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Home My WebLink About2011 Sediment and Erosion ControlSEDIMENT AND EROSION CONTROL FOR ORONO COPY LINDA A. WOTIPKA OF LOTS 1-32 & ADJACENT VACATED ALLEY, BLOCK 16, MINNETONKA BLUFFS HENNEPIN COUNTY, MINNESOTA RECEIVED AUG 1 1 2011 CITY OF ORONO (970.2)�o BLACKTOP ROADWAY .% DICKEN ON STREET `962.2'' C� S 8 ,635' 16" E 135.47 ,� / (987.7),,"" 987.7);"" CONCRETE (967.3) (964.6) (DRIVEWAY w000 WOOD PAVER WALK, J I � / •mow TIC / ! I I PROP. WALK "' ::,.W� STEP & VESTSULE 1 ...... ,� TO BE REMOVED 2.5 I PROPOSED PROPOSED PORCH EXTENSION y 49-58 � _ I 24.1 FLOOR ,10 36.1 T ELL�F .A I OP LEVEL- f (963.8) / • . I (967.8) 0 n / / O { NIEXISTING N oo EXISTING(957.1) { 6.0 / .... / t�C) C-41 " d °� 61.8 ............................ �- X966 I GARAGE =Q " 7 o (963.5) / 24.1 HOUSE 0 / I ,q CISTERN PAVERS— — 14.0 # 1205 N _ I � L" y� FLvOR _ (9G6.4) -28.1— — — — .� — — — / OOD WAL MH 409 I ...�.......•S�.$...... (963.2) /7 \ PLANTED DECK / / 1 I AREA PROPOSED SILT • I { -` FENCE / / / / za i.............. -�-� / SERVK;E LLJ i I _ •- `r •• PROPOSED FUTURE TERRACE PAVER V_ I 60 .4 0 1 r — 9 0 S52 i I SOUTH LINE OF LOT 3 �pP r _ I o _950 - _ _ LLJ ( _ _ (946.9) (,g4 I F- I'• ----9 --------- �_ Q --- Lv I (948.5) ;Q { ......N 88033' 28" W 135.46 ..... I I 30 EROSION CONTROL NOTES: Site dewatering. Water pumped from the site shall be treated by temporary sedimentation basins, grit chambers, sand filters, upflow chambers, hydrocyclones, swirl concentrators or other appropriate controls as a propriate. All water from dewatering must be discharged in a manner that does not cause nuisance conditions, erosion in receiving channels or on downslope properties, or inundation in wetlands causing significant adverse impact to the wetland. All discharge points must be adequately protected from erosion and scour. The discharge must be dispersed over natural rock riprap, sand bags, plastic sheeting or other accepted energy dissipation measures. Adequate sedimentation control measures are required for discharge water that contains suspended solids. Construction site waste. Waste and material disposal: All waste, unused building material (includinggarbage debris, cleaning wastes, wastewater, toxic materials or hazardous materials), collected sediment, asphalt and concrete millings, floating debris, paper, plastic, fabric, construction and demolition debris and other wastes must be properly contained on site and disposed of off site, not allowed to be carried by runoff into receiving channel or storage sewer system. Hazardous materials: Oil, gasoline, paint and any hazardous substances must be Properly stored, including secondary containment, to prevent spill, leaks or other discharge. Restricted access to storage areas must be provided to prevent vandalism. Concrete wash must be limited to a defined area of the site and runoff must be contained within the defined area. Storage of hazardous waste must be in compliance with MPCA regulations. Liquid waste: All non stormwater discharges (concrete truck washout, vehicle washing, maintenance spills, etc. conducted during the construction activity must comply with the newest version of the state NPDES permit. Sanitary facilities: Adequate on—site sanitary facilities shall be provided in convenient location(s) for all persons who work on the site. Tracking. Each site shall have graveled roads, access drives and parking areas of sufficient width and length to prevent sediment from being tracked onto public or private roadways. Any sediment reaching a public or private road shall be removed by street cleaning before the end of each workday. Drain inlet protection. All storm drain inlets shall be protected during construction with control measures as approved by the city. These devices shall remain in place until final stabilization of the site. A regular inspection and maintenance plan shall be developed and implemented to assure these devices are operational at all times. Site erosion control. Channelized runoff from adjacent areas passing through the site shall be diverted around disturbed areas, if practical. Diverted runoff shall be conveyed in a manner that will not erode the conveyance at receiving channels. All temporary or permanent drainage channels must be stabilized within 24 hours of being connected to a water of the state. Sediment control is required along channel edges to reduce