<br />• I { -` FENCE / / / / za
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<br />-�-� / SERVK;E
<br />LLJ
<br />i I _ •- `r •• PROPOSED FUTURE
<br />TERRACE PAVER
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<br />60
<br />.4 0 1 r — 9 0
<br />S52
<br />i I
<br />SOUTH LINE
<br />OF LOT 3 �pP
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<br />Lv I (948.5)
<br />;Q { ......N 88033' 28" W 135.46 .....
<br />I I 30
<br />EROSION CONTROL NOTES:
<br />Site dewatering. Water pumped from the site shall be treated by temporary sedimentation basins, grit
<br />chambers, sand filters, upflow chambers, hydrocyclones, swirl concentrators or other appropriate
<br />controls as a propriate. All water from dewatering must be discharged in a manner that does not cause
<br />nuisance conditions, erosion in receiving channels or on downslope properties, or inundation in
<br />wetlands causing significant adverse impact to the wetland.
<br />All discharge points must be adequately protected from erosion and scour. The discharge must be
<br />dispersed over natural rock riprap, sand bags, plastic sheeting or other accepted energy dissipation
<br />measures. Adequate sedimentation control measures are required for discharge water that contains
<br />suspended solids.
<br />Construction site waste.
<br />Waste and material disposal: All waste, unused building material (includinggarbage debris, cleaning
<br />wastes, wastewater, toxic materials or hazardous materials), collected sediment, asphalt and concrete
<br />millings, floating debris, paper, plastic, fabric, construction and demolition debris and other
<br />wastes must be properly contained on site and disposed of off site, not allowed to be carried by runoff
<br />into receiving channel or storage sewer system.
<br />Hazardous materials: Oil, gasoline, paint and any hazardous substances must be Properly stored,
<br />including secondary containment, to prevent spill, leaks or other discharge. Restricted access to storage
<br />areas must be provided to prevent vandalism. Concrete wash must be limited to a defined area of the site
<br />and runoff must be contained within the defined area. Storage of hazardous waste must be in compliance
<br />with MPCA regulations.
<br />Liquid waste: All non stormwater discharges (concrete truck washout, vehicle washing, maintenance spills,
<br />etc. conducted during the construction activity must comply with the newest version of the state NPDES permit.
<br />Sanitary facilities: Adequate on—site sanitary facilities shall be provided in convenient location(s) for all
<br />persons who work on the site.
<br />Tracking. Each site shall have graveled roads, access drives and parking areas of sufficient width and length
<br />to prevent sediment from being tracked onto public or private roadways. Any sediment reaching a public or
<br />private road shall be removed by street cleaning before the end of each workday.
<br />Drain inlet protection. All storm drain inlets shall be protected during construction with control measures as
<br />approved by the city. These devices shall remain in place until final stabilization of the site. A regular
<br />inspection and maintenance plan shall be developed and implemented to assure these devices are operational at
<br />all times.
<br />Site erosion control.
<br />Channelized runoff from adjacent areas passing through the site shall be diverted around disturbed areas, if
<br />practical. Diverted runoff shall be conveyed in a manner that will not erode the conveyance at receiving
<br />channels. All temporary or permanent drainage channels must be stabilized within 24 hours of being connected
<br />to a water of the state. Sediment control is required along channel edges to reduce sediment reaching the channel.
<br />All activities on the site shall be conducted in a logical sequence to minimize the area of bare soil exposed at
<br />any one time.
<br />111028SWPP-SCJ
<br />)ESIGNED REVISION DATE DESCRIPTION
<br />1 5-12-11 SEWER INFORMATION SHOWN, REVISED HARDCOVER & PROPOSED ADDITIONS
<br />DRAWN 2 6-8-11 SEDIMENT AND EROSION CONTROL PLAN
<br />3 1 8-10-11 1 PROPOSED PORCH REVISED, PROPOSED SHED REMOVED
<br />CHECKED
<br />11-102B
<br />All disturbed ground left inactive for 14 or more days must have temporary or permanent stabilization year round.
