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PROPEX-"SILT STOP" FABRIC
<br />2'x2"x4' WOOD
<br />STAKES @ 4' O.C. 10' MINIMUM
<br />BACKFILL
<br />EXISTING GROUND BURY BOTTOM
<br />ji 6 OF FABRIC
<br />PROPOSED -
<br />EMBANKMENT
<br />EROSION CONTROL SILT FENCE & C.B. PROTECTION (E-02)
<br />STATE OF MINNESOTA POLLUTION CONTROL AGENCY STORM
<br />PROJECT NARRATIVE
<br />• THE PROJECT CONSISTS OF PREPARATION OF LAND FOR SINGLE FAMILY
<br />DWELLING UNITS. WORK INCLUDES GRADING, INCLUDING EROSION CONTROL,
<br />STORM SEWER, SAN. SEWER, WATER, AND CONSTRUCTION OF NATURAL GAS,
<br />ELECTRICAL, CABLE TV AND COMMUNICATION SYSTEMS. THE SITE WAS
<br />PREVIOUSLY DEVELOPED FOR MULTI -FAMILY UNITS.
<br />• THE SWPPP ADDRESSES THE POTENTIAL FOR A DISCHARGE OF SEDIMENT AND
<br />OTHER POTENTIAL POLLUTANTS FROM THE SITE WITH THE IMPLEMENTATION
<br />OF THIS PLAN.
<br />• REQUIREMENTS OF THE GENERAL PERMIT AUTHORIZATION TO DISCHARGE
<br />STORM WATER ASSOCIATED WITH CONSTRUCTION ACTIVITY UNDER THE
<br />NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (N.P.D.E.S.) / STATE
<br />DISPOSAL SYSTEM (SDS) PERMIT PROGRAM TAKE PRECEDENCE OVER THE
<br />PLANS AND THESE NOTES.
<br />RESPONSIBILITY REQUIREMENTS
<br />• THE PERMANENT STORMWATER MANAGEMENT SYSTEM IS THE PROPOSED 2
<br />BASINS (PONDS). TOGETHER WITH ROADSIDE DITCHES.
<br />• THE OWNER/DEVELOPER AND CITY WILL HAVE RESPONSIBILITY FOR LONG
<br />TERM OPERATION AND MAINTENANCE OF THE PERMANENT STORM WATER
<br />MANAGEMENT SYSTEM.
<br />• OWNER/DEVELOPER & CONTRACTOR AND/OR ITS REPRESENTATIVE WILL HAVE
<br />RESPONSIBILITY FOR IMPLEMENTATION OF THE SWPPP BEFORE AND DURING
<br />CONSTRUCTION.
<br />• THE CONTRACTOR SHALL PROVIDE THE OWNER WITH A CHAIN OF
<br />RESPONSIBILITY WITH ALL OPERATORS ON SITE TO ENSURE THAT THE SWPPP
<br />WILL BE IMPLEMENTED AS FOLLOWS:
<br />GRADING CONTRACTOR: PENDING
<br />BUSINESS NAME
<br />X X
<br />CONTACT PERSON TELEPHONE (INCLUDE AREA CODE)
<br />STREETS & UTILITIES CONTRACTOR: PENDING
<br />BUSINESS NAME
<br />X X
<br />CONTACT PERSON TELEPHONE (INCLUDE AREA CODE)
<br />• THE CONTRACTOR SHALL FOLLOW THE IMPLEMENTATION SEQUENCE AS
<br />SHOWN ON THIS SHEET.
<br />• CONTRACTOR TO ADHERE TO ALL REQUIREMENTS OF THE MINNESOTA
<br />POLLUTION CONTROL AGENCY N.P.D.E.S. PERMIT, INCLUDING THE
<br />REQUIREMENT TO MINIMIZE THE AREA DISTURBED BY GRADING AT ANY GIVEN
<br />TIME AND TO COMPLETE TURF RESTORATION WITHIN THE TIME REQUIRED BY
<br />THE PERMIT AFTER COMPLETION OF GRADING OF AN AREA.
<br />• ALL BEST MANAGEMENT PRACTICES (BMP'S) SELECTED SHALL BE
<br />APPROPRIATE FOR THE TIME OF YEAR, SITE CONDITIONS, AND ESTIMATED
<br />DURATION OF USE.
<br />• A COPY OF THESE PLANS MUST BE ON THE JOB SITE WHENEVER
<br />CONSTRUCTION IS IN PROGRESS.
<br />EROSION PREVENTION PRACTICES
<br />• THE CONTRACTOR SHALL IMPLEMENT CONSTRUCTION PHASING, VEGETATIVE
<br />BUFFER STRIPS, HORIZONTAL SLOPE GRADING, AND OTHER CONSTRUCTION
<br />PRACTICES THAT MINIMIZE EROSION. THE LOCATION OF AREAS NOT TO BE
<br />DISTURBED MUST BE DELINEATED (E.G. WITH FLAGS, STAKES, SIGNS, SILT
<br />FENCE, ETC.) ON THE DEVELOPMENT SITE BEFORE WORK BEGINS.