sediment reaching the channel. All activities on the site shall be conducted in a logical sequence to minimize the area of bare soil exposed at any one time. 111028SWPP-SCJ )ESIGNED REVISION DATE DESCRIPTION 1 5-12-11 SEWER INFORMATION SHOWN, REVISED HARDCOVER & PROPOSED ADDITIONS DRAWN 2 6-8-11 SEDIMENT AND EROSION CONTROL PLAN 3 1 8-10-11 1 PROPOSED PORCH REVISED, PROPOSED SHED REMOVED CHECKED 11-102B All disturbed ground left inactive for 14 or more days must have temporary or permanent stabilization year round. For sites with more than ten acres disturbed at one time, or if a channel originates in the disturbed area, one or more temporary or permanent sedimentation basins shall be constructed. Each sedimentation basin shall have a surface area of at least one percent of the area draining to the basin and at least three feet of depth and constructed in accordance with accepted design specifications. Sediment shall be removed to maintain a depth of three feet. The basin discharge rate shall also be sufficiently low as to not cause erosion along the discharge channel or the receiving water. Perimeter sediment control measures shall be placed along all down gradient perimeters of the site. If a channel or area of concentrated runoff passes through the site, perimeter sediment control measures shall be placed along the channel edges to reduce sediment reaching the channel. All down gradient perimeter sediment control measures must include a maintenance and inspection schedule. Any soil or dirt storage piles containing more than ten cubic yards of material should not be located within 25 feet from a roadway or drainage channel. If remaining for more than 14 days: they shall be stabilized by mulching vegetative cover, tarps or other means and enclosed with down gradient perimeter sediment controls. Piles which will be in existence for less than 14 days shall be enclosed with perimeter sediment controls. Pipe outlets must have energy dissipation installed within 24 hours of connection to waters of the state. Inspections and maintenance. The owner shall be responsible for conducting inspections and maintenance of all erosion and sediment control BMPs on site. Inspections, maintenance, and rainfall on site must be documented and readily available for review. Inspections are required as followed: Once every seven days on exposed soil areas. Within 24 hours after a one—half inch or greater rain event over 24 hours. Once every 30 days on stabilized areas. As soon as runoff occurs or prior to resuming construction on frozen ground. Maintenance is required as follows: When sediment reaches 1/3 the height of the BMP on perimeter control devices, sediment must be removed within 24 hours of discovery. If the perimeter control device is not functional it must be repaired or replaced within 24 hours of discovery. Temporary sediment basins shall be maintained when sediment reaches the outlet height or the basin storage volume. Basins must be drained or sediment removed within 72 hours of discovery. Sediment must be removed from paved surfaces within 24 hours of discovery. Erosion into streets, wetlands or water bodies. If eroded soils (including tracked soils from construction activities enter or appear likely to enter streets, wetlands, or other water bodies, prevention strategies, cleanup and repair must be immediate with the appropriate approvals from the DNR, MPCA, or any other state, federal, or local agencies as necessary. The owner shall provide all traffic control and flagging required to protect the traveling public during cleanup operations. Erosion off—site. If erosion breaches the perimeter of the site, the owner shall immediately develop a cleanup and restoration plan, obtain right—of—entry from the adjoining property owner and get appropriate approvals from all state, federal, and local agencies as necessary. Then implement the cleanup and restoration plan within 48 hours of obtaining the adjoining property owner' s permission and approval from any appropriate state, federal, and local agencies. nst7Y) 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 ASSOCIATES, INC. registered Civil Engineer and Land Surveyor under the laws of the State of Minnesota. CONSULTING ENGINEERS, LAND SURVEYORS, & SITE PLANNERS 445 NORTH WILLOW DRIVE LONG LAKE, MN. 55356 952-473-4141 Mark S. Gronberg Minnesota License Number 12755 SCALE 1 "=20' DATE 4-27-11 JOB NO. 11-102B