<br />For sites with more than ten acres disturbed at one time, or if a channel originates in the disturbed area, one or
<br />more temporary or permanent sedimentation basins shall be constructed. Each sedimentation basin shall have a
<br />surface area of at least one percent of the area draining to the basin and at least three feet of depth and
<br />constructed in accordance with accepted design specifications. Sediment shall be removed to maintain a depth of
<br />three feet. The basin discharge rate shall also be sufficiently low as to not cause erosion along the discharge
<br />channel or the receiving water.
<br />Perimeter sediment control measures shall be placed along all down gradient perimeters of the site. If a channel
<br />or area of concentrated runoff passes through the site, perimeter sediment control measures shall be placed
<br />along the channel edges to reduce sediment reaching the channel. All down gradient perimeter sediment control
<br />measures must include a maintenance and inspection schedule.
<br />Any soil or dirt storage piles containing more than ten cubic yards of material should not be located within 25
<br />feet from a roadway or drainage channel. If remaining for more than 14 days: they shall be stabilized by
<br />mulching vegetative cover, tarps or other means and enclosed with down gradient perimeter sediment controls.
<br />Piles which will be in existence for less than 14 days shall be enclosed with perimeter sediment controls.
<br />Pipe outlets must have energy dissipation installed within 24 hours of connection to waters of the state.
<br />Inspections and maintenance. The owner shall be responsible for conducting inspections and maintenance of all
<br />erosion and sediment control BMPs on site.
<br />Inspections, maintenance, and rainfall on site must be documented and readily available for review. Inspections
<br />are required as followed:
<br />Once every seven days on exposed soil areas.
<br />Within 24 hours after a one—half inch or greater rain event over 24 hours.
<br />Once every 30 days on stabilized areas.
<br />As soon as runoff occurs or prior to resuming construction on frozen ground.
<br />Maintenance is required as follows:
<br />When sediment reaches 1/3 the height of the BMP on perimeter control devices, sediment must be removed within
<br />24 hours of discovery.
<br />If the perimeter control device is not functional it must be repaired or replaced within 24 hours of discovery.
<br />Temporary sediment basins shall be maintained when sediment reaches the outlet height or the basin storage
<br />volume. Basins must be drained or sediment removed within 72 hours of discovery.
<br />Sediment must be removed from paved surfaces within 24 hours of discovery.
<br />Erosion into streets, wetlands or water bodies. If eroded soils (including tracked soils from construction
<br />activities enter or appear likely to enter streets, wetlands, or other water bodies, prevention strategies,
<br />cleanup and repair must be immediate with the appropriate approvals from the DNR, MPCA, or any other state,
<br />federal, or local agencies as necessary. The owner shall provide all traffic control and flagging required to
<br />protect the traveling public during cleanup operations.
<br />Erosion off—site. If erosion breaches the perimeter of the site, the owner shall immediately develop a
<br />cleanup and restoration plan, obtain right—of—entry from the adjoining property owner and get appropriate
<br />approvals from all state, federal, and local agencies as necessary. Then implement the cleanup and restoration
<br />plan within 48 hours of obtaining the adjoining property owner' s permission and approval from any appropriate
<br />state, federal, and local agencies. nst7Y)
<br />G R O N B E R G A N D I hereby certify that this survey was prepared by duly or under my direct supervision, and that I am a duly
<br />ASSOCIATES, INC. registered Civil Engineer and Land Surveyor under the
<br />laws of the State of Minnesota.
<br />CONSULTING ENGINEERS, LAND
<br />SURVEYORS, & SITE PLANNERS
<br />445 NORTH WILLOW DRIVE
<br />LONG LAKE, MN. 55356
<br />952-473-4141 Mark S. Gronberg Minnesota License Number 12755
<br />SCALE
<br />1 "=20'
<br />DATE
<br />4-27-11
<br />JOB NO.
<br />11-102B
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