<br />• ALL EXPOSED SOIL AREAS WITHIN 200 FEET OF A SURFACE WATER OR ANY
<br />STORMWATER CONVEYANCE SYSTEM WHICH IS CONNECTED TO A SURFACE
<br />WATER MUST BE STABILIZED WITHIN 7 DAYS (STEEPER THAN 3:1 SLOPES), 7
<br />DAYS (ALL OTHER AREAS). THESE AREAS INCLUDE POND SIDE SLOPES,
<br />EXPOSED SOIL AREAS WITH A POSITIVE SLOPE TO A CURB AND GUTTER
<br />SYSTEM, STORM SEWER INLET, DRAINAGE DITCH, OR OTHER SYSTEM THAT
<br />DISCHARGES TO A SURFACE WATER.
<br />• THE NORMAL WETTED PERIMETER OF ANY DRAINAGE DITCH MUST BE
<br />STABILIZED WITHIN 200 LINEAL FEET FROM THE PROPERTY EDGE, OR FROM
<br />THE POINT OF DISCHARGE TO ANY SURFACE WATER (WITHIN 24 HOURS OF
<br />CONNECTING TO A SURFACE WATER).
<br />• PIPE OUTLETS MUST BE PROVIDED WITH TEMP. OR PERMANENT ENERGY
<br />DISSIPATION WITHIN 24 HOURS OF CONNECTION TO A SURFACE WATER.
<br />WATER POLLUTION PREVENTION PLAN (SWPPP) NOTES
<br />SEDIMENT CONTROL PRACTICES
<br />• SEDIMENT CONTROL PRACTICES MUST MINIMIZE SEDIMENT ENTERING SURFACE
<br />WATERS. DITCHES AND SEDIMENT BASINS REQUIRE SEDIMENT CONTROL
<br />PRACTICES ONLY AS APPROPRIATE FOR SITE CONDITIONS. IF DOWN GRADE
<br />SYSTEM IS OVERLOADED, ADDITIONAL UPGRADE PRACTICES MUST BE
<br />INSTALLED, AND THE SWPPP MUST BE AMENDED. THERE SHALL BE NO
<br />UNBROKEN SLOPE LENGTH OF GREATER THAN 75 FEET FOR SLOPES WITH A
<br />GRADE OF 3:1 OR STEEPER. SLOPES MAY BE BROKEN WITH SILT FENCE,
<br />ROCK CHECK DAMS, COMPOST SNAKES, OR OTHER APPROVED METHODS
<br />AND/OR AS SHOWN ON THE EROSION CONTROL PLAN.
<br />• SEDIMENT CONTROL PRACTICES MUST BE ESTABLISHED ON DOWNGRADE
<br />PERIMETERS BEFORE UPGRADE LAND DISTURBING ACTIVITIES BEGIN.
<br />THE TIMING OF SEDIMENT CONTROL PRACTICES MAY BE ADJUSTED TO
<br />ACCOMMODATE SHORT TERM ACTIVITIES. HOWEVER, THESE PRACTICES MUST
<br />BE INSTALLED BEFORE THE NEXT PRECIPITATION EVENT EVEN IF THE
<br />ACTIVITY IS NOT COMPLETE.
<br />• CONTRACTOR MUST PROTECT ALL STORM DRAIN INLETS BY APPROPRIATE
<br />BMP'S DURING CONSTRUCTION UNTIL ALL SOURCES WITH POTENTIAL FOR
<br />DISCHARGING TO THE INLET HAVE BEEN STABILIZED.
<br />• TEMPORARY STOCKPILES MUST HAVE SILT FENCE AROUND THE PERIMETER OF
<br />THE BASE OF THE STOCKPILE AND CANNOT BE PLACED IN SURFACE WATERS,
<br />INCLUDING STORM WATER CONVEYANCES SUCH AS CURB AND GUTTER
<br />SYSTEMS, OR CONDUITS OR DITCHES.
<br />• VEHICLE TRACKING MUST BE MINIMIZED BY BMP'S. STREET SWEEPING MUST
<br />BE USED IF SUCH BMP'S ARE NOT ADEQUATE TO PREVENT SEDIMENT FROM
<br />BEING TRACKED ONTO THE STREET. CLEANUP OF TRACKED DEBRIS MUST BE
<br />COMPLETED WITHIN 12 HOURS OF OCCURRENCE.
<br />• CONTRACTOR MUST INSTALL TEMPORARY (OR PERMANENT) SEDIMENTATION
<br />BASINS WHERE TEN OR MORE ACRES OF DISTURBED SOIL DRAIN TO A
<br />COMMON LOCATION AND/OR AS SHOWN ON THE EROSION CONTROL PLAN.
<br />DEWATERING AND SURFACE DRAINAGE
<br />• DEWATERING OR ANY TYPE OF SURFACE DRAINAGE THAT MAY HAVE TURBID
<br />OR SEDIMENT LADEN DISCHARGE WATER MUST BE DISCHARGED TO A
<br />SEDIMENT BASIN ON THE PROJECT SITE WHENEVER POSSIBLE. IF THE WATER
<br />CANNOT BE DISCHARGED TO A BASIN PRIOR TO ENTERING THE SURFACE
<br />WATER, IT MUST BE TREATED WITH THE APPROPRIATE BMP'S SUCH THAT
<br />THE DISCHARGE DOES NOT ADVERSELY AFFECT THE RECEIVING WATER OR
<br />DOWNSTREAM LANDOWNERS. THE CONTRACTOR MUST ENSURE THAT
<br />DISCHARGE POINTS ARE ADEQUATELY PROTECTED FROM EROSION AND SCOUR.
<br />THE DISCHARGE MUST BE DISPERSED OVER NATURAL ROCK RIPRAP, SAND
<br />BAGS, PLASTIC SHEETING, OR OTHER ACCEPTED ENERGY DISSIPATION
<br />MEASURES.
<br />• ALL WATER FROM DEWATERING MUST BE DISCHARGED IN A MANNER THAT
<br />DOES NOT CAUSE NUISANCE CONDITIONS, EROSION, OR INUNDATION OF
<br />WETLANDS CAUSING SIGNIFICANT ADVERSE IMPACT TO THE WETLAND.
<br />INSPECTIONS AND MAINTENANCE
<br />• THE CONTRACTOR MUST APPOINT SOMEONE TO INSPECT THE CONSTRUCTION
<br />SITE ONCE EVERY SEVEN DAYS DURING ACTIVE CONSTRUCTION AND WITHIN
<br />24 HOURS AFTER A RAINFALL EVENT OF GREATER THAN 0.5 INCHES IN 24
<br />HOURS. ALL INSPECTIONS MUST BE RECORDED IN WRITING AND RETAINED
<br />PER M.P.C.A. N.P.D.E.S. REQUIREMENTS. (NOTE: LOCAL JURISDICTION MAY
<br />REQUIRE MORE FREQUENT INTERVAL OF INSPECTION.)
<br />POLLUTION PREVENTION MANAGEMENT MEASURES
<br />• SOLID WASTE MUST BE DISPOSED OF PER M.P.C.A. REQUIREMENTS.
<br />• HAZARDOUS MATERIALS MUST BE STORED AND DISPOSED OF PER M.P.C.A.
<br />REGULATIONS.
<br />• EXTERNAL WASHING OF CONSTRUCTION VEHICLES MUST BE LIMITED TO A
<br />DEFINED AREA OF THE SITE. RUNOFF MUST BE CONTAINED AND WASTE
<br />PROPERLY DISPOSED OF. NO ENGINE DEGREASING IS ALLOWED ON SITE.
<br />KNOWLEDGEABLE PERSON:
<br />Paragraph IIIA2 of the general permit is
<br />hereby incorporated in it's entirety into
<br />this SWPPP.
<br />RECORDS RETENTION:
<br />Shall be as stated in paragraph III.E.
<br />Record retention items 1-5 of the
<br />general permit shall be kept on site.
<br />FINAL STABILIZATION
<br />• THE PERMITEE (THE OWNER/DEVELOPER AND THE CONTRACTOR WHO SIGNS
<br />THE MPCA NPDES/SDS APPLICATION FOR GENERAL STORM -WATER PERMIT
<br />FOR CONSTRUCTION ACTIVITY) MUST ENSURE FINAL STABILIZATION OF THE
<br />SITE. A NOTICE OF TERMINATION MUST BE SUBMITTED WITHIN 30 DAYS OF
<br />FINAL STABILIZATION.
<br />• FINAL STABILIZATION CAN BE ACHIEVED IN ONE OF THE FOLLOWING WAYS:
<br />1.) ALL SOIL DISTURBING ACTIVITIES HAVE BEEN COMPLETED AND MORE
<br />THAN 70% OF THE SURFACE STABILIZED WITH UNIFORM PERENNIAL
<br />VEGETATIVE COVER AND;
<br />A. ALL DITCHES ARE STABILIZED;
<br />B. ALL EROSION BMP'S (SUCH AS SILT FENCE) MUST BE
<br />REMOVED;
<br />C. ALL SEDIMENT HAS BEEN CLEANED OUT FROM CONVEYANCES
<br />AND SEDIMENTATION BASINS THAT ARE TO BE USED AS
<br />PERMANENT BASINS. THE CLEANOUT OF PERMANENT BASINS
<br />MUST BE SUFFICIENT TO RETURN THE BASIN TO DESIGN
<br />CAPACITY.
<br />2.) FOR RESIDENTIAL CONSTRUCTION, TEMPORARY EROSION PROTECTION
<br />AND DOWNGRADE PERIMETER CONTROL FOR INDIVIDUAL LOTS MUST
<br />BE COMPLETED AND THE RESIDENCE HAS BEEN TRANSFERRED TO
<br />THE HOMEOWNER. ADDITIONALLY, THE PERMITTEE MUST DISTRIBUTE
<br />THE MPCA "HOMEOWNER FACTSHEET" TO THE HOMEOWNER.
<br />TRANSFER OF RESPONSIBILITY FOR SWPPP
<br />• FROM SITE GRADING CONTRACTOR TO STREET AND UTILITY CONTRACTOR:
<br />FOLLOWING SITE GRADING COMPLETION, WHEN ALL EROSION CONTROL
<br />MEASURES HAVE BEEN INSTALLED BY THE SITE GRADING CONTRACTOR AS
<br />REQUIRED AND ARE IN WORKING ORDER WITHOUT NEED OF MAINTENANCE, AND
<br />ALL MEASURES HAVE BEEN REVIEWED AND ACCEPTED BY THE STREET AND
<br />UTILITY CONTRACTOR, EXCEPT FOR TURF RESTORATION WHICH MUST
<br />DEMONSTRATE THAT IT IS VIABLY GROWING, THEN THE STREET AND UTILITY
<br />CONTRACTOR WILL EXECUTE AN MPCA "APPLICATION FOR PERMIT
<br />TRANSFER/MODIFICATION FORM" (AVAILABLE ON-LINE AT
<br />WWW. PCA. STATE. MN. US) FOR THE TRANSFERENCE OF RESPONSIBILITY UNDER
<br />THE ORIGINAL NPDES PERMIT ISSUED FOR THE PROJECT.
<br />GENERAL REQUIREMENTS
<br />• FOR DISCHARGES TO SPECIAL WATERS OR WETLANDS, REQUIREMENTS OF THE
<br />GENERAL PERMIT AUTHORIZATION TO DISCHARGE STORM WATER ASSOCIATED
<br />WITH CONSTRUCTION ACTIVITY UNDER THE N.P.D.E.S./STATE DISPOSAL
<br />SYSTEM PERMIT PROGRAM APPENDIX A MUST BE FOLLOWED.
<br />• OPERATE TRACK EQUIPMENT (DOZER) UP AND DOWN EXPOSED SOIL SLOPES
<br />ON FINAL PASS, LEAVING TRACK GROOVES PERPENDICULAR TO THE SLOPE.
<br />DO NOT BACK -BLADE. LEAVE A SURFACE ROUGH TO MINIMIZE EROSION.
<br />• ALL TREES NOT LISTED FOR REMOVAL SHALL BE PROTECTED. DO NOT
<br />OPERATE EQUIPMENT WITHIN THE DRIPLINE, ROOT ZONES OR WITHIN TREE
<br />PROTECTION FENCE AREAS.
<br />• WHEREVER POSSIBLE, PRESERVE THE EXISTING TREES, GRASS AND OTHER
<br />VEGETATIVE COVER TO HELP FILTER RUNOFF.
<br />• ESTABLISH A PERMANENT VEGETATIVE COVER OVER ALL EXPOSED SOILS
<br />WHERE LAND IS COMING OUT OF AGRICULTURAL PRODUCTION. PLANT AS
<br />SOON AS POSSIBLE TO ESTABLISH DENSE GRASS FILTER PRIOR TO
<br />CONSTRUCTION AND TO MINIMIZE WEED GROWTH.
<br />ESTIMATED QUANTITIES:
<br />I.
<br />Rock Construction Entrance
<br />-
<br />2.
<br />Catch Basin Protection
<br />17 ea.
<br />3.
<br />Silt Fence
<br />3500
<br />LF
<br />4.
<br />Straw Fiber Blanket
<br />9300
<br />SF
<br />5.
<br />Rip Rap
<br />-
<br />W
<br />6.
<br />Seeding W/Hydraulic
<br />RSED E
<br />157E 0
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<br />�2
<br />Soil Stabilizer
<br />3.0
<br />Ac.
<br />7.
<br />Temporary Seeding
<br />C
<br />LAKE
<br />H-
<br />W/Hydraulic Soil Stabilizer
<br />3.0
<br />Ac.
<br />8.
<br />Bio Rolls
<br />400
<br />LF
<br />GENERAL REQUIREMENTS (CONT'D)
<br />BMP'S REFER TO EROSION AND SEDIMENT CONTROL PRACTICES DEFINED IN
<br />THE MPCA PROTECTING WATER QUALITY IN URBAN AREAS AND THE
<br />MINNESOTA CONSTRUCTION SITE EROSION AND SEDIMENT CONTROL PLANNING
<br />HANDBOOK.
<br />• ALL EROSION AND SEDIMENT CONTROL FACILITIES (BMP'S) SHALL BE
<br />INSTALLED AND IN OPERATION PRIOR TO LAND DISTURBANCE ACTIVITIES.
<br />SOME EROSION CONTROLS SUCH AS CHECK DAMS AND TEMPORARY
<br />SILT PONDS MAY BE INSTALLED AS GRADING OCCURS IN THE
<br />SPECIFIC AREA. THEY SHALL BE MAINTAINED UNTIL CONSTRUCTION
<br />IS COMPLETED AND THE POTENTIAL FOR EROSION HAS PASSED.
<br />• THE BMP'S SHOWN ON THE PLANS ARE THE MINIMUM REQUIREMENTS FOR THE
<br />ANTICIPATED SITE CONDITIONS. AS CONSTRUCTION PROGRESSES AND
<br />UNEXPECTED OR SEASONAL CONDITIONS DICTATE, THE PERMITTEE SHALL
<br />ANTICIPATE THAT MORE BMP'S WILL BE NECESSARY TO ENSURE EROSION AND
<br />SEDIMENT CONTROL ON THE SITE. DURING THE COURSE OF CONSTRUCTION,
<br />IT IS THE RESPONSIBILITY OF THE PERMITTEE TO ADDRESS ANY NEW
<br />CONDITIONS THAT MAY BE CREATED BY CONSTRUCTION ACTIVITIES AND/OR
<br />CLIMATIC EVENTS AND TO PROVIDE ADDITIONAL BMP'S OVER AND ABOVE THE
<br />MINIMUM REQUIREMENTS SHOWN ON THE PLANS THAT MAY BE NEEDED TO
<br />PROVIDE EFFECTIVE PROTECTION OF WATER AND SOIL RESOURCES.
<br />• SLOPES AT 3:1 OR STEEPER, AND/OR WHERE INDICATED ON THE PLANS
<br />SHALL BE SEEDED AND HAVE AN EROSION CONTROL BLANKET MNDOT 3885
<br />CAT 3 TYPE 2S INSTALLED AND BE HYDROSEEDED WITH TACKIFER MULCH.
<br />• ALL CONSTRUCTION ENTRANCES SHALL BE SURFACED WITH WASHED ROCK
<br />ACROSS FULL WIDTH FROM ENTRANCE POINT TO 50 FEET INTO THE
<br />CONSTRUCTION ZONE. CLEANING AND/OR REPLACEMENT MAY BE REQUIRED.
<br />SEE DETAIL SHEET 5 OF 8.
<br />• IT SHALL BE THE CONTRACTOR'S RESPONSIBILITY TO PLACE EROSION
<br />CONTROL FENCING BETWEEN THE NWL & HWL.
<br />. STRAW BALE OR SILT FENCE PROTECTION OR OTHER MECHANICAL DEVICE
<br />(WIMCO) SHALL BE INSTALLED AROUND ALL CATCH BASINS UNTIL THE SITE IS
<br />RESTORED.
<br />• INSTALL PERIMETER SILT FENCE AROUND THE DEVELOPMENT ON ALL DOWN
<br />GRADIENTS AND AROUND ALL WETLANDS PRIOR TO ANY CONSTRUCTION.
<br />• TEMPORARY SEED SHALL BE MNDOT MIX 190 @ 60 LBS. PER ACRE OR
<br />APPROVED EQUAL. WITH HYDRAULIC SOIL STABILIZER TYPE 5 MNDOT 3884.
<br />• PERMANENT TURF RESTORATION IS SEEDING IN ACCORDANCE WITH MNDOT
<br />3876, SEED IS MIXTURE(S) ARE 240 & 310 W/HYDRAULIC SOIL STABILIZER
<br />TYPE 5.
<br />• IMMEDIATELY FOLLOWING SITE GRADING OPERATIONS AND PRIOR TO THE
<br />INSTALLATION OF UTILITIES, THE ENTIRE SITE (EXCEPT ROADWAYS) SHALL
<br />HAVE BEEN SEEDED AND MULCHED AND SILT FENCE SHALL HAVE BEEN
<br />INSTALLED AROUND ALL PONDS.
<br />• ALL TEMPORARY EROSION AND SEDIMENT CONTROL MEASURES SHALL BE
<br />PROPERLY DISPOSED OF WITHIN THIRTY (30) DAYS AFTER FINAL SITE
<br />STABILIZATION IS ACHIEVED OR AFTER THE TEMPORARY MEASURES ARE NO
<br />LONGER NEEDED.
<br />• ALL BMP ITEMS AND QUANTITIES ARE CONTAINED WITHIN THE BID PROPOSAL
<br />CONTAINED IN THE PROJECT MANUAL (SPECIFICATIONS) FOR THIS PROJECT
<br />AND ARE INCORPORATED HERE -IN BY REFERENCE.
<br />RECEIVING WATERS:
<br />EXISTING STORM WATER PONDS,
<br />EXISTING WETLAND -UNNAMED &
<br />CITY STORM SEWER SYSTEM
<br />SOIL TYPES PER NRCS:
<br />SOILS HAVE BEEN MIXED WITH PREVIOUS
<br />GRADING OPERATIONS. SOILS PER NRCS
<br />PRIOR TO PREVIOUS GRADING INCLUDED
<br />THE FOLLOWING:
<br />75 -Bluffton loam
<br />113 -Webster loam
<br />123 -Dundas fine sandy loam
<br />225 -Nessel fine sandy loam
<br />Fred Stelter
<br />14505 43rd Avenue N.
<br />Plymouth MN 55446
<br />612.325.7414
<br />CIVIL ENGINEER /SURVEYOR
<br />Landform Professional Services, LLC
<br />Suite 15
<br />580 Dodge Avenue NW
<br />Elk River, MN 55330
<br />763.441.2072
<br />LEGAL DESCRIPTION:
<br />Lots 3-17, Block I, WATERS EDGE FOURTH
<br />ADDITION, Washington County, MN.
<br />UNIVERSITY OF MINNESOTA
<br />Rc el
<br />.il.
<br />0-1
<br />Design of Constructio PP (May 31 2019)
<br />Call 48 Hours before digging
<br />GOPHER STATE ONE CALL
<br />Twin Cities Area 651-454-0002
<br />MN. Toll Free 1-800-252-1166
<br />EROSION CONTROL, SCHEDULE
<br />1. IMMEDIATELY FOLLOWING GRADING OF SLOPES 3:1 OR GREATER,
<br />SLOPES MUST BE STABILIZED WITH WOOD FIBER BLANKET (OR
<br />OTHER METHOD APPROVED BY THE ENGINEER) OVER APPROVED
<br />SEED MIXTURE AND A MINIMUM OF 4" TOPSOIL
<br />2. ALL EROSION CONTROL INSTALLATIONS SIIALL REMAIN IN PLACE
<br />AND BE MAINTAINED IN GOOD CONDITION BY THE CONTRACTOR
<br />UNTIL THE SITE HAS BEEN RE -VEGETATED, AT WHICH TIME IT
<br />SHALL BE REMOVED. FOR PROPOSED PAVED SURFACE AREAS, THE
<br />CONTRACTOR MAY REMOVE NECESSARY SILT FENCING TO
<br />CONSTRUCT ROADWAYS WHILE MAINTAINING ADEQUATE EROSION
<br />CONTROL IN ADJACENT AREAS.
<br />3. SUFFICIENT TOPSOIL SHALL BE STOCKPILED TO ALLOW FOR THE
<br />REPLACEMENT OF A MINIMUM OF 4" OF TOPSOIL FOR DISTURBED
<br />AREAS TO BE RE -VEGETATED.
<br />4. THE CONTRACTOR SHALL SCHEDULE SITE GRADING, UTILITY
<br />INSTALLATION AND ROADWAY CONSTRUCTION SO THAT THE
<br />GENERAL SITE CAN BE MULCHED AND RE -SEEDED SOON AFTER
<br />DISTURBANCE. ALL DISTURBED AREAS SHALL BE SEEDED AND
<br />MULCHED WITHIN _7 DAYS AFTER COMPLETION OF FINAL GRADING
<br />OR AFTER :7 DAYS OF GRADING INACTIVITY.
<br />EROSION CONTROL MAINTENANCE PROGRAM
<br />1. INSPECT SILT FENCES IMMEDITATELY AFTER EACH RAINFALL AND
<br />AT LEAST DAILY DURING A PROLONGED RAINFALL. IMMEDIATELY
<br />REPAIR FAILED OR FAILING S1LT FENCE.
<br />2. SEDIMENT REMOVAL - SEDIMENT DEPOSITS SHOULD BE REMOVED
<br />AFTER EACH STORM EVENT. THEY MUST BE REMOVED WHEN
<br />DEPOSITS REACH APPROXIMATELY ONE-HALF THE HEIGHT OF THE
<br />BARRIER.
<br />3. REPLACEMENT - FABRIC SHALL BE REPLACED PROMPTLY WHEN IT
<br />DECOMPOSES OR BECOMES INEFFECTIVE BEFORE THE BARRIER IS
<br />NO LONGER NECESSARY.
<br />ANY SEDIMENT REMAINING IN PLACE AFTER THE SILT FENCE OR
<br />FILTER FABRIC IS NO LONGER REQUIRED SHALL BE DRESSED TO
<br />CONFORM WITH THE EXISTING GRADE, PREPARED AND SEEDED
<br />WITH THE APPROPRIATE SEED MIX, AS DIRECTED BY THE
<br />ENGINEER.
<br />4. IN THOSE AREAS WHERE WOODFIBER BLANKET OR OTHER SLOPE
<br />STABILIZATION METHOD HAS FAILED, THE SLOPE SHALL BE RE-ESTABLISHED,
<br />SEED AND TOPSOIL REPLACED, AND ADDITIONAL SLOPE TREATMENT
<br />INSTALLED.
<br />DE VEL OPMEN T SUMMA R Y
<br />TOTAL PARCEL AREA: 571,805 Sq. Ft.
<br />LOTS & STREET AREA: 196,267 Sq. Ft.
<br />TOTAL DISTURBED AREA = 2.9 ACRES
<br />TOTAL AREA FOR TURF RESTORATION = 1.8 ACRES
<br />EXISTING IMPERVIOUS AREA = 1.62 ACRES
<br />NEW IMPERVIOUS AREA = 3.39 ACRES
<br />LOCATION: LAT. 45.1797 ; LONG. - 93.0207
<br />SPECIAL WATERS SEARCH
<br />- CLEARWATER CREEK ASSASSMENT UNIT
<br />07010206-519, 06/08/2018
<br />PERMIT I.D. NUMBER: PENDING
<br />ISSUED
<br />IMPLEMEN TA TION SEQUENCE:
<br />I. INSTALL STABILIZED CONSTRUCTION ENTRANCE
<br />13.13 Ac.
<br />4.5 Ac.
<br />2. INSTALL PERIMETER SEDIMENT CONTROL DEVICES (SILT
<br />FENCE)
<br />3. CONSTRUCT STORMWATER INFILTRATION AREAS
<br />4. STOCKPILE TOPSOIL FOR RE -USE
<br />5. COMPLETE SITE GRADING
<br />6. STABILIZE DENUDED AREAS AND STOCKPILES WITHIN
<br />TIMEFRAME LISTED IN EROSION PREVENTION PRACTICES
<br />7. INSTALL UTILITIES, STORM SEWER, STORM DRAIN INLET
<br />PROTECTION, CURB & GUTTER, & PAVING
<br />8. WHEN ALL CONSTRUCTION ACTIVITY IS COMPLETE AND
<br />THE SITE STABILIZED, REMOVE ACCUMULATED SEDIMENT
<br />FROM INFILTRATION AREAS, REMOVE SEDIMENT CONTROL
<br />BMP'S, AND RESEED ANY AREAS DISTURBED BY THEIR
<br />REMOVAL.
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<br />SECTION 18, TOWNSHIP 31, RANGE 21
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<br />RECEIVING WATERS:
<br />EXISTING STORM WATER PONDS,
<br />EXISTING WETLAND -UNNAMED &
<br />CITY STORM SEWER SYSTEM
<br />SOIL TYPES PER NRCS:
<br />SOILS HAVE BEEN MIXED WITH PREVIOUS
<br />GRADING OPERATIONS. SOILS PER NRCS
<br />PRIOR TO PREVIOUS GRADING INCLUDED
<br />THE FOLLOWING:
<br />75 -Bluffton loam
<br />113 -Webster loam
<br />123 -Dundas fine sandy loam
<br />225 -Nessel fine sandy loam
<br />Fred Stelter
<br />14505 43rd Avenue N.
<br />Plymouth MN 55446
<br />612.325.7414
<br />CIVIL ENGINEER /SURVEYOR
<br />Landform Professional Services, LLC
<br />Suite 15
<br />580 Dodge Avenue NW
<br />Elk River, MN 55330
<br />763.441.2072
<br />LEGAL DESCRIPTION:
<br />Lots 3-17, Block I, WATERS EDGE FOURTH
<br />ADDITION, Washington County, MN.
<br />UNIVERSITY OF MINNESOTA
<br />Rc el
<br />.il.
<br />0-1
<br />Design of Constructio PP (May 31 2019)
<br />Call 48 Hours before digging
<br />GOPHER STATE ONE CALL
<br />Twin Cities Area 651-454-0002
<br />MN. Toll Free 1-800-252-1166
<br />EROSION CONTROL, SCHEDULE
<br />1. IMMEDIATELY FOLLOWING GRADING OF SLOPES 3:1 OR GREATER,
<br />SLOPES MUST BE STABILIZED WITH WOOD FIBER BLANKET (OR
<br />OTHER METHOD APPROVED BY THE ENGINEER) OVER APPROVED
<br />SEED MIXTURE AND A MINIMUM OF 4" TOPSOIL
<br />2. ALL EROSION CONTROL INSTALLATIONS SIIALL REMAIN IN PLACE
<br />AND BE MAINTAINED IN GOOD CONDITION BY THE CONTRACTOR
<br />UNTIL THE SITE HAS BEEN RE -VEGETATED, AT WHICH TIME IT
<br />SHALL BE REMOVED. FOR PROPOSED PAVED SURFACE AREAS, THE
<br />CONTRACTOR MAY REMOVE NECESSARY SILT FENCING TO
<br />CONSTRUCT ROADWAYS WHILE MAINTAINING ADEQUATE EROSION
<br />CONTROL IN ADJACENT AREAS.
<br />3. SUFFICIENT TOPSOIL SHALL BE STOCKPILED TO ALLOW FOR THE
<br />REPLACEMENT OF A MINIMUM OF 4" OF TOPSOIL FOR DISTURBED
<br />AREAS TO BE RE -VEGETATED.
<br />4. THE CONTRACTOR SHALL SCHEDULE SITE GRADING, UTILITY
<br />INSTALLATION AND ROADWAY CONSTRUCTION SO THAT THE
<br />GENERAL SITE CAN BE MULCHED AND RE -SEEDED SOON AFTER
<br />DISTURBANCE. ALL DISTURBED AREAS SHALL BE SEEDED AND
<br />MULCHED WITHIN _7 DAYS AFTER COMPLETION OF FINAL GRADING
<br />OR AFTER :7 DAYS OF GRADING INACTIVITY.
<br />EROSION CONTROL MAINTENANCE PROGRAM
<br />1. INSPECT SILT FENCES IMMEDITATELY AFTER EACH RAINFALL AND
<br />AT LEAST DAILY DURING A PROLONGED RAINFALL. IMMEDIATELY
<br />REPAIR FAILED OR FAILING S1LT FENCE.
<br />2. SEDIMENT REMOVAL - SEDIMENT DEPOSITS SHOULD BE REMOVED
<br />AFTER EACH STORM EVENT. THEY MUST BE REMOVED WHEN
<br />DEPOSITS REACH APPROXIMATELY ONE-HALF THE HEIGHT OF THE
<br />BARRIER.
<br />3. REPLACEMENT - FABRIC SHALL BE REPLACED PROMPTLY WHEN IT
<br />DECOMPOSES OR BECOMES INEFFECTIVE BEFORE THE BARRIER IS
<br />NO LONGER NECESSARY.
<br />ANY SEDIMENT REMAINING IN PLACE AFTER THE SILT FENCE OR
<br />FILTER FABRIC IS NO LONGER REQUIRED SHALL BE DRESSED TO
<br />CONFORM WITH THE EXISTING GRADE, PREPARED AND SEEDED
<br />WITH THE APPROPRIATE SEED MIX, AS DIRECTED BY THE
<br />ENGINEER.
<br />4. IN THOSE AREAS WHERE WOODFIBER BLANKET OR OTHER SLOPE
<br />STABILIZATION METHOD HAS FAILED, THE SLOPE SHALL BE RE-ESTABLISHED,
<br />SEED AND TOPSOIL REPLACED, AND ADDITIONAL SLOPE TREATMENT
<br />INSTALLED.
<br />DE VEL OPMEN T SUMMA R Y
<br />TOTAL PARCEL AREA: 571,805 Sq. Ft.
<br />LOTS & STREET AREA: 196,267 Sq. Ft.
<br />TOTAL DISTURBED AREA = 2.9 ACRES
<br />TOTAL AREA FOR TURF RESTORATION = 1.8 ACRES
<br />EXISTING IMPERVIOUS AREA = 1.62 ACRES
<br />NEW IMPERVIOUS AREA = 3.39 ACRES
<br />LOCATION: LAT. 45.1797 ; LONG. - 93.0207
<br />SPECIAL WATERS SEARCH
<br />- CLEARWATER CREEK ASSASSMENT UNIT
<br />07010206-519, 06/08/2018
<br />PERMIT I.D. NUMBER: PENDING
<br />ISSUED
<br />IMPLEMEN TA TION SEQUENCE:
<br />I. INSTALL STABILIZED CONSTRUCTION ENTRANCE
<br />13.13 Ac.
<br />4.5 Ac.
<br />2. INSTALL PERIMETER SEDIMENT CONTROL DEVICES (SILT
<br />FENCE)
<br />3. CONSTRUCT STORMWATER INFILTRATION AREAS
<br />4. STOCKPILE TOPSOIL FOR RE -USE
<br />5. COMPLETE SITE GRADING
<br />6. STABILIZE DENUDED AREAS AND STOCKPILES WITHIN
<br />TIMEFRAME LISTED IN EROSION PREVENTION PRACTICES
<br />7. INSTALL UTILITIES, STORM SEWER, STORM DRAIN INLET
<br />PROTECTION, CURB & GUTTER, & PAVING
<br />8. WHEN ALL CONSTRUCTION ACTIVITY IS COMPLETE AND
<br />THE SITE STABILIZED, REMOVE ACCUMULATED SEDIMENT
<br />FROM INFILTRATION AREAS, REMOVE SEDIMENT CONTROL
<br />BMP'S, AND RESEED ANY AREAS DISTURBED BY THEIR
<br />REMOVAL.